diff options
Diffstat (limited to 'drivers/iio/inkern.c')
| -rw-r--r-- | drivers/iio/inkern.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c index 90c8cb727cc..c8bad3cf891 100644 --- a/drivers/iio/inkern.c +++ b/drivers/iio/inkern.c @@ -116,8 +116,11 @@ static int __of_iio_simple_xlate(struct iio_dev *indio_dev, if (!iiospec->args_count) return 0; - if (iiospec->args[0] >= indio_dev->num_channels) + if (iiospec->args[0] >= indio_dev->num_channels) { + dev_err(&indio_dev->dev, "invalid channel index %u\n", + iiospec->args[0]); return -EINVAL; + } return iiospec->args[0]; } @@ -634,3 +637,28 @@ 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); |