linux-kernel - [PATCH v2 3/3] media: i2c: ds90ub913: Use v4l2_get_frame_desc

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Message-Id: <20250219-frame-desc-passthrough-v2-3-5135d57ecd6a@ideasonboard.com>
Date: Wed, 19 Feb 2025 11:44:09 +0200
From: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
To: Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Sakari Ailus <sakari.ailus@...ux.intel.com>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
Subject: [PATCH v2 3/3] media: i2c: ds90ub913: Use
 v4l2_get_frame_desc_passthrough

Use the new v4l2_get_frame_desc_passthrough helper for .get_frame_desc.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen+renesas@...asonboard.com>
---
 drivers/media/i2c/ds90ub913.c | 59 +------------------------------------------
 1 file changed, 1 insertion(+), 58 deletions(-)

diff --git a/drivers/media/i2c/ds90ub913.c b/drivers/media/i2c/ds90ub913.c
index fd2d2d5272bf..9ae761d7e3a5 100644
--- a/drivers/media/i2c/ds90ub913.c
+++ b/drivers/media/i2c/ds90ub913.c
@@ -358,63 +358,6 @@ static int ub913_set_routing(struct v4l2_subdev *sd,
 	return _ub913_set_routing(sd, state, routing);
 }
 
-static int ub913_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,
-				struct v4l2_mbus_frame_desc *fd)
-{
-	struct ub913_data *priv = sd_to_ub913(sd);
-	const struct v4l2_subdev_krouting *routing;
-	struct v4l2_mbus_frame_desc source_fd;
-	struct v4l2_subdev_route *route;
-	struct v4l2_subdev_state *state;
-	int ret;
-
-	if (pad != UB913_PAD_SOURCE)
-		return -EINVAL;
-
-	ret = v4l2_subdev_call(priv->source_sd, pad, get_frame_desc,
-			       priv->source_sd_pad, &source_fd);
-	if (ret)
-		return ret;
-
-	fd->type = V4L2_MBUS_FRAME_DESC_TYPE_PARALLEL;
-
-	state = v4l2_subdev_lock_and_get_active_state(sd);
-
-	routing = &state->routing;
-
-	for_each_active_route(routing, route) {
-		unsigned int i;
-
-		if (route->source_pad != pad)
-			continue;
-
-		for (i = 0; i < source_fd.num_entries; i++) {
-			if (source_fd.entry[i].stream == route->sink_stream)
-				break;
-		}
-
-		if (i == source_fd.num_entries) {
-			dev_err(&priv->client->dev,
-				"Failed to find stream from source frame desc\n");
-			ret = -EPIPE;
-			goto out_unlock;
-		}
-
-		fd->entry[fd->num_entries].stream = route->source_stream;
-		fd->entry[fd->num_entries].flags = source_fd.entry[i].flags;
-		fd->entry[fd->num_entries].length = source_fd.entry[i].length;
-		fd->entry[fd->num_entries].pixelcode =
-			source_fd.entry[i].pixelcode;
-
-		fd->num_entries++;
-	}
-
-out_unlock:
-	v4l2_subdev_unlock_state(state);
-
-	return ret;
-}
-
 static int ub913_set_fmt(struct v4l2_subdev *sd,
 			 struct v4l2_subdev_state *state,
 			 struct v4l2_subdev_format *format)
@@ -514,7 +457,7 @@ static const struct v4l2_subdev_pad_ops ub913_pad_ops = {
 	.enable_streams = ub913_enable_streams,
 	.disable_streams = ub913_disable_streams,
 	.set_routing = ub913_set_routing,
-	.get_frame_desc = ub913_get_frame_desc,
+	.get_frame_desc = v4l2_get_frame_desc_passthrough,
 	.get_fmt = v4l2_subdev_get_fmt,
 	.set_fmt = ub913_set_fmt,
 };

-- 
2.43.0