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207 lines
6.1 KiB
207 lines
6.1 KiB
/* SPDX-License-Identifier: GPL-2.0-only */ |
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/* |
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* ispvideo.h |
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* |
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* TI OMAP3 ISP - Generic video node |
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* |
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* Copyright (C) 2009-2010 Nokia Corporation |
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* |
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* Contacts: Laurent Pinchart <[email protected]> |
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* Sakari Ailus <[email protected]> |
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*/ |
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#ifndef OMAP3_ISP_VIDEO_H |
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#define OMAP3_ISP_VIDEO_H |
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#include <linux/v4l2-mediabus.h> |
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#include <media/media-entity.h> |
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#include <media/v4l2-dev.h> |
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#include <media/v4l2-fh.h> |
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#include <media/videobuf2-v4l2.h> |
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#define ISP_VIDEO_DRIVER_NAME "ispvideo" |
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#define ISP_VIDEO_DRIVER_VERSION "0.0.2" |
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struct isp_device; |
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struct isp_video; |
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struct v4l2_mbus_framefmt; |
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struct v4l2_pix_format; |
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/* |
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* struct isp_format_info - ISP media bus format information |
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* @code: V4L2 media bus format code |
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* @truncated: V4L2 media bus format code for the same format truncated to 10 |
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* bits. Identical to @code if the format is 10 bits wide or less. |
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* @uncompressed: V4L2 media bus format code for the corresponding uncompressed |
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* format. Identical to @code if the format is not DPCM compressed. |
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* @flavor: V4L2 media bus format code for the same pixel layout but |
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* shifted to be 8 bits per pixel. =0 if format is not shiftable. |
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* @pixelformat: V4L2 pixel format FCC identifier |
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* @width: Bits per pixel (when transferred over a bus) |
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* @bpp: Bytes per pixel (when stored in memory) |
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*/ |
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struct isp_format_info { |
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u32 code; |
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u32 truncated; |
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u32 uncompressed; |
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u32 flavor; |
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u32 pixelformat; |
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unsigned int width; |
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unsigned int bpp; |
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}; |
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enum isp_pipeline_stream_state { |
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ISP_PIPELINE_STREAM_STOPPED = 0, |
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ISP_PIPELINE_STREAM_CONTINUOUS = 1, |
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ISP_PIPELINE_STREAM_SINGLESHOT = 2, |
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}; |
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enum isp_pipeline_state { |
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/* The stream has been started on the input video node. */ |
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ISP_PIPELINE_STREAM_INPUT = 1, |
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/* The stream has been started on the output video node. */ |
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ISP_PIPELINE_STREAM_OUTPUT = 2, |
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/* At least one buffer is queued on the input video node. */ |
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ISP_PIPELINE_QUEUE_INPUT = 4, |
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/* At least one buffer is queued on the output video node. */ |
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ISP_PIPELINE_QUEUE_OUTPUT = 8, |
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/* The input entity is idle, ready to be started. */ |
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ISP_PIPELINE_IDLE_INPUT = 16, |
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/* The output entity is idle, ready to be started. */ |
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ISP_PIPELINE_IDLE_OUTPUT = 32, |
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/* The pipeline is currently streaming. */ |
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ISP_PIPELINE_STREAM = 64, |
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}; |
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/* |
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* struct isp_pipeline - An ISP hardware pipeline |
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* @field: The field being processed by the pipeline |
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* @error: A hardware error occurred during capture |
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* @ent_enum: Entities in the pipeline |
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*/ |
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struct isp_pipeline { |
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struct media_pipeline pipe; |
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spinlock_t lock; /* Pipeline state and queue flags */ |
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unsigned int state; |
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enum isp_pipeline_stream_state stream_state; |
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struct isp_video *input; |
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struct isp_video *output; |
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struct media_entity_enum ent_enum; |
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unsigned long l3_ick; |
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unsigned int max_rate; |
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enum v4l2_field field; |
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atomic_t frame_number; |
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bool do_propagation; /* of frame number */ |
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bool error; |
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struct v4l2_fract max_timeperframe; |
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struct v4l2_subdev *external; |
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unsigned int external_rate; |
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unsigned int external_width; |
