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-rw-r--r--drivers/iio/accel/Kconfig4
-rw-r--r--drivers/iio/accel/adxl345.h7
-rw-r--r--drivers/iio/accel/adxl345_core.c140
-rw-r--r--drivers/iio/accel/adxl345_i2c.c7
-rw-r--r--drivers/iio/accel/adxl345_spi.c6
-rw-r--r--drivers/iio/accel/mma8452.c1
-rw-r--r--drivers/iio/accel/sca3000.c1
-rw-r--r--drivers/iio/accel/st_accel_i2c.c64
8 files changed, 173 insertions, 57 deletions
diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index 62ae7e5abcfa..829dc96c9dd6 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -40,7 +40,7 @@ config ADXL345_I2C
select REGMAP_I2C
help
Say Y here if you want to build support for the Analog Devices
- ADXL345 3-axis digital accelerometer.
+ ADXL345 or ADXL375 3-axis digital accelerometer.
To compile this driver as a module, choose M here: the module
will be called adxl345_i2c and you will also get adxl345_core
@@ -54,7 +54,7 @@ config ADXL345_SPI
select REGMAP_SPI
help
Say Y here if you want to build support for the Analog Devices
- ADXL345 3-axis digital accelerometer.
+ ADXL345 or ADXL375 3-axis digital accelerometer.
To compile this driver as a module, choose M here: the module
will be called adxl345_spi and you will also get adxl345_core
diff --git a/drivers/iio/accel/adxl345.h b/drivers/iio/accel/adxl345.h
index c1ddf3927c47..ccd63de7a55a 100644
--- a/drivers/iio/accel/adxl345.h
+++ b/drivers/iio/accel/adxl345.h
@@ -11,8 +11,13 @@
#ifndef _ADXL345_H_
#define _ADXL345_H_
+enum adxl345_device_type {
+ ADXL345,
+ ADXL375,
+};
+
int adxl345_core_probe(struct device *dev, struct regmap *regmap,
- const char *name);
+ enum adxl345_device_type type, const char *name);
int adxl345_core_remove(struct device *dev);
#endif /* _ADXL345_H_ */
diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c
index 7251d0e63d74..780f87f72338 100644
--- a/drivers/iio/accel/adxl345_core.c
+++ b/drivers/iio/accel/adxl345_core.c
@@ -6,21 +6,35 @@
* 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
* directory of this archive for more details.
+ *
+ * Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/ADXL345.pdf
*/
#include <linux/module.h>
#include <linux/regmap.h>
#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
#include "adxl345.h"
#define ADXL345_REG_DEVID 0x00
+#define ADXL345_REG_OFSX 0x1e
+#define ADXL345_REG_OFSY 0x1f
+#define ADXL345_REG_OFSZ 0x20
+#define ADXL345_REG_OFS_AXIS(index) (ADXL345_REG_OFSX + (index))
+#define ADXL345_REG_BW_RATE 0x2C
#define ADXL345_REG_POWER_CTL 0x2D
#define ADXL345_REG_DATA_FORMAT 0x31
#define ADXL345_REG_DATAX0 0x32
#define ADXL345_REG_DATAY0 0x34
#define ADXL345_REG_DATAZ0 0x36
+#define ADXL345_REG_DATA_AXIS(index) \
+ (ADXL345_REG_DATAX0 + (index) * sizeof(__le16))
+
+#define ADXL345_BW_RATE GENMASK(3, 0)
+#define ADXL345_BASE_RATE_NANO_HZ 97656250LL
+#define NHZ_PER_HZ 1000000000LL
#define ADXL345_POWER_CTL_MEASURE BIT(3)
#define ADXL345_POWER_CTL_STANDBY 0x00
@@ -42,24 +56,33 @@
*/
static const int adxl345_uscale = 38300;
+/*
+ * The Datasheet lists a resolution of Resolution is ~49 mg per LSB. That's
+ * ~480mm/s**2 per LSB.
