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52 lines
1.7 KiB
Diff
52 lines
1.7 KiB
Diff
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From e03a63b8d4a60ee49e3277ac7f7ea4c2998e7938 Mon Sep 17 00:00:00 2001
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From: Kieran Bingham <kieran.bingham@ideasonboard.com>
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Date: Thu, 10 Oct 2024 14:52:52 +0100
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Subject: [PATCH 1325/1350] NotForUpstream: media: video-mux: Propagate
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controls to source
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The i.MX8MP makes calls on it's source device to determine
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the link-frequency that should be configured on the CSI2 receiver.
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When the source is behind a video mux, we need to pass this call through
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to the connected device.
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Map the control handler of the source device to the video-mux,
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essentially proxying all controls on the mux to the device which has
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it's link enabled.
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Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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---
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drivers/media/platform/video-mux.c | 7 +++++++
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1 file changed, 7 insertions(+)
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--- a/drivers/media/platform/video-mux.c
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+++ b/drivers/media/platform/video-mux.c
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@@ -69,6 +69,7 @@ static int video_mux_link_setup(struct m
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const struct media_pad *remote, u32 flags)
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{
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struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
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+ struct v4l2_subdev *source_sd;
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struct video_mux *vmux = v4l2_subdev_to_video_mux(sd);
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u16 source_pad = entity->num_pads - 1;
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int ret = 0;
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@@ -111,6 +112,10 @@ static int video_mux_link_setup(struct m
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*source_mbusformat = *v4l2_subdev_get_pad_format(sd, sd_state,
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vmux->active);
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v4l2_subdev_unlock_state(sd_state);
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+
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+ source_sd = media_entity_to_v4l2_subdev(remote->entity);
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+ vmux->subdev.ctrl_handler = source_sd->ctrl_handler;
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+
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} else {
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if (vmux->active != local->index)
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goto out;
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@@ -118,6 +123,8 @@ static int video_mux_link_setup(struct m
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dev_dbg(sd->dev, "going inactive\n");
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mux_control_deselect(vmux->mux);
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vmux->active = -1;
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+
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+ vmux->subdev.ctrl_handler = NULL;
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}
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out:
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