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V4L/DVB: cx25840: add support for s_mbus_fmt 

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2010-05-09 09:48:50 -03:00 committed by Mauro Carvalho Chehab
parent c463d93f22
commit 96fd004fe4
1 changed files with 59 additions and 45 deletions
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42
drivers/media/video/cx25840/cx25840-core.c
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@ -1025,17 +1025,18 @@ static int cx25840_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
return 0;
}
static int cx25840_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
static int cx25840_s_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *fmt)
{
struct cx25840_state *state = to_state(sd);
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct v4l2_pix_format *pix;
int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
int is_50Hz = !(state->std & V4L2_STD_525_60);
switch (fmt->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
pix = &(fmt->fmt.pix);
if (fmt->code != V4L2_MBUS_FMT_FIXED)
return -EINVAL;
fmt->field = V4L2_FIELD_INTERLACED;
fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
Vsrc = (cx25840_read(client, 0x476) & 0x3f) << 4;
Vsrc |= (cx25840_read(client, 0x475) & 0xf0) >> 4;
@ -1043,30 +1044,30 @@ static int cx25840_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
Hsrc = (cx25840_read(client, 0x472) & 0x3f) << 4;
Hsrc |= (cx25840_read(client, 0x471) & 0xf0) >> 4;
Vlines = pix->height + (is_50Hz ? 4 : 7);
Vlines = fmt->height + (is_50Hz ? 4 : 7);
if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
if ((fmt->width * 16 < Hsrc) || (Hsrc < fmt->width) ||
(Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
v4l_err(client, "%dx%d is not a valid size!\n",
pix->width, pix->height);
fmt->width, fmt->height);
return -ERANGE;
}
HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
HSC = (Hsrc * (1 << 20)) / fmt->width - (1 << 20);
VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
VSC &= 0x1fff;
if (pix->width >= 385)
if (fmt->width >= 385)
filter = 0;
else if (pix->width > 192)
else if (fmt->width > 192)
filter = 1;
else if (pix->width > 96)
else if (fmt->width > 96)
filter = 2;
else
filter = 3;
v4l_dbg(1, cx25840_debug, client, "decoder set size %dx%d -> scale %ux%u\n",
pix->width, pix->height, HSC, VSC);
fmt->width, fmt->height, HSC, VSC);
/* HSCALE=HSC */
cx25840_write(client, 0x418, HSC & 0xff);
@ -1077,7 +1078,19 @@ static int cx25840_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
cx25840_write(client, 0x41d, VSC >> 8);
/* VS_INTRLACE=1 VFILT=filter */
cx25840_write(client, 0x41e, 0x8 | filter);
break;
return 0;
}
static int cx25840_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
{
struct v4l2_mbus_framefmt mbus_fmt;
switch (fmt->type) {
case V4L2_BUF_TYPE_VIDEO_CAPTURE:
mbus_fmt.width = fmt->fmt.pix.width;
mbus_fmt.height = fmt->fmt.pix.height;
mbus_fmt.code = V4L2_MBUS_FMT_FIXED;
return cx25840_s_mbus_fmt(sd, &mbus_fmt);
default:
return -EINVAL;
@ -1629,6 +1642,7 @@ static const struct v4l2_subdev_video_ops cx25840_video_ops = {
.s_routing = cx25840_s_video_routing,
.g_fmt = cx25840_g_fmt,
.s_fmt = cx25840_s_fmt,
.s_mbus_fmt = cx25840_s_mbus_fmt,
.s_stream = cx25840_s_stream,
};