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[media] v4l: add g_std_output callback to V4L2 subdev

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Callback is used to acquire current analog TV standard from a subdev.
It is used to avoid keeping current standard in top-level driver.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Tomasz Stanislawski 2011-06-29 07:16:15 -03:00 committed by Mauro Carvalho Chehab
parent 8b32dd0d3f
commit 5930ab2ba0
1 changed files with 4 additions and 0 deletions
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4
include/media/v4l2-subdev.h
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@ -229,6 +229,9 @@ struct v4l2_subdev_audio_ops {
s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by
video input devices.
g_std_output: get current standard for video OUTPUT devices. This is ignored
by video input devices.
g_tvnorms_output: get v4l2_std_id with all standards supported by video
OUTPUT device. This is ignored by video input devices.
@ -269,6 +272,7 @@ struct v4l2_subdev_video_ops {
int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
int (*s_crystal_freq)(struct v4l2_subdev *sd, u32 freq, u32 flags);
int (*s_std_output)(struct v4l2_subdev *sd, v4l2_std_id std);
int (*g_std_output)(struct v4l2_subdev *sd, v4l2_std_id *std);
int (*querystd)(struct v4l2_subdev *sd, v4l2_std_id *std);
int (*g_tvnorms_output)(struct v4l2_subdev *sd, v4l2_std_id *std);
int (*g_input_status)(struct v4l2_subdev *sd, u32 *status);