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authorArnaud Pouliquen <arnaud.pouliquen@st.com>2018-01-10 11:13:06 +0100
committerMark Brown <broonie@kernel.org>2018-01-10 10:30:08 +0000
commit34739a213dbb85c8d775de42d52358255059c257 (patch)
treea12a6cb37562cf92480e9b45e18c1f3257135e51 /drivers/iio
parentb688c18d30060e8a840d8af72790339c72acdac4 (diff)
IIO: inkern: API for manipulating channel attributes
Extend the inkern API with functions for reading and writing attribute of iio channels. Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/iio')
-rw-r--r--drivers/iio/inkern.c17
1 files changed, 12 insertions, 5 deletions
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index 069defcc6d9b..ec98790e2a28 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -664,9 +664,8 @@ err_unlock:
}
EXPORT_SYMBOL_GPL(iio_convert_raw_to_processed);
-static int iio_read_channel_attribute(struct iio_channel *chan,
- int *val, int *val2,
- enum iio_chan_info_enum attribute)
+int iio_read_channel_attribute(struct iio_channel *chan, int *val, int *val2,
+ enum iio_chan_info_enum attribute)
{
int ret;
@@ -682,6 +681,7 @@ err_unlock:
return ret;
}
+EXPORT_SYMBOL_GPL(iio_read_channel_attribute);
int iio_read_channel_offset(struct iio_channel *chan, int *val, int *val2)
{
@@ -850,7 +850,8 @@ static int iio_channel_write(struct iio_channel *chan, int val, int val2,
chan->channel, val, val2, info);
}
-int iio_write_channel_raw(struct iio_channel *chan, int val)
+int iio_write_channel_attribute(struct iio_channel *chan, int val, int val2,
+ enum iio_chan_info_enum attribute)
{
int ret;
@@ -860,12 +861,18 @@ int iio_write_channel_raw(struct iio_channel *chan, int val)
goto err_unlock;
}
- ret = iio_channel_write(chan, val, 0, IIO_CHAN_INFO_RAW);
+ ret = iio_channel_write(chan, val, val2, attribute);
err_unlock:
mutex_unlock(&chan->indio_dev->info_exist_lock);
return ret;
}
+EXPORT_SYMBOL_GPL(iio_write_channel_attribute);
+
+int iio_write_channel_raw(struct iio_channel *chan, int val)
+{
+ return iio_write_channel_attribute(chan, val, 0, IIO_CHAN_INFO_RAW);
+}
EXPORT_SYMBOL_GPL(iio_write_channel_raw);
unsigned int iio_get_channel_ext_info_count(struct iio_channel *chan)