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| author | Artur Rojek <contact@artur-rojek.eu> | 2019-03-23 18:28:06 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2019-04-14 11:11:00 +0100 |
| commit | 9f421096a16e75d22e69f766206f1bb0dc8fcf90 (patch) | |
| tree | b9cd33e7f4491e2a5e661b1023dbeb0d180949af /drivers/iio | |
| parent | 1c163f4c7b3f621efff9b28a47abb36f7378d783 (diff) | |
| download | linux-9f421096a16e75d22e69f766206f1bb0dc8fcf90.tar.gz linux-9f421096a16e75d22e69f766206f1bb0dc8fcf90.tar.bz2 linux-9f421096a16e75d22e69f766206f1bb0dc8fcf90.zip | |
iio: inkern: API for reading available iio channel attribute values
Extend the inkern API with a function for reading available
attribute values of iio channels.
Signed-off-by: Artur Rojek <contact@artur-rojek.eu>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/inkern.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index 06ca3f7fcc44..f19dbde3c945 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -733,6 +733,26 @@ static int iio_channel_read_avail(struct iio_channel *chan, vals, type, length, info); } +int iio_read_avail_channel_attribute(struct iio_channel *chan, + const int **vals, int *type, int *length, + enum iio_chan_info_enum attribute) +{ + int ret; + + mutex_lock(&chan->indio_dev->info_exist_lock); + if (!chan->indio_dev->info) { + ret = -ENODEV; + goto err_unlock; + } + + ret = iio_channel_read_avail(chan, vals, type, length, attribute); +err_unlock: + mutex_unlock(&chan->indio_dev->info_exist_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(iio_read_avail_channel_attribute); + int iio_read_avail_channel_raw(struct iio_channel *chan, const int **vals, int *length) { |