diff options
| author | Steven Toth <stoth@kernellabs.com> | 2012-01-06 11:54:05 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-01-10 23:38:20 -0200 |
| commit | a21df45df0c41f3eb7d0ec6676c7d14b20842bc2 (patch) | |
| tree | 373d8c08f0a013a8d8c7ec8e3441d59d4e8ba930 /drivers/media/video/cx25840/cx25840-core.c | |
| parent | 0963119fca6ad250146fd7d27eb90f205e188beb (diff) | |
[media] cx25840: Add support for g_input_status
Allow bridge drivers to query status.
Signed-off-by: Steven Toth <stoth@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx25840/cx25840-core.c')
| -rw-r--r-- | drivers/media/video/cx25840/cx25840-core.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/media/video/cx25840/cx25840-core.c b/drivers/media/video/cx25840/cx25840-core.c index ad299668c37..05247d4c340 100644 --- a/drivers/media/video/cx25840/cx25840-core.c +++ b/drivers/media/video/cx25840/cx25840-core.c @@ -1741,6 +1741,21 @@ static int cx25840_g_std(struct v4l2_subdev *sd, v4l2_std_id *std) return 0; } +static int cx25840_g_input_status(struct v4l2_subdev *sd, u32 *status) +{ + struct i2c_client *client = v4l2_get_subdevdata(sd); + + /* A limited function that checks for signal status and returns + * the state. + */ + + /* Check for status of Horizontal lock (SRC lock isn't reliable) */ + if ((cx25840_read4(client, 0x40c) & 0x00010000) == 0) + *status |= V4L2_IN_ST_NO_SIGNAL; + + return 0; +} + static int cx25840_s_std(struct v4l2_subdev *sd, v4l2_std_id std) { struct cx25840_state *state = to_state(sd); @@ -5037,6 +5052,7 @@ static const struct v4l2_subdev_video_ops cx25840_video_ops = { .s_routing = cx25840_s_video_routing, .s_mbus_fmt = cx25840_s_mbus_fmt, .s_stream = cx25840_s_stream, + .g_input_status = cx25840_g_input_status, }; static const struct v4l2_subdev_vbi_ops cx25840_vbi_ops = { |