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iio: pressure: bmp280: Introduce new cleanup routines

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Introduce new linux/cleanup.h with the guard(mutex) functionality.

Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Suggested-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Vasileios Amoiridis <vassilisamir@gmail.com>
Link: https://lore.kernel.org/r/20240512230524.53990-3-vassilisamir@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Vasileios Amoiridis 2024-05-13 01:05:21 +02:00 committed by Jonathan Cameron
parent 5d6e6c6ec4
commit d174ebd412
1 changed files with 110 additions and 107 deletions
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217
drivers/iio/pressure/bmp280-core.c
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@ -27,6 +27,7 @@
#include <linux/bitops.h>
#include <linux/bitfield.h>
#include <linux/cleanup.h>
#include <linux/completion.h>
#include <linux/delay.h>
#include <linux/device.h>
@ -505,6 +506,58 @@ static int bme280_read_humid(struct bmp280_data *data, int *val, int *val2)
return IIO_VAL_INT;
}
static int bmp280_read_raw_impl(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int *val, int *val2, long mask)
{
struct bmp280_data *data = iio_priv(indio_dev);
guard(mutex)(&data->lock);
switch (mask) {
case IIO_CHAN_INFO_PROCESSED:
switch (chan->type) {
case IIO_HUMIDITYRELATIVE:
return data->chip_info->read_humid(data, val, val2);
case IIO_PRESSURE:
return data->chip_info->read_press(data, val, val2);
case IIO_TEMP:
return data->chip_info->read_temp(data, val, val2);
default:
return -EINVAL;
}
case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
switch (chan->type) {
case IIO_HUMIDITYRELATIVE:
*val = 1 << data->oversampling_humid;
return IIO_VAL_INT;
case IIO_PRESSURE:
*val = 1 << data->oversampling_press;
return IIO_VAL_INT;
case IIO_TEMP:
*val = 1 << data->oversampling_temp;
return IIO_VAL_INT;
default:
return -EINVAL;
}
case IIO_CHAN_INFO_SAMP_FREQ:
if (!data->chip_info->sampling_freq_avail)
return -EINVAL;
*val = data->chip_info->sampling_freq_avail[data->sampling_freq][0];
*val2 = data->chip_info->sampling_freq_avail[data->sampling_freq][1];
return IIO_VAL_INT_PLUS_MICRO;
case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
if (!data->chip_info->iir_filter_coeffs_avail)
return -EINVAL;
*val = (1 << data->iir_filter_coeff) - 1;
return IIO_VAL_INT;
default:
return -EINVAL;
}
}
static int bmp280_read_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int *val, int *val2, long mask)
@ -513,69 +566,7 @@ static int bmp280_read_raw(struct iio_dev *indio_dev,
int ret;
pm_runtime_get_sync(data->dev);
mutex_lock(&data->lock);
switch (mask) {
case IIO_CHAN_INFO_PROCESSED:
switch (chan->type) {
case IIO_HUMIDITYRELATIVE:
ret = data->chip_info->read_humid(data, val, val2);
break;
case IIO_PRESSURE:
ret = data->chip_info->read_press(data, val, val2);
break;
case IIO_TEMP:
ret = data->chip_info->read_temp(data, val, val2);
break;
default:
ret = -EINVAL;
break;
}
break;
case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
switch (chan->type) {
case IIO_HUMIDITYRELATIVE:
*val = 1 << data->oversampling_humid;
ret = IIO_VAL_INT;
break;
case IIO_PRESSURE:
*val = 1 << data->oversampling_press;
ret = IIO_VAL_INT;
break;
case IIO_TEMP:
*val = 1 << data->oversampling_temp;
ret = IIO_VAL_INT;
break;
default:
ret = -EINVAL;
break;
}
break;
case IIO_CHAN_INFO_SAMP_FREQ:
if (!data->chip_info->sampling_freq_avail) {
ret = -EINVAL;
break;
}
*val = data->chip_info->sampling_freq_avail[data->sampling_freq][0];
*val2 = data->chip_info->sampling_freq_avail[data->sampling_freq][1];
ret = IIO_VAL_INT_PLUS_MICRO;
break;
case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
if (!data->chip_info->iir_filter_coeffs_avail) {
ret = -EINVAL;
break;
}
*val = (1 << data->iir_filter_coeff) - 1;
ret = IIO_VAL_INT;
break;
default:
ret = -EINVAL;
break;
}
mutex_unlock(&data->lock);
ret = bmp280_read_raw_impl(indio_dev, chan, val, val2, mask);
pm_runtime_mark_last_busy(data->dev);
pm_runtime_put_autosuspend(data->dev);
@ -707,12 +698,13 @@ static int bmp280_write_iir_filter_coeffs(struct bmp280_data *data, int val)
return -EINVAL;
}
static int bmp280_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int val, int val2, long mask)
static int bmp280_write_raw_impl(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int val, int val2, long mask)
{
struct bmp280_data *data = iio_priv(indio_dev);
int ret = 0;
guard(mutex)(&data->lock);
/*
* Helper functions to update sensor running configuration.
