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-v4l2.h>
  25 #include <media/v4l2-device.h>
  26 #include <media/v4l2-mediabus.h>
  27 #include <media/drv-intf/exynos-fimc.h>
  28
  29 extern int fimc_isp_debug;
  30
  31 #define isp_dbg(level, dev, fmt, arg...) \
  32         v4l2_dbg(level, fimc_isp_debug, dev, fmt, ## arg)
  33
  34 /* FIXME: revisit these constraints */
  35 #define FIMC_ISP_SINK_WIDTH_MIN         (16 + 8)
  36 #define FIMC_ISP_SINK_HEIGHT_MIN        (12 + 8)
  37 #define FIMC_ISP_SOURCE_WIDTH_MIN       8
  38 #define FIMC_ISP_SOURCE_HEIGHT_MIN      8
  39 #define FIMC_ISP_CAC_MARGIN_WIDTH       16
  40 #define FIMC_ISP_CAC_MARGIN_HEIGHT      12
  41
  42 #define FIMC_ISP_SINK_WIDTH_MAX         (4000 - 16)
  43 #define FIMC_ISP_SINK_HEIGHT_MAX        (4000 + 12)
  44 #define FIMC_ISP_SOURCE_WIDTH_MAX       4000
  45 #define FIMC_ISP_SOURCE_HEIGHT_MAX      4000
  46
  47 #define FIMC_ISP_NUM_FORMATS            3
  48 #define FIMC_ISP_REQ_BUFS_MIN           2
  49 #define FIMC_ISP_REQ_BUFS_MAX           32
  50
  51 #define FIMC_ISP_SD_PAD_SINK            0
  52 #define FIMC_ISP_SD_PAD_SRC_FIFO        1
  53 #define FIMC_ISP_SD_PAD_SRC_DMA         2
  54 #define FIMC_ISP_SD_PADS_NUM            3
  55 #define FIMC_ISP_MAX_PLANES             1
  56
  57 /**
  58  * struct fimc_isp_frame - source/target frame properties
  59  * @width: full image width
  60  * @height: full image height
  61  * @rect: crop/composition rectangle
  62  */
  63 struct fimc_isp_frame {
  64         u16 width;
  65         u16 height;
  66         struct v4l2_rect rect;
  67 };
  68
  69 struct fimc_isp_ctrls {
  70         struct v4l2_ctrl_handler handler;
  71
  72         /* Auto white balance */
  73         struct v4l2_ctrl *auto_wb;
  74         /* Auto ISO control cluster */
  75         struct {
  76                 struct v4l2_ctrl *auto_iso;
  77                 struct v4l2_ctrl *iso;
  78         };
  79         /* Adjust - contrast */
  80         struct v4l2_ctrl *contrast;
  81         /* Adjust - saturation */
  82         struct v4l2_ctrl *saturation;
  83         /* Adjust - sharpness */
  84         struct v4l2_ctrl *sharpness;
  85         /* Adjust - brightness */
  86         struct v4l2_ctrl *brightness;
  87         /* Adjust - hue */
  88         struct v4l2_ctrl *hue;
  89
  90         /* Auto/manual exposure */
  91         struct v4l2_ctrl *auto_exp;
  92         /* Manual exposure value */
  93         struct v4l2_ctrl *exposure;
  94         /* AE/AWB lock/unlock */
  95         struct v4l2_ctrl *aewb_lock;
  96         /* Exposure metering mode */
  97         struct v4l2_ctrl *exp_metering;
  98         /* AFC */
  99         struct v4l2_ctrl *afc;
 100         /* ISP image effect */
 101         struct v4l2_ctrl *colorfx;
 102 };
 103
 104 struct isp_video_buf {
 105         struct vb2_v4l2_buffer vb;
 106         dma_addr_t dma_addr[FIMC_ISP_MAX_PLANES];
 107         unsigned int index;
 108 };
 109
 110 #define to_isp_video_buf(_b) container_of(_b, struct isp_video_buf, vb)
 111
 112 #define FIMC_ISP_MAX_BUFS       4
 113
 114 /**
 115  * struct fimc_is_video - fimc-is video device structure
 116  * @vdev: video_device structure
 117  * @type: video device type (CAPTURE/OUTPUT)
 118  * @pad: video device media (sink) pad
 119  * @pending_buf_q: pending buffers queue head
