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| author | Sakari Ailus <sakari.ailus@linux.intel.com> | 2023-09-12 14:55:24 +0300 |
|---|---|---|
| committer | Hans Verkuil <hverkuil-cisco@xs4all.nl> | 2023-10-07 11:55:48 +0300 |
| commit | 4c812e33b0de26bc61e2ab5b3c4dd3e4d3c6cd51 (patch) | |
| tree | f96cc29c9c61518a9fdcbc6598052c7402a80551 /drivers/media | |
| parent | 76c0b99d614127ceadcd3563dee4983c20627e09 (diff) | |
| download | linux-4c812e33b0de26bc61e2ab5b3c4dd3e4d3c6cd51.tar.xz | |
media: v4l: subdev: Print debug information on frame descriptor
Print debug level information on returned frame descriptors.
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-subdev.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index 9cb04ace86ae..d295a4e87b66 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -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, |