This patch adds support for EDID get and set v4l2 ioctl ops to use
with HDMI to CSI bridges.
Signed-off-by: Sowjanya Komatineni <skomatineni@xxxxxxxxxx>
---
drivers/staging/media/tegra-video/vi.c | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/drivers/staging/media/tegra-video/vi.c b/drivers/staging/media/tegra-video/vi.c
index d01e88d..bc38136 100644
--- a/drivers/staging/media/tegra-video/vi.c
+++ b/drivers/staging/media/tegra-video/vi.c
@@ -721,6 +721,32 @@ static int tegra_channel_s_selection(struct file *file, void *fh,
return ret;
}
+static int tegra_channel_g_edid(struct file *file, void *fh,
+ struct v4l2_edid *edid)
+{
+ struct tegra_vi_channel *chan = video_drvdata(file);
+ struct v4l2_subdev *subdev;
+
+ subdev = tegra_channel_get_remote_source_subdev(chan);
+ if (!v4l2_subdev_has_op(subdev, pad, get_edid))
+ return -ENOTTY;
+
+ return v4l2_subdev_call(subdev, pad, get_edid, edid);
+}
+
+static int tegra_channel_s_edid(struct file *file, void *fh,
+ struct v4l2_edid *edid)
+{
+ struct tegra_vi_channel *chan = video_drvdata(file);
+ struct v4l2_subdev *subdev;
+
+ subdev = tegra_channel_get_remote_source_subdev(chan);
+ if (!v4l2_subdev_has_op(subdev, pad, set_edid))
+ return -ENOTTY;
+
+ return v4l2_subdev_call(subdev, pad, set_edid, edid);
+}
+
static int tegra_channel_g_dv_timings(struct file *file, void *fh,
struct v4l2_dv_timings *timings)
{
@@ -873,6 +899,8 @@ static const struct v4l2_ioctl_ops tegra_channel_ioctl_ops = {
.vidioc_unsubscribe_event = v4l2_event_unsubscribe,
.vidioc_g_selection = tegra_channel_g_selection,
.vidioc_s_selection = tegra_channel_s_selection,
+ .vidioc_g_edid = tegra_channel_g_edid,
+ .vidioc_s_edid = tegra_channel_s_edid,
.vidioc_g_dv_timings = tegra_channel_g_dv_timings,
.vidioc_s_dv_timings = tegra_channel_s_dv_timings,
.vidioc_query_dv_timings = tegra_channel_query_dv_timings,
--
2.7.4