 120  * @active_buf_q: a queue head of buffers scheduled in hardware
 121  * @vb_queue: vb2 buffer queue
 122  * @active_buf_count: number of video buffers scheduled in hardware
 123  * @frame_count: counter of frames dequeued to user space
 124  * @reqbufs_count: number of buffers requested with REQBUFS ioctl
 125  * @format: current pixel format
 126  */
 127 struct fimc_is_video {
 128         struct exynos_video_entity ve;
 129         enum v4l2_buf_type      type;
 130         struct media_pad        pad;
 131         struct list_head        pending_buf_q;
 132         struct list_head        active_buf_q;
 133         struct vb2_queue        vb_queue;
 134         unsigned int            reqbufs_count;
 135         unsigned int            buf_count;
 136         unsigned int            buf_mask;
 137         unsigned int            frame_count;
 138         int                     streaming;
 139         struct isp_video_buf    *buffers[FIMC_ISP_MAX_BUFS];
 140         const struct fimc_fmt   *format;
 141         struct v4l2_pix_format_mplane pixfmt;
 142 };
 143
 144 /* struct fimc_isp:state bit definitions */
 145 #define ST_ISP_VID_CAP_BUF_PREP         0
 146 #define ST_ISP_VID_CAP_STREAMING        1
 147
 148 /**
 149  * struct fimc_isp - FIMC-IS ISP data structure
 150  * @pdev: pointer to FIMC-IS platform device
 151  * @alloc_ctx: videobuf2 memory allocator context
 152  * @subdev: ISP v4l2_subdev
 153  * @subdev_pads: the ISP subdev media pads
 154  * @test_pattern: test pattern controls
 155  * @ctrls: v4l2 controls structure
 156  * @video_lock: mutex serializing video device and the subdev operations
 157  * @cac_margin_x: horizontal CAC margin in pixels
 158  * @cac_margin_y: vertical CAC margin in pixels
 159  * @state: driver state flags
 160  * @video_capture: the ISP block video capture device
 161  */
 162 struct fimc_isp {
 163         struct platform_device          *pdev;
 164         struct vb2_alloc_ctx            *alloc_ctx;
 165         struct v4l2_subdev              subdev;
 166         struct media_pad                subdev_pads[FIMC_ISP_SD_PADS_NUM];
 167         struct v4l2_mbus_framefmt       src_fmt;
 168         struct v4l2_mbus_framefmt       sink_fmt;
 169         struct v4l2_ctrl                *test_pattern;
 170         struct fimc_isp_ctrls           ctrls;
 171
 172         struct mutex                    video_lock;
 173         struct mutex                    subdev_lock;
 174
 175         unsigned int                    cac_margin_x;
 176         unsigned int                    cac_margin_y;
 177
 178         unsigned long                   state;
 179
 180         struct fimc_is_video            video_capture;
 181 };
 182
 183 #define ctrl_to_fimc_isp(_ctrl) \
 184         container_of(ctrl->handler, struct fimc_isp, ctrls.handler)
 185
 186 struct fimc_is;
 187
 188 int fimc_isp_subdev_create(struct fimc_isp *isp);
 189 void fimc_isp_subdev_destroy(struct fimc_isp *isp);
 190 void fimc_isp_irq_handler(struct fimc_is *is);
 191 int fimc_is_create_controls(struct fimc_isp *isp);
 192 int fimc_is_delete_controls(struct fimc_isp *isp);
 193 const struct fimc_fmt *fimc_isp_find_format(const u32 *pixelformat,
 194                                         const u32 *mbus_code, int index);
 195 #endif /* FIMC_ISP_H_ */