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authorGuennadi Liakhovetski <g.liakhovetski@gmx.de>2009-12-11 11:41:28 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-12-16 09:27:27 -0200
commit9a74251d8bee7a25fee89a0be3ccea73e01c1a05 (patch)
tree5bffc0457e8fb4e39ac98e7d41423a1512aae498 /include/media/v4l2-subdev.h
parentfaa582610d87edf3ae1d07710a8f7e11c105686c (diff)
downloadop-kernel-dev-9a74251d8bee7a25fee89a0be3ccea73e01c1a05.zip
op-kernel-dev-9a74251d8bee7a25fee89a0be3ccea73e01c1a05.tar.gz
V4L/DVB (13658): v4l: add a media-bus API for configuring v4l2 subdev pixel and frame formats
Video subdevices, like cameras, decoders, connect to video bridges over specialised busses. Data is being transferred over these busses in various formats, which only loosely correspond to fourcc codes, describing how video data is stored in RAM. This is not a one-to-one correspondence, therefore we cannot use fourcc codes to configure subdevice output data formats. This patch adds codes for several such on-the-bus formats and an API, similar to the familiar .s_fmt(), .g_fmt(), .try_fmt(), .enum_fmt() API for configuring those codes. After all users of the old API in struct v4l2_subdev_video_ops are converted, it will be removed. Also add helper routines to support generic pass-through mode for the soc-camera framework. create mode 100644 drivers/media/video/soc_mediabus.c create mode 100644 include/media/soc_mediabus.h create mode 100644 include/media/v4l2-mediabus.h Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media/v4l2-subdev.h')
-rw-r--r--include/media/v4l2-subdev.h18
1 files changed, 17 insertions, 1 deletions
diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h
index a128458..9ba99cd 100644
--- a/include/media/v4l2-subdev.h
+++ b/include/media/v4l2-subdev.h
@@ -22,6 +22,7 @@
#define _V4L2_SUBDEV_H
#include <media/v4l2-common.h>
+#include <media/v4l2-mediabus.h>
/* generic v4l2_device notify callback notification values */
#define V4L2_SUBDEV_IR_RX_NOTIFY _IOW('v', 0, u32)
@@ -207,7 +208,7 @@ struct v4l2_subdev_audio_ops {
s_std_output: set v4l2_std_id for video OUTPUT devices. This is ignored by
video input devices.
- s_crystal_freq: sets the frequency of the crystal used to generate the
+ 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
to 0. If the frequency is not supported, then -EINVAL is returned.
@@ -230,6 +231,13 @@ struct v4l2_subdev_audio_ops {
g_dv_timings(): Get custom dv timings in the sub device.
+ enum_mbus_fmt: enumerate pixel formats, provided by a video data source
+
+ g_mbus_fmt: get the current pixel format, provided by a video data source
+
+ try_mbus_fmt: try to set a pixel format on a video data source
+
+ s_mbus_fmt: set a pixel format on a video data source
*/
struct v4l2_subdev_video_ops {
int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config);
@@ -261,6 +269,14 @@ struct v4l2_subdev_video_ops {
struct v4l2_dv_timings *timings);
int (*g_dv_timings)(struct v4l2_subdev *sd,
struct v4l2_dv_timings *timings);
+ int (*enum_mbus_fmt)(struct v4l2_subdev *sd, int index,
+ enum v4l2_mbus_pixelcode *code);
+ int (*g_mbus_fmt)(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *fmt);
+ int (*try_mbus_fmt)(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *fmt);
+ int (*s_mbus_fmt)(struct v4l2_subdev *sd,
+ struct v4l2_mbus_framefmt *fmt);
};
/**
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