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1/* SPDX-License-Identifier: GPL-2.0-only */2/*3 * ispvideo.h4 *5 * TI OMAP3 ISP - Generic video node6 *7 * Copyright (C) 2009-2010 Nokia Corporation8 *9 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>10 * Sakari Ailus <sakari.ailus@iki.fi>11 */12 13#ifndef OMAP3_ISP_VIDEO_H14#define OMAP3_ISP_VIDEO_H15 16#include <linux/v4l2-mediabus.h>17#include <media/media-entity.h>18#include <media/v4l2-dev.h>19#include <media/v4l2-fh.h>20#include <media/videobuf2-v4l2.h>21 22#define ISP_VIDEO_DRIVER_NAME "ispvideo"23#define ISP_VIDEO_DRIVER_VERSION "0.0.2"24 25struct isp_device;26struct isp_video;27struct v4l2_mbus_framefmt;28struct v4l2_pix_format;29 30/*31 * struct isp_format_info - ISP media bus format information32 * @code: V4L2 media bus format code33 * @truncated: V4L2 media bus format code for the same format truncated to 1034 * bits. Identical to @code if the format is 10 bits wide or less.35 * @uncompressed: V4L2 media bus format code for the corresponding uncompressed36 * format. Identical to @code if the format is not DPCM compressed.37 * @flavor: V4L2 media bus format code for the same pixel layout but38 * shifted to be 8 bits per pixel. =0 if format is not shiftable.39 * @pixelformat: V4L2 pixel format FCC identifier40 * @width: Bits per pixel (when transferred over a bus)41 * @bpp: Bytes per pixel (when stored in memory)42 */43struct isp_format_info {44 u32 code;45 u32 truncated;46 u32 uncompressed;47 u32 flavor;48 u32 pixelformat;49 unsigned int width;50 unsigned int bpp;51};52 53enum isp_pipeline_stream_state {54 ISP_PIPELINE_STREAM_STOPPED = 0,55 ISP_PIPELINE_STREAM_CONTINUOUS = 1,56 ISP_PIPELINE_STREAM_SINGLESHOT = 2,57};58 59enum isp_pipeline_state {60 /* The stream has been started on the input video node. */61 ISP_PIPELINE_STREAM_INPUT = 1,62 /* The stream has been started on the output video node. */63 ISP_PIPELINE_STREAM_OUTPUT = 2,64 /* At least one buffer is queued on the input video node. */65 ISP_PIPELINE_QUEUE_INPUT = 4,66 /* At least one buffer is queued on the output video node. */67 ISP_PIPELINE_QUEUE_OUTPUT = 8,68 /* The input entity is idle, ready to be started. */69 ISP_PIPELINE_IDLE_INPUT = 16,70 /* The output entity is idle, ready to be started. */71 ISP_PIPELINE_IDLE_OUTPUT = 32,72 /* The pipeline is currently streaming. */73 ISP_PIPELINE_STREAM = 64,74};75 76/*77 * struct isp_pipeline - An ISP hardware pipeline78 * @field: The field being processed by the pipeline79 * @error: A hardware error occurred during capture80 * @ent_enum: Entities in the pipeline81 */82struct isp_pipeline {83 struct media_pipeline pipe;84 spinlock_t lock; /* Pipeline state and queue flags */85 unsigned int state;86 enum isp_pipeline_stream_state stream_state;87 struct isp_video *input;88 struct isp_video *output;89 struct media_entity_enum ent_enum;90 unsigned long l3_ick;91 unsigned int max_rate;92 enum v4l2_field field;93 atomic_t frame_number;94 bool do_propagation; /* of frame number */95 bool error;96 struct v4l2_fract max_timeperframe;97 struct v4l2_subdev *external;98 unsigned int external_rate;99 unsigned int external_width;100};101 102static inline struct isp_pipeline *to_isp_pipeline(struct media_entity *entity)103{104 struct media_pipeline *pipe = media_entity_pipeline(entity);105 106 if (!pipe)107 return NULL;108 109 return container_of(pipe, struct