diff options
Diffstat (limited to 'drivers/iio')
128 files changed, 7181 insertions, 1014 deletions
diff --git a/drivers/iio/Kconfig b/drivers/iio/Kconfig index 4011effe4c05..66792e707d74 100644 --- a/drivers/iio/Kconfig +++ b/drivers/iio/Kconfig @@ -19,27 +19,7 @@ config IIO_BUFFER acquisition methods. if IIO_BUFFER - -config IIO_BUFFER_CB - bool "IIO callback buffer used for push in-kernel interfaces" - help - Should be selected by any drivers that do in-kernel push - usage. That is, those where the data is pushed to the consumer. - -config IIO_KFIFO_BUF - tristate "Industrial I/O buffering based on kfifo" - help - A simple fifo based on kfifo. Note that this currently provides - no buffer events so it is up to userspace to work out how - often to read from the buffer. - -config IIO_TRIGGERED_BUFFER - tristate - select IIO_TRIGGER - select IIO_KFIFO_BUF - help - Provides helper functions for setting up triggered buffers. - + source "drivers/iio/buffer/Kconfig" endif # IIO_BUFFER config IIO_TRIGGER @@ -58,9 +38,16 @@ config IIO_CONSUMERS_PER_TRIGGER This value controls the maximum number of consumers that a given trigger may handle. Default is 2. +config IIO_TRIGGERED_EVENT + tristate + select IIO_TRIGGER + help + Provides helper functions for setting up triggered events. + source "drivers/iio/accel/Kconfig" source "drivers/iio/adc/Kconfig" source "drivers/iio/amplifiers/Kconfig" +source "drivers/iio/chemical/Kconfig" source "drivers/iio/common/Kconfig" source "drivers/iio/dac/Kconfig" source "drivers/iio/frequency/Kconfig" @@ -73,6 +60,7 @@ source "drivers/iio/orientation/Kconfig" if IIO_TRIGGER source "drivers/iio/trigger/Kconfig" endif #IIO_TRIGGER +source "drivers/iio/potentiometer/Kconfig" source "drivers/iio/pressure/Kconfig" source "drivers/iio/proximity/Kconfig" source "drivers/iio/temperature/Kconfig" diff --git a/drivers/iio/Makefile b/drivers/iio/Makefile index 698afc2d17ce..aeca7269fe44 100644 --- a/drivers/iio/Makefile +++ b/drivers/iio/Makefile @@ -6,14 +6,14 @@ obj-$(CONFIG_IIO) += industrialio.o industrialio-y := industrialio-core.o industrialio-event.o inkern.o industrialio-$(CONFIG_IIO_BUFFER) += industrialio-buffer.o industrialio-$(CONFIG_IIO_TRIGGER) += industrialio-trigger.o -industrialio-$(CONFIG_IIO_BUFFER_CB) += buffer_cb.o -obj-$(CONFIG_IIO_TRIGGERED_BUFFER) += industrialio-triggered-buffer.o -obj-$(CONFIG_IIO_KFIFO_BUF) += kfifo_buf.o +obj-$(CONFIG_IIO_TRIGGERED_EVENT) += industrialio-triggered-event.o obj-y += accel/ obj-y += adc/ obj-y += amplifiers/ +obj-y += buffer/ +obj-y += chemical/ obj-y += common/ obj-y += dac/ obj-y += gyro/ @@ -23,6 +23,7 @@ obj-y += imu/ obj-y += light/ obj-y += magnetometer/ obj-y += orientation/ +obj-y += potentiometer/ obj-y += pressure/ obj-y += proximity/ obj-y += temperature/ diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig index a59047d7657e..969428dd6329 100644 --- a/drivers/iio/accel/Kconfig +++ b/drivers/iio/accel/Kconfig @@ -19,19 +19,27 @@ config BMA180 config BMC150_ACCEL tristate "Bosch BMC150 Accelerometer Driver" - depends on I2C select IIO_BUFFER select IIO_TRIGGERED_BUFFER + select REGMAP + select BMC150_ACCEL_I2C if I2C + select BMC150_ACCEL_SPI if SPI help Say yes here to build support for the following Bosch accelerometers: BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280. - Currently this only supports the device via an i2c interface. - This is a combo module with both accelerometer and magnetometer. This driver is only implementing accelerometer part, which has its own address and register map. +config BMC150_ACCEL_I2C + tristate + select REGMAP_I2C + +config BMC150_ACCEL_SPI + tristate + select REGMAP_SPI + config HID_SENSOR_ACCEL_3D depends on HID_SENSOR_HUB select IIO_BUFFER @@ -100,13 +108,13 @@ config KXCJK1013 be called kxcjk-1013. config MMA8452 - tristate "Freescale MMA8452Q Accelerometer Driver" + tristate "Freescale MMA8452Q and similar Accelerometers Driver" depends on I2C select IIO_BUFFER select IIO_TRIGGERED_BUFFER help - Say yes here to build support for the Freescale MMA8452Q 3-axis - accelerometer. + Say yes here to build support for the following Freescale 3-axis + accelerometers: MMA8452Q, MMA8453Q, MMA8652FC, MMA8653FC. To compile this driver as a module, choose M here: the module will be called mma8452. @@ -137,6 +145,19 @@ config MMA9553 To compile this driver as a module, choose M here: the module will be called mma9553. +config MXC4005 + tristate "Memsic MXC4005XC 3-Axis Accelerometer Driver" + depends on I2C + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + select REGMAP_I2C + help + Say yes here to build support for the Memsic MXC4005XC 3-axis + accelerometer. + + To compile this driver as a module, choose M. The module will be + called mxc4005. + config STK8312 tristate "Sensortek STK8312 3-Axis Accelerometer Driver" depends on I2C diff --git a/drivers/iio/accel/Makefile b/drivers/iio/accel/Makefile index ebd2675b2a02..7925f166e6e9 100644 --- a/drivers/iio/accel/Makefile +++ b/drivers/iio/accel/Makefile @@ -4,7 +4,9 @@ # When adding new entries keep the list in alphabetical order obj-$(CONFIG_BMA180) += bma180.o -obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel.o +obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel-core.o +obj-$(CONFIG_BMC150_ACCEL_I2C) += bmc150-accel-i2c.o +obj-$(CONFIG_BMC150_ACCEL_SPI) += bmc150-accel-spi.o obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o obj-$(CONFIG_KXCJK1013) += kxcjk-1013.o obj-$(CONFIG_KXSD9) += kxsd9.o @@ -14,6 +16,8 @@ obj-$(CONFIG_MMA9551_CORE) += mma9551_core.o obj-$(CONFIG_MMA9551) += mma9551.o obj-$(CONFIG_MMA9553) += mma9553.o +obj-$(CONFIG_MXC4005) += mxc4005.o + obj-$(CONFIG_STK8312) += stk8312.o obj-$(CONFIG_STK8BA50) += stk8ba50.o diff --git a/drivers/iio/accel/bmc150-accel.c b/drivers/iio/accel/bmc150-accel-core.c index 0104cdef8709..2d33f1e821db 100644 --- a/drivers/iio/accel/bmc150-accel.c +++ b/drivers/iio/accel/bmc150-accel-core.c @@ -35,10 +35,12 @@ #include <linux/iio/trigger.h> #include <linux/iio/trigger_consumer.h> #include <linux/iio/triggered_buffer.h> +#include <linux/regmap.h> + +#include "bmc150-accel.h" #define BMC150_ACCEL_DRV_NAME "bmc150_accel" #define BMC150_ACCEL_IRQ_NAME "bmc150_accel_event" -#define BMC150_ACCEL_GPIO_NAME "bmc150_accel_int" #define BMC150_ACCEL_REG_CHIP_ID 0x00 @@ -185,7 +187,9 @@ enum bmc150_accel_trigger_id { }; struct bmc150_accel_data { - struct i2c_client *client; + struct regmap *regmap; + struct device *dev; + int irq; struct bmc150_accel_interrupt interrupts[BMC150_ACCEL_INTERRUPTS]; atomic_t active_intr; struct bmc150_accel_trigger triggers[BMC150_ACCEL_TRIGGERS]; @@ -242,6 +246,12 @@ static const struct { {500000, BMC150_ACCEL_SLEEP_500_MS}, {1000000, BMC150_ACCEL_SLEEP_1_SEC} }; +static const struct regmap_config bmc150_i2c_regmap_conf = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x3f, +}; + static int bmc150_accel_set_mode(struct bmc150_accel_data *data, enum bmc150_power_modes mode, int dur_us) @@ -269,12 +279,11 @@ static int bmc150_accel_set_mode(struct bmc150_accel_data *data, lpw_bits = mode << BMC150_ACCEL_PMU_MODE_SHIFT; lpw_bits |= (dur_val << BMC150_ACCEL_PMU_BIT_SLEEP_DUR_SHIFT); - dev_dbg(&data->client->dev, "Set Mode bits %x\n", lpw_bits); + dev_dbg(data->dev, "Set Mode bits %x\n", lpw_bits); - ret = i2c_smbus_write_byte_data(data->client, - BMC150_ACCEL_REG_PMU_LPW, lpw_bits); + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_PMU_LPW, lpw_bits); if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_pmu_lpw\n"); + dev_err(data->dev, "Error writing reg_pmu_lpw\n"); return ret; } @@ -290,8 +299,7 @@ static int bmc150_accel_set_bw(struct bmc150_accel_data *data, int val, for (i = 0; i < ARRAY_SIZE(bmc150_accel_samp_freq_table); ++i) { if (bmc150_accel_samp_freq_table[i].val == val && bmc150_accel_samp_freq_table[i].val2 == val2) { - ret = i2c_smbus_write_byte_data( - data->client, + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_PMU_BW, bmc150_accel_samp_freq_table[i].bw_bits); if (ret < 0) @@ -308,30 +316,23 @@ static int bmc150_accel_set_bw(struct bmc150_accel_data *data, int val, static int bmc150_accel_update_slope(struct bmc150_accel_data *data) { - int ret, val; + int ret; - ret = i2c_smbus_write_byte_data(data->client, BMC150_ACCEL_REG_INT_6, + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_6, data->slope_thres); if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_int_6\n"); - return ret; - } - - ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_INT_5); - if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_int_5\n"); + dev_err(data->dev, "Error writing reg_int_6\n"); return ret; } - val = (ret & ~BMC150_ACCEL_SLOPE_DUR_MASK) | data->slope_dur; - ret = i2c_smbus_write_byte_data(data->client, BMC150_ACCEL_REG_INT_5, - val); + ret = regmap_update_bits(data->regmap, BMC150_ACCEL_REG_INT_5, + BMC150_ACCEL_SLOPE_DUR_MASK, data->slope_dur); if (ret < 0) { - dev_err(&data->client->dev, "Error write reg_int_5\n"); + dev_err(data->dev, "Error updating reg_int_5\n"); return ret; } - dev_dbg(&data->client->dev, "%s: %x %x\n", __func__, data->slope_thres, + dev_dbg(data->dev, "%s: %x %x\n", __func__, data->slope_thres, data->slope_dur); return ret; @@ -380,17 +381,17 @@ static int bmc150_accel_set_power_state(struct bmc150_accel_data *data, bool on) int ret; if (on) { - ret = pm_runtime_get_sync(&data->client->dev); + ret = pm_runtime_get_sync(data->dev); } else { - pm_runtime_mark_last_busy(&data->client->dev); - ret = pm_runtime_put_autosuspend(&data->client->dev); + pm_runtime_mark_last_busy(data->dev); + ret = pm_runtime_put_autosuspend(data->dev); } if (ret < 0) { - dev_err(&data->client->dev, + dev_err(data->dev, "Failed: bmc150_accel_set_power_state for %d\n", on); if (on) - pm_runtime_put_noidle(&data->client->dev); + pm_runtime_put_noidle(data->dev); return ret; } @@ -470,38 +471,18 @@ static int bmc150_accel_set_interrupt(struct bmc150_accel_data *data, int i, return ret; /* map the interrupt to the appropriate pins */ - ret = i2c_smbus_read_byte_data(data->client, info->map_reg); - if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_int_map\n"); - goto out_fix_power_state; - } - if (state) - ret |= info->map_bitmask; - else - ret &= ~info->map_bitmask; - - ret = i2c_smbus_write_byte_data(data->client, info->map_reg, - ret); + ret = regmap_update_bits(data->regmap, info->map_reg, info->map_bitmask, + (state ? info->map_bitmask : 0)); if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_int_map\n"); + dev_err(data->dev, "Error updating reg_int_map\n"); goto out_fix_power_state; } /* enable/disable the interrupt */ - ret = i2c_smbus_read_byte_data(data->client, info->en_reg); - if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_int_en\n"); - goto out_fix_power_state; - } - - if (state) - ret |= info->en_bitmask; - else - ret &= ~info->en_bitmask; - - ret = i2c_smbus_write_byte_data(data->client, info->en_reg, ret); + ret = regmap_update_bits(data->regmap, info->en_reg, info->en_bitmask, + (state ? info->en_bitmask : 0)); if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_int_en\n"); + dev_err(data->dev, "Error updating reg_int_en\n"); goto out_fix_power_state; } @@ -523,12 +504,11 @@ static int bmc150_accel_set_scale(struct bmc150_accel_data *data, int val) for (i = 0; i < ARRAY_SIZE(data->chip_info->scale_table); ++i) { if (data->chip_info->scale_table[i].scale == val) { - ret = i2c_smbus_write_byte_data( - data->client, + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_PMU_RANGE, data->chip_info->scale_table[i].reg_range); if (ret < 0) { - dev_err(&data->client->dev, + dev_err(data->dev, "Error writing pmu_range\n"); return ret; } @@ -544,16 +524,17 @@ static int bmc150_accel_set_scale(struct bmc150_accel_data *data, int val) static int bmc150_accel_get_temp(struct bmc150_accel_data *data, int *val) { int ret; + unsigned int value; mutex_lock(&data->mutex); - ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_TEMP); + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_TEMP, &value); if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_temp\n"); + dev_err(data->dev, "Error reading reg_temp\n"); mutex_unlock(&data->mutex); return ret; } - *val = sign_extend32(ret, 7); + *val = sign_extend32(value, 7); mutex_unlock(&data->mutex); @@ -566,6 +547,7 @@ static int bmc150_accel_get_axis(struct bmc150_accel_data *data, { int ret; int axis = chan->scan_index; + unsigned int raw_val; mutex_lock(&data->mutex); ret = bmc150_accel_set_power_state(data, true); @@ -574,15 +556,15 @@ static int bmc150_accel_get_axis(struct bmc150_accel_data *data, return ret; } - ret = i2c_smbus_read_word_data(data->client, - BMC150_ACCEL_AXIS_TO_REG(axis)); + ret = regmap_bulk_read(data->regmap, BMC150_ACCEL_AXIS_TO_REG(axis), + &raw_val, 2); if (ret < 0) { - dev_err(&data->client->dev, "Error reading axis %d\n", axis); + dev_err(data->dev, "Error reading axis %d\n", axis); bmc150_accel_set_power_state(data, false); mutex_unlock(&data->mutex); return ret; } - *val = sign_extend32(ret >> chan->scan_type.shift, + *val = sign_extend32(raw_val >> chan->scan_type.shift, chan->scan_type.realbits - 1); ret = bmc150_accel_set_power_state(data, false); mutex_unlock(&data->mutex); @@ -846,52 +828,34 @@ static int bmc150_accel_set_watermark(struct iio_dev *indio_dev, unsigned val) * We must read at least one full frame in one burst, otherwise the rest of the * frame data is discarded. */ -static int bmc150_accel_fifo_transfer(const struct i2c_client *client, +static int bmc150_accel_fifo_transfer(struct bmc150_accel_data *data, char *buffer, int samples) { int sample_length = 3 * 2; - u8 reg_fifo_data = BMC150_ACCEL_REG_FIFO_DATA; - int ret = -EIO; - - if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { - struct i2c_msg msg[2] = { - { - .addr = client->addr, - .flags = 0, - .buf = ®_fifo_data, - .len = sizeof(reg_fifo_data), - }, - { - .addr = client->addr, - .flags = I2C_M_RD, - .buf = (u8 *)buffer, - .len = samples * sample_length, - } - }; + int ret; + int total_length = samples * sample_length; + int i; + size_t step = regmap_get_raw_read_max(data->regmap); - ret = i2c_transfer(client->adapter, msg, 2); - if (ret != 2) - ret = -EIO; - else - ret = 0; - } else { - int i, step = I2C_SMBUS_BLOCK_MAX / sample_length; - - for (i = 0; i < samples * sample_length; i += step) { - ret = i2c_smbus_read_i2c_block_data(client, - reg_fifo_data, step, - &buffer[i]); - if (ret != step) { - ret = -EIO; - break; - } + if (!step || step > total_length) + step = total_length; + else if (step < total_length) + step = sample_length; - ret = 0; - } + /* + * Seems we have a bus with size limitation so we have to execute + * multiple reads + */ + for (i = 0; i < total_length; i += step) { + ret = regmap_raw_read(data->regmap, BMC150_ACCEL_REG_FIFO_DATA, + &buffer[i], step); + if (ret) + break; } if (ret) - dev_err(&client->dev, "Error transferring data from fifo\n"); + dev_err(data->dev, "Error transferring data from fifo in single steps of %zu\n", + step); return ret; } @@ -905,15 +869,15 @@ static int __bmc150_accel_fifo_flush(struct iio_dev *indio_dev, u16 buffer[BMC150_ACCEL_FIFO_LENGTH * 3]; int64_t tstamp; uint64_t sample_period; + unsigned int val; - ret = i2c_smbus_read_byte_data(data->client, - BMC150_ACCEL_REG_FIFO_STATUS); + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_FIFO_STATUS, &val); if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_fifo_status\n"); + dev_err(data->dev, "Error reading reg_fifo_status\n"); return ret; } - count = ret & 0x7F; + count = val & 0x7F; if (!count) return 0; @@ -952,7 +916,7 @@ static int __bmc150_accel_fifo_flush(struct iio_dev *indio_dev, if (samples && count > samples) count = samples; - ret = bmc150_accel_fifo_transfer(data->client, (u8 *)buffer, count); + ret = bmc150_accel_fifo_transfer(data, (u8 *)buffer, count); if (ret) return ret; @@ -1052,15 +1016,6 @@ static const struct iio_chan_spec bmc150_accel_channels[] = static const struct iio_chan_spec bma280_accel_channels[] = BMC150_ACCEL_CHANNELS(14); -enum { - bmc150, - bmi055, - bma255, - bma250e, - bma222e, - bma280, -}; - static const struct bmc150_accel_chip_info bmc150_accel_chip_info_tbl[] = { [bmc150] = { .name = "BMC150A", @@ -1155,17 +1110,19 @@ static irqreturn_t bmc150_accel_trigger_handler(int irq, void *p) struct iio_dev *indio_dev = pf->indio_dev; struct bmc150_accel_data *data = iio_priv(indio_dev); int bit, ret, i = 0; + unsigned int raw_val; mutex_lock(&data->mutex); for_each_set_bit(bit, indio_dev->active_scan_mask, indio_dev->masklength) { - ret = i2c_smbus_read_word_data(data->client, - BMC150_ACCEL_AXIS_TO_REG(bit)); + ret = regmap_bulk_read(data->regmap, + BMC150_ACCEL_AXIS_TO_REG(bit), &raw_val, + 2); if (ret < 0) { mutex_unlock(&data->mutex); goto err_read; } - data->buffer[i++] = ret; + data->buffer[i++] = raw_val; } mutex_unlock(&data->mutex); @@ -1189,13 +1146,12 @@ static int bmc150_accel_trig_try_reen(struct iio_trigger *trig) mutex_lock(&data->mutex); /* clear any latched interrupt */ - ret = i2c_smbus_write_byte_data(data->client, - BMC150_ACCEL_REG_INT_RST_LATCH, - BMC150_ACCEL_INT_MODE_LATCH_INT | - BMC150_ACCEL_INT_MODE_LATCH_RESET); + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_RST_LATCH, + BMC150_ACCEL_INT_MODE_LATCH_INT | + BMC150_ACCEL_INT_MODE_LATCH_RESET); mutex_unlock(&data->mutex); if (ret < 0) { - dev_err(&data->client->dev, + dev_err(data->dev, "Error writing reg_int_rst_latch\n"); return ret; } @@ -1249,20 +1205,20 @@ static int bmc150_accel_handle_roc_event(struct iio_dev *indio_dev) struct bmc150_accel_data *data = iio_priv(indio_dev); int dir; int ret; + unsigned int val; - ret = i2c_smbus_read_byte_data(data->client, - BMC150_ACCEL_REG_INT_STATUS_2); + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_INT_STATUS_2, &val); if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_int_status_2\n"); + dev_err(data->dev, "Error reading reg_int_status_2\n"); return ret; } - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_SIGN) + if (val & BMC150_ACCEL_ANY_MOTION_BIT_SIGN) dir = IIO_EV_DIR_FALLING; else dir = IIO_EV_DIR_RISING; - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_X) + if (val & BMC150_ACCEL_ANY_MOTION_BIT_X) iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, @@ -1271,7 +1227,7 @@ static int bmc150_accel_handle_roc_event(struct iio_dev *indio_dev) dir), data->timestamp); - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_Y) + if (val & BMC150_ACCEL_ANY_MOTION_BIT_Y) iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, @@ -1280,7 +1236,7 @@ static int bmc150_accel_handle_roc_event(struct iio_dev *indio_dev) dir), data->timestamp); - if (ret & BMC150_ACCEL_ANY_MOTION_BIT_Z) + if (val & BMC150_ACCEL_ANY_MOTION_BIT_Z) iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, @@ -1315,13 +1271,11 @@ static irqreturn_t bmc150_accel_irq_thread_handler(int irq, void *private) } if (ack) { - ret = i2c_smbus_write_byte_data(data->client, - BMC150_ACCEL_REG_INT_RST_LATCH, - BMC150_ACCEL_INT_MODE_LATCH_INT | - BMC150_ACCEL_INT_MODE_LATCH_RESET); + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_RST_LATCH, + BMC150_ACCEL_INT_MODE_LATCH_INT | + BMC150_ACCEL_INT_MODE_LATCH_RESET); if (ret) - dev_err(&data->client->dev, - "Error writing reg_int_rst_latch\n"); + dev_err(data->dev, "Error writing reg_int_rst_latch\n"); ret = IRQ_HANDLED; } else { @@ -1360,32 +1314,6 @@ static irqreturn_t bmc150_accel_irq_handler(int irq, void *private) return IRQ_NONE; } -static int bmc150_accel_gpio_probe(struct i2c_client *client, - struct bmc150_accel_data *data) -{ - struct device *dev; - struct gpio_desc *gpio; - int ret; - - if (!client) - return -EINVAL; - - dev = &client->dev; - - /* data ready gpio interrupt pin */ - gpio = devm_gpiod_get_index(dev, BMC150_ACCEL_GPIO_NAME, 0, GPIOD_IN); - if (IS_ERR(gpio)) { - dev_err(dev, "Failed: gpio get index\n"); - return PTR_ERR(gpio); - } - - ret = gpiod_to_irq(gpio); - - dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret); - - return ret; -} - static const struct { int intr; const char *name; @@ -1423,7 +1351,7 @@ static int bmc150_accel_triggers_setup(struct iio_dev *indio_dev, for (i = 0; i < BMC150_ACCEL_TRIGGERS; i++) { struct bmc150_accel_trigger *t = &data->triggers[i]; - t->indio_trig = devm_iio_trigger_alloc(&data->client->dev, + t->indio_trig = devm_iio_trigger_alloc(data->dev, bmc150_accel_triggers[i].name, indio_dev->name, indio_dev->id); @@ -1432,7 +1360,7 @@ static int bmc150_accel_triggers_setup(struct iio_dev *indio_dev, break; } - t->indio_trig->dev.parent = &data->client->dev; + t->indio_trig->dev.parent = data->dev; t->indio_trig->ops = &bmc150_accel_trigger_ops; t->intr = bmc150_accel_triggers[i].intr; t->data = data; @@ -1459,20 +1387,19 @@ static int bmc150_accel_fifo_set_mode(struct bmc150_accel_data *data) u8 reg = BMC150_ACCEL_REG_FIFO_CONFIG1; int ret; - ret = i2c_smbus_write_byte_data(data->client, reg, data->fifo_mode); + ret = regmap_write(data->regmap, reg, data->fifo_mode); if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_fifo_config1\n"); + dev_err(data->dev, "Error writing reg_fifo_config1\n"); return ret; } if (!data->fifo_mode) return 0; - ret = i2c_smbus_write_byte_data(data->client, - BMC150_ACCEL_REG_FIFO_CONFIG0, - data->watermark); + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_FIFO_CONFIG0, + data->watermark); if (ret < 0) - dev_err(&data->client->dev, "Error writing reg_fifo_config0\n"); + dev_err(data->dev, "Error writing reg_fifo_config0\n"); return ret; } @@ -1557,23 +1484,25 @@ static const struct iio_buffer_setup_ops bmc150_accel_buffer_ops = { static int bmc150_accel_chip_init(struct bmc150_accel_data *data) { int ret, i; + unsigned int val; - ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_CHIP_ID); + ret = regmap_read(data->regmap, BMC150_ACCEL_REG_CHIP_ID, &val); if (ret < 0) { - dev_err(&data->client->dev, "Error: Reading chip id\n"); + dev_err(data->dev, + "Error: Reading chip id\n"); return ret; } - dev_dbg(&data->client->dev, "Chip Id %x\n", ret); + dev_dbg(data->dev, "Chip Id %x\n", val); for (i = 0; i < ARRAY_SIZE(bmc150_accel_chip_info_tbl); i++) { - if (bmc150_accel_chip_info_tbl[i].chip_id == ret) { + if (bmc150_accel_chip_info_tbl[i].chip_id == val) { data->chip_info = &bmc150_accel_chip_info_tbl[i]; break; } } if (!data->chip_info) { - dev_err(&data->client->dev, "Unsupported chip %x\n", ret); + dev_err(data->dev, "Invalid chip %x\n", val); return -ENODEV; } @@ -1587,11 +1516,11 @@ static int bmc150_accel_chip_init(struct bmc150_accel_data *data) return ret; /* Set Default Range */ - ret = i2c_smbus_write_byte_data(data->client, - BMC150_ACCEL_REG_PMU_RANGE, - BMC150_ACCEL_DEF_RANGE_4G); + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_PMU_RANGE, + BMC150_ACCEL_DEF_RANGE_4G); if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_pmu_range\n"); + dev_err(data->dev, + "Error writing reg_pmu_range\n"); return ret; } @@ -1605,12 +1534,11 @@ static int bmc150_accel_chip_init(struct bmc150_accel_data *data) return ret; /* Set default as latched interrupts */ - ret = i2c_smbus_write_byte_data(data->client, - BMC150_ACCEL_REG_INT_RST_LATCH, - BMC150_ACCEL_INT_MODE_LATCH_INT | - BMC150_ACCEL_INT_MODE_LATCH_RESET); + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_RST_LATCH, + BMC150_ACCEL_INT_MODE_LATCH_INT | + BMC150_ACCEL_INT_MODE_LATCH_RESET); if (ret < 0) { - dev_err(&data->client->dev, + dev_err(data->dev, "Error writing reg_int_rst_latch\n"); return ret; } @@ -1618,24 +1546,23 @@ static int bmc150_accel_chip_init(struct bmc150_accel_data *data) return 0; } -static int bmc150_accel_probe(struct i2c_client *client, - const struct i2c_device_id *id) +int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq, + const char *name, bool block_supported) { struct bmc150_accel_data *data; struct iio_dev *indio_dev; int ret; - const char *name = NULL; - indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + indio_dev = devm_iio_device_alloc(dev, sizeof(*data)); if (!indio_dev) return -ENOMEM; data = iio_priv(indio_dev); - i2c_set_clientdata(client, indio_dev); - data->client = client; + dev_set_drvdata(dev, indio_dev); + data->dev = dev; + data->irq = irq; - if (id) - name = id->name; + data->regmap = regmap; ret = bmc150_accel_chip_init(data); if (ret < 0) @@ -1643,7 +1570,7 @@ static int bmc150_accel_probe(struct i2c_client *client, mutex_init(&data->mutex); - indio_dev->dev.parent = &client->dev; + indio_dev->dev.parent = dev; indio_dev->channels = data->chip_info->channels; indio_dev->num_channels = data->chip_info->num_channels; indio_dev->name = name ? name : data->chip_info->name; @@ -1655,16 +1582,13 @@ static int bmc150_accel_probe(struct i2c_client *client, bmc150_accel_trigger_handler, &bmc150_accel_buffer_ops); if (ret < 0) { - dev_err(&client->dev, "Failed: iio triggered buffer setup\n"); + dev_err(data->dev, "Failed: iio triggered buffer setup\n"); return ret; } - if (client->irq < 0) - client->irq = bmc150_accel_gpio_probe(client, data); - - if (client->irq > 0) { + if (data->irq > 0) { ret = devm_request_threaded_irq( - &client->dev, client->irq, + data->dev, data->irq, bmc150_accel_irq_handler, bmc150_accel_irq_thread_handler, IRQF_TRIGGER_RISING, @@ -1679,11 +1603,10 @@ static int bmc150_accel_probe(struct i2c_client *client, * want to use latch mode when we can to prevent interrupt * flooding. */ - ret = i2c_smbus_write_byte_data(data->client, - BMC150_ACCEL_REG_INT_RST_LATCH, - BMC150_ACCEL_INT_MODE_LATCH_RESET); + ret = regmap_write(data->regmap, BMC150_ACCEL_REG_INT_RST_LATCH, + BMC150_ACCEL_INT_MODE_LATCH_RESET); if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_int_rst_latch\n"); + dev_err(data->dev, "Error writing reg_int_rst_latch\n"); goto err_buffer_cleanup; } @@ -1693,9 +1616,7 @@ static int bmc150_accel_probe(struct i2c_client *client, if (ret) goto err_buffer_cleanup; - if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) || - i2c_check_functionality(client->adapter, - I2C_FUNC_SMBUS_READ_I2C_BLOCK)) { + if (block_supported) { indio_dev->modes |= INDIO_BUFFER_SOFTWARE; indio_dev->info = &bmc150_accel_info_fifo; indio_dev->buffer->attrs = bmc150_accel_fifo_attributes; @@ -1704,18 +1625,17 @@ static int bmc150_accel_probe(struct i2c_client *client, ret = iio_device_register(indio_dev); if (ret < 0) { - dev_err(&client->dev, "Unable to register iio device\n"); + dev_err(dev, "Unable to register iio device\n"); goto err_trigger_unregister; } - ret = pm_runtime_set_active(&client->dev); + ret = pm_runtime_set_active(dev); if (ret) goto err_iio_unregister; - pm_runtime_enable(&client->dev); - pm_runtime_set_autosuspend_delay(&client->dev, - BMC150_AUTO_SUSPEND_DELAY_MS); - pm_runtime_use_autosuspend(&client->dev); + pm_runtime_enable(dev); + pm_runtime_set_autosuspend_delay(dev, BMC150_AUTO_SUSPEND_DELAY_MS); + pm_runtime_use_autosuspend(dev); return 0; @@ -1728,15 +1648,16 @@ err_buffer_cleanup: return ret; } +EXPORT_SYMBOL_GPL(bmc150_accel_core_probe); -static int bmc150_accel_remove(struct i2c_client *client) +int bmc150_accel_core_remove(struct device *dev) { - struct iio_dev *indio_dev = i2c_get_clientdata(client); + struct iio_dev *indio_dev = dev_get_drvdata(dev); struct bmc150_accel_data *data = iio_priv(indio_dev); - pm_runtime_disable(&client->dev); - pm_runtime_set_suspended(&client->dev); - pm_runtime_put_noidle(&client->dev); + pm_runtime_disable(data->dev); + pm_runtime_set_suspended(data->dev); + pm_runtime_put_noidle(data->dev); iio_device_unregister(indio_dev); @@ -1750,11 +1671,12 @@ static int bmc150_accel_remove(struct i2c_client *client) return 0; } +EXPORT_SYMBOL_GPL(bmc150_accel_core_remove); #ifdef CONFIG_PM_SLEEP static int bmc150_accel_suspend(struct device *dev) { - struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); + struct iio_dev *indio_dev = dev_get_drvdata(dev); struct bmc150_accel_data *data = iio_priv(indio_dev); mutex_lock(&data->mutex); @@ -1766,7 +1688,7 @@ static int bmc150_accel_suspend(struct device *dev) static int bmc150_accel_resume(struct device *dev) { - struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); + struct iio_dev *indio_dev = dev_get_drvdata(dev); struct bmc150_accel_data *data = iio_priv(indio_dev); mutex_lock(&data->mutex); @@ -1782,11 +1704,11 @@ static int bmc150_accel_resume(struct device *dev) #ifdef CONFIG_PM static int bmc150_accel_runtime_suspend(struct device *dev) { - struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); + struct iio_dev *indio_dev = dev_get_drvdata(dev); struct bmc150_accel_data *data = iio_priv(indio_dev); int ret; - dev_dbg(&data->client->dev, __func__); + dev_dbg(data->dev, __func__); ret = bmc150_accel_set_mode(data, BMC150_ACCEL_SLEEP_MODE_SUSPEND, 0); if (ret < 0) return -EAGAIN; @@ -1796,12 +1718,12 @@ static int bmc150_accel_runtime_suspend(struct device *dev) static int bmc150_accel_runtime_resume(struct device *dev) { - struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); + struct iio_dev *indio_dev = dev_get_drvdata(dev); struct bmc150_accel_data *data = iio_priv(indio_dev); int ret; int sleep_val; - dev_dbg(&data->client->dev, __func__); + dev_dbg(data->dev, __func__); ret = bmc150_accel_set_mode(data, BMC150_ACCEL_SLEEP_MODE_NORMAL, 0); if (ret < 0) @@ -1820,47 +1742,12 @@ static int bmc150_accel_runtime_resume(struct device *dev) } #endif -static const struct dev_pm_ops bmc150_accel_pm_ops = { +const struct dev_pm_ops bmc150_accel_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(bmc150_accel_suspend, bmc150_accel_resume) SET_RUNTIME_PM_OPS(bmc150_accel_runtime_suspend, bmc150_accel_runtime_resume, NULL) }; - -static const struct acpi_device_id bmc150_accel_acpi_match[] = { - {"BSBA0150", bmc150}, - {"BMC150A", bmc150}, - {"BMI055A", bmi055}, - {"BMA0255", bma255}, - {"BMA250E", bma250e}, - {"BMA222E", bma222e}, - {"BMA0280", bma280}, - { }, -}; -MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match); - -static const struct i2c_device_id bmc150_accel_id[] = { - {"bmc150_accel", bmc150}, - {"bmi055_accel", bmi055}, - {"bma255", bma255}, - {"bma250e", bma250e}, - {"bma222e", bma222e}, - {"bma280", bma280}, - {} -}; - -MODULE_DEVICE_TABLE(i2c, bmc150_accel_id); - -static struct i2c_driver bmc150_accel_driver = { - .driver = { - .name = BMC150_ACCEL_DRV_NAME, - .acpi_match_table = ACPI_PTR(bmc150_accel_acpi_match), - .pm = &bmc150_accel_pm_ops, - }, - .probe = bmc150_accel_probe, - .remove = bmc150_accel_remove, - .id_table = bmc150_accel_id, -}; -module_i2c_driver(bmc150_accel_driver); +EXPORT_SYMBOL_GPL(bmc150_accel_pm_ops); MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/accel/bmc150-accel-i2c.c b/drivers/iio/accel/bmc150-accel-i2c.c new file mode 100644 index 000000000000..b41404ba32fc --- /dev/null +++ b/drivers/iio/accel/bmc150-accel-i2c.c @@ -0,0 +1,102 @@ +/* + * 3-axis accelerometer driver supporting following I2C Bosch-Sensortec chips: + * - BMC150 + * - BMI055 + * - BMA255 + * - BMA250E + * - BMA222E + * - BMA280 + * + * Copyright (c) 2014, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ + +#include <linux/device.h> +#include <linux/mod_devicetable.h> +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/acpi.h> +#include <linux/regmap.h> + +#include "bmc150-accel.h" + +static const struct regmap_config bmc150_i2c_regmap_conf = { + .reg_bits = 8, + .val_bits = 8, +}; + +static int bmc150_accel_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct regmap *regmap; + const char *name = NULL; + bool block_supported = + i2c_check_functionality(client->adapter, I2C_FUNC_I2C) || + i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_READ_I2C_BLOCK); + + regmap = devm_regmap_init_i2c(client, &bmc150_i2c_regmap_conf); + if (IS_ERR(regmap)) { + dev_err(&client->dev, "Failed to initialize i2c regmap\n"); + return PTR_ERR(regmap); + } + + if (id) + name = id->name; + + return bmc150_accel_core_probe(&client->dev, regmap, client->irq, name, + block_supported); +} + +static int bmc150_accel_remove(struct i2c_client *client) +{ + return bmc150_accel_core_remove(&client->dev); +} + +static const struct acpi_device_id bmc150_accel_acpi_match[] = { + {"BSBA0150", bmc150}, + {"BMC150A", bmc150}, + {"BMI055A", bmi055}, + {"BMA0255", bma255}, + {"BMA250E", bma250e}, + {"BMA222E", bma222e}, + {"BMA0280", bma280}, + { }, +}; +MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match); + +static const struct i2c_device_id bmc150_accel_id[] = { + {"bmc150_accel", bmc150}, + {"bmi055_accel", bmi055}, + {"bma255", bma255}, + {"bma250e", bma250e}, + {"bma222e", bma222e}, + {"bma280", bma280}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, bmc150_accel_id); + +static struct i2c_driver bmc150_accel_driver = { + .driver = { + .name = "bmc150_accel_i2c", + .acpi_match_table = ACPI_PTR(bmc150_accel_acpi_match), + .pm = &bmc150_accel_pm_ops, + }, + .probe = bmc150_accel_probe, + .remove = bmc150_accel_remove, + .id_table = bmc150_accel_id, +}; +module_i2c_driver(bmc150_accel_driver); + +MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("BMC150 I2C accelerometer driver"); diff --git a/drivers/iio/accel/bmc150-accel-spi.c b/drivers/iio/accel/bmc150-accel-spi.c new file mode 100644 index 000000000000..16b66f2a7204 --- /dev/null +++ b/drivers/iio/accel/bmc150-accel-spi.c @@ -0,0 +1,91 @@ +/* + * 3-axis accelerometer driver supporting SPI Bosch-Sensortec accelerometer chip + * Copyright © 2015 Pengutronix, Markus Pargmann <mpa@pengutronix.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/device.