@ -722,45 +714,36 @@ static int bmp280_write_raw(struct iio_dev *indio_dev,
*/
switch (mask) {
case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
pm_runtime_get_sync(data->dev);
mutex_lock(&data->lock);
switch (chan->type) {
case IIO_HUMIDITYRELATIVE:
ret = bme280_write_oversampling_ratio_humid(data, val);
break;
return bme280_write_oversampling_ratio_humid(data, val);
case IIO_PRESSURE:
ret = bmp280_write_oversampling_ratio_press(data, val);
break;
return bmp280_write_oversampling_ratio_press(data, val);
case IIO_TEMP:
ret = bmp280_write_oversampling_ratio_temp(data, val);
break;
return bmp280_write_oversampling_ratio_temp(data, val);
default:
ret = -EINVAL;
break;
return -EINVAL;
}
mutex_unlock(&data->lock);
pm_runtime_mark_last_busy(data->dev);
pm_runtime_put_autosuspend(data->dev);
break;
case IIO_CHAN_INFO_SAMP_FREQ:
pm_runtime_get_sync(data->dev);
mutex_lock(&data->lock);
ret = bmp280_write_sampling_frequency(data, val, val2);
mutex_unlock(&data->lock);
pm_runtime_mark_last_busy(data->dev);
pm_runtime_put_autosuspend(data->dev);
break;
return bmp280_write_sampling_frequency(data, val, val2);
case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
pm_runtime_get_sync(data->dev);
mutex_lock(&data->lock);
ret = bmp280_write_iir_filter_coeffs(data, val);
mutex_unlock(&data->lock);
pm_runtime_mark_last_busy(data->dev);
pm_runtime_put_autosuspend(data->dev);
break;
return bmp280_write_iir_filter_coeffs(data, val);
default:
return -EINVAL;
}
}
static int bmp280_write_raw(struct iio_dev *indio_dev,
struct iio_chan_spec const *chan,
int val, int val2, long mask)
{
struct bmp280_data *data = iio_priv(indio_dev);
int ret;
pm_runtime_get_sync(data->dev);
ret = bmp280_write_raw_impl(indio_dev, chan, val, val2, mask);
pm_runtime_mark_last_busy(data->dev);
pm_runtime_put_autosuspend(data->dev);
return ret;
}
@ -1551,15 +1534,14 @@ static const int bmp580_odr_table[][2] = {
static const int bmp580_nvmem_addrs[] = { 0x20, 0x21, 0x22 };
static int bmp580_nvmem_read(void *priv, unsigned int offset, void *val,
size_t bytes)
static int bmp580_nvmem_read_impl(void *priv, unsigned int offset, void *val,
size_t bytes)
{
struct bmp280_data *data = priv;
u16 *dst = val;
int ret, addr;
pm_runtime_get_sync(data->dev);
mutex_lock(&data->lock);
guard(mutex)(&data->lock);
/* Set sensor in standby mode */
ret = regmap_update_bits(data->regmap, BMP580_REG_ODR_CONFIG,
@ -1601,21 +1583,31 @@ static int bmp580_nvmem_read(void *priv, unsigned int offset, void *val,
exit:
/* Restore chip config */
data->chip_info->chip_config(data);
mutex_unlock(&data->lock);
pm_runtime_mark_last_busy(data->dev);
pm_runtime_put_autosuspend(data->dev);
return ret;
}
static int bmp580_nvmem_write(void *priv, unsigned int offset, void *val,
size_t bytes)
static int bmp580_nvmem_read(void *priv, unsigned int offset, void *val,
size_t bytes)
{
struct bmp280_data *data = priv;
int ret;
pm_runtime_get_sync(data->dev);
ret = bmp580_nvmem_read_impl(priv, offset, val, bytes);
pm_runtime_mark_last_busy(data->dev);
pm_runtime_put_autosuspend(data->dev);
return ret;
}
static int bmp580_nvmem_write_impl(void *priv, unsigned int offset, void *val,
size_t bytes)
{
struct bmp280_data *data = priv;
u16 *buf = val;
int ret, addr;
pm_runtime_get_sync(data->dev);
mutex_lock(&data->lock);
guard(mutex)(&data->lock);
/* Set sensor in standby mode */
ret = regmap_update_bits(data->regmap, BMP580_REG_ODR_CONFIG,
@ -1666,9 +1658,20 @@ static int bmp580_nvmem_write(void *priv, unsigned int offset, void *val,
exit:
/* Restore chip config */
data->chip_info->chip_config(data);
mutex_unlock(&data->lock);
return ret;
}
static int bmp580_nvmem_write(void *priv, unsigned int offset, void *val,
size_t bytes)
{
struct bmp280_data *data = priv;
int ret;
pm_runtime_get_sync(data->dev);
ret = bmp580_nvmem_write_impl(priv, offset, val, bytes);
pm_runtime_mark_last_busy(data->dev);
pm_runtime_put_autosuspend(data->dev);
return ret;
}