isp_pipeline, pipe);110}111 112static inline int isp_pipeline_ready(struct isp_pipeline *pipe)113{114 return pipe->state == (ISP_PIPELINE_STREAM_INPUT |115 ISP_PIPELINE_STREAM_OUTPUT |116 ISP_PIPELINE_QUEUE_INPUT |117 ISP_PIPELINE_QUEUE_OUTPUT |118 ISP_PIPELINE_IDLE_INPUT |119 ISP_PIPELINE_IDLE_OUTPUT);120}121 122/**123 * struct isp_buffer - ISP video buffer124 * @vb: videobuf2 buffer125 * @irqlist: List head for insertion into IRQ queue126 * @dma: DMA address127 */128struct isp_buffer {129 struct vb2_v4l2_buffer vb;130 struct list_head irqlist;131 dma_addr_t dma;132};133 134#define to_isp_buffer(buf) container_of(buf, struct isp_buffer, vb)135 136enum isp_video_dmaqueue_flags {137 /* Set if DMA queue becomes empty when ISP_PIPELINE_STREAM_CONTINUOUS */138 ISP_VIDEO_DMAQUEUE_UNDERRUN = (1 << 0),139 /* Set when queuing buffer to an empty DMA queue */140 ISP_VIDEO_DMAQUEUE_QUEUED = (1 << 1),141};142 143#define isp_video_dmaqueue_flags_clr(video) \144 ({ (video)->dmaqueue_flags = 0; })145 146/*147 * struct isp_video_operations - ISP video operations148 * @queue: Resume streaming when a buffer is queued. Called on VIDIOC_QBUF149 * if there was no buffer previously queued.150 */151struct isp_video_operations {152 int(*queue)(struct isp_video *video, struct isp_buffer *buffer);153};154 155struct isp_video {156 struct video_device video;157 enum v4l2_buf_type type;158 struct media_pad pad;159 160 struct mutex mutex; /* format and crop settings */161 atomic_t active;162 163 struct isp_device *isp;164 165 unsigned int capture_mem;166 unsigned int bpl_alignment; /* alignment value */167 unsigned int bpl_zero_padding; /* whether the alignment is optional */168 unsigned int bpl_max; /* maximum bytes per line value */169 unsigned int bpl_value; /* bytes per line value */170 unsigned int bpl_padding; /* padding at end of line */171 172 /* Pipeline state */173 struct isp_pipeline pipe;174 struct mutex stream_lock; /* pipeline and stream states */175 bool error;176 177 /* Video buffers queue */178 struct vb2_queue *queue;179 struct mutex queue_lock; /* protects the queue */180 spinlock_t irqlock; /* protects dmaqueue */181 struct list_head dmaqueue;182 enum isp_video_dmaqueue_flags dmaqueue_flags;183 184 const struct isp_video_operations *ops;185};186 187#define to_isp_video(vdev) container_of(vdev, struct isp_video, video)188 189struct isp_video_fh {190 struct v4l2_fh vfh;191 struct isp_video *video;192 struct vb2_queue queue;193 struct v4l2_format format;194 struct v4l2_fract timeperframe;195};196 197#define to_isp_video_fh(fh) container_of(fh, struct isp_video_fh, vfh)198#define isp_video_queue_to_isp_video_fh(q) \199 container_of(q, struct isp_video_fh, queue)200 201int omap3isp_video_init(struct isp_video *video, const char *name);202void omap3isp_video_cleanup(struct isp_video *video);203int omap3isp_video_register(struct isp_video *video,204 struct v4l2_device *vdev);205void omap3isp_video_unregister(struct isp_video *video);206struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video);207void omap3isp_video_cancel_stream(struct isp_video *video);208void omap3isp_video_resume(struct isp_video *video, int continuous);209struct media_pad *omap3isp_video_remote_pad(struct isp_video *video);210 211const struct isp_format_info *212omap3isp_video_format_info(u32 code);213 214#endif /* OMAP3_ISP_VIDEO_H */215