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| author | Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> | 2014-11-27 01:42:45 +0300 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2014-12-12 12:28:27 +0000 |
| commit | f9380e7123863a4cb0627d940533be954a0a15df (patch) | |
| tree | c85e2a56d3c30e6380314acb2179f773dfd1420d /drivers/iio/inkern.c | |
| parent | c75b8dc84fd28511224a4cd2bfa791bb56a06172 (diff) | |
| download | linux-f9380e7123863a4cb0627d940533be954a0a15df.tar.gz linux-f9380e7123863a4cb0627d940533be954a0a15df.tar.bz2 linux-f9380e7123863a4cb0627d940533be954a0a15df.zip | |
iio: inkern: add iio_write_channel_raw
Introduce API for easy in-kernel setting of DAC values.
Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/inkern.c')
| -rw-r--r-- | drivers/iio/inkern.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index 866fe904cba2..21655fd1465c 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -631,3 +631,28 @@ err_unlock: return ret; } EXPORT_SYMBOL_GPL(iio_get_channel_type); + +static int iio_channel_write(struct iio_channel *chan, int val, int val2, + enum iio_chan_info_enum info) +{ + return chan->indio_dev->info->write_raw(chan->indio_dev, + chan->channel, val, val2, info); +} + +int iio_write_channel_raw(struct iio_channel *chan, int val) +{ + int ret; + + mutex_lock(&chan->indio_dev->info_exist_lock); + if (chan->indio_dev->info == NULL) { + ret = -ENODEV; + goto err_unlock; + } + + ret = iio_channel_write(chan, val, 0, IIO_CHAN_INFO_RAW); +err_unlock: + mutex_unlock(&chan->indio_dev->info_exist_lock); + + return ret; +} +EXPORT_SYMBOL_GPL(iio_write_channel_raw); |