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[media] cx25840: Added g_std support to the video decoder driver 

Making the detected video standard available to the core driver
and for user query.

Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Steven Toth 2012-01-04 21:16:15 -03:00 committed by Mauro Carvalho Chehab
parent 74900b4715
commit 51ada787b8
1 changed files with 36 additions and 0 deletions
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36
drivers/media/video/cx25840/cx25840-core.c
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@ -1705,6 +1705,41 @@ static int cx25840_s_stream(struct v4l2_subdev *sd, int enable)
return 0;
}
/* Query the current detected video format */
static int cx25840_g_std(struct v4l2_subdev *sd, v4l2_std_id *std)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
v4l2_std_id stds[] = {
/* 0000 */ V4L2_STD_UNKNOWN,
/* 0001 */ V4L2_STD_NTSC_M,
/* 0010 */ V4L2_STD_NTSC_M_JP,
/* 0011 */ V4L2_STD_NTSC_443,
/* 0100 */ V4L2_STD_PAL,
/* 0101 */ V4L2_STD_PAL_M,
/* 0110 */ V4L2_STD_PAL_N,
/* 0111 */ V4L2_STD_PAL_Nc,
/* 1000 */ V4L2_STD_PAL_60,
/* 1001 */ V4L2_STD_UNKNOWN,
/* 1010 */ V4L2_STD_UNKNOWN,
/* 1001 */ V4L2_STD_UNKNOWN,
/* 1010 */ V4L2_STD_UNKNOWN,
/* 1011 */ V4L2_STD_UNKNOWN,
/* 1110 */ V4L2_STD_UNKNOWN,
/* 1111 */ V4L2_STD_UNKNOWN
};
u32 fmt = (cx25840_read4(client, 0x40c) >> 8) & 0xf;
*std = stds[ fmt ];
v4l_dbg(1, cx25840_debug, client, "g_std fmt = %x, v4l2_std_id = 0x%x\n",
fmt, (unsigned int)stds[ fmt ]);
return 0;
}
static int cx25840_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct cx25840_state *state = to_state(sd);
@ -4973,6 +5008,7 @@ static const struct v4l2_subdev_core_ops cx25840_core_ops = {
.queryctrl = v4l2_subdev_queryctrl,
.querymenu = v4l2_subdev_querymenu,
.s_std = cx25840_s_std,
.g_std = cx25840_g_std,
.reset = cx25840_reset,
.load_fw = cx25840_load_fw,
.s_io_pin_config = common_s_io_pin_config,