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

   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
  26 extern 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  */
  60 struct fimc_isp_frame {
  61         u16 width;
  62         u16 height;
  63         struct v4l2_rect rect;
  64 };
  65
  66 struct 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
 101 struct 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  * @vdev: video_device structure
 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  * @active_buf_count: number of video buffers scheduled in hardware
 120  * @frame_count: counter of frames dequeued to user space
 121  * @reqbufs_count: number of buffers requested with REQBUFS ioctl
 122  * @format: current pixel format
 123  */
 124 struct fimc_is_video {
 125         struct exynos_video_entity ve;
 126         enum v4l2_buf_type      type;
 127         struct media_pad        pad;
 128         struct list_head        pending_buf_q;
 129         struct list_head        active_buf_q;
 130         struct vb2_queue        vb_queue;
 131         unsigned int            reqbufs_count;
 132         unsigned int            buf_count;
 133         unsigned int            buf_mask;
 134         unsigned int            frame_count;
 135         int                     streaming;
 136         struct isp_video_buf    *buffers[FIMC_ISP_MAX_BUFS];
 137         const struct fimc_fmt   *format;
 138         struct v4l2_pix_format_mplane pixfmt;
 139 };
 140
 141 /* struct fimc_isp:state bit definitions */
 142 #define ST_ISP_VID_CAP_BUF_PREP         0
 143 #define ST_ISP_VID_CAP_STREAMING        1
 144
 145 /**
 146  * struct fimc_isp - FIMC-IS ISP data structure
 147  * @pdev: pointer to FIMC-IS platform device
 148  * @subdev: ISP v4l2_subdev
 149  * @subdev_pads: the ISP subdev media pads
 150  * @test_pattern: test pattern controls
 151  * @ctrls: v4l2 controls structure
 152  * @video_lock: mutex serializing video device and the subdev operations
 153  * @cac_margin_x: horizontal CAC margin in pixels
 154  * @cac_margin_y: vertical CAC margin in pixels
 155  * @state: driver state flags
 156  * @video_capture: the ISP block video capture device
 157  */
 158 struct fimc_isp {
 159         struct platform_device          *pdev;
 160         struct v4l2_subdev              subdev;
 161         struct media_pad                subdev_pads[FIMC_ISP_SD_PADS_NUM];
 162         struct v4l2_mbus_framefmt       src_fmt;
 163         struct v4l2_mbus_framefmt       sink_fmt;
 164         struct v4l2_ctrl                *test_pattern;
 165         struct fimc_isp_ctrls           ctrls;
 166
 167         struct mutex                    video_lock;
 168         struct mutex                    subdev_lock;
 169
 170         unsigned int                    cac_margin_x;
 171         unsigned int                    cac_margin_y;
 172
 173         unsigned long                   state;
 174
 175         struct fimc_is_video            video_capture;
 176 };
 177
 178 #define ctrl_to_fimc_isp(_ctrl) \
 179         container_of(ctrl->handler, struct fimc_isp, ctrls.handler)
 180
 181 struct fimc_is;
 182
 183 int fimc_isp_subdev_create(struct fimc_isp *isp);
 184 void fimc_isp_subdev_destroy(struct fimc_isp *isp);
 185 void fimc_isp_irq_handler(struct fimc_is *is);
 186 int fimc_is_create_controls(struct fimc_isp *isp);
 187 int fimc_is_delete_controls(struct fimc_isp *isp);
 188 const struct fimc_fmt *fimc_isp_find_format(const u32 *pixelformat,
 189                                         const u32 *mbus_code, int index);
 190 #endif /* FIMC_ISP_H_ */