Kyle Swenson | 8d8f654 | 2021-03-15 11:02:55 -0600 | [diff] [blame^] | 1 | /* |
| 2 | * ispvideo.h |
| 3 | * |
| 4 | * TI OMAP3 ISP - Generic video node |
| 5 | * |
| 6 | * Copyright (C) 2009-2010 Nokia Corporation |
| 7 | * |
| 8 | * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> |
| 9 | * Sakari Ailus <sakari.ailus@iki.fi> |
| 10 | * |
| 11 | * This program is free software; you can redistribute it and/or modify |
| 12 | * it under the terms of the GNU General Public License version 2 as |
| 13 | * published by the Free Software Foundation. |
| 14 | */ |
| 15 | |
| 16 | #ifndef OMAP3_ISP_VIDEO_H |
| 17 | #define OMAP3_ISP_VIDEO_H |
| 18 | |
| 19 | #include <linux/v4l2-mediabus.h> |
| 20 | #include <media/media-entity.h> |
| 21 | #include <media/v4l2-dev.h> |
| 22 | #include <media/v4l2-fh.h> |
| 23 | #include <media/videobuf2-v4l2.h> |
| 24 | |
| 25 | #define ISP_VIDEO_DRIVER_NAME "ispvideo" |
| 26 | #define ISP_VIDEO_DRIVER_VERSION "0.0.2" |
| 27 | |
| 28 | struct isp_device; |
| 29 | struct isp_video; |
| 30 | struct v4l2_mbus_framefmt; |
| 31 | struct v4l2_pix_format; |
| 32 | |
| 33 | /* |
| 34 | * struct isp_format_info - ISP media bus format information |
| 35 | * @code: V4L2 media bus format code |
| 36 | * @truncated: V4L2 media bus format code for the same format truncated to 10 |
| 37 | * bits. Identical to @code if the format is 10 bits wide or less. |
| 38 | * @uncompressed: V4L2 media bus format code for the corresponding uncompressed |
| 39 | * format. Identical to @code if the format is not DPCM compressed. |
| 40 | * @flavor: V4L2 media bus format code for the same pixel layout but |
| 41 | * shifted to be 8 bits per pixel. =0 if format is not shiftable. |
| 42 | * @pixelformat: V4L2 pixel format FCC identifier |
| 43 | * @width: Bits per pixel (when transferred over a bus) |
| 44 | * @bpp: Bytes per pixel (when stored in memory) |
| 45 | */ |
| 46 | struct isp_format_info { |
| 47 | u32 code; |
| 48 | u32 truncated; |
| 49 | u32 uncompressed; |
| 50 | u32 flavor; |
| 51 | u32 pixelformat; |
| 52 | unsigned int width; |
| 53 | unsigned int bpp; |
| 54 | }; |
| 55 | |
| 56 | enum isp_pipeline_stream_state { |
| 57 | ISP_PIPELINE_STREAM_STOPPED = 0, |
| 58 | ISP_PIPELINE_STREAM_CONTINUOUS = 1, |
| 59 | ISP_PIPELINE_STREAM_SINGLESHOT = 2, |
| 60 | }; |
| 61 | |
| 62 | enum isp_pipeline_state { |
| 63 | /* The stream has been started on the input video node. */ |
| 64 | ISP_PIPELINE_STREAM_INPUT = 1, |
| 65 | /* The stream has been started on the output video node. */ |
| 66 | ISP_PIPELINE_STREAM_OUTPUT = 2, |
| 67 | /* At least one buffer is queued on the input video node. */ |
| 68 | ISP_PIPELINE_QUEUE_INPUT = 4, |
| 69 | /* At least one buffer is queued on the output video node. */ |
| 70 | ISP_PIPELINE_QUEUE_OUTPUT = 8, |
| 71 | /* The input entity is idle, ready to be started. */ |
| 72 | ISP_PIPELINE_IDLE_INPUT = 16, |
| 73 | /* The output entity is idle, ready to be started. */ |
| 74 | ISP_PIPELINE_IDLE_OUTPUT = 32, |
| 75 | /* The pipeline is currently streaming. */ |
| 76 | ISP_PIPELINE_STREAM = 64, |
| 77 | }; |
| 78 | |
| 79 | /* |
| 80 | * struct isp_pipeline - An ISP hardware pipeline |
| 81 | * @field: The field being processed by the pipeline |
| 82 | * @error: A hardware error occurred during capture |
| 83 | * @entities: Bitmask of entities in the pipeline (indexed by entity ID) |
| 84 | */ |
| 85 | struct isp_pipeline { |
| 86 | struct media_pipeline pipe; |
| 87 | spinlock_t lock; /* Pipeline state and queue flags */ |
| 88 | unsigned int state; |
| 89 | enum isp_pipeline_stream_state stream_state; |
| 90 | struct isp_video *input; |
| 91 | struct isp_video *output; |
| 92 | u32 entities; |
| 93 | unsigned long l3_ick; |
| 94 | unsigned int max_rate; |
| 95 | enum v4l2_field field; |
| 96 | atomic_t frame_number; |
| 97 | bool do_propagation; /* of frame number */ |
| 98 | bool error; |
| 99 | struct v4l2_fract max_timeperframe; |
| 100 | struct v4l2_subdev *external; |
| 101 | unsigned int external_rate; |
| 102 | unsigned int external_width; |
| 103 | }; |
| 104 | |
| 105 | #define to_isp_pipeline(__e) \ |
