linux/drivers/media/platform/exynos4-is/fimc-isp.h
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   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/exynos-fimc.h>
  28
  29extern 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 */
  63struct fimc_isp_frame {
  64        u16 width;
  65        u16 height;
  66        struct v4l2_rect rect;
  67};
  68
  69struct 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
 104struct isp_video_buf {
 105        struct vb2_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 */
 127struct 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 */
 162struct 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
 186struct fimc_is;
 187
 188int fimc_isp_subdev_create(struct fimc_isp *isp);
 189void fimc_isp_subdev_destroy(struct fimc_isp *isp);
 190void fimc_isp_irq_handler(struct fimc_is *is);
 191int fimc_is_create_controls(struct fimc_isp *isp);
 192int fimc_is_delete_controls(struct fimc_isp *isp);
 193const struct fimc_fmt *fimc_isp_find_format(const u32 *pixelformat,
 194                                        const u32 *mbus_code, int index);
 195#endif /* FIMC_ISP_H_ */
 196