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 "fimc-lite.h"
  22 #include "mipi-csis.h"
  23
  24 /* Group IDs of sensor, MIPI-CSIS, FIMC-LITE and the writeback subdevs. */
  25 #define SENSOR_GROUP_ID         (1 << 8)
  26 #define CSIS_GROUP_ID           (1 << 9)
  27 #define WRITEBACK_GROUP_ID      (1 << 10)
  28 #define FIMC_GROUP_ID           (1 << 11)
  29 #define FLITE_GROUP_ID          (1 << 12)
  30
  31 #define FIMC_MAX_SENSORS        8
  32 #define FIMC_MAX_CAMCLKS        2
  33
  34 struct fimc_csis_info {
  35         struct v4l2_subdev *sd;
  36         int id;
  37 };
  38
  39 struct fimc_camclk_info {
  40         struct clk *clock;
  41         int use_count;
  42         unsigned long frequency;
  43 };
  44
  45 /**
  46  * struct fimc_sensor_info - image data source subdev information
  47  * @pdata: sensor's atrributes passed as media device's platform data
  48  * @subdev: image sensor v4l2 subdev
  49  * @host: fimc device the sensor is currently linked to
  50  * @clk_on: sclk_cam clock's state associated with this subdev
  51  *
  52  * This data structure applies to image sensor and the writeback subdevs.
  53  */
  54 struct fimc_sensor_info {
  55         struct s5p_fimc_isp_info *pdata;
  56         struct v4l2_subdev *subdev;
  57         struct fimc_dev *host;
  58         bool clk_on;
  59 };
  60
  61 /**
  62  * struct fimc_md - fimc media device information
  63  * @csis: MIPI CSIS subdevs data
  64  * @sensor: array of registered sensor subdevs
  65  * @num_sensors: actual number of registered sensors
  66  * @camclk: external sensor clock information
  67  * @fimc: array of registered fimc devices
  68  * @media_dev: top level media device
  69  * @v4l2_dev: top level v4l2_device holding up the subdevs
  70  * @pdev: platform device this media device is hooked up into
  71  * @user_subdev_api: true if subdevs are not configured by the host driver
  72  * @slock: spinlock protecting @sensor array
  73  */
  74 struct fimc_md {
  75         struct fimc_csis_info csis[CSIS_MAX_ENTITIES];
  76         struct fimc_sensor_info sensor[FIMC_MAX_SENSORS];
  77         int num_sensors;
  78         struct fimc_camclk_info camclk[FIMC_MAX_CAMCLKS];
  79         struct fimc_lite *fimc_lite[FIMC_LITE_MAX_DEVS];
  80         struct fimc_dev *fimc[FIMC_MAX_DEVS];
  81         struct media_device media_dev;
  82         struct v4l2_device v4l2_dev;
  83         struct platform_device *pdev;
  84         bool user_subdev_api;
  85         spinlock_t slock;
  86 };
  87
  88 #define is_subdev_pad(pad) (pad == NULL || \
  89         media_entity_type(pad->entity) == MEDIA_ENT_T_V4L2_SUBDEV)
  90
  91 #define me_subtype(me) \
  92         ((me->type) & (MEDIA_ENT_TYPE_MASK | MEDIA_ENT_SUBTYPE_MASK))
  93
  94 #define subdev_has_devnode(__sd) (__sd->flags & V4L2_SUBDEV_FL_HAS_DEVNODE)
  95
  96 static inline struct fimc_md *entity_to_fimc_mdev(struct media_entity *me)
  97 {
  98         return me->parent == NULL ? NULL :
  99                 container_of(me->parent, struct fimc_md, media_dev);
 100 }
 101
 102 static inline void fimc_md_graph_lock(struct fimc_dev *fimc)
 103 {
 104         BUG_ON(fimc->vid_cap.vfd == NULL);
 105         mutex_lock(&fimc->vid_cap.vfd->entity.parent->graph_mutex);
 106 }
 107
 108 static inline void fimc_md_graph_unlock(struct fimc_dev *fimc)
 109 {
 110         BUG_ON(fimc->vid_cap.vfd == NULL);
 111         mutex_unlock(&fimc->vid_cap.vfd->entity.parent->graph_mutex);
 112 }
 113
 114 int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on);
 115 void fimc_pipeline_prepare(struct fimc_pipeline *p, struct media_entity *me);
 116 int fimc_pipeline_initialize(struct fimc_pipeline *p, struct media_entity *me,
 117                              bool resume);
 118 int fimc_pipeline_shutdown(struct fimc_pipeline *p);
 119 int fimc_pipeline_s_power(struct fimc_pipeline *p, bool state);
 120 int fimc_pipeline_s_stream(struct fimc_pipeline *p, bool state);
 121
 122 #endif