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

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

drivers/iio/accel/st_accel_core.c

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/iio/common/st_sensors/st_sensors_core.c

+22 −0
Original line number Diff line number Diff line
@@ -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)

{

drivers/iio/gyro/st_gyro_core.c

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/iio/magnetometer/st_magn_core.c

+1 −0
Original line number Diff line number Diff line
@@ -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

drivers/iio/pressure/st_pressure_core.c

+1 −0
Original line number Diff line number Diff line
@@ -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