+ */
+static const int adxl375_uscale = 480000;
+
struct adxl345_data {
struct regmap *regmap;
u8 data_range;
+ enum adxl345_device_type type;
};
-#define ADXL345_CHANNEL(reg, axis) { \
+#define ADXL345_CHANNEL(index, axis) { \
.type = IIO_ACCEL, \
.modified = 1, \
.channel2 = IIO_MOD_##axis, \
- .address = reg, \
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
- .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+ .address = index, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+ BIT(IIO_CHAN_INFO_CALIBBIAS), \
+ .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
+ BIT(IIO_CHAN_INFO_SAMP_FREQ), \
}
static const struct iio_chan_spec adxl345_channels[] = {
- ADXL345_CHANNEL(ADXL345_REG_DATAX0, X),
- ADXL345_CHANNEL(ADXL345_REG_DATAY0, Y),
- ADXL345_CHANNEL(ADXL345_REG_DATAZ0, Z),
+ ADXL345_CHANNEL(0, X),
+ ADXL345_CHANNEL(1, Y),
+ ADXL345_CHANNEL(2, Z),
};
static int adxl345_read_raw(struct iio_dev *indio_dev,
@@ -67,7 +90,9 @@ static int adxl345_read_raw(struct iio_dev *indio_dev,
int *val, int *val2, long mask)
{
struct adxl345_data *data = iio_priv(indio_dev);
- __le16 regval;
+ __le16 accel;
+ long long samp_freq_nhz;
+ unsigned int regval;
int ret;
switch (mask) {
@@ -77,29 +102,117 @@ static int adxl345_read_raw(struct iio_dev *indio_dev,
* ADXL345_REG_DATA(X0/Y0/Z0) contain the least significant byte
* and ADXL345_REG_DATA(X0/Y0/Z0) + 1 the most significant byte
*/
- ret = regmap_bulk_read(data->regmap, chan->address, &regval,
- sizeof(regval));
+ ret = regmap_bulk_read(data->regmap,
+ ADXL345_REG_DATA_AXIS(chan->address),
+ &accel, sizeof(accel));
if (ret < 0)
return ret;
- *val = sign_extend32(le16_to_cpu(regval), 12);
+ *val = sign_extend32(le16_to_cpu(accel), 12);
return IIO_VAL_INT;
case IIO_CHAN_INFO_SCALE:
*val = 0;
- *val2 = adxl345_uscale;
+ switch (data->type) {
+ case ADXL345:
+ *val2 = adxl345_uscale;
+ break;
+ case ADXL375:
+ *val2 = adxl375_uscale;
+ break;
+ }
return IIO_VAL_INT_PLUS_MICRO;
+ case IIO_CHAN_INFO_CALIBBIAS:
+ ret = regmap_read(data->regmap,
+ ADXL345_REG_OFS_AXIS(chan->address), &regval);
+ if (ret < 0)
+ return ret;
+ /*
+ * 8-bit resolution at +/- 2g, that is 4x accel data scale
+ * factor
+ */
+ *val = sign_extend32(regval, 7) * 4;
+
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ ret = regmap_read(data->regmap, ADXL345_REG_BW_RATE, &regval);
+ if (ret < 0)
+ return ret;
+
+ samp_freq_nhz = ADXL345_BASE_RATE_NANO_HZ <<
+ (regval & ADXL345_BW_RATE);
+ *val = div_s64_rem(samp_freq_nhz, NHZ_PER_HZ, val2);
+
+ return IIO_VAL_INT_PLUS_NANO;
}
return -EINVAL;
}
+static int adxl345_write_raw(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ int val, int val2, long mask)
+{
+ struct adxl345_data *data = iio_priv(indio_dev);
+ s64 n;
+
+ switch (mask) {
+ case IIO_CHAN_INFO_CALIBBIAS:
+ /*
+ * 8-bit resolution at +/- 2g, that is 4x accel data scale
+ * factor
+ */
+ return regmap_write(data->regmap,
+ ADXL345_REG_OFS_AXIS(chan->address),
+ val / 4);
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ n = div_s64(val * NHZ_PER_HZ + val2, ADXL345_BASE_RATE_NANO_HZ);
+
+ return regmap_update_bits(data->regmap, ADXL345_REG_BW_RATE,
+ ADXL345_BW_RATE,
+ clamp_val(ilog2(n), 0,
+ ADXL345_BW_RATE));
+ }
+
+ return -EINVAL;
+}
+
+static int adxl345_write_raw_get_fmt(struct iio_dev *indio_dev,
+ struct iio_chan_spec const *chan,
+ long mask)
+{
+ switch (mask) {
+ case IIO_CHAN_INFO_CALIBBIAS:
+ return IIO_VAL_INT;
+ case IIO_CHAN_INFO_SAMP_FREQ:
+ return IIO_VAL_INT_PLUS_NANO;
+ default:
+ return -EINVAL;
+ }
+}
+
+static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
