linux/drivers/media/platform/exynos4-is/fimc-isp.h
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   1/* SPDX-License-Identifier: GPL-2.0-only */
   2/*
   3 * Samsung EXYNOS4x12 FIMC-IS (Imaging Subsystem) driver
   4 *
   5 * Copyright (C) 2013 Samsung Electronics Co., Ltd.
   6 *
   7 * Authors: Sylwester Nawrocki <s.nawrocki@samsung.com>
   8 *          Younghwan Joo <yhwan.joo@samsung.com>
   9 */
  10#ifndef FIMC_ISP_H_
  11#define FIMC_ISP_H_
  12
  13#include <linux/io.h>
  14#include <linux/platform_device.h>
  15#include <linux/sched.h>
  16#include <linux/spinlock.h>
  17#include <linux/types.h>
  18#include <linux/videodev2.h>
  19
  20#include <media/media-entity.h>
  21#include <media/videobuf2-v4l2.h>
  22#include <media/v4l2-device.h>
  23#include <media/v4l2-mediabus.h>
  24#include <media/drv-intf/exynos-fimc.h>
  25
  26extern int fimc_isp_debug;
  27
  28#define isp_dbg(level, dev, fmt, arg...) \
  29        v4l2_dbg(level, fimc_isp_debug, dev, fmt, ## arg)
  30
  31/* FIXME: revisit these constraints */
  32#define FIMC_ISP_SINK_WIDTH_MIN         (16 + 8)
  33#define FIMC_ISP_SINK_HEIGHT_MIN        (12 + 8)
  34#define FIMC_ISP_SOURCE_WIDTH_MIN       8
  35#define FIMC_ISP_SOURCE_HEIGHT_MIN      8
  36#define FIMC_ISP_CAC_MARGIN_WIDTH       16
  37#define FIMC_ISP_CAC_MARGIN_HEIGHT      12
  38
  39#define FIMC_ISP_SINK_WIDTH_MAX         (4000 - 16)
  40#define FIMC_ISP_SINK_HEIGHT_MAX        (4000 + 12)
  41#define FIMC_ISP_SOURCE_WIDTH_MAX       4000
  42#define FIMC_ISP_SOURCE_HEIGHT_MAX      4000
  43
  44#define FIMC_ISP_NUM_FORMATS            3
  45#define FIMC_ISP_REQ_BUFS_MIN           2
  46#define FIMC_ISP_REQ_BUFS_MAX           32
  47
  48#define FIMC_ISP_SD_PAD_SINK            0
  49#define FIMC_ISP_SD_PAD_SRC_FIFO        1
  50#define FIMC_ISP_SD_PAD_SRC_DMA         2
  51#define FIMC_ISP_SD_PADS_NUM            3
  52#define FIMC_ISP_MAX_PLANES             1
  53
  54/**
  55 * struct fimc_isp_frame - source/target frame properties
  56 * @width: full image width
  57 * @height: full image height
  58 * @rect: crop/composition rectangle
  59 */
  60struct fimc_isp_frame {
  61        u16 width;
  62        u16 height;
  63        struct v4l2_rect rect;
  64};
  65
  66struct fimc_isp_ctrls {
  67        struct v4l2_ctrl_handler handler;
  68
  69        /* Auto white balance */
  70        struct v4l2_ctrl *auto_wb;
  71        /* Auto ISO control cluster */
  72        struct {
  73                struct v4l2_ctrl *auto_iso;
  74                struct v4l2_ctrl *iso;
  75        };
  76        /* Adjust - contrast */
  77        struct v4l2_ctrl *contrast;
  78        /* Adjust - saturation */
  79        struct v4l2_ctrl *saturation;
  80        /* Adjust - sharpness */
  81        struct v4l2_ctrl *sharpness;
  82        /* Adjust - brightness */
  83        struct v4l2_ctrl *brightness;
  84        /* Adjust - hue */
  85        struct v4l2_ctrl *hue;
  86
  87        /* Auto/manual exposure */
  88        struct v4l2_ctrl *auto_exp;
  89        /* Manual exposure value */
  90        struct v4l2_ctrl *exposure;
  91        /* AE/AWB lock/unlock */
  92        struct v4l2_ctrl *aewb_lock;
  93        /* Exposure metering mode */
  94        struct v4l2_ctrl *exp_metering;
  95        /* AFC */
  96        struct v4l2_ctrl *afc;
  97        /* ISP image effect */
  98        struct v4l2_ctrl *colorfx;
  99};
 100
 101struct isp_video_buf {
 102        struct vb2_v4l2_buffer vb;
 103        dma_addr_t dma_addr[FIMC_ISP_MAX_PLANES];
 104        unsigned int index;
 105};
 106
 107#define to_isp_video_buf(_b) container_of(_b, struct isp_video_buf, vb)
 108
 109#define FIMC_ISP_MAX_BUFS       4
 110
 111/**
 112 * struct fimc_is_video - fimc-is video device structure
 113 * @ve: video_device structure and media pipeline
 114 * @type: video device type (CAPTURE/OUTPUT)
 115 * @pad: video device media (sink) pad
 116 * @pending_buf_q: pending buffers queue head
 117 * @active_buf_q: a queue head of buffers scheduled in hardware
 118 * @vb_queue: vb2 buffer queue
 119 * @reqbufs_count: the number of buffers requested in REQBUFS ioctl
 120 * @buf_count: number of video buffers scheduled in hardware
 121 * @buf_mask: bitmask of the queued video buffer indices
 122 * @frame_count: counter of frames dequeued to user space
 123 * @streaming: is streaming in progress?
