X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fmedia%2Fplatform%2Fomap3isp%2Fispvideo.h;fp=kernel%2Fdrivers%2Fmedia%2Fplatform%2Fomap3isp%2Fispvideo.h;h=4071dd7060ea52868a4de5ff4b79ec4cd2cccf4f;hb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;hp=0000000000000000000000000000000000000000;hpb=98260f3884f4a202f9ca5eabed40b1354c489b29;p=kvmfornfv.git diff --git a/kernel/drivers/media/platform/omap3isp/ispvideo.h b/kernel/drivers/media/platform/omap3isp/ispvideo.h new file mode 100644 index 000000000..4071dd706 --- /dev/null +++ b/kernel/drivers/media/platform/omap3isp/ispvideo.h @@ -0,0 +1,211 @@ +/* + * ispvideo.h + * + * TI OMAP3 ISP - Generic video node + * + * Copyright (C) 2009-2010 Nokia Corporation + * + * Contacts: Laurent Pinchart + * Sakari Ailus + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef OMAP3_ISP_VIDEO_H +#define OMAP3_ISP_VIDEO_H + +#include +#include +#include +#include +#include + +#define ISP_VIDEO_DRIVER_NAME "ispvideo" +#define ISP_VIDEO_DRIVER_VERSION "0.0.2" + +struct isp_device; +struct isp_video; +struct v4l2_mbus_framefmt; +struct v4l2_pix_format; + +/* + * struct isp_format_info - ISP media bus format information + * @code: V4L2 media bus format code + * @truncated: V4L2 media bus format code for the same format truncated to 10 + * bits. Identical to @code if the format is 10 bits wide or less. + * @uncompressed: V4L2 media bus format code for the corresponding uncompressed + * format. Identical to @code if the format is not DPCM compressed. + * @flavor: V4L2 media bus format code for the same pixel layout but + * shifted to be 8 bits per pixel. =0 if format is not shiftable. + * @pixelformat: V4L2 pixel format FCC identifier + * @width: Bits per pixel (when transferred over a bus) + * @bpp: Bytes per pixel (when stored in memory) + */ +struct isp_format_info { + u32 code; + u32 truncated; + u32 uncompressed; + u32 flavor; + u32 pixelformat; + unsigned int width; + unsigned int bpp; +}; + +enum isp_pipeline_stream_state { + ISP_PIPELINE_STREAM_STOPPED = 0, + ISP_PIPELINE_STREAM_CONTINUOUS = 1, + ISP_PIPELINE_STREAM_SINGLESHOT = 2, +}; + +enum isp_pipeline_state { + /* The stream has been started on the input video node. */ + ISP_PIPELINE_STREAM_INPUT = 1, + /* The stream has been started on the output video node. */ + ISP_PIPELINE_STREAM_OUTPUT = 2, + /* At least one buffer is queued on the input video node. */ + ISP_PIPELINE_QUEUE_INPUT = 4, + /* At least one buffer is queued on the output video node. */ + ISP_PIPELINE_QUEUE_OUTPUT = 8, + /* The input entity is idle, ready to be started. */ + ISP_PIPELINE_IDLE_INPUT = 16, + /* The output entity is idle, ready to be started. */ + ISP_PIPELINE_IDLE_OUTPUT = 32, + /* The pipeline is currently streaming. */ + ISP_PIPELINE_STREAM = 64, +}; + +/* + * struct isp_pipeline - An ISP hardware pipeline + * @field: The field being processed by the pipeline + * @error: A hardware error occurred during capture + * @entities: Bitmask of entities in the pipeline (indexed by entity ID) + */ +struct isp_pipeline { + struct media_pipeline pipe; + spinlock_t lock; /* Pipeline state and queue flags */ + unsigned int state; + enum isp_pipeline_stream_state stream_state; + struct isp_video *input; + struct isp_video *output; + u32 entities; + unsigned long l3_ick; + unsigned int max_rate; + enum v4l2_field field; + atomic_t frame_number; + bool do_propagation; /* of frame number */ + bool error; + struct