linux-kernel - [PATCH] Enumerate only the available timings

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Message-ID: <20250530101720.1663-1-tumic@gpxsee.org>
Date: Fri, 30 May 2025 12:17:20 +0200
From: tumic@...see.org
To: Mauro Carvalho Chehab <mchehab@...nel.org>,
	Hans Verkuil <hverkuil@...all.nl>
Cc: linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Martin Tůma <martin.tuma@...iteqautomotive.com>
Subject: [PATCH] Enumerate only the available timings

From: Martin Tůma <martin.tuma@...iteqautomotive.com>

Enumerate only the available (as given by the sysfs setup - our "EDID
replacement") timings, not all theoretically possible. This is the video
outputs part of the previous inputs patch that somehow got "lost in
translation".

Signed-off-by: Martin Tůma <martin.tuma@...iteqautomotive.com>
---
 drivers/media/pci/mgb4/mgb4_vout.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/media/pci/mgb4/mgb4_vout.c b/drivers/media/pci/mgb4/mgb4_vout.c
index 14c5725bd4d8..c179c425e167 100644
--- a/drivers/media/pci/mgb4/mgb4_vout.c
+++ b/drivers/media/pci/mgb4/mgb4_vout.c
@@ -492,7 +492,14 @@ static int vidioc_s_dv_timings(struct file *file, void *fh,
 static int vidioc_enum_dv_timings(struct file *file, void *fh,
 				  struct v4l2_enum_dv_timings *timings)
 {
-	return v4l2_enum_dv_timings_cap(timings, &video_timings_cap, NULL, NULL);
+	struct mgb4_vout_dev *voutdev = video_drvdata(file);
+
+	if (timings->index != 0)
+		return -EINVAL;
+
+	get_timings(voutdev, &timings->timings);
+
+	return 0;
 }
 
 static int vidioc_dv_timings_cap(struct file *file, void *fh,

base-commit: 5e1ff2314797bf53636468a97719a8222deca9ae
-- 
2.48.1