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-rw-r--r--drivers/iio/adc/Kconfig2
-rw-r--r--drivers/iio/adc/ina2xx-adc.c11
-rw-r--r--drivers/iio/adc/max1118.c10
-rw-r--r--drivers/iio/adc/mcp3422.c16
-rw-r--r--drivers/iio/adc/meson_saradc.c2
-rw-r--r--drivers/iio/adc/ti-adc081c.c11
-rw-r--r--drivers/iio/adc/ti-adc084s021.c10
-rw-r--r--drivers/iio/adc/ti-ads1015.c10
8 files changed, 52 insertions, 20 deletions
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 66d9cc073157..d94dc800b842 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -865,6 +865,8 @@ config ROCKCHIP_SARADC
tristate "Rockchip SARADC driver"
depends on ARCH_ROCKCHIP || (ARM && COMPILE_TEST)
depends on RESET_CONTROLLER
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
help
Say yes here to build support for the SARADC found in SoCs from
Rockchip.
diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c
index 5ed63e874292..b573ec60a8b8 100644
--- a/drivers/iio/adc/ina2xx-adc.c
+++ b/drivers/iio/adc/ina2xx-adc.c
@@ -146,6 +146,11 @@ struct ina2xx_chip_info {
int range_vbus; /* Bus voltage maximum in V */
int pga_gain_vshunt; /* Shunt voltage PGA gain */
bool allow_async_readout;
+ /* data buffer needs space for channel data and timestamp */
+ struct {
+ u16 chan[4];
+ u64 ts __aligned(8);
+ } scan;
};
static const struct ina2xx_config ina2xx_config[] = {
@@ -738,8 +743,6 @@ static int ina2xx_conversion_ready(struct iio_dev *indio_dev)
static int ina2xx_work_buffer(struct iio_dev *indio_dev)
{
struct ina2xx_chip_info *chip = iio_priv(indio_dev);
- /* data buffer needs space for channel data and timestap */
- unsigned short data[4 + sizeof(s64)/sizeof(short)];
int bit, ret, i = 0;
s64 time;
@@ -758,10 +761,10 @@ static int ina2xx_work_buffer(struct iio_dev *indio_dev)
if (ret < 0)
return ret;
- data[i++] = val;
+ chip->scan.chan[i++] = val;
}
- iio_push_to_buffers_with_timestamp(indio_dev, data, time);
+ iio_push_to_buffers_with_timestamp(indio_dev, &chip->scan, time);
return 0;
};
diff --git a/drivers/iio/adc/max1118.c b/drivers/iio/adc/max1118.c
index 01b20e420ac4..6efb0b43d938 100644
--- a/drivers/iio/adc/max1118.c
+++ b/drivers/iio/adc/max1118.c
@@ -36,6 +36,11 @@ struct max1118 {
struct spi_device *spi;
struct mutex lock;
struct regulator *reg;
+ /* Ensure natural alignment of buffer elements */
+ struct {
+ u8 channels[2];
+ s64 ts __aligned(8);
+ } scan;
u8 data ____cacheline_aligned;
};
@@ -166,7 +171,6 @@ static irqreturn_t max1118_trigger_handler(int irq, void *p)
struct iio_poll_func *pf = p;
struct iio_dev *indio_dev = pf->indio_dev;
struct max1118 *adc = iio_priv(indio_dev);
- u8 data[16] = { }; /* 2x 8-bit ADC data + padding + 8 bytes timestamp */
int scan_index;
int i = 0;
@@ -184,10 +188,10 @@ static irqreturn_t max1118_trigger_handler(int irq, void *p)
goto out;
}
- data[i] = ret;
+ adc->scan.channels[i] = ret;
i++;
}
- iio_push_to_buffers_with_timestamp(indio_dev, data,
+ iio_push_to_buffers_with_timestamp(indio_dev, &adc->scan,
iio_get_time_ns(indio_dev));
out:
mutex_unlock(&adc->lock);
diff --git a/drivers/iio/adc/mcp3422.c b/drivers/iio/adc/mcp3422.c
index 5f1706d1c3c0..da353dcb1e9d 100644
--- a/drivers/iio/adc/mcp3422.c
+++ b/drivers/iio/adc/mcp3422.c
@@ -96,16 +96,12 @@ static int mcp3422_update_config(struct mcp3422 *adc, u8 newconfig)
{
int ret;
- mutex_lock(&adc->lock);
-
ret = i2c_master_send(adc->i2c, &newconfig, 1);
if (ret > 0) {
adc->config = newconfig;
ret = 0;
}
- mutex_unlock(&adc->lock);
-
return ret;
}
@@ -138,6 +134,8 @@ static int mcp3422_read_channel(struct mcp3422 *adc,
u8 config;
u8 req_channel = channel->channel;
+ mutex_lock(&adc->lock);
+
if (req_channel != MCP3422_CHANNEL(adc->config)) {
config = adc->config;
config &= ~MCP3422_CHANNEL_MASK;
@@ -145,12 +143,18 @@ static int mcp3422_read_channel(struct mcp3422 *adc,
config &= ~MCP3422_PGA_MASK;
config |= MCP3422_PGA_VALUE(adc->pga[req_channel]);
