malhuda/msm-4.14
1
0
Fork 0
mirror of https://github.com/rd-stuffs/msm-4.14.git synced 2025-02-20 11:45:48 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

V4L/DVB: cx18: add s_mbus_fmt support

Browse Source 
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 09:54:58 -03:00 committed by Mauro Carvalho Chehab
parent 475977ac3d
commit e17ad1de03
1 changed files with 74 additions and 62 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

136
drivers/media/video/cx18/cx18-av-core.c
View File

@ -1028,80 +1028,91 @@ static int cx18_av_g_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
return cx18_av_g_sliced_fmt(sd, &fmt->fmt.sliced);
}
static int cx18_av_s_fmt(struct v4l2_subdev *sd, struct v4l2_format *fmt)
static int cx18_av_s_mbus_fmt(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *fmt)
{
struct cx18_av_state *state = to_cx18_av_state(sd);
struct cx18 *cx = 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);
if (fmt->code != V4L2_MBUS_FMT_FIXED)
return -EINVAL;
fmt->field = V4L2_FIELD_INTERLACED;
fmt->colorspace = V4L2_COLORSPACE_SMPTE170M;
Vsrc = (cx18_av_read(cx, 0x476) & 0x3f) << 4;
Vsrc |= (cx18_av_read(cx, 0x475) & 0xf0) >> 4;
Hsrc = (cx18_av_read(cx, 0x472) & 0x3f) << 4;
Hsrc |= (cx18_av_read(cx, 0x471) & 0xf0) >> 4;
/*
* This adjustment reflects the excess of vactive, set in
* cx18_av_std_setup(), above standard values:
*
* 480 + 1 for 60 Hz systems
* 576 + 3 for 50 Hz systems
*/
Vlines = fmt->height + (is_50Hz ? 3 : 1);
/*
* Invalid height and width scaling requests are:
* 1. width less than 1/16 of the source width
* 2. width greater than the source width
* 3. height less than 1/8 of the source height
* 4. height greater than the source height
*/
if ((fmt->width * 16 < Hsrc) || (Hsrc < fmt->width) ||
(Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
CX18_ERR_DEV(sd, "%dx%d is not a valid size!\n",
fmt->width, fmt->height);
return -ERANGE;
}
HSC = (Hsrc * (1 << 20)) / fmt->width - (1 << 20);
VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
VSC &= 0x1fff;
if (fmt->width >= 385)
filter = 0;
else if (fmt->width > 192)
filter = 1;
else if (fmt->width > 96)
filter = 2;
else
filter = 3;
CX18_DEBUG_INFO_DEV(sd,
"decoder set size %dx%d -> scale %ux%u\n",
fmt->width, fmt->height, HSC, VSC);
/* HSCALE=HSC */
cx18_av_write(cx, 0x418, HSC & 0xff);
cx18_av_write(cx, 0x419, (HSC >> 8) & 0xff);
cx18_av_write(cx, 0x41a, HSC >> 16);
/* VSCALE=VSC */
cx18_av_write(cx, 0x41c, VSC & 0xff);
cx18_av_write(cx, 0x41d, VSC >> 8);
/* VS_INTRLACE=1 VFILT=filter */
cx18_av_write(cx, 0x41e, 0x8 | filter);
return 0;
}
static int cx18_av_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:
pix = &(fmt->fmt.pix);
Vsrc = (cx18_av_read(cx, 0x476) & 0x3f) << 4;
Vsrc |= (cx18_av_read(cx, 0x475) & 0xf0) >> 4;
Hsrc = (cx18_av_read(cx, 0x472) & 0x3f) << 4;
Hsrc |= (cx18_av_read(cx, 0x471) & 0xf0) >> 4;
/*
* This adjustment reflects the excess of vactive, set in
* cx18_av_std_setup(), above standard values:
*
* 480 + 1 for 60 Hz systems
* 576 + 3 for 50 Hz systems
*/
Vlines = pix->height + (is_50Hz ? 3 : 1);
/*
* Invalid height and width scaling requests are:
* 1. width less than 1/16 of the source width
* 2. width greater than the source width
* 3. height less than 1/8 of the source height
* 4. height greater than the source height
*/
if ((pix->width * 16 < Hsrc) || (Hsrc < pix->width) ||
(Vlines * 8 < Vsrc) || (Vsrc < Vlines)) {
CX18_ERR_DEV(sd, "%dx%d is not a valid size!\n",
pix->width, pix->height);
return -ERANGE;
}
HSC = (Hsrc * (1 << 20)) / pix->width - (1 << 20);
VSC = (1 << 16) - (Vsrc * (1 << 9) / Vlines - (1 << 9));
VSC &= 0x1fff;
if (pix->width >= 385)
filter = 0;
else if (pix->width > 192)
filter = 1;
else if (pix->width > 96)
filter = 2;
else
filter = 3;
CX18_DEBUG_INFO_DEV(sd,
"decoder set size %dx%d -> scale %ux%u\n",
pix->width, pix->height, HSC, VSC);
/* HSCALE=HSC */
cx18_av_write(cx, 0x418, HSC & 0xff);
cx18_av_write(cx, 0x419, (HSC >> 8) & 0xff);
cx18_av_write(cx, 0x41a, HSC >> 16);
/* VSCALE=VSC */
cx18_av_write(cx, 0x41c, VSC & 0xff);
cx18_av_write(cx, 0x41d, VSC >> 8);
/* VS_INTRLACE=1 VFILT=filter */
cx18_av_write(cx, 0x41e, 0x8 | filter);
break;
mbus_fmt.width = fmt->fmt.pix.width;
mbus_fmt.height = fmt->fmt.pix.height;
mbus_fmt.code = V4L2_MBUS_FMT_FIXED;
return cx18_av_s_mbus_fmt(sd, &mbus_fmt);
default:
return -EINVAL;
}
return 0;
}
static int cx18_av_s_stream(struct v4l2_subdev *sd, int enable)
@ -1400,6 +1411,7 @@ static const struct v4l2_subdev_video_ops cx18_av_video_ops = {
.s_stream = cx18_av_s_stream,
.g_fmt = cx18_av_g_fmt,
.s_fmt = cx18_av_s_fmt,
.s_mbus_fmt = cx18_av_s_mbus_fmt,
};
static const struct v4l2_subdev_vbi_ops cx18_av_vbi_ops = {