LXR linux/drivers/media/platform/exynos4-is/media-dev.h

   1/*
   2 * Copyright (C) 2011 - 2012 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 <linux/of.h>
  16#include <linux/pinctrl/consumer.h>
  17#include <media/media-device.h>
  18#include <media/media-entity.h>
  19#include <media/v4l2-device.h>
  20#include <media/v4l2-subdev.h>
  21
  22#include "fimc-core.h"
  23#include "fimc-lite.h"
  24#include "mipi-csis.h"
  25
  26#define FIMC_OF_NODE_NAME       "fimc"
  27#define FIMC_LITE_OF_NODE_NAME  "fimc-lite"
  28#define FIMC_IS_OF_NODE_NAME    "fimc-is"
  29#define CSIS_OF_NODE_NAME       "csis"
  30
  31#define PINCTRL_STATE_IDLE      "idle"
  32
  33#define FIMC_MAX_SENSORS        8
  34#define FIMC_MAX_CAMCLKS        2
  35
  36/* LCD/ISP Writeback clocks (PIXELASYNCMx) */
  37enum {
  38        CLK_IDX_WB_A,
  39        CLK_IDX_WB_B,
  40        FIMC_MAX_WBCLKS
  41};
  42
  43struct fimc_csis_info {
  44        struct v4l2_subdev *sd;
  45        int id;
  46};
  47
  48struct fimc_camclk_info {
  49        struct clk *clock;
  50        int use_count;
  51        unsigned long frequency;
  52};
  53
  54/**
  55 * struct fimc_sensor_info - image data source subdev information
  56 * @pdata: sensor's atrributes passed as media device's platform data
  57 * @subdev: image sensor v4l2 subdev
  58 * @host: fimc device the sensor is currently linked to
  59 *
  60 * This data structure applies to image sensor and the writeback subdevs.
  61 */
  62struct fimc_sensor_info {
  63        struct fimc_source_info pdata;
  64        struct v4l2_subdev *subdev;
  65        struct fimc_dev *host;
  66};
  67
  68/**
  69 * struct fimc_md - fimc media device information
  70 * @csis: MIPI CSIS subdevs data
  71 * @sensor: array of registered sensor subdevs
  72 * @num_sensors: actual number of registered sensors
  73 * @camclk: external sensor clock information
  74 * @fimc: array of registered fimc devices
  75 * @fimc_is: fimc-is data structure
  76 * @use_isp: set to true when FIMC-IS subsystem is used
  77 * @pmf: handle to the CAMCLK clock control FIMC helper device
  78 * @media_dev: top level media device
  79 * @v4l2_dev: top level v4l2_device holding up the subdevs
  80 * @pdev: platform device this media device is hooked up into
  81 * @pinctrl: camera port pinctrl handle
  82 * @state_default: pinctrl default state handle
  83 * @state_idle: pinctrl idle state handle
  84 * @user_subdev_api: true if subdevs are not configured by the host driver
  85 * @slock: spinlock protecting @sensor array
  86 */
  87struct fimc_md {
  88        struct fimc_csis_info csis[CSIS_MAX_ENTITIES];
  89        struct fimc_sensor_info sensor[FIMC_MAX_SENSORS];
  90        int num_sensors;
  91        struct fimc_camclk_info camclk[FIMC_MAX_CAMCLKS];
  92        struct clk *wbclk[FIMC_MAX_WBCLKS];
  93        struct fimc_lite *fimc_lite[FIMC_LITE_MAX_DEVS];
  94        struct fimc_dev *fimc[FIMC_MAX_DEVS];
  95        struct fimc_is *fimc_is;
  96        bool use_isp;
  97        struct device *pmf;
  98        struct media_device media_dev;
  99        struct v4l2_device v4l2_dev;
 100        struct platform_device *pdev;
 101        struct fimc_pinctrl {
 102                struct pinctrl *pinctrl;
 103                