drivers/media/platform/exynos4-is/fimc-isp.h

   1 /*
   2  * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
   3  *
   4  * Copyright (C) 2013 Samsung Electronics Co., Ltd.
   5  *
   6  * Authors: Sylwester Nawrocki <s.nawrocki@samsung.com>
   7  *          Younghwan Joo <yhwan.joo@samsung.com>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13 #ifndef FIMC_ISP_H_
  14 #define FIMC_ISP_H_
  15
  16 #include <linux/io.h>
  17 #include <linux/platform_device.h>
  18 #include <linux/sched.h>
  19 #include <linux/spinlock.h>
  20 #include <linux/types.h>
  21 #include <linux/videodev2.h>
  22
  23 #include <media/media-entity.h>
  24 #include <media/videobuf2-core.h>
  25 #include <media/v4l2-device.h>
  26 #include <media/v4l2-mediabus.h>
  27 #include <media/s5p_fimc.h>
  28
  29 /* FIXME: revisit these constraints */
  30 #define FIMC_ISP_SINK_WIDTH_MIN         (16 + 8)
  31 #define FIMC_ISP_SINK_HEIGHT_MIN        (12 + 8)
  32 #define FIMC_ISP_SOURCE_WIDTH_MIN       8
  33 #define FIMC_ISP_SOURC_HEIGHT_MIN       8
  34 #define FIMC_ISP_CAC_MARGIN_WIDTH       16
  35 #define FIMC_ISP_CAC_MARGIN_HEIGHT      12
  36
  37 #define FIMC_ISP_SINK_WIDTH_MAX         (4000 - 16)
  38 #define FIMC_ISP_SINK_HEIGHT_MAX        (4000 + 12)
  39 #define FIMC_ISP_SOURCE_WIDTH_MAX       4000
  40 #define FIMC_ISP_SOURC_HEIGHT_MAX       4000
  41
  42 #define FIMC_ISP_NUM_FORMATS            3
  43 #define FIMC_ISP_REQ_BUFS_MIN           2
  44
  45 #define FIMC_ISP_SD_PAD_SINK            0
  46 #define FIMC_ISP_SD_PAD_SRC_FIFO        1
  47 #define FIMC_ISP_SD_PAD_SRC_DMA         2
  48 #define FIMC_ISP_SD_PADS_NUM            3
  49 #define FIMC_ISP_MAX_PLANES             1
  50
  51 /**
  52  * struct fimc_isp_frame - source/target frame properties
  53  * @width: full image width
  54  * @height: full image height
  55  * @rect: crop/composition rectangle
  56  */
  57 struct fimc_isp_frame {
  58         u16 width;
  59         u16 height;
  60         struct v4l2_rect rect;
  61 };
  62
  63 struct fimc_isp_ctrls {
  64         struct v4l2_ctrl_handler handler;
  65
  66         /* Auto white balance */
  67         struct v4l2_ctrl *auto_wb;
  68         /* Auto ISO control cluster */
  69         struct {
  70                 struct v4l2_ctrl *auto_iso;
  71                 struct v4l2_ctrl *iso;
  72         };
  73         /* Adjust - contrast */
  74         struct v4l2_ctrl *contrast;
  75         /* Adjust - saturation */
  76         struct v4l2_ctrl *saturation;
  77         /* Adjust - sharpness */
  78         struct v4l2_ctrl *sharpness;
  79         /* Adjust - brightness */
  80         struct v4l2_ctrl *brightness;
  81         /* Adjust - hue */
  82         struct v4l2_ctrl *hue;
  83
  84         /* Auto/manual exposure */
  85         struct v4l2_ctrl *auto_exp;
  86         /* Manual exposure value */
  87         struct v4l2_ctrl *exposure;
  88         /* AE/AWB lock/unlock */
  89         struct v4l2_ctrl *aewb_lock;
  90         /* Exposure metering mode */
  91         struct v4l2_ctrl *exp_metering;
  92         /* AFC */
  93         struct v4l2_ctrl *afc;
  94         /* ISP image effect */
  95         struct v4l2_ctrl *colorfx;
  96 };
  97
  98 /**
  99  * struct fimc_is_video - fimc-is video device structure
 100  * @vdev: video_device structure
 101  * @type: video device type (CAPTURE/OUTPUT)
 102  * @pad: video device media (sink) pad
 103  * @pending_buf_q: pending buffers queue head
