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iio: imu: inv_mpu6050: add debugfs register r/w interface 

The debugfs interface provides direct access to read and write device
registers if debugfs is enabled.

Signed-off-by: Rohit Sarkar <rohitsarkar5398@gmail.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jean-Baptiste Maneyrol <jmaneyrol@invensense.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Rohit Sarkar 2020-03-27 18:40:23 +05:30 committed by Jonathan Cameron
parent 792897ce41
commit 4b7ef6040f
1 changed files with 19 additions and 0 deletions
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19
drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
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@ -1248,12 +1248,31 @@ static const struct attribute_group inv_attribute_group = {
.attrs = inv_attributes
};
static int inv_mpu6050_reg_access(struct iio_dev *indio_dev,
unsigned int reg,
unsigned int writeval,
unsigned int *readval)
{
struct inv_mpu6050_state *st = iio_priv(indio_dev);
int ret;
mutex_lock(&st->lock);
if (readval)
ret = regmap_read(st->map, reg, readval);
else
ret = regmap_write(st->map, reg, writeval);
mutex_unlock(&st->lock);
return ret;
}
static const struct iio_info mpu_info = {
.read_raw = &inv_mpu6050_read_raw,
.write_raw = &inv_mpu6050_write_raw,
.write_raw_get_fmt = &inv_write_raw_get_fmt,
.attrs = &inv_attribute_group,
.validate_trigger = inv_mpu6050_validate_trigger,
.debugfs_reg_access = &inv_mpu6050_reg_access,
};
/**