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/acpi.h> +#include <linux/regmap.h> +#include <linux/spi/spi.h> + +#include "bmc150-accel.h" + +static const struct regmap_config bmc150_spi_regmap_conf = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x3f, +}; + +static int bmc150_accel_probe(struct spi_device *spi) +{ + struct regmap *regmap; + const struct spi_device_id *id = spi_get_device_id(spi); + + regmap = devm_regmap_init_spi(spi, &bmc150_spi_regmap_conf); + if (IS_ERR(regmap)) { + dev_err(&spi->dev, "Failed to initialize spi regmap\n"); + return PTR_ERR(regmap); + } + + return bmc150_accel_core_probe(&spi->dev, regmap, spi->irq, id->name, + true); +} + +static int bmc150_accel_remove(struct spi_device *spi) +{ + return bmc150_accel_core_remove(&spi->dev); +} + +static const struct acpi_device_id bmc150_accel_acpi_match[] = { + {"BSBA0150", bmc150}, + {"BMC150A", bmc150}, + {"BMI055A", bmi055}, + {"BMA0255", bma255}, + {"BMA250E", bma250e}, + {"BMA222E", bma222e}, + {"BMA0280", bma280}, + { }, +}; +MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match); + +static const struct spi_device_id bmc150_accel_id[] = { + {"bmc150_accel", bmc150}, + {"bmi055_accel", bmi055}, + {"bma255", bma255}, + {"bma250e", bma250e}, + {"bma222e", bma222e}, + {"bma280", bma280}, + {} +}; +MODULE_DEVICE_TABLE(spi, bmc150_accel_id); + +static struct spi_driver bmc150_accel_driver = { + .driver = { + .name = "bmc150_accel_spi", + .acpi_match_table = ACPI_PTR(bmc150_accel_acpi_match), + .pm = &bmc150_accel_pm_ops, + }, + .probe = bmc150_accel_probe, + .remove = bmc150_accel_remove, + .id_table = bmc150_accel_id, +}; +module_spi_driver(bmc150_accel_driver); + +MODULE_AUTHOR("Markus Pargmann <mpa@pengutronix.de>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("BMC150 SPI accelerometer driver"); diff --git a/drivers/iio/accel/bmc150-accel.h b/drivers/iio/accel/bmc150-accel.h new file mode 100644 index 000000000000..ba0335987f94 --- /dev/null +++ b/drivers/iio/accel/bmc150-accel.h @@ -0,0 +1,20 @@ +#ifndef _BMC150_ACCEL_H_ +#define _BMC150_ACCEL_H_ + +struct regmap; + +enum { + bmc150, + bmi055, + bma255, + bma250e, + bma222e, + bma280, +}; + +int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq, + const char *name, bool block_supported); +int bmc150_accel_core_remove(struct device *dev); +extern const struct dev_pm_ops bmc150_accel_pm_ops; + +#endif /* _BMC150_ACCEL_H_ */ diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c index 3292bc0c1d0e..18c1b06684c1 100644 --- a/drivers/iio/accel/kxcjk-1013.c +++ b/drivers/iio/accel/kxcjk-1013.c @@ -1162,35 +1162,6 @@ static const char *kxcjk1013_match_acpi_device(struct device *dev, return dev_name(dev); } -static int kxcjk1013_gpio_probe(struct i2c_client *client, - struct kxcjk1013_data *data) -{ - struct device *dev; - struct gpio_desc *gpio; - int ret; - - if (!client) - return -EINVAL; - - if (data->is_smo8500_device) - return -ENOTSUPP; - - dev = &client->dev; - - /* data ready gpio interrupt pin */ - gpio = devm_gpiod_get_index(dev, "kxcjk1013_int", 0, GPIOD_IN); - if (IS_ERR(gpio)) { - dev_err(dev, "acpi gpio get index failed\n"); - return PTR_ERR(gpio); - } - - ret = gpiod_to_irq(gpio); - - dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret); - - return ret; -} - static int kxcjk1013_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -1237,10 +1208,7 @@ static int kxcjk1013_probe(struct i2c_client *client, indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &kxcjk1013_info; - if (client->irq < 0) - client->irq = kxcjk1013_gpio_probe(client, data); - - if (client->irq > 0) { + if (client->irq > 0 && !data->is_smo8500_device) { ret = devm_request_threaded_irq(&client->dev, client->irq, kxcjk1013_data_rdy_trig_poll, kxcjk1013_event_handler, diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c index 98ba761cbb9c..923f56598d4b 100644 --- a/drivers/iio/accel/kxsd9.c +++ b/drivers/iio/accel/kxsd9.c @@ -263,7 +263,6 @@ MODULE_DEVICE_TABLE(spi, kxsd9_id); static struct spi_driver kxsd9_driver = { .driver = { .name = "kxsd9", - .owner = THIS_MODULE, }, .probe = kxsd9_probe, .remove = kxsd9_remove, diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c index b921d84c1be6..1eccc2dcf14c 100644 --- a/drivers/iio/accel/mma8452.c +++ b/drivers/iio/accel/mma8452.c @@ -1,6 +1,12 @@ /* - * mma8452.c - Support for Freescale MMA8452Q 3-axis 12-bit accelerometer + * mma8452.c - Support for following Freescale 3-axis accelerometers: * + * MMA8452Q (12 bit) + * MMA8453Q (10 bit) + * MMA8652FC (12 bit) + * MMA8653FC (10 bit) + * + * Copyright 2015 Martin Kepplinger <martin.kepplinger@theobroma-systems.com> * Copyright 2014 Peter Meerwald <pmeerw@pmeerw.net> * * This file is subject to the terms and conditions of version 2 of @@ -22,10 +28,11 @@ #include <linux/iio/triggered_buffer.h> #include <linux/iio/events.h> #include <linux/delay.h> +#include <linux/of_device.h> #define MMA8452_STATUS 0x00 #define MMA8452_STATUS_DRDY (BIT(2) | BIT(1) | BIT(0)) -#define MMA8452_OUT_X 0x01 /* MSB first, 12-bit */ +#define MMA8452_OUT_X 0x01 /* MSB first */ #define MMA8452_OUT_Y 0x03 #define MMA8452_OUT_Z 0x05 #define MMA8452_INT_SRC 0x0c @@ -38,6 +45,16 @@ #define MMA8452_DATA_CFG_HPF_MASK BIT(4) #define MMA8452_HP_FILTER_CUTOFF 0x0f #define MMA8452_HP_FILTER_CUTOFF_SEL_MASK GENMASK(1, 0) +#define MMA8452_FF_MT_CFG 0x15 +#define MMA8452_FF_MT_CFG_OAE BIT(6) +#define MMA8452_FF_MT_CFG_ELE BIT(7) +#define MMA8452_FF_MT_SRC 0x16 +#define MMA8452_FF_MT_SRC_XHE BIT(1) +#define MMA8452_FF_MT_SRC_YHE BIT(3) +#define MMA8452_FF_MT_SRC_ZHE BIT(5) +#define MMA8452_FF_MT_THS 0x17 +#define MMA8452_FF_MT_THS_MASK 0x7f +#define MMA8452_FF_MT_COUNT 0x18 #define MMA8452_TRANSIENT_CFG 0x1d #define MMA8452_TRANSIENT_CFG_HPF_BYP BIT(0) #define MMA8452_TRANSIENT_CFG_CHAN(chan) BIT(chan + 1) @@ -65,15 +82,65 @@ #define MMA8452_MAX_REG 0x31 #define MMA8452_INT_DRDY BIT(0) +#define MMA8452_INT_FF_MT BIT(2) #define MMA8452_INT_TRANS BIT(5) #define MMA8452_DEVICE_ID 0x2a +#define MMA8453_DEVICE_ID 0x3a +#define MMA8652_DEVICE_ID 0x4a +#define MMA8653_DEVICE_ID 0x5a struct mma8452_data { struct i2c_client *client; struct mutex lock; u8 ctrl_reg1; u8 data_cfg; + const struct mma_chip_info *chip_info; +}; + +/** + * struct mma_chip_info - chip specific data for Freescale's accelerometers + * @chip_id: WHO_AM_I register's value + * @channels: struct iio_chan_spec matching the device's + * capabilities + * @num_channels: number of channels + * @mma_scales: scale factors for converting register values + * to m/s^2; 3 modes: 2g, 4g, 8g; 2 integers + * per mode: m/s^2 and micro m/s^2 + * @ev_cfg: event config register address + * @ev_cfg_ele: latch bit in event config register + * @ev_cfg_chan_shift: number of the bit to enable events in X + * direction; in event config register + * @ev_src: event source register address + * @ev_src_xe: bit in event source register that indicates + * an event in X direction + * @ev_src_ye: bit in event source register that indicates + * an event in Y direction + * @ev_src_ze: bit in event source register that indicates + * an event in Z direction + * @ev_ths: event threshold register address + * @ev_ths_mask: mask for the threshold value + * @ev_count: event count (period) register address + * + * Since not all chips supported by the driver support comparing high pass + * filtered data for events (interrupts), different interrupt sources are + * used for different chips and the relevant registers are included here. + */ +struct mma_chip_info { + u8 chip_id; + const struct iio_chan_spec *channels; + int num_channels; + const int mma_scales[3][2]; + u8 ev_cfg; + u8 ev_cfg_ele; + u8 ev_cfg_chan_shift; + u8 ev_src; + u8 ev_src_xe; + u8 ev_src_ye; + u8 ev_src_ze; + u8 ev_ths; + u8 ev_ths_mask; + u8 ev_count; }; static int mma8452_drdy(struct mma8452_data *data) @@ -143,16 +210,6 @@ static const int mma8452_samp_freq[8][2] = { {6, 250000}, {1, 560000} }; -/* - * Hardware has fullscale of -2G, -4G, -8G corresponding to raw value -2048 - * The userspace interface uses m/s^2 and we declare micro units - * So scale factor is given by: - * g * N * 1000000 / 2048 for N = 2, 4, 8 and g = 9.80665 - */ -static const int mma8452_scales[3][2] = { - {0, 9577}, {0, 19154}, {0, 38307} -}; - /* Datasheet table 35 (step time vs sample frequency) */ static const int mma8452_transient_time_step_us[8] = { 1250, @@ -189,8 +246,11 @@ static ssize_t mma8452_show_scale_avail(struct device *dev, struct device_attribute *attr, char *buf) { - return mma8452_show_int_plus_micros(buf, mma8452_scales, - ARRAY_SIZE(mma8452_scales)); + struct mma8452_data *data = iio_priv(i2c_get_clientdata( + to_i2c_client(dev))); + + return mma8452_show_int_plus_micros(buf, data->chip_info->mma_scales, + ARRAY_SIZE(data->chip_info->mma_scales)); } static ssize_t mma8452_show_hp_cutoff_avail(struct device *dev, @@ -221,9 +281,8 @@ static int mma8452_get_samp_freq_index(struct mma8452_data *data, static int mma8452_get_scale_index(struct mma8452_data *data, int val, int val2) { - return mma8452_get_int_plus_micros_index(mma8452_scales, - ARRAY_SIZE(mma8452_scales), - val, val2); + return mma8452_get_int_plus_micros_index(data->chip_info->mma_scales, + ARRAY_SIZE(data->chip_info->mma_scales), val, val2); } static int mma8452_get_hp_filter_index(struct mma8452_data *data, @@ -270,14 +329,15 @@ static int mma8452_read_raw(struct iio_dev *indio_dev, if (ret < 0) return ret; - *val = sign_extend32(be16_to_cpu(buffer[chan->scan_index]) >> 4, - 11); + *val = sign_extend32(be16_to_cpu( + buffer[chan->scan_index]) >> chan->scan_type.shift, + chan->scan_type.realbits - 1); return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: i = data->data_cfg & MMA8452_DATA_CFG_FS_MASK; - *val = mma8452_scales[i][0]; - *val2 = mma8452_scales[i][1]; + *val = data->chip_info->mma_scales[i][0]; + *val2 = data->chip_info->mma_scales[i][1]; return IIO_VAL_INT_PLUS_MICRO; case IIO_CHAN_INFO_SAMP_FREQ: @@ -439,17 +499,17 @@ static int mma8452_read_thresh(struct iio_dev *indio_dev, switch (info) { case IIO_EV_INFO_VALUE: ret = i2c_smbus_read_byte_data(data->client, - MMA8452_TRANSIENT_THS); + data->chip_info->ev_ths); if (ret < 0) return ret; - *val = ret & MMA8452_TRANSIENT_THS_MASK; + *val = ret & data->chip_info->ev_ths_mask; return IIO_VAL_INT; case IIO_EV_INFO_PERIOD: ret = i2c_smbus_read_byte_data(data->client, - MMA8452_TRANSIENT_COUNT); + data->chip_info->ev_count); if (ret < 0) return ret; @@ -497,7 +557,8 @@ static int mma8452_write_thresh(struct iio_dev *indio_dev, if (val < 0 || val > MMA8452_TRANSIENT_THS_MASK) return -EINVAL; - return mma8452_change_config(data, MMA8452_TRANSIENT_THS, val); + return mma8452_change_config(data, data->chip_info->ev_ths, + val); case IIO_EV_INFO_PERIOD: steps = (val * USEC_PER_SEC + val2) / @@ -507,7 +568,7 @@ static int mma8452_write_thresh(struct iio_dev *indio_dev, if (steps < 0 || steps > 0xff) return -EINVAL; - return mma8452_change_config(data, MMA8452_TRANSIENT_COUNT, + return mma8452_change_config(data, data->chip_info->ev_count, steps); case IIO_EV_INFO_HIGH_PASS_FILTER_3DB: @@ -538,13 +599,15 @@ static int mma8452_read_event_config(struct iio_dev *indio_dev, enum iio_event_direction dir) { struct mma8452_data *data = iio_priv(indio_dev); + const struct mma_chip_info *chip = data->chip_info; int ret; - ret = i2c_smbus_read_byte_data(data->client, MMA8452_TRANSIENT_CFG); + ret = i2c_smbus_read_byte_data(data->client, + data->chip_info->ev_cfg); if (ret < 0) return ret; - return ret & MMA8452_TRANSIENT_CFG_CHAN(chan->scan_index) ? 1 : 0; + return !!(ret & BIT(chan->scan_index + chip->ev_cfg_chan_shift)); } static int mma8452_write_event_config(struct iio_dev *indio_dev, @@ -554,20 +617,22 @@ static int mma8452_write_event_config(struct iio_dev *indio_dev, int state) { struct mma8452_data *data = iio_priv(indio_dev); + const struct mma_chip_info *chip = data->chip_info; int val; - val = i2c_smbus_read_byte_data(data->client, MMA8452_TRANSIENT_CFG); + val = i2c_smbus_read_byte_data(data->client, chip->ev_cfg); if (val < 0) return val; if (state) - val |= MMA8452_TRANSIENT_CFG_CHAN(chan->scan_index); + val |= BIT(chan->scan_index + chip->ev_cfg_chan_shift); else - val &= ~MMA8452_TRANSIENT_CFG_CHAN(chan->scan_index); + val &= ~BIT(chan->scan_index + chip->ev_cfg_chan_shift); - val |= MMA8452_TRANSIENT_CFG_ELE; + val |= chip->ev_cfg_ele; + val |= MMA8452_FF_MT_CFG_OAE; - return mma8452_change_config(data, MMA8452_TRANSIENT_CFG, val); + return mma8452_change_config(data, chip->ev_cfg, val); } static void mma8452_transient_interrupt(struct iio_dev *indio_dev) @@ -576,25 +641,25 @@ static void mma8452_transient_interrupt(struct iio_dev *indio_dev) s64 ts = iio_get_time_ns(); int src; - src = i2c_smbus_read_byte_data(data->client, MMA8452_TRANSIENT_SRC); + src = i2c_smbus_read_byte_data(data->client, data->chip_info->ev_src); if (src < 0) return; - if (src & MMA8452_TRANSIENT_SRC_XTRANSE) + if (src & data->chip_info->ev_src_xe) iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_X, IIO_EV_TYPE_MAG, IIO_EV_DIR_RISING), ts); - if (src & MMA8452_TRANSIENT_SRC_YTRANSE) + if (src & data->chip_info->ev_src_ye) iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_Y, IIO_EV_TYPE_MAG, IIO_EV_DIR_RISING), ts); - if (src & MMA8452_TRANSIENT_SRC_ZTRANSE) + if (src & data->chip_info->ev_src_ze) iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_Z, IIO_EV_TYPE_MAG, @@ -606,6 +671,7 @@ static irqreturn_t mma8452_interrupt(int irq, void *p) { struct iio_dev *indio_dev = p; struct mma8452_data *data = iio_priv(indio_dev); + const struct mma_chip_info *chip = data->chip_info; int ret = IRQ_NONE; int src; @@ -618,7 +684,10 @@ static irqreturn_t mma8452_interrupt(int irq, void *p) ret = IRQ_HANDLED; } - if (src & MMA8452_INT_TRANS) { + if ((src & MMA8452_INT_TRANS && + chip->ev_src == MMA8452_TRANSIENT_SRC) || + (src & MMA8452_INT_FF_MT && + chip->ev_src == MMA8452_FF_MT_SRC)) { mma8452_transient_interrupt(indio_dev); ret = IRQ_HANDLED; } @@ -680,6 +749,16 @@ static const struct iio_event_spec mma8452_transient_event[] = { }, }; +static const struct iio_event_spec mma8452_motion_event[] = { + { + .type = IIO_EV_TYPE_MAG, + .dir = IIO_EV_DIR_RISING, + .mask_separate = BIT(IIO_EV_INFO_ENABLE), + .mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_PERIOD) + }, +}; + /* * Threshold is configured in fixed 8G/127 steps regardless of * currently selected scale for measurement. @@ -693,10 +772,9 @@ static struct attribute *mma8452_event_attributes[] = { static struct attribute_group mma8452_event_attribute_group = { .attrs = mma8452_event_attributes, - .name = "events", }; -#define MMA8452_CHANNEL(axis, idx) { \ +#define MMA8452_CHANNEL(axis, idx, bits) { \ .type = IIO_ACCEL, \ .modified = 1, \ .channel2 = IIO_MOD_##axis, \ @@ -708,22 +786,144 @@ static struct attribute_group mma8452_event_attribute_group = { .scan_index = idx, \ .scan_type = { \ .sign = 's', \ - .realbits = 12, \ + .realbits = (bits), \ .storagebits = 16, \ - .shift = 4, \ + .shift = 16 - (bits), \ .endianness = IIO_BE, \ }, \ .event_spec = mma8452_transient_event, \ .num_event_specs = ARRAY_SIZE(mma8452_transient_event), \ } +#define MMA8652_CHANNEL(axis, idx, bits) { \ + .type = IIO_ACCEL, \ + .modified = 1, \ + .channel2 = IIO_MOD_##axis, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ + BIT(IIO_CHAN_INFO_CALIBBIAS), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ) | \ + BIT(IIO_CHAN_INFO_SCALE), \ + .scan_index = idx, \ + .scan_type = { \ + .sign = 's', \ + .realbits = (bits), \ + .storagebits = 16, \ + .shift = 16 - (bits), \ + .endianness = IIO_BE, \ + }, \ + .event_spec = mma8452_motion_event, \ + .num_event_specs = ARRAY_SIZE(mma8452_motion_event), \ +} + static const struct iio_chan_spec mma8452_channels[] = { - MMA8452_CHANNEL(X, 0), - MMA8452_CHANNEL(Y, 1), - MMA8452_CHANNEL(Z, 2), + MMA8452_CHANNEL(X, 0, 12), + MMA8452_CHANNEL(Y, 1, 12), + MMA8452_CHANNEL(Z, 2, 12), IIO_CHAN_SOFT_TIMESTAMP(3), }; +static const struct iio_chan_spec mma8453_channels[] = { + MMA8452_CHANNEL(X, 0, 10), + MMA8452_CHANNEL(Y, 1, 10), + MMA8452_CHANNEL(Z, 2, 10), + IIO_CHAN_SOFT_TIMESTAMP(3), +}; + +static const struct iio_chan_spec mma8652_channels[] = { + MMA8652_CHANNEL(X, 0, 12), + MMA8652_CHANNEL(Y, 1, 12), + MMA8652_CHANNEL(Z, 2, 12), + IIO_CHAN_SOFT_TIMESTAMP(3), +}; + +static const struct iio_chan_spec mma8653_channels[] = { + MMA8652_CHANNEL(X, 0, 10), + MMA8652_CHANNEL(Y, 1, 10), + MMA8652_CHANNEL(Z, 2, 10), + IIO_CHAN_SOFT_TIMESTAMP(3), +}; + +enum { + mma8452, + mma8453, + mma8652, + mma8653, +}; + +static const struct mma_chip_info mma_chip_info_table[] = { + [mma8452] = { + .chip_id = MMA8452_DEVICE_ID, + .channels = mma8452_channels, + .num_channels = ARRAY_SIZE(mma8452_channels), + /* + * Hardware has fullscale of -2G, -4G, -8G corresponding to + * raw value -2048 for 12 bit or -512 for 10 bit. + * The userspace interface uses m/s^2 and we declare micro units + * So scale factor for 12 bit here is given by: + * g * N * 1000000 / 2048 for N = 2, 4, 8 and g=9.80665 + */ + .mma_scales = { {0, 9577}, {0, 19154}, {0, 38307} }, + .ev_cfg = MMA8452_TRANSIENT_CFG, + .ev_cfg_ele = MMA8452_TRANSIENT_CFG_ELE, + .ev_cfg_chan_shift = 1, + .ev_src = MMA8452_TRANSIENT_SRC, + .ev_src_xe = MMA8452_TRANSIENT_SRC_XTRANSE, + .ev_src_ye = MMA8452_TRANSIENT_SRC_YTRANSE, + .ev_src_ze = MMA8452_TRANSIENT_SRC_ZTRANSE, + .ev_ths = MMA8452_TRANSIENT_THS, + .ev_ths_mask = MMA8452_TRANSIENT_THS_MASK, + .ev_count = MMA8452_TRANSIENT_COUNT, + }, + [mma8453] = { + .chip_id = MMA8453_DEVICE_ID, + .channels = mma8453_channels, + .num_channels = ARRAY_SIZE(mma8453_channels), + .mma_scales = { {0, 38307}, {0, 76614}, {0, 153228} }, + .ev_cfg = MMA8452_TRANSIENT_CFG, + .ev_cfg_ele = MMA8452_TRANSIENT_CFG_ELE, + .ev_cfg_chan_shift = 1, + .ev_src = MMA8452_TRANSIENT_SRC, + .ev_src_xe = MMA8452_TRANSIENT_SRC_XTRANSE, + .ev_src_ye = MMA8452_TRANSIENT_SRC_YTRANSE, + .ev_src_ze = MMA8452_TRANSIENT_SRC_ZTRANSE, + .ev_ths = MMA8452_TRANSIENT_THS, + .ev_ths_mask = MMA8452_TRANSIENT_THS_MASK, + .ev_count = MMA8452_TRANSIENT_COUNT, + }, + [mma8652] = { + .chip_id = MMA8652_DEVICE_ID, + .channels = mma8652_channels, + .num_channels = ARRAY_SIZE(mma8652_channels), + .mma_scales = { {0, 9577}, {0, 19154}, {0, 38307} }, + .ev_cfg = MMA8452_FF_MT_CFG, + .ev_cfg_ele = MMA8452_FF_MT_CFG_ELE, + .ev_cfg_chan_shift = 3, + .ev_src = MMA8452_FF_MT_SRC, + .ev_src_xe = MMA8452_FF_MT_SRC_XHE, + .ev_src_ye = MMA8452_FF_MT_SRC_YHE, + .ev_src_ze = MMA8452_FF_MT_SRC_ZHE, + .ev_ths = MMA8452_FF_MT_THS, + .ev_ths_mask = MMA8452_FF_MT_THS_MASK, + .ev_count = MMA8452_FF_MT_COUNT, + }, + [mma8653] = { + .chip_id = MMA8653_DEVICE_ID, + .channels = mma8653_channels, + .num_channels = ARRAY_SIZE(mma8653_channels), + .mma_scales = { {0, 38307}, {0, 76614}, {0, 153228} }, + .ev_cfg = MMA8452_FF_MT_CFG, + .ev_cfg_ele = MMA8452_FF_MT_CFG_ELE, + .ev_cfg_chan_shift = 3, + .ev_src = MMA8452_FF_MT_SRC, + .ev_src_xe = MMA8452_FF_MT_SRC_XHE, + .ev_src_ye = MMA8452_FF_MT_SRC_YHE, + .ev_src_ze = MMA8452_FF_MT_SRC_ZHE, + .ev_ths = MMA8452_FF_MT_THS, + .ev_ths_mask = MMA8452_FF_MT_THS_MASK, + .ev_count = MMA8452_FF_MT_COUNT, + }, +}; + static struct attribute *mma8452_attributes[] = { &iio_dev_attr_sampling_frequency_available.dev_attr.attr, &iio_dev_attr_in_accel_scale_available.dev_attr.attr, @@ -841,18 +1041,28 @@ static int mma8452_reset(struct i2c_client *client) return -ETIMEDOUT; } +static const struct of_device_id mma8452_dt_ids[] = { + { .compatible = "fsl,mma8452", .data = &mma_chip_info_table[mma8452] }, + { .compatible = "fsl,mma8453", .data = &mma_chip_info_table[mma8453] }, + { .compatible = "fsl,mma8652", .data = &mma_chip_info_table[mma8652] }, + { .compatible = "fsl,mma8653", .data = &mma_chip_info_table[mma8653] }, + { } +}; +MODULE_DEVICE_TABLE(of, mma8452_dt_ids); + static int mma8452_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct mma8452_data *data; struct iio_dev *indio_dev; int ret; + const struct of_device_id *match; - ret = i2c_smbus_read_byte_data(client, MMA8452_WHO_AM_I); - if (ret < 0) - return ret; - if (ret != MMA8452_DEVICE_ID) + match = of_match_device(mma8452_dt_ids, &client->dev); + if (!match) { + dev_err(&client->dev, "unknown device model\n"); return -ENODEV; + } indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); if (!indio_dev) @@ -861,14 +1071,33 @@ static int mma8452_probe(struct i2c_client *client, data = iio_priv(indio_dev); data->client = client; mutex_init(&data->lock); + data->chip_info = match->data; + + ret = i2c_smbus_read_byte_data(client, MMA8452_WHO_AM_I); + if (ret < 0) + return ret; + + switch (ret) { + case MMA8452_DEVICE_ID: + case MMA8453_DEVICE_ID: + case MMA8652_DEVICE_ID: + case MMA8653_DEVICE_ID: + if (ret == data->chip_info->chip_id) + break; + default: + return -ENODEV; + } + + dev_info(&client->dev, "registering %s accelerometer; ID 0x%x\n", + match->compatible, data->chip_info->chip_id); i2c_set_clientdata(client, indio_dev); indio_dev->info = &mma8452_info; indio_dev->name = id->name; indio_dev->dev.parent = &client->dev; indio_dev->modes = INDIO_DIRECT_MODE; - indio_dev->channels = mma8452_channels; - indio_dev->num_channels = ARRAY_SIZE(mma8452_channels); + indio_dev->channels = data->chip_info->channels; + indio_dev->num_channels = data->chip_info->num_channels; indio_dev->available_scan_masks = mma8452_scan_masks; ret = mma8452_reset(client); @@ -892,13 +1121,15 @@ static int mma8452_probe(struct i2c_client *client, if (client->irq) { /* - * Although we enable the transient interrupt source once and - * for all here the transient event detection itself is not - * enabled until userspace asks for it by - * mma8452_write_event_config() + * Although we enable the interrupt sources once and for + * all here the event detection itself is not enabled until + * userspace asks for it by mma8452_write_event_config() */ - int supported_interrupts = MMA8452_INT_DRDY | MMA8452_INT_TRANS; - int enabled_interrupts = MMA8452_INT_TRANS; + int supported_interrupts = MMA8452_INT_DRDY | + MMA8452_INT_TRANS | + MMA8452_INT_FF_MT; + int enabled_interrupts = MMA8452_INT_TRANS | + MMA8452_INT_FF_MT; /* Assume wired to INT1 pin */ ret = i2c_smbus_write_byte_data(client, @@ -987,17 +1218,14 @@ static SIMPLE_DEV_PM_OPS(mma8452_pm_ops, mma8452_suspend, mma8452_resume); #endif static const struct i2c_device_id mma8452_id[] = { - { "mma8452", 0 }, + { "mma8452", mma8452 }, + { "mma8453", mma8453 }, + { "mma8652", mma8652 }, + { "mma8653", mma8653 }, { } }; MODULE_DEVICE_TABLE(i2c, mma8452_id); -static const struct of_device_id mma8452_dt_ids[] = { - { .compatible = "fsl,mma8452" }, - { } -}; -MODULE_DEVICE_TABLE(of, mma8452_dt_ids); - static struct i2c_driver mma8452_driver = { .driver = { .name = "mma8452", diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c index 771858cb67a1..9408ef3add58 100644 --- a/drivers/iio/accel/mma9553.c +++ b/drivers/iio/accel/mma9553.c @@ -26,7 +26,6 @@ #define MMA9553_DRV_NAME "mma9553" #define MMA9553_IRQ_NAME "mma9553_event" -#define MMA9553_GPIO_NAME "mma9553_int" /* Pedometer configuration registers (R/W) */ #define MMA9553_REG_CONF_SLEEPMIN 0x00 @@ -1073,31 +1072,6 @@ static irqreturn_t mma9553_event_handler(int irq, void *private) return IRQ_HANDLED; } -static int mma9553_gpio_probe(struct i2c_client *client) -{ - struct device *dev; - struct gpio_desc *gpio; - int ret; - - if (!client) - return -EINVAL; - - dev = &client->dev; - - /* data ready GPIO interrupt pin */ - gpio = devm_gpiod_get_index(dev, MMA9553_GPIO_NAME, 0, GPIOD_IN); - if (IS_ERR(gpio)) { - dev_err(dev, "ACPI GPIO get index failed\n"); - return PTR_ERR(gpio); - } - - ret = gpiod_to_irq(gpio); - - dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret); - - return ret; -} - static const char *mma9553_match_acpi_device(struct device *dev) { const struct acpi_device_id *id; @@ -1146,9 +1120,6 @@ static int mma9553_probe(struct i2c_client *client, indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &mma9553_info; - if (client->irq < 0) - client->irq = mma9553_gpio_probe(client); - if (client->irq > 0) { ret = devm_request_threaded_irq(&client->dev, client->irq, mma9553_irq_handler, diff --git a/drivers/iio/accel/mxc4005.c b/drivers/iio/accel/mxc4005.c new file mode 100644 index 000000000000..e72e218c2696 --- /dev/null +++ b/drivers/iio/accel/mxc4005.c @@ -0,0 +1,567 @@ +/* + * 3-axis accelerometer driver for MXC4005XC Memsic sensor + * + * Copyright (c) 2014, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + */ + +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/iio/iio.h> +#include <linux/acpi.h> +#include <linux/gpio/consumer.h> +#include <linux/regmap.h> +#include <linux/iio/sysfs.h> +#include <linux/iio/trigger.h> +#include <linux/iio/buffer.h> +#include <linux/iio/triggered_buffer.h> +#include <linux/iio/trigger_consumer.h> + +#define MXC4005_DRV_NAME "mxc4005" +#define MXC4005_IRQ_NAME "mxc4005_event" +#define MXC4005_REGMAP_NAME "mxc4005_regmap" + +#define MXC4005_REG_XOUT_UPPER 0x03 +#define MXC4005_REG_XOUT_LOWER 0x04 +#define MXC4005_REG_YOUT_UPPER 0x05 +#define MXC4005_REG_YOUT_LOWER 0x06 +#define MXC4005_REG_ZOUT_UPPER 0x07 +#define MXC4005_REG_ZOUT_LOWER 0x08 + +#define MXC4005_REG_INT_MASK1 0x0B +#define MXC4005_REG_INT_MASK1_BIT_DRDYE 0x01 + +#define MXC4005_REG_INT_CLR1 0x01 +#define MXC4005_REG_INT_CLR1_BIT_DRDYC 0x01 + +#define MXC4005_REG_CONTROL 0x0D +#define MXC4005_REG_CONTROL_MASK_FSR GENMASK(6, 5) +#define MXC4005_CONTROL_FSR_SHIFT 5 + +#define MXC4005_REG_DEVICE_ID 0x0E + +enum mxc4005_axis { + AXIS_X, + AXIS_Y, + AXIS_Z, +}; + +enum mxc4005_range { + MXC4005_RANGE_2G, + MXC4005_RANGE_4G, + MXC4005_RANGE_8G, +}; + +struct mxc4005_data { + struct device *dev; + struct mutex mutex; + struct regmap *regmap; + struct iio_trigger *dready_trig; + __be16 buffer[8]; + bool trigger_enabled; +}; + +/* + * MXC4005 can operate in the following ranges: + * +/- 2G, 4G, 8G (the default +/-2G) + * + * (2 + 2) * 9.81 / (2^12 - 1) = 0.009582 + * (4 + 4) * 9.81 / (2^12 - 1) = 0.019164 + * (8 + 8) * 9.81 / (2^12 - 1) = 0.038329 + */ +static const struct { + u8 range; + int scale; +} mxc4005_scale_table[] = { + {MXC4005_RANGE_2G, 9582}, + {MXC4005_RANGE_4G, 19164}, + {MXC4005_RANGE_8G, 38329}, +}; + + +static IIO_CONST_ATTR(in_accel_scale_available, "0.009582 0.019164 0.038329"); + +static struct attribute *mxc4005_attributes[] = { + &iio_const_attr_in_accel_scale_available.dev_attr.attr, + NULL, +}; + +static const struct attribute_group mxc4005_attrs_group = { + .attrs = mxc4005_attributes, +}; + +static bool mxc4005_is_readable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case MXC4005_REG_XOUT_UPPER: + case MXC4005_REG_XOUT_LOWER: + case MXC4005_REG_YOUT_UPPER: + case MXC4005_REG_YOUT_LOWER: + case MXC4005_REG_ZOUT_UPPER: + case MXC4005_REG_ZOUT_LOWER: + case MXC4005_REG_DEVICE_ID: + case MXC4005_REG_CONTROL: + return true; + default: + return false; + } +} + +static bool mxc4005_is_writeable_reg(struct device *dev, unsigned int reg) +{ + switch (reg) { + case MXC4005_REG_INT_CLR1: + case MXC4005_REG_INT_MASK1: + case MXC4005_REG_CONTROL: + return true; + default: + return false; + } +} + +static const struct regmap_config mxc4005_regmap_config = { + .name = MXC4005_REGMAP_NAME, + + .reg_bits = 8, + .val_bits = 8, + + .max_register = MXC4005_REG_DEVICE_ID, + + .readable_reg = mxc4005_is_readable_reg, + .writeable_reg = mxc4005_is_writeable_reg, +}; + +static int mxc4005_read_xyz(struct mxc4005_data *data) +{ + int ret; + + ret = regmap_bulk_read(data->regmap, MXC4005_REG_XOUT_UPPER, + (u8 *) data->buffer, sizeof(data->buffer)); + if (ret < 0) { + dev_err(data->dev, "failed to read axes\n"); + return ret; + } + + return 0; +} + +static int mxc4005_read_axis(struct mxc4005_data *data, + unsigned int addr) +{ + __be16 reg; + int ret; + + ret = regmap_bulk_read(data->regmap, addr, (u8 *) ®, sizeof(reg)); + if (ret < 0) { + dev_err(data->dev, "failed to read reg %02x\n", addr); + return ret; + } + + return be16_to_cpu(reg); +} + +static int mxc4005_read_scale(struct mxc4005_data *data) +{ + unsigned int reg; + int ret; + int i; + + ret = regmap_read(data->regmap, MXC4005_REG_CONTROL, ®); + if (ret < 0) { + dev_err(data->dev, "failed to read reg_control\n"); + return ret; + } + + i = reg >> MXC4005_CONTROL_FSR_SHIFT; + + if (i < 0 || i >= ARRAY_SIZE(mxc4005_scale_table)) + return -EINVAL; + + return mxc4005_scale_table[i].scale; +} + +static int mxc4005_set_scale(struct mxc4005_data *data, int val) +{ + unsigned int reg; + int i; + int ret; + + for (i = 0; i < ARRAY_SIZE(mxc4005_scale_table); i++) { + if (mxc4005_scale_table[i].scale == val) { + reg = i << MXC4005_CONTROL_FSR_SHIFT; + ret = regmap_update_bits(data->regmap, + MXC4005_REG_CONTROL, + MXC4005_REG_CONTROL_MASK_FSR, + reg); + if (ret < 0) + dev_err(data->dev, + "failed to write reg_control\n"); + return ret; + } + } + + return -EINVAL; +} + +static int mxc4005_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct mxc4005_data *data = iio_priv(indio_dev); + int ret; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + switch (chan->type) { + case IIO_ACCEL: + if (iio_buffer_enabled(indio_dev)) + return -EBUSY; + + ret = mxc4005_read_axis(data, chan->address); + if (ret < 0) + return ret; + *val = sign_extend32(ret >> chan->scan_type.shift, + chan->scan_type.realbits - 1); + return IIO_VAL_INT; + default: + return -EINVAL; + } + case IIO_CHAN_INFO_SCALE: + ret = mxc4005_read_scale(data); + if (ret < 0) + return ret; + + *val = 0; + *val2 = ret; + return IIO_VAL_INT_PLUS_MICRO; + default: + return -EINVAL; + } +} + +static int mxc4005_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct mxc4005_data *data = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_SCALE: + if (val != 0) + return -EINVAL; + + return mxc4005_set_scale(data, val2); + default: + return -EINVAL; + } +} + +static const struct iio_info mxc4005_info = { + .driver_module = THIS_MODULE, + .read_raw = mxc4005_read_raw, + .write_raw = mxc4005_write_raw, + .attrs = &mxc4005_attrs_group, +}; + +static const unsigned long mxc4005_scan_masks[] = { + BIT(AXIS_X) | BIT(AXIS_Y) | BIT(AXIS_Z), + 0 +}; + +#define MXC4005_CHANNEL(_axis, _addr) { \ + .type = IIO_ACCEL, \ + .modified = 1, \ + .channel2 = IIO_MOD_##_axis, \ + .address = _addr, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ + .scan_index = AXIS_##_axis, \ + .scan_type = { \ + .sign = 's', \ + .realbits = 12, \ + .storagebits = 16, \ + .shift = 4, \ + .endianness = IIO_BE, \ + }, \ +} + +static const struct iio_chan_spec mxc4005_channels[] = { + MXC4005_CHANNEL(X, MXC4005_REG_XOUT_UPPER), + MXC4005_CHANNEL(Y, MXC4005_REG_YOUT_UPPER), + MXC4005_CHANNEL(Z, MXC4005_REG_ZOUT_UPPER), + IIO_CHAN_SOFT_TIMESTAMP(3), +}; + +static irqreturn_t mxc4005_trigger_handler(int irq, void *private) +{ + struct iio_poll_func *pf = private; + struct iio_dev *indio_dev = pf->indio_dev; + struct mxc4005_data *data = iio_priv(indio_dev); + int ret; + + ret = mxc4005_read_xyz(data); + if (ret < 0) + goto err; + + iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, + pf->timestamp); + +err: + iio_trigger_notify_done(indio_dev->trig); + + return IRQ_HANDLED; +} + +static int mxc4005_clr_intr(struct mxc4005_data *data) +{ + int ret; + + /* clear interrupt */ + ret = regmap_write(data->regmap, MXC4005_REG_INT_CLR1, + MXC4005_REG_INT_CLR1_BIT_DRDYC); + if (ret < 0) { + dev_err(data->dev, "failed to write to reg_int_clr1\n"); + return ret; + } + + return 0; +} + +static int mxc4005_set_trigger_state(struct iio_trigger *trig, + bool state) +{ + struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); + struct mxc4005_data *data = iio_priv(indio_dev); + int ret; + + mutex_lock(&data->mutex); + if (state) { + ret = regmap_write(data->regmap, MXC4005_REG_INT_MASK1, + MXC4005_REG_INT_MASK1_BIT_DRDYE); + } else { + ret = regmap_write(data->regmap, MXC4005_REG_INT_MASK1, + ~MXC4005_REG_INT_MASK1_BIT_DRDYE); + } + + if (ret < 0) { + mutex_unlock(&data->mutex); + dev_err(data->dev, "failed to update reg_int_mask1"); + return ret; + } + + data->trigger_enabled = state; + mutex_unlock(&data->mutex); + + return 0; +} + +static int mxc4005_trigger_try_reen(struct iio_trigger *trig) +{ + struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); + struct mxc4005_data *data = iio_priv(indio_dev); + + if (!data->dready_trig) + return 0; + + return mxc4005_clr_intr(data); +} + +static const struct iio_trigger_ops mxc4005_trigger_ops = { + .set_trigger_state = mxc4005_set_trigger_state, + .try_reenable = mxc4005_trigger_try_reen, + .owner = THIS_MODULE, +}; + +static int mxc4005_gpio_probe(struct i2c_client *client, + struct mxc4005_data *data) +{ + struct device *dev; + struct gpio_desc *gpio; + int ret; + + if (!client) + return -EINVAL; + + dev = &client->dev; + + gpio = devm_gpiod_get_index(dev, "mxc4005_int", 0, GPIOD_IN); + if (IS_ERR(gpio)) { + dev_err(dev, "failed to get acpi gpio index\n"); + return PTR_ERR(gpio); + } + + ret = gpiod_to_irq(gpio); + + dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret); + + return ret; +} + +static int mxc4005_chip_init(struct mxc4005_data *data) +{ + int ret; + unsigned int reg; + + ret = regmap_read(data->regmap, MXC4005_REG_DEVICE_ID, ®); + if (ret < 0) { + dev_err(data->dev, "failed to read chip id\n"); + return ret; + } + + dev_dbg(data->dev, "MXC4005 chip id %02x\n", reg); + + return 0; +} + +static int mxc4005_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct mxc4005_data *data; + struct iio_dev *indio_dev; + struct regmap *regmap; + int ret; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + regmap = devm_regmap_init_i2c(client, &mxc4005_regmap_config); + if (IS_ERR(regmap)) { + dev_err(&client->dev, "failed to initialize regmap\n"); + return PTR_ERR(regmap); + } + + data = iio_priv(indio_dev); + i2c_set_clientdata(client, indio_dev); + data->dev = &client->dev; + data->regmap = regmap; + + ret = mxc4005_chip_init(data); + if (ret < 0) { + dev_err(&client->dev, "failed to initialize chip\n"); + return ret; + } + + mutex_init(&data->mutex); + + indio_dev->dev.parent = &client->dev; + indio_dev->channels = mxc4005_channels; + indio_dev->num_channels = ARRAY_SIZE(mxc4005_channels); + indio_dev->available_scan_masks = mxc4005_scan_masks; + indio_dev->name = MXC4005_DRV_NAME; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->info = &mxc4005_info; + + ret = iio_triggered_buffer_setup(indio_dev, + iio_pollfunc_store_time, + mxc4005_trigger_handler, + NULL); + if (ret < 0) { + dev_err(&client->dev, + "failed to setup iio triggered buffer\n"); + return ret; + } + + if (client->irq < 0) + client->irq = mxc4005_gpio_probe(client, data); + + if (client->irq > 0) { + data->dready_trig = devm_iio_trigger_alloc(&client->dev, + "%s-dev%d", + indio_dev->name, + indio_dev->id); + if (!data->dready_trig) + return -ENOMEM; + + ret = devm_request_threaded_irq(&client->dev, client->irq, + iio_trigger_generic_data_rdy_poll, + NULL, + IRQF_TRIGGER_FALLING | + IRQF_ONESHOT, + MXC4005_IRQ_NAME, + data->dready_trig); + if (ret) { + dev_err(&client->dev, + "failed to init threaded irq\n"); + goto err_buffer_cleanup; + } + + data->dready_trig->dev.parent = &client->dev; + data->dready_trig->ops = &mxc4005_trigger_ops; + iio_trigger_set_drvdata(data->dready_trig, indio_dev); + indio_dev->trig = data->dready_trig; + iio_trigger_get(indio_dev->trig); + ret = iio_trigger_register(data->dready_trig); + if (ret) { + dev_err(&client->dev, + "failed to register trigger\n"); + goto err_trigger_unregister; + } + } + + ret = iio_device_register(indio_dev); + if (ret < 0) { + dev_err(&client->dev, + "unable to register iio device %d\n", ret); + goto err_buffer_cleanup; + } + + return 0; + +err_trigger_unregister: + iio_trigger_unregister(data->dready_trig); +err_buffer_cleanup: + iio_triggered_buffer_cleanup(indio_dev); + + return ret; +} + +static int mxc4005_remove(struct i2c_client *client) +{ + struct iio_dev *indio_dev = i2c_get_clientdata(client); + struct mxc4005_data *data = iio_priv(indio_dev); + + iio_device_unregister(indio_dev); + + iio_triggered_buffer_cleanup(indio_dev); + if (data->dready_trig) + iio_trigger_unregister(data->dready_trig); + + return 0; +} + +static const struct acpi_device_id mxc4005_acpi_match[] = { + {"MXC4005", 0}, + { }, +}; +MODULE_DEVICE_TABLE(acpi, mxc4005_acpi_match); + +static const struct i2c_device_id mxc4005_id[] = { + {"mxc4005", 0}, + { }, +}; +MODULE_DEVICE_TABLE(i2c, mxc4005_id); + +static struct i2c_driver mxc4005_driver = { + .driver = { + .name = MXC4005_DRV_NAME, + .acpi_match_table = ACPI_PTR(mxc4005_acpi_match), + }, + .probe = mxc4005_probe, + .remove = mxc4005_remove, + .id_table = mxc4005_id, +}; + +module_i2c_driver(mxc4005_driver); + +MODULE_AUTHOR("Teodora Baluta <teodora.baluta@intel.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("MXC4005 3-axis accelerometer driver"); diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c index ff30f8806880..197a08b4e2f3 100644 --- a/drivers/iio/accel/st_accel_core.c +++ b/drivers/iio/accel/st_accel_core.c @@ -149,8 +149,6 @@ #define ST_ACCEL_4_BDU_MASK 0x40 #define ST_ACCEL_4_DRDY_IRQ_ADDR 0x21 #define ST_ACCEL_4_DRDY_IRQ_INT1_MASK 0x04 -#define ST_ACCEL_4_IG1_EN_ADDR 0x21 -#define ST_ACCEL_4_IG1_EN_MASK 0x08 #define ST_ACCEL_4_MULTIREAD_BIT true /* CUSTOM VALUES FOR SENSOR 5 */ @@ -489,10 +487,6 @@ static const struct st_sensor_settings st_accel_sensors_settings[] = { .drdy_irq = { .addr = ST_ACCEL_4_DRDY_IRQ_ADDR, .mask_int1 = ST_ACCEL_4_DRDY_IRQ_INT1_MASK, - .ig1 = { - .en_addr = ST_ACCEL_4_IG1_EN_ADDR, - .en_mask = ST_ACCEL_4_IG1_EN_MASK, - }, }, .multi_read_bit = ST_ACCEL_4_MULTIREAD_BIT, .bootime = 2, /* guess */ @@ -618,6 +612,7 @@ static const struct iio_info accel_info = { .attrs = &st_accel_attribute_group, .read_raw = &st_accel_read_raw, .write_raw = &st_accel_write_raw, + .debugfs_reg_access = &st_sensors_debugfs_reg_access, }; #ifdef CONFIG_IIO_TRIGGER diff --git a/drivers/iio/accel/st_accel_spi.c b/drivers/iio/accel/st_accel_spi.c index 54b61a3961c3..f71b0d391272 100644 --- a/drivers/iio/accel/st_accel_spi.c +++ b/drivers/iio/accel/st_accel_spi.c @@ -64,7 +64,6 @@ MODULE_DEVICE_TABLE(spi, st_accel_id_table); static struct spi_driver st_accel_driver = { .driver = { - .owner = THIS_MODULE, .name = "st-accel-spi", }, .probe = st_accel_spi_probe, diff --git a/drivers/iio/accel/stk8312.c b/drivers/iio/accel/stk8312.c index c764af284c94..85fe7f7247c1 100644 --- a/drivers/iio/accel/stk8312.c +++ b/drivers/iio/accel/stk8312.c @@ -50,7 +50,6 @@ #define STK8312_ALL_CHANNEL_SIZE 3 #define STK8312_DRIVER_NAME "stk8312" -#define STK8312_GPIO "stk8312_gpio" #define STK8312_IRQ_NAME "stk8312_event" /* @@ -504,30 +503,6 @@ static const struct iio_buffer_setup_ops stk8312_buffer_setup_ops = { .postdisable = stk8312_buffer_postdisable, }; -static int stk8312_gpio_probe(struct i2c_client *client) -{ - struct device *dev; - struct gpio_desc *gpio; - int ret; - - if (!client) - return -EINVAL; - - dev = &client->dev; - - /* data ready gpio interrupt pin */ - gpio = devm_gpiod_get_index(dev, STK8312_GPIO, 0, GPIOD_IN); - if (IS_ERR(gpio)) { - dev_err(dev, "acpi gpio get index failed\n"); - return PTR_ERR(gpio); - } - - ret = gpiod_to_irq(gpio); - dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret); - - return ret; -} - static int stk8312_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -569,10 +544,7 @@ static int stk8312_probe(struct i2c_client *client, if (ret < 0) return ret; - if (client->irq < 0) - client->irq = stk8312_gpio_probe(client); - - if (client->irq >= 0) { + if (client->irq > 0) { ret = devm_request_threaded_irq(&client->dev, client->irq, stk8312_data_rdy_trig_poll, NULL, diff --git a/drivers/iio/accel/stk8ba50.c b/drivers/iio/accel/stk8ba50.c index 80f77d8704b5..5709d9eb8f34 100644 --- a/drivers/iio/accel/stk8ba50.c +++ b/drivers/iio/accel/stk8ba50.c @@ -45,7 +45,6 @@ #define STK8BA50_ALL_CHANNEL_SIZE 6 #define STK8BA50_DRIVER_NAME "stk8ba50" -#define STK8BA50_GPIO "stk8ba50_gpio" #define STK8BA50_IRQ_NAME "stk8ba50_event" #define STK8BA50_SCALE_AVAIL "0.0384 0.0767 0.1534 0.3069" @@ -388,30 +387,6 @@ static const struct iio_buffer_setup_ops stk8ba50_buffer_setup_ops = { .postdisable = stk8ba50_buffer_postdisable, }; -static int stk8ba50_gpio_probe(struct i2c_client *client) -{ - struct device *dev; - struct gpio_desc *gpio; - int ret; - - if (!client) - return -EINVAL; - - dev = &client->dev; - - /* data ready gpio interrupt pin */ - gpio = devm_gpiod_get_index(dev, STK8BA50_GPIO, 0, GPIOD_IN); - if (IS_ERR(gpio)) { - dev_err(dev, "acpi gpio get index failed\n"); - return PTR_ERR(gpio); - } - - ret = gpiod_to_irq(gpio); - dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret); - - return ret; -} - static int stk8ba50_probe(struct i2c_client *client, const struct i2c_device_id *id) { @@ -465,10 +440,7 @@ static int stk8ba50_probe(struct i2c_client *client, goto err_power_off; } - if (client->irq < 0) - client->irq = stk8ba50_gpio_probe(client); - - if (client->irq >= 0) { + if (client->irq > 0) { ret = devm_request_threaded_irq(&client->dev, client->irq, stk8ba50_data_rdy_trig_poll, NULL, diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index 50c103d75af9..7868c744fd4b 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -149,6 +149,17 @@ config BERLIN2_ADC Marvell Berlin2 ADC driver. This ADC has 8 channels, with one used for temperature measurement. +config CC10001_ADC + tristate "Cosmic Circuits 10001 ADC driver" + depends on HAS_IOMEM && HAVE_CLK && REGULATOR + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + help + Say yes here to build support for Cosmic Circuits 10001 ADC. + + This driver can also be built as a module. If so, the module will be + called cc10001_adc. + config DA9150_GPADC tristate "Dialog DA9150 GPADC driver support" depends on MFD_DA9150 @@ -161,17 +172,6 @@ config DA9150_GPADC To compile this driver as a module, choose M here: the module will be called berlin2-adc. -config CC10001_ADC - tristate "Cosmic Circuits 10001 ADC driver" - depends on HAS_IOMEM && HAVE_CLK && REGULATOR - select IIO_BUFFER - select IIO_TRIGGERED_BUFFER - help - Say yes here to build support for Cosmic Circuits 10001 ADC. - - This driver can also be built as a module. If so, the module will be - called cc10001_adc. - config EXYNOS_ADC tristate "Exynos ADC driver support" depends on ARCH_EXYNOS || ARCH_S3C24XX || ARCH_S3C64XX || (OF && COMPILE_TEST) @@ -183,6 +183,17 @@ config EXYNOS_ADC To compile this driver as a module, choose M here: the module will be called exynos_adc. +config HI8435 + tristate "Holt Integrated Circuits HI-8435 threshold detector" + select IIO_TRIGGERED_EVENT + depends on SPI + help + If you say yes here you get support for Holt Integrated Circuits + HI-8435 