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[media] add frame size/frame rate query functions

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Add missing functions to query the single fixed frame size (960x540) and
supported frame rates. Technically, the SUR40 supports any arbitrary frame
rate up to 60 FPS, as it is polled and not interrupt-driven. For now, we
just report 30 and 60 FPS, which is sufficient to make most V4L2 tools work.

Signed-off-by: Martin Kaltenbrunner <modin@yuri.at>
Signed-off-by: Florian Echtler <floe@butterbrot.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Florian Echtler 2015-05-25 09:04:14 -03:00 committed by Mauro Carvalho Chehab
parent ca27ab3159
commit da6e4674b0
1 changed files with 30 additions and 0 deletions
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30
drivers/input/touchscreen/sur40.c
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@ -778,6 +778,33 @@ static int sur40_vidioc_enum_fmt(struct file *file, void *priv,
return 0;
}
static int sur40_vidioc_enum_framesizes(struct file *file, void *priv,
struct v4l2_frmsizeenum *f)
{
if ((f->index != 0) || (f->pixel_format != V4L2_PIX_FMT_GREY))
return -EINVAL;
f->type = V4L2_FRMSIZE_TYPE_DISCRETE;
f->discrete.width = sur40_video_format.width;
f->discrete.height = sur40_video_format.height;
return 0;
}
static int sur40_vidioc_enum_frameintervals(struct file *file, void *priv,
struct v4l2_frmivalenum *f)
{
if ((f->index > 1) || (f->pixel_format != V4L2_PIX_FMT_GREY)
|| (f->width != sur40_video_format.width)
|| (f->height != sur40_video_format.height))
return -EINVAL;
f->type = V4L2_FRMIVAL_TYPE_DISCRETE;
f->discrete.denominator = 60/(f->index+1);
f->discrete.numerator = 1;
return 0;
}
static const struct usb_device_id sur40_table[] = {
{ USB_DEVICE(ID_MICROSOFT, ID_SUR40) }, /* Samsung SUR40 */
{ } /* terminating null entry */
@ -829,6 +856,9 @@ static const struct v4l2_ioctl_ops sur40_video_ioctl_ops = {
.vidioc_s_fmt_vid_cap = sur40_vidioc_fmt,
.vidioc_g_fmt_vid_cap = sur40_vidioc_fmt,
.vidioc_enum_framesizes = sur40_vidioc_enum_framesizes,
.vidioc_enum_frameintervals = sur40_vidioc_enum_frameintervals,
.vidioc_enum_input = sur40_vidioc_enum_input,
.vidioc_g_input = sur40_vidioc_g_input,
.vidioc_s_input = sur40_vidioc_s_input,