diff options
| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2025-08-21 14:56:49 +0300 |
|---|---|---|
| committer | Hans Verkuil <hverkuil+cisco@kernel.org> | 2025-08-25 15:40:41 +0200 |
| commit | bdc9776dac860cae7f61e2b48929f87597306644 (patch) | |
| tree | 9dc32ed3c97ef926a17694268c8e8c6086ed01c9 /include | |
| parent | 683342ce3c0dae068bf0ee157ee12c13088193f7 (diff) | |
media: v4l2-common: Update v4l2_get_link_freq() documentation
Document that v4l2_get_link_freq() obtains the link frequency primarily
by calling the get_mbus_config sub-device pad operation.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/media/v4l2-common.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/include/media/v4l2-common.h b/include/media/v4l2-common.h index ab0ce8e605c3..e31b4434ea5d 100644 --- a/include/media/v4l2-common.h +++ b/include/media/v4l2-common.h @@ -566,10 +566,12 @@ int v4l2_fill_pixfmt_mp(struct v4l2_pix_format_mplane *pixfmt, u32 pixelformat, * @div: The divisor between pixel rate and link frequency. Number of data lanes * times two on D-PHY, 1 on parallel. 0 otherwise. * - * This function is intended for obtaining the link frequency from the - * transmitter sub-device's pad. It returns the link rate, either from the - * V4L2_CID_LINK_FREQ control implemented by the transmitter, or value - * calculated based on the V4L2_CID_PIXEL_RATE implemented by the transmitter. + * This function obtains and returns the link frequency from the transmitter + * sub-device's pad. The link frequency is retrieved using the get_mbus_config + * sub-device pad operation. If this fails, the function falls back to obtaining + * the frequency either directly from the V4L2_CID_LINK_FREQ control if + * implemented by the transmitter, or by calculating it from the pixel rate + * obtained from the V4L2_CID_PIXEL_RATE control. * * Return: * * >0: Link frequency |