drivers/media/video/s5p-fimc/fimc-mdevice.h

   1 /*
   2  * Copyright (C) 2011 Samsung Electronics Co., Ltd.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  */
   8
   9 #ifndef FIMC_MDEVICE_H_
  10 #define FIMC_MDEVICE_H_
  11
  12 #include <linux/clk.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/mutex.h>
  15 #include <media/media-device.h>
  16 #include <media/media-entity.h>
  17 #include <media/v4l2-device.h>
  18 #include <media/v4l2-subdev.h>
  19
  20 #include "fimc-core.h"
  21 #include "mipi-csis.h"
  22
  23 /* Group IDs of sensor, MIPI CSIS and the writeback subdevs. */
  24 #define SENSOR_GROUP_ID         (1 << 8)
  25 #define CSIS_GROUP_ID           (1 << 9)
  26 #define WRITEBACK_GROUP_ID      (1 << 10)
  27
  28 #define FIMC_MAX_SENSORS        8
  29 #define FIMC_MAX_CAMCLKS        2
  30
  31 struct fimc_csis_info {
  32         struct v4l2_subdev *sd;
  33         int id;
  34 };
  35
  36 struct fimc_camclk_info {
  37         struct clk *clock;
  38         int use_count;
  39         unsigned long frequency;
  40 };
  41
  42 /**
  43  * struct fimc_sensor_info - image data source subdev information
  44  * @pdata: sensor's atrributes passed as media device's platform data
  45  * @subdev: image sensor v4l2 subdev
  46  * @host: fimc device the sensor is currently linked to
  47  * @clk_on: sclk_cam clock's state associated with this subdev
  48  *
  49  * This data structure applies to image sensor and the writeback subdevs.
  50  */
  51 struct fimc_sensor_info {
  52         struct s5p_fimc_isp_info *pdata;
  53         struct v4l2_subdev *subdev;
  54         struct fimc_dev *host;
  55         bool clk_on;
  56 };
  57
  58 /**
  59  * struct fimc_md - fimc media device information
  60  * @csis: MIPI CSIS subdevs data
  61  * @sensor: array of registered sensor subdevs
  62  * @num_sensors: actual number of registered sensors
  63  * @camclk: external sensor clock information
  64  * @fimc: array of registered fimc devices
  65  * @media_dev: top level media device
  66  * @v4l2_dev: top level v4l2_device holding up the subdevs
  67  * @pdev: platform device this media device is hooked up into
  68  * @user_subdev_api: true if subdevs are not configured by the host driver
  69  * @slock: spinlock protecting @sensor array
  70  */
  71 struct fimc_md {
  72         struct fimc_csis_info csis[CSIS_MAX_ENTITIES];
  73         struct fimc_sensor_info sensor[FIMC_MAX_SENSORS];
  74         int num_sensors;
  75         struct fimc_camclk_info camclk[FIMC_MAX_CAMCLKS];
  76         struct fimc_dev *fimc[FIMC_MAX_DEVS];
  77         struct media_device media_dev;
  78         struct v4l2_device v4l2_dev;
  79         struct platform_device *pdev;
  80         bool user_subdev_api;
  81         spinlock_t slock;
  82 };
  83
  84 #define is_subdev_pad(pad) (pad == NULL || \
  85         media_entity_type(pad->entity) == MEDIA_ENT_T_V4L2_SUBDEV)
  86
  87 #define me_subtype(me) \
  88         ((me->type) & (MEDIA_ENT_TYPE_MASK | MEDIA_ENT_SUBTYPE_MASK))
  89
  90 #define subdev_has_devnode(__sd) (__sd->flags & V4L2_SUBDEV_FL_HAS_DEVNODE)
  91
  92 static inline struct fimc_md *entity_to_fimc_mdev(struct media_entity *me)
  93 {
  94         return me->parent == NULL ? NULL :
  95                 container_of(me->parent, struct fimc_md, media_dev);
  96 }
  97
  98 static inline void fimc_md_graph_lock(struct fimc_dev *fimc)
  99 {
 100         BUG_ON(fimc->vid_cap.vfd == NULL);
 101         mutex_lock(&fimc->vid_cap.vfd->entity.parent->graph_mutex);
 102 }
 103
 104 static inline void fimc_md_graph_unlock(struct fimc_dev *fimc)
 105 {
 106         BUG_ON(fimc->vid_cap.vfd == NULL);
 107         mutex_unlock(&fimc->vid_cap.vfd->entity.parent->graph_mutex);
 108 }
 109
 110 int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on);
 111 void fimc_pipeline_prepare(struct fimc_dev *fimc, struct media_entity *me);
 112 int fimc_pipeline_initialize(struct fimc_dev *fimc, struct media_entity *me,
 113                              bool resume);
 114 int fimc_pipeline_shutdown(struct fimc_dev *fimc);
 115 int fimc_pipeline_s_power(struct fimc_dev *fimc, int state);
 116 int fimc_pipeline_s_stream(struct fimc_dev *fimc, int state);
 117
 118 #endif