[media] v4l: add g_tvnorms_output callback to V4L2 subdev

Callback is used to acquire TV norms supported by a subdev.
It is used to avoid having standards in top-level driver.

Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index b05579b..44a5ddb 100644 (file)
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -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_tvnorms_output: get v4l2_std_id with all standards supported by video
+       OUTPUT device. This is ignored by video input devices.
+
    s_crystal_freq: sets the frequency of the crystal used to generate the
        clocks in Hz. An extra flags field allows device specific configuration
        regarding clock frequency dividers, etc. If not used, then set flags
@@ -265,6 +268,7 @@ struct v4l2_subdev_video_ops {
        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 (*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);
        int (*s_stream)(struct v4l2_subdev *sd, int enable);
        int (*cropcap)(struct v4l2_subdev *sd, struct v4l2_cropcap *cc);