diff options
Diffstat (limited to 'drivers/iio/inkern.c')
| -rw-r--r-- | drivers/iio/inkern.c | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index db77a2d4a56b..9c22697b7e83 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -688,7 +688,8 @@ int iio_read_channel_offset(struct iio_channel *chan, int *val, int *val2) } EXPORT_SYMBOL_GPL(iio_read_channel_offset); -int iio_read_channel_processed(struct iio_channel *chan, int *val) +int iio_read_channel_processed_scale(struct iio_channel *chan, int *val, + unsigned int scale) { int ret; @@ -701,11 +702,15 @@ int iio_read_channel_processed(struct iio_channel *chan, int *val) if (iio_channel_has_info(chan->channel, IIO_CHAN_INFO_PROCESSED)) { ret = iio_channel_read(chan, val, NULL, IIO_CHAN_INFO_PROCESSED); + if (ret < 0) + goto err_unlock; + *val *= scale; } else { ret = iio_channel_read(chan, val, NULL, IIO_CHAN_INFO_RAW); if (ret < 0) goto err_unlock; - ret = iio_convert_raw_to_processed_unlocked(chan, *val, val, 1); + ret = iio_convert_raw_to_processed_unlocked(chan, *val, val, + scale); } err_unlock: @@ -713,6 +718,13 @@ err_unlock: return ret; } +EXPORT_SYMBOL_GPL(iio_read_channel_processed_scale); + +int iio_read_channel_processed(struct iio_channel *chan, int *val) +{ + /* This is just a special case with scale factor 1 */ + return iio_read_channel_processed_scale(chan, val, 1); +} EXPORT_SYMBOL_GPL(iio_read_channel_processed); int iio_read_channel_scale(struct iio_channel *chan, int *val, int *val2) |