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IIO: inkern: API for manipulating channel attributes

Browse source 
Extend the inkern API with functions for reading and writing
attribute of iio channels.

Signed-off-by: Arnaud Pouliquen <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
This commit is contained in:
Arnaud Pouliquen 2018-01-10 11:13:06 +01:00 • committed by Mark Brown
commit 34739a213d
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GPG key ID: 24D68B725D5487D0
4 changed files with 66 additions and 33 deletions
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17
drivers/iio/inkern.c
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@ -664,9 +664,8 @@ err_unlock:
}
EXPORT_SYMBOL_GPL(iio_convert_raw_to_processed);
static int iio_read_channel_attribute(struct iio_channel *chan,
int *val, int *val2,
enum iio_chan_info_enum attribute)
int iio_read_channel_attribute(struct iio_channel *chan, int *val, int *val2,
enum iio_chan_info_enum attribute)
{
int ret;
@ -682,6 +681,7 @@ err_unlock:
return ret;
}
EXPORT_SYMBOL_GPL(iio_read_channel_attribute);
int iio_read_channel_offset(struct iio_channel *chan, int *val, int *val2)
{
@ -850,7 +850,8 @@ static int iio_channel_write(struct iio_channel *chan, int val, int val2,
chan->channel, val, val2, info);
}
int iio_write_channel_raw(struct iio_channel *chan, int val)
int iio_write_channel_attribute(struct iio_channel *chan, int val, int val2,
enum iio_chan_info_enum attribute)
{
int ret;
@ -860,12 +861,18 @@ int iio_write_channel_raw(struct iio_channel *chan, int val)
goto err_unlock;
}
ret = iio_channel_write(chan, val, 0, IIO_CHAN_INFO_RAW);
ret = iio_channel_write(chan, val, val2, attribute);
err_unlock:
mutex_unlock(&chan->indio_dev->info_exist_lock);
return ret;
}
EXPORT_SYMBOL_GPL(iio_write_channel_attribute);
int iio_write_channel_raw(struct iio_channel *chan, int val)
{
return iio_write_channel_attribute(chan, val, 0, IIO_CHAN_INFO_RAW);
}
EXPORT_SYMBOL_GPL(iio_write_channel_raw);
unsigned int iio_get_channel_ext_info_count(struct iio_channel *chan)