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 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_SOURC_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_SOURC_HEIGHT_MAX       4000
  46
  47 #define FIMC_ISP_NUM_FORMATS            3
  48 #define FIMC_ISP_REQ_BUFS_MIN           2
  49
  50 #define FIMC_ISP_SD_PAD_SINK            0
  51 #define FIMC_ISP_SD_PAD_SRC_FIFO        1
  52 #define FIMC_ISP_SD_PAD_SRC_DMA         2
  53 #define FIMC_ISP_SD_PADS_NUM            3
  54 #define FIMC_ISP_MAX_PLANES             1
  55
  56 /**
  57  * struct fimc_isp_frame - source/target frame properties
  58  * @width: full image width
  59  * @height: full image height
  60  * @rect: crop/composition rectangle
  61  */
  62 struct fimc_isp_frame {
  63         u16 width;
  64         u16 height;
  65         struct v4l2_rect rect;
  66 };
  67
  68 struct fimc_isp_ctrls {
  69         struct v4l2_ctrl_handler handler;
  70
  71         /* Auto white balance */
  72         struct v4l2_ctrl *auto_wb;
  73         /* Auto ISO control cluster */
  74         struct {
  75                 struct v4l2_ctrl *auto_iso;
  76                 struct v4l2_ctrl *iso;
  77         };
  78         /* Adjust - contrast */
  79         struct v4l2_ctrl *contrast;
  80         /* Adjust - saturation */
  81         struct v4l2_ctrl *saturation;
  82         /* Adjust - sharpness */
  83         struct v4l2_ctrl *sharpness;
  84         /* Adjust - brightness */
  85         struct v4l2_ctrl *brightness;
  86         /* Adjust - hue */
  87         struct v4l2_ctrl *hue;
  88
  89         /* Auto/manual exposure */
  90         struct v4l2_ctrl *auto_exp;
  91         /* Manual exposure value */
  92         struct v4l2_ctrl *exposure;
  93         /* AE/AWB lock/unlock */
  94         struct v4l2_ctrl *aewb_lock;
  95         /* Exposure metering mode */
  96         struct v4l2_ctrl *exp_metering;
  97         /* AFC */
  98         struct v4l2_ctrl *afc;
  99         /* ISP image effect */
 100         struct v4l2_ctrl *colorfx;
 101 };
 102
 103 /**
 104  * struct fimc_is_video - fimc-is video device structure
 105  * @vdev: video_device structure
 106  * @type: video device type (CAPTURE/OUTPUT)
 107  * @pad: video device media (sink) pad
 108  * @pending_buf_q: pending buffers queue head
 109  * @active_buf_q: a queue head of buffers scheduled in hardware
 110  * @vb_queue: vb2 buffer queue
 111  * @active_buf_count: number of video buffers scheduled in hardware
 112  * @frame_count: counter of frames dequeued to user space
 113  * @reqbufs_count: number of buffers requested with REQBUFS ioctl
 114  * @format: current pixel format
 115  */
 116 struct fimc_is_video {
 117         struct video_device     vdev;
 118         enum v4l2_buf_type      type;
 119         struct media_pad        pad;
 120         struct list_head        pending_buf_q;
 121         struct list_head        active_buf_q;
 122         struct vb2_queue        vb_queue;
 123         unsigned int            frame_count;
 124         unsigned int            reqbufs_count;
 125         int                     streaming;
 126         const struct fimc_fmt   *format;
 127 };
 128
 129 /**
 130  * struct fimc_isp - FIMC-IS ISP data structure
 131  * @pdev: pointer to FIMC-IS platform device
 132  * @alloc_ctx: videobuf2 memory allocator context
 133  * @subdev: ISP v4l2_subdev
 134  * @subdev_pads: the ISP subdev media pads
 135  * @test_pattern: test pattern controls
 136  * @ctrls: v4l2 controls structure
 137  * @video_lock: mutex serializing video device and the subdev operations
 138  * @cac_margin_x: horizontal CAC margin in pixels
 139  * @cac_margin_y: vertical CAC margin in pixels
 140  * @state: driver state flags
 141  * @video_capture: the ISP block video capture device
 142  */
 143 struct fimc_isp {
 144         struct platform_device          *pdev;
 145         struct vb2_alloc_ctx            *alloc_ctx;
 146         struct v4l2_subdev              subdev;
 147         struct media_pad                subdev_pads[FIMC_ISP_SD_PADS_NUM];
 148         struct v4l2_mbus_framefmt       src_fmt;
 149         struct v4l2_mbus_framefmt       sink_fmt;
 150         struct v4l2_ctrl                *test_pattern;
 151         struct fimc_isp_ctrls           ctrls;
 152
 153         struct mutex                    video_lock;
 154         struct mutex                    subdev_lock;
 155
 156         unsigned int                    cac_margin_x;
 157         unsigned int                    cac_margin_y;
 158
 159         unsigned long                   state;
 160
 161         struct fimc_is_video            video_capture;
 162 };
 163
 164 #define ctrl_to_fimc_isp(_ctrl) \
 165         container_of(ctrl->handler, struct fimc_isp, ctrls.handler)
 166
 167 struct fimc_is;
 168
 169 int fimc_isp_subdev_create(struct fimc_isp *isp);
 170 void fimc_isp_subdev_destroy(struct fimc_isp *isp);
 171 void fimc_isp_irq_handler(struct fimc_is *is);
 172 int fimc_is_create_controls(struct fimc_isp *isp);
 173 int fimc_is_delete_controls(struct fimc_isp *isp);
 174 const struct fimc_fmt *fimc_isp_find_format(const u32 *pixelformat,
 175                                         const u32 *mbus_code, int index);
 176 #endif /* FIMC_ISP_H_ */