+"0.09765625 0.1953125 0.390625 0.78125 1.5625 3.125 6.25 12.5 25 50 100 200 400 800 1600 3200"
+);
+
+static struct attribute *adxl345_attrs[] = {
+ &iio_const_attr_sampling_frequency_available.dev_attr.attr,
+ NULL,
+};
+
+static const struct attribute_group adxl345_attrs_group = {
+ .attrs = adxl345_attrs,
+};
+
static const struct iio_info adxl345_info = {
+ .attrs = &adxl345_attrs_group,
.read_raw = adxl345_read_raw,
+ .write_raw = adxl345_write_raw,
+ .write_raw_get_fmt = adxl345_write_raw_get_fmt,
};
int adxl345_core_probe(struct device *dev, struct regmap *regmap,
- const char *name)
+ enum adxl345_device_type type, const char *name)
{
struct adxl345_data *data;
struct iio_dev *indio_dev;
@@ -125,6 +238,7 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap,
data = iio_priv(indio_dev);
dev_set_drvdata(dev, indio_dev);
data->regmap = regmap;
+ data->type = type;
/* Enable full-resolution mode */
data->data_range = ADXL345_DATA_FORMAT_FULL_RES;
diff --git a/drivers/iio/accel/adxl345_i2c.c b/drivers/iio/accel/adxl345_i2c.c
index 05e1ec49700c..785c89de91e7 100644
--- a/drivers/iio/accel/adxl345_i2c.c
+++ b/drivers/iio/accel/adxl345_i2c.c
@@ -34,7 +34,8 @@ static int adxl345_i2c_probe(struct i2c_client *client,
return PTR_ERR(regmap);
}
- return adxl345_core_probe(&client->dev, regmap, id ? id->name : NULL);
+ return adxl345_core_probe(&client->dev, regmap, id->driver_data,
+ id ? id->name : NULL);
}
static int adxl345_i2c_remove(struct i2c_client *client)
@@ -43,7 +44,8 @@ static int adxl345_i2c_remove(struct i2c_client *client)
}
static const struct i2c_device_id adxl345_i2c_id[] = {
- { "adxl345", 0 },
+ { "adxl345", ADXL345 },
+ { "adxl375", ADXL375 },
{ }
};
@@ -51,6 +53,7 @@ MODULE_DEVICE_TABLE(i2c, adxl345_i2c_id);
static const struct of_device_id adxl345_of_match[] = {
{ .compatible = "adi,adxl345" },
+ { .compatible = "adi,adxl375" },
{ },
};
diff --git a/drivers/iio/accel/adxl345_spi.c b/drivers/iio/accel/adxl345_spi.c
index 6d658196f81c..67b7c66a8492 100644
--- a/drivers/iio/accel/adxl345_spi.c
+++ b/drivers/iio/accel/adxl345_spi.c
@@ -42,7 +42,7 @@ static int adxl345_spi_probe(struct spi_device *spi)
return PTR_ERR(regmap);
}
- return adxl345_core_probe(&spi->dev, regmap, id->name);
+ return adxl345_core_probe(&spi->dev, regmap, id->driver_data, id->name);
}
static int adxl345_spi_remove(struct spi_device *spi)
@@ -51,7 +51,8 @@ static int adxl345_spi_remove(struct spi_device *spi)
}
static const struct spi_device_id adxl345_spi_id[] = {
- { "adxl345", 0 },
+ { "adxl345", ADXL345 },
+ { "adxl375", ADXL375 },
{ }
};
@@ -59,6 +60,7 @@ MODULE_DEVICE_TABLE(spi, adxl345_spi_id);
static const struct of_device_id adxl345_of_match[] = {
{ .compatible = "adi,adxl345" },
+ { .compatible = "adi,adxl375" },
{ },
};
diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
index c149c9c360fc..421a0a8a1379 100644
--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -1547,6 +1547,7 @@ static int mma8452_probe(struct i2c_client *client,
case FXLS8471_DEVICE_ID:
if (ret == data->chip_info->chip_id)
break;
+ /* else: fall through */
default:
return -ENODEV;
}
diff --git a/drivers/iio/accel/sca3000.c b/drivers/iio/accel/sca3000.c
index 4dceb75e3586..4964561595f5 100644
--- a/drivers/iio/accel/sca3000.c
+++ b/drivers/iio/accel/sca3000.c
@@ -797,6 +797,7 @@ static int sca3000_write_raw(struct iio_dev *indio_dev,
mutex_lock(&st->lock);
ret = sca3000_write_3db_freq(st, val);
mutex_unlock(&st->lock);
+ return ret;
default:
return -EINVAL;
}
diff --git a/drivers/iio/accel/st_accel_i2c.c b/drivers/iio/accel/st_accel_i2c.c
