linux-kernel - [PATCH v2 1/1] media: mgb4: Enumerate only the available timings

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Message-ID: <20250408132155.2175-2-tumic@gpxsee.org>
Date: Tue,  8 Apr 2025 15:21:55 +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 v2 1/1] media: mgb4: Enumerate only the available timings

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

Enumerate only the available (as given by the input source) timings, not
all theoretically possible.

Signed-off-by: Martin Tůma <martin.tuma@...iteqautomotive.com>
---
 drivers/media/pci/mgb4/mgb4_vin.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/media/pci/mgb4/mgb4_vin.c b/drivers/media/pci/mgb4/mgb4_vin.c
index 434eaf0440e2..288546a113b6 100644
--- a/drivers/media/pci/mgb4/mgb4_vin.c
+++ b/drivers/media/pci/mgb4/mgb4_vin.c
@@ -641,7 +641,14 @@ static int vidioc_query_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_vin_dev *vindev = video_drvdata(file);
+
+	if (timings->index != 0)
+		return -EINVAL;
+	if (get_timings(vindev, &timings->timings) < 0)
+		return -ENODATA;
+
+	return 0;
 }
 
 static int vidioc_dv_timings_cap(struct file *file, void *fh,
-- 
2.48.1