linux-kernel - [PATCH 3/3] media: imx8mq-mipi-csi2: Implement .get_frame

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20250717071359.1910515-4-guoniu.zhou@oss.nxp.com>
Date: Thu, 17 Jul 2025 15:13:59 +0800
From: guoniu.zhou@....nxp.com
To: rmfrfs@...il.com,
	laurent.pinchart@...asonboard.com,
	martink@...teo.de,
	kernel@...i.sm
Cc: mchehab@...nel.org,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de,
	kernel@...gutronix.de,
	festevam@...il.com,
	linux-media@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] media: imx8mq-mipi-csi2: Implement .get_frame_desc subdev callback

From: "Guoniu.zhou" <guoniu.zhou@....com>

Implement .get_frame_desc subdev callback since downstream subdev
need to get frame description.

Signed-off-by: Guoniu.zhou <guoniu.zhou@....com>
Signed-off-by: Guoniu Zhou <guoniu.zhou@....com>
---
 drivers/media/platform/nxp/imx8mq-mipi-csi2.c | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/drivers/media/platform/nxp/imx8mq-mipi-csi2.c b/drivers/media/platform/nxp/imx8mq-mipi-csi2.c
index 3de9007ad122..ed6578f7f0f9 100644
--- a/drivers/media/platform/nxp/imx8mq-mipi-csi2.c
+++ b/drivers/media/platform/nxp/imx8mq-mipi-csi2.c
@@ -689,6 +689,37 @@ static int imx8mq_mipi_csi_set_fmt(struct v4l2_subdev *sd,
 	return 0;
 }
 
+static int imx8mq_mipi_csi_get_frame_desc(struct v4l2_subdev *sd,
+					  unsigned int pad,
+					  struct v4l2_mbus_frame_desc *fd)
+{
+	struct v4l2_mbus_frame_desc_entry *entry = &fd->entry[0];
+	const struct csi2_pix_format *csi2_fmt;
+	const struct v4l2_mbus_framefmt *fmt;
+	struct v4l2_subdev_state *state;
+
+	if (pad != MIPI_CSI2_PAD_SOURCE)
+		return -EINVAL;
+
+	state = v4l2_subdev_lock_and_get_active_state(sd);
+	fmt = v4l2_subdev_state_get_format(state, MIPI_CSI2_PAD_SOURCE);
+	csi2_fmt = find_csi2_format(fmt->code);
+	v4l2_subdev_unlock_state(state);
+
+	if (!csi2_fmt)
+		return -EPIPE;
+
+	fd->type = V4L2_MBUS_FRAME_DESC_TYPE_CSI2;
+	fd->num_entries = 1;
+
+	entry->flags = 0;
+	entry->pixelcode = csi2_fmt->code;
+	entry->bus.csi2.vc = 0;
+	entry->bus.csi2.dt = csi2_fmt->data_type;
+
+	return 0;
+}
+
 static const struct v4l2_subdev_video_ops imx8mq_mipi_csi_video_ops = {
 	.s_stream	= imx8mq_mipi_csi_s_stream,
 };
@@ -697,6 +728,7 @@ static const struct v4l2_subdev_pad_ops imx8mq_mipi_csi_pad_ops = {
 	.enum_mbus_code		= imx8mq_mipi_csi_enum_mbus_code,
 	.get_fmt		= v4l2_subdev_get_fmt,
 	.set_fmt		= imx8mq_mipi_csi_set_fmt,
+	.get_frame_desc		= imx8mq_mipi_csi_get_frame_desc,
 };
 
 static const struct v4l2_subdev_ops imx8mq_mipi_csi_subdev_ops = {
-- 
2.34.1