include/media/drv-intf/exynos-fimc.h

   1 /*
   2  * Samsung S5P/Exynos4 SoC series camera interface driver header
   3  *
   4  * Copyright (C) 2010 - 2013 Samsung Electronics Co., Ltd.
   5  * Sylwester Nawrocki <s.nawrocki@samsung.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #ifndef S5P_FIMC_H_
  13 #define S5P_FIMC_H_
  14
  15 #include <media/media-entity.h>
  16 #include <media/v4l2-dev.h>
  17 #include <media/v4l2-mediabus.h>
  18
  19 /*
  20  * Enumeration of data inputs to the camera subsystem.
  21  */
  22 enum fimc_input {
  23         FIMC_INPUT_PARALLEL_0   = 1,
  24         FIMC_INPUT_PARALLEL_1,
  25         FIMC_INPUT_MIPI_CSI2_0  = 3,
  26         FIMC_INPUT_MIPI_CSI2_1,
  27         FIMC_INPUT_WRITEBACK_A  = 5,
  28         FIMC_INPUT_WRITEBACK_B,
  29         FIMC_INPUT_WRITEBACK_ISP = 5,
  30 };
  31
  32 /*
  33  * Enumeration of the FIMC data bus types.
  34  */
  35 enum fimc_bus_type {
  36         /* Camera parallel bus */
  37         FIMC_BUS_TYPE_ITU_601 = 1,
  38         /* Camera parallel bus with embedded synchronization */
  39         FIMC_BUS_TYPE_ITU_656,
  40         /* Camera MIPI-CSI2 serial bus */
  41         FIMC_BUS_TYPE_MIPI_CSI2,
  42         /* FIFO link from LCD controller (WriteBack A) */
  43         FIMC_BUS_TYPE_LCD_WRITEBACK_A,
  44         /* FIFO link from LCD controller (WriteBack B) */
  45         FIMC_BUS_TYPE_LCD_WRITEBACK_B,
  46         /* FIFO link from FIMC-IS */
  47         FIMC_BUS_TYPE_ISP_WRITEBACK = FIMC_BUS_TYPE_LCD_WRITEBACK_B,
  48 };
  49
  50 #define fimc_input_is_parallel(x) ((x) == 1 || (x) == 2)
  51 #define fimc_input_is_mipi_csi(x) ((x) == 3 || (x) == 4)
  52
  53 /*
  54  * The subdevices' group IDs.
  55  */
  56 #define GRP_ID_SENSOR           (1 << 8)
  57 #define GRP_ID_FIMC_IS_SENSOR   (1 << 9)
  58 #define GRP_ID_WRITEBACK        (1 << 10)
  59 #define GRP_ID_CSIS             (1 << 11)
  60 #define GRP_ID_FIMC             (1 << 12)
  61 #define GRP_ID_FLITE            (1 << 13)
  62 #define GRP_ID_FIMC_IS          (1 << 14)
  63
  64 /**
  65  * struct fimc_source_info - video source description required for the host
  66  *                           interface configuration
  67  *
  68  * @fimc_bus_type: FIMC camera input type
  69  * @sensor_bus_type: image sensor bus type, MIPI, ITU-R BT.601 etc.
  70  * @flags: the parallel sensor bus flags defining signals polarity (V4L2_MBUS_*)
  71  * @mux_id: FIMC camera interface multiplexer index (separate for MIPI and ITU)
  72  */
  73 struct fimc_source_info {
  74         enum fimc_bus_type fimc_bus_type;
  75         enum fimc_bus_type sensor_bus_type;
  76         u16 flags;
  77         u16 mux_id;
  78 };
  79
  80 /*
  81  * v4l2_device notification id. This is only for internal use in the kernel.
  82  * Sensor subdevs should issue S5P_FIMC_TX_END_NOTIFY notification in single
  83  * frame capture mode when there is only one VSYNC pulse issued by the sensor
  84  * at begining of the frame transmission.
  85  */
  86 #define S5P_FIMC_TX_END_NOTIFY _IO('e', 0)
  87
  88 #define FIMC_MAX_PLANES 3
  89
  90 /**
  91  * struct fimc_fmt - color format data structure
  92  * @mbus_code: media bus pixel code, -1 if not applicable
  93  * @name: format description
  94  * @fourcc: fourcc code for this format, 0 if not applicable
  95  * @color: the driver's private color format id
  96  * @memplanes: number of physically non-contiguous data planes
  97  * @colplanes: number of physically contiguous data planes
  98  * @colorspace: v4l2 colorspace (V4L2_COLORSPACE_*)
  99  * @depth: per plane driver's private 'number of bits per pixel'
 100  * @mdataplanes: bitmask indicating meta data plane(s), (1 << plane_no)
 101  * @flags: flags indicating which operation mode format applies to
 102  */
 103 struct fimc_fmt {
 104         u32 mbus_code;
 105         char    *name;
 106         u32     fourcc;
 107         u32     color;
 108         u16     memplanes;
 109         u16     colplanes;
 110         u8      colorspace;
 111         u8      depth[FIMC_MAX_PLANES];
 112         u16     mdataplanes;
 113         u16     flags;
 114 #define FMT_FLAGS_CAM           (1 << 0)
 115 #define FMT_FLAGS_M2M_IN        (1 << 1)
 116 #define FMT_FLAGS_M2M_OUT       (1 << 2)
 117 #define FMT_FLAGS_M2M           (1 << 1 | 1 << 2)
 118 #define FMT_HAS_ALPHA           (1 << 3)
 119 #define FMT_FLAGS_COMPRESSED    (1 << 4)
 120 #define FMT_FLAGS_WRITEBACK     (1 << 5)
 121 #define FMT_FLAGS_RAW_BAYER     (1 << 6)
 122 #define FMT_FLAGS_YUV           (1 << 7)
 123 };
 124
 125 struct exynos_media_pipeline;
 126
 127 /*
 128  * Media pipeline operations to be called from within a video node,  i.e. the
 129  * last entity within the pipeline. Implemented by related media device driver.
 130  */
 131 struct exynos_media_pipeline_ops {
 132         int (*prepare)(struct exynos_media_pipeline *p,
 133                                                 struct media_entity *me);
 134         int (*unprepare)(struct exynos_media_pipeline *p);
 135         int (*open)(struct exynos_media_pipeline *p, struct media_entity *me,
 136                                                         bool resume);
 137         int (*close)(struct exynos_media_pipeline *p);
 138         int (*set_stream)(struct exynos_media_pipeline *p, bool state);
 139 };
 140
 141 struct exynos_video_entity {
 142         struct video_device vdev;
 143         struct exynos_media_pipeline *pipe;
 144 };
 145
 146 struct exynos_media_pipeline {
 147         struct media_pipeline mp;
 148         const struct exynos_media_pipeline_ops *ops;
 149 };
 150
 151 static inline struct exynos_video_entity *vdev_to_exynos_video_entity(
 152                                         struct video_device *vdev)
 153 {
 154         return container_of(vdev, struct exynos_video_entity, vdev);
 155 }
 156
 157 #define fimc_pipeline_call(ent, op, args...)                              \
 158         ((!(ent) || !(ent)->pipe) ? -ENOENT : \
 159         (((ent)->pipe->ops && (ent)->pipe->ops->op) ? \
 160         (ent)->pipe->ops->op(((ent)->pipe), ##args) : -ENOIOCTLCMD))      \
 161
 162 #endif /* S5P_FIMC_H_ */