v4l2_fract max_timeperframe; + struct v4l2_subdev *external; + unsigned int external_rate; + unsigned int external_width; +}; + +#define to_isp_pipeline(__e) \ + container_of((__e)->pipe, struct isp_pipeline, pipe) + +static inline int isp_pipeline_ready(struct isp_pipeline *pipe) +{ + return pipe->state == (ISP_PIPELINE_STREAM_INPUT | + ISP_PIPELINE_STREAM_OUTPUT | + ISP_PIPELINE_QUEUE_INPUT | + ISP_PIPELINE_QUEUE_OUTPUT | + ISP_PIPELINE_IDLE_INPUT | + ISP_PIPELINE_IDLE_OUTPUT); +} + +/** + * struct isp_buffer - ISP video buffer + * @vb: videobuf2 buffer + * @irqlist: List head for insertion into IRQ queue + * @dma: DMA address + */ +struct isp_buffer { + struct vb2_buffer vb; + struct list_head irqlist; + dma_addr_t dma; +}; + +#define to_isp_buffer(buf) container_of(buf, struct isp_buffer, vb) + +enum isp_video_dmaqueue_flags { + /* Set if DMA queue becomes empty when ISP_PIPELINE_STREAM_CONTINUOUS */ + ISP_VIDEO_DMAQUEUE_UNDERRUN = (1 << 0), + /* Set when queuing buffer to an empty DMA queue */ + ISP_VIDEO_DMAQUEUE_QUEUED = (1 << 1), +}; + +#define isp_video_dmaqueue_flags_clr(video) \ + ({ (video)->dmaqueue_flags = 0; }) + +/* + * struct isp_video_operations - ISP video operations + * @queue: Resume streaming when a buffer is queued. Called on VIDIOC_QBUF + * if there was no buffer previously queued. + */ +struct isp_video_operations { + int(*queue)(struct isp_video *video, struct isp_buffer *buffer); +}; + +struct isp_video { + struct video_device video; + enum v4l2_buf_type type; + struct media_pad pad; + + struct mutex mutex; /* format and crop settings */ + atomic_t active; + + struct isp_device *isp; + + unsigned int capture_mem; + unsigned int bpl_alignment; /* alignment value */ + unsigned int bpl_zero_padding; /* whether the alignment is optional */ + unsigned int bpl_max; /* maximum bytes per line value */ + unsigned int bpl_value; /* bytes per line value */ + unsigned int bpl_padding; /* padding at end of line */ + + /* Pipeline state */ + struct isp_pipeline pipe; + struct mutex stream_lock; /* pipeline and stream states */ + bool error; + + /* Video buffers queue */ + void *alloc_ctx; + struct vb2_queue *queue; + struct mutex queue_lock; /* protects the queue */ + spinlock_t irqlock; /* protects dmaqueue */ + struct list_head dmaqueue; + enum isp_video_dmaqueue_flags dmaqueue_flags; + + const struct isp_video_operations *ops; +}; + +#define to_isp_video(vdev) container_of(vdev, struct isp_video, video) + +struct isp_video_fh { + struct v4l2_fh vfh; + struct isp_video *video; + struct vb2_queue queue; + struct v4l2_format format; + struct v4l2_fract timeperframe; +}; + +#define to_isp_video_fh(fh) container_of(fh, struct isp_video_fh, vfh) +#define isp_video_queue_to_isp_video_fh(q) \ + container_of(q, struct isp_video_fh, queue) + +int omap3isp_video_init(struct isp_video *video, const char *name); +void omap3isp_video_cleanup(struct isp_video *video); +int omap3isp_video_register(struct isp_video *video, + struct v4l2_device *vdev); +void omap3isp_video_unregister(struct isp_video *video); +struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video); +void omap3isp_video_cancel_stream(struct isp_video *video); +void omap3isp_video_resume(struct isp_video *video, int continuous); +struct media_pad *omap3isp_video_remote_pad(struct isp_video *video); + +const struct isp_format_info * +omap3isp_video_format_info(u32 code); + +#endif /* OMAP3_ISP_VIDEO_H */