diff options
| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2012-12-26 16:44:11 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2013-06-21 21:34:17 +0200 |
| commit | e09da11da49c6fd625be52d8b60bbbbe225a9db6 (patch) | |
| tree | 80442f04ef06f338578c43e7eea26bca759c9104 /include | |
| parent | [media] soc-camera: switch I2C subdevice drivers to use v4l2-clk (diff) | |
| download | linux-e09da11da49c6fd625be52d8b60bbbbe225a9db6.tar.xz linux-e09da11da49c6fd625be52d8b60bbbbe225a9db6.zip | |
[media] soc-camera: add V4L2-async support
Add support for asynchronous subdevice probing, using the v4l2-async API.
The legacy synchronous mode is still supported too, which allows to
gradually update drivers and platforms. The selected approach adds a
notifier for each struct soc_camera_device instance, i.e. for each video
device node, even when there are multiple such instances registered with a
single soc-camera host simultaneously.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/media/soc_camera.h | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/include/media/soc_camera.h b/include/media/soc_camera.h index f582323fafb7..906ed98c6e95 100644 --- a/include/media/soc_camera.h +++ b/include/media/soc_camera.h @@ -19,11 +19,13 @@ #include <linux/videodev2.h> #include <media/videobuf-core.h> #include <media/videobuf2-core.h> +#include <media/v4l2-async.h> #include <media/v4l2-ctrls.h> #include <media/v4l2-device.h> struct file; struct soc_camera_desc; +struct soc_camera_async_client; struct soc_camera_device { struct list_head list; /* list of all registered devices */ @@ -50,6 +52,9 @@ struct soc_camera_device { int use_count; struct file *streamer; /* stream owner */ struct v4l2_clk *clk; + /* Asynchronous subdevice management */ + struct soc_camera_async_client *sasc; + /* video buffer queue */ union { struct videobuf_queue vb_vidq; struct vb2_queue vb2_vidq; @@ -59,16 +64,30 @@ struct soc_camera_device { /* Host supports programmable stride */ #define SOCAM_HOST_CAP_STRIDE (1 << 0) +enum soc_camera_subdev_role { + SOCAM_SUBDEV_DATA_SOURCE = 1, + SOCAM_SUBDEV_DATA_SINK, + SOCAM_SUBDEV_DATA_PROCESSOR, +}; + +struct soc_camera_async_subdev { + struct v4l2_async_subdev asd; + enum soc_camera_subdev_role role; +}; + struct soc_camera_host { struct v4l2_device v4l2_dev; struct list_head list; - struct mutex host_lock; /* Protect pipeline modifications */ + struct mutex host_lock; /* Main synchronisation lock */ + struct mutex clk_lock; /* Protect pipeline modifications */ unsigned char nr; /* Host number */ u32 capabilities; struct soc_camera_device *icd; /* Currently attached client */ void *priv; const char *drv_name; struct soc_camera_host_ops *ops; + struct v4l2_async_subdev **asd; /* Flat array, arranged in groups */ + int *asd_sizes; /* 0-terminated array of asd group sizes */ }; struct soc_camera_host_ops { @@ -161,6 +180,7 @@ struct soc_camera_host_desc { }; /* + * Platform data for "soc-camera-pdrv" * This MUST be kept binary-identical to struct soc_camera_link below, until * it is completely replaced by this one, after which we can split it into its * two components. @@ -326,6 +346,7 @@ static inline void soc_camera_limit_side(int *start, int *length, unsigned long soc_camera_apply_board_flags(struct soc_camera_subdev_desc *ssdd, const struct v4l2_mbus_config *cfg); +int soc_camera_power_init(struct device *dev, struct soc_camera_subdev_desc *ssdd); int soc_camera_power_on(struct device *dev, struct soc_camera_subdev_desc *ssdd, struct v4l2_clk *clk); int soc_camera_power_off(struct device *dev, struct soc_camera_subdev_desc *ssdd, |