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author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2011-07-01 14:31:17 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2011-07-27 17:56:08 -0300 |
commit | 91c7953005247c9563408bbdbf35e27de33e6ec3 (patch) | |
tree | 88769a0554da080023fc567bc6e41f9bc89c59c1 /include/media | |
parent | 7a05dfeddee9ffc2405230759ef32ecb603e3f48 (diff) | |
download | linux-3.10-91c7953005247c9563408bbdbf35e27de33e6ec3.tar.gz linux-3.10-91c7953005247c9563408bbdbf35e27de33e6ec3.tar.bz2 linux-3.10-91c7953005247c9563408bbdbf35e27de33e6ec3.zip |
[media] V4L: add media bus configuration subdev operations
Add media bus configuration types and two subdev operations to get
supported mediabus configurations and to set a specific configuration.
Subdevs can support several configurations, e.g., they can send video data
on 1 or several lanes, can be configured to use a specific CSI-2 channel,
in such cases subdevice drivers return bitmasks with all respective bits
set. When a set-configuration operation is called, it has to specify a
non-ambiguous configuration.
Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include/media')
-rw-r--r-- | include/media/v4l2-mediabus.h | 63 | ||||
-rw-r--r-- | include/media/v4l2-subdev.h | 10 |
2 files changed, 73 insertions, 0 deletions
diff --git a/include/media/v4l2-mediabus.h b/include/media/v4l2-mediabus.h index 971c7fa2961..6114007c8c7 100644 --- a/include/media/v4l2-mediabus.h +++ b/include/media/v4l2-mediabus.h @@ -13,6 +13,69 @@ #include <linux/v4l2-mediabus.h> +/* Parallel flags */ +/* + * Can the client run in master or in slave mode. By "Master mode" an operation + * mode is meant, when the client (e.g., a camera sensor) is producing + * horizontal and vertical synchronisation. In "Slave mode" the host is + * providing these signals to the slave. + */ +#define V4L2_MBUS_MASTER (1 << 0) +#define V4L2_MBUS_SLAVE (1 << 1) +/* Which signal polarities it supports */ +/* Note: in BT.656 mode HSYNC and VSYNC are unused */ +#define V4L2_MBUS_HSYNC_ACTIVE_HIGH (1 << 2) +#define V4L2_MBUS_HSYNC_ACTIVE_LOW (1 << 3) +#define V4L2_MBUS_VSYNC_ACTIVE_HIGH (1 << 4) +#define V4L2_MBUS_VSYNC_ACTIVE_LOW (1 << 5) +#define V4L2_MBUS_PCLK_SAMPLE_RISING (1 << 6) +#define V4L2_MBUS_PCLK_SAMPLE_FALLING (1 << 7) +#define V4L2_MBUS_DATA_ACTIVE_HIGH (1 << 8) +#define V4L2_MBUS_DATA_ACTIVE_LOW (1 << 9) + +/* Serial flags */ +/* How many lanes the client can use */ +#define V4L2_MBUS_CSI2_1_LANE (1 << 0) +#define V4L2_MBUS_CSI2_2_LANE (1 << 1) +#define V4L2_MBUS_CSI2_3_LANE (1 << 2) +#define V4L2_MBUS_CSI2_4_LANE (1 << 3) +/* On which channels it can send video data */ +#define V4L2_MBUS_CSI2_CHANNEL_0 (1 << 4) +#define V4L2_MBUS_CSI2_CHANNEL_1 (1 << 5) +#define V4L2_MBUS_CSI2_CHANNEL_2 (1 << 6) +#define V4L2_MBUS_CSI2_CHANNEL_3 (1 << 7) +/* Does it support only continuous or also non-continuous clock mode */ +#define V4L2_MBUS_CSI2_CONTINUOUS_CLOCK (1 << 8) +#define V4L2_MBUS_CSI2_NONCONTINUOUS_CLOCK (1 << 9) + +#define V4L2_MBUS_CSI2_LANES (V4L2_MBUS_CSI2_1_LANE | V4L2_MBUS_CSI2_2_LANE | \ + V4L2_MBUS_CSI2_3_LANE | V4L2_MBUS_CSI2_4_LANE) +#define V4L2_MBUS_CSI2_CHANNELS (V4L2_MBUS_CSI2_CHANNEL_0 | V4L2_MBUS_CSI2_CHANNEL_1 | \ + V4L2_MBUS_CSI2_CHANNEL_2 | V4L2_MBUS_CSI2_CHANNEL_3) + +/** + * v4l2_mbus_type - media bus type + * @V4L2_MBUS_PARALLEL: parallel interface with hsync and vsync + * @V4L2_MBUS_BT656: parallel interface with embedded synchronisation, can + * also be used for BT.1120 + * @V4L2_MBUS_CSI2: MIPI CSI-2 serial interface + */ +enum v4l2_mbus_type { + V4L2_MBUS_PARALLEL, + V4L2_MBUS_BT656, + V4L2_MBUS_CSI2, +}; + +/** + * v4l2_mbus_config - media bus configuration + * @type: in: interface type + * @flags: in / out: configuration flags, depending on @type + */ +struct v4l2_mbus_config { + enum v4l2_mbus_type type; + unsigned int flags; +}; + static inline void v4l2_fill_pix_format(struct v4l2_pix_format *pix_fmt, const struct v4l2_mbus_framefmt *mbus_fmt) { diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index 9ff0ab9069d..257da1a30f6 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -267,6 +267,12 @@ struct v4l2_subdev_audio_ops { 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 + + g_mbus_config: get supported mediabus configurations + + s_mbus_config: set a certain mediabus configuration. This operation is added + for compatibility with soc-camera drivers and should not be used by new + software. */ struct v4l2_subdev_video_ops { int (*s_routing)(struct v4l2_subdev *sd, u32 input, u32 output, u32 config); @@ -310,6 +316,10 @@ struct v4l2_subdev_video_ops { struct v4l2_mbus_framefmt *fmt); int (*s_mbus_fmt)(struct v4l2_subdev *sd, struct v4l2_mbus_framefmt *fmt); + int (*g_mbus_config)(struct v4l2_subdev *sd, + struct v4l2_mbus_config *cfg); + int (*s_mbus_config)(struct v4l2_subdev *sd, + const struct v4l2_mbus_config *cfg); }; /* |