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[media] media: imx: capture: add frame sizes/interval enumeration 

Add support for enumerating frame sizes and frame intervals from the
first subdev via the V4L2 interfaces.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
This commit is contained in:
Russell King 2017-06-07 15:34:10 -03:00 committed by Mauro Carvalho Chehab
parent 949ffdbfdb
commit c24858c307
1 changed files with 73 additions and 0 deletions
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73
drivers/staging/media/imx/imx-media-capture.c
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@ -81,6 +81,76 @@ static int vidioc_querycap(struct file *file, void *fh,
return 0;
}
static int capture_enum_framesizes(struct file *file, void *fh,
struct v4l2_frmsizeenum *fsize)
{
struct capture_priv *priv = video_drvdata(file);
const struct imx_media_pixfmt *cc;
struct v4l2_subdev_frame_size_enum fse = {
.index = fsize->index,
.pad = priv->src_sd_pad,
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
int ret;
cc = imx_media_find_format(fsize->pixel_format, CS_SEL_ANY, true);
if (!cc)
return -EINVAL;
fse.code = cc->codes[0];
ret = v4l2_subdev_call(priv->src_sd, pad, enum_frame_size, NULL, &fse);
if (ret)
return ret;
if (fse.min_width == fse.max_width &&
fse.min_height == fse.max_height) {
fsize->type = V4L2_FRMSIZE_TYPE_DISCRETE;
fsize->discrete.width = fse.min_width;
fsize->discrete.height = fse.min_height;
} else {
fsize->type = V4L2_FRMSIZE_TYPE_CONTINUOUS;
fsize->stepwise.min_width = fse.min_width;
fsize->stepwise.max_width = fse.max_width;
fsize->stepwise.min_height = fse.min_height;
fsize->stepwise.max_height = fse.max_height;
fsize->stepwise.step_width = 1;
fsize->stepwise.step_height = 1;
}
return 0;
}
static int capture_enum_frameintervals(struct file *file, void *fh,
struct v4l2_frmivalenum *fival)
{
struct capture_priv *priv = video_drvdata(file);
const struct imx_media_pixfmt *cc;
struct v4l2_subdev_frame_interval_enum fie = {
.index = fival->index,
.pad = priv->src_sd_pad,
.width = fival->width,
.height = fival->height,
.which = V4L2_SUBDEV_FORMAT_ACTIVE,
};
int ret;
cc = imx_media_find_format(fival->pixel_format, CS_SEL_ANY, true);
if (!cc)
return -EINVAL;
fie.code = cc->codes[0];
ret = v4l2_subdev_call(priv->src_sd, pad, enum_frame_interval, NULL, &fie);
if (ret)
return ret;
fival->type = V4L2_FRMIVAL_TYPE_DISCRETE;
fival->discrete = fie.interval;
return 0;
}
static int capture_enum_fmt_vid_cap(struct file *file, void *fh,
struct v4l2_fmtdesc *f)
{
@ -269,6 +339,9 @@ static int capture_s_parm(struct file *file, void *fh,
static const struct v4l2_ioctl_ops capture_ioctl_ops = {
.vidioc_querycap = vidioc_querycap,
.vidioc_enum_framesizes = capture_enum_framesizes,
.vidioc_enum_frameintervals = capture_enum_frameintervals,
.vidioc_enum_fmt_vid_cap = capture_enum_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = capture_g_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = capture_try_fmt_vid_cap,