ret = mcp3422_update_config(adc, config);
- if (ret < 0)
+ if (ret < 0) {
+ mutex_unlock(&adc->lock);
return ret;
+ }
msleep(mcp3422_read_times[MCP3422_SAMPLE_RATE(adc->config)]);
}
- return mcp3422_read(adc, value, &config);
+ ret = mcp3422_read(adc, value, &config);
+
+ mutex_unlock(&adc->lock);
+
+ return ret;
}
static int mcp3422_read_raw(struct iio_dev *iio,
diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c
index 93c2252c0b89..1a9189ba69ae 100644
--- a/drivers/iio/adc/meson_saradc.c
+++ b/drivers/iio/adc/meson_saradc.c
@@ -707,7 +707,7 @@ static int meson_sar_adc_temp_sensor_init(struct iio_dev *indio_dev)
size_t read_len;
int ret;
- temperature_calib = devm_nvmem_cell_get(&indio_dev->dev,
+ temperature_calib = devm_nvmem_cell_get(indio_dev->dev.parent,
"temperature_calib");
if (IS_ERR(temperature_calib)) {
ret = PTR_ERR(temperature_calib);
diff --git a/drivers/iio/adc/ti-adc081c.c b/drivers/iio/adc/ti-adc081c.c
index 9426f70a8005..cf63983a54d9 100644
--- a/drivers/iio/adc/ti-adc081c.c
+++ b/drivers/iio/adc/ti-adc081c.c
@@ -33,6 +33,12 @@ struct adc081c {
/* 8, 10 or 12 */
int bits;
+
+ /* Ensure natural alignment of buffer elements */
+ struct {
+ u16 channel;
+ s64 ts __aligned(8);
+ } scan;
};
#define REG_CONV_RES 0x00
@@ -128,14 +134,13 @@ static irqreturn_t adc081c_trigger_handler(int irq, void *p)
struct iio_poll_func *pf = p;
struct iio_dev *indio_dev = pf->indio_dev;
struct adc081c *data = iio_priv(indio_dev);
- u16 buf[8]; /* 2 bytes data + 6 bytes padding + 8 bytes timestamp */
int ret;
ret = i2c_smbus_read_word_swapped(data->i2c, REG_CONV_RES);
if (ret < 0)
goto out;
- buf[0] = ret;
- iio_push_to_buffers_with_timestamp(indio_dev, buf,
+ data->scan.channel = ret;
+ iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
iio_get_time_ns(indio_dev));
out:
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/adc/ti-adc084s021.c b/drivers/iio/adc/ti-adc084s021.c
index 9017e1e24273..dfba34834a57 100644
--- a/drivers/iio/adc/ti-adc084s021.c
+++ b/drivers/iio/adc/ti-adc084s021.c
@@ -26,6 +26,11 @@ struct adc084s021 {
struct spi_transfer spi_trans;
struct regulator *reg;
struct mutex lock;
+ /* Buffer used to align data */
+ struct {
+ __be16 channels[4];
+ s64 ts __aligned(8);
+ } scan;
/*
* DMA (thus cache coherency maintenance) requires the
* transfer buffers to live in their own cache line.
@@ -141,14 +146,13 @@ static irqreturn_t adc084s021_buffer_trigger_handler(int irq, void *pollfunc)
struct iio_poll_func *pf = pollfunc;
struct iio_dev *indio_dev = pf->indio_dev;
struct adc084s021 *adc = iio_priv(indio_dev);
- __be16 data[8] = {0}; /* 4 * 16-bit words of data + 8 bytes timestamp */
mutex_lock(&adc->lock);
- if (adc084s021_adc_conversion(adc, &data) < 0)
+ if (adc084s021_adc_conversion(adc, adc->scan.channels) < 0)
dev_err(&adc->spi->dev, "Failed to read data\n");
- iio_push_to_buffers_with_timestamp(indio_dev, data,
+ iio_push_to_buffers_with_timestamp(indio_dev, &adc->scan,
iio_get_time_ns(indio_dev));
mutex_unlock(&adc->lock);
iio_trigger_notify_done(indio_dev->trig);
diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c
index f42ab112986e..9fef39bcf997 100644
--- a/drivers/iio/adc/ti-ads1015.c
+++ b/drivers/iio/adc/ti-ads1015.c
@@ -316,6 +316,7 @@ static const struct iio_chan_spec ads1115_channels[] = {
IIO_CHAN_SOFT_TIMESTAMP(ADS1015_TIMESTAMP),
};
+#ifdef CONFIG_PM
static int ads1015_set_power_state(struct ads1015_data *data, bool on)
{
int ret;
@@ -333,6 +334,15 @@ static int ads1015_set_power_state(struct ads1015_data *data, bool on)
return ret < 0 ? ret : 0;
}
+#else /* !CONFIG_PM */
+
+static int ads1015_set_power_state(struct ads1015_data *data, bool on)
+{
+ return 0;
+}
+
+#endif /* !CONFIG_PM */
+
static
int ads1015_get_adc_result(struct ads1015_data *data, int chan, int *val)
{
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-23 20:28:59 +0300