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[media] v4l: omap4iss: Add enum_fmt_vid_cap ioctl support

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List the pixel formats compatible with the active format currently
configured on the connected pad.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
This commit is contained in:
Laurent Pinchart 2013-07-12 11:25:36 -03:00 committed by Mauro Carvalho Chehab
parent cc3c2ac291
commit 0b1d424966
1 changed files with 36 additions and 0 deletions
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36
drivers/staging/media/omap4iss/iss_video.c
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@ -495,6 +495,41 @@ iss_video_querycap(struct file *file, void *fh, struct v4l2_capability *cap)
return 0;
}
static int
iss_video_enum_format(struct file *file, void *fh, struct v4l2_fmtdesc *f)
{
struct iss_video *video = video_drvdata(file);
struct v4l2_mbus_framefmt format;
unsigned int index = f->index;
unsigned int i;
int ret;
if (f->type != video->type)
return -EINVAL;
ret = __iss_video_get_format(video, &format);
if (ret < 0)
return ret;
for (i = 0; i < ARRAY_SIZE(formats); ++i) {
const struct iss_format_info *info = &formats[i];
if (format.code != info->code)
continue;
if (index == 0) {
f->pixelformat = info->pixelformat;
strlcpy(f->description, info->description,
sizeof(f->description));
return 0;
}
index--;
}
return -EINVAL;
}
static int
iss_video_get_format(struct file *file, void *fh, struct v4l2_format *format)
{
@ -918,6 +953,7 @@ iss_video_s_input(struct file *file, void *fh, unsigned int input)
static const struct v4l2_ioctl_ops iss_video_ioctl_ops = {
.vidioc_querycap = iss_video_querycap,
.vidioc_enum_fmt_vid_cap = iss_video_enum_format,
.vidioc_g_fmt_vid_cap = iss_video_get_format,
.vidioc_s_fmt_vid_cap = iss_video_set_format,
.vidioc_try_fmt_vid_cap = iss_video_try_format,