| 106 | container_of((__e)->pipe, struct isp_pipeline, pipe) |
| 107 | |
| 108 | static inline int isp_pipeline_ready(struct isp_pipeline *pipe) |
| 109 | { |
| 110 | return pipe->state == (ISP_PIPELINE_STREAM_INPUT | |
| 111 | ISP_PIPELINE_STREAM_OUTPUT | |
| 112 | ISP_PIPELINE_QUEUE_INPUT | |
| 113 | ISP_PIPELINE_QUEUE_OUTPUT | |
| 114 | ISP_PIPELINE_IDLE_INPUT | |
| 115 | ISP_PIPELINE_IDLE_OUTPUT); |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * struct isp_buffer - ISP video buffer |
| 120 | * @vb: videobuf2 buffer |
| 121 | * @irqlist: List head for insertion into IRQ queue |
| 122 | * @dma: DMA address |
| 123 | */ |
| 124 | struct isp_buffer { |
| 125 | struct vb2_v4l2_buffer vb; |
| 126 | struct list_head irqlist; |
| 127 | dma_addr_t dma; |
| 128 | }; |
| 129 | |
| 130 | #define to_isp_buffer(buf) container_of(buf, struct isp_buffer, vb) |
| 131 | |
| 132 | enum isp_video_dmaqueue_flags { |
| 133 | /* Set if DMA queue becomes empty when ISP_PIPELINE_STREAM_CONTINUOUS */ |
| 134 | ISP_VIDEO_DMAQUEUE_UNDERRUN = (1 << 0), |
| 135 | /* Set when queuing buffer to an empty DMA queue */ |
| 136 | ISP_VIDEO_DMAQUEUE_QUEUED = (1 << 1), |
| 137 | }; |
| 138 | |
| 139 | #define isp_video_dmaqueue_flags_clr(video) \ |
| 140 | ({ (video)->dmaqueue_flags = 0; }) |
| 141 | |
| 142 | /* |
| 143 | * struct isp_video_operations - ISP video operations |
| 144 | * @queue: Resume streaming when a buffer is queued. Called on VIDIOC_QBUF |
| 145 | * if there was no buffer previously queued. |
| 146 | */ |
| 147 | struct isp_video_operations { |
| 148 | int(*queue)(struct isp_video *video, struct isp_buffer *buffer); |
| 149 | }; |
| 150 | |
| 151 | struct isp_video { |
| 152 | struct video_device video; |
| 153 | enum v4l2_buf_type type; |
| 154 | struct media_pad pad; |
| 155 | |
| 156 | struct mutex mutex; /* format and crop settings */ |
| 157 | atomic_t active; |
| 158 | |
| 159 | struct isp_device *isp; |
| 160 | |
| 161 | unsigned int capture_mem; |
| 162 | unsigned int bpl_alignment; /* alignment value */ |
| 163 | unsigned int bpl_zero_padding; /* whether the alignment is optional */ |
| 164 | unsigned int bpl_max; /* maximum bytes per line value */ |
| 165 | unsigned int bpl_value; /* bytes per line value */ |
| 166 | unsigned int bpl_padding; /* padding at end of line */ |
| 167 | |
| 168 | /* Pipeline state */ |
| 169 | struct isp_pipeline pipe; |
| 170 | struct mutex stream_lock; /* pipeline and stream states */ |
| 171 | bool error; |
| 172 | |
| 173 | /* Video buffers queue */ |
| 174 | void *alloc_ctx; |
| 175 | struct vb2_queue *queue; |
| 176 | struct mutex queue_lock; /* protects the queue */ |
| 177 | spinlock_t irqlock; /* protects dmaqueue */ |
| 178 | struct list_head dmaqueue; |
| 179 | enum isp_video_dmaqueue_flags dmaqueue_flags; |
| 180 | |
| 181 | const struct isp_video_operations *ops; |
| 182 | }; |
| 183 | |
| 184 | #define to_isp_video(vdev) container_of(vdev, struct isp_video, video) |
| 185 | |
| 186 | struct isp_video_fh { |
| 187 | struct v4l2_fh vfh; |
| 188 | struct isp_video *video; |
| 189 | struct vb2_queue queue; |
| 190 | struct v4l2_format format; |
| 191 | struct v4l2_fract timeperframe; |
| 192 | }; |
| 193 | |
| 194 | #define to_isp_video_fh(fh) container_of(fh, struct isp_video_fh, vfh) |
| 195 | #define isp_video_queue_to_isp_video_fh(q) \ |
| 196 | container_of(q, struct isp_video_fh, queue) |
| 197 | |
| 198 | int omap3isp_video_init(struct isp_video *video, const char *name); |
| 199 | void omap3isp_video_cleanup(struct isp_video *video); |
| 200 | int omap3isp_video_register(struct isp_video *video, |
| 201 | struct v4l2_device *vdev); |
| 202 | void omap3isp_video_unregister(struct isp_video *video); |
| 203 | struct isp_buffer *omap3isp_video_buffer_next(struct isp_video *video); |
| 204 | void omap3isp_video_cancel_stream(struct isp_video *video); |
| 205 | void omap3isp_video_resume(struct isp_video *video, int continuous); |
| 206 | struct media_pad *omap3isp_video_remote_pad(struct isp_video *video); |
| 207 | |
| 208 | const struct isp_format_info * |
| 209 | omap3isp_video_format_info(u32 code); |
| 210 | |
| 211 | #endif /* OMAP3_ISP_VIDEO_H */ |