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TOMOYO Linux Cross Reference
Linux/include/media/s5p_fimc.h

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  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 struct i2c_board_info;
 65 
 66 /**
 67  * struct fimc_source_info - video source description required for the host
 68  *                           interface configuration
 69  *
 70  * @board_info: pointer to I2C subdevice's board info
 71  * @clk_frequency: frequency of the clock the host interface provides to sensor
 72  * @fimc_bus_type: FIMC camera input type
 73  * @sensor_bus_type: image sensor bus type, MIPI, ITU-R BT.601 etc.
 74  * @flags: the parallel sensor bus flags defining signals polarity (V4L2_MBUS_*)
 75  * @i2c_bus_num: i2c control bus id the sensor is attached to
 76  * @mux_id: FIMC camera interface multiplexer index (separate for MIPI and ITU)
 77  * @clk_id: index of the SoC peripheral clock for sensors
 78  */
 79 struct fimc_source_info {
 80         struct i2c_board_info *board_info;
 81         unsigned long clk_frequency;
 82         enum fimc_bus_type fimc_bus_type;
 83         enum fimc_bus_type sensor_bus_type;
 84         u16 flags;
 85         u16 i2c_bus_num;
 86         u16 mux_id;
 87         u8 clk_id;
 88 };
 89 
 90 /**
 91  * struct s5p_platform_fimc - camera host interface platform data
 92  *
 93  * @source_info: properties of an image source for the host interface setup
 94  * @num_clients: the number of attached image sources
 95  */
 96 struct s5p_platform_fimc {
 97         struct fimc_source_info *source_info;
 98         int num_clients;
 99 };
100 
101 /*
102  * v4l2_device notification id. This is only for internal use in the kernel.
103  * Sensor subdevs should issue S5P_FIMC_TX_END_NOTIFY notification in single
104  * frame capture mode when there is only one VSYNC pulse issued by the sensor
105  * at begining of the frame transmission.
106  */
107 #define S5P_FIMC_TX_END_NOTIFY _IO('e', 0)
108 
109 #define FIMC_MAX_PLANES 3
110 
111 /**
112  * struct fimc_fmt - color format data structure
113  * @mbus_code: media bus pixel code, -1 if not applicable
114  * @name: format description
115  * @fourcc: fourcc code for this format, 0 if not applicable
116  * @color: the driver's private color format id
117  * @memplanes: number of physically non-contiguous data planes
118  * @colplanes: number of physically contiguous data planes
119  * @colorspace: v4l2 colorspace (V4L2_COLORSPACE_*)
120  * @depth: per plane driver's private 'number of bits per pixel'
121  * @mdataplanes: bitmask indicating meta data plane(s), (1 << plane_no)
122  * @flags: flags indicating which operation mode format applies to
123  */
124 struct fimc_fmt {
125         enum v4l2_mbus_pixelcode mbus_code;
126         char    *name;
127         u32     fourcc;
128         u32     color;
129         u16     memplanes;
130         u16     colplanes;
131         u8      colorspace;
132         u8      depth[FIMC_MAX_PLANES];
133         u16     mdataplanes;
134         u16     flags;
135 #define FMT_FLAGS_CAM           (1 << 0)
136 #define FMT_FLAGS_M2M_IN        (1 << 1)
137 #define FMT_FLAGS_M2M_OUT       (1 << 2)
138 #define FMT_FLAGS_M2M           (1 << 1 | 1 << 2)
139 #define FMT_HAS_ALPHA           (1 << 3)
140 #define FMT_FLAGS_COMPRESSED    (1 << 4)
141 #define FMT_FLAGS_WRITEBACK     (1 << 5)
142 #define FMT_FLAGS_RAW_BAYER     (1 << 6)
143 #define FMT_FLAGS_YUV           (1 << 7)
144 };
145 
146 struct exynos_media_pipeline;
147 
148 /*
149  * Media pipeline operations to be called from within a video node,  i.e. the
150  * last entity within the pipeline. Implemented by related media device driver.
151  */
152 struct exynos_media_pipeline_ops {
153         int (*prepare)(struct exynos_media_pipeline *p,
154                                                 struct media_entity *me);
155         int (*unprepare)(struct exynos_media_pipeline *p);
156         int (*open)(struct exynos_media_pipeline *p, struct media_entity *me,
157                                                         bool resume);
158         int (*close)(struct exynos_media_pipeline *p);
159         int (*set_stream)(struct exynos_media_pipeline *p, bool state);
160 };
161 
162 struct exynos_video_entity {
163         struct video_device vdev;
164         struct exynos_media_pipeline *pipe;
165 };
166 
167 struct exynos_media_pipeline {
168         struct media_pipeline mp;
169         const struct exynos_media_pipeline_ops *ops;
170 };
171 
172 static inline struct exynos_video_entity *vdev_to_exynos_video_entity(
173                                         struct video_device *vdev)
174 {
175         return container_of(vdev, struct exynos_video_entity, vdev);
176 }
177 
178 #define fimc_pipeline_call(ent, op, args...)                              \
179         (!(ent) ? -ENOENT : (((ent)->pipe->ops && (ent)->pipe->ops->op) ? \
180         (ent)->pipe->ops->op(((ent)->pipe), ##args) : -ENOIOCTLCMD))      \
181 
182 #endif /* S5P_FIMC_H_ */
183 

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