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}; |
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#define to_isp_pipeline(__e) \ |
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container_of((__e)->pipe, struct isp_pipeline, pipe) |
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static inline int isp_pipeline_ready(struct isp_pipeline *pipe) |
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{ |
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return pipe->state == (ISP_PIPELINE_STREAM_INPUT | |
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ISP_PIPELINE_STREAM_OUTPUT | |
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ISP_PIPELINE_QUEUE_INPUT | |
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ISP_PIPELINE_QUEUE_OUTPUT | |
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ISP_PIPELINE_IDLE_INPUT | |
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ISP_PIPELINE_IDLE_OUTPUT); |
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} |
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/** |
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* struct isp_buffer - ISP video buffer |
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* @vb: videobuf2 buffer |
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* @irqlist: List head for insertion into IRQ queue |
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* @dma: DMA address |
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*/ |
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struct isp_buffer { |
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struct vb2_v4l2_buffer vb; |
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struct list_head irqlist; |
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dma_addr_t dma; |
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}; |
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#define to_isp_buffer(buf) container_of(buf, struct isp_buffer, vb) |
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enum isp_video_dmaqueue_flags { |
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/* Set if DMA queue becomes empty when ISP_PIPELINE_STREAM_CONTINUOUS */ |
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ISP_VIDEO_DMAQUEUE_UNDERRUN = (1 << 0), |
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/* Set when queuing buffer to an empty DMA queue */ |
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ISP_VIDEO_DMAQUEUE_QUEUED = (1 << 1), |
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}; |
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#define isp_video_dmaqueue_flags_clr(video) \ |
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({ (video)->dmaqueue_flags = 0; }) |
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/* |
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* struct isp_video_operations - ISP video operations |
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* @queue: Resume streaming when a buffer is queued. Called on VIDIOC_QBUF |
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* if there was no buffer previously queued. |
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*/ |
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struct isp_video_operations { |
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int(*queue)(struct isp_video *video, struct isp_buffer *buffer); |
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}; |
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struct isp_video { |
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struct video_device video; |
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enum v4l2_buf_type type; |
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struct media_pad pad; |
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struct mutex mutex; /* format and crop settings */ |
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atomic_t active; |
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struct isp_device *isp; |
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unsigned int capture_mem; |
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unsigned int bpl_alignment; /* alignment value */ |
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unsigned int bpl_zero_padding; /* whether the alignment is optional */ |
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unsigned int bpl_max; /* maximum bytes per line value */ |
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unsigned int bpl_value; /* bytes per line value */ |
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unsigned int bpl_padding; /* padding at end of line */ |
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/* Pipeline state */ |
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struct isp_pipeline pipe; |
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struct mutex stream_lock; /* pipeline and stream states */ |
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bool error; |
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/* Video buffers queue */ |
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struct vb2_queue *queue; |
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struct mutex queue_lock; /* protects the queue */ |
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spinlock_t irqlock; /* protects dmaqueue */ |
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struct list_head dmaqueue; |
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enum isp_video_dmaqueue_flags dmaqueue_flags; |
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const struct isp_video_operations *ops; |
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}; |
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#define to_isp_video(vdev) container_of(vdev, struct isp_video, video) |
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struct isp_video_fh { |
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struct v4l2_fh vfh; |
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struct isp_video *video; |
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struct vb2_queue queue; |
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struct v4l2_format format; |
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struct v4l2_fract timeperframe; |
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}; |
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#define to_isp_video_fh(fh) container_of(fh, struct isp_video_fh, vfh) |
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#define isp_video_queue_to_isp_video_fh(q) \ |
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container_of(q, struct isp_video_fh, queue) |
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int omap3isp_video_init(struct isp_video *video, const char *name); |
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void omap3isp_video_cleanup(struct isp_video *video); |
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int omap3isp_video_register(struct isp_video *video, |
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struct v4l2_device *vdev); |
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void omap3isp_video_unregister(struct isp_video *video); |
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struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video); |
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void omap3isp_video_cancel_stream(struct isp_video *video); |
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void omap3isp_video_resume(struct isp_video *video, int continuous); |
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struct media_pad *omap3isp_video_remote_pad(struct isp_video *video); |
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const struct isp_format_info * |
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omap3isp_video_format_info(u32 code); |
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#endif /* OMAP3_ISP_VIDEO_H */
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