 104  * @active_buf_q: a queue head of buffers scheduled in hardware
 105  * @vb_queue: vb2 buffer queue
 106  * @active_buf_count: number of video buffers scheduled in hardware
 107  * @frame_count: counter of frames dequeued to user space
 108  * @reqbufs_count: number of buffers requested with REQBUFS ioctl
 109  * @format: current pixel format
 110  */
 111 struct fimc_is_video {
 112         struct video_device     vdev;
 113         enum v4l2_buf_type      type;
 114         struct media_pad        pad;
 115         struct list_head        pending_buf_q;
 116         struct list_head        active_buf_q;
 117         struct vb2_queue        vb_queue;
 118         unsigned int            frame_count;
 119         unsigned int            reqbufs_count;
 120         int                     streaming;
 121         unsigned long           payload[FIMC_ISP_MAX_PLANES];
 122         const struct fimc_fmt   *format;
 123 };
 124
 125 /**
 126  * struct fimc_isp - FIMC-IS ISP data structure
 127  * @pdev: pointer to FIMC-IS platform device
 128  * @alloc_ctx: videobuf2 memory allocator context
 129  * @subdev: ISP v4l2_subdev
 130  * @subdev_pads: the ISP subdev media pads
 131  * @ctrl_handler: v4l2 controls handler
 132  * @test_pattern: test pattern controls
 133  * @pipeline: video capture pipeline data structure
 134  * @video_lock: mutex serializing video device and the subdev operations
 135  * @fmt: pointer to color format description structure
 136  * @payload: image size in bytes (w x h x bpp)
 137  * @inp_frame: camera input frame structure
 138  * @out_frame: DMA output frame structure
 139  * @source_subdev_grp_id: group id of remote source subdev
 140  * @cac_margin_x: horizontal CAC margin in pixels
 141  * @cac_margin_y: vertical CAC margin in pixels
 142  * @state: driver state flags
 143  * @video_capture: the ISP block video capture device
 144  */
 145 struct fimc_isp {
 146         struct platform_device          *pdev;
 147         struct vb2_alloc_ctx            *alloc_ctx;
 148         struct v4l2_subdev              subdev;
 149         struct media_pad                subdev_pads[FIMC_ISP_SD_PADS_NUM];
 150         struct v4l2_mbus_framefmt       subdev_fmt;
 151         struct v4l2_ctrl                *test_pattern;
 152         struct fimc_isp_ctrls           ctrls;
 153
 154         struct mutex                    video_lock;
 155         struct mutex                    subdev_lock;
 156
 157         struct fimc_isp_frame           inp_frame;
 158         struct fimc_isp_frame           out_frame;
 159         unsigned int                    source_subdev_grp_id;
 160
 161         unsigned int                    cac_margin_x;
 162         unsigned int                    cac_margin_y;
 163
 164         unsigned long                   state;
 165
 166         struct fimc_is_video            video_capture;
 167 };
 168
 169 #define ctrl_to_fimc_isp(_ctrl) \
 170         container_of(ctrl->handler, struct fimc_isp, ctrls.handler)
 171
 172 struct fimc_is;
 173
 174 int fimc_isp_subdev_create(struct fimc_isp *isp);
 175 void fimc_isp_subdev_destroy(struct fimc_isp *isp);
 176 void fimc_isp_irq_handler(struct fimc_is *is);
 177 int fimc_is_create_controls(struct fimc_isp *isp);
 178 int fimc_is_delete_controls(struct fimc_isp *isp);
 179 const struct fimc_fmt *fimc_isp_find_format(const u32 *pixelformat,
 180                                         const u32 *mbus_code, int index);
 181 #endif /* FIMC_ISP_H_ */