diff options
| author | Sean Anderson <sean.anderson@linux.dev> | 2024-06-24 13:46:00 -0400 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2024-06-28 20:06:56 +0100 |
| commit | 0214b27fc949a7bcaf57e71a7f9f534d6481d08b (patch) | |
| tree | 090c37d9f0766db77237066fb92ba07be6da57cf /include/linux/iio | |
| parent | 9641972917d69790ef55ef4d434b564955432d1f (diff) | |
iio: Add iio_read_channel_label to inkern API
It can be convenient for other in-kernel drivers to reuse IIO channel
labels. Export the iio_read_channel_label function to allow this. The
signature is different depending on where we are calling it from, so
the meat is moved to do_iio_read_channel_label.
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://patch.msgid.link/20240624174601.1527244-2-sean.anderson@linux.dev
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'include/linux/iio')
| -rw-r--r-- | include/linux/iio/consumer.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/iio/consumer.h b/include/linux/iio/consumer.h index e9910b41d48e..333d1d8ccb37 100644 --- a/include/linux/iio/consumer.h +++ b/include/linux/iio/consumer.h @@ -441,4 +441,14 @@ ssize_t iio_read_channel_ext_info(struct iio_channel *chan, ssize_t iio_write_channel_ext_info(struct iio_channel *chan, const char *attr, const char *buf, size_t len); +/** + * iio_read_channel_label() - read label for a given channel + * @chan: The channel being queried. + * @buf: Where to store the attribute value. Assumed to hold + * at least PAGE_SIZE bytes. + * + * Returns the number of bytes written to buf, or an error code. + */ +ssize_t iio_read_channel_label(struct iio_channel *chan, char *buf); + #endif |