chip. + + This driver can also be built as a module. If so, the module will be + called hi8435. + config LP8788_ADC tristate "LP8788 ADC driver" depends on MFD_LP8788 @@ -361,6 +372,8 @@ config TWL6030_GPADC config VF610_ADC tristate "Freescale vf610 ADC driver" depends on OF + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER help Say yes here to support for Vybrid board analog-to-digital converter. Since the IP is used for i.MX6SLX, the driver also support i.MX6SLX. diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile index a0962103e866..99b37a963a1e 100644 --- a/drivers/iio/adc/Makefile +++ b/drivers/iio/adc/Makefile @@ -16,9 +16,10 @@ obj-$(CONFIG_AD799X) += ad799x.o obj-$(CONFIG_AT91_ADC) += at91_adc.o obj-$(CONFIG_AXP288_ADC) += axp288_adc.o obj-$(CONFIG_BERLIN2_ADC) += berlin2-adc.o -obj-$(CONFIG_DA9150_GPADC) += da9150-gpadc.o obj-$(CONFIG_CC10001_ADC) += cc10001_adc.o +obj-$(CONFIG_DA9150_GPADC) += da9150-gpadc.o obj-$(CONFIG_EXYNOS_ADC) += exynos_adc.o +obj-$(CONFIG_HI8435) += hi8435.o obj-$(CONFIG_LP8788_ADC) += lp8788_adc.o obj-$(CONFIG_MAX1027) += max1027.o obj-$(CONFIG_MAX1363) += max1363.o diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c index 70f78c3062a7..21e19b60e2b9 100644 --- a/drivers/iio/adc/ad7266.c +++ b/drivers/iio/adc/ad7266.c @@ -509,7 +509,6 @@ MODULE_DEVICE_TABLE(spi, ad7266_id); static struct spi_driver ad7266_driver = { .driver = { .name = "ad7266", - .owner = THIS_MODULE, }, .probe = ad7266_probe, .remove = ad7266_remove, diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c index 4a8c0a2f49b6..62bb8f7ce4a0 100644 --- a/drivers/iio/adc/ad7298.c +++ b/drivers/iio/adc/ad7298.c @@ -378,7 +378,6 @@ MODULE_DEVICE_TABLE(spi, ad7298_id); static struct spi_driver ad7298_driver = { .driver = { .name = "ad7298", - .owner = THIS_MODULE, }, .probe = ad7298_probe, .remove = ad7298_remove, diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c index ce400ec176f1..be85c2a0ad97 100644 --- a/drivers/iio/adc/ad7476.c +++ b/drivers/iio/adc/ad7476.c @@ -302,7 +302,6 @@ MODULE_DEVICE_TABLE(spi, ad7476_id); static struct spi_driver ad7476_driver = { .driver = { .name = "ad7476", - .owner = THIS_MODULE, }, .probe = ad7476_probe, .remove = ad7476_remove, diff --git a/drivers/iio/adc/ad7791.c b/drivers/iio/adc/ad7791.c index c19f8fd1b4b7..cf172d58cd44 100644 --- a/drivers/iio/adc/ad7791.c +++ b/drivers/iio/adc/ad7791.c @@ -440,7 +440,6 @@ MODULE_DEVICE_TABLE(spi, ad7791_spi_ids); static struct spi_driver ad7791_driver = { .driver = { .name = "ad7791", - .owner = THIS_MODULE, }, .probe = ad7791_probe, .remove = ad7791_remove, diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c index b84922a4b32e..eea0c79111e7 100644 --- a/drivers/iio/adc/ad7793.c +++ b/drivers/iio/adc/ad7793.c @@ -852,7 +852,6 @@ MODULE_DEVICE_TABLE(spi, ad7793_id); static struct spi_driver ad7793_driver = { .driver = { .name = "ad7793", - .owner = THIS_MODULE, }, .probe = ad7793_probe, .remove = ad7793_remove, diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c index 2fd012ee99f5..2d3c397e66ad 100644 --- a/drivers/iio/adc/ad7887.c +++ b/drivers/iio/adc/ad7887.c @@ -356,7 +356,6 @@ MODULE_DEVICE_TABLE(spi, ad7887_id); static struct spi_driver ad7887_driver = { .driver = { .name = "ad7887", - .owner = THIS_MODULE, }, .probe = ad7887_probe, .remove = ad7887_remove, diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c index 28732c28e819..45e29ccd824f 100644 --- a/drivers/iio/adc/ad7923.c +++ b/drivers/iio/adc/ad7923.c @@ -357,7 +357,6 @@ MODULE_DEVICE_TABLE(spi, ad7923_id); static struct spi_driver ad7923_driver = { .driver = { .name = "ad7923", - .owner = THIS_MODULE, }, .probe = ad7923_probe, .remove = ad7923_remove, diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c index b99de00e57b8..01d71588d752 100644 --- a/drivers/iio/adc/ad799x.c +++ b/drivers/iio/adc/ad799x.c @@ -528,7 +528,6 @@ static struct attribute *ad799x_event_attributes[] = { static struct attribute_group ad799x_event_attrs_group = { .attrs = ad799x_event_attributes, - .name = "events", }; static const struct iio_info ad7991_info = { diff --git a/drivers/iio/adc/berlin2-adc.c b/drivers/iio/adc/berlin2-adc.c index 4946d9bf1764..71c806ecc722 100644 --- a/drivers/iio/adc/berlin2-adc.c +++ b/drivers/iio/adc/berlin2-adc.c @@ -27,13 +27,13 @@ #define BERLIN2_SM_CTRL_SM_SOC_INT BIT(1) #define BERLIN2_SM_CTRL_SOC_SM_INT BIT(2) #define BERLIN2_SM_CTRL_ADC_SEL(x) ((x) << 5) /* 0-15 */ -#define BERLIN2_SM_CTRL_ADC_SEL_MASK (0xf << 5) +#define BERLIN2_SM_CTRL_ADC_SEL_MASK GENMASK(8, 5) #define BERLIN2_SM_CTRL_ADC_POWER BIT(9) #define BERLIN2_SM_CTRL_ADC_CLKSEL_DIV2 (0x0 << 10) #define BERLIN2_SM_CTRL_ADC_CLKSEL_DIV3 (0x1 << 10) #define BERLIN2_SM_CTRL_ADC_CLKSEL_DIV4 (0x2 << 10) #define BERLIN2_SM_CTRL_ADC_CLKSEL_DIV8 (0x3 << 10) -#define BERLIN2_SM_CTRL_ADC_CLKSEL_MASK (0x3 << 10) +#define BERLIN2_SM_CTRL_ADC_CLKSEL_MASK GENMASK(11, 10) #define BERLIN2_SM_CTRL_ADC_START BIT(12) #define BERLIN2_SM_CTRL_ADC_RESET BIT(13) #define BERLIN2_SM_CTRL_ADC_BANDGAP_RDY BIT(14) @@ -50,7 +50,7 @@ #define BERLIN2_SM_CTRL_TSEN_MODE_10_50 (0x1 << 22) /* 10-50 C */ #define BERLIN2_SM_CTRL_TSEN_RESET BIT(29) #define BERLIN2_SM_ADC_DATA 0x20 -#define BERLIN2_SM_ADC_MASK 0x3ff +#define BERLIN2_SM_ADC_MASK GENMASK(9, 0) #define BERLIN2_SM_ADC_STATUS 0x1c #define BERLIN2_SM_ADC_STATUS_DATA_RDY(x) BIT(x) /* 0-15 */ #define BERLIN2_SM_ADC_STATUS_DATA_RDY_MASK GENMASK(15, 0) @@ -65,9 +65,9 @@ #define BERLIN2_SM_TSEN_CTRL_START BIT(8) #define BERLIN2_SM_TSEN_CTRL_SETTLING_4 (0x0 << 21) /* 4 us */ #define BERLIN2_SM_TSEN_CTRL_SETTLING_12 (0x1 << 21) /* 12 us */ -#define BERLIN2_SM_TSEN_CTRL_SETTLING_MASK (0x1 << 21) +#define BERLIN2_SM_TSEN_CTRL_SETTLING_MASK BIT(21) #define BERLIN2_SM_TSEN_CTRL_TRIM(x) ((x) << 22) -#define BERLIN2_SM_TSEN_CTRL_TRIM_MASK (0xf << 22) +#define BERLIN2_SM_TSEN_CTRL_TRIM_MASK GENMASK(25, 22) struct berlin2_adc_priv { struct regmap *regmap; @@ -78,13 +78,13 @@ struct berlin2_adc_priv { }; #define BERLIN2_ADC_CHANNEL(n, t) \ - { \ - .channel = n, \ - .datasheet_name = "channel"#n, \ - .type = t, \ - .indexed = 1, \ - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ - } + { \ + .channel = n, \ + .datasheet_name = "channel"#n, \ + .type = t, \ + .indexed = 1, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + } static const struct iio_chan_spec berlin2_adc_channels[] = { BERLIN2_ADC_CHANNEL(0, IIO_VOLTAGE), /* external input */ @@ -111,18 +111,24 @@ static int berlin2_adc_read(struct iio_dev *indio_dev, int channel) mutex_lock(&priv->lock); + /* Enable the interrupts */ + regmap_write(priv->regmap, BERLIN2_SM_ADC_STATUS, + BERLIN2_SM_ADC_STATUS_INT_EN(channel)); + /* Configure the ADC */ regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL, - BERLIN2_SM_CTRL_ADC_RESET | BERLIN2_SM_CTRL_ADC_SEL_MASK - | BERLIN2_SM_CTRL_ADC_START, - BERLIN2_SM_CTRL_ADC_SEL(channel) | BERLIN2_SM_CTRL_ADC_START); + BERLIN2_SM_CTRL_ADC_RESET | + BERLIN2_SM_CTRL_ADC_SEL_MASK | + BERLIN2_SM_CTRL_ADC_START, + BERLIN2_SM_CTRL_ADC_SEL(channel) | + BERLIN2_SM_CTRL_ADC_START); ret = wait_event_interruptible_timeout(priv->wq, priv->data_available, - msecs_to_jiffies(1000)); + msecs_to_jiffies(1000)); /* Disable the interrupts */ regmap_update_bits(priv->regmap, BERLIN2_SM_ADC_STATUS, - BERLIN2_SM_ADC_STATUS_INT_EN(channel), 0); + BERLIN2_SM_ADC_STATUS_INT_EN(channel), 0); if (ret == 0) ret = -ETIMEDOUT; @@ -132,7 +138,7 @@ static int berlin2_adc_read(struct iio_dev *indio_dev, int channel) } regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL, - BERLIN2_SM_CTRL_ADC_START, 0); + BERLIN2_SM_CTRL_ADC_START, 0); data = priv->data; priv->data_available = false; @@ -149,24 +155,31 @@ static int berlin2_adc_tsen_read(struct iio_dev *indio_dev) mutex_lock(&priv->lock); + /* Enable interrupts */ + regmap_write(priv->regmap, BERLIN2_SM_TSEN_STATUS, + BERLIN2_SM_TSEN_STATUS_INT_EN); + /* Configure the ADC */ regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL, - BERLIN2_SM_CTRL_TSEN_RESET | BERLIN2_SM_CTRL_ADC_ROTATE, - BERLIN2_SM_CTRL_ADC_ROTATE); + BERLIN2_SM_CTRL_TSEN_RESET | + BERLIN2_SM_CTRL_ADC_ROTATE, + BERLIN2_SM_CTRL_ADC_ROTATE); /* Configure the temperature sensor */ regmap_update_bits(priv->regmap, BERLIN2_SM_TSEN_CTRL, - BERLIN2_SM_TSEN_CTRL_TRIM_MASK | BERLIN2_SM_TSEN_CTRL_SETTLING_MASK - | BERLIN2_SM_TSEN_CTRL_START, - BERLIN2_SM_TSEN_CTRL_TRIM(3) | BERLIN2_SM_TSEN_CTRL_SETTLING_12 - | BERLIN2_SM_TSEN_CTRL_START); + BERLIN2_SM_TSEN_CTRL_TRIM_MASK | + BERLIN2_SM_TSEN_CTRL_SETTLING_MASK | + BERLIN2_SM_TSEN_CTRL_START, + BERLIN2_SM_TSEN_CTRL_TRIM(3) | + BERLIN2_SM_TSEN_CTRL_SETTLING_12 | + BERLIN2_SM_TSEN_CTRL_START); ret = wait_event_interruptible_timeout(priv->wq, priv->data_available, - msecs_to_jiffies(1000)); + msecs_to_jiffies(1000)); /* Disable interrupts */ regmap_update_bits(priv->regmap, BERLIN2_SM_TSEN_STATUS, - BERLIN2_SM_TSEN_STATUS_INT_EN, 0); + BERLIN2_SM_TSEN_STATUS_INT_EN, 0); if (ret == 0) ret = -ETIMEDOUT; @@ -176,7 +189,7 @@ static int berlin2_adc_tsen_read(struct iio_dev *indio_dev) } regmap_update_bits(priv->regmap, BERLIN2_SM_TSEN_CTRL, - BERLIN2_SM_TSEN_CTRL_START, 0); + BERLIN2_SM_TSEN_CTRL_START, 0); data = priv->data; priv->data_available = false; @@ -187,10 +200,9 @@ static int berlin2_adc_tsen_read(struct iio_dev *indio_dev) } static int berlin2_adc_read_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, int *val, int *val2, - long mask) + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) { - struct berlin2_adc_priv *priv = iio_priv(indio_dev); int temp; switch (mask) { @@ -198,10 +210,6 @@ static int berlin2_adc_read_raw(struct iio_dev *indio_dev, if (chan->type != IIO_VOLTAGE) return -EINVAL; - /* Enable the interrupts */ - regmap_write(priv->regmap, BERLIN2_SM_ADC_STATUS, - BERLIN2_SM_ADC_STATUS_INT_EN(chan->channel)); - *val = berlin2_adc_read(indio_dev, chan->channel); if (*val < 0) return *val; @@ -211,10 +219,6 @@ static int berlin2_adc_read_raw(struct iio_dev *indio_dev, if (chan->type != IIO_TEMP) return -EINVAL; - /* Enable interrupts */ - regmap_write(priv->regmap, BERLIN2_SM_TSEN_STATUS, - BERLIN2_SM_TSEN_STATUS_INT_EN); - temp = berlin2_adc_tsen_read(indio_dev); if (temp < 0) return temp; @@ -306,12 +310,12 @@ static int berlin2_adc_probe(struct platform_device *pdev) return tsen_irq; ret = devm_request_irq(&pdev->dev, irq, berlin2_adc_irq, 0, - pdev->dev.driver->name, indio_dev); + pdev->dev.driver->name, indio_dev); if (ret) return ret; ret = devm_request_irq(&pdev->dev, tsen_irq, berlin2_adc_tsen_irq, - 0, pdev->dev.driver->name, indio_dev); + 0, pdev->dev.driver->name, indio_dev); if (ret) return ret; @@ -328,13 +332,14 @@ static int berlin2_adc_probe(struct platform_device *pdev) /* Power up the ADC */ regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL, - BERLIN2_SM_CTRL_ADC_POWER, BERLIN2_SM_CTRL_ADC_POWER); + BERLIN2_SM_CTRL_ADC_POWER, + BERLIN2_SM_CTRL_ADC_POWER); ret = iio_device_register(indio_dev); if (ret) { /* Power down the ADC */ regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL, - BERLIN2_SM_CTRL_ADC_POWER, 0); + BERLIN2_SM_CTRL_ADC_POWER, 0); return ret; } @@ -350,7 +355,7 @@ static int berlin2_adc_remove(struct platform_device *pdev) /* Power down the ADC */ regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL, - BERLIN2_SM_CTRL_ADC_POWER, 0); + BERLIN2_SM_CTRL_ADC_POWER, 0); return 0; } diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c new file mode 100644 index 000000000000..c73c6c62a6ac --- /dev/null +++ b/drivers/iio/adc/hi8435.c @@ -0,0 +1,534 @@ +/* + * Holt Integrated Circuits HI-8435 threshold detector driver + * + * Copyright (C) 2015 Zodiac Inflight Innovations + * Copyright (C) 2015 Cogent Embedded, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/delay.h> +#include <linux/iio/events.h> +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> +#include <linux/iio/trigger.h> +#include <linux/iio/trigger_consumer.h> +#include <linux/iio/triggered_event.h> +#include <linux/interrupt.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/of_gpio.h> +#include <linux/spi/spi.h> +#include <linux/gpio/consumer.h> + +#define DRV_NAME "hi8435" + +/* Register offsets for HI-8435 */ +#define HI8435_CTRL_REG 0x02 +#define HI8435_PSEN_REG 0x04 +#define HI8435_TMDATA_REG 0x1E +#define HI8435_GOCENHYS_REG 0x3A +#define HI8435_SOCENHYS_REG 0x3C +#define HI8435_SO7_0_REG 0x10 +#define HI8435_SO15_8_REG 0x12 +#define HI8435_SO23_16_REG 0x14 +#define HI8435_SO31_24_REG 0x16 +#define HI8435_SO31_0_REG 0x78 + +#define HI8435_WRITE_OPCODE 0x00 +#define HI8435_READ_OPCODE 0x80 + +/* CTRL register bits */ +#define HI8435_CTRL_TEST 0x01 +#define HI8435_CTRL_SRST 0x02 + +struct hi8435_priv { + struct spi_device *spi; + struct mutex lock; + + unsigned long event_scan_mask; /* soft mask/unmask channels events */ + unsigned int event_prev_val; + + unsigned threshold_lo[2]; /* GND-Open and Supply-Open thresholds */ + unsigned threshold_hi[2]; /* GND-Open and Supply-Open thresholds */ + u8 reg_buffer[3] ____cacheline_aligned; +}; + +static int hi8435_readb(struct hi8435_priv *priv, u8 reg, u8 *val) +{ + reg |= HI8435_READ_OPCODE; + return spi_write_then_read(priv->spi, ®, 1, val, 1); +} + +static int hi8435_readw(struct hi8435_priv *priv, u8 reg, u16 *val) +{ + int ret; + __be16 be_val; + + reg |= HI8435_READ_OPCODE; + ret = spi_write_then_read(priv->spi, ®, 1, &be_val, 2); + *val = be16_to_cpu(be_val); + + return ret; +} + +static int hi8435_readl(struct hi8435_priv *priv, u8 reg, u32 *val) +{ + int ret; + __be32 be_val; + + reg |= HI8435_READ_OPCODE; + ret = spi_write_then_read(priv->spi, ®, 1, &be_val, 4); + *val = be32_to_cpu(be_val); + + return ret; +} + +static int hi8435_writeb(struct hi8435_priv *priv, u8 reg, u8 val) +{ + priv->reg_buffer[0] = reg | HI8435_WRITE_OPCODE; + priv->reg_buffer[1] = val; + + return spi_write(priv->spi, priv->reg_buffer, 2); +} + +static int hi8435_writew(struct hi8435_priv *priv, u8 reg, u16 val) +{ + priv->reg_buffer[0] = reg | HI8435_WRITE_OPCODE; + priv->reg_buffer[1] = (val >> 8) & 0xff; + priv->reg_buffer[2] = val & 0xff; + + return spi_write(priv->spi, priv->reg_buffer, 3); +} + +static int hi8435_read_event_config(struct iio_dev *idev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir) +{ + struct hi8435_priv *priv = iio_priv(idev); + + return !!(priv->event_scan_mask & BIT(chan->channel)); +} + +static int hi8435_write_event_config(struct iio_dev *idev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, int state) +{ + struct hi8435_priv *priv = iio_priv(idev); + + priv->event_scan_mask &= ~BIT(chan->channel); + if (state) + priv->event_scan_mask |= BIT(chan->channel); + + return 0; +} + +static int hi8435_read_event_value(struct iio_dev *idev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, + int *val, int *val2) +{ + struct hi8435_priv *priv = iio_priv(idev); + int ret; + u8 mode, psen; + u16 reg; + + ret = hi8435_readb(priv, HI8435_PSEN_REG, &psen); + if (ret < 0) + return ret; + + /* Supply-Open or GND-Open sensing mode */ + mode = !!(psen & BIT(chan->channel / 8)); + + ret = hi8435_readw(priv, mode ? HI8435_SOCENHYS_REG : + HI8435_GOCENHYS_REG, ®); + if (ret < 0) + return ret; + + if (dir == IIO_EV_DIR_FALLING) + *val = ((reg & 0xff) - (reg >> 8)) / 2; + else if (dir == IIO_EV_DIR_RISING) + *val = ((reg & 0xff) + (reg >> 8)) / 2; + + return IIO_VAL_INT; +} + +static int hi8435_write_event_value(struct iio_dev *idev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, + int val, int val2) +{ + struct hi8435_priv *priv = iio_priv(idev); + int ret; + u8 mode, psen; + u16 reg; + + ret = hi8435_readb(priv, HI8435_PSEN_REG, &psen); + if (ret < 0) + return ret; + + /* Supply-Open or GND-Open sensing mode */ + mode = !!(psen & BIT(chan->channel / 8)); + + ret = hi8435_readw(priv, mode ? HI8435_SOCENHYS_REG : + HI8435_GOCENHYS_REG, ®); + if (ret < 0) + return ret; + + if (dir == IIO_EV_DIR_FALLING) { + /* falling threshold range 2..21V, hysteresis minimum 2V */ + if (val < 2 || val > 21 || (val + 2) > priv->threshold_hi[mode]) + return -EINVAL; + + if (val == priv->threshold_lo[mode]) + return 0; + + priv->threshold_lo[mode] = val; + + /* hysteresis must not be odd */ + if ((priv->threshold_hi[mode] - priv->threshold_lo[mode]) % 2) + priv->threshold_hi[mode]--; + } else if (dir == IIO_EV_DIR_RISING) { + /* rising threshold range 3..22V, hysteresis minimum 2V */ + if (val < 3 || val > 22 || val < (priv->threshold_lo[mode] + 2)) + return -EINVAL; + + if (val == priv->threshold_hi[mode]) + return 0; + + priv->threshold_hi[mode] = val; + + /* hysteresis must not be odd */ + if ((priv->threshold_hi[mode] - priv->threshold_lo[mode]) % 2) + priv->threshold_lo[mode]++; + } + + /* program thresholds */ + mutex_lock(&priv->lock); + + ret = hi8435_readw(priv, mode ? HI8435_SOCENHYS_REG : + HI8435_GOCENHYS_REG, ®); + if (ret < 0) { + mutex_unlock(&priv->lock); + return ret; + } + + /* hysteresis */ + reg = priv->threshold_hi[mode] - priv->threshold_lo[mode]; + reg <<= 8; + /* threshold center */ + reg |= (priv->threshold_hi[mode] + priv->threshold_lo[mode]); + + ret = hi8435_writew(priv, mode ? HI8435_SOCENHYS_REG : + HI8435_GOCENHYS_REG, reg); + + mutex_unlock(&priv->lock); + + return ret; +} + +static int hi8435_debugfs_reg_access(struct iio_dev *idev, + unsigned reg, unsigned writeval, + unsigned *readval) +{ + struct hi8435_priv *priv = iio_priv(idev); + int ret; + u8 val; + + if (readval != NULL) { + ret = hi8435_readb(priv, reg, &val); + *readval = val; + } else { + val = (u8)writeval; + ret = hi8435_writeb(priv, reg, val); + } + + return ret; +} + +static const struct iio_event_spec hi8435_events[] = { + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_RISING, + .mask_separate = BIT(IIO_EV_INFO_VALUE), + }, { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_FALLING, + .mask_separate = BIT(IIO_EV_INFO_VALUE), + }, { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_EITHER, + .mask_separate = BIT(IIO_EV_INFO_ENABLE), + }, +}; + +static int hi8435_get_sensing_mode(struct iio_dev *idev, + const struct iio_chan_spec *chan) +{ + struct hi8435_priv *priv = iio_priv(idev); + int ret; + u8 reg; + + ret = hi8435_readb(priv, HI8435_PSEN_REG, ®); + if (ret < 0) + return ret; + + return !!(reg & BIT(chan->channel / 8)); +} + +static int hi8435_set_sensing_mode(struct iio_dev *idev, + const struct iio_chan_spec *chan, + unsigned int mode) +{ + struct hi8435_priv *priv = iio_priv(idev); + int ret; + u8 reg; + + mutex_lock(&priv->lock); + + ret = hi8435_readb(priv, HI8435_PSEN_REG, ®); + if (ret < 0) { + mutex_unlock(&priv->lock); + return ret; + } + + reg &= ~BIT(chan->channel / 8); + if (mode) + reg |= BIT(chan->channel / 8); + + ret = hi8435_writeb(priv, HI8435_PSEN_REG, reg); + + mutex_unlock(&priv->lock); + + return ret; +} + +static const char * const hi8435_sensing_modes[] = { "GND-Open", + "Supply-Open" }; + +static const struct iio_enum hi8435_sensing_mode = { + .items = hi8435_sensing_modes, + .num_items = ARRAY_SIZE(hi8435_sensing_modes), + .get = hi8435_get_sensing_mode, + .set = hi8435_set_sensing_mode, +}; + +static const struct iio_chan_spec_ext_info hi8435_ext_info[] = { + IIO_ENUM("sensing_mode", IIO_SEPARATE, &hi8435_sensing_mode), + {}, +}; + +#define HI8435_VOLTAGE_CHANNEL(num) \ +{ \ + .type = IIO_VOLTAGE, \ + .indexed = 1, \ + .channel = num, \ + .event_spec = hi8435_events, \ + .num_event_specs = ARRAY_SIZE(hi8435_events), \ + .ext_info = hi8435_ext_info, \ +} + +static const struct iio_chan_spec hi8435_channels[] = { + HI8435_VOLTAGE_CHANNEL(0), + HI8435_VOLTAGE_CHANNEL(1), + HI8435_VOLTAGE_CHANNEL(2), + HI8435_VOLTAGE_CHANNEL(3), + HI8435_VOLTAGE_CHANNEL(4), + HI8435_VOLTAGE_CHANNEL(5), + HI8435_VOLTAGE_CHANNEL(6), + HI8435_VOLTAGE_CHANNEL(7), + HI8435_VOLTAGE_CHANNEL(8), + HI8435_VOLTAGE_CHANNEL(9), + HI8435_VOLTAGE_CHANNEL(10), + HI8435_VOLTAGE_CHANNEL(11), + HI8435_VOLTAGE_CHANNEL(12), + HI8435_VOLTAGE_CHANNEL(13), + HI8435_VOLTAGE_CHANNEL(14), + HI8435_VOLTAGE_CHANNEL(15), + HI8435_VOLTAGE_CHANNEL(16), + HI8435_VOLTAGE_CHANNEL(17), + HI8435_VOLTAGE_CHANNEL(18), + HI8435_VOLTAGE_CHANNEL(19), + HI8435_VOLTAGE_CHANNEL(20), + HI8435_VOLTAGE_CHANNEL(21), + HI8435_VOLTAGE_CHANNEL(22), + HI8435_VOLTAGE_CHANNEL(23), + HI8435_VOLTAGE_CHANNEL(24), + HI8435_VOLTAGE_CHANNEL(25), + HI8435_VOLTAGE_CHANNEL(26), + HI8435_VOLTAGE_CHANNEL(27), + HI8435_VOLTAGE_CHANNEL(28), + HI8435_VOLTAGE_CHANNEL(29), + HI8435_VOLTAGE_CHANNEL(30), + HI8435_VOLTAGE_CHANNEL(31), + IIO_CHAN_SOFT_TIMESTAMP(32), +}; + +static const struct iio_info hi8435_info = { + .driver_module = THIS_MODULE, + .read_event_config = &hi8435_read_event_config, + .write_event_config = hi8435_write_event_config, + .read_event_value = &hi8435_read_event_value, + .write_event_value = &hi8435_write_event_value, + .debugfs_reg_access = &hi8435_debugfs_reg_access, +}; + +static void hi8435_iio_push_event(struct iio_dev *idev, unsigned int val) +{ + struct hi8435_priv *priv = iio_priv(idev); + enum iio_event_direction dir; + unsigned int i; + unsigned int status = priv->event_prev_val ^ val; + + if (!status) + return; + + for_each_set_bit(i, &priv->event_scan_mask, 32) { + if (status & BIT(i)) { + dir = val & BIT(i) ? IIO_EV_DIR_RISING : + IIO_EV_DIR_FALLING; + iio_push_event(idev, + IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, i, + IIO_EV_TYPE_THRESH, dir), + iio_get_time_ns()); + } + } + + priv->event_prev_val = val; +} + +static irqreturn_t hi8435_trigger_handler(int irq, void *private) +{ + struct iio_poll_func *pf = private; + struct iio_dev *idev = pf->indio_dev; + struct hi8435_priv *priv = iio_priv(idev); + u32 val; + int ret; + + ret = hi8435_readl(priv, HI8435_SO31_0_REG, &val); + if (ret < 0) + goto err_read; + + hi8435_iio_push_event(idev, val); + +err_read: + iio_trigger_notify_done(idev->trig); + + return IRQ_HANDLED; +} + +static int hi8435_probe(struct spi_device *spi) +{ + struct iio_dev *idev; + struct hi8435_priv *priv; + struct gpio_desc *reset_gpio; + int ret; + + idev = devm_iio_device_alloc(&spi->dev, sizeof(*priv)); + if (!idev) + return -ENOMEM; + + priv = iio_priv(idev); + priv->spi = spi; + + reset_gpio = devm_gpiod_get(&spi->dev, NULL, GPIOD_OUT_LOW); + if (IS_ERR(reset_gpio)) { + /* chip s/w reset if h/w reset failed */ + hi8435_writeb(priv, HI8435_CTRL_REG, HI8435_CTRL_SRST); + hi8435_writeb(priv, HI8435_CTRL_REG, 0); + } else { + udelay(5); + gpiod_set_value(reset_gpio, 1); + } + + spi_set_drvdata(spi, idev); + mutex_init(&priv->lock); + + idev->dev.parent = &spi->dev; + idev->name = spi_get_device_id(spi)->name; + idev->modes = INDIO_DIRECT_MODE; + idev->info = &hi8435_info; + idev->channels = hi8435_channels; + idev->num_channels = ARRAY_SIZE(hi8435_channels); + + /* unmask all events */ + priv->event_scan_mask = ~(0); + /* + * There is a restriction in the chip - the hysteresis can not be odd. + * If the hysteresis is set to odd value then chip gets into lock state + * and not functional anymore. + * After chip reset the thresholds are in undefined state, so we need to + * initialize thresholds to some initial values and then prevent + * userspace setting odd hysteresis. + * + * Set threshold low voltage to 2V, threshold high voltage to 4V + * for both GND-Open and Supply-Open sensing modes. + */ + priv->threshold_lo[0] = priv->threshold_lo[1] = 2; + priv->threshold_hi[0] = priv->threshold_hi[1] = 4; + hi8435_writew(priv, HI8435_GOCENHYS_REG, 0x206); + hi8435_writew(priv, HI8435_SOCENHYS_REG, 0x206); + + ret = iio_triggered_event_setup(idev, NULL, hi8435_trigger_handler); + if (ret) + return ret; + + ret = iio_device_register(idev); + if (ret < 0) { + dev_err(&spi->dev, "unable to register device\n"); + goto unregister_triggered_event; + } + + return 0; + +unregister_triggered_event: + iio_triggered_event_cleanup(idev); + return ret; +} + +static int hi8435_remove(struct spi_device *spi) +{ + struct iio_dev *idev = spi_get_drvdata(spi); + + iio_device_unregister(idev); + iio_triggered_event_cleanup(idev); + + return 0; +} + +static const struct of_device_id hi8435_dt_ids[] = { + { .compatible = "holt,hi8435" }, + {}, +}; +MODULE_DEVICE_TABLE(of, hi8435_dt_ids); + +static const struct spi_device_id hi8435_id[] = { + { "hi8435", 0}, + { } +}; +MODULE_DEVICE_TABLE(spi, hi8435_id); + +static struct spi_driver hi8435_driver = { + .driver = { + .name = DRV_NAME, + .of_match_table = of_match_ptr(hi8435_dt_ids), + }, + .probe = hi8435_probe, + .remove = hi8435_remove, + .id_table = hi8435_id, +}; +module_spi_driver(hi8435_driver); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Vladimir Barinov"); +MODULE_DESCRIPTION("HI-8435 threshold detector"); diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c index 44bf815adb6c..41d495c6035e 100644 --- a/drivers/iio/adc/max1027.c +++ b/drivers/iio/adc/max1027.c @@ -508,7 +508,7 @@ static int max1027_remove(struct spi_device *spi) static struct spi_driver max1027_driver = { .driver = { .name = "max1027", - .owner = THIS_MODULE, + .of_match_table = of_match_ptr(max1027_adc_dt_ids), }, .probe = max1027_probe, .remove = max1027_remove, diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c index 1b3b74be5c20..929508e5266c 100644 --- a/drivers/iio/adc/max1363.c +++ b/drivers/iio/adc/max1363.c @@ -1007,7 +1007,6 @@ static struct attribute *max1363_event_attributes[] = { static struct attribute_group max1363_event_attribute_group = { .attrs = max1363_event_attributes, - .name = "events", }; static int max1363_update_scan_mode(struct iio_dev *indio_dev, diff --git a/drivers/iio/adc/mcp320x.c b/drivers/iio/adc/mcp320x.c index b19e4f9d16e0..8569c8e1f4b2 100644 --- a/drivers/iio/adc/mcp320x.c +++ b/drivers/iio/adc/mcp320x.c @@ -404,7 +404,7 @@ MODULE_DEVICE_TABLE(spi, mcp320x_id); static struct spi_driver mcp320x_driver = { .driver = { .name = "mcp320x", - .owner = THIS_MODULE, + .of_match_table = of_match_ptr(mcp320x_dt_ids), }, .probe = mcp320x_probe, .remove = mcp320x_remove, diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c index 915be6b60097..ff6f7f63c8d9 100644 --- a/drivers/iio/adc/ti-adc128s052.c +++ b/drivers/iio/adc/ti-adc128s052.c @@ -174,6 +174,13 @@ static int adc128_remove(struct spi_device *spi) return 0; } +static const struct of_device_id adc128_of_match[] = { + { .compatible = "ti,adc128s052", }, + { .compatible = "ti,adc122s021", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, adc128_of_match); + static const struct spi_device_id adc128_id[] = { { "adc128s052", 0}, /* index into adc128_config */ { "adc122s021", 1}, @@ -184,7 +191,7 @@ MODULE_DEVICE_TABLE(spi, adc128_id); static struct spi_driver adc128_driver = { .driver = { .name = "adc128s052", - .owner = THIS_MODULE, + .of_match_table = of_match_ptr(adc128_of_match), }, .probe = adc128_probe, .remove = adc128_remove, diff --git a/drivers/iio/adc/twl4030-madc.c b/drivers/iio/adc/twl4030-madc.c index ebe415f10640..0c74869a540a 100644 --- a/drivers/iio/adc/twl4030-madc.c +++ b/drivers/iio/adc/twl4030-madc.c @@ -45,13 +45,18 @@ #include <linux/types.h> #include <linux/gfp.h> #include <linux/err.h> +#include <linux/regulator/consumer.h> #include <linux/iio/iio.h> +#define TWL4030_USB_SEL_MADC_MCPC (1<<3) +#define TWL4030_USB_CARKIT_ANA_CTRL 0xBB + /** * struct twl4030_madc_data - a container for madc info * @dev: Pointer to device structure for madc * @lock: Mutex protecting this data structure + * @regulator: Pointer to bias regulator for madc * @requests: Array of request struct corresponding to SW1, SW2 and RT * @use_second_irq: IRQ selection (main or co-processor) * @imr: Interrupt mask register of MADC @@ -60,6 +65,7 @@ struct twl4030_madc_data { struct device *dev; struct mutex lock; /* mutex protecting this data structure */ + struct regulator *usb3v1; struct twl4030_madc_request requests[TWL4030_MADC_NUM_METHODS]; bool use_second_irq; u8 imr; @@ -841,6 +847,32 @@ static int twl4030_madc_probe(struct platform_device *pdev) } twl4030_madc = madc; + /* Configure MADC[3:6] */ + ret = twl_i2c_read_u8(TWL_MODULE_USB, ®val, + TWL4030_USB_CARKIT_ANA_CTRL); + if (ret) { + dev_err(&pdev->dev, "unable to read reg CARKIT_ANA_CTRL 0x%X\n", + TWL4030_USB_CARKIT_ANA_CTRL); + goto err_i2c; + } + regval |= TWL4030_USB_SEL_MADC_MCPC; + ret = twl_i2c_write_u8(TWL_MODULE_USB, regval, + TWL4030_USB_CARKIT_ANA_CTRL); + if (ret) { + dev_err(&pdev->dev, "unable to write reg CARKIT_ANA_CTRL 0x%X\n", + TWL4030_USB_CARKIT_ANA_CTRL); + goto err_i2c; + } + + /* Enable 3v1 bias regulator for MADC[3:6] */ + madc->usb3v1 = devm_regulator_get(madc->dev, "vusb3v1"); + if (IS_ERR(madc->usb3v1)) + return -ENODEV; + + ret = regulator_enable(madc->usb3v1); + if (ret) + dev_err(madc->dev, "could not enable 3v1 bias regulator\n"); + ret = iio_device_register(iio_dev); if (ret) { dev_err(&pdev->dev, "could not register iio device\n"); @@ -866,6 +898,8 @@ static int twl4030_madc_remove(struct platform_device *pdev) twl4030_madc_set_current_generator(madc, 0, 0); twl4030_madc_set_power(madc, 0); + regulator_disable(madc->usb3v1); + return 0; } diff --git a/drivers/iio/adc/twl6030-gpadc.c b/drivers/iio/adc/twl6030-gpadc.c index df12c57e6ce0..becbb0aef232 100644 --- a/drivers/iio/adc/twl6030-gpadc.c +++ b/drivers/iio/adc/twl6030-gpadc.c @@ -875,6 +875,7 @@ static const struct of_device_id of_twl6030_match_tbl[] = { }, { /* end */ } }; +MODULE_DEVICE_TABLE(of, of_twl6030_match_tbl); static int twl6030_gpadc_probe(struct platform_device *pdev) { diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c index 6bf4c20eb231..599cde3d03a1 100644 --- a/drivers/iio/adc/vf610_adc.c +++ b/drivers/iio/adc/vf610_adc.c @@ -34,8 +34,11 @@ #include <linux/err.h> #include <linux/iio/iio.h> +#include <linux/iio/buffer.h> #include <linux/iio/sysfs.h> -#include <linux/iio/driver.h> +#include <linux/iio/trigger.h> +#include <linux/iio/trigger_consumer.h> +#include <linux/iio/triggered_buffer.h> /* This will be the driver name the kernel reports */ #define DRIVER_NAME "vf610-adc" @@ -170,6 +173,7 @@ struct vf610_adc { u32 sample_freq_avail[5]; struct completion completion; + u16 buffer[8]; }; static const u32 vf610_hw_avgs[] = { 1, 4, 8, 16, 32 }; @@ -505,12 +509,24 @@ static const struct iio_chan_spec_ext_info vf610_ext_info[] = { .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ BIT(IIO_CHAN_INFO_SAMP_FREQ), \ .ext_info = vf610_ext_info, \ + .scan_index = (_idx), \ + .scan_type = { \ + .sign = 'u', \ + .realbits = 12, \ + .storagebits = 16, \ + }, \ } #define VF610_ADC_TEMPERATURE_CHAN(_idx, _chan_type) { \ .type = (_chan_type), \ .channel = (_idx), \ .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), \ + .scan_index = (_idx), \ + .scan_type = { \ + .sign = 'u', \ + .realbits = 12, \ + .storagebits = 16, \ + }, \ } static const struct iio_chan_spec vf610_adc_iio_channels[] = { @@ -531,6 +547,7 @@ static const struct iio_chan_spec vf610_adc_iio_channels[] = { VF610_ADC_CHAN(14, IIO_VOLTAGE), VF610_ADC_CHAN(15, IIO_VOLTAGE), VF610_ADC_TEMPERATURE_CHAN(26, IIO_TEMP), + IIO_CHAN_SOFT_TIMESTAMP(32), /* sentinel */ }; @@ -559,13 +576,20 @@ static int vf610_adc_read_data(struct vf610_adc *info) static irqreturn_t vf610_adc_isr(int irq, void *dev_id) { - struct vf610_adc *info = (struct vf610_adc *)dev_id; + struct iio_dev *indio_dev = (struct iio_dev *)dev_id; + struct vf610_adc *info = iio_priv(indio_dev); int coco; coco = readl(info->regs + VF610_REG_ADC_HS); if (coco & VF610_ADC_HS_COCO0) { info->value = vf610_adc_read_data(info); - complete(&info->completion); + if (iio_buffer_enabled(indio_dev)) { + info->buffer[0] = info->value; + iio_push_to_buffers_with_timestamp(indio_dev, + info->buffer, iio_get_time_ns()); + iio_trigger_notify_done(indio_dev->trig); + } else + complete(&info->completion); } return IRQ_HANDLED; @@ -613,8 +637,12 @@ static int vf610_read_raw(struct iio_dev *indio_dev, case IIO_CHAN_INFO_RAW: case IIO_CHAN_INFO_PROCESSED: mutex_lock(&indio_dev->mlock); - reinit_completion(&info->completion); + if (iio_buffer_enabled(indio_dev)) { + mutex_unlock(&indio_dev->mlock); + return -EBUSY; + } + reinit_completion(&info->completion); hc_cfg = VF610_ADC_ADCHC(chan->channel); hc_cfg |= VF610_ADC_AIEN; writel(hc_cfg, info->regs + VF610_REG_ADC_HC0); @@ -694,6 +722,56 @@ static int vf610_write_raw(struct iio_dev *indio_dev, return -EINVAL; } +static int vf610_adc_buffer_postenable(struct iio_dev *indio_dev) +{ + struct vf610_adc *info = iio_priv(indio_dev); + unsigned int channel; + int ret; + int val; + + ret = iio_triggered_buffer_postenable(indio_dev); + if (ret) + return ret; + + val = readl(info->regs + VF610_REG_ADC_GC); + val |= VF610_ADC_ADCON; + writel(val, info->regs + VF610_REG_ADC_GC); + + channel = find_first_bit(indio_dev->active_scan_mask, + indio_dev->masklength); + + val = VF610_ADC_ADCHC(channel); + val |= VF610_ADC_AIEN; + + writel(val, info->regs + VF610_REG_ADC_HC0); + + return 0; +} + +static int vf610_adc_buffer_predisable(struct iio_dev *indio_dev) +{ + struct vf610_adc *info = iio_priv(indio_dev); + unsigned int hc_cfg = 0; + int val; + + val = readl(info->regs + VF610_REG_ADC_GC); + val &= ~VF610_ADC_ADCON; + writel(val, info->regs + VF610_REG_ADC_GC); + + hc_cfg |= VF610_ADC_CONV_DISABLE; + hc_cfg &= ~VF610_ADC_AIEN; + + writel(hc_cfg, info->regs + VF610_REG_ADC_HC0); + + return iio_triggered_buffer_predisable(indio_dev); +} + +static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = { + .postenable = &vf610_adc_buffer_postenable, + .predisable = &vf610_adc_buffer_predisable, + .validate_scan_mask = &iio_validate_scan_mask_onehot, +}; + static int vf610_adc_reg_access(struct iio_dev *indio_dev, unsigned reg, unsigned writeval, unsigned *readval) @@ -753,7 +831,7 @@ static int vf610_adc_probe(struct platform_device *pdev) ret = devm_request_irq(info->dev, irq, vf610_adc_isr, 0, - dev_name(&pdev->dev), info); + dev_name(&pdev->dev), indio_dev); if (ret < 0) { dev_err(&pdev->dev, "failed requesting irq, irq = %d\n", irq); return ret; @@ -806,15 +884,23 @@ static int vf610_adc_probe(struct platform_device *pdev) vf610_adc_cfg_init(info); vf610_adc_hw_init(info); + ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time, + NULL, &iio_triggered_buffer_setup_ops); + if (ret < 0) { + dev_err(&pdev->dev, "Couldn't initialise the buffer\n"); + goto error_iio_device_register; + } + ret = iio_device_register(indio_dev); if (ret) { dev_err(&pdev->dev, "Couldn't register the device.