/* 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 <laurent.pinchart@ideasonboard.com>
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* Sakari Ailus <sakari.ailus@iki.fi>
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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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