From f9380e7123863a4cb0627d940533be954a0a15df Mon Sep 17 00:00:00 2001 From: Dmitry Eremin-Solenikov Date: Thu, 27 Nov 2014 01:42:45 +0300 Subject: iio: inkern: add iio_write_channel_raw Introduce API for easy in-kernel setting of DAC values. Signed-off-by: Dmitry Eremin-Solenikov Signed-off-by: Jonathan Cameron --- drivers/iio/inkern.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'drivers/iio/inkern.c') 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); -- cgit v1.2.3