\n"); - goto error_iio_device_register; + goto error_adc_buffer_init; } return 0; - +error_adc_buffer_init: + iio_triggered_buffer_cleanup(indio_dev); error_iio_device_register: clk_disable_unprepare(info->clk); error_adc_clk_enable: @@ -829,6 +915,7 @@ static int vf610_adc_remove(struct platform_device *pdev) struct vf610_adc *info = iio_priv(indio_dev); iio_device_unregister(indio_dev); + iio_triggered_buffer_cleanup(indio_dev); regulator_disable(info->vref); clk_disable_unprepare(info->clk); diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c index ce93bd8e3f68..0370624a35db 100644 --- a/drivers/iio/adc/xilinx-xadc-core.c +++ b/drivers/iio/adc/xilinx-xadc-core.c @@ -273,33 +273,13 @@ static void xadc_zynq_unmask_worker(struct work_struct *work) schedule_delayed_work(&xadc->zynq_unmask_work, msecs_to_jiffies(XADC_ZYNQ_UNMASK_TIMEOUT)); } -} - -static irqreturn_t xadc_zynq_threaded_interrupt_handler(int irq, void *devid) -{ - struct iio_dev *indio_dev = devid; - struct xadc *xadc = iio_priv(indio_dev); - unsigned int alarm; - - spin_lock_irq(&xadc->lock); - alarm = xadc->zynq_alarm; - xadc->zynq_alarm = 0; - spin_unlock_irq(&xadc->lock); - - xadc_handle_events(indio_dev, xadc_zynq_transform_alarm(alarm)); - /* unmask the required interrupts in timer. */ - schedule_delayed_work(&xadc->zynq_unmask_work, - msecs_to_jiffies(XADC_ZYNQ_UNMASK_TIMEOUT)); - - return IRQ_HANDLED; } static irqreturn_t xadc_zynq_interrupt_handler(int irq, void *devid) { struct iio_dev *indio_dev = devid; struct xadc *xadc = iio_priv(indio_dev); - irqreturn_t ret = IRQ_HANDLED; uint32_t status; xadc_read_reg(xadc, XADC_ZYNQ_REG_INTSTS, &status); @@ -321,18 +301,23 @@ static irqreturn_t xadc_zynq_interrupt_handler(int irq, void *devid) status &= XADC_ZYNQ_INT_ALARM_MASK; if (status) { - xadc->zynq_alarm |= status; xadc->zynq_masked_alarm |= status; /* * mask the current event interrupt, * unmask it when the interrupt is no more active. */ xadc_zynq_update_intmsk(xadc, 0, 0); - ret = IRQ_WAKE_THREAD; + + xadc_handle_events(indio_dev, + xadc_zynq_transform_alarm(status)); + + /* unmask the required interrupts in timer. */ + schedule_delayed_work(&xadc->zynq_unmask_work, + msecs_to_jiffies(XADC_ZYNQ_UNMASK_TIMEOUT)); } spin_unlock(&xadc->lock); - return ret; + return IRQ_HANDLED; } #define XADC_ZYNQ_TCK_RATE_MAX 50000000 @@ -437,7 +422,6 @@ static const struct xadc_ops xadc_zynq_ops = { .setup = xadc_zynq_setup, .get_dclk_rate = xadc_zynq_get_dclk_rate, .interrupt_handler = xadc_zynq_interrupt_handler, - .threaded_interrupt_handler = xadc_zynq_threaded_interrupt_handler, .update_alarm = xadc_zynq_update_alarm, }; @@ -1225,9 +1209,8 @@ static int xadc_probe(struct platform_device *pdev) if (ret) goto err_free_samplerate_trigger; - ret = request_threaded_irq(irq, xadc->ops->interrupt_handler, - xadc->ops->threaded_interrupt_handler, - 0, dev_name(&pdev->dev), indio_dev); + ret = request_irq(irq, xadc->ops->interrupt_handler, 0, + dev_name(&pdev->dev), indio_dev); if (ret) goto err_clk_disable_unprepare; diff --git a/drivers/iio/adc/xilinx-xadc.h b/drivers/iio/adc/xilinx-xadc.h index 54adc5087210..f6f081965647 100644 --- a/drivers/iio/adc/xilinx-xadc.h +++ b/drivers/iio/adc/xilinx-xadc.h @@ -60,7 +60,6 @@ struct xadc { enum xadc_external_mux_mode external_mux_mode; - unsigned int zynq_alarm; unsigned int zynq_masked_alarm; unsigned int zynq_intmask; struct delayed_work zynq_unmask_work; @@ -79,7 +78,6 @@ struct xadc_ops { void (*update_alarm)(struct xadc *, unsigned int); unsigned long (*get_dclk_rate)(struct xadc *); irqreturn_t (*interrupt_handler)(int, void *); - irqreturn_t (*threaded_interrupt_handler)(int, void *); unsigned int flags; }; diff --git a/drivers/iio/amplifiers/ad8366.c b/drivers/iio/amplifiers/ad8366.c index c0d364ebaea8..102c7174da5b 100644 --- a/drivers/iio/amplifiers/ad8366.c +++ b/drivers/iio/amplifiers/ad8366.c @@ -195,11 +195,11 @@ static const struct spi_device_id ad8366_id[] = { {"ad8366", 0}, {} }; +MODULE_DEVICE_TABLE(spi, ad8366_id); static struct spi_driver ad8366_driver = { .driver = { .name = KBUILD_MODNAME, - .owner = THIS_MODULE, }, .probe = ad8366_probe, .remove = ad8366_remove, diff --git a/drivers/iio/buffer/Kconfig b/drivers/iio/buffer/Kconfig new file mode 100644 index 000000000000..0a7b2fd3699b --- /dev/null +++ b/drivers/iio/buffer/Kconfig @@ -0,0 +1,24 @@ +# +# Industrial I/O generic buffer implementations +# +# When adding new entries keep the list in alphabetical order + +config IIO_BUFFER_CB + tristate "IIO callback buffer used for push in-kernel interfaces" + help + Should be selected by any drivers that do in-kernel push + usage. That is, those where the data is pushed to the consumer. + +config IIO_KFIFO_BUF + tristate "Industrial I/O buffering based on kfifo" + help + A simple fifo based on kfifo. Note that this currently provides + no buffer events so it is up to userspace to work out how + often to read from the buffer. + +config IIO_TRIGGERED_BUFFER + tristate + select IIO_TRIGGER + select IIO_KFIFO_BUF + help + Provides helper functions for setting up triggered buffers. diff --git a/drivers/iio/buffer/Makefile b/drivers/iio/buffer/Makefile new file mode 100644 index 000000000000..4d193b9a9123 --- /dev/null +++ b/drivers/iio/buffer/Makefile @@ -0,0 +1,8 @@ +# +# Makefile for the industrial I/O buffer implementations +# + +# When adding new entries keep the list in alphabetical order +obj-$(CONFIG_IIO_BUFFER_CB) += industrialio-buffer-cb.o +obj-$(CONFIG_IIO_TRIGGERED_BUFFER) += industrialio-triggered-buffer.o +obj-$(CONFIG_IIO_KFIFO_BUF) += kfifo_buf.o diff --git a/drivers/iio/buffer_cb.c b/drivers/iio/buffer/industrialio-buffer-cb.c index 1648e6e5a848..323079c3ccce 100644 --- a/drivers/iio/buffer_cb.c +++ b/drivers/iio/buffer/industrialio-buffer-cb.c @@ -1,4 +1,12 @@ +/* The industrial I/O callback buffer + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + #include <linux/kernel.h> +#include <linux/module.h> #include <linux/slab.h> #include <linux/err.h> #include <linux/export.h> @@ -124,3 +132,7 @@ struct iio_channel return cb_buffer->channels; } EXPORT_SYMBOL_GPL(iio_channel_cb_get_channels); + +MODULE_AUTHOR("Jonathan Cameron <jic23@kernel.org>"); +MODULE_DESCRIPTION("Industrial I/O callback buffer"); +MODULE_LICENSE("GPL"); diff --git a/drivers/iio/industrialio-triggered-buffer.c b/drivers/iio/buffer/industrialio-triggered-buffer.c index 4b2858ba1fd6..4b2858ba1fd6 100644 --- a/drivers/iio/industrialio-triggered-buffer.c +++ b/drivers/iio/buffer/industrialio-triggered-buffer.c diff --git a/drivers/iio/kfifo_buf.c b/drivers/iio/buffer/kfifo_buf.c index c5b999f0c519..c5b999f0c519 100644 --- a/drivers/iio/kfifo_buf.c +++ b/drivers/iio/buffer/kfifo_buf.c diff --git a/drivers/iio/chemical/Kconfig b/drivers/iio/chemical/Kconfig new file mode 100644 index 000000000000..3061b7299f0f --- /dev/null +++ b/drivers/iio/chemical/Kconfig @@ -0,0 +1,15 @@ +# +# Chemical sensors +# + +menu "Chemical Sensors" + +config VZ89X + tristate "SGX Sensortech MiCS VZ89X VOC sensor" + depends on I2C + help + Say Y here to build I2C interface support for the SGX + Sensortech MiCS VZ89X VOC (Volatile Organic Compounds) + sensors + +endmenu diff --git a/drivers/iio/chemical/Makefile b/drivers/iio/chemical/Makefile new file mode 100644 index 000000000000..7292f2ded587 --- /dev/null +++ b/drivers/iio/chemical/Makefile @@ -0,0 +1,6 @@ +# +# Makefile for IIO chemical sensors +# + +# When adding new entries keep the list in alphabetical order +obj-$(CONFIG_VZ89X) += vz89x.o diff --git a/drivers/iio/chemical/vz89x.c b/drivers/iio/chemical/vz89x.c new file mode 100644 index 000000000000..11e59a5a5112 --- /dev/null +++ b/drivers/iio/chemical/vz89x.c @@ -0,0 +1,256 @@ +/* + * vz89x.c - Support for SGX Sensortech MiCS VZ89X VOC sensors + * + * Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/init.h> +#include <linux/i2c.h> + +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> + +#define VZ89X_REG_MEASUREMENT 0x09 +#define VZ89X_REG_MEASUREMENT_SIZE 6 + +#define VZ89X_VOC_CO2_IDX 0 +#define VZ89X_VOC_SHORT_IDX 1 +#define VZ89X_VOC_TVOC_IDX 2 +#define VZ89X_VOC_RESISTANCE_IDX 3 + +struct vz89x_data { + struct i2c_client *client; + struct mutex lock; + unsigned long last_update; + + u8 buffer[VZ89X_REG_MEASUREMENT_SIZE]; +}; + +static const struct iio_chan_spec vz89x_channels[] = { + { + .type = IIO_CONCENTRATION, + .channel2 = IIO_MOD_CO2, + .modified = 1, + .info_mask_separate = + BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_RAW), + .address = VZ89X_VOC_CO2_IDX, + }, + { + .type = IIO_CONCENTRATION, + .channel2 = IIO_MOD_VOC, + .modified = 1, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .address = VZ89X_VOC_SHORT_IDX, + .extend_name = "short", + }, + { + .type = IIO_CONCENTRATION, + .channel2 = IIO_MOD_VOC, + .modified = 1, + .info_mask_separate = + BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_RAW), + .address = VZ89X_VOC_TVOC_IDX, + }, + { + .type = IIO_RESISTANCE, + .info_mask_separate = + BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), + .address = VZ89X_VOC_RESISTANCE_IDX, + }, +}; + +static IIO_CONST_ATTR(in_concentration_co2_scale, "0.00000698689"); +static IIO_CONST_ATTR(in_concentration_voc_scale, "0.00000000436681223"); + +static struct attribute *vz89x_attributes[] = { + &iio_const_attr_in_concentration_co2_scale.dev_attr.attr, + &iio_const_attr_in_concentration_voc_scale.dev_attr.attr, + NULL, +}; + +static const struct attribute_group vz89x_attrs_group = { + .attrs = vz89x_attributes, +}; + +/* + * Chipset sometime updates in the middle of a reading causing it to reset the + * data pointer, and causing invalid reading of previous data. + * We can check for this by reading MSB of the resistance reading that is + * always zero, and by also confirming the VOC_short isn't zero. + */ + +static int vz89x_measurement_is_valid(struct vz89x_data *data) +{ + if (data->buffer[VZ89X_VOC_SHORT_IDX] == 0) + return 1; + + return !!(data->buffer[VZ89X_REG_MEASUREMENT_SIZE - 1] > 0); +} + +static int vz89x_get_measurement(struct vz89x_data *data) +{ + int ret; + int i; + + /* sensor can only be polled once a second max per datasheet */ + if (!time_after(jiffies, data->last_update + HZ)) + return 0; + + ret = i2c_smbus_write_word_data(data->client, + VZ89X_REG_MEASUREMENT, 0); + if (ret < 0) + return ret; + + for (i = 0; i < VZ89X_REG_MEASUREMENT_SIZE; i++) { + ret = i2c_smbus_read_byte(data->client); + if (ret < 0) + return ret; + data->buffer[i] = ret; + } + + ret = vz89x_measurement_is_valid(data); + if (ret) + return -EAGAIN; + + data->last_update = jiffies; + + return 0; +} + +static int vz89x_get_resistance_reading(struct vz89x_data *data) +{ + u8 *buf = &data->buffer[VZ89X_VOC_RESISTANCE_IDX]; + + return buf[0] | (buf[1] << 8); +} + +static int vz89x_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + struct vz89x_data *data = iio_priv(indio_dev); + int ret = -EINVAL; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + mutex_lock(&data->lock); + ret = vz89x_get_measurement(data); + mutex_unlock(&data->lock); + + if (ret) + return ret; + + switch (chan->address) { + case VZ89X_VOC_CO2_IDX: + case VZ89X_VOC_SHORT_IDX: + case VZ89X_VOC_TVOC_IDX: + *val = data->buffer[chan->address]; + return IIO_VAL_INT; + case VZ89X_VOC_RESISTANCE_IDX: + *val = vz89x_get_resistance_reading(data); + return IIO_VAL_INT; + default: + return -EINVAL; + } + break; + case IIO_CHAN_INFO_SCALE: + switch (chan->type) { + case IIO_RESISTANCE: + *val = 10; + return IIO_VAL_INT; + default: + return -EINVAL; + } + break; + case IIO_CHAN_INFO_OFFSET: + switch (chan->address) { + case VZ89X_VOC_CO2_IDX: + *val = 44; + *val2 = 250000; + return IIO_VAL_INT_PLUS_MICRO; + case VZ89X_VOC_TVOC_IDX: + *val = -13; + return IIO_VAL_INT; + default: + return -EINVAL; + } + } + + return ret; +} + +static const struct iio_info vz89x_info = { + .attrs = &vz89x_attrs_group, + .read_raw = vz89x_read_raw, + .driver_module = THIS_MODULE, +}; + +static int vz89x_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct iio_dev *indio_dev; + struct vz89x_data *data; + + if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA | + I2C_FUNC_SMBUS_BYTE)) + return -ENODEV; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + data = iio_priv(indio_dev); + i2c_set_clientdata(client, indio_dev); + data->client = client; + data->last_update = jiffies - HZ; + mutex_init(&data->lock); + + indio_dev->dev.parent = &client->dev; + indio_dev->info = &vz89x_info, + indio_dev->name = dev_name(&client->dev); + indio_dev->modes = INDIO_DIRECT_MODE; + + indio_dev->channels = vz89x_channels; + indio_dev->num_channels = ARRAY_SIZE(vz89x_channels); + + return devm_iio_device_register(&client->dev, indio_dev); +} + +static const struct i2c_device_id vz89x_id[] = { + { "vz89x", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, vz89x_id); + +static const struct of_device_id vz89x_dt_ids[] = { + { .compatible = "sgx,vz89x" }, + { } +}; +MODULE_DEVICE_TABLE(of, vz89x_dt_ids); + +static struct i2c_driver vz89x_driver = { + .driver = { + .name = "vz89x", + .of_match_table = of_match_ptr(vz89x_dt_ids), + }, + .probe = vz89x_probe, + .id_table = vz89x_id, +}; +module_i2c_driver(vz89x_driver); + +MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>"); +MODULE_DESCRIPTION("SGX Sensortech MiCS VZ89X VOC sensors"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/common/Kconfig b/drivers/iio/common/Kconfig index 790f106d719c..26a6026de614 100644 --- a/drivers/iio/common/Kconfig +++ b/drivers/iio/common/Kconfig @@ -3,5 +3,6 @@ # source "drivers/iio/common/hid-sensors/Kconfig" +source "drivers/iio/common/ms_sensors/Kconfig" source "drivers/iio/common/ssp_sensors/Kconfig" source "drivers/iio/common/st_sensors/Kconfig" diff --git a/drivers/iio/common/Makefile b/drivers/iio/common/Makefile index b1e4d9c9591c..585da6a1b188 100644 --- a/drivers/iio/common/Makefile +++ b/drivers/iio/common/Makefile @@ -8,5 +8,6 @@ # When adding new entries keep the list in alphabetical order obj-y += hid-sensors/ +obj-y += ms_sensors/ obj-y += ssp_sensors/ obj-y += st_sensors/ diff --git a/drivers/iio/common/ms_sensors/Kconfig b/drivers/iio/common/ms_sensors/Kconfig new file mode 100644 index 000000000000..b28a92b97cf9 --- /dev/null +++ b/drivers/iio/common/ms_sensors/Kconfig @@ -0,0 +1,6 @@ +# +# Measurements Specialties sensors common library +# + +config IIO_MS_SENSORS_I2C + tristate diff --git a/drivers/iio/common/ms_sensors/Makefile b/drivers/iio/common/ms_sensors/Makefile new file mode 100644 index 000000000000..7846428abe06 --- /dev/null +++ b/drivers/iio/common/ms_sensors/Makefile @@ -0,0 +1,5 @@ +# +# Makefile for the Measurement Specialties sensor common modules. +# + +obj-$(CONFIG_IIO_MS_SENSORS_I2C) += ms_sensors_i2c.o diff --git a/drivers/iio/common/ms_sensors/ms_sensors_i2c.c b/drivers/iio/common/ms_sensors/ms_sensors_i2c.c new file mode 100644 index 000000000000..669dc7c270f5 --- /dev/null +++ b/drivers/iio/common/ms_sensors/ms_sensors_i2c.c @@ -0,0 +1,652 @@ +/* + * Measurements Specialties driver common i2c functions + * + * Copyright (c) 2015 Measurement-Specialties + * + * Licensed under the GPL-2. + */ + +#include <linux/module.h> +#include <linux/iio/iio.h> +#include <linux/device.h> +#include <linux/delay.h> + +#include "ms_sensors_i2c.h" + +/* Conversion times in us */ +static const u16 ms_sensors_ht_t_conversion_time[] = { 50000, 25000, + 13000, 7000 }; +static const u16 ms_sensors_ht_h_conversion_time[] = { 16000, 3000, + 5000, 8000 }; +static const u16 ms_sensors_tp_conversion_time[] = { 500, 1100, 2100, + 4100, 8220, 16440 }; + +#define MS_SENSORS_SERIAL_READ_MSB 0xFA0F +#define MS_SENSORS_SERIAL_READ_LSB 0xFCC9 +#define MS_SENSORS_CONFIG_REG_WRITE 0xE6 +#define MS_SENSORS_CONFIG_REG_READ 0xE7 +#define MS_SENSORS_HT_T_CONVERSION_START 0xF3 +#define MS_SENSORS_HT_H_CONVERSION_START 0xF5 + +#define MS_SENSORS_TP_PROM_READ 0xA0 +#define MS_SENSORS_TP_T_CONVERSION_START 0x50 +#define MS_SENSORS_TP_P_CONVERSION_START 0x40 +#define MS_SENSORS_TP_ADC_READ 0x00 + +#define MS_SENSORS_NO_READ_CMD 0xFF + +/** + * ms_sensors_reset() - Reset function + * @cli: pointer to device client + * @cmd: reset cmd. Depends on device in use + * @delay: usleep minimal delay after reset command is issued + * + * Generic I2C reset function for Measurement Specialties devices. + * + * Return: 0 on success, negative errno otherwise. + */ +int ms_sensors_reset(void *cli, u8 cmd, unsigned int delay) +{ + int ret; + struct i2c_client *client = cli; + + ret = i2c_smbus_write_byte(client, cmd); + if (ret) { + dev_err(&client->dev, "Failed to reset device\n"); + return ret; + } + usleep_range(delay, delay + 1000); + + return 0; +} +EXPORT_SYMBOL(ms_sensors_reset); + +/** + * ms_sensors_read_prom_word() - PROM word read function + * @cli: pointer to device client + * @cmd: PROM read cmd. Depends on device and prom id + * @word: pointer to word destination value + * + * Generic i2c prom word read function for Measurement Specialties devices. + * + * Return: 0 on success, negative errno otherwise. + */ +int ms_sensors_read_prom_word(void *cli, int cmd, u16 *word) +{ + int ret; + struct i2c_client *client = (struct i2c_client *)cli; + + ret = i2c_smbus_read_word_swapped(client, cmd); + if (ret < 0) { + dev_err(&client->dev, "Failed to read prom word\n"); + return ret; + } + *word = ret; + + return 0; +} +EXPORT_SYMBOL(ms_sensors_read_prom_word); + +/** + * ms_sensors_convert_and_read() - ADC conversion & read function + * @cli: pointer to device client + * @conv: ADC conversion command. Depends on device in use + * @rd: ADC read command. Depends on device in use + * @delay: usleep minimal delay after conversion command is issued + * @adc: pointer to ADC destination value + * + * Generic ADC conversion & read function for Measurement Specialties + * devices. + * The function will issue conversion command, sleep appopriate delay, and + * issue command to read ADC. + * + * Return: 0 on success, negative errno otherwise. + */ +int ms_sensors_convert_and_read(void *cli, u8 conv, u8 rd, + unsigned int delay, u32 *adc) +{ + int ret; + __be32 buf = 0; + struct i2c_client *client = (struct i2c_client *)cli; + + /* Trigger conversion */ + ret = i2c_smbus_write_byte(client, conv); + if (ret) + goto err; + usleep_range(delay, delay + 1000); + + /* Retrieve ADC value */ + if (rd != MS_SENSORS_NO_READ_CMD) + ret = i2c_smbus_read_i2c_block_data(client, rd, 3, (u8 *)&buf); + else + ret = i2c_master_recv(client, (u8 *)&buf, 3); + if (ret < 0) + goto err; + + dev_dbg(&client->dev, "ADC raw value : %x\n", be32_to_cpu(buf) >> 8); + *adc = be32_to_cpu(buf) >> 8; + + return 0; +err: + dev_err(&client->dev, "Unable to make sensor adc conversion\n"); + return ret; +} +EXPORT_SYMBOL(ms_sensors_convert_and_read); + +/** + * ms_sensors_crc_valid() - CRC check function + * @value: input and CRC compare value + * + * Cyclic Redundancy Check function used in TSYS02D, HTU21, MS8607. + * This function performs a x^8 + x^5 + x^4 + 1 polynomial CRC. + * The argument contains CRC value in LSB byte while the bytes 1 and 2 + * are used for CRC computation. + * + * Return: 1 if CRC is valid, 0 otherwise. + */ +static bool ms_sensors_crc_valid(u32 value) +{ + u32 polynom = 0x988000; /* x^8 + x^5 + x^4 + 1 */ + u32 msb = 0x800000; + u32 mask = 0xFF8000; + u32 result = value & 0xFFFF00; + u8 crc = value & 0xFF; + + while (msb != 0x80) { + if (result & msb) + result = ((result ^ polynom) & mask) + | (result & ~mask); + msb >>= 1; + mask >>= 1; + polynom >>= 1; + } + + return result == crc; +} + +/** + * ms_sensors_read_serial() - Serial number read function + * @cli: pointer to i2c client + * @sn: pointer to 64-bits destination value + * + * Generic i2c serial number read function for Measurement Specialties devices. + * This function is used for TSYS02d, HTU21, MS8607 chipset. + * Refer to datasheet: + * http://www.meas-spec.com/downloads/HTU2X_Serial_Number_Reading.pdf + * + * Sensor raw MSB serial number format is the following : + * [ SNB3, CRC, SNB2, CRC, SNB1, CRC, SNB0, CRC] + * Sensor raw LSB serial number format is the following : + * [ X, X, SNC1, SNC0, CRC, SNA1, SNA0, CRC] + * The resulting serial number is following : + * [ SNA1, SNA0, SNB3, SNB2, SNB1, SNB0, SNC1, SNC0] + * + * Return: 0 on success, negative errno otherwise. + */ +int ms_sensors_read_serial(struct i2c_client *client, u64 *sn) +{ + u8 i; + __be64 rcv_buf = 0; + u64 rcv_val; + __be16 send_buf; + int ret; + + struct i2c_msg msg[2] = { + { + .addr = client->addr, + .flags = client->flags, + .len = 2, + .buf = (__u8 *)&send_buf, + }, + { + .addr = client->addr, + .flags = client->flags | I2C_M_RD, + .buf = (__u8 *)&rcv_buf, + }, + }; + + /* Read MSB part of serial number */ + send_buf = cpu_to_be16(MS_SENSORS_SERIAL_READ_MSB); + msg[1].len = 8; + ret = i2c_transfer(client->adapter, msg, 2); + if (ret < 0) { + dev_err(&client->dev, "Unable to read device serial number"); + return ret; + } + + rcv_val = be64_to_cpu(rcv_buf); + dev_dbg(&client->dev, "Serial MSB raw : %llx\n", rcv_val); + + for (i = 0; i < 64; i += 16) { + if (!ms_sensors_crc_valid((rcv_val >> i) & 0xFFFF)) + return -ENODEV; + } + + *sn = (((rcv_val >> 32) & 0xFF000000) | + ((rcv_val >> 24) & 0x00FF0000) | + ((rcv_val >> 16) & 0x0000FF00) | + ((rcv_val >> 8) & 0x000000FF)) << 16; + + /* Read LSB part of serial number */ + send_buf = cpu_to_be16(MS_SENSORS_SERIAL_READ_LSB); + msg[1].len = 6; + rcv_buf = 0; + ret = i2c_transfer(client->adapter, msg, 2); + if (ret < 0) { + dev_err(&client->dev, "Unable to read device serial number"); + return ret; + } + + rcv_val = be64_to_cpu(rcv_buf) >> 16; + dev_dbg(&client->dev, "Serial MSB raw : %llx\n", rcv_val); + + for (i = 0; i < 48; i += 24) { + if (!ms_sensors_crc_valid((rcv_val >> i) & 0xFFFFFF)) + return -ENODEV; + } + + *sn |= (rcv_val & 0xFFFF00) << 40 | (rcv_val >> 32); + + return 0; +} +EXPORT_SYMBOL(ms_sensors_read_serial); + +static int ms_sensors_read_config_reg(struct i2c_client *client, + u8 *config_reg) +{ + int ret; + + ret = i2c_smbus_write_byte(client, MS_SENSORS_CONFIG_REG_READ); + if (ret) { + dev_err(&client->dev, "Unable to read config register"); + return ret; + } + + ret = i2c_master_recv(client, config_reg, 1); + if (ret < 0) { + dev_err(&client->dev, "Unable to read config register"); + return ret; + } + dev_dbg(&client->dev, "Config register :%x\n", *config_reg); + + return 0; +} + +/** + * ms_sensors_write_resolution() - Set resolution function + * @dev_data: pointer to temperature/humidity device data + * @i: resolution index to set + * + * This function will program the appropriate resolution based on the index + * provided when user space will set samp_freq channel. + * This function is used for TSYS02D, HTU21 and MS8607 chipsets. + * + * Return: 0 on success, negative errno otherwise. + */ +ssize_t ms_sensors_write_resolution(struct ms_ht_dev *dev_data, + u8 i) +{ + u8 config_reg; + int ret; + + ret = ms_sensors_read_config_reg(dev_data->client, &config_reg); + if (ret) + return ret; + + config_reg &= 0x7E; + config_reg |= ((i & 1) << 7) + ((i & 2) >> 1); + + return i2c_smbus_write_byte_data(dev_data->client, + MS_SENSORS_CONFIG_REG_WRITE, + config_reg); +} +EXPORT_SYMBOL(ms_sensors_write_resolution); + +/** + * ms_sensors_show_battery_low() - Show device battery low indicator + * @dev_data: pointer to temperature/humidity device data + * @buf: pointer to char buffer to write result + * + * This function will read battery indicator value in the device and + * return 1 if the device voltage is below 2.25V. + * This function is used for TSYS02D, HTU21 and MS8607 chipsets. + * + * Return: length of sprintf on success, negative errno otherwise. + */ +ssize_t ms_sensors_show_battery_low(struct ms_ht_dev *dev_data, + char *buf) +{ + int ret; + u8 config_reg; + + mutex_lock(&dev_data->lock); + ret = ms_sensors_read_config_reg(dev_data->client, &config_reg); + mutex_unlock(&dev_data->lock); + if (ret) + return ret; + + return sprintf(buf, "%d\n", (config_reg & 0x40) >> 6); +} +EXPORT_SYMBOL(ms_sensors_show_battery_low); + +/** + * ms_sensors_show_heater() - Show device heater + * @dev_data: pointer to temperature/humidity device data + * @buf: pointer to char buffer to write result + * + * This function will read heater enable value in the device and + * return 1 if the heater is enabled. + * This function is used for HTU21 and MS8607 chipsets. + * + * Return: length of sprintf on success, negative errno otherwise. + */ +ssize_t ms_sensors_show_heater(struct ms_ht_dev *dev_data, + char *buf) +{ + u8 config_reg; + int ret; + + mutex_lock(&dev_data->lock); + ret = ms_sensors_read_config_reg(dev_data->client, &config_reg); + mutex_unlock(&dev_data->lock); + if (ret) + return ret; + + return sprintf(buf, "%d\n", (config_reg & 0x4) >> 2); +} +EXPORT_SYMBOL(ms_sensors_show_heater); + +/** + * ms_sensors_write_heater() - Write device heater + * @dev_data: pointer to temperature/humidity device data + * @buf: pointer to char buffer from user space + * @len: length of buf + * + * This function will write 1 or 0 value in the device + * to enable or disable heater. + * This function is used for HTU21 and MS8607 chipsets. + * + * Return: length of buffer, negative errno otherwise. + */ +ssize_t ms_sensors_write_heater(struct ms_ht_dev *dev_data, + const char *buf, size_t len) +{ + u8 val, config_reg; + int ret; + + ret = kstrtou8(buf, 10, &val); + if (ret) + return ret; + + if (val > 1) + return -EINVAL; + + mutex_lock(&dev_data->lock); + ret = ms_sensors_read_config_reg(dev_data->client, &config_reg); + if (ret) { + mutex_unlock(&dev_data->lock); + return ret; + } + + config_reg &= 0xFB; + config_reg |= val << 2; + + ret = i2c_smbus_write_byte_data(dev_data->client, + MS_SENSORS_CONFIG_REG_WRITE, + config_reg); + mutex_unlock(&dev_data->lock); + if (ret) { + dev_err(&dev_data->client->dev, "Unable to write config register\n"); + return ret; + } + + return len; +} +EXPORT_SYMBOL(ms_sensors_write_heater); + +/** + * ms_sensors_ht_read_temperature() - Read temperature + * @dev_data: pointer to temperature/humidity device data + * @temperature:pointer to temperature destination value + * + * This function will get temperature ADC value from the device, + * check the CRC and compute the temperature value. + * This function is used for TSYS02D, HTU21 and MS8607 chipsets. + * + * Return: 0 on success, negative errno otherwise. + */ +int ms_sensors_ht_read_temperature(struct ms_ht_dev *dev_data, + s32 *temperature) +{ + int ret; + u32 adc; + u16 delay; + + mutex_lock(&dev_data->lock); + delay = ms_sensors_ht_t_conversion_time[dev_data->res_index]; + ret = ms_sensors_convert_and_read(dev_data->client, + MS_SENSORS_HT_T_CONVERSION_START, + MS_SENSORS_NO_READ_CMD, + delay, &adc); + mutex_unlock(&dev_data->lock); + if (ret) + return ret; + + if (!ms_sensors_crc_valid(adc)) { + dev_err(&dev_data->client->dev, + "Temperature read crc check error\n"); + return -ENODEV; + } + + /* Temperature algorithm */ + *temperature = (((s64)(adc >> 8) * 175720) >> 16) - 46850; + + return 0; +} +EXPORT_SYMBOL(ms_sensors_ht_read_temperature); + +/** + * ms_sensors_ht_read_humidity() - Read humidity + * @dev_data: pointer to temperature/humidity device data + * @humidity: pointer to humidity destination value + * + * This function will get humidity ADC value from the device, + * check the CRC and compute the temperature value. + * This function is used for HTU21 and MS8607 chipsets. + * + * Return: 0 on success, negative errno otherwise. + */ +int ms_sensors_ht_read_humidity(struct ms_ht_dev *dev_data, + u32 *humidity) +{ + int ret; + u32 adc; + u16 delay; + + mutex_lock(&dev_data->lock); + delay = ms_sensors_ht_h_conversion_time[dev_data->res_index]; + ret = ms_sensors_convert_and_read(dev_data->client, + MS_SENSORS_HT_H_CONVERSION_START, + MS_SENSORS_NO_READ_CMD, + delay, &adc); + mutex_unlock(&dev_data->lock); + if (ret) + return ret; + + if (!ms_sensors_crc_valid(adc)) { + dev_err(&dev_data->client->dev, + "Humidity read crc check error\n"); + return -ENODEV; + } + + /* Humidity algorithm */ + *humidity = (((s32)(adc >> 8) * 12500) >> 16) * 10 - 6000; + if (*humidity >= 100000) + *humidity = 100000; + + return 0; +} +EXPORT_SYMBOL(ms_sensors_ht_read_humidity); + +/** + * ms_sensors_tp_crc_valid() - CRC check function for + * Temperature and pressure devices. + * This function is only used when reading PROM coefficients + * + * @prom: pointer to PROM coefficients array + * @len: length of PROM coefficients array + * + * Return: True if CRC is ok. + */ +static bool ms_sensors_tp_crc_valid(u16 *prom, u8 len) +{ + unsigned int cnt, n_bit; + u16 n_rem = 0x0000, crc_read = prom[0], crc = (*prom & 0xF000) >> 12; + + prom[len - 1] = 0; + prom[0] &= 0x0FFF; /* Clear the CRC computation part */ + + for (cnt = 0; cnt < len * 2; cnt++) { + if (cnt % 2 == 1) + n_rem ^= prom[cnt >> 1] & 0x00FF; + else + n_rem ^= prom[cnt >> 1] >> 8; + + for (n_bit = 8; n_bit > 0; n_bit--) { + if (n_rem & 0x8000) + n_rem = (n_rem << 1) ^ 0x3000; + else + n_rem <<= 1; + } + } + n_rem >>= 12; + prom[0] = crc_read; + + return n_rem == crc; +} + +/** + * ms_sensors_tp_read_prom() - prom coeff read function + * @dev_data: pointer to temperature/pressure device data + * + * This function will read prom coefficients and check CRC. + * This function is used for MS5637 and MS8607 chipsets. + * + * Return: 0 on success, negative errno otherwise. + */ +int ms_sensors_tp_read_prom(struct ms_tp_dev *dev_data) +{ + int i, ret; + + for (i = 0; i < MS_SENSORS_TP_PROM_WORDS_NB; i++) { + ret = ms_sensors_read_prom_word( + dev_data->client, + MS_SENSORS_TP_PROM_READ + (i << 1), + &dev_data->prom[i]); + + if (ret) + return ret; + } + + if (!ms_sensors_tp_crc_valid(dev_data->prom, + MS_SENSORS_TP_PROM_WORDS_NB + 1)) { + dev_err(&dev_data->client->dev, + "Calibration coefficients crc check error\n"); + return -ENODEV; + } + + return 0; +} +EXPORT_SYMBOL(ms_sensors_tp_read_prom); + +/** + * ms_sensors_read_temp_and_pressure() - read temp and pressure + * @dev_data: pointer to temperature/pressure device data + * @temperature:pointer to temperature destination value + * @pressure: pointer to pressure destination value + * + * This function will read ADC and compute pressure and temperature value. + * This function is used for MS5637 and MS8607 chipsets. + * + * Return: 0 on success, negative errno otherwise. + */ +int ms_sensors_read_temp_and_pressure(struct ms_tp_dev *dev_data, + int *temperature, + unsigned int *pressure) +{ + int ret; + u32 t_adc, p_adc; + s32 dt, temp; + s64 off, sens, t2, off2, sens2; + u16 *prom = dev_data->prom, delay; + + mutex_lock(&dev_data->lock); + delay = ms_sensors_tp_conversion_time[dev_data->res_index]; + + ret = ms_sensors_convert_and_read( + dev_data->client, + MS_SENSORS_TP_T_CONVERSION_START + + dev_data->res_index * 2, + MS_SENSORS_TP_ADC_READ, + delay, &t_adc); + if (ret) { + mutex_unlock(&dev_data->lock); + return ret; + } + + ret = ms_sensors_convert_and_read( + dev_data->client, + MS_SENSORS_TP_P_CONVERSION_START + + dev_data->res_index * 2, + MS_SENSORS_TP_ADC_READ, + delay, &p_adc); + mutex_unlock(&dev_data->lock); + if (ret) + return ret; + + dt = (s32)t_adc - (prom[5] << 8); + + /* Actual temperature = 2000 + dT * TEMPSENS */ + temp = 2000 + (((s64)dt * prom[6]) >> 23); + + /* Second order temperature compensation */ + if (temp < 2000) { + s64 tmp = (s64)temp - 2000; + + t2 = (3 * ((s64)dt * (s64)dt)) >> 33; + off2 = (61 * tmp * tmp) >> 4; + sens2 = (29 * tmp * tmp) >> 4; + + if (temp < -1500) { + s64 tmp = (s64)temp + 1500; + + off2 += 17 * tmp * tmp; + sens2 += 9 * tmp * tmp; + } + } else { + t2 = (5 * ((s64)dt * (s64)dt)) >> 38; + off2 = 0; + sens2 = 0; + } + + /* OFF = OFF_T1 + TCO * dT */ + off = (((s64)prom[2]) << 17) + ((((s64)prom[4]) * (s64)dt) >> 6); + off -= off2; + + /* Sensitivity at actual temperature = SENS_T1 + TCS * dT */ + sens = (((s64)prom[1]) << 16) + (((s64)prom[3] * dt) >> 7); + sens -= sens2; + + /* Temperature compensated pressure = D1 * SENS - OFF */ + *temperature = (temp - t2) * 10; + *pressure = (u32)(((((s64)p_adc * sens) >> 21) - off) >> 15); + + return 0; +} +EXPORT_SYMBOL(ms_sensors_read_temp_and_pressure); + +MODULE_DESCRIPTION("Measurement-Specialties common i2c driver"); +MODULE_AUTHOR("William Markezana <william.markezana@meas-spec.com>"); +MODULE_AUTHOR("Ludovic Tancerel <ludovic.tancerel@maplehightech.com>"); +MODULE_LICENSE("GPL v2"); + diff --git a/drivers/iio/common/ms_sensors/ms_sensors_i2c.h b/drivers/iio/common/ms_sensors/ms_sensors_i2c.h new file mode 100644 index 000000000000..7b614adc5cae --- /dev/null +++ b/drivers/iio/common/ms_sensors/ms_sensors_i2c.h @@ -0,0 +1,66 @@ +/* + * Measurements Specialties common sensor driver + * + * Copyright (c) 2015 Measurement-Specialties + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef _MS_SENSORS_I2C_H +#define _MS_SENSORS_I2C_H + +#include <linux/i2c.h> +#include <linux/mutex.h> + +#define MS_SENSORS_TP_PROM_WORDS_NB 7 + +/** + * struct ms_ht_dev - Humidity/Temperature sensor device structure + * @client: i2c client + * @lock: lock protecting the i2c conversion + * @res_index: index to selected sensor resolution + */ +struct ms_ht_dev { + struct i2c_client *client; + struct mutex lock; + u8 res_index; +}; + +/** + * struct ms_tp_dev - Temperature/Pressure sensor device structure + * @client: i2c client + * @lock: lock protecting the i2c conversion + * @prom: array of PROM coefficients used for conversion. Added element + * for CRC computation + * @res_index: index to selected sensor resolution + */ +struct ms_tp_dev { + struct i2c_client *client; + struct mutex lock; + u16 prom[MS_SENSORS_TP_PROM_WORDS_NB + 1]; + u8 res_index; +}; + +int ms_sensors_reset(void *cli, u8 cmd, unsigned int delay); +int ms_sensors_read_prom_word(void *cli, int cmd, u16 *word); +int ms_sensors_convert_and_read(void *cli, u8 conv, u8 rd, + unsigned int delay, u32 *adc); +int ms_sensors_read_serial(struct i2c_client *client, u64 *sn); +ssize_t ms_sensors_show_serial(struct ms_ht_dev *dev_data, char *buf); +ssize_t ms_sensors_write_resolution(struct ms_ht_dev *dev_data, u8 i); +ssize_t ms_sensors_show_battery_low(struct ms_ht_dev *dev_data, char *buf); +ssize_t ms_sensors_show_heater(struct ms_ht_dev *dev_data, char *buf); +ssize_t ms_sensors_write_heater(struct ms_ht_dev *dev_data, + const char *buf, size_t len); +int ms_sensors_ht_read_temperature(struct ms_ht_dev *dev_data, + s32 *temperature); +int ms_sensors_ht_read_humidity(struct ms_ht_dev *dev_data, + u32 *humidity); +int ms_sensors_tp_read_prom(struct ms_tp_dev *dev_data); +int ms_sensors_read_temp_and_pressure(struct ms_tp_dev *dev_data, + int *temperature, + unsigned int *pressure); + +#endif /* _MS_SENSORS_I2C_H */ diff --git a/drivers/iio/common/ssp_sensors/ssp_dev.c b/drivers/iio/common/ssp_sensors/ssp_dev.c index d338bb595db3..ea7adb638d99 100644 --- a/drivers/iio/common/ssp_sensors/ssp_dev.c +++ b/drivers/iio/common/ssp_sensors/ssp_dev.c @@ -700,7 +700,6 @@ static struct spi_driver ssp_driver = { .remove = ssp_remove, .driver = { .pm = &ssp_pm_ops, - .owner = THIS_MODULE, .of_match_table = of_match_ptr(ssp_of_match), .name = "sensorhub" }, diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c index 2e7fdb502645..25258e2c1a82 100644 --- a/drivers/iio/common/st_sensors/st_sensors_core.c +++ b/drivers/iio/common/st_sensors/st_sensors_core.c @@ -44,6 +44,28 @@ st_sensors_write_data_with_mask_error: return err; } +int st_sensors_debugfs_reg_access(struct iio_dev *indio_dev, + unsigned reg, unsigned writeval, + unsigned *readval) +{ + struct st_sensor_data *sdata = iio_priv(indio_dev); + u8 readdata; + int err; + + if (!readval) + return sdata->tf->write_byte(&sdata->tb, sdata->dev, + (u8)reg, (u8)writeval); + + err = sdata->tf->read_byte(&sdata->tb, sdata->dev, (u8)reg, &readdata); + if (err < 0) + return err; + + *readval = (unsigned)readdata; + + return 0; +} +EXPORT_SYMBOL(st_sensors_debugfs_reg_access); + static int st_sensors_match_odr(struct st_sensor_settings *sensor_settings, unsigned int odr, struct st_sensor_odr_avl *odr_out) { diff --git a/drivers/iio/dac/ad5064.c b/drivers/iio/dac/ad5064.c index c067e6821496..9e4d2c18b554 100644 --- a/drivers/iio/dac/ad5064.c +++ b/drivers/iio/dac/ad5064.c @@ -568,7 +568,6 @@ MODULE_DEVICE_TABLE(spi, ad5064_spi_ids); static struct spi_driver ad5064_spi_driver = { .driver = { .name = "ad5064", - .owner = THIS_MODULE, }, .probe = ad5064_spi_probe, .remove = ad5064_spi_remove, diff --git a/drivers/iio/dac/ad5360.c b/drivers/iio/dac/ad5360.c index 64634d7f578e..8ba0e9c50176 100644 --- a/drivers/iio/dac/ad5360.c +++ b/drivers/iio/dac/ad5360.c @@ -549,7 +549,6 @@ MODULE_DEVICE_TABLE(spi, ad5360_ids); static struct spi_driver ad5360_driver = { .driver = { .name = "ad5360", - .owner = THIS_MODULE, }, .probe = ad5360_probe, .remove = ad5360_remove, diff --git a/drivers/iio/dac/ad5380.c b/drivers/iio/dac/ad5380.c index 130de9b3e0bf..97d2c5111f43 100644 --- a/drivers/iio/dac/ad5380.c +++ b/drivers/iio/dac/ad5380.c @@ -519,7 +519,6 @@ MODULE_DEVICE_TABLE(spi, ad5380_spi_ids); static struct spi_driver ad5380_spi_driver = { .driver = { .name = "ad5380", - .owner = THIS_MODULE, }, .probe = ad5380_spi_probe, .remove = ad5380_spi_remove, diff --git a/drivers/iio/dac/ad5421.c b/drivers/iio/dac/ad5421.c index 787ef1d859c6..968712be967f 100644 --- a/drivers/iio/dac/ad5421.c +++ b/drivers/iio/dac/ad5421.c @@ -524,7 +524,6 @@ static int ad5421_probe(struct spi_device *spi) static struct spi_driver ad5421_driver = { .driver = { .name = "ad5421", - .owner = THIS_MODULE, }, .probe = ad5421_probe, }; diff --git a/drivers/iio/dac/ad5446.c b/drivers/iio/dac/ad5446.c index 07e17d72a3f3..b555552a0d80 100644 --- a/drivers/iio/dac/ad5446.c +++ b/drivers/iio/dac/ad5446.c @@ -481,7 +481,6 @@ static int ad5446_spi_remove(struct spi_device *spi) static struct spi_driver ad5446_spi_driver = { .driver = { .name = "ad5446", - .owner = THIS_MODULE, }, .probe = ad5446_spi_probe, .remove = ad5446_spi_remove, diff --git a/drivers/iio/dac/ad5449.c b/drivers/iio/dac/ad5449.c index 64d7256cbb6d..5f3202339420 100644 --- a/drivers/iio/dac/ad5449.c +++ b/drivers/iio/dac/ad5449.c @@ -356,7 +356,6 @@ MODULE_DEVICE_TABLE(spi, ad5449_spi_ids); static struct spi_driver ad5449_spi_driver = { .driver = { .name = "ad5449", - .owner = THIS_MODULE, }, .probe = ad5449_spi_probe, .remove = ad5449_spi_remove, diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c index 581ec141de3d..4e4c20d6d8b5 100644 --- a/drivers/iio/dac/ad5504.c +++ b/drivers/iio/dac/ad5504.c @@ -214,7 +214,6 @@ static struct attribute *ad5504_ev_attributes[] = { static struct attribute_group ad5504_ev_attribute_group = { .attrs = ad5504_ev_attributes, - .name = "events", }; static irqreturn_t ad5504_event_handler(int irq, void *private) @@ -364,7 +363,6 @@ MODULE_DEVICE_TABLE(spi, ad5504_id); static struct spi_driver ad5504_driver = { .driver = { .name = "ad5504", - .owner = THIS_MODULE, }, .probe = ad5504_probe, .remove = ad5504_remove, diff --git a/drivers/iio/dac/ad5624r_spi.c b/drivers/iio/dac/ad5624r_spi.c index e98428df0d44..5489ec43b95d 100644 --- a/drivers/iio/dac/ad5624r_spi.c +++ b/drivers/iio/dac/ad5624r_spi.c @@ -306,7 +306,6 @@ MODULE_DEVICE_TABLE(spi, ad5624r_id); static struct spi_driver ad5624r_driver = { .driver = { .name = "ad5624r", - .owner = THIS_MODULE, }, .probe = ad5624r_probe, .remove = ad5624r_remove, diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c index 15c73e20272d..d1d8450c19f6 100644 --- a/drivers/iio/dac/ad5686.c +++ b/drivers/iio/dac/ad5686.c @@ -395,7 +395,6 @@ MODULE_DEVICE_TABLE(spi, ad5686_id); static struct spi_driver ad5686_driver = { .driver = { .name = "ad5686", - .owner = THIS_MODULE, }, .probe = ad5686_probe, .remove = ad5686_remove, diff --git a/drivers/iio/dac/ad5755.c b/drivers/iio/dac/ad5755.c index a7c851f62d7c..bfb350a85a16 100644 --- a/drivers/iio/dac/ad5755.c +++ b/drivers/iio/dac/ad5755.c @@ -610,7 +610,6 @@ MODULE_DEVICE_TABLE(spi, ad5755_id); static struct spi_driver ad5755_driver = { .driver = { .name = "ad5755", - .owner = THIS_MODULE, }, .probe = ad5755_probe, .id_table = ad5755_id, diff --git a/drivers/iio/dac/ad5764.c b/drivers/iio/dac/ad5764.c index d0d38165339d..9a547bbf7d2b 100644 --- a/drivers/iio/dac/ad5764.c +++ b/drivers/iio/dac/ad5764.c @@ -357,7 +357,6 @@ MODULE_DEVICE_TABLE(spi, ad5764_ids); static struct spi_driver ad5764_driver = { .driver = { .name = "ad5764", - .owner = THIS_MODULE, }, .probe = ad5764_probe, .remove = ad5764_remove, diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c index 5ba785f18589..33e4ae5c42f8 100644 --- a/drivers/iio/dac/ad5791.c +++ b/drivers/iio/dac/ad5791.c @@ -461,7 +461,6 @@ MODULE_DEVICE_TABLE(spi, ad5791_id); static struct spi_driver ad5791_driver = { .driver = { .name = "ad5791", - .owner = THIS_MODULE, }, .probe = ad5791_probe, .remove = ad5791_remove, diff --git a/drivers/iio/dac/ad7303.c b/drivers/iio/dac/ad7303.c index fa2810032968..e690dd11e99f 100644 --- a/drivers/iio/dac/ad7303.c +++ b/drivers/iio/dac/ad7303.c @@ -281,6 +281,12 @@ static int ad7303_remove(struct spi_device *spi) return 0; } +static const struct of_device_id ad7303_spi_of_match[] = { + { .compatible = "adi,ad7303", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, ad7303_spi_of_match); + static const struct spi_device_id ad7303_spi_ids[] = { { "ad7303", 0 }, {} @@ -290,7 +296,7 @@ MODULE_DEVICE_TABLE(spi, ad7303_spi_ids); static struct spi_driver ad7303_driver = { .driver = { .name = "ad7303", - .owner = THIS_MODULE, + .of_match_table = of_match_ptr(ad7303_spi_of_match), }, .probe = ad7303_probe, .remove = ad7303_remove, diff --git a/drivers/iio/dac/m62332.c b/drivers/iio/dac/m62332.c index c23d7fa889ee..76e8b044b979 100644 --- a/drivers/iio/dac/m62332.c +++ b/drivers/iio/dac/m62332.c @@ -31,7 +31,6 @@ struct m62332_data { struct i2c_client *client; - u16 vref_mv; struct regulator *vcc; struct mutex mutex; u8 raw[M62332_CHANNELS]; @@ -40,8 +39,7 @@ struct m62332_data { #endif }; -static int m62332_set_value(struct iio_dev *indio_dev, - u8 val, int channel) +static int m62332_set_value(struct iio_dev *indio_dev, u8 val, int channel) { struct m62332_data *data = iio_priv(indio_dev); struct i2c_client *client = data->client; @@ -62,8 +60,8 @@ static int m62332_set_value(struct iio_dev *indio_dev, goto out; } - res = i2c_master_send(client, outbuf, 2); - if (res >= 0 && res != 2) + res = i2c_master_send(client, outbuf, ARRAY_SIZE(outbuf)); + if (res >= 0 && res != ARRAY_SIZE(outbuf)) res = -EIO; if (res < 0) goto out; @@ -87,46 +85,52 @@ static int m62332_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, - long m) + long mask) { struct m62332_data *data = iio_priv(indio_dev); + int ret; - switch (m) { + switch (mask) { case IIO_CHAN_INFO_SCALE: /* Corresponds to Vref / 2^(bits) */ - *val = data->vref_mv; + ret = regulator_get_voltage(data->vcc); + if (ret < 0) + return ret; + + *val = ret / 1000; /* mV */ *val2 = 8; + return IIO_VAL_FRACTIONAL_LOG2; case IIO_CHAN_INFO_RAW: *val = data->raw[chan->channel]; + return IIO_VAL_INT; case IIO_CHAN_INFO_OFFSET: *val = 1; + return IIO_VAL_INT; default: break; } + return -EINVAL; } static int m62332_write_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, int val, int val2, long mask) + struct iio_chan_spec const *chan, int val, int val2, + long mask) { - int ret; - switch (mask) { case IIO_CHAN_INFO_RAW: if (val < 0 || val > 255) return -EINVAL; - ret = m62332_set_value(indio_dev, val, chan->channel); - break; + return m62332_set_value(indio_dev, val, chan->channel); default: - ret = -EINVAL; break; } - return ret; + return -EINVAL; } #ifdef CONFIG_PM_SLEEP @@ -173,15 +177,15 @@ static const struct iio_info m62332_info = { .driver_module = THIS_MODULE, }; -#define M62332_CHANNEL(chan) { \ - .type = IIO_VOLTAGE, \ - .indexed = 1, \ - .output = 1, \ - .channel = (chan), \ - .datasheet_name = "CH" #chan, \ - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ - BIT(IIO_CHAN_INFO_SCALE) | \ - BIT(IIO_CHAN_INFO_OFFSET), \ +#define M62332_CHANNEL(chan) { \ + .type = IIO_VOLTAGE, \ + .indexed = 1, \ + .output = 1, \ + .channel = (chan), \ + .datasheet_name = "CH" #chan, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ + BIT(IIO_CHAN_INFO_OFFSET), \ } static const struct iio_chan_spec m62332_channels[M62332_CHANNELS] = { @@ -199,6 +203,7 @@ static int m62332_probe(struct i2c_client *client, indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); if (!indio_dev) return -ENOMEM; + data = iio_priv(indio_dev); i2c_set_clientdata(client, indio_dev); data->client = client; @@ -212,16 +217,11 @@ static int m62332_probe(struct i2c_client *client, /* establish that the iio_dev is a child of the i2c device */ indio_dev->dev.parent = &client->dev; - indio_dev->num_channels = M62332_CHANNELS; + indio_dev->num_channels = ARRAY_SIZE(m62332_channels); indio_dev->channels = m62332_channels; indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &m62332_info; - ret = regulator_get_voltage(data->vcc); - if (ret < 0) - return ret; - data->vref_mv = ret / 1000; /* mV */ - ret = iio_map_array_register(indio_dev, client->dev.platform_data); if (ret < 0) return ret; @@ -234,6 +234,7 @@ static int m62332_probe(struct i2c_client *client, err: iio_map_array_unregister(indio_dev); + return ret; } @@ -243,6 +244,8 @@ static int m62332_remove(struct i2c_client *client) iio_device_unregister(indio_dev); iio_map_array_unregister(indio_dev); + m62332_set_value(indio_dev, 0, 0); + m62332_set_value(indio_dev, 0, 1); return 0; } diff --git a/drivers/iio/dac/max5821.c b/drivers/iio/dac/max5821.c index 28b8748ea824..86e9e112f554 100644 --- a/drivers/iio/dac/max5821.c +++ b/drivers/iio/dac/max5821.c @@ -387,6 +387,7 @@ static const struct of_device_id max5821_of_match[] = { { .compatible = "maxim,max5821" }, { } }; +MODULE_DEVICE_TABLE(of, max5821_of_match); static struct i2c_driver max5821_driver = { .driver = { diff --git a/drivers/iio/dac/mcp4922.c b/drivers/iio/dac/mcp4922.c index 92cf4ca6981d..3854d201a5d6 100644 --- a/drivers/iio/dac/mcp4922.c +++ b/drivers/iio/dac/mcp4922.c @@ -203,7 +203,6 @@ MODULE_DEVICE_TABLE(spi, mcp4922_id); static struct spi_driver mcp4922_driver = { .driver = { .name = "mcp4922", - .owner = THIS_MODULE, }, .probe = mcp4922_probe, .remove = mcp4922_remove, diff --git a/drivers/iio/frequency/ad9523.c b/drivers/iio/frequency/ad9523.c index 50ed8d1ca45a..44a30f286de1 100644 --- a/drivers/iio/frequency/ad9523.c +++ b/drivers/iio/frequency/ad9523.c @@ -1027,7 +1027,6 @@ MODULE_DEVICE_TABLE(spi, ad9523_id); static struct spi_driver ad9523_driver = { .driver = { .name = "ad9523", - .owner = THIS_MODULE, }, .probe = ad9523_probe, .remove = ad9523_remove, diff --git a/drivers/iio/frequency/adf4350.c b/drivers/iio/frequency/adf4350.c index 9890c81c027d..d2d824b446f5 100644 --- a/drivers/iio/frequency/adf4350.c +++ b/drivers/iio/frequency/adf4350.c @@ -616,16 +616,24 @@ static int adf4350_remove(struct spi_device *spi) return 0; } +static const struct of_device_id adf4350_of_match[] = { + { .compatible = "adi,adf4350", }, + { .compatible = "adi,adf4351", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, adf4350_of_match); + static const struct spi_device_id adf4350_id[] = { {"adf4350", 4350}, {"adf4351", 4351}, {} }; +MODULE_DEVICE_TABLE(spi, adf4350_id); static struct spi_driver adf4350_driver = { .driver = { .name = "adf4350", - .owner = THIS_MODULE, + .of_match_table = of_match_ptr(adf4350_of_match), }, .probe = adf4350_probe, .remove = adf4350_remove, diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig index 8d2439345673..e816d29d6a62 100644 --- a/drivers/iio/gyro/Kconfig +++ b/drivers/iio/gyro/Kconfig @@ -52,15 +52,26 @@ config ADXRS450 config BMG160 tristate "BOSCH BMG160 Gyro Sensor" - depends on I2C + depends on (I2C || SPI_MASTER) select IIO_BUFFER select IIO_TRIGGERED_BUFFER + select BMG160_I2C if (I2C) + select BMG160_SPI if (SPI) help - Say yes here to build support for Bosch BMG160 Tri-axis Gyro Sensor - driver. This driver also supports BMI055 gyroscope. + Say yes here to build support for BOSCH BMG160 Tri-axis Gyro Sensor + driver connected via I2C or SPI. This driver also supports BMI055 + gyroscope. This driver can also be built as a module. If so, the module - will be called bmg160. + will be called bmg160_i2c or bmg160_spi. + +config BMG160_I2C + tristate + select REGMAP_I2C + +config BMG160_SPI + tristate + select REGMAP_SPI config HID_SENSOR_GYRO_3D depends on HID_SENSOR_HUB diff --git a/drivers/iio/gyro/Makefile b/drivers/iio/gyro/Makefile index f46341b39139..f866a4be0667 100644 --- a/drivers/iio/gyro/Makefile +++ b/drivers/iio/gyro/Makefile @@ -8,7 +8,9 @@ obj-$(CONFIG_ADIS16130) += adis16130.o obj-$(CONFIG_ADIS16136) += adis16136.o obj-$(CONFIG_ADIS16260) += adis16260.o obj-$(CONFIG_ADXRS450) += adxrs450.o -obj-$(CONFIG_BMG160) += bmg160.o +obj-$(CONFIG_BMG160) += bmg160_core.o +obj-$(CONFIG_BMG160_I2C) += bmg160_i2c.o +obj-$(CONFIG_BMG160_SPI) += bmg160_spi.o obj-$(CONFIG_HID_SENSOR_GYRO_3D) += hid-sensor-gyro-3d.o diff --git a/drivers/iio/gyro/adis16080.c b/drivers/iio/gyro/adis16080.c index add509837269..ad31a1372a04 100644 --- a/drivers/iio/gyro/adis16080.c +++ b/drivers/iio/gyro/adis16080.c @@ -228,7 +228,6 @@ MODULE_DEVICE_TABLE(spi, adis16080_ids); static struct spi_driver adis16080_driver = { .driver = { .name = "adis16080", - .owner = THIS_MODULE, }, .probe = adis16080_probe, .remove = adis16080_remove, diff --git a/drivers/iio/gyro/adis16130.c b/drivers/iio/gyro/adis16130.c index 8d08c7ed1ea6..e5241f41e65e 100644 --- a/drivers/iio/gyro/adis16130.c +++ b/drivers/iio/gyro/adis16130.c @@ -167,7 +167,6 @@ static int adis16130_probe(struct spi_device *spi) static struct spi_driver adis16130_driver = { .driver = { .name = "adis16130", - .owner = THIS_MODULE, }, .probe = adis16130_probe, }; diff --git a/drivers/iio/gyro/adis16136.c b/drivers/iio/gyro/adis16136.c index 26de876b223d..f8d1c2210066 100644 --- a/drivers/iio/gyro/adis16136.c +++ b/drivers/iio/gyro/adis16136.c @@ -570,7 +570,6 @@ MODULE_DEVICE_TABLE(spi, adis16136_ids); static struct spi_driver adis16136_driver = { .driver = { .name = "adis16136", - .owner = THIS_MODULE, }, .id_table = adis16136_ids, .probe = adis16136_probe, diff --git a/drivers/iio/gyro/adis16260.c b/drivers/iio/gyro/adis16260.c index 00c6ad9bf35f..7da8825f4791 100644 --- a/drivers/iio/gyro/adis16260.c +++ b/drivers/iio/gyro/adis16260.c @@ -435,7 +435,6 @@ MODULE_DEVICE_TABLE(spi, adis16260_id); static struct spi_driver adis16260_driver = { .driver = { .name = "adis16260", - .owner = THIS_MODULE, }, .probe = adis16260_probe, .remove = adis16260_remove, diff --git a/drivers/iio/gyro/adxrs450.c b/drivers/iio/gyro/adxrs450.c index eb0e08ec9e20..a330d4288bb0 100644 --- a/drivers/iio/gyro/adxrs450.c +++ b/drivers/iio/gyro/adxrs450.c @@ -456,7 +456,6 @@ MODULE_DEVICE_TABLE(spi, adxrs450_id); static struct spi_driver adxrs450_driver = { .driver = { .name = "adxrs450", - .owner = THIS_MODULE, }, .probe = adxrs450_probe, .id_table = adxrs450_id, diff --git a/drivers/iio/gyro/bmg160.h b/drivers/iio/gyro/bmg160.h new file mode 100644 index 000000000000..72db723c8fb6 --- /dev/null +++ b/drivers/iio/gyro/bmg160.h @@ -0,0 +1,10 @@ +#ifndef BMG160_H_ +#define BMG160_H_ + +extern const struct dev_pm_ops bmg160_pm_ops; + +int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq, + const char *name); +void bmg160_core_remove(struct device *dev); + +#endif /* BMG160_H_ */ diff --git a/drivers/iio/gyro/bmg160.c b/drivers/iio/gyro/bmg160_core.c index 460bf715d541..02ff789852a0 100644 --- a/drivers/iio/gyro/bmg160.c +++ b/drivers/iio/gyro/bmg160_core.c @@ -13,7 +13,6 @@ */ #include <linux/module.h> -#include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/delay.h> #include <linux/slab.h> @@ -28,8 +27,9 @@ #include <linux/iio/events.h> #include <linux/iio/trigger_consumer.h> #include <linux/iio/triggered_buffer.h> +#include <linux/regmap.h> +#include "bmg160.h" -#define BMG160_DRV_NAME "bmg160" #define BMG160_IRQ_NAME "bmg160_event" #define BMG160_GPIO_NAME "gpio_int" @@ -97,7 +97,8 @@ #define BMG160_AUTO_SUSPEND_DELAY_MS 2000 struct bmg160_data { - struct i2c_client *client; + struct device *dev; + struct regmap *regmap; struct iio_trigger *dready_trig; struct iio_trigger *motion_trig; struct mutex mutex; @@ -108,6 +109,7 @@ struct bmg160_data { int slope_thres; bool dready_trigger_on; bool motion_trigger_on; + int irq; }; enum bmg160_axis { @@ -138,10 +140,9 @@ static int bmg160_set_mode(struct bmg160_data *data, u8 mode) { int ret; - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_PMU_LPW, mode); + ret = regmap_write(data->regmap, BMG160_REG_PMU_LPW, mode); if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_pmu_lpw\n"); + dev_err(data->dev, "Error writing reg_pmu_lpw\n"); return ret; } @@ -169,10 +170,9 @@ static int bmg160_set_bw(struct bmg160_data *data, int val) if (bw_bits < 0) return bw_bits; - ret = i2c_smbus_write_byte_data(data->client, BMG160_REG_PMU_BW, - bw_bits); + ret = regmap_write(data->regmap, BMG160_REG_PMU_BW, bw_bits); if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_pmu_bw\n"); + dev_err(data->dev, "Error writing reg_pmu_bw\n"); return ret; } @@ -184,16 +184,17 @@ static int bmg160_set_bw(struct bmg160_data *data, int val) static int bmg160_chip_init(struct bmg160_data *data) { int ret; + unsigned int val; - ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_CHIP_ID); + ret = regmap_read(data->regmap, BMG160_REG_CHIP_ID, &val); if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_chip_id\n"); + dev_err(data->dev, "Error reading reg_chip_id\n"); return ret; } - dev_dbg(&data->client->dev, "Chip Id %x\n", ret); - if (ret != BMG160_CHIP_ID_VAL) { - dev_err(&data->client->dev, "invalid chip %x\n", ret); + dev_dbg(data->dev, "Chip Id %x\n", val); + if (val != BMG160_CHIP_ID_VAL) { + dev_err(data->dev, "invalid chip %x\n", val); return -ENODEV; } @@ -210,42 +211,33 @@ static int bmg160_chip_init(struct bmg160_data *data) return ret; /* Set Default Range */ - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_RANGE, - BMG160_RANGE_500DPS); + ret = regmap_write(data->regmap, BMG160_REG_RANGE, BMG160_RANGE_500DPS); if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_range\n"); + dev_err(data->dev, "Error writing reg_range\n"); return ret; } data->dps_range = BMG160_RANGE_500DPS; - ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_SLOPE_THRES); + ret = regmap_read(data->regmap, BMG160_REG_SLOPE_THRES, &val); if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_slope_thres\n"); + dev_err(data->dev, "Error reading reg_slope_thres\n"); return ret; } - data->slope_thres = ret; + data->slope_thres = val; /* Set default interrupt mode */ - ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_EN_1); + ret = regmap_update_bits(data->regmap, BMG160_REG_INT_EN_1, + BMG160_INT1_BIT_OD, 0); if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_int_en_1\n"); - return ret; - } - ret &= ~BMG160_INT1_BIT_OD; - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_INT_EN_1, ret); - if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_int_en_1\n"); + dev_err(data->dev, "Error updating bits in reg_int_en_1\n"); return ret; } - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_INT_RST_LATCH, - BMG160_INT_MODE_LATCH_INT | - BMG160_INT_MODE_LATCH_RESET); + ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, + BMG160_INT_MODE_LATCH_INT | + BMG160_INT_MODE_LATCH_RESET); if (ret < 0) { - dev_err(&data->client->dev, + dev_err(data->dev, "Error writing reg_motion_intr\n"); return ret; } @@ -259,17 +251,17 @@ static int bmg160_set_power_state(struct bmg160_data *data, bool on) int ret; if (on) - ret = pm_runtime_get_sync(&data->client->dev); + ret = pm_runtime_get_sync(data->dev); else { - pm_runtime_mark_last_busy(&data->client->dev); - ret = pm_runtime_put_autosuspend(&data->client->dev); + pm_runtime_mark_last_busy(data->dev); + ret = pm_runtime_put_autosuspend(data->dev); } if (ret < 0) { - dev_err(&data->client->dev, + dev_err(data->dev, "Failed: bmg160_set_power_state for %d\n", on); if (on) - pm_runtime_put_noidle(&data->client->dev); + pm_runtime_put_noidle(data->dev); return ret; } @@ -284,43 +276,30 @@ static int bmg160_setup_any_motion_interrupt(struct bmg160_data *data, int ret; /* Enable/Disable INT_MAP0 mapping */ - ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_MAP_0); - if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_int_map0\n"); - return ret; - } - if (status) - ret |= BMG160_INT_MAP_0_BIT_ANY; - else - ret &= ~BMG160_INT_MAP_0_BIT_ANY; - - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_INT_MAP_0, - ret); + ret = regmap_update_bits(data->regmap, BMG160_REG_INT_MAP_0, + BMG160_INT_MAP_0_BIT_ANY, + (status ? BMG160_INT_MAP_0_BIT_ANY : 0)); if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_int_map0\n"); + dev_err(data->dev, "Error updating bits reg_int_map0\n"); return ret; } /* Enable/Disable slope interrupts */ if (status) { /* Update slope thres */ - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_SLOPE_THRES, - data->slope_thres); + ret = regmap_write(data->regmap, BMG160_REG_SLOPE_THRES, + data->slope_thres); if (ret < 0) { - dev_err(&data->client->dev, + dev_err(data->dev, "Error writing reg_slope_thres\n"); return ret; } - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_MOTION_INTR, - BMG160_INT_MOTION_X | - BMG160_INT_MOTION_Y | - BMG160_INT_MOTION_Z); + ret = regmap_write(data->regmap, BMG160_REG_MOTION_INTR, + BMG160_INT_MOTION_X | BMG160_INT_MOTION_Y | + BMG160_INT_MOTION_Z); if (ret < 0) { - dev_err(&data->client->dev, + dev_err(data->dev, "Error writing reg_motion_intr\n"); return ret; } @@ -331,28 +310,26 @@ static int bmg160_setup_any_motion_interrupt(struct bmg160_data *data, * to set latched mode, we will be flooded anyway with INTR */ if (!data->dready_trigger_on) { - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_INT_RST_LATCH, - BMG160_INT_MODE_LATCH_INT | - BMG160_INT_MODE_LATCH_RESET); + ret = regmap_write(data->regmap, + BMG160_REG_INT_RST_LATCH, + BMG160_INT_MODE_LATCH_INT | + BMG160_INT_MODE_LATCH_RESET); if (ret < 0) { - dev_err(&data->client->dev, + dev_err(data->dev, "Error writing reg_rst_latch\n"); return ret; } } - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_INT_EN_0, - BMG160_DATA_ENABLE_INT); + ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, + BMG160_DATA_ENABLE_INT); - } else - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_INT_EN_0, - 0); + } else { + ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, 0); + } if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_int_en0\n"); + dev_err(data->dev, "Error writing reg_int_en0\n"); return ret; } @@ -365,59 +342,43 @@ static int bmg160_setup_new_data_interrupt(struct bmg160_data *data, int ret; /* Enable/Disable INT_MAP1 mapping */ - ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_MAP_1); - if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_int_map1\n"); - return ret; - } - - if (status) - ret |= BMG160_INT_MAP_1_BIT_NEW_DATA; - else - ret &= ~BMG160_INT_MAP_1_BIT_NEW_DATA; - - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_INT_MAP_1, - ret); + ret = regmap_update_bits(data->regmap, BMG160_REG_INT_MAP_1, + BMG160_INT_MAP_1_BIT_NEW_DATA, + (status ? BMG160_INT_MAP_1_BIT_NEW_DATA : 0)); if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_int_map1\n"); + dev_err(data->dev, "Error updating bits in reg_int_map1\n"); return ret; } if (status) { - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_INT_RST_LATCH, - BMG160_INT_MODE_NON_LATCH_INT | - BMG160_INT_MODE_LATCH_RESET); + ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, + BMG160_INT_MODE_NON_LATCH_INT | + BMG160_INT_MODE_LATCH_RESET); if (ret < 0) { - dev_err(&data->client->dev, + dev_err(data->dev, "Error writing reg_rst_latch\n"); return ret; } - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_INT_EN_0, - BMG160_DATA_ENABLE_INT); + ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, + BMG160_DATA_ENABLE_INT); } else { /* Restore interrupt mode */ - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_INT_RST_LATCH, - BMG160_INT_MODE_LATCH_INT | - BMG160_INT_MODE_LATCH_RESET); + ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, + BMG160_INT_MODE_LATCH_INT | + BMG160_INT_MODE_LATCH_RESET); if (ret < 0) { - dev_err(&data->client->dev, + dev_err(data->dev, "Error writing reg_rst_latch\n"); return ret; } - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_INT_EN_0, - 0); + ret = regmap_write(data->regmap, BMG160_REG_INT_EN_0, 0); } if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_int_en0\n"); + dev_err(data->dev, "Error writing reg_int_en0\n"); return ret; } @@ -444,12 +405,10 @@ static int bmg160_set_scale(struct bmg160_data *data, int val) for (i = 0; i < ARRAY_SIZE(bmg160_scale_table); ++i) { if (bmg160_scale_table[i].scale == val) { - ret = i2c_smbus_write_byte_data( - data->client, - BMG160_REG_RANGE, - bmg160_scale_table[i].dps_range); + ret = regmap_write(data->regmap, BMG160_REG_RANGE, + bmg160_scale_table[i].dps_range); if (ret < 0) { - dev_err(&data->client->dev, + dev_err(data->dev, "Error writing reg_range\n"); return ret; } @@ -464,6 +423,7 @@ static int bmg160_set_scale(struct bmg160_data *data, int val) static int bmg160_get_temp(struct bmg160_data *data, int *val) { int ret; + unsigned int raw_val; mutex_lock(&data->mutex); ret = bmg160_set_power_state(data, true); @@ -472,15 +432,15 @@ static int bmg160_get_temp(struct bmg160_data *data, int *val) return ret; } - ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_TEMP); + ret = regmap_read(data->regmap, BMG160_REG_TEMP, &raw_val); if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_temp\n"); + dev_err(data->dev, "Error reading reg_temp\n"); bmg160_set_power_state(data, false); mutex_unlock(&data->mutex); return ret; } - *val = sign_extend32(ret, 7); + *val = sign_extend32(raw_val, 7); ret = bmg160_set_power_state(data, false); mutex_unlock(&data->mutex); if (ret < 0) @@ -492,6 +452,7 @@ static int bmg160_get_temp(struct bmg160_data *data, int *val) static int bmg160_get_axis(struct bmg160_data *data, int axis, int *val) { int ret; + unsigned int raw_val; mutex_lock(&data->mutex); ret = bmg160_set_power_state(data, true); @@ -500,15 +461,16 @@ static int bmg160_get_axis(struct bmg160_data *data, int axis, int *val) return ret; } - ret = i2c_smbus_read_word_data(data->client, BMG160_AXIS_TO_REG(axis)); + ret = regmap_bulk_read(data->regmap, BMG160_AXIS_TO_REG(axis), &raw_val, + 2); if (ret < 0) { - dev_err(&data->client->dev, "Error reading axis %d\n", axis); + dev_err(data->dev, "Error reading axis %d\n", axis); bmg160_set_power_state(data, false); mutex_unlock(&data->mutex); return ret; } - *val = sign_extend32(ret, 15); + *val = sign_extend32(raw_val, 15); ret = bmg160_set_power_state(data, false); mutex_unlock(&data->mutex); if (ret < 0) @@ -807,12 +769,13 @@ static irqreturn_t bmg160_trigger_handler(int irq, void *p) struct iio_dev *indio_dev = pf->indio_dev; struct bmg160_data *data = iio_priv(indio_dev); int bit, ret, i = 0; + unsigned int val; mutex_lock(&data->mutex); for_each_set_bit(bit, indio_dev->active_scan_mask, indio_dev->masklength) { - ret = i2c_smbus_read_word_data(data->client, - BMG160_AXIS_TO_REG(bit)); + ret = regmap_bulk_read(data->regmap, BMG160_AXIS_TO_REG(bit), + &val, 2); if (ret < 0) { mutex_unlock(&data->mutex); goto err; @@ -840,12 +803,11 @@ static int bmg160_trig_try_reen(struct iio_trigger *trig) return 0; /* Set latched mode interrupt and clear any latched interrupt */ - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_INT_RST_LATCH, - BMG160_INT_MODE_LATCH_INT | - BMG160_INT_MODE_LATCH_RESET); + ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, + BMG160_INT_MODE_LATCH_INT | + BMG160_INT_MODE_LATCH_RESET); if (ret < 0) { - dev_err(&data->client->dev, "Error writing reg_rst_latch\n"); + dev_err(data->dev, "Error writing reg_rst_latch\n"); return ret; } @@ -907,33 +869,34 @@ static irqreturn_t bmg160_event_handler(int irq, void *private) struct bmg160_data *data = iio_priv(indio_dev); int ret; int dir; + unsigned int val; - ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_STATUS_2); + ret = regmap_read(data->regmap, BMG160_REG_INT_STATUS_2, &val); if (ret < 0) { - dev_err(&data->client->dev, "Error reading reg_int_status2\n"); + dev_err(data->dev, "Error reading reg_int_status2\n"); goto ack_intr_status; } - if (ret & 0x08) + if (val & 0x08) dir = IIO_EV_DIR_RISING; else dir = IIO_EV_DIR_FALLING; - if (ret & BMG160_ANY_MOTION_BIT_X) + if (val & BMG160_ANY_MOTION_BIT_X) iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, 0, IIO_MOD_X, IIO_EV_TYPE_ROC, dir), iio_get_time_ns()); - if (ret & BMG160_ANY_MOTION_BIT_Y) + if (val & BMG160_ANY_MOTION_BIT_Y) iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, 0, IIO_MOD_Y, IIO_EV_TYPE_ROC, dir), iio_get_time_ns()); - if (ret & BMG160_ANY_MOTION_BIT_Z) + if (val & BMG160_ANY_MOTION_BIT_Z) iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, 0, IIO_MOD_Z, @@ -943,12 +906,11 @@ static irqreturn_t bmg160_event_handler(int irq, void *private) ack_intr_status: if (!data->dready_trigger_on) { - ret = i2c_smbus_write_byte_data(data->client, - BMG160_REG_INT_RST_LATCH, - BMG160_INT_MODE_LATCH_INT | - BMG160_INT_MODE_LATCH_RESET); + ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH, + BMG160_INT_MODE_LATCH_INT | + BMG160_INT_MODE_LATCH_RESET); if (ret < 0) - dev_err(&data->client->dev, + dev_err(data->dev, "Error writing reg_rst_latch\n"); } @@ -993,18 +955,13 @@ static const struct iio_buffer_setup_ops bmg160_buffer_setup_ops = { .postdisable = bmg160_buffer_postdisable, }; -static int bmg160_gpio_probe(struct i2c_client *client, - struct bmg160_data *data) +static int bmg160_gpio_probe(struct bmg160_data *data) { struct device *dev; struct gpio_desc *gpio; - int ret; - - if (!client) - return -EINVAL; - dev = &client->dev; + dev = data->dev; /* data ready gpio interrupt pin */ gpio = devm_gpiod_get_index(dev, BMG160_GPIO_NAME, 0, GPIOD_IN); @@ -1013,11 +970,12 @@ static int bmg160_gpio_probe(struct i2c_client *client, return PTR_ERR(gpio); } - ret = gpiod_to_irq(gpio); + data->irq = gpiod_to_irq(gpio); - dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret); + dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), + data->irq); - return ret; + return 0; } static const char *bmg160_match_acpi_device(struct device *dev) @@ -1031,21 +989,22 @@ static const char *bmg160_match_acpi_device(struct device *dev) return dev_name(dev); } -static int bmg160_probe(struct i2c_client *client, - const struct i2c_device_id *id) +int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq, + const char *name) { struct bmg160_data *data; struct iio_dev *indio_dev; int ret; - const char *name = NULL; - indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + indio_dev = devm_iio_device_alloc(dev, sizeof(*data)); if (!indio_dev) return -ENOMEM; data = iio_priv(indio_dev); - i2c_set_clientdata(client, indio_dev); - data->client = client; + dev_set_drvdata(dev, indio_dev); + data->dev = dev; + data->irq = irq; + data->regmap = regmap; ret = bmg160_chip_init(data); if (ret < 0) @@ -1053,25 +1012,22 @@ static int bmg160_probe(struct i2c_client *client, mutex_init(&data->mutex); - if (id) - name = id->name; + if (ACPI_HANDLE(dev)) + name = bmg160_match_acpi_device(dev); - if (ACPI_HANDLE(&client->dev)) - name = bmg160_match_acpi_device(&client->dev); - - indio_dev->dev.parent = &client->dev; + indio_dev->dev.parent = dev; indio_dev->channels = bmg160_channels; indio_dev->num_channels = ARRAY_SIZE(bmg160_channels); indio_dev->name = name; indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &bmg160_info; - if (client->irq <= 0) - client->irq = bmg160_gpio_probe(client, data); + if (data->irq <= 0) + bmg160_gpio_probe(data); - if (client->irq > 0) { - ret = devm_request_threaded_irq(&client->dev, - client->irq, + if (data->irq > 0) { + ret = devm_request_threaded_irq(dev, + data->irq, bmg160_data_rdy_trig_poll, bmg160_event_handler, IRQF_TRIGGER_RISING, @@ -1080,28 +1036,28 @@ static int bmg160_probe(struct i2c_client *client, if (ret) return ret; - data->dready_trig = devm_iio_trigger_alloc(&client->dev, + data->dready_trig = devm_iio_trigger_alloc(dev, "%s-dev%d", indio_dev->name, indio_dev->id); if (!data->dready_trig) return -ENOMEM; - data->motion_trig = devm_iio_trigger_alloc(&client->dev, + data->motion_trig = devm_iio_trigger_alloc(dev, "%s-any-motion-dev%d", indio_dev->name, indio_dev->id); if (!data->motion_trig) return -ENOMEM; - data->dready_trig->dev.parent = &client->dev; + data->dready_trig->dev.parent = dev; data->dready_trig->ops = &bmg160_trigger_ops; iio_trigger_set_drvdata(data->dready_trig, indio_dev); ret = iio_trigger_register(data->dready_trig); if (ret) return ret; - data->motion_trig->dev.parent = &client->dev; + data->motion_trig->dev.parent = dev; data->motion_trig->ops = &bmg160_trigger_ops; iio_trigger_set_drvdata(data->motion_trig, indio_dev); ret = iio_trigger_register(data->motion_trig); @@ -1116,25 +1072,25 @@ static int bmg160_probe(struct i2c_client *client, bmg160_trigger_handler, &bmg160_buffer_setup_ops); if (ret < 0) { - dev_err(&client->dev, + dev_err(dev, "iio triggered buffer setup failed\n"); goto err_trigger_unregister; } ret = iio_device_register(indio_dev); if (ret < 0) { - dev_err(&client->dev, "unable to register iio device\n"); + dev_err(dev, "unable to register iio device\n"); goto err_buffer_cleanup; } - ret = pm_runtime_set_active(&client->dev); + ret = pm_runtime_set_active(dev); if (ret) goto err_iio_unregister; - pm_runtime_enable(&client->dev); - pm_runtime_set_autosuspend_delay(&client->dev, + pm_runtime_enable(dev); + pm_runtime_set_autosuspend_delay(dev, BMG160_AUTO_SUSPEND_DELAY_MS); - pm_runtime_use_autosuspend(&client->dev); + pm_runtime_use_autosuspend(dev); return 0; @@ -1150,15 +1106,16 @@ err_trigger_unregister: return ret; } +EXPORT_SYMBOL_GPL(bmg160_core_probe); -static int bmg160_remove(struct i2c_client *client) +void bmg160_core_remove(struct device *dev) { - struct iio_dev *indio_dev = i2c_get_clientdata(client); + struct iio_dev *indio_dev = dev_get_drvdata(dev); struct bmg160_data *data = iio_priv(indio_dev); - pm_runtime_disable(&client->dev); - pm_runtime_set_suspended(&client->dev); - pm_runtime_put_noidle(&client->dev); + pm_runtime_disable(dev); + pm_runtime_set_suspended(dev); + pm_runtime_put_noidle(dev); iio_device_unregister(indio_dev); iio_triggered_buffer_cleanup(indio_dev); @@ -1171,14 +1128,13 @@ static int bmg160_remove(struct i2c_client *client) mutex_lock(&data->mutex); bmg160_set_mode(data, BMG160_MODE_DEEP_SUSPEND); mutex_unlock(&data->mutex); - - return 0; } +EXPORT_SYMBOL_GPL(bmg160_core_remove); #ifdef CONFIG_PM_SLEEP static int bmg160_suspend(struct device *dev) { - struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); + struct iio_dev *indio_dev = dev_get_drvdata(dev); struct bmg160_data *data = iio_priv(indio_dev); mutex_lock(&data->mutex); @@ -1190,7 +1146,7 @@ static int bmg160_suspend(struct device *dev) static int bmg160_resume(struct device *dev) { - struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); + struct iio_dev *indio_dev = dev_get_drvdata(dev); struct bmg160_data *data = iio_priv(indio_dev); mutex_lock(&data->mutex); @@ -1206,13 +1162,13 @@ static int bmg160_resume(struct device *dev) #ifdef CONFIG_PM static int bmg160_runtime_suspend(struct device *dev) { - struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); + struct iio_dev *indio_dev = dev_get_drvdata(dev); struct bmg160_data *data = iio_priv(indio_dev); int ret; ret = bmg160_set_mode(data, BMG160_MODE_SUSPEND); if (ret < 0) { - dev_err(&data->client->dev, "set mode failed\n"); + dev_err(data->dev, "set mode failed\n"); return -EAGAIN; } @@ -1221,7 +1177,7 @@ static int bmg160_runtime_suspend(struct device *dev) static int bmg160_runtime_resume(struct device *dev) { - struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); + struct iio_dev *indio_dev = dev_get_drvdata(dev); struct bmg160_data *data = iio_priv(indio_dev); int ret; @@ -1235,39 +1191,12 @@ static int bmg160_runtime_resume(struct device *dev) } #endif -static const struct dev_pm_ops bmg160_pm_ops = { +const struct dev_pm_ops bmg160_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(bmg160_suspend, bmg160_resume) SET_RUNTIME_PM_OPS(bmg160_runtime_suspend, bmg160_runtime_resume, NULL) }; - -static const struct acpi_device_id bmg160_acpi_match[] = { - {"BMG0160", 0}, - {"BMI055B", 0}, - {}, -}; - -MODULE_DEVICE_TABLE(acpi, bmg160_acpi_match); - -static const struct i2c_device_id bmg160_id[] = { - {"bmg160", 0}, - {"bmi055_gyro", 0}, - {} -}; - -MODULE_DEVICE_TABLE(i2c, bmg160_id); - -static struct i2c_driver bmg160_driver = { - .driver = { - .name = BMG160_DRV_NAME, - .acpi_match_table = ACPI_PTR(bmg160_acpi_match), - .pm = &bmg160_pm_ops, - }, - .probe = bmg160_probe, - .remove = bmg160_remove, - .id_table = bmg160_id, -}; -module_i2c_driver(bmg160_driver); +EXPORT_SYMBOL_GPL(bmg160_pm_ops); MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/gyro/bmg160_i2c.c b/drivers/iio/gyro/bmg160_i2c.c new file mode 100644 index 000000000000..90126a5a7663 --- /dev/null +++ b/drivers/iio/gyro/bmg160_i2c.c @@ -0,0 +1,71 @@ +#include <linux/i2c.h> +#include <linux/regmap.h> +#include <linux/iio/iio.h> +#include <linux/module.h> +#include <linux/acpi.h> + +#include "bmg160.h" + +static const struct regmap_config bmg160_regmap_i2c_conf = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x3f +}; + +static int bmg160_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct regmap *regmap; + const char *name = NULL; + + regmap = devm_regmap_init_i2c(client, &bmg160_regmap_i2c_conf); + if (IS_ERR(regmap)) { + dev_err(&client->dev, "Failed to register i2c regmap %d\n", + (int)PTR_ERR(regmap)); + return PTR_ERR(regmap); + } + + if (id) + name = id->name; + + return bmg160_core_probe(&client->dev, regmap, client->irq, name); +} + +static int bmg160_i2c_remove(struct i2c_client *client) +{ + bmg160_core_remove(&client->dev); + + return 0; +} + +static const struct acpi_device_id bmg160_acpi_match[] = { + {"BMG0160", 0}, + {"BMI055B", 0}, + {}, +}; + +MODULE_DEVICE_TABLE(acpi, bmg160_acpi_match); + +static const struct i2c_device_id bmg160_i2c_id[] = { + {"bmg160", 0}, + {"bmi055_gyro", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, bmg160_i2c_id); + +static struct i2c_driver bmg160_i2c_driver = { + .driver = { + .name = "bmg160_i2c", + .acpi_match_table = ACPI_PTR(bmg160_acpi_match), + .pm = &bmg160_pm_ops, + }, + .probe = bmg160_i2c_probe, + .remove = bmg160_i2c_remove, + .id_table = bmg160_i2c_id, +}; +module_i2c_driver(bmg160_i2c_driver); + +MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("BMG160 I2C Gyro driver"); diff --git a/drivers/iio/gyro/bmg160_spi.c b/drivers/iio/gyro/bmg160_spi.c new file mode 100644 index 000000000000..021ea5fe6a37 --- /dev/null +++ b/drivers/iio/gyro/bmg160_spi.c @@ -0,0 +1,57 @@ +#include <linux/spi/spi.h> +#include <linux/regmap.h> +#include <linux/iio/iio.h> +#include <linux/module.h> + +#include "bmg160.h" + +static const struct regmap_config bmg160_regmap_spi_conf = { + .reg_bits = 8, + .val_bits = 8, + .max_register = 0x3f, +}; + +static int bmg160_spi_probe(struct spi_device *spi) +{ + struct regmap *regmap; + const struct spi_device_id *id = spi_get_device_id(spi); + + regmap = devm_regmap_init_spi(spi, &bmg160_regmap_spi_conf); + if (IS_ERR(regmap)) { + dev_err(&spi->dev, "Failed to register spi regmap %d\n", + (int)PTR_ERR(regmap)); + return PTR_ERR(regmap); + } + + return bmg160_core_probe(&spi->dev, regmap, spi->irq, id->name); +} + +static int bmg160_spi_remove(struct spi_device *spi) +{ + bmg160_core_remove(&spi->dev); + + return 0; +} + +static const struct spi_device_id bmg160_spi_id[] = { + {"bmg160", 0}, + {"bmi055_gyro", 0}, + {} +}; + +MODULE_DEVICE_TABLE(spi, bmg160_spi_id); + +static struct spi_driver bmg160_spi_driver = { + .driver = { + .name = "bmg160_spi", + .pm = &bmg160_pm_ops, + }, + .probe = bmg160_spi_probe, + .remove = bmg160_spi_remove, + .id_table = bmg160_spi_id, +}; +module_spi_driver(bmg160_spi_driver); + +MODULE_AUTHOR("Markus Pargmann <mpa@pengutronix.de>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("BMG160 SPI Gyro driver"); diff --git a/drivers/iio/gyro/st_gyro_core.c b/drivers/iio/gyro/st_gyro_core.c index 4b993a5bc9a1..02eddcebeea3 100644 --- a/drivers/iio/gyro/st_gyro_core.c +++ b/drivers/iio/gyro/st_gyro_core.c @@ -383,6 +383,7 @@ static const struct iio_info gyro_info = { .attrs = &st_gyro_attribute_group, .read_raw = &st_gyro_read_raw, .write_raw = &st_gyro_write_raw, + .debugfs_reg_access = &st_sensors_debugfs_reg_access, }; #ifdef CONFIG_IIO_TRIGGER diff --git a/drivers/iio/gyro/st_gyro_spi.c b/drivers/iio/gyro/st_gyro_spi.c index e59bead6bc3c..d2b7a5fa344c 100644 --- a/drivers/iio/gyro/st_gyro_spi.c +++ b/drivers/iio/gyro/st_gyro_spi.c @@ -60,7 +60,6 @@ MODULE_DEVICE_TABLE(spi, st_gyro_id_table); static struct spi_driver st_gyro_driver = { .driver = { - .owner = THIS_MODULE, .name = "st-gyro-spi", }, .probe = st_gyro_spi_probe, diff --git a/drivers/iio/humidity/Kconfig b/drivers/iio/humidity/Kconfig index 688c0d1cb47d..6a23698d347c 100644 --- a/drivers/iio/humidity/Kconfig +++ b/drivers/iio/humidity/Kconfig @@ -12,6 +12,29 @@ config DHT11 Other sensors should work as well as long as they speak the same protocol. +config HDC100X + tristate "TI HDC100x relative humidity and temperature sensor" + depends on I2C + help + Say yes here to build support for the TI HDC100x series of + relative humidity and temperature sensors. + + To compile this driver as a module, choose M here: the module + will be called hdc100x. + +config HTU21 + tristate "Measurement Specialties HTU21 humidity & temperature sensor" + depends on I2C + select IIO_MS_SENSORS_I2C + help + If you say yes here you get support for the Measurement Specialties + HTU21 humidity and temperature sensor. + This driver is also used for MS8607 temperature, pressure & humidity + sensor + + This driver can also be built as a module. If so, the module will + be called htu21. + config SI7005 tristate "SI7005 relative humidity and temperature sensor" depends on I2C diff --git a/drivers/iio/humidity/Makefile b/drivers/iio/humidity/Makefile index 86e2d26e9f4d..c9f089a9a6b8 100644 --- a/drivers/iio/humidity/Makefile +++ b/drivers/iio/humidity/Makefile @@ -3,5 +3,7 @@ # obj-$(CONFIG_DHT11) += dht11.o +obj-$(CONFIG_HDC100X) += hdc100x.o +obj-$(CONFIG_HTU21) += htu21.o obj-$(CONFIG_SI7005) += si7005.o obj-$(CONFIG_SI7020) += si7020.o diff --git a/drivers/iio/humidity/hdc100x.c b/drivers/iio/humidity/hdc100x.c new file mode 100644 index 000000000000..a7f61e881a49 --- /dev/null +++ b/drivers/iio/humidity/hdc100x.c @@ -0,0 +1,320 @@ +/* + * hdc100x.c - Support for the TI HDC100x temperature + humidity sensors + * + * Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/i2c.h> + +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> + +#define HDC100X_REG_TEMP 0x00 +#define HDC100X_REG_HUMIDITY 0x01 + +#define HDC100X_REG_CONFIG 0x02 +#define HDC100X_REG_CONFIG_HEATER_EN BIT(13) + +struct hdc100x_data { + struct i2c_client *client; + struct mutex lock; + u16 config; + + /* integration time of the sensor */ + int adc_int_us[2]; +}; + +/* integration time in us */ +static const int hdc100x_int_time[][3] = { + { 6350, 3650, 0 }, /* IIO_TEMP channel*/ + { 6500, 3850, 2500 }, /* IIO_HUMIDITYRELATIVE channel */ +}; + +/* HDC100X_REG_CONFIG shift and mask values */ +static const struct { + int shift; + int mask; +} hdc100x_resolution_shift[2] = { + { /* IIO_TEMP channel */ + .shift = 10, + .mask = 1 + }, + { /* IIO_HUMIDITYRELATIVE channel */ + .shift = 8, + .mask = 2, + }, +}; + +static IIO_CONST_ATTR(temp_integration_time_available, + "0.00365 0.00635"); + +static IIO_CONST_ATTR(humidityrelative_integration_time_available, + "0.0025 0.00385 0.0065"); + +static IIO_CONST_ATTR(out_current_heater_raw_available, + "0 1"); + +static struct attribute *hdc100x_attributes[] = { + &iio_const_attr_temp_integration_time_available.dev_attr.attr, + &iio_const_attr_humidityrelative_integration_time_available.dev_attr.attr, + &iio_const_attr_out_current_heater_raw_available.dev_attr.attr, + NULL +}; + +static struct attribute_group hdc100x_attribute_group = { + .attrs = hdc100x_attributes, +}; + +static const struct iio_chan_spec hdc100x_channels[] = { + { + .type = IIO_TEMP, + .address = HDC100X_REG_TEMP, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_INT_TIME) | + BIT(IIO_CHAN_INFO_OFFSET), + }, + { + .type = IIO_HUMIDITYRELATIVE, + .address = HDC100X_REG_HUMIDITY, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_INT_TIME) + }, + { + .type = IIO_CURRENT, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .extend_name = "heater", + .output = 1, + }, +}; + +static int hdc100x_update_config(struct hdc100x_data *data, int mask, int val) +{ + int tmp = (~mask & data->config) | val; + int ret; + + ret = i2c_smbus_write_word_swapped(data->client, + HDC100X_REG_CONFIG, tmp); + if (!ret) + data->config = tmp; + + return ret; +} + +static int hdc100x_set_it_time(struct hdc100x_data *data, int chan, int val2) +{ + int shift = hdc100x_resolution_shift[chan].shift; + int ret = -EINVAL; + int i; + + for (i = 0; i < ARRAY_SIZE(hdc100x_int_time[chan]); i++) { + if (val2 && val2 == hdc100x_int_time[chan][i]) { + ret = hdc100x_update_config(data, + hdc100x_resolution_shift[chan].mask << shift, + i << shift); + if (!ret) + data->adc_int_us[chan] = val2; + break; + } + } + + return ret; +} + +static int hdc100x_get_measurement(struct hdc100x_data *data, + struct iio_chan_spec const *chan) +{ + struct i2c_client *client = data->client; + int delay = data->adc_int_us[chan->address]; + int ret; + int val; + + /* start measurement */ + ret = i2c_smbus_write_byte(client, chan->address); + if (ret < 0) { + dev_err(&client->dev, "cannot start measurement"); + return ret; + } + + /* wait for integration time to pass */ + usleep_range(delay, delay + 1000); + + /* + * i2c_smbus_read_word_data cannot() be used here due to the command + * value not being understood and causes NAKs preventing any reading + * from being accessed. + */ + ret = i2c_smbus_read_byte(client); + if (ret < 0) { + dev_err(&client->dev, "cannot read high byte measurement"); + return ret; + } + val = ret << 6; + + ret = i2c_smbus_read_byte(client); + if (ret < 0) { + dev_err(&client->dev, "cannot read low byte measurement"); + return ret; + } + val |= ret >> 2; + + return val; +} + +static int hdc100x_get_heater_status(struct hdc100x_data *data) +{ + return !!