1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * ispvideo.h 4 * 5 * TI OMAP3 ISP - Generic video node 6 * 7 * Copyright (C) 2009-2010 Nokia Corporation 8 * 9 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> 10 * Sakari Ailus <sakari.ailus@iki.fi> 11 */ 12 13 #ifndef OMAP3_ISP_VIDEO_H 14 #define OMAP3_ISP_VIDEO_H 15 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 25 struct isp_device; 26 struct isp_video; 27 struct v4l2_mbus_framefmt; 28 struct v4l2_pix_format; 29 30 /* 31 * struct isp_format_info - ISP media bus format information 32 * @code: V4L2 media bus format code 33 * @truncated: V4L2 media bus format code for the same format truncated to 10 34 * bits. Identical to @code if the format is 10 bits wide or less. 35 * @uncompressed: V4L2 media bus format code for the corresponding uncompressed 36 * format. Identical to @code if the format is not DPCM compressed. 37 * @flavor: V4L2 media bus format code for the same pixel layout but 38 * shifted to be 8 bits per pixel. =0 if format is not shiftable. 39 * @pixelformat: V4L2 pixel format FCC identifier 40 * @width: Bits per pixel (when transferred over a bus) 41 * @bpp: Bytes per pixel (when stored in memory) 42 */ 43 struct 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 53 enum isp_pipeline_stream_state { 54 ISP_PIPELINE_STREAM_STOPPED = 0, 55 ISP_PIPELINE_STREAM_CONTINUOUS = 1, 56 ISP_PIPELINE_STREAM_SINGLESHOT = 2, 57 }; 58 59 enum 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 pipeline 78 * @field: The field being processed by the pipeline 79 * @error: A hardware error occurred during capture 80 * @ent_enum: Entities in the pipeline 81 */ 82 struct 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 }; 101 102 #define to_isp_pipeline(__e) \ 103 container_of((__e)->pipe, struct isp_pipeline, pipe) 104 105 static inline int isp_pipeline_ready(struct isp_pipeline *pipe) 106 { 107 return pipe->state == (ISP_PIPELINE_STREAM_INPUT | 108 ISP_PIPELINE_STREAM_OUTPUT | 109 ISP_PIPELINE_QUEUE_INPUT | 110 ISP_PIPELINE_QUEUE_OUTPUT | 111 ISP_PIPELINE_IDLE_INPUT | 112 ISP_PIPELINE_IDLE_OUTPUT); 113 } 114 115 /** 116 * struct isp_buffer - ISP video buffer 117 * @vb: videobuf2 buffer 118 * @irqlist: List head for insertion into IRQ queue 119 * @dma: DMA address 120 */ 121 struct isp_buffer { 122 struct vb2_v4l2_buffer vb; 123 struct list_head irqlist; 124 dma_addr_t dma; 125 }; 126 127 #define to_isp_buffer(buf) container_of(buf, struct isp_buffer, vb) 128 129 enum isp_video_dmaqueue_flags { 130 /* Set if DMA queue becomes empty when ISP_PIPELINE_STREAM_CONTINUOUS */ 131 ISP_VIDEO_DMAQUEUE_UNDERRUN = (1 << 0), 132 /* Set when queuing buffer to an empty DMA queue */ 133 ISP_VIDEO_DMAQUEUE_QUEUED = (1 << 1), 134 }; 135 136 #define isp_video_dmaqueue_flags_clr(video) \ 137 ({ (video)->dmaqueue_flags = 0; }) 138 139 /* 140 * struct isp_video_operations - ISP video operations 141 * @queue: Resume streaming when a buffer is queued. Called on VIDIOC_QBUF 142 * if there was no buffer previously queued. 143 */ 144 struct isp_video_operations { 145 int(*queue)(struct isp_video *video, struct isp_buffer *buffer); 146 }; 147 148 struct isp_video { 149 struct video_device video; 150 enum v4l2_buf_type type; 151 struct media_pad pad; 152 153 struct mutex mutex; /* format and crop settings */ 154 atomic_t active; 155 156 struct isp_device *isp; 157 158 unsigned int capture_mem; 159 unsigned int bpl_alignment; /* alignment value */ 160 unsigned int bpl_zero_padding; /* whether the alignment is optional */ 161 unsigned int bpl_max; /* maximum bytes per line value */ 162 unsigned int bpl_value; /* bytes per line value */ 163 unsigned int bpl_padding; /* padding at end of line */ 164 165 /* Pipeline state */ 166 struct isp_pipeline pipe; 167 struct mutex stream_lock; /* pipeline and stream states */ 168 bool error; 169 170 /* Video buffers queue */ 171 struct vb2_queue *queue; 172 struct mutex queue_lock; /* protects the queue */ 173 spinlock_t irqlock; /* protects dmaqueue */ 174 struct list_head dmaqueue; 175 enum isp_video_dmaqueue_flags dmaqueue_flags; 176 177 const struct isp_video_operations *ops; 178 }; 179 180 #define to_isp_video(vdev) container_of(vdev, struct isp_video, video) 181 182 struct isp_video_fh { 183 struct v4l2_fh vfh; 184 struct isp_video *video; 185 struct vb2_queue queue; 186 struct v4l2_format format; 187 struct v4l2_fract timeperframe; 188 }; 189 190 #define to_isp_video_fh(fh) container_of(fh, struct isp_video_fh, vfh) 191 #define isp_video_queue_to_isp_video_fh(q) \ 192 container_of(q, struct isp_video_fh, queue) 193 194 int omap3isp_video_init(struct isp_video *video, const char *name); 195 void omap3isp_video_cleanup(struct isp_video *video); 196 int omap3isp_video_register(struct isp_video *video, 197 struct v4l2_device *vdev); 198 void omap3isp_video_unregister(struct isp_video *video); 199 struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video); 200 void omap3isp_video_cancel_stream(struct isp_video *video); 201 void omap3isp_video_resume(struct isp_video *video, int continuous); 202 struct media_pad *omap3isp_video_remote_pad(struct isp_video *video); 203 204 const struct isp_format_info * 205 omap3isp_video_format_info(u32 code); 206 207 #endif /* OMAP3_ISP_VIDEO_H */ 208