Commit 4c812e33 authored by Sakari Ailus's avatar Sakari Ailus Committed by Hans Verkuil
Browse files

media: v4l: subdev: Print debug information on frame descriptor 



Print debug level information on returned frame descriptors.

Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
parent 76c0b99d

drivers/media/v4l2-core/v4l2-subdev.c

+30 −1
Original line number Diff line number Diff line
@@ -15,6 +15,7 @@ 
#include <linux/module.h>

#include <linux/overflow.h>

#include <linux/slab.h>

#include <linux/string.h>

#include <linux/types.h>

#include <linux/version.h>

#include <linux/videodev2.h>
@@ -309,9 +310,37 @@ static int call_set_selection(struct v4l2_subdev *sd, 
static int call_get_frame_desc(struct v4l2_subdev *sd, unsigned int pad,

			       struct v4l2_mbus_frame_desc *fd)

{

	unsigned int i;

	int ret;



	memset(fd, 0, sizeof(*fd));



	return sd->ops->pad->get_frame_desc(sd, pad, fd);

	ret = sd->ops->pad->get_frame_desc(sd, pad, fd);

	if (ret)

		return ret;



	dev_dbg(sd->dev, "Frame descriptor on pad %u, type %s\n", pad,

		fd->type == V4L2_MBUS_FRAME_DESC_TYPE_PARALLEL ? "parallel" :

		fd->type == V4L2_MBUS_FRAME_DESC_TYPE_CSI2 ? "CSI-2" :

		"unknown");



	for (i = 0; i < fd->num_entries; i++) {

		struct v4l2_mbus_frame_desc_entry *entry = &fd->entry[i];

		char buf[20] = "";



		if (fd->type == V4L2_MBUS_FRAME_DESC_TYPE_CSI2)

			WARN_ON(snprintf(buf, sizeof(buf),

					 ", vc %u, dt 0x%02x",

					 entry->bus.csi2.vc,

					 entry->bus.csi2.dt) >= sizeof(buf));



		dev_dbg(sd->dev,

			"\tstream %u, code 0x%04x, length %u, flags 0x%04x%s\n",

			entry->stream, entry->pixelcode, entry->length,

			entry->flags, buf);

	}



	return 0;

}



static inline int check_edid(struct v4l2_subdev *sd,