(data->config & HDC100X_REG_CONFIG_HEATER_EN); +} + +static int hdc100x_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + struct hdc100x_data *data = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: { + int ret; + + mutex_lock(&data->lock); + if (chan->type == IIO_CURRENT) { + *val = hdc100x_get_heater_status(data); + ret = IIO_VAL_INT; + } else { + ret = hdc100x_get_measurement(data, chan); + if (ret >= 0) { + *val = ret; + ret = IIO_VAL_INT; + } + } + mutex_unlock(&data->lock); + return ret; + } + case IIO_CHAN_INFO_INT_TIME: + *val = 0; + *val2 = data->adc_int_us[chan->address]; + return IIO_VAL_INT_PLUS_MICRO; + case IIO_CHAN_INFO_SCALE: + if (chan->type == IIO_TEMP) { + *val = 165; + *val2 = 65536 >> 2; + return IIO_VAL_FRACTIONAL; + } else { + *val = 0; + *val2 = 10000; + return IIO_VAL_INT_PLUS_MICRO; + } + break; + case IIO_CHAN_INFO_OFFSET: + *val = -3971; + *val2 = 879096; + return IIO_VAL_INT_PLUS_MICRO; + default: + return -EINVAL; + } +} + +static int hdc100x_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct hdc100x_data *data = iio_priv(indio_dev); + int ret = -EINVAL; + + switch (mask) { + case IIO_CHAN_INFO_INT_TIME: + if (val != 0) + return -EINVAL; + + mutex_lock(&data->lock); + ret = hdc100x_set_it_time(data, chan->address, val2); + mutex_unlock(&data->lock); + return ret; + case IIO_CHAN_INFO_RAW: + if (chan->type != IIO_CURRENT || val2 != 0) + return -EINVAL; + + mutex_lock(&data->lock); + ret = hdc100x_update_config(data, HDC100X_REG_CONFIG_HEATER_EN, + val ? HDC100X_REG_CONFIG_HEATER_EN : 0); + mutex_unlock(&data->lock); + return ret; + default: + return -EINVAL; + } +} + +static const struct iio_info hdc100x_info = { + .read_raw = hdc100x_read_raw, + .write_raw = hdc100x_write_raw, + .attrs = &hdc100x_attribute_group, + .driver_module = THIS_MODULE, +}; + +static int hdc100x_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct iio_dev *indio_dev; + struct hdc100x_data *data; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_BYTE)) + return -ENODEV; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + data = iio_priv(indio_dev); + i2c_set_clientdata(client, indio_dev); + data->client = client; + mutex_init(&data->lock); + + indio_dev->dev.parent = &client->dev; + indio_dev->name = dev_name(&client->dev); + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->info = &hdc100x_info; + + indio_dev->channels = hdc100x_channels; + indio_dev->num_channels = ARRAY_SIZE(hdc100x_channels); + + /* be sure we are in a known state */ + hdc100x_set_it_time(data, 0, hdc100x_int_time[0][0]); + hdc100x_set_it_time(data, 1, hdc100x_int_time[1][0]); + + return devm_iio_device_register(&client->dev, indio_dev); +} + +static const struct i2c_device_id hdc100x_id[] = { + { "hdc100x", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, hdc100x_id); + +static struct i2c_driver hdc100x_driver = { + .driver = { + .name = "hdc100x", + }, + .probe = hdc100x_probe, + .id_table = hdc100x_id, +}; +module_i2c_driver(hdc100x_driver); + +MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>"); +MODULE_DESCRIPTION("TI HDC100x humidity and temperature sensor driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/iio/humidity/htu21.c b/drivers/iio/humidity/htu21.c new file mode 100644 index 000000000000..d1636a74980e --- /dev/null +++ b/drivers/iio/humidity/htu21.c @@ -0,0 +1,253 @@ +/* + * htu21.c - Support for Measurement-Specialties + * htu21 temperature & humidity sensor + * and humidity part of MS8607 sensor + * + * Copyright (c) 2014 Measurement-Specialties + * + * Licensed under the GPL-2. + * + * (7-bit I2C slave address 0x40) + * + * Datasheet: + * http://www.meas-spec.com/downloads/HTU21D.pdf + * Datasheet: + * http://www.meas-spec.com/downloads/MS8607-02BA01.pdf + */ + +#include <linux/init.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/stat.h> +#include <linux/module.h> +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> + +#include "../common/ms_sensors/ms_sensors_i2c.h" + +#define HTU21_RESET 0xFE + +enum { + HTU21, + MS8607 +}; + +static const int htu21_samp_freq[4] = { 20, 40, 70, 120 }; +/* String copy of the above const for readability purpose */ +static const char htu21_show_samp_freq[] = "20 40 70 120"; + +static int htu21_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *channel, int *val, + int *val2, long mask) +{ + int ret, temperature; + unsigned int humidity; + struct ms_ht_dev *dev_data = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_PROCESSED: + switch (channel->type) { + case IIO_TEMP: /* in milli °C */ + ret = ms_sensors_ht_read_temperature(dev_data, + &temperature); + if (ret) + return ret; + *val = temperature; + + return IIO_VAL_INT; + case IIO_HUMIDITYRELATIVE: /* in milli %RH */ + ret = ms_sensors_ht_read_humidity(dev_data, + &humidity); + if (ret) + return ret; + *val = humidity; + + return IIO_VAL_INT; + default: + return -EINVAL; + } + case IIO_CHAN_INFO_SAMP_FREQ: + *val = htu21_samp_freq[dev_data->res_index]; + + return IIO_VAL_INT; + default: + return -EINVAL; + } +} + +static int htu21_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct ms_ht_dev *dev_data = iio_priv(indio_dev); + int i, ret; + + switch (mask) { + case IIO_CHAN_INFO_SAMP_FREQ: + i = ARRAY_SIZE(htu21_samp_freq); + while (i-- > 0) + if (val == htu21_samp_freq[i]) + break; + if (i < 0) + return -EINVAL; + mutex_lock(&dev_data->lock); + dev_data->res_index = i; + ret = ms_sensors_write_resolution(dev_data, i); + mutex_unlock(&dev_data->lock); + + return ret; + default: + return -EINVAL; + } +} + +static const struct iio_chan_spec htu21_channels[] = { + { + .type = IIO_TEMP, + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_PROCESSED), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), + }, + { + .type = IIO_HUMIDITYRELATIVE, + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_PROCESSED), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), + } +}; + +/* + * Meas Spec recommendation is to not read temperature + * on this driver part for MS8607 + */ +static const struct iio_chan_spec ms8607_channels[] = { + { + .type = IIO_HUMIDITYRELATIVE, + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_PROCESSED), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), + } +}; + +static ssize_t htu21_show_battery_low(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct ms_ht_dev *dev_data = iio_priv(indio_dev); + + return ms_sensors_show_battery_low(dev_data, buf); +} + +static ssize_t htu21_show_heater(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct ms_ht_dev *dev_data = iio_priv(indio_dev); + + return ms_sensors_show_heater(dev_data, buf); +} + +static ssize_t htu21_write_heater(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t len) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct ms_ht_dev *dev_data = iio_priv(indio_dev); + + return ms_sensors_write_heater(dev_data, buf, len); +} + +static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(htu21_show_samp_freq); +static IIO_DEVICE_ATTR(battery_low, S_IRUGO, + htu21_show_battery_low, NULL, 0); +static IIO_DEVICE_ATTR(heater_enable, S_IRUGO | S_IWUSR, + htu21_show_heater, htu21_write_heater, 0); + +static struct attribute *htu21_attributes[] = { + &iio_const_attr_sampling_frequency_available.dev_attr.attr, + &iio_dev_attr_battery_low.dev_attr.attr, + &iio_dev_attr_heater_enable.dev_attr.attr, + NULL, +}; + +static const struct attribute_group htu21_attribute_group = { + .attrs = htu21_attributes, +}; + +static const struct iio_info htu21_info = { + .read_raw = htu21_read_raw, + .write_raw = htu21_write_raw, + .attrs = &htu21_attribute_group, + .driver_module = THIS_MODULE, +}; + +static int htu21_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct ms_ht_dev *dev_data; + struct iio_dev *indio_dev; + int ret; + u64 serial_number; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_WRITE_BYTE_DATA | + I2C_FUNC_SMBUS_WRITE_BYTE | + I2C_FUNC_SMBUS_READ_I2C_BLOCK)) { + dev_err(&client->dev, + "Adapter does not support some i2c transaction\n"); + return -ENODEV; + } + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*dev_data)); + if (!indio_dev) + return -ENOMEM; + + dev_data = iio_priv(indio_dev); + dev_data->client = client; + dev_data->res_index = 0; + mutex_init(&dev_data->lock); + + indio_dev->info = &htu21_info; + indio_dev->name = id->name; + indio_dev->dev.parent = &client->dev; + indio_dev->modes = INDIO_DIRECT_MODE; + + if (id->driver_data == MS8607) { + indio_dev->channels = ms8607_channels; + indio_dev->num_channels = ARRAY_SIZE(ms8607_channels); + } else { + indio_dev->channels = htu21_channels; + indio_dev->num_channels = ARRAY_SIZE(htu21_channels); + } + + i2c_set_clientdata(client, indio_dev); + + ret = ms_sensors_reset(client, HTU21_RESET, 15000); + if (ret) + return ret; + + ret = ms_sensors_read_serial(client, &serial_number); + if (ret) + return ret; + dev_info(&client->dev, "Serial number : %llx", serial_number); + + return devm_iio_device_register(&client->dev, indio_dev); +} + +static const struct i2c_device_id htu21_id[] = { + {"htu21", HTU21}, + {"ms8607-humidity", MS8607}, + {} +}; + +static struct i2c_driver htu21_driver = { + .probe = htu21_probe, + .id_table = htu21_id, + .driver = { + .name = "htu21", + }, +}; + +module_i2c_driver(htu21_driver); + +MODULE_DESCRIPTION("Measurement-Specialties htu21 temperature and humidity driver"); +MODULE_AUTHOR("William Markezana <william.markezana@meas-spec.com>"); +MODULE_AUTHOR("Ludovic Tancerel <ludovic.tancerel@maplehightech.com>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/humidity/si7020.c b/drivers/iio/humidity/si7020.c index fa3b809aff5e..12128d1ca570 100644 --- a/drivers/iio/humidity/si7020.c +++ b/drivers/iio/humidity/si7020.c @@ -57,8 +57,12 @@ static int si7020_read_raw(struct iio_dev *indio_dev, if (ret < 0) return ret; *val = ret >> 2; + /* + * Humidity values can slightly exceed the 0-100%RH + * range and should be corrected by software + */ if (chan->type == IIO_HUMIDITYRELATIVE) - *val &= GENMASK(11, 0); + *val = clamp_val(*val, 786, 13893); return IIO_VAL_INT; case IIO_CHAN_INFO_SCALE: if (chan->type == IIO_TEMP) diff --git a/drivers/iio/imu/adis16400_core.c b/drivers/iio/imu/adis16400_core.c index abc4c50de9e8..0618f831ecd4 100644 --- a/drivers/iio/imu/adis16400_core.c +++ b/drivers/iio/imu/adis16400_core.c @@ -986,7 +986,6 @@ MODULE_DEVICE_TABLE(spi, adis16400_id); static struct spi_driver adis16400_driver = { .driver = { .name = "adis16400", - .owner = THIS_MODULE, }, .id_table = adis16400_id, .probe = adis16400_probe, diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c index b94bfd3f595b..2485b88ee1b6 100644 --- a/drivers/iio/imu/adis16480.c +++ b/drivers/iio/imu/adis16480.c @@ -896,7 +896,6 @@ MODULE_DEVICE_TABLE(spi, adis16480_ids); static struct spi_driver adis16480_driver = { .driver = { .name = "adis16480", - .owner = THIS_MODULE, }, .id_table = adis16480_ids, .probe = adis16480_probe, diff --git a/drivers/iio/imu/kmx61.c b/drivers/iio/imu/kmx61.c index 82cdf5090fa7..dbf5e9936635 100644 --- a/drivers/iio/imu/kmx61.c +++ b/drivers/iio/imu/kmx61.c @@ -27,7 +27,6 @@ #include <linux/iio/trigger_consumer.h> #define KMX61_DRV_NAME "kmx61" -#define KMX61_GPIO_NAME "kmx61_int" #define KMX61_IRQ_NAME "kmx61_event" #define KMX61_REG_WHO_AM_I 0x00 @@ -1243,30 +1242,6 @@ static const char *kmx61_match_acpi_device(struct device *dev) return dev_name(dev); } -static int kmx61_gpio_probe(struct i2c_client *client, struct kmx61_data *data) -{ - struct device *dev; - struct gpio_desc *gpio; - int ret; - - if (!client) - return -EINVAL; - - dev = &client->dev; - - /* data ready gpio interrupt pin */ - gpio = devm_gpiod_get_index(dev, KMX61_GPIO_NAME, 0, GPIOD_IN); - if (IS_ERR(gpio)) { - dev_err(dev, "acpi gpio get index failed\n"); - return PTR_ERR(gpio); - } - - ret = gpiod_to_irq(gpio); - - dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret); - return ret; -} - static struct iio_dev *kmx61_indiodev_setup(struct kmx61_data *data, const struct iio_info *info, const struct iio_chan_spec *chan, @@ -1360,9 +1335,6 @@ static int kmx61_probe(struct i2c_client *client, if (ret < 0) return ret; - if (client->irq < 0) - client->irq = kmx61_gpio_probe(client, data); - if (client->irq > 0) { ret = devm_request_threaded_irq(&client->dev, client->irq, kmx61_data_rdy_trig_poll, diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index b3fcc2c449d8..208358f9e7e3 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -75,6 +75,8 @@ static const char * const iio_chan_type_name_spec[] = { [IIO_ENERGY] = "energy", [IIO_DISTANCE] = "distance", [IIO_VELOCITY] = "velocity", + [IIO_CONCENTRATION] = "concentration", + [IIO_RESISTANCE] = "resistance", }; static const char * const iio_modifier_names[] = { @@ -111,6 +113,8 @@ static const char * const iio_modifier_names[] = { [IIO_MOD_ROOT_SUM_SQUARED_X_Y_Z] = "sqrt(x^2+y^2+z^2)", [IIO_MOD_I] = "i", [IIO_MOD_Q] = "q", + [IIO_MOD_CO2] = "co2", + [IIO_MOD_VOC] = "voc", }; /* relies on pairs of these shared then separate */ @@ -962,7 +966,7 @@ static void iio_device_unregister_sysfs(struct iio_dev *indio_dev) static void iio_dev_release(struct device *device) { struct iio_dev *indio_dev = dev_to_iio_dev(device); - if (indio_dev->modes & INDIO_BUFFER_TRIGGERED) + if (indio_dev->modes & (INDIO_BUFFER_TRIGGERED | INDIO_EVENT_TRIGGERED)) iio_device_unregister_trigger_consumer(indio_dev); iio_device_unregister_eventset(indio_dev); iio_device_unregister_sysfs(indio_dev); @@ -1153,6 +1157,8 @@ static long iio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) if (cmd == IIO_GET_EVENT_FD_IOCTL) { fd = iio_event_getfd(indio_dev); + if (fd < 0) + return fd; if (copy_to_user(ip, &fd, sizeof(fd))) return -EFAULT; return 0; @@ -1241,7 +1247,7 @@ int iio_device_register(struct iio_dev *indio_dev) "Failed to register event set\n"); goto error_free_sysfs; } - if (indio_dev->modes & INDIO_BUFFER_TRIGGERED) + if (indio_dev->modes & (INDIO_BUFFER_TRIGGERED | INDIO_EVENT_TRIGGERED)) iio_device_register_trigger_consumer(indio_dev); if ((indio_dev->modes & INDIO_ALL_BUFFER_MODES) && diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c index 570606c2adbd..ae2806aafb72 100644 --- a/drivers/iio/industrialio-trigger.c +++ b/drivers/iio/industrialio-trigger.c @@ -366,10 +366,18 @@ static ssize_t iio_trigger_write_current(struct device *dev, indio_dev->trig = trig; - if (oldtrig) + if (oldtrig) { + if (indio_dev->modes & INDIO_EVENT_TRIGGERED) + iio_trigger_detach_poll_func(oldtrig, + indio_dev->pollfunc_event); iio_trigger_put(oldtrig); - if (indio_dev->trig) + } + if (indio_dev->trig) { iio_trigger_get(indio_dev->trig); + if (indio_dev->modes & INDIO_EVENT_TRIGGERED) + iio_trigger_attach_poll_func(indio_dev->trig, + indio_dev->pollfunc_event); + } return len; } diff --git a/drivers/iio/industrialio-triggered-event.c b/drivers/iio/industrialio-triggered-event.c new file mode 100644 index 000000000000..8cc254fac16a --- /dev/null +++ b/drivers/iio/industrialio-triggered-event.c @@ -0,0 +1,68 @@ +/* + * Copyright (C) 2015 Cogent Embedded, Inc. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ + +#include <linux/kernel.h> +#include <linux/export.h> +#include <linux/module.h> +#include <linux/iio/iio.h> +#include <linux/iio/triggered_event.h> +#include <linux/iio/trigger_consumer.h> + +/** + * iio_triggered_event_setup() - Setup pollfunc_event for triggered event + * @indio_dev: IIO device structure + * @h: Function which will be used as pollfunc_event top half + * @thread: Function which will be used as pollfunc_event bottom half + * + * This function combines some common tasks which will normally be performed + * when setting up a triggered event. It will allocate the pollfunc_event and + * set mode to use it for triggered event. + * + * Before calling this function the indio_dev structure should already be + * completely initialized, but not yet registered. In practice this means that + * this function should be called right before iio_device_register(). + * + * To free the resources allocated by this function call + * iio_triggered_event_cleanup(). + */ +int iio_triggered_event_setup(struct iio_dev *indio_dev, + irqreturn_t (*h)(int irq, void *p), + irqreturn_t (*thread)(int irq, void *p)) +{ + indio_dev->pollfunc_event = iio_alloc_pollfunc(h, + thread, + IRQF_ONESHOT, + indio_dev, + "%s_consumer%d", + indio_dev->name, + indio_dev->id); + if (indio_dev->pollfunc_event == NULL) + return -ENOMEM; + + /* Flag that events polling is possible */ + indio_dev->modes |= INDIO_EVENT_TRIGGERED; + + return 0; +} +EXPORT_SYMBOL(iio_triggered_event_setup); + +/** + * iio_triggered_event_cleanup() - Free resources allocated by iio_triggered_event_setup() + * @indio_dev: IIO device structure + */ +void iio_triggered_event_cleanup(struct iio_dev *indio_dev) +{ + indio_dev->modes &= ~INDIO_EVENT_TRIGGERED; + iio_dealloc_pollfunc(indio_dev->pollfunc_event); +} +EXPORT_SYMBOL(iio_triggered_event_cleanup); + +MODULE_AUTHOR("Vladimir Barinov"); +MODULE_DESCRIPTION("IIO helper functions for setting up triggered events"); +MODULE_LICENSE("GPL"); diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig index 7ed859a700c4..cfd3df8416bb 100644 --- a/drivers/iio/light/Kconfig +++ b/drivers/iio/light/Kconfig @@ -50,6 +50,19 @@ config APDS9300 To compile this driver as a module, choose M here: the module will be called apds9300. +config APDS9960 + tristate "Avago APDS9960 gesture/RGB/ALS/proximity sensor" + select REGMAP_I2C + select IIO_BUFFER + select IIO_KFIFO_BUF + depends on I2C + help + Say Y here to build I2C interface support for the Avago + APDS9960 gesture/RGB/ALS/proximity sensor. + + To compile this driver as a module, choose M here: the + module will be called apds9960 + config BH1750 tristate "ROHM BH1750 ambient light sensor" depends on I2C @@ -287,6 +300,16 @@ config TSL4531 To compile this driver as a module, choose M here: the module will be called tsl4531. +config US5182D + tristate "UPISEMI light and proximity sensor" + depends on I2C + help + If you say yes here you get support for the UPISEMI US5182D + ambient light and proximity sensor. + + This driver can also be built as a module. If so, the module + will be called us5182d. + config VCNL4000 tristate "VCNL4000 combined ALS and proximity sensor" depends on I2C diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile index 91c74c014b6f..b2c31053db0c 100644 --- a/drivers/iio/light/Makefile +++ b/drivers/iio/light/Makefile @@ -7,6 +7,7 @@ obj-$(CONFIG_ACPI_ALS) += acpi-als.o obj-$(CONFIG_ADJD_S311) += adjd_s311.o obj-$(CONFIG_AL3320A) += al3320a.o obj-$(CONFIG_APDS9300) += apds9300.o +obj-$(CONFIG_APDS9960) += apds9960.o obj-$(CONFIG_BH1750) += bh1750.o obj-$(CONFIG_CM32181) += cm32181.o obj-$(CONFIG_CM3232) += cm3232.o @@ -27,4 +28,5 @@ obj-$(CONFIG_STK3310) += stk3310.o obj-$(CONFIG_TCS3414) += tcs3414.o obj-$(CONFIG_TCS3472) += tcs3472.o obj-$(CONFIG_TSL4531) += tsl4531.o +obj-$(CONFIG_US5182D) += us5182d.o obj-$(CONFIG_VCNL4000) += vcnl4000.o diff --git a/drivers/iio/light/apds9960.c b/drivers/iio/light/apds9960.c new file mode 100644 index 000000000000..7d269ef9e062 --- /dev/null +++ b/drivers/iio/light/apds9960.c @@ -0,0 +1,1130 @@ +/* + * apds9960.c - Support for Avago APDS9960 gesture/RGB/ALS/proximity sensor + * + * Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * TODO: gesture + proximity calib offsets + */ + +#include <linux/module.h> +#include <linux/init.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/mutex.h> +#include <linux/err.h> +#include <linux/irq.h> +#include <linux/gpio.h> +#include <linux/i2c.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/iio/iio.h> +#include <linux/iio/buffer.h> +#include <linux/iio/events.h> +#include <linux/iio/kfifo_buf.h> +#include <linux/iio/sysfs.h> +#include <linux/of_gpio.h> + +#define APDS9960_REGMAP_NAME "apds9960_regmap" +#define APDS9960_DRV_NAME "apds9960" + +#define APDS9960_REG_RAM_START 0x00 +#define APDS9960_REG_RAM_END 0x7f + +#define APDS9960_REG_ENABLE 0x80 +#define APDS9960_REG_ATIME 0x81 +#define APDS9960_REG_WTIME 0x83 + +#define APDS9960_REG_AILTL 0x84 +#define APDS9960_REG_AILTH 0x85 +#define APDS9960_REG_AIHTL 0x86 +#define APDS9960_REG_AIHTH 0x87 + +#define APDS9960_REG_PILT 0x89 +#define APDS9960_REG_PIHT 0x8b +#define APDS9960_REG_PERS 0x8c + +#define APDS9960_REG_CONFIG_1 0x8d +#define APDS9960_REG_PPULSE 0x8e + +#define APDS9960_REG_CONTROL 0x8f +#define APDS9960_REG_CONTROL_AGAIN_MASK 0x03 +#define APDS9960_REG_CONTROL_PGAIN_MASK 0x0c +#define APDS9960_REG_CONTROL_AGAIN_MASK_SHIFT 0 +#define APDS9960_REG_CONTROL_PGAIN_MASK_SHIFT 2 + +#define APDS9960_REG_CONFIG_2 0x90 +#define APDS9960_REG_CONFIG_2_GGAIN_MASK 0x60 +#define APDS9960_REG_CONFIG_2_GGAIN_MASK_SHIFT 5 + +#define APDS9960_REG_ID 0x92 + +#define APDS9960_REG_STATUS 0x93 +#define APDS9960_REG_STATUS_PS_INT BIT(5) +#define APDS9960_REG_STATUS_ALS_INT BIT(4) +#define APDS9960_REG_STATUS_GINT BIT(2) + +#define APDS9960_REG_PDATA 0x9c +#define APDS9960_REG_POFFSET_UR 0x9d +#define APDS9960_REG_POFFSET_DL 0x9e +#define APDS9960_REG_CONFIG_3 0x9f + +#define APDS9960_REG_GPENTH 0xa0 +#define APDS9960_REG_GEXTH 0xa1 + +#define APDS9960_REG_GCONF_1 0xa2 +#define APDS9960_REG_GCONF_1_GFIFO_THRES_MASK 0xc0 +#define APDS9960_REG_GCONF_1_GFIFO_THRES_MASK_SHIFT 6 + +#define APDS9960_REG_GCONF_2 0xa3 +#define APDS9960_REG_GOFFSET_U 0xa4 +#define APDS9960_REG_GOFFSET_D 0xa5 +#define APDS9960_REG_GPULSE 0xa6 +#define APDS9960_REG_GOFFSET_L 0xa7 +#define APDS9960_REG_GOFFSET_R 0xa9 +#define APDS9960_REG_GCONF_3 0xaa + +#define APDS9960_REG_GCONF_4 0xab +#define APDS9960_REG_GFLVL 0xae +#define APDS9960_REG_GSTATUS 0xaf + +#define APDS9960_REG_IFORCE 0xe4 +#define APDS9960_REG_PICLEAR 0xe5 +#define APDS9960_REG_CICLEAR 0xe6 +#define APDS9960_REG_AICLEAR 0xe7 + +#define APDS9960_DEFAULT_PERS 0x33 +#define APDS9960_DEFAULT_GPENTH 0x50 +#define APDS9960_DEFAULT_GEXTH 0x40 + +#define APDS9960_MAX_PXS_THRES_VAL 255 +#define APDS9960_MAX_ALS_THRES_VAL 0xffff +#define APDS9960_MAX_INT_TIME_IN_US 1000000 + +enum apds9960_als_channel_idx { + IDX_ALS_CLEAR, IDX_ALS_RED, IDX_ALS_GREEN, IDX_ALS_BLUE, +}; + +#define APDS9960_REG_ALS_BASE 0x94 +#define APDS9960_REG_ALS_CHANNEL(_colour) \ + (APDS9960_REG_ALS_BASE + (IDX_ALS_##_colour * 2)) + +enum apds9960_gesture_channel_idx { + IDX_DIR_UP, IDX_DIR_DOWN, IDX_DIR_LEFT, IDX_DIR_RIGHT, +}; + +#define APDS9960_REG_GFIFO_BASE 0xfc +#define APDS9960_REG_GFIFO_DIR(_dir) \ + (APDS9960_REG_GFIFO_BASE + IDX_DIR_##_dir) + +struct apds9960_data { + struct i2c_client *client; + struct iio_dev *indio_dev; + struct mutex lock; + + /* regmap fields */ + struct regmap *regmap; + struct regmap_field *reg_int_als; + struct regmap_field *reg_int_ges; + struct regmap_field *reg_int_pxs; + + struct regmap_field *reg_enable_als; + struct regmap_field *reg_enable_ges; + struct regmap_field *reg_enable_pxs; + + /* state */ + int als_int; + int pxs_int; + int gesture_mode_running; + + /* gain values */ + int als_gain; + int pxs_gain; + + /* integration time value in us */ + int als_adc_int_us; + + /* gesture buffer */ + u8 buffer[4]; /* 4 8-bit channels */ +}; + +static const struct reg_default apds9960_reg_defaults[] = { + /* Default ALS integration time = 2.48ms */ + { APDS9960_REG_ATIME, 0xff }, +}; + +static const struct regmap_range apds9960_volatile_ranges[] = { + regmap_reg_range(APDS9960_REG_STATUS, + APDS9960_REG_PDATA), + regmap_reg_range(APDS9960_REG_GFLVL, + APDS9960_REG_GSTATUS), + regmap_reg_range(APDS9960_REG_GFIFO_DIR(UP), + APDS9960_REG_GFIFO_DIR(RIGHT)), + regmap_reg_range(APDS9960_REG_IFORCE, + APDS9960_REG_AICLEAR), +}; + +static const struct regmap_access_table apds9960_volatile_table = { + .yes_ranges = apds9960_volatile_ranges, + .n_yes_ranges = ARRAY_SIZE(apds9960_volatile_ranges), +}; + +static const struct regmap_range apds9960_precious_ranges[] = { + regmap_reg_range(APDS9960_REG_RAM_START, APDS9960_REG_RAM_END), +}; + +static const struct regmap_access_table apds9960_precious_table = { + .yes_ranges = apds9960_precious_ranges, + .n_yes_ranges = ARRAY_SIZE(apds9960_precious_ranges), +}; + +static const struct regmap_range apds9960_readable_ranges[] = { + regmap_reg_range(APDS9960_REG_ENABLE, + APDS9960_REG_GSTATUS), + regmap_reg_range(APDS9960_REG_GFIFO_DIR(UP), + APDS9960_REG_GFIFO_DIR(RIGHT)), +}; + +static const struct regmap_access_table apds9960_readable_table = { + .yes_ranges = apds9960_readable_ranges, + .n_yes_ranges = ARRAY_SIZE(apds9960_readable_ranges), +}; + +static const struct regmap_range apds9960_writeable_ranges[] = { + regmap_reg_range(APDS9960_REG_ENABLE, APDS9960_REG_CONFIG_2), + regmap_reg_range(APDS9960_REG_POFFSET_UR, APDS9960_REG_GCONF_4), + regmap_reg_range(APDS9960_REG_IFORCE, APDS9960_REG_AICLEAR), +}; + +static const struct regmap_access_table apds9960_writeable_table = { + .yes_ranges = apds9960_writeable_ranges, + .n_yes_ranges = ARRAY_SIZE(apds9960_writeable_ranges), +}; + +static const struct regmap_config apds9960_regmap_config = { + .name = APDS9960_REGMAP_NAME, + .reg_bits = 8, + .val_bits = 8, + .use_single_rw = 1, + + .volatile_table = &apds9960_volatile_table, + .precious_table = &apds9960_precious_table, + .rd_table = &apds9960_readable_table, + .wr_table = &apds9960_writeable_table, + + .reg_defaults = apds9960_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(apds9960_reg_defaults), + .max_register = APDS9960_REG_GFIFO_DIR(RIGHT), + .cache_type = REGCACHE_RBTREE, +}; + +static const struct iio_event_spec apds9960_pxs_event_spec[] = { + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_RISING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_FALLING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, +}; + +static const struct iio_event_spec apds9960_als_event_spec[] = { + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_RISING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, + { + .type = IIO_EV_TYPE_THRESH, + .dir = IIO_EV_DIR_FALLING, + .mask_separate = BIT(IIO_EV_INFO_VALUE) | + BIT(IIO_EV_INFO_ENABLE), + }, +}; + +#define APDS9960_GESTURE_CHANNEL(_dir, _si) { \ + .type = IIO_PROXIMITY, \ + .channel = _si + 1, \ + .scan_index = _si, \ + .indexed = 1, \ + .scan_type = { \ + .sign = 'u', \ + .realbits = 8, \ + .storagebits = 8, \ + }, \ +} + +#define APDS9960_INTENSITY_CHANNEL(_colour) { \ + .type = IIO_INTENSITY, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ + BIT(IIO_CHAN_INFO_INT_TIME), \ + .channel2 = IIO_MOD_LIGHT_##_colour, \ + .address = APDS9960_REG_ALS_CHANNEL(_colour), \ + .modified = 1, \ + .scan_index = -1, \ +} + +static const unsigned long apds9960_scan_masks[] = {0xf, 0}; + +static const struct iio_chan_spec apds9960_channels[] = { + { + .type = IIO_PROXIMITY, + .address = APDS9960_REG_PDATA, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), + .channel = 0, + .indexed = 0, + .scan_index = -1, + + .event_spec = apds9960_pxs_event_spec, + .num_event_specs = ARRAY_SIZE(apds9960_pxs_event_spec), + }, + /* Gesture Sensor */ + APDS9960_GESTURE_CHANNEL(UP, 0), + APDS9960_GESTURE_CHANNEL(DOWN, 1), + APDS9960_GESTURE_CHANNEL(LEFT, 2), + APDS9960_GESTURE_CHANNEL(RIGHT, 3), + /* ALS */ + { + .type = IIO_INTENSITY, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | + BIT(IIO_CHAN_INFO_INT_TIME), + .channel2 = IIO_MOD_LIGHT_CLEAR, + .address = APDS9960_REG_ALS_CHANNEL(CLEAR), + .modified = 1, + .scan_index = -1, + + .event_spec = apds9960_als_event_spec, + .num_event_specs = ARRAY_SIZE(apds9960_als_event_spec), + }, + /* RGB Sensor */ + APDS9960_INTENSITY_CHANNEL(RED), + APDS9960_INTENSITY_CHANNEL(GREEN), + APDS9960_INTENSITY_CHANNEL(BLUE), +}; + +/* integration time in us */ +static const int apds9960_int_time[][2] = + { {28000, 246}, {100000, 219}, {200000, 182}, {700000, 0} }; + +/* gain mapping */ +static const int apds9960_pxs_gain_map[] = {1, 2, 4, 8}; +static const int apds9960_als_gain_map[] = {1, 4, 16, 64}; + +static IIO_CONST_ATTR(proximity_scale_available, "1 2 4 8"); +static IIO_CONST_ATTR(intensity_scale_available, "1 4 16 64"); +static IIO_CONST_ATTR_INT_TIME_AVAIL("0.028 0.1 0.2 0.7"); + +static struct attribute *apds9960_attributes[] = { + &iio_const_attr_proximity_scale_available.dev_attr.attr, + &iio_const_attr_intensity_scale_available.dev_attr.attr, + &iio_const_attr_integration_time_available.dev_attr.attr, + NULL, +}; + +static struct attribute_group apds9960_attribute_group = { + .attrs = apds9960_attributes, +}; + +static const struct reg_field apds9960_reg_field_int_als = + REG_FIELD(APDS9960_REG_ENABLE, 4, 4); + +static const struct reg_field apds9960_reg_field_int_ges = + REG_FIELD(APDS9960_REG_GCONF_4, 1, 1); + +static const struct reg_field apds9960_reg_field_int_pxs = + REG_FIELD(APDS9960_REG_ENABLE, 5, 5); + +static const struct reg_field apds9960_reg_field_enable_als = + REG_FIELD(APDS9960_REG_ENABLE, 1, 1); + +static const struct reg_field apds9960_reg_field_enable_ges = + REG_FIELD(APDS9960_REG_ENABLE, 6, 6); + +static const struct reg_field apds9960_reg_field_enable_pxs = + REG_FIELD(APDS9960_REG_ENABLE, 2, 2); + +static int apds9960_set_it_time(struct apds9960_data *data, int val2) +{ + int ret = -EINVAL; + int idx; + + for (idx = 0; idx < ARRAY_SIZE(apds9960_int_time); idx++) { + if (apds9960_int_time[idx][0] == val2) { + mutex_lock(&data->lock); + ret = regmap_write(data->regmap, APDS9960_REG_ATIME, + apds9960_int_time[idx][1]); + if (!ret) + data->als_adc_int_us = val2; + mutex_unlock(&data->lock); + break; + } + } + + return ret; +} + +static int apds9960_set_pxs_gain(struct apds9960_data *data, int val) +{ + int ret = -EINVAL; + int idx; + + for (idx = 0; idx < ARRAY_SIZE(apds9960_pxs_gain_map); idx++) { + if (apds9960_pxs_gain_map[idx] == val) { + /* pxs + gesture gains are mirrored */ + mutex_lock(&data->lock); + ret = regmap_update_bits(data->regmap, + APDS9960_REG_CONTROL, + APDS9960_REG_CONTROL_PGAIN_MASK, + idx << APDS9960_REG_CONTROL_PGAIN_MASK_SHIFT); + if (ret) { + mutex_unlock(&data->lock); + break; + } + + ret = regmap_update_bits(data->regmap, + APDS9960_REG_CONFIG_2, + APDS9960_REG_CONFIG_2_GGAIN_MASK, + idx << APDS9960_REG_CONFIG_2_GGAIN_MASK_SHIFT); + if (!ret) + data->pxs_gain = idx; + mutex_unlock(&data->lock); + break; + } + } + + return ret; +} + +static int apds9960_set_als_gain(struct apds9960_data *data, int val) +{ + int ret = -EINVAL; + int idx; + + for (idx = 0; idx < ARRAY_SIZE(apds9960_als_gain_map); idx++) { + if (apds9960_als_gain_map[idx] == val) { + mutex_lock(&data->lock); + ret = regmap_update_bits(data->regmap, + APDS9960_REG_CONTROL, + APDS9960_REG_CONTROL_AGAIN_MASK, idx); + if (!ret) + data->als_gain = idx; + mutex_unlock(&data->lock); + break; + } + } + + return ret; +} + +#ifdef CONFIG_PM +static int apds9960_set_power_state(struct apds9960_data *data, bool on) +{ + struct device *dev = &data->client->dev; + int ret = 0; + + mutex_lock(&data->lock); + + if (on) { + int suspended; + + suspended = pm_runtime_suspended(dev); + ret = pm_runtime_get_sync(dev); + + /* Allow one integration cycle before allowing a reading */ + if (suspended) + usleep_range(data->als_adc_int_us, + APDS9960_MAX_INT_TIME_IN_US); + } else { + ret = pm_runtime_put_autosuspend(dev); + } + + mutex_unlock(&data->lock); + + return ret; +} +#else +static int apds9960_set_power_state(struct apds9960_data *data, bool on) +{ + return 0; +} +#endif + +static int apds9960_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct apds9960_data *data = iio_priv(indio_dev); + __le16 buf; + int ret = -EINVAL; + + if (data->gesture_mode_running) + return -EBUSY; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + apds9960_set_power_state(data, true); + switch (chan->type) { + case IIO_PROXIMITY: + ret = regmap_read(data->regmap, chan->address, val); + if (!ret) + ret = IIO_VAL_INT; + break; + case IIO_INTENSITY: + ret = regmap_bulk_read(data->regmap, chan->address, + &buf, 2); + if (!ret) + ret = IIO_VAL_INT; + *val = le16_to_cpu(buf); + break; + default: + ret = -EINVAL; + } + apds9960_set_power_state(data, false); + break; + case IIO_CHAN_INFO_INT_TIME: + /* RGB + ALS sensors only have integration time */ + mutex_lock(&data->lock); + switch (chan->type) { + case IIO_INTENSITY: + *val = 0; + *val2 = data->als_adc_int_us; + ret = IIO_VAL_INT_PLUS_MICRO; + break; + default: + ret = -EINVAL; + } + mutex_unlock(&data->lock); + break; + case IIO_CHAN_INFO_SCALE: + mutex_lock(&data->lock); + switch (chan->type) { + case IIO_PROXIMITY: + *val = apds9960_pxs_gain_map[data->pxs_gain]; + ret = IIO_VAL_INT; + break; + case IIO_INTENSITY: + *val = apds9960_als_gain_map[data->als_gain]; + ret = IIO_VAL_INT; + break; + default: + ret = -EINVAL; + } + mutex_unlock(&data->lock); + break; + } + + return ret; +}; + +static int apds9960_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct apds9960_data *data = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_INT_TIME: + /* RGB + ALS sensors only have int time */ + switch (chan->type) { + case IIO_INTENSITY: + if (val != 0) + return -EINVAL; + return apds9960_set_it_time(data, val2); + default: + return -EINVAL; + } + case IIO_CHAN_INFO_SCALE: + if (val2 != 0) + return -EINVAL; + switch (chan->type) { + case IIO_PROXIMITY: + return apds9960_set_pxs_gain(data, val); + case IIO_INTENSITY: + return apds9960_set_als_gain(data, val); + default: + return -EINVAL; + } + default: + return -EINVAL; + }; + + return 0; +} + +static inline int apds9960_get_thres_reg(const struct iio_chan_spec *chan, + enum iio_event_direction dir, + u8 *reg) +{ + switch (dir) { + case IIO_EV_DIR_RISING: + switch (chan->type) { + case IIO_PROXIMITY: + *reg = APDS9960_REG_PIHT; + break; + case IIO_INTENSITY: + *reg = APDS9960_REG_AIHTL; + break; + default: + return -EINVAL; + } + break; + case IIO_EV_DIR_FALLING: + switch (chan->type) { + case IIO_PROXIMITY: + *reg = APDS9960_REG_PILT; + break; + case IIO_INTENSITY: + *reg = APDS9960_REG_AILTL; + break; + default: + return -EINVAL; + } + break; + default: + return -EINVAL; + } + + return 0; +} + +static int apds9960_read_event(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, + int *val, int *val2) +{ + u8 reg; + __le16 buf; + int ret = 0; + struct apds9960_data *data = iio_priv(indio_dev); + + if (info != IIO_EV_INFO_VALUE) + return -EINVAL; + + ret = apds9960_get_thres_reg(chan, dir, ®); + if (ret < 0) + return ret; + + if (chan->type == IIO_PROXIMITY) { + ret = regmap_read(data->regmap, reg, val); + if (ret < 0) + return ret; + } else if (chan->type == IIO_INTENSITY) { + ret = regmap_bulk_read(data->regmap, reg, &buf, 2); + if (ret < 0) + return ret; + *val = le16_to_cpu(buf); + } else + return -EINVAL; + + *val2 = 0; + + return IIO_VAL_INT; +} + +static int apds9960_write_event(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + enum iio_event_info info, + int val, int val2) +{ + u8 reg; + __le16 buf; + int ret = 0; + struct apds9960_data *data = iio_priv(indio_dev); + + if (info != IIO_EV_INFO_VALUE) + return -EINVAL; + + ret = apds9960_get_thres_reg(chan, dir, ®); + if (ret < 0) + return ret; + + if (chan->type == IIO_PROXIMITY) { + if (val < 0 || val > APDS9960_MAX_PXS_THRES_VAL) + return -EINVAL; + ret = regmap_write(data->regmap, reg, val); + if (ret < 0) + return ret; + } else if (chan->type == IIO_INTENSITY) { + if (val < 0 || val > APDS9960_MAX_ALS_THRES_VAL) + return -EINVAL; + buf = cpu_to_le16(val); + ret = regmap_bulk_write(data->regmap, reg, &buf, 2); + if (ret < 0) + return ret; + } else + return -EINVAL; + + return 0; +} + +static int apds9960_read_event_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir) +{ + struct apds9960_data *data = iio_priv(indio_dev); + + switch (chan->type) { + case IIO_PROXIMITY: + return data->pxs_int; + case IIO_INTENSITY: + return data->als_int; + default: + return -EINVAL; + } + + return 0; +} + +static int apds9960_write_event_config(struct iio_dev *indio_dev, + const struct iio_chan_spec *chan, + enum iio_event_type type, + enum iio_event_direction dir, + int state) +{ + struct apds9960_data *data = iio_priv(indio_dev); + int ret; + + state = !!state; + + switch (chan->type) { + case IIO_PROXIMITY: + if (data->pxs_int == state) + return -EINVAL; + + ret = regmap_field_write(data->reg_int_pxs, state); + if (ret) + return ret; + data->pxs_int = state; + apds9960_set_power_state(data, state); + break; + case IIO_INTENSITY: + if (data->als_int == state) + return -EINVAL; + + ret = regmap_field_write(data->reg_int_als, state); + if (ret) + return ret; + data->als_int = state; + apds9960_set_power_state(data, state); + break; + default: + return -EINVAL; + } + + return 0; +} + +static const struct iio_info apds9960_info = { + .driver_module = THIS_MODULE, + .attrs = &apds9960_attribute_group, + .read_raw = apds9960_read_raw, + .write_raw = apds9960_write_raw, + .read_event_value = apds9960_read_event, + .write_event_value = apds9960_write_event, + .read_event_config = apds9960_read_event_config, + .write_event_config = apds9960_write_event_config, + +}; + +static inline int apds9660_fifo_is_empty(struct apds9960_data *data) +{ + int cnt; + int ret; + + ret = regmap_read(data->regmap, APDS9960_REG_GFLVL, &cnt); + if (ret) + return ret; + + return cnt; +} + +static void apds9960_read_gesture_fifo(struct apds9960_data *data) +{ + int ret, cnt = 0; + + mutex_lock(&data->lock); + data->gesture_mode_running = 1; + + while (cnt-- || (cnt = apds9660_fifo_is_empty(data) > 0)) { + ret = regmap_bulk_read(data->regmap, APDS9960_REG_GFIFO_BASE, + &data->buffer, 4); + + if (ret) + goto err_read; + + iio_push_to_buffers(data->indio_dev, data->buffer); + } + +err_read: + data->gesture_mode_running = 0; + mutex_unlock(&data->lock); +} + +static irqreturn_t apds9960_interrupt_handler(int irq, void *private) +{ + struct iio_dev *indio_dev = private; + struct apds9960_data *data = iio_priv(indio_dev); + int ret, status; + + ret = regmap_read(data->regmap, APDS9960_REG_STATUS, &status); + if (ret < 0) { + dev_err(&data->client->dev, "irq status reg read failed\n"); + return IRQ_HANDLED; + } + + if ((status & APDS9960_REG_STATUS_ALS_INT) && data->als_int) { + iio_push_event(indio_dev, + IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0, + IIO_EV_TYPE_THRESH, + IIO_EV_DIR_EITHER), + iio_get_time_ns()); + regmap_write(data->regmap, APDS9960_REG_CICLEAR, 1); + } + + if ((status & APDS9960_REG_STATUS_PS_INT) && data->pxs_int) { + iio_push_event(indio_dev, + IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0, + IIO_EV_TYPE_THRESH, + IIO_EV_DIR_EITHER), + iio_get_time_ns()); + regmap_write(data->regmap, APDS9960_REG_PICLEAR, 1); + } + + if (status & APDS9960_REG_STATUS_GINT) + apds9960_read_gesture_fifo(data); + + return IRQ_HANDLED; +} + +static int apds9960_set_powermode(struct apds9960_data *data, bool state) +{ + return regmap_update_bits(data->regmap, APDS9960_REG_ENABLE, 1, state); +} + +static int apds9960_buffer_postenable(struct iio_dev *indio_dev) +{ + struct apds9960_data *data = iio_priv(indio_dev); + int ret; + + ret = regmap_field_write(data->reg_int_ges, 1); + if (ret) + return ret; + + ret = regmap_field_write(data->reg_enable_ges, 1); + if (ret) + return ret; + + pm_runtime_get_sync(&data->client->dev); + + return 0; +} + +static int apds9960_buffer_predisable(struct iio_dev *indio_dev) +{ + struct apds9960_data *data = iio_priv(indio_dev); + int ret; + + ret = regmap_field_write(data->reg_enable_ges, 0); + if (ret) + return ret; + + ret = regmap_field_write(data->reg_int_ges, 0); + if (ret) + return ret; + + pm_runtime_put_autosuspend(&data->client->dev); + + return 0; +} + +static const struct iio_buffer_setup_ops apds9960_buffer_setup_ops = { + .postenable = apds9960_buffer_postenable, + .predisable = apds9960_buffer_predisable, +}; + +static int apds9960_regfield_init(struct apds9960_data *data) +{ + struct device *dev = &data->client->dev; + struct regmap *regmap = data->regmap; + + data->reg_int_als = devm_regmap_field_alloc(dev, regmap, + apds9960_reg_field_int_als); + if (IS_ERR(data->reg_int_als)) { + dev_err(dev, "INT ALS reg field init failed\n"); + return PTR_ERR(data->reg_int_als); + } + + data->reg_int_ges = devm_regmap_field_alloc(dev, regmap, + apds9960_reg_field_int_ges); + if (IS_ERR(data->reg_int_ges)) { + dev_err(dev, "INT gesture reg field init failed\n"); + return PTR_ERR(data->reg_int_ges); + } + + data->reg_int_pxs = devm_regmap_field_alloc(dev, regmap, + apds9960_reg_field_int_pxs); + if (IS_ERR(data->reg_int_pxs)) { + dev_err(dev, "INT pxs reg field init failed\n"); + return PTR_ERR(data->reg_int_pxs); + } + + data->reg_enable_als = devm_regmap_field_alloc(dev, regmap, + apds9960_reg_field_enable_als); + if (IS_ERR(data->reg_enable_als)) { + dev_err(dev, "Enable ALS reg field init failed\n"); + return PTR_ERR(data->reg_enable_als); + } + + data->reg_enable_ges = devm_regmap_field_alloc(dev, regmap, + apds9960_reg_field_enable_ges); + if (IS_ERR(data->reg_enable_ges)) { + dev_err(dev, "Enable gesture reg field init failed\n"); + return PTR_ERR(data->reg_enable_ges); + } + + data->reg_enable_pxs = devm_regmap_field_alloc(dev, regmap, + apds9960_reg_field_enable_pxs); + if (IS_ERR(data->reg_enable_pxs)) { + dev_err(dev, "Enable PXS reg field init failed\n"); + return PTR_ERR(data->reg_enable_pxs); + } + + return 0; +} + +static int apds9960_chip_init(struct apds9960_data *data) +{ + int ret; + + /* Default IT for ALS of 28 ms */ + ret = apds9960_set_it_time(data, 28000); + if (ret) + return ret; + + /* Ensure gesture interrupt is OFF */ + ret = regmap_field_write(data->reg_int_ges, 0); + if (ret) + return ret; + + /* Disable gesture sensor, since polling is useless from user-space */ + ret = regmap_field_write(data->reg_enable_ges, 0); + if (ret) + return ret; + + /* Ensure proximity interrupt is OFF */ + ret = regmap_field_write(data->reg_int_pxs, 0); + if (ret) + return ret; + + /* Enable proximity sensor for polling */ + ret = regmap_field_write(data->reg_enable_pxs, 1); + if (ret) + return ret; + + /* Ensure ALS interrupt is OFF */ + ret = regmap_field_write(data->reg_int_als, 0); + if (ret) + return ret; + + /* Enable ALS sensor for polling */ + ret = regmap_field_write(data->reg_enable_als, 1); + if (ret) + return ret; + /* + * When enabled trigger an interrupt after 3 readings + * outside threshold for ALS + PXS + */ + ret = regmap_write(data->regmap, APDS9960_REG_PERS, + APDS9960_DEFAULT_PERS); + if (ret) + return ret; + + /* + * Wait for 4 event outside gesture threshold to prevent interrupt + * flooding. + */ + ret = regmap_update_bits(data->regmap, APDS9960_REG_GCONF_1, + APDS9960_REG_GCONF_1_GFIFO_THRES_MASK, + BIT(0) << APDS9960_REG_GCONF_1_GFIFO_THRES_MASK_SHIFT); + if (ret) + return ret; + + /* Default ENTER and EXIT thresholds for the GESTURE engine. */ + ret = regmap_write(data->regmap, APDS9960_REG_GPENTH, + APDS9960_DEFAULT_GPENTH); + if (ret) + return ret; + + ret = regmap_write(data->regmap, APDS9960_REG_GEXTH, + APDS9960_DEFAULT_GEXTH); + if (ret) + return ret; + + return apds9960_set_powermode(data, 1); +} + +static int apds9960_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct apds9960_data *data; + struct iio_buffer *buffer; + struct iio_dev *indio_dev; + int ret; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + buffer = devm_iio_kfifo_allocate(&client->dev); + if (!buffer) + return -ENOMEM; + + iio_device_attach_buffer(indio_dev, buffer); + + indio_dev->info = &apds9960_info; + indio_dev->name = APDS9960_DRV_NAME; + indio_dev->channels = apds9960_channels; + indio_dev->num_channels = ARRAY_SIZE(apds9960_channels); + indio_dev->available_scan_masks = apds9960_scan_masks; + indio_dev->modes = (INDIO_BUFFER_SOFTWARE | INDIO_DIRECT_MODE); + indio_dev->setup_ops = &apds9960_buffer_setup_ops; + + data = iio_priv(indio_dev); + i2c_set_clientdata(client, indio_dev); + + data->regmap = devm_regmap_init_i2c(client, &apds9960_regmap_config); + if (IS_ERR(data->regmap)) { + dev_err(&client->dev, "regmap initialization failed.\n"); + return PTR_ERR(data->regmap); + } + + data->client = client; + data->indio_dev = indio_dev; + mutex_init(&data->lock); + + ret = pm_runtime_set_active(&client->dev); + if (ret) + goto error_power_down; + + pm_runtime_enable(&client->dev); + pm_runtime_set_autosuspend_delay(&client->dev, 5000); + pm_runtime_use_autosuspend(&client->dev); + + apds9960_set_power_state(data, true); + + ret = apds9960_regfield_init(data); + if (ret) + goto error_power_down; + + ret = apds9960_chip_init(data); + if (ret) + goto error_power_down; + + if (client->irq <= 0) { + dev_err(&client->dev, "no valid irq defined\n"); + ret = -EINVAL; + goto error_power_down; + } + ret = devm_request_threaded_irq(&client->dev, client->irq, + NULL, apds9960_interrupt_handler, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT, + "apds9960_event", + indio_dev); + if (ret) { + dev_err(&client->dev, "request irq (%d) failed\n", client->irq); + goto error_power_down; + } + + ret = iio_device_register(indio_dev); + if (ret) + goto error_power_down; + + apds9960_set_power_state(data, false); + + return 0; + +error_power_down: + apds9960_set_power_state(data, false); + + return ret; +} + +static int apds9960_remove(struct i2c_client *client) +{ + struct iio_dev *indio_dev = i2c_get_clientdata(client); + struct apds9960_data *data = iio_priv(indio_dev); + + iio_device_unregister(indio_dev); + pm_runtime_disable(&client->dev); + pm_runtime_set_suspended(&client->dev); + apds9960_set_powermode(data, 0); + + return 0; +} + +#ifdef CONFIG_PM +static int apds9960_runtime_suspend(struct device *dev) +{ + struct apds9960_data *data = + iio_priv(i2c_get_clientdata(to_i2c_client(dev))); + + return apds9960_set_powermode(data, 0); +} + +static int apds9960_runtime_resume(struct device *dev) +{ + struct apds9960_data *data = + iio_priv(i2c_get_clientdata(to_i2c_client(dev))); + + return apds9960_set_powermode(data, 1); +} +#endif + +static const struct dev_pm_ops apds9960_pm_ops = { + SET_RUNTIME_PM_OPS(apds9960_runtime_suspend, + apds9960_runtime_resume, NULL) +}; + +static const struct i2c_device_id apds9960_id[] = { + { "apds9960", 0 }, + {} +}; +MODULE_DEVICE_TABLE(i2c, apds9960_id); + +static struct i2c_driver apds9960_driver = { + .driver = { + .name = APDS9960_DRV_NAME, + .pm = &apds9960_pm_ops, + }, + .probe = apds9960_probe, + .remove = apds9960_remove, + .id_table = apds9960_id, +}; +module_i2c_driver(apds9960_driver); + +MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>"); +MODULE_DESCRIPTION("ADPS9960 Gesture/RGB/ALS/Proximity sensor"); +MODULE_LICENSE("GPL"); diff --git a/drivers/iio/light/opt3001.c b/drivers/iio/light/opt3001.c index 923aa6aef0ed..01e111e72d4b 100644 --- a/drivers/iio/light/opt3001.c +++ b/drivers/iio/light/opt3001.c @@ -793,7 +793,6 @@ static struct i2c_driver opt3001_driver = { .driver = { .name = "opt3001", .of_match_table = of_match_ptr(opt3001_of_match), - .owner = THIS_MODULE, }, }; diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c index 993eb201148e..42d334ba612e 100644 --- a/drivers/iio/light/stk3310.c +++ b/drivers/iio/light/stk3310.c @@ -35,8 +35,8 @@ #define STK3310_REG_ID 0x3E #define STK3310_MAX_REG 0x80 -#define STK3310_STATE_EN_PS 0x01 -#define STK3310_STATE_EN_ALS 0x02 +#define STK3310_STATE_EN_PS BIT(0) +#define STK3310_STATE_EN_ALS BIT(1) #define STK3310_STATE_STANDBY 0x00 #define STK3310_CHIP_ID_VAL 0x13 @@ -47,7 +47,6 @@ #define STK3310_DRIVER_NAME "stk3310" #define STK3310_REGMAP_NAME "stk3310_regmap" #define STK3310_EVENT "stk3310_event" -#define STK3310_GPIO "stk3310_gpio" #define STK3310_SCALE_AVAILABLE "6.4 1.6 0.4 0.1" @@ -241,8 +240,11 @@ static int stk3310_write_event(struct iio_dev *indio_dev, struct stk3310_data *data = iio_priv(indio_dev); struct i2c_client *client = data->client; - regmap_field_read(data->reg_ps_gain, &index); - if (val > stk3310_ps_max[index]) + ret = regmap_field_read(data->reg_ps_gain, &index); + if (ret < 0) + return ret; + + if (val < 0 || val > stk3310_ps_max[index]) return -EINVAL; if (dir == IIO_EV_DIR_RISING) @@ -266,9 +268,12 @@ static int stk3310_read_event_config(struct iio_dev *indio_dev, enum iio_event_direction dir) { unsigned int event_val; + int ret; struct stk3310_data *data = iio_priv(indio_dev); - regmap_field_read(data->reg_int_ps, &event_val); + ret = regmap_field_read(data->reg_int_ps, &event_val); + if (ret < 0) + return ret; return event_val; } @@ -307,14 +312,16 @@ static int stk3310_read_raw(struct iio_dev *indio_dev, struct stk3310_data *data = iio_priv(indio_dev); struct i2c_client *client = data->client; + if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY) + return -EINVAL; + switch (mask) { case IIO_CHAN_INFO_RAW: if (chan->type == IIO_LIGHT) reg = STK3310_REG_ALS_DATA_MSB; - else if (chan->type == IIO_PROXIMITY) - reg = STK3310_REG_PS_DATA_MSB; else - return -EINVAL; + reg = STK3310_REG_PS_DATA_MSB; + mutex_lock(&data->lock); ret = regmap_bulk_read(data->regmap, reg, &buf, 2); if (ret < 0) { @@ -327,17 +334,23 @@ static int stk3310_read_raw(struct iio_dev *indio_dev, return IIO_VAL_INT; case IIO_CHAN_INFO_INT_TIME: if (chan->type == IIO_LIGHT) - regmap_field_read(data->reg_als_it, &index); + ret = regmap_field_read(data->reg_als_it, &index); else - regmap_field_read(data->reg_ps_it, &index); + ret = regmap_field_read(data->reg_ps_it, &index); + if (ret < 0) + return ret; + *val = stk3310_it_table[index][0]; *val2 = stk3310_it_table[index][1]; return IIO_VAL_INT_PLUS_MICRO; case IIO_CHAN_INFO_SCALE: if (chan->type == IIO_LIGHT) - regmap_field_read(data->reg_als_gain, &index); + ret = regmap_field_read(data->reg_als_gain, &index); else - regmap_field_read(data->reg_ps_gain, &index); + ret = regmap_field_read(data->reg_ps_gain, &index); + if (ret < 0) + return ret; + *val = stk3310_scale_table[index][0]; *val2 = stk3310_scale_table[index][1]; return IIO_VAL_INT_PLUS_MICRO; @@ -354,6 +367,9 @@ static int stk3310_write_raw(struct iio_dev *indio_dev, int index; struct stk3310_data *data = iio_priv(indio_dev); + if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY) + return -EINVAL; + switch (mask) { case IIO_CHAN_INFO_INT_TIME: index = stk3310_get_index(stk3310_it_table, @@ -368,7 +384,7 @@ static int stk3310_write_raw(struct iio_dev *indio_dev, ret = regmap_field_write(data->reg_ps_it, index); if (ret < 0) dev_err(&data->client->dev, - "sensor configuration failed\n"); + "sensor configuration failed\n"); mutex_unlock(&data->lock); return ret; @@ -385,7 +401,7 @@ static int stk3310_write_raw(struct iio_dev *indio_dev, ret = regmap_field_write(data->reg_ps_gain, index); if (ret < 0) dev_err(&data->client->dev, - "sensor configuration failed\n"); + "sensor configuration failed\n"); mutex_unlock(&data->lock); return ret; } @@ -419,8 +435,8 @@ static int stk3310_set_state(struct stk3310_data *data, u8 state) dev_err(&client->dev, "failed to change sensor state\n"); } else if (state != STK3310_STATE_STANDBY) { /* Don't reset the 'enabled' flags if we're going in standby */ - data->ps_enabled = !!(state & 0x01); - data->als_enabled = !!(state & 0x02); + data->ps_enabled = !!(state & STK3310_STATE_EN_PS); + data->als_enabled = !!(state & STK3310_STATE_EN_ALS); } mutex_unlock(&data->lock); @@ -435,7 +451,10 @@ static int stk3310_init(struct iio_dev *indio_dev) struct stk3310_data *data = iio_priv(indio_dev); struct i2c_client *client = data->client; - regmap_read(data->regmap, STK3310_REG_ID, &chipid); + ret = regmap_read(data->regmap, STK3310_REG_ID, &chipid); + if (ret < 0) + return ret; + if (chipid != STK3310_CHIP_ID_VAL && chipid != STK3311_CHIP_ID_VAL) { dev_err(&client->dev, "invalid chip id: 0x%x\n", chipid); @@ -457,30 +476,6 @@ static int stk3310_init(struct iio_dev *indio_dev) return ret; } -static int stk3310_gpio_probe(struct i2c_client *client) -{ - struct device *dev; - struct gpio_desc *gpio; - int ret; - - if (!client) - return -EINVAL; - - dev = &client->dev; - - /* gpio interrupt pin */ - gpio = devm_gpiod_get_index(dev, STK3310_GPIO, 0, GPIOD_IN); - if (IS_ERR(gpio)) { - dev_err(dev, "acpi gpio get index failed\n"); - return PTR_ERR(gpio); - } - - ret = gpiod_to_irq(gpio); - dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret); - - return ret; -} - static bool stk3310_is_volatile_reg(struct device *dev, unsigned int reg) { switch (reg) { @@ -604,27 +599,30 @@ static int stk3310_probe(struct i2c_client *client, if (ret < 0) return ret; - if (client->irq < 0) - client->irq = stk3310_gpio_probe(client); - - if (client->irq >= 0) { + if (client->irq > 0) { ret = devm_request_threaded_irq(&client->dev, client->irq, stk3310_irq_handler, stk3310_irq_event_handler, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, STK3310_EVENT, indio_dev); - if (ret < 0) + if (ret < 0) { dev_err(&client->dev, "request irq %d failed\n", - client->irq); + client->irq); + goto err_standby; + } } ret = iio_device_register(indio_dev); if (ret < 0) { dev_err(&client->dev, "device_register failed\n"); - stk3310_set_state(data, STK3310_STATE_STANDBY); + goto err_standby; } + return 0; + +err_standby: + stk3310_set_state(data, STK3310_STATE_STANDBY); return ret; } @@ -648,7 +646,7 @@ static int stk3310_suspend(struct device *dev) static int stk3310_resume(struct device *dev) { - int state = 0; + u8 state = 0; struct stk3310_data *data; data = iio_priv(i2c_get_clientdata(to_i2c_client(dev))); diff --git a/drivers/iio/light/tsl4531.c b/drivers/iio/light/tsl4531.c index 26979183d27c..cf94ec72b181 100644 --- a/drivers/iio/light/tsl4531.c +++ b/drivers/iio/light/tsl4531.c @@ -158,9 +158,9 @@ static int tsl4531_check_id(struct i2c_client *client) case TSL45313_ID: case TSL45315_ID: case TSL45317_ID: - return 1; - default: return 0; + default: + return -ENODEV; } } @@ -180,9 +180,10 @@ static int tsl4531_probe(struct i2c_client *client, data->client = client; mutex_init(&data->lock); - if (!tsl4531_check_id(client)) { + ret = tsl4531_check_id(client); + if (ret) { dev_err(&client->dev, "no TSL4531 sensor\n"); - return -ENODEV; + return ret; } ret = i2c_smbus_write_byte_data(data->client, TSL4531_CONTROL, diff --git a/drivers/iio/light/us5182d.c b/drivers/iio/light/us5182d.c new file mode 100644 index 000000000000..49dab3cb3e23 --- /dev/null +++ b/drivers/iio/light/us5182d.c @@ -0,0 +1,507 @@ +/* + * Copyright (c) 2015 Intel Corporation + * + * Driver for UPISEMI us5182d Proximity and Ambient Light Sensor. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * To do: Interrupt support. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/acpi.h> +#include <linux/delay.h> +#include <linux/i2c.h> +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> +#include <linux/mutex.h> + +#define US5182D_REG_CFG0 0x00 +#define US5182D_CFG0_ONESHOT_EN BIT(6) +#define US5182D_CFG0_SHUTDOWN_EN BIT(7) +#define US5182D_CFG0_WORD_ENABLE BIT(0) + +#define US5182D_REG_CFG1 0x01 +#define US5182D_CFG1_ALS_RES16 BIT(4) +#define US5182D_CFG1_AGAIN_DEFAULT 0x00 + +#define US5182D_REG_CFG2 0x02 +#define US5182D_CFG2_PX_RES16 BIT(4) +#define US5182D_CFG2_PXGAIN_DEFAULT BIT(2) + +#define US5182D_REG_CFG3 0x03 +#define US5182D_CFG3_LED_CURRENT100 (BIT(4) | BIT(5)) + +#define US5182D_REG_CFG4 0x10 + +/* + * Registers for tuning the auto dark current cancelling feature. + * DARK_TH(reg 0x27,0x28) - threshold (counts) for auto dark cancelling. + * when ALS > DARK_TH --> ALS_Code = ALS - Upper(0x2A) * Dark + * when ALS < DARK_TH --> ALS_Code = ALS - Lower(0x29) * Dark + */ +#define US5182D_REG_UDARK_TH 0x27 +#define US5182D_REG_DARK_AUTO_EN 0x2b +#define US5182D_REG_AUTO_LDARK_GAIN 0x29 +#define US5182D_REG_AUTO_HDARK_GAIN 0x2a + +#define US5182D_OPMODE_ALS 0x01 +#define US5182D_OPMODE_PX 0x02 +#define US5182D_OPMODE_SHIFT 4 + +#define US5182D_REG_DARK_AUTO_EN_DEFAULT 0x80 +#define US5182D_REG_AUTO_LDARK_GAIN_DEFAULT 0x16 +#define US5182D_REG_AUTO_HDARK_GAIN_DEFAULT 0x00 + +#define US5182D_REG_ADL 0x0c +#define US5182D_REG_PDL 0x0e + +#define US5182D_REG_MODE_STORE 0x21 +#define US5182D_STORE_MODE 0x01 + +#define US5182D_REG_CHIPID 0xb2 + +#define US5182D_OPMODE_MASK GENMASK(5, 4) +#define US5182D_AGAIN_MASK 0x07 +#define US5182D_RESET_CHIP 0x01 + +#define US5182D_CHIPID 0x26 +#define US5182D_DRV_NAME "us5182d" + +#define US5182D_GA_RESOLUTION 1000 + +#define US5182D_READ_BYTE 1 +#define US5182D_READ_WORD 2 +#define US5182D_OPSTORE_SLEEP_TIME 20 /* ms */ + +/* Available ranges: [12354, 7065, 3998, 2202, 1285, 498, 256, 138] lux */ +static const int us5182d_scales[] = {188500, 107800, 61000, 33600, 19600, 7600, + 3900, 2100}; + +/* + * Experimental thresholds that work with US5182D sensor on evaluation board + * roughly between 12-32 lux + */ +static u16 us5182d_dark_ths_vals[] = {170, 200, 512, 512, 800, 2000, 4000, + 8000}; + +enum mode { + US5182D_ALS_PX, + US5182D_ALS_ONLY, + US5182D_PX_ONLY +}; + +struct us5182d_data { + struct i2c_client *client; + struct mutex lock; + + /* Glass attenuation factor */ + u32 ga; + + /* Dark gain tuning */ + u8 lower_dark_gain; + u8 upper_dark_gain; + u16 *us5182d_dark_ths; + + u8 opmode; +}; + +static IIO_CONST_ATTR(in_illuminance_scale_available, + "0.0021 0.0039 0.0076 0.0196 0.0336 0.061 0.1078 0.1885"); + +static struct attribute *us5182d_attrs[] = { + &iio_const_attr_in_illuminance_scale_available.dev_attr.attr, + NULL +}; + +static const struct attribute_group us5182d_attr_group = { + .attrs = us5182d_attrs, +}; + +static const struct { + u8 reg; + u8 val; +} us5182d_regvals[] = { + {US5182D_REG_CFG0, (US5182D_CFG0_SHUTDOWN_EN | + US5182D_CFG0_WORD_ENABLE)}, + {US5182D_REG_CFG1, US5182D_CFG1_ALS_RES16}, + {US5182D_REG_CFG2, (US5182D_CFG2_PX_RES16 | + US5182D_CFG2_PXGAIN_DEFAULT)}, + {US5182D_REG_CFG3, US5182D_CFG3_LED_CURRENT100}, + {US5182D_REG_MODE_STORE, US5182D_STORE_MODE}, + {US5182D_REG_CFG4, 0x00}, +}; + +static const struct iio_chan_spec us5182d_channels[] = { + { + .type = IIO_LIGHT, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | + BIT(IIO_CHAN_INFO_SCALE), + }, + { + .type = IIO_PROXIMITY, + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), + } +}; + +static int us5182d_get_als(struct us5182d_data *data) +{ + int ret; + unsigned long result; + + ret = i2c_smbus_read_word_data(data->client, + US5182D_REG_ADL); + if (ret < 0) + return ret; + + result = ret * data->ga / US5182D_GA_RESOLUTION; + if (result > 0xffff) + result = 0xffff; + + return result; +} + +static int us5182d_set_opmode(struct us5182d_data *data, u8 mode) +{ + int ret; + + ret = i2c_smbus_read_byte_data(data->client, US5182D_REG_CFG0); + if (ret < 0) + return ret; + + /* + * In oneshot mode the chip will power itself down after taking the + * required measurement. + */ + ret = ret | US5182D_CFG0_ONESHOT_EN; + + /* update mode */ + ret = ret & ~US5182D_OPMODE_MASK; + ret = ret | (mode << US5182D_OPMODE_SHIFT); + + /* + * After updating the operating mode, the chip requires that + * the operation is stored, by writing 1 in the STORE_MODE + * register (auto-clearing). + */ + ret = i2c_smbus_write_byte_data(data->client, US5182D_REG_CFG0, ret); + if (ret < 0) + return ret; + + if (mode == data->opmode) + return 0; + + ret = i2c_smbus_write_byte_data(data->client, US5182D_REG_MODE_STORE, + US5182D_STORE_MODE); + if (ret < 0) + return ret; + + data->opmode = mode; + msleep(US5182D_OPSTORE_SLEEP_TIME); + + return 0; +} + +static int us5182d_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + struct us5182d_data *data = iio_priv(indio_dev); + int ret; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + switch (chan->type) { + case IIO_LIGHT: + mutex_lock(&data->lock); + ret = us5182d_set_opmode(data, US5182D_OPMODE_ALS); + if (ret < 0) + goto out_err; + + ret = us5182d_get_als(data); + if (ret < 0) + goto out_err; + mutex_unlock(&data->lock); + *val = ret; + return IIO_VAL_INT; + case IIO_PROXIMITY: + mutex_lock(&data->lock); + ret = us5182d_set_opmode(data, US5182D_OPMODE_PX); + if (ret < 0) + goto out_err; + + ret = i2c_smbus_read_word_data(data->client, + US5182D_REG_PDL); + if (ret < 0) + goto out_err; + mutex_unlock(&data->lock); + *val = ret; + return IIO_VAL_INT; + default: + return -EINVAL; + } + + case IIO_CHAN_INFO_SCALE: + ret = i2c_smbus_read_byte_data(data->client, US5182D_REG_CFG1); + if (ret < 0) + return ret; + + *val = 0; + *val2 = us5182d_scales[ret & US5182D_AGAIN_MASK]; + + return IIO_VAL_INT_PLUS_MICRO; + default: + return -EINVAL; + } + + return -EINVAL; +out_err: + mutex_unlock(&data->lock); + return ret; +} + +/** + * us5182d_update_dark_th - update Darh_Th registers + * @data us5182d_data structure + * @index index in us5182d_dark_ths array to use for the updated value + * + * Function needs to be called with a lock held because it needs two i2c write + * byte operations as these registers (0x27 0x28) don't work in word mode + * accessing. + */ +static int us5182d_update_dark_th(struct us5182d_data *data, int index) +{ + __be16 dark_th = cpu_to_be16(data->us5182d_dark_ths[index]); + int ret; + + ret = i2c_smbus_write_byte_data(data->client, US5182D_REG_UDARK_TH, + ((u8 *)&dark_th)[0]); + if (ret < 0) + return ret; + + return i2c_smbus_write_byte_data(data->client, US5182D_REG_UDARK_TH + 1, + ((u8 *)&dark_th)[1]); +} + +/** + * us5182d_apply_scale - update the ALS scale + * @data us5182d_data structure + * @index index in us5182d_scales array to use for the updated value + * + * Function needs to be called with a lock held as we're having more than one + * i2c operation. + */ +static int us5182d_apply_scale(struct us5182d_data *data, int index) +{ + int ret; + + ret = i2c_smbus_read_byte_data(data->client, US5182D_REG_CFG1); + if (ret < 0) + return ret; + + ret = ret & (~US5182D_AGAIN_MASK); + ret |= index; + + ret = i2c_smbus_write_byte_data(data->client, US5182D_REG_CFG1, ret); + if (ret < 0) + return ret; + + return us5182d_update_dark_th(data, index); +} + +static int us5182d_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int val, + int val2, long mask) +{ + struct us5182d_data *data = iio_priv(indio_dev); + int ret, i; + + switch (mask) { + case IIO_CHAN_INFO_SCALE: + if (val != 0) + return -EINVAL; + for (i = 0; i < ARRAY_SIZE(us5182d_scales); i++) + if (val2 == us5182d_scales[i]) { + mutex_lock(&data->lock); + ret = us5182d_apply_scale(data, i); + mutex_unlock(&data->lock); + return ret; + } + break; + default: + return -EINVAL; + } + + return -EINVAL; +} + +static const struct iio_info us5182d_info = { + .driver_module = THIS_MODULE, + .read_raw = us5182d_read_raw, + .write_raw = us5182d_write_raw, + .attrs = &us5182d_attr_group, +}; + +static int us5182d_reset(struct iio_dev *indio_dev) +{ + struct us5182d_data *data = iio_priv(indio_dev); + + return i2c_smbus_write_byte_data(data->client, US5182D_REG_CFG3, + US5182D_RESET_CHIP); +} + +static int us5182d_init(struct iio_dev *indio_dev) +{ + struct us5182d_data *data = iio_priv(indio_dev); + int i, ret; + + ret = us5182d_reset(indio_dev); + if (ret < 0) + return ret; + + data->opmode = 0; + for (i = 0; i < ARRAY_SIZE(us5182d_regvals); i++) { + ret = i2c_smbus_write_byte_data(data->client, + us5182d_regvals[i].reg, + us5182d_regvals[i].val); + if (ret < 0) + return ret; + } + + return 0; +} + +static void us5182d_get_platform_data(struct iio_dev *indio_dev) +{ + struct us5182d_data *data = iio_priv(indio_dev); + + if (device_property_read_u32(&data->client->dev, "upisemi,glass-coef", + &data->ga)) + data->ga = US5182D_GA_RESOLUTION; + if (device_property_read_u16_array(&data->client->dev, + "upisemi,dark-ths", + data->us5182d_dark_ths, + ARRAY_SIZE(us5182d_dark_ths_vals))) + data->us5182d_dark_ths = us5182d_dark_ths_vals; + if (device_property_read_u8(&data->client->dev, + "upisemi,upper-dark-gain", + &data->upper_dark_gain)) + data->upper_dark_gain = US5182D_REG_AUTO_HDARK_GAIN_DEFAULT; + if (device_property_read_u8(&data->client->dev, + "upisemi,lower-dark-gain", + &data->lower_dark_gain)) + data->lower_dark_gain = US5182D_REG_AUTO_LDARK_GAIN_DEFAULT; +} + +static int us5182d_dark_gain_config(struct iio_dev *indio_dev) +{ + struct us5182d_data *data = iio_priv(indio_dev); + int ret; + + ret = us5182d_update_dark_th(data, US5182D_CFG1_AGAIN_DEFAULT); + if (ret < 0) + return ret; + + ret = i2c_smbus_write_byte_data(data->client, + US5182D_REG_AUTO_LDARK_GAIN, + data->lower_dark_gain); + if (ret < 0) + return ret; + + ret = i2c_smbus_write_byte_data(data->client, + US5182D_REG_AUTO_HDARK_GAIN, + data->upper_dark_gain); + if (ret < 0) + return ret; + + return i2c_smbus_write_byte_data(data->client, US5182D_REG_DARK_AUTO_EN, + US5182D_REG_DARK_AUTO_EN_DEFAULT); +} + +static int us5182d_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct us5182d_data *data; + struct iio_dev *indio_dev; + int ret; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + data = iio_priv(indio_dev); + i2c_set_clientdata(client, indio_dev); + data->client = client; + + mutex_init(&data->lock); + + indio_dev->dev.parent = &client->dev; + indio_dev->info = &us5182d_info; + indio_dev->name = US5182D_DRV_NAME; + indio_dev->channels = us5182d_channels; + indio_dev->num_channels = ARRAY_SIZE(us5182d_channels); + indio_dev->modes = INDIO_DIRECT_MODE; + + ret = i2c_smbus_read_byte_data(data->client, US5182D_REG_CHIPID); + if (ret != US5182D_CHIPID) { + dev_err(&data->client->dev, + "Failed to detect US5182 light chip\n"); + return (ret < 0) ? ret : -ENODEV; + } + + us5182d_get_platform_data(indio_dev); + ret = us5182d_init(indio_dev); + if (ret < 0) + return ret; + + ret = us5182d_dark_gain_config(indio_dev); + if (ret < 0) + return ret; + + return iio_device_register(indio_dev); +} + +static int us5182d_remove(struct i2c_client *client) +{ + iio_device_unregister(i2c_get_clientdata(client)); + return i2c_smbus_write_byte_data(client, US5182D_REG_CFG0, + US5182D_CFG0_SHUTDOWN_EN); +} + +static const struct acpi_device_id us5182d_acpi_match[] = { + { "USD5182", 0}, + {} +}; + +MODULE_DEVICE_TABLE(acpi, us5182d_acpi_match); + +static const struct i2c_device_id us5182d_id[] = { + {"usd5182", 0}, + {} +}; + +MODULE_DEVICE_TABLE(i2c, us5182d_id); + +static struct i2c_driver us5182d_driver = { + .driver = { + .name = US5182D_DRV_NAME, + .acpi_match_table = ACPI_PTR(us5182d_acpi_match), + }, + .probe = us5182d_probe, + .remove = us5182d_remove, + .id_table = us5182d_id, + +}; +module_i2c_driver(us5182d_driver); + +MODULE_AUTHOR("Adriana Reus <adriana.reus@intel.com>"); +MODULE_DESCRIPTION("Driver for us5182d Proximity and Light Sensor"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/magnetometer/Kconfig b/drivers/iio/magnetometer/Kconfig index efb9350b0d76..868abada3409 100644 --- a/drivers/iio/magnetometer/Kconfig +++ b/drivers/iio/magnetometer/Kconfig @@ -24,6 +24,24 @@ config AK09911 help Deprecated: AK09911 is now supported by AK8975 driver. +config BMC150_MAGN + tristate "Bosch BMC150 Magnetometer Driver" + depends on I2C + select REGMAP_I2C + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + help + Say yes here to build support for the BMC150 magnetometer. + + Currently this only supports the device via an i2c interface. + + This is a combo module with both accelerometer and magnetometer. + This driver is only implementing magnetometer part, which has + its own address and register map. + + To compile this driver as a module, choose M here: the module will be + called bmc150_magn. + config MAG3110 tristate "Freescale MAG3110 3-Axis Magnetometer" depends on I2C @@ -87,19 +105,4 @@ config IIO_ST_MAGN_SPI_3AXIS depends on IIO_ST_MAGN_3AXIS depends on IIO_ST_SENSORS_SPI -config BMC150_MAGN - tristate "Bosch BMC150 Magnetometer Driver" - depends on I2C - select REGMAP_I2C - select IIO_BUFFER - select IIO_TRIGGERED_BUFFER - help - Say yes here to build support for the BMC150 magnetometer. - - Currently this only supports the device via an i2c interface. - - This is a combo module with both accelerometer and magnetometer. - This driver is only implementing magnetometer part, which has - its own address and register map. - endmenu diff --git a/drivers/iio/magnetometer/Makefile b/drivers/iio/magnetometer/Makefile index 33b1d4d54ee7..2c72df458ec2 100644 --- a/drivers/iio/magnetometer/Makefile +++ b/drivers/iio/magnetometer/Makefile @@ -4,6 +4,7 @@ # When adding new entries keep the list in alphabetical order obj-$(CONFIG_AK8975) += ak8975.o +obj-$(CONFIG_BMC150_MAGN) += bmc150_magn.o obj-$(CONFIG_MAG3110) += mag3110.o obj-$(CONFIG_HID_SENSOR_MAGNETOMETER_3D) += hid-sensor-magn-3d.o obj-$(CONFIG_MMC35240) += mmc35240.o @@ -14,5 +15,3 @@ st_magn-$(CONFIG_IIO_BUFFER) += st_magn_buffer.o obj-$(CONFIG_IIO_ST_MAGN_I2C_3AXIS) += st_magn_i2c.o obj-$(CONFIG_IIO_ST_MAGN_SPI_3AXIS) += st_magn_spi.o - -obj-$(CONFIG_BMC150_MAGN) += bmc150_magn.o diff --git a/drivers/iio/magnetometer/bmc150_magn.c b/drivers/iio/magnetometer/bmc150_magn.c index d8e614ca069f..1615b23d7b2a 100644 --- a/drivers/iio/magnetometer/bmc150_magn.c +++ b/drivers/iio/magnetometer/bmc150_magn.c @@ -37,7 +37,6 @@ #define BMC150_MAGN_DRV_NAME "bmc150_magn" #define BMC150_MAGN_IRQ_NAME "bmc150_magn_event" -#define BMC150_MAGN_GPIO_INT "interrupt" #define BMC150_MAGN_REG_CHIP_ID 0x40 #define BMC150_MAGN_CHIP_ID_VAL 0x32 @@ -833,31 +832,6 @@ static const struct iio_buffer_setup_ops bmc150_magn_buffer_setup_ops = { .postdisable = bmc150_magn_buffer_postdisable, }; -static int bmc150_magn_gpio_probe(struct i2c_client *client) -{ - struct device *dev; - struct gpio_desc *gpio; - int ret; - - if (!client) - return -EINVAL; - - dev = &client->dev; - - /* data ready GPIO interrupt pin */ - gpio = devm_gpiod_get_index(dev, BMC150_MAGN_GPIO_INT, 0, GPIOD_IN); - if (IS_ERR(gpio)) { - dev_err(dev, "ACPI GPIO get index failed\n"); - return PTR_ERR(gpio); - } - - ret = gpiod_to_irq(gpio); - - dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret); - - return ret; -} - static const char *bmc150_magn_match_acpi_device(struct device *dev) { const struct acpi_device_id *id; @@ -911,9 +885,6 @@ static int bmc150_magn_probe(struct i2c_client *client, indio_dev->modes = INDIO_DIRECT_MODE; indio_dev->info = &bmc150_magn_info; - if (client->irq <= 0) - client->irq = bmc150_magn_gpio_probe(client); - if (client->irq > 0) { data->dready_trig = devm_iio_trigger_alloc(&client->dev, "%s-dev%d", diff --git a/drivers/iio/magnetometer/st_magn_core.c b/drivers/iio/magnetometer/st_magn_core.c index f8dc4b85d70c..b27f0146647b 100644 --- a/drivers/iio/magnetometer/st_magn_core.c +++ b/drivers/iio/magnetometer/st_magn_core.c @@ -560,6 +560,7 @@ static const struct iio_info magn_info = { .attrs = &st_magn_attribute_group, .read_raw = &st_magn_read_raw, .write_raw = &st_magn_write_raw, + .debugfs_reg_access = &st_sensors_debugfs_reg_access, }; #ifdef CONFIG_IIO_TRIGGER diff --git a/drivers/iio/magnetometer/st_magn_spi.c b/drivers/iio/magnetometer/st_magn_spi.c index 0abca2c6afa6..6325e7dc8e03 100644 --- a/drivers/iio/magnetometer/st_magn_spi.c +++ b/drivers/iio/magnetometer/st_magn_spi.c @@ -58,7 +58,6 @@ MODULE_DEVICE_TABLE(spi, st_magn_id_table); static struct spi_driver st_magn_driver = { .driver = { - .owner = THIS_MODULE, .name = "st-magn-spi", }, .probe = st_magn_spi_probe, diff --git a/drivers/iio/potentiometer/Kconfig b/drivers/iio/potentiometer/Kconfig new file mode 100644 index 000000000000..fd75db73e582 --- /dev/null +++ b/drivers/iio/potentiometer/Kconfig @@ -0,0 +1,20 @@ +# +# Potentiometer drivers +# +# When adding new entries keep the list in alphabetical order + +menu "Digital potentiometers" + +config MCP4531 + tristate "Microchip MCP45xx/MCP46xx Digital Potentiometer driver" + depends on I2C + help + Say yes here to build support for the Microchip + MCP4531, MCP4532, MCP4551, MCP4552, + MCP4631, MCP4632, MCP4651, MCP4652 + digital potentiomenter chips. + + To compile this driver as a module, choose M here: the + module will be called mcp4531. + +endmenu diff --git a/drivers/iio/potentiometer/Makefile b/drivers/iio/potentiometer/Makefile new file mode 100644 index 000000000000..8afe49227012 --- /dev/null +++ b/drivers/iio/potentiometer/Makefile @@ -0,0 +1,6 @@ +# +# Makefile for industrial I/O potentiometer drivers +# + +# When adding new entries keep the list in alphabetical order +obj-$(CONFIG_MCP4531) += mcp4531.o diff --git a/drivers/iio/potentiometer/mcp4531.c b/drivers/iio/potentiometer/mcp4531.c new file mode 100644 index 000000000000..a3f66874ee2e --- /dev/null +++ b/drivers/iio/potentiometer/mcp4531.c @@ -0,0 +1,231 @@ +/* + * Industrial I/O driver for Microchip digital potentiometers + * Copyright (c) 2015 Axentia Technologies AB + * Author: Peter Rosin <peda@axentia.se> + * + * Datasheet: http://www.microchip.com/downloads/en/DeviceDoc/22096b.pdf + * + * DEVID #Wipers #Positions Resistor Opts (kOhm) i2c address + * mcp4531 1 129 5, 10, 50, 100 010111x + * mcp4532 1 129 5, 10, 50, 100 01011xx + * mcp4551 1 257 5, 10, 50, 100 010111x + * mcp4552 1 257 5, 10, 50, 100 01011xx + * mcp4631 2 129 5, 10, 50, 100 0101xxx + * mcp4632 2 129 5, 10, 50, 100 01011xx + * mcp4651 2 257 5, 10, 50, 100 0101xxx + * mcp4652 2 257 5, 10, 50, 100 01011xx + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/err.h> + +#include <linux/iio/iio.h> + +struct mcp4531_cfg { + int wipers; + int max_pos; + int kohms; +}; + +enum mcp4531_type { + MCP453x_502, + MCP453x_103, + MCP453x_503, + MCP453x_104, + MCP455x_502, + MCP455x_103, + MCP455x_503, + MCP455x_104, + MCP463x_502, + MCP463x_103, + MCP463x_503, + MCP463x_104, + MCP465x_502, + MCP465x_103, + MCP465x_503, + MCP465x_104, +}; + +static const struct mcp4531_cfg mcp4531_cfg[] = { + [MCP453x_502] = { .wipers = 1, .max_pos = 128, .kohms = 5, }, + [MCP453x_103] = { .wipers = 1, .max_pos = 128, .kohms = 10, }, + [MCP453x_503] = { .wipers = 1, .max_pos = 128, .kohms = 50, }, + [MCP453x_104] = { .wipers = 1, .max_pos = 128, .kohms = 100, }, + [MCP455x_502] = { .wipers = 1, .max_pos = 256, .kohms = 5, }, + [MCP455x_103] = { .wipers = 1, .max_pos = 256, .kohms = 10, }, + [MCP455x_503] = { .wipers = 1, .max_pos = 256, .kohms = 50, }, + [MCP455x_104] = { .wipers = 1, .max_pos = 256, .kohms = 100, }, + [MCP463x_502] = { .wipers = 2, .max_pos = 128, .kohms = 5, }, + [MCP463x_103] = { .wipers = 2, .max_pos = 128, .kohms = 10, }, + [MCP463x_503] = { .wipers = 2, .max_pos = 128, .kohms = 50, }, + [MCP463x_104] = { .wipers = 2, .max_pos = 128, .kohms = 100, }, + [MCP465x_502] = { .wipers = 2, .max_pos = 256, .kohms = 5, }, + [MCP465x_103] = { .wipers = 2, .max_pos = 256, .kohms = 10, }, + [MCP465x_503] = { .wipers = 2, .max_pos = 256, .kohms = 50, }, + [MCP465x_104] = { .wipers = 2, .max_pos = 256, .kohms = 100, }, +}; + +#define MCP4531_WRITE (0 << 2) +#define MCP4531_INCR (1 << 2) +#define MCP4531_DECR (2 << 2) +#define MCP4531_READ (3 << 2) + +#define MCP4531_WIPER_SHIFT (4) + +struct mcp4531_data { + struct i2c_client *client; + unsigned long devid; +}; + +#define MCP4531_CHANNEL(ch) { \ + .type = IIO_RESISTANCE, \ + .indexed = 1, \ + .output = 1, \ + .channel = (ch), \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \ +} + +static const struct iio_chan_spec mcp4531_channels[] = { + MCP4531_CHANNEL(0), + MCP4531_CHANNEL(1), +}; + +static int mcp4531_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct mcp4531_data *data = iio_priv(indio_dev); + int address = chan->channel << MCP4531_WIPER_SHIFT; + s32 ret; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + ret = i2c_smbus_read_word_swapped(data->client, + MCP4531_READ | address); + if (ret < 0) + return ret; + *val = ret; + return IIO_VAL_INT; + case IIO_CHAN_INFO_SCALE: + *val = 1000 * mcp4531_cfg[data->devid].kohms; + *val2 = mcp4531_cfg[data->devid].max_pos; + return IIO_VAL_FRACTIONAL; + } + + return -EINVAL; +} + +static int mcp4531_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct mcp4531_data *data = iio_priv(indio_dev); + int address = chan->channel << MCP4531_WIPER_SHIFT; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + if (val > mcp4531_cfg[data->devid].max_pos || val < 0) + return -EINVAL; + break; + default: + return -EINVAL; + } + + return i2c_smbus_write_byte_data(data->client, + MCP4531_WRITE | address | (val >> 8), + val & 0xff); +} + +static const struct iio_info mcp4531_info = { + .read_raw = mcp4531_read_raw, + .write_raw = mcp4531_write_raw, + .driver_module = THIS_MODULE, +}; + +static int mcp4531_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct device *dev = &client->dev; + unsigned long devid = id->driver_data; + struct mcp4531_data *data; + struct iio_dev *indio_dev; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_WORD_DATA)) { + dev_err(dev, "SMBUS Word Data not supported\n"); + return -EIO; + } + + indio_dev = devm_iio_device_alloc(dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + data = iio_priv(indio_dev); + i2c_set_clientdata(client, indio_dev); + data->client = client; + data->devid = devid; + + indio_dev->dev.parent = dev; + indio_dev->info = &mcp4531_info; + indio_dev->channels = mcp4531_channels; + indio_dev->num_channels = mcp4531_cfg[devid].wipers; + indio_dev->name = client->name; + + return devm_iio_device_register(dev, indio_dev); +} + +static const struct i2c_device_id mcp4531_id[] = { + { "mcp4531-502", MCP453x_502 }, + { "mcp4531-103", MCP453x_103 }, + { "mcp4531-503", MCP453x_503 }, + { "mcp4531-104", MCP453x_104 }, + { "mcp4532-502", MCP453x_502 }, + { "mcp4532-103", MCP453x_103 }, + { "mcp4532-503", MCP453x_503 }, + { "mcp4532-104", MCP453x_104 }, + { "mcp4551-502", MCP455x_502 }, + { "mcp4551-103", MCP455x_103 }, + { "mcp4551-503", MCP455x_503 }, + { "mcp4551-104", MCP455x_104 }, + { "mcp4552-502", MCP455x_502 }, + { "mcp4552-103", MCP455x_103 }, + { "mcp4552-503", MCP455x_503 }, + { "mcp4552-104", MCP455x_104 }, + { "mcp4631-502", MCP463x_502 }, + { "mcp4631-103", MCP463x_103 }, + { "mcp4631-503", MCP463x_503 }, + { "mcp4631-104", MCP463x_104 }, + { "mcp4632-502", MCP463x_502 }, + { "mcp4632-103", MCP463x_103 }, + { "mcp4632-503", MCP463x_503 }, + { "mcp4632-104", MCP463x_104 }, + { "mcp4651-502", MCP465x_502 }, + { "mcp4651-103", MCP465x_103 }, + { "mcp4651-503", MCP465x_503 }, + { "mcp4651-104", MCP465x_104 }, + { "mcp4652-502", MCP465x_502 }, + { "mcp4652-103", MCP465x_103 }, + { "mcp4652-503", MCP465x_503 }, + { "mcp4652-104", MCP465x_104 }, + {} +}; +MODULE_DEVICE_TABLE(i2c, mcp4531_id); + +static struct i2c_driver mcp4531_driver = { + .driver = { + .name = "mcp4531", + }, + .probe = mcp4531_probe, + .id_table = mcp4531_id, +}; + +module_i2c_driver(mcp4531_driver); + +MODULE_AUTHOR("Peter Rosin <peda@axentia.se>"); +MODULE_DESCRIPTION("MCP4531 digital potentiometer"); +MODULE_LICENSE("GPL"); diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig index 4745179ff64b..6f2e7c9ac23e 100644 --- a/drivers/iio/pressure/Kconfig +++ b/drivers/iio/pressure/Kconfig @@ -79,6 +79,19 @@ config MS5611_SPI To compile this driver as a module, choose M here: the module will be called ms5611_spi. +config MS5637 + tristate "Measurement Specialties MS5637 pressure & temperature sensor" + depends on I2C + select IIO_MS_SENSORS_I2C + help + If you say yes here you get support for the Measurement Specialties + MS5637 pressure and temperature sensor. + This driver is also used for MS8607 temperature, pressure & humidity + sensor + + This driver can also be built as a module. If so, the module will + be called ms5637. + config IIO_ST_PRESS tristate "STMicroelectronics pressure sensor Driver" depends on (I2C || SPI_MASTER) && SYSFS diff --git a/drivers/iio/pressure/Makefile b/drivers/iio/pressure/Makefile index a4f98f8d90ed..46571c96823f 100644 --- a/drivers/iio/pressure/Makefile +++ b/drivers/iio/pressure/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_MPL3115) += mpl3115.o obj-$(CONFIG_MS5611) += ms5611_core.o obj-$(CONFIG_MS5611_I2C) += ms5611_i2c.o obj-$(CONFIG_MS5611_SPI) += ms5611_spi.o +obj-$(CONFIG_MS5637) += ms5637.o obj-$(CONFIG_IIO_ST_PRESS) += st_pressure.o st_pressure-y := st_pressure_core.o st_pressure-$(CONFIG_IIO_BUFFER) += st_pressure_buffer.o diff --git a/drivers/iio/pressure/ms5611_spi.c b/drivers/iio/pressure/ms5611_spi.c index 08ee6e88c79f..aaa0c4ba91a7 100644 --- a/drivers/iio/pressure/ms5611_spi.c +++ b/drivers/iio/pressure/ms5611_spi.c @@ -117,7 +117,6 @@ MODULE_DEVICE_TABLE(spi, ms5611_id); static struct spi_driver ms5611_driver = { .driver = { .name = "ms5611", - .owner = THIS_MODULE, }, .id_table = ms5611_id, .probe = ms5611_spi_probe, diff --git a/drivers/iio/pressure/ms5637.c b/drivers/iio/pressure/ms5637.c new file mode 100644 index 000000000000..e8d0e0da938d --- /dev/null +++ b/drivers/iio/pressure/ms5637.c @@ -0,0 +1,190 @@ +/* + * ms5637.c - Support for Measurement-Specialties ms5637 and ms8607 + * pressure & temperature sensor + * + * Copyright (c) 2015 Measurement-Specialties + * + * Licensed under the GPL-2. + * + * (7-bit I2C slave address 0x76) + * + * Datasheet: + * http://www.meas-spec.com/downloads/MS5637-02BA03.pdf + * Datasheet: + * http://www.meas-spec.com/downloads/MS8607-02BA01.pdf + */ + +#include <linux/init.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/stat.h> +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> +#include <linux/mutex.h> + +#include "../common/ms_sensors/ms_sensors_i2c.h" + +static const int ms5637_samp_freq[6] = { 960, 480, 240, 120, 60, 30 }; +/* String copy of the above const for readability purpose */ +static const char ms5637_show_samp_freq[] = "960 480 240 120 60 30"; + +static int ms5637_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *channel, int *val, + int *val2, long mask) +{ + int ret; + int temperature; + unsigned int pressure; + struct ms_tp_dev *dev_data = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_PROCESSED: + ret = ms_sensors_read_temp_and_pressure(dev_data, + &temperature, + &pressure); + if (ret) + return ret; + + switch (channel->type) { + case IIO_TEMP: /* in milli °C */ + *val = temperature; + + return IIO_VAL_INT; + case IIO_PRESSURE: /* in kPa */ + *val = pressure / 1000; + *val2 = (pressure % 1000) * 1000; + + return IIO_VAL_INT_PLUS_MICRO; + default: + return -EINVAL; + } + case IIO_CHAN_INFO_SAMP_FREQ: + *val = ms5637_samp_freq[dev_data->res_index]; + + return IIO_VAL_INT; + default: + return -EINVAL; + } +} + +static int ms5637_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct ms_tp_dev *dev_data = iio_priv(indio_dev); + int i; + + switch (mask) { + case IIO_CHAN_INFO_SAMP_FREQ: + i = ARRAY_SIZE(ms5637_samp_freq); + while (i-- > 0) + if (val == ms5637_samp_freq[i]) + break; + if (i < 0) + return -EINVAL; + dev_data->res_index = i; + + return 0; + default: + return -EINVAL; + } +} + +static const struct iio_chan_spec ms5637_channels[] = { + { + .type = IIO_TEMP, + .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), + }, + { + .type = IIO_PRESSURE, + .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), + } +}; + +static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(ms5637_show_samp_freq); + +static struct attribute *ms5637_attributes[] = { + &iio_const_attr_sampling_frequency_available.dev_attr.attr, + NULL, +}; + +static const struct attribute_group ms5637_attribute_group = { + .attrs = ms5637_attributes, +}; + +static const struct iio_info ms5637_info = { + .read_raw = ms5637_read_raw, + .write_raw = ms5637_write_raw, + .attrs = &ms5637_attribute_group, + .driver_module = THIS_MODULE, +}; + +static int ms5637_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct ms_tp_dev *dev_data; + struct iio_dev *indio_dev; + int ret; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_READ_WORD_DATA | + I2C_FUNC_SMBUS_WRITE_BYTE | + I2C_FUNC_SMBUS_READ_I2C_BLOCK)) { + dev_err(&client->dev, + "Adapter does not support some i2c transaction\n"); + return -ENODEV; + } + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*dev_data)); + if (!indio_dev) + return -ENOMEM; + + dev_data = iio_priv(indio_dev); + dev_data->client = client; + dev_data->res_index = 5; + mutex_init(&dev_data->lock); + + indio_dev->info = &ms5637_info; + indio_dev->name = id->name; + indio_dev->dev.parent = &client->dev; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = ms5637_channels; + indio_dev->num_channels = ARRAY_SIZE(ms5637_channels); + + i2c_set_clientdata(client, indio_dev); + + ret = ms_sensors_reset(client, 0x1E, 3000); + if (ret) + return ret; + + ret = ms_sensors_tp_read_prom(dev_data); + if (ret) + return ret; + + return devm_iio_device_register(&client->dev, indio_dev); +} + +static const struct i2c_device_id ms5637_id[] = { + {"ms5637", 0}, + {"ms8607-temppressure", 1}, + {} +}; + +static struct i2c_driver ms5637_driver = { + .probe = ms5637_probe, + .id_table = ms5637_id, + .driver = { + .name = "ms5637" + }, +}; + +module_i2c_driver(ms5637_driver); + +MODULE_DESCRIPTION("Measurement-Specialties ms5637 temperature & pressure driver"); +MODULE_AUTHOR("William Markezana <william.markezana@meas-spec.com>"); +MODULE_AUTHOR("Ludovic Tancerel <ludovic.tancerel@maplehightech.com>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c index eb41d2b92c24..b39a2fb0671c 100644 --- a/drivers/iio/pressure/st_pressure_core.c +++ b/drivers/iio/pressure/st_pressure_core.c @@ -400,6 +400,7 @@ static const struct iio_info press_info = { .attrs = &st_press_attribute_group, .read_raw = &st_press_read_raw, .write_raw = &st_press_write_raw, + .debugfs_reg_access = &st_sensors_debugfs_reg_access, }; #ifdef CONFIG_IIO_TRIGGER diff --git a/drivers/iio/pressure/st_pressure_spi.c b/drivers/iio/pressure/st_pressure_spi.c index 1ffa6d4d349c..40c0692ff1de 100644 --- a/drivers/iio/pressure/st_pressure_spi.c +++ b/drivers/iio/pressure/st_pressure_spi.c @@ -56,7 +56,6 @@ MODULE_DEVICE_TABLE(spi, st_press_id_table); static struct spi_driver st_press_driver = { .driver = { - .owner = THIS_MODULE, .name = "st-press-spi", }, .probe = st_press_spi_probe, diff --git a/drivers/iio/proximity/Kconfig b/drivers/iio/proximity/Kconfig index 41a8d8ffa0de..ef4c73db5b53 100644 --- a/drivers/iio/proximity/Kconfig +++ b/drivers/iio/proximity/Kconfig @@ -20,6 +20,18 @@ endmenu menu "Proximity sensors" +config LIDAR_LITE_V2 + tristate "PulsedLight LIDAR sensor" + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + depends on I2C + help + Say Y to build a driver for PulsedLight LIDAR range finding + sensor. + + To compile this driver as a module, choose M here: the + module will be called pulsedlight-lite-v2 + config SX9500 tristate "SX9500 Semtech proximity sensor" select IIO_BUFFER diff --git a/drivers/iio/proximity/Makefile b/drivers/iio/proximity/Makefile index 9818dc562abd..9aadd9a8ee99 100644 --- a/drivers/iio/proximity/Makefile +++ b/drivers/iio/proximity/Makefile @@ -4,4 +4,5 @@ # When adding new entries keep the list in alphabetical order obj-$(CONFIG_AS3935) += as3935.o +obj-$(CONFIG_LIDAR_LITE_V2) += pulsedlight-lidar-lite-v2.o obj-$(CONFIG_SX9500) += sx9500.o diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c index bc0d68efd455..f4d29d5dbd5f 100644 --- a/drivers/iio/proximity/as3935.c +++ b/drivers/iio/proximity/as3935.c @@ -434,6 +434,12 @@ static int as3935_remove(struct spi_device *spi) return 0; } +static const struct of_device_id as3935_of_match[] = { + { .compatible = "ams,as3935", }, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, as3935_of_match); + static const struct spi_device_id as3935_id[] = { {"as3935", 0}, {}, @@ -443,7 +449,7 @@ MODULE_DEVICE_TABLE(spi, as3935_id); static struct spi_driver as3935_driver = { .driver = { .name = "as3935", - .owner = THIS_MODULE, + .of_match_table = of_match_ptr(as3935_of_match), .pm = AS3935_PM_OPS, }, .probe = as3935_probe, diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c new file mode 100644 index 000000000000..961f9f990faf --- /dev/null +++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c @@ -0,0 +1,289 @@ +/* + * pulsedlight-lidar-lite-v2.c - Support for PulsedLight LIDAR sensor + * + * Copyright (C) 2015 Matt Ranostay <mranostay@gmail.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * TODO: runtime pm, interrupt mode, and signal strength reporting + */ + +#include <linux/err.h> +#include <linux/init.h> +#include <linux/i2c.h> +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> +#include <linux/iio/buffer.h> +#include <linux/iio/trigger.h> +#include <linux/iio/triggered_buffer.h> +#include <linux/iio/trigger_consumer.h> + +#define LIDAR_REG_CONTROL 0x00 +#define LIDAR_REG_CONTROL_ACQUIRE BIT(2) + +#define LIDAR_REG_STATUS 0x01 +#define LIDAR_REG_STATUS_INVALID BIT(3) +#define LIDAR_REG_STATUS_READY BIT(0) + +#define LIDAR_REG_DATA_HBYTE 0x0f +#define LIDAR_REG_DATA_LBYTE 0x10 + +#define LIDAR_DRV_NAME "lidar" + +struct lidar_data { + struct iio_dev *indio_dev; + struct i2c_client *client; + + u16 buffer[8]; /* 2 byte distance + 8 byte timestamp */ +}; + +static const struct iio_chan_spec lidar_channels[] = { + { + .type = IIO_DISTANCE, + .info_mask_separate = + BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), + .scan_index = 0, + .scan_type = { + .sign = 'u', + .realbits = 16, + .storagebits = 16, + }, + }, + IIO_CHAN_SOFT_TIMESTAMP(1), +}; + +static int lidar_read_byte(struct lidar_data *data, int reg) +{ + struct i2c_client *client = data->client; + int ret; + + /* + * Device needs a STOP condition between address write, and data read + * so in turn i2c_smbus_read_byte_data cannot be used + */ + + ret = i2c_smbus_write_byte(client, reg); + if (ret < 0) { + dev_err(&client->dev, "cannot write addr value"); + return ret; + } + + ret = i2c_smbus_read_byte(client); + if (ret < 0) + dev_err(&client->dev, "cannot read data value"); + + return ret; +} + +static inline int lidar_write_control(struct lidar_data *data, int val) +{ + return i2c_smbus_write_byte_data(data->client, LIDAR_REG_CONTROL, val); +} + +static int lidar_read_measurement(struct lidar_data *data, u16 *reg) +{ + int ret; + int val; + + ret = lidar_read_byte(data, LIDAR_REG_DATA_HBYTE); + if (ret < 0) + return ret; + val = ret << 8; + + ret = lidar_read_byte(data, LIDAR_REG_DATA_LBYTE); + if (ret < 0) + return ret; + + val |= ret; + *reg = val; + + return 0; +} + +static int lidar_get_measurement(struct lidar_data *data, u16 *reg) +{ + struct i2c_client *client = data->client; + int tries = 10; + int ret; + + /* start sample */ + ret = lidar_write_control(data, LIDAR_REG_CONTROL_ACQUIRE); + if (ret < 0) { + dev_err(&client->dev, "cannot send start measurement command"); + return ret; + } + + while (tries--) { + usleep_range(1000, 2000); + + ret = lidar_read_byte(data, LIDAR_REG_STATUS); + if (ret < 0) + break; + + /* return 0 since laser is likely pointed out of range */ + if (ret & LIDAR_REG_STATUS_INVALID) { + *reg = 0; + ret = 0; + break; + } + + /* sample ready to read */ + if (!(ret & LIDAR_REG_STATUS_READY)) { + ret = lidar_read_measurement(data, reg); + break; + } + ret = -EIO; + } + + return ret; +} + +static int lidar_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct lidar_data *data = iio_priv(indio_dev); + int ret = -EINVAL; + + mutex_lock(&indio_dev->mlock); + + if (iio_buffer_enabled(indio_dev) && mask == IIO_CHAN_INFO_RAW) { + ret = -EBUSY; + goto error_busy; + } + + switch (mask) { + case IIO_CHAN_INFO_RAW: { + u16 reg; + + ret = lidar_get_measurement(data, ®); + if (!ret) { + *val = reg; + ret = IIO_VAL_INT; + } + break; + } + case IIO_CHAN_INFO_SCALE: + *val = 0; + *val2 = 10000; + ret = IIO_VAL_INT_PLUS_MICRO; + break; + } + +error_busy: + mutex_unlock(&indio_dev->mlock); + + return ret; +} + +static irqreturn_t lidar_trigger_handler(int irq, void *private) +{ + struct iio_poll_func *pf = private; + struct iio_dev *indio_dev = pf->indio_dev; + struct lidar_data *data = iio_priv(indio_dev); + int ret; + + ret = lidar_get_measurement(data, data->buffer); + if (!ret) { + iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, + iio_get_time_ns()); + } else { + dev_err(&data->client->dev, "cannot read LIDAR measurement"); + } + + iio_trigger_notify_done(indio_dev->trig); + + return IRQ_HANDLED; +} + +static const struct iio_info lidar_info = { + .driver_module = THIS_MODULE, + .read_raw = lidar_read_raw, +}; + +static int lidar_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct lidar_data *data; + struct iio_dev *indio_dev; + int ret; + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + indio_dev->info = &lidar_info; + indio_dev->name = LIDAR_DRV_NAME; + indio_dev->channels = lidar_channels; + indio_dev->num_channels = ARRAY_SIZE(lidar_channels); + indio_dev->modes = INDIO_DIRECT_MODE; + + data = iio_priv(indio_dev); + i2c_set_clientdata(client, indio_dev); + + data->client = client; + data->indio_dev = indio_dev; + + ret = iio_triggered_buffer_setup(indio_dev, NULL, + lidar_trigger_handler, NULL); + if (ret) + return ret; + + ret = iio_device_register(indio_dev); + if (ret) + goto error_unreg_buffer; + + return 0; + +error_unreg_buffer: + iio_triggered_buffer_cleanup(indio_dev); + + return ret; +} + +static int lidar_remove(struct i2c_client *client) +{ + struct iio_dev *indio_dev = i2c_get_clientdata(client); + + iio_device_unregister(indio_dev); + iio_triggered_buffer_cleanup(indio_dev); + + return 0; +} + +static const struct i2c_device_id lidar_id[] = { + {"lidar-lite-v2", 0}, + { }, +}; +MODULE_DEVICE_TABLE(i2c, lidar_id); + +static const struct of_device_id lidar_dt_ids[] = { + { .compatible = "pulsedlight,lidar-lite-v2" }, + { } +}; +MODULE_DEVICE_TABLE(of, lidar_dt_ids); + +static struct i2c_driver lidar_driver = { + .driver = { + .name = LIDAR_DRV_NAME, + .of_match_table = of_match_ptr(lidar_dt_ids), + }, + .probe = lidar_probe, + .remove = lidar_remove, + .id_table = lidar_id, +}; +module_i2c_driver(lidar_driver); + +MODULE_AUTHOR("Matt Ranostay <mranostay@gmail.com>"); +MODULE_DESCRIPTION("PulsedLight LIDAR sensor"); +MODULE_LICENSE("GPL"); diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c index 3d756bd8c703..66cd09a18786 100644 --- a/drivers/iio/proximity/sx9500.c +++ b/drivers/iio/proximity/sx9500.c @@ -868,21 +868,12 @@ static void sx9500_gpio_probe(struct i2c_client *client, struct sx9500_data *data) { struct device *dev; - struct gpio_desc *gpio; if (!client) return; dev = &client->dev; - if (client->irq <= 0) { - gpio = devm_gpiod_get_index(dev, SX9500_GPIO_INT, 0, GPIOD_IN); - if (IS_ERR(gpio)) - dev_err(dev, "gpio get irq failed\n"); - else - client->irq = gpiod_to_irq(gpio); - } - data->gpiod_rst = devm_gpiod_get_index(dev, SX9500_GPIO_RESET, 0, GPIOD_OUT_HIGH); if (IS_ERR(data->gpiod_rst)) { diff --git a/drivers/iio/temperature/Kconfig b/drivers/iio/temperature/Kconfig index 21feaa4661b4..c4664e5de791 100644 --- a/drivers/iio/temperature/Kconfig +++ b/drivers/iio/temperature/Kconfig @@ -23,4 +23,26 @@ config TMP006 This driver can also be built as a module. If so, the module will be called tmp006. +config TSYS01 + tristate "Measurement Specialties TSYS01 temperature sensor using I2C bus connection" + depends on I2C + select IIO_MS_SENSORS_I2C + help + If you say yes here you get support for the Measurement Specialties + TSYS01 I2C temperature sensor. + + This driver can also be built as a module. If so, the module will + be called tsys01. + +config TSYS02D + tristate "Measurement Specialties TSYS02D temperature sensor" + depends on I2C + select IIO_MS_SENSORS_I2C + help + If you say yes here you get support for the Measurement Specialties + TSYS02D temperature sensor. + + This driver can also be built as a module. If so, the module will + be called tsys02d. + endmenu diff --git a/drivers/iio/temperature/Makefile b/drivers/iio/temperature/Makefile index 40710a81158e..02bc79d49b24 100644 --- a/drivers/iio/temperature/Makefile +++ b/drivers/iio/temperature/Makefile @@ -4,3 +4,5 @@ obj-$(CONFIG_MLX90614) += mlx90614.o obj-$(CONFIG_TMP006) += tmp006.o +obj-$(CONFIG_TSYS01) += tsys01.o +obj-$(CONFIG_TSYS02D) += tsys02d.o diff --git a/drivers/iio/temperature/mlx90614.c b/drivers/iio/temperature/mlx90614.c index 5d033a5af615..a570c2e2aac3 100644 --- a/drivers/iio/temperature/mlx90614.c +++ b/drivers/iio/temperature/mlx90614.c @@ -3,6 +3,7 @@ * * Copyright (c) 2014 Peter Meerwald <pmeerw@pmeerw.net> * Copyright (c) 2015 Essensium NV + * Copyright (c) 2015 Melexis * * This file is subject to the terms and conditions of version 2 of * the GNU General Public License. See the file COPYING in the main @@ -20,7 +21,6 @@ * always has a pull-up so we do not need an extra GPIO to drive it high. If * the "wakeup" GPIO is not given, power management will be disabled. * - * TODO: filter configuration */ #include <linux/err.h> @@ -32,6 +32,7 @@ #include <linux/pm_runtime.h> #include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> #define MLX90614_OP_RAM 0x00 #define MLX90614_OP_EEPROM 0x20 @@ -71,6 +72,7 @@ #define MLX90614_CONST_SCALE 20 /* Scale in milliKelvin (0.02 * 1000) */ #define MLX90614_CONST_RAW_EMISSIVITY_MAX 65535 /* max value for emissivity */ #define MLX90614_CONST_EMISSIVITY_RESOLUTION 15259 /* 1/65535 ~ 0.000015259 */ +#define MLX90614_CONST_FIR 0x7 /* Fixed value for FIR part of low pass filter */ struct mlx90614_data { struct i2c_client *client; @@ -79,6 +81,20 @@ struct mlx90614_data { unsigned long ready_timestamp; /* in jiffies */ }; +/* Bandwidth values for IIR filtering */ +static const int mlx90614_iir_values[] = {77, 31, 20, 15, 723, 153, 110, 86}; +static IIO_CONST_ATTR(in_temp_object_filter_low_pass_3db_frequency_available, + "0.15 0.20 0.31 0.77 0.86 1.10 1.53 7.23"); + +static struct attribute *mlx90614_attributes[] = { + &iio_const_attr_in_temp_object_filter_low_pass_3db_frequency_available.dev_attr.attr, + NULL, +}; + +static const struct attribute_group mlx90614_attr_group = { + .attrs = mlx90614_attributes, +}; + /* * Erase an address and write word. * The mutex must be locked before calling. @@ -117,6 +133,43 @@ static s32 mlx90614_write_word(const struct i2c_client *client, u8 command, return ret; } +/* + * Find the IIR value inside mlx90614_iir_values array and return its position + * which is equivalent to the bit value in sensor register + */ +static inline s32 mlx90614_iir_search(const struct i2c_client *client, + int value) +{ + int i; + s32 ret; + + for (i = 0; i < ARRAY_SIZE(mlx90614_iir_values); ++i) { + if (value == mlx90614_iir_values[i]) + break; + } + + if (i == ARRAY_SIZE(mlx90614_iir_values)) + return -EINVAL; + + /* + * CONFIG register values must not be changed so + * we must read them before we actually write + * changes + */ + ret = i2c_smbus_read_word_data(client, MLX90614_CONFIG); + if (ret < 0) + return ret; + + ret &= ~MLX90614_CONFIG_FIR_MASK; + ret |= MLX90614_CONST_FIR << MLX90614_CONFIG_FIR_SHIFT; + ret &= ~MLX90614_CONFIG_IIR_MASK; + ret |= i << MLX90614_CONFIG_IIR_SHIFT; + + /* Write changed values */ + ret = mlx90614_write_word(client, MLX90614_CONFIG, ret); + return ret; +} + #ifdef CONFIG_PM /* * If @startup is true, make sure MLX90614_TIMING_STARTUP ms have elapsed since @@ -236,6 +289,21 @@ static int mlx90614_read_raw(struct iio_dev *indio_dev, *val2 = ret * MLX90614_CONST_EMISSIVITY_RESOLUTION; } return IIO_VAL_INT_PLUS_NANO; + case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: /* IIR setting with + FIR = 1024 */ + mlx90614_power_get(data, false); + mutex_lock(&data->lock); + ret = i2c_smbus_read_word_data(data->client, MLX90614_CONFIG); + mutex_unlock(&data->lock); + mlx90614_power_put(data); + + if (ret < 0) + return ret; + + *val = mlx90614_iir_values[ret & MLX90614_CONFIG_IIR_MASK] / 100; + *val2 = (mlx90614_iir_values[ret & MLX90614_CONFIG_IIR_MASK] % 100) * + 10000; + return IIO_VAL_INT_PLUS_MICRO; default: return -EINVAL; } @@ -263,6 +331,18 @@ static int mlx90614_write_raw(struct iio_dev *indio_dev, mlx90614_power_put(data); return ret; + case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: /* IIR Filter setting */ + if (val < 0 || val2 < 0) + return -EINVAL; + + mlx90614_power_get(data, false); + mutex_lock(&data->lock); + ret = mlx90614_iir_search(data->client, + val * 100 + val2 / 10000); + mutex_unlock(&data->lock); + mlx90614_power_put(data); + + return ret; default: return -EINVAL; } @@ -275,6 +355,8 @@ static int mlx90614_write_raw_get_fmt(struct iio_dev *indio_dev, switch (mask) { case IIO_CHAN_INFO_CALIBEMISSIVITY: return IIO_VAL_INT_PLUS_NANO; + case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: + return IIO_VAL_INT_PLUS_MICRO; default: return -EINVAL; } @@ -294,7 +376,8 @@ static const struct iio_chan_spec mlx90614_channels[] = { .modified = 1, .channel2 = IIO_MOD_TEMP_OBJECT, .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_CALIBEMISSIVITY), + BIT(IIO_CHAN_INFO_CALIBEMISSIVITY) | + BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_SCALE), }, @@ -305,7 +388,8 @@ static const struct iio_chan_spec mlx90614_channels[] = { .channel = 1, .channel2 = IIO_MOD_TEMP_OBJECT, .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | - BIT(IIO_CHAN_INFO_CALIBEMISSIVITY), + BIT(IIO_CHAN_INFO_CALIBEMISSIVITY) | + BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_SCALE), }, @@ -315,6 +399,7 @@ static const struct iio_info mlx90614_info = { .read_raw = mlx90614_read_raw, .write_raw = mlx90614_write_raw, .write_raw_get_fmt = mlx90614_write_raw_get_fmt, + .attrs = &mlx90614_attr_group, .driver_module = THIS_MODULE, }; @@ -569,5 +654,6 @@ module_i2c_driver(mlx90614_driver); MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>"); MODULE_AUTHOR("Vianney le Clément de Saint-Marcq <vianney.leclement@essensium.com>"); +MODULE_AUTHOR("Crt Mori <cmo@melexis.com>"); MODULE_DESCRIPTION("Melexis MLX90614 contactless IR temperature sensor driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/iio/temperature/tsys01.c b/drivers/iio/temperature/tsys01.c new file mode 100644 index 000000000000..05c12060ce8d --- /dev/null +++ b/drivers/iio/temperature/tsys01.c @@ -0,0 +1,230 @@ +/* + * tsys01.c - Support for Measurement-Specialties tsys01 temperature sensor + * + * Copyright (c) 2015 Measurement-Specialties + * + * Licensed under the GPL-2. + * + * Datasheet: + * http://www.meas-spec.com/downloads/TSYS01_Digital_Temperature_Sensor.pdf + */ + +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> +#include <linux/device.h> +#include <linux/mutex.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/kernel.h> +#include <linux/stat.h> +#include "../common/ms_sensors/ms_sensors_i2c.h" + +/* TSYS01 Commands */ +#define TSYS01_RESET 0x1E +#define TSYS01_CONVERSION_START 0x48 +#define TSYS01_ADC_READ 0x00 +#define TSYS01_PROM_READ 0xA0 + +#define TSYS01_PROM_WORDS_NB 8 + +struct tsys01_dev { + void *client; + struct mutex lock; /* lock during conversion */ + + int (*reset)(void *cli, u8 cmd, unsigned int delay); + int (*convert_and_read)(void *cli, u8 conv, u8 rd, + unsigned int delay, u32 *adc); + int (*read_prom_word)(void *cli, int cmd, u16 *word); + + u16 prom[TSYS01_PROM_WORDS_NB]; +}; + +/* Multiplication coefficients for temperature computation */ +static const int coeff_mul[] = { -1500000, 1000000, -2000000, + 4000000, -2000000 }; + +static int tsys01_read_temperature(struct iio_dev *indio_dev, + s32 *temperature) +{ + int ret, i; + u32 adc; + s64 temp = 0; + struct tsys01_dev *dev_data = iio_priv(indio_dev); + + mutex_lock(&dev_data->lock); + ret = dev_data->convert_and_read(dev_data->client, + TSYS01_CONVERSION_START, + TSYS01_ADC_READ, 9000, &adc); + mutex_unlock(&dev_data->lock); + if (ret) + return ret; + + adc >>= 8; + + /* Temperature algorithm */ + for (i = 4; i > 0; i--) { + temp += coeff_mul[i] * + (s64)dev_data->prom[5 - i]; + temp *= (s64)adc; + temp = div64_s64(temp, 100000); + } + temp *= 10; + temp += coeff_mul[0] * (s64)dev_data->prom[5]; + temp = div64_s64(temp, 100000); + + *temperature = temp; + + return 0; +} + +static int tsys01_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *channel, int *val, + int *val2, long mask) +{ + int ret; + s32 temperature; + + switch (mask) { + case IIO_CHAN_INFO_PROCESSED: + switch (channel->type) { + case IIO_TEMP: /* in milli °C */ + ret = tsys01_read_temperature(indio_dev, &temperature); + if (ret) + return ret; + *val = temperature; + + return IIO_VAL_INT; + default: + return -EINVAL; + } + default: + return -EINVAL; + } +} + +static const struct iio_chan_spec tsys01_channels[] = { + { + .type = IIO_TEMP, + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_PROCESSED), + } +}; + +static const struct iio_info tsys01_info = { + .read_raw = tsys01_read_raw, + .driver_module = THIS_MODULE, +}; + +static bool tsys01_crc_valid(u16 *n_prom) +{ + u8 cnt; + u8 sum = 0; + + for (cnt = 0; cnt < TSYS01_PROM_WORDS_NB; cnt++) + sum += ((n_prom[0] >> 8) + (n_prom[0] & 0xFF)); + + return (sum == 0); +} + +static int tsys01_read_prom(struct iio_dev *indio_dev) +{ + int i, ret; + struct tsys01_dev *dev_data = iio_priv(indio_dev); + char buf[7 * TSYS01_PROM_WORDS_NB + 1]; + char *ptr = buf; + + for (i = 0; i < TSYS01_PROM_WORDS_NB; i++) { + ret = dev_data->read_prom_word(dev_data->client, + TSYS01_PROM_READ + (i << 1), + &dev_data->prom[i]); + if (ret) + return ret; + + ret = sprintf(ptr, "0x%04x ", dev_data->prom[i]); + ptr += ret; + } + + if (!tsys01_crc_valid(dev_data->prom)) { + dev_err(&indio_dev->dev, "prom crc check error\n"); + return -ENODEV; + } + *ptr = 0; + dev_info(&indio_dev->dev, "PROM coefficients : %s\n", buf); + + return 0; +} + +static int tsys01_probe(struct iio_dev *indio_dev, struct device *dev) +{ + int ret; + struct tsys01_dev *dev_data = iio_priv(indio_dev); + + mutex_init(&dev_data->lock); + + indio_dev->info = &tsys01_info; + indio_dev->name = dev->driver->name; + indio_dev->dev.parent = dev; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = tsys01_channels; + indio_dev->num_channels = ARRAY_SIZE(tsys01_channels); + + ret = dev_data->reset(dev_data->client, TSYS01_RESET, 3000); + if (ret) + return ret; + + ret = tsys01_read_prom(indio_dev); + if (ret) + return ret; + + return devm_iio_device_register(dev, indio_dev); +} + +static int tsys01_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct tsys01_dev *dev_data; + struct iio_dev *indio_dev; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_WORD_DATA | + I2C_FUNC_SMBUS_WRITE_BYTE | + I2C_FUNC_SMBUS_READ_I2C_BLOCK)) { + dev_err(&client->dev, + "Adapter does not support some i2c transaction\n"); + return -ENODEV; + } + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*dev_data)); + if (!indio_dev) + return -ENOMEM; + + dev_data = iio_priv(indio_dev); + dev_data->client = client; + dev_data->reset = ms_sensors_reset; + dev_data->read_prom_word = ms_sensors_read_prom_word; + dev_data->convert_and_read = ms_sensors_convert_and_read; + + i2c_set_clientdata(client, indio_dev); + + return tsys01_probe(indio_dev, &client->dev); +} + +static const struct i2c_device_id tsys01_id[] = { + {"tsys01", 0}, + {} +}; +MODULE_DEVICE_TABLE(i2c, tsys01_id); + +static struct i2c_driver tsys01_driver = { + .probe = tsys01_i2c_probe, + .id_table = tsys01_id, + .driver = { + .name = "tsys01", + }, +}; + +module_i2c_driver(tsys01_driver); + +MODULE_DESCRIPTION("Measurement-Specialties tsys01 temperature driver"); +MODULE_AUTHOR("William Markezana <william.markezana@meas-spec.com>"); +MODULE_AUTHOR("Ludovic Tancerel <ludovic.tancerel@maplehightech.com>"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/iio/temperature/tsys02d.c b/drivers/iio/temperature/tsys02d.c new file mode 100644 index 000000000000..4c1fbd52ea08 --- /dev/null +++ b/drivers/iio/temperature/tsys02d.c @@ -0,0 +1,191 @@ +/* + * tsys02d.c - Support for Measurement-Specialties tsys02d temperature sensor + * + * Copyright (c) 2015 Measurement-Specialties + * + * Licensed under the GPL-2. + * + * (7-bit I2C slave address 0x40) + * + * Datasheet: + * http://www.meas-spec.com/downloads/Digital_Sensor_TSYS02D.pdf + */ + +#include <linux/init.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/stat.h> +#include <linux/module.h> +#include <linux/iio/iio.h> +#include <linux/iio/sysfs.h> + +#include "../common/ms_sensors/ms_sensors_i2c.h" + +#define TSYS02D_RESET 0xFE + +static const int tsys02d_samp_freq[4] = { 20, 40, 70, 140 }; +/* String copy of the above const for readability purpose */ +static const char tsys02d_show_samp_freq[] = "20 40 70 140"; + +static int tsys02d_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *channel, int *val, + int *val2, long mask) +{ + int ret; + s32 temperature; + struct ms_ht_dev *dev_data = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_PROCESSED: + switch (channel->type) { + case IIO_TEMP: /* in milli °C */ + ret = ms_sensors_ht_read_temperature(dev_data, + &temperature); + if (ret) + return ret; + *val = temperature; + + return IIO_VAL_INT; + default: + return -EINVAL; + } + case IIO_CHAN_INFO_SAMP_FREQ: + *val = tsys02d_samp_freq[dev_data->res_index]; + + return IIO_VAL_INT; + default: + return -EINVAL; + } +} + +static int tsys02d_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int val, int val2, long mask) +{ + struct ms_ht_dev *dev_data = iio_priv(indio_dev); + int i, ret; + + switch (mask) { + case IIO_CHAN_INFO_SAMP_FREQ: + i = ARRAY_SIZE(tsys02d_samp_freq); + while (i-- > 0) + if (val == tsys02d_samp_freq[i]) + break; + if (i < 0) + return -EINVAL; + mutex_lock(&dev_data->lock); + dev_data->res_index = i; + ret = ms_sensors_write_resolution(dev_data, i); + mutex_unlock(&dev_data->lock); + + return ret; + default: + return -EINVAL; + } +} + +static const struct iio_chan_spec tsys02d_channels[] = { + { + .type = IIO_TEMP, + .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_PROCESSED), + .info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), + } +}; + +static ssize_t tsys02_read_battery_low(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct iio_dev *indio_dev = dev_to_iio_dev(dev); + struct ms_ht_dev *dev_data = iio_priv(indio_dev); + + return ms_sensors_show_battery_low(dev_data, buf); +} + +static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(tsys02d_show_samp_freq); +static IIO_DEVICE_ATTR(battery_low, S_IRUGO, + tsys02_read_battery_low, NULL, 0); + +static struct attribute *tsys02d_attributes[] = { + &iio_const_attr_sampling_frequency_available.dev_attr.attr, + &iio_dev_attr_battery_low.dev_attr.attr, + NULL, +}; + +static const struct attribute_group tsys02d_attribute_group = { + .attrs = tsys02d_attributes, +}; + +static const struct iio_info tsys02d_info = { + .read_raw = tsys02d_read_raw, + .write_raw = tsys02d_write_raw, + .attrs = &tsys02d_attribute_group, + .driver_module = THIS_MODULE, +}; + +static int tsys02d_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct ms_ht_dev *dev_data; + struct iio_dev *indio_dev; + int ret; + u64 serial_number; + + if (!i2c_check_functionality(client->adapter, + I2C_FUNC_SMBUS_WRITE_BYTE_DATA | + I2C_FUNC_SMBUS_WRITE_BYTE | + I2C_FUNC_SMBUS_READ_I2C_BLOCK)) { + dev_err(&client->dev, + "Adapter does not support some i2c transaction\n"); + return -ENODEV; + } + + indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*dev_data)); + if (!indio_dev) + return -ENOMEM; + + dev_data = iio_priv(indio_dev); + dev_data->client = client; + dev_data->res_index = 0; + mutex_init(&dev_data->lock); + + indio_dev->info = &tsys02d_info; + indio_dev->name = id->name; + indio_dev->dev.parent = &client->dev; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = tsys02d_channels; + indio_dev->num_channels = ARRAY_SIZE(tsys02d_channels); + + i2c_set_clientdata(client, indio_dev); + + ret = ms_sensors_reset(client, TSYS02D_RESET, 15000); + if (ret) + return ret; + + ret = ms_sensors_read_serial(client, &serial_number); + if (ret) + return ret; + dev_info(&client->dev, "Serial number : %llx", serial_number); + + return devm_iio_device_register(&client->dev, indio_dev); +} + +static const struct i2c_device_id tsys02d_id[] = { + {"tsys02d", 0}, + {} +}; + +static struct i2c_driver tsys02d_driver = { + .probe = tsys02d_probe, + .id_table = tsys02d_id, + .driver = { + .name = "tsys02d", + }, +}; + +module_i2c_driver(tsys02d_driver); + +MODULE_DESCRIPTION("Measurement-Specialties tsys02d temperature driver"); +MODULE_AUTHOR("William Markezana <william.markezana@meas-spec.com>"); +MODULE_AUTHOR("Ludovic Tancerel <ludovic.tancerel@maplehightech.com>"); +MODULE_LICENSE("GPL v2"); |