index 056dddb27236..2ca5d1f6ade0 100644
--- a/drivers/iio/accel/st_accel_i2c.c
+++ b/drivers/iio/accel/st_accel_i2c.c
@@ -14,8 +14,8 @@
#include <linux/acpi.h>
#include <linux/i2c.h>
#include <linux/iio/iio.h>
+#include <linux/property.h>
-#include <linux/iio/common/st_sensors.h>
#include <linux/iio/common/st_sensors_i2c.h>
#include "st_accel.h"
@@ -107,8 +107,8 @@ MODULE_DEVICE_TABLE(of, st_accel_of_match);
#ifdef CONFIG_ACPI
static const struct acpi_device_id st_accel_acpi_match[] = {
- {"SMO8840", LNG2DM},
- {"SMO8A90", LNG2DM},
+ {"SMO8840", (kernel_ulong_t)LNG2DM_ACCEL_DEV_NAME},
+ {"SMO8A90", (kernel_ulong_t)LNG2DM_ACCEL_DEV_NAME},
{ },
};
MODULE_DEVICE_TABLE(acpi, st_accel_acpi_match);
@@ -117,33 +117,33 @@ MODULE_DEVICE_TABLE(acpi, st_accel_acpi_match);
#endif
static const struct i2c_device_id st_accel_id_table[] = {
- { LSM303DLH_ACCEL_DEV_NAME, LSM303DLH },
- { LSM303DLHC_ACCEL_DEV_NAME, LSM303DLHC },
- { LIS3DH_ACCEL_DEV_NAME, LIS3DH },
- { LSM330D_ACCEL_DEV_NAME, LSM330D },
- { LSM330DL_ACCEL_DEV_NAME, LSM330DL },
- { LSM330DLC_ACCEL_DEV_NAME, LSM330DLC },
- { LIS331DLH_ACCEL_DEV_NAME, LIS331DLH },
- { LSM303DL_ACCEL_DEV_NAME, LSM303DL },
- { LSM303DLM_ACCEL_DEV_NAME, LSM303DLM },
- { LSM330_ACCEL_DEV_NAME, LSM330 },
- { LSM303AGR_ACCEL_DEV_NAME, LSM303AGR },
- { LIS2DH12_ACCEL_DEV_NAME, LIS2DH12 },
- { LIS3L02DQ_ACCEL_DEV_NAME, LIS3L02DQ },
- { LNG2DM_ACCEL_DEV_NAME, LNG2DM },
- { H3LIS331DL_ACCEL_DEV_NAME, H3LIS331DL },
- { LIS331DL_ACCEL_DEV_NAME, LIS331DL },
- { LIS3LV02DL_ACCEL_DEV_NAME, LIS3LV02DL },
- { LIS2DW12_ACCEL_DEV_NAME, LIS2DW12 },
+ { LSM303DLH_ACCEL_DEV_NAME },
+ { LSM303DLHC_ACCEL_DEV_NAME },
+ { LIS3DH_ACCEL_DEV_NAME },
+ { LSM330D_ACCEL_DEV_NAME },
+ { LSM330DL_ACCEL_DEV_NAME },
+ { LSM330DLC_ACCEL_DEV_NAME },
+ { LIS331DLH_ACCEL_DEV_NAME },
+ { LSM303DL_ACCEL_DEV_NAME },
+ { LSM303DLM_ACCEL_DEV_NAME },
+ { LSM330_ACCEL_DEV_NAME },
+ { LSM303AGR_ACCEL_DEV_NAME },
+ { LIS2DH12_ACCEL_DEV_NAME },
+ { LIS3L02DQ_ACCEL_DEV_NAME },
+ { LNG2DM_ACCEL_DEV_NAME },
+ { H3LIS331DL_ACCEL_DEV_NAME },
+ { LIS331DL_ACCEL_DEV_NAME },
+ { LIS3LV02DL_ACCEL_DEV_NAME },
+ { LIS2DW12_ACCEL_DEV_NAME },
{},
};
MODULE_DEVICE_TABLE(i2c, st_accel_id_table);
-static int st_accel_i2c_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
+static int st_accel_i2c_probe(struct i2c_client *client)
{
struct iio_dev *indio_dev;
struct st_sensor_data *adata;
+ const char *match;
int ret;
indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*adata));
@@ -152,19 +152,9 @@ static int st_accel_i2c_probe(struct i2c_client *client,
adata = iio_priv(indio_dev);
- if (client->dev.of_node) {
- st_sensors_of_name_probe(&client->dev, st_accel_of_match,
- client->name, sizeof(client->name));
- } else if (ACPI_HANDLE(&client->dev)) {
- ret = st_sensors_match_acpi_device(&client->dev);
- if ((ret < 0) || (ret >= ST_ACCEL_MAX))
- return -ENODEV;
-
- strlcpy(client->name, st_accel_id_table[ret].name,
- sizeof(client->name));
- } else if (!id)
- return -ENODEV;
-
+ match = device_get_match_data(&client->dev);
+ if (match)
+ strlcpy(client->name, match, sizeof(client->name));
st_sensors_i2c_configure(indio_dev, client, adata);
@@ -188,7 +178,7 @@ static struct i2c_driver st_accel_driver = {
.of_match_table = of_match_ptr(st_accel_of_match),
.acpi_match_table = ACPI_PTR(st_accel_acpi_match),
},
- .probe = st_accel_i2c_probe,
+ .probe_new = st_accel_i2c_probe,
.remove = st_accel_i2c_remove,
.id_table = st_accel_id_table,
};
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-28 23:29:40 +0300