 124 * @buffers: buffer info
 125 * @format: current fimc pixel format
 126 * @pixfmt: current pixel format
 127 */
 128struct fimc_is_video {
 129        struct exynos_video_entity ve;
 130        enum v4l2_buf_type      type;
 131        struct media_pad        pad;
 132        struct list_head        pending_buf_q;
 133        struct list_head        active_buf_q;
 134        struct vb2_queue        vb_queue;
 135        unsigned int            reqbufs_count;
 136        unsigned int            buf_count;
 137        unsigned int            buf_mask;
 138        unsigned int            frame_count;
 139        int                     streaming;
 140        struct isp_video_buf    *buffers[FIMC_ISP_MAX_BUFS];
 141        const struct fimc_fmt   *format;
 142        struct v4l2_pix_format_mplane pixfmt;
 143};
 144
 145/* struct fimc_isp:state bit definitions */
 146#define ST_ISP_VID_CAP_BUF_PREP         0
 147#define ST_ISP_VID_CAP_STREAMING        1
 148
 149/**
 150 * struct fimc_isp - FIMC-IS ISP data structure
 151 * @pdev: pointer to FIMC-IS platform device
 152 * @subdev: ISP v4l2_subdev
 153 * @subdev_pads: the ISP subdev media pads
 154 * @src_fmt: source mediabus format
 155 * @sink_fmt: sink mediabus format
 156 * @test_pattern: test pattern controls
 157 * @ctrls: v4l2 controls structure
 158 * @video_lock: mutex serializing video device operations
 159 * @subdev_lock: mutex serializing subdev operations
 160 * @cac_margin_x: horizontal CAC margin in pixels
 161 * @cac_margin_y: vertical CAC margin in pixels
 162 * @state: driver state flags
 163 * @video_capture: the ISP block video capture device
 164 */
 165struct fimc_isp {
 166        struct platform_device          *pdev;
 167        struct v4l2_subdev              subdev;
 168        struct media_pad                subdev_pads[FIMC_ISP_SD_PADS_NUM];
 169        struct v4l2_mbus_framefmt       src_fmt;
 170        struct v4l2_mbus_framefmt       sink_fmt;
 171        struct v4l2_ctrl                *test_pattern;
 172        struct fimc_isp_ctrls           ctrls;
 173
 174        struct mutex                    video_lock;
 175        struct mutex                    subdev_lock;
 176
 177        unsigned int                    cac_margin_x;
 178        unsigned int                    cac_margin_y;
 179
 180        unsigned long                   state;
 181
 182        struct fimc_is_video            video_capture;
 183};
 184
 185#define ctrl_to_fimc_isp(_ctrl) \
 186        container_of(ctrl->handler, struct fimc_isp, ctrls.handler)
 187
 188struct fimc_is;
 189
 190int fimc_isp_subdev_create(struct fimc_isp *isp);
 191void fimc_isp_subdev_destroy(struct fimc_isp *isp);
 192void fimc_isp_irq_handler(struct fimc_is *is);
 193int fimc_is_create_controls(struct fimc_isp *isp);
 194int fimc_is_delete_controls(struct fimc_isp *isp);
 195const struct fimc_fmt *fimc_isp_find_format(const u32 *pixelformat,
 196                                        const u32 *mbus_code, int index);
 197#endif /* FIMC_ISP_H_ */
 198