diff options
| author | Steven Toth <stoth@kernellabs.com> | 2012-01-05 04:16:15 +0400 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-01-05 12:57:32 +0400 |
| commit | 51ada787b89828314f09cb6b2f401c209db88917 (patch) | |
| tree | 3117d6cfaabf0c4be9030bdc6ef23583f9e4fdb0 /drivers/media/video/cx25840 | |
| parent | 74900b4715bb2092bf0c88dc673008935b8151d2 (diff) | |
| download | linux-51ada787b89828314f09cb6b2f401c209db88917.tar.xz | |
[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>
Diffstat (limited to 'drivers/media/video/cx25840')
| -rw-r--r-- | drivers/media/video/cx25840/cx25840-core.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c index 41d2ee4e37db..4f43f4a7e72d 100644 --- a/drivers/media/video/cx25840/cx25840-core.c +++ b/drivers/media/video/cx25840/cx25840-core.c @@ -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, |