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[media] dt3155v4l: fix format handling 

Fix various v4l2-compliance issues regarding format handling.

Main problem was a missing colorspace value and incorrect format
checks. This driver supports a single format only.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Hans Verkuil 2015-04-25 12:16:45 -03:00 committed by Mauro Carvalho Chehab
parent 5c9ede4442
commit 44a38dfb6a
1 changed files with 8 additions and 44 deletions
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52
drivers/staging/media/dt3155v4l/dt3155v4l.c
View File

@ -29,18 +29,6 @@
#define DT3155_DEVICE_ID 0x1223
static const struct v4l2_fmtdesc frame_std[] = {
{
.index = 0,
.type = V4L2_BUF_TYPE_VIDEO_CAPTURE,
.flags = 0,
.description = "8-bit Greyscale",
.pixelformat = V4L2_PIX_FMT_GREY,
},
};
#define NUM_OF_FORMATS ARRAY_SIZE(frame_std)
/**
* read_i2c_reg - reads an internal i2c register
*
@ -330,51 +318,27 @@ static int dt3155_querycap(struct file *filp, void *p, struct v4l2_capability *c
static int dt3155_enum_fmt_vid_cap(struct file *filp, void *p, struct v4l2_fmtdesc *f)
{
if (f->index >= NUM_OF_FORMATS)
if (f->index)
return -EINVAL;
*f = frame_std[f->index];
f->pixelformat = V4L2_PIX_FMT_GREY;
strcpy(f->description, "8-bit Greyscale");
return 0;
}
static int dt3155_g_fmt_vid_cap(struct file *filp, void *p, struct v4l2_format *f)
static int dt3155_fmt_vid_cap(struct file *filp, void *p, struct v4l2_format *f)
{
struct dt3155_priv *pd = video_drvdata(filp);
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
f->fmt.pix.width = pd->width;
f->fmt.pix.height = pd->height;
f->fmt.pix.pixelformat = V4L2_PIX_FMT_GREY;
f->fmt.pix.field = V4L2_FIELD_NONE;
f->fmt.pix.bytesperline = f->fmt.pix.width;
f->fmt.pix.sizeimage = f->fmt.pix.width * f->fmt.pix.height;
f->fmt.pix.colorspace = 0;
f->fmt.pix.priv = 0;
f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M;
return 0;
}
static int dt3155_try_fmt_vid_cap(struct file *filp, void *p, struct v4l2_format *f)
{
struct dt3155_priv *pd = video_drvdata(filp);
if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
if (f->fmt.pix.width == pd->width &&
f->fmt.pix.height == pd->height &&
f->fmt.pix.pixelformat == V4L2_PIX_FMT_GREY &&
f->fmt.pix.field == V4L2_FIELD_NONE &&
f->fmt.pix.bytesperline == f->fmt.pix.width &&
f->fmt.pix.sizeimage == f->fmt.pix.width * f->fmt.pix.height)
return 0;
else
return -EINVAL;
}
static int dt3155_s_fmt_vid_cap(struct file *filp, void *p, struct v4l2_format *f)
{
return dt3155_g_fmt_vid_cap(filp, p, f);
}
static int dt3155_g_std(struct file *filp, void *p, v4l2_std_id *norm)
{
struct dt3155_priv *pd = video_drvdata(filp);
@ -431,9 +395,9 @@ static int dt3155_s_input(struct file *filp, void *p, unsigned int i)
static const struct v4l2_ioctl_ops dt3155_ioctl_ops = {
.vidioc_querycap = dt3155_querycap,
.vidioc_enum_fmt_vid_cap = dt3155_enum_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = dt3155_try_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = dt3155_g_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = dt3155_s_fmt_vid_cap,
.vidioc_try_fmt_vid_cap = dt3155_fmt_vid_cap,
.vidioc_g_fmt_vid_cap = dt3155_fmt_vid_cap,
.vidioc_s_fmt_vid_cap = dt3155_fmt_vid_cap,
.vidioc_reqbufs = vb2_ioctl_reqbufs,
.vidioc_create_bufs = vb2_ioctl_create_bufs,
.vidioc_querybuf = vb2_ioctl_querybuf,