Commit a0175b9c authored by Linus Walleij's avatar Linus Walleij Committed by Jonathan Cameron

iio: st_sensors: add debugfs register read hook

This adds a debugfs hook to read/write registers in the ST
sensors using debugfs. Proved to be awesome help when trying
to debug why IRQs do not arrive.
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Acked-by: default avatarDenis Ciocca <denis.ciocca@st.com>
Signed-off-by: default avatarJonathan Cameron <jic23@kernel.org>
parent 8d96fc27
......@@ -618,6 +618,7 @@ 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
......
......@@ -44,6 +44,28 @@ static int st_sensors_write_data_with_mask(struct iio_dev *indio_dev,
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)
{
......
......@@ -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
......
......@@ -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
......
......@@ -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
......
......@@ -271,6 +271,10 @@ void st_sensors_power_enable(struct iio_dev *indio_dev);
void st_sensors_power_disable(struct iio_dev *indio_dev);
int st_sensors_debugfs_reg_access(struct iio_dev *indio_dev,
unsigned reg, unsigned writeval,
unsigned *readval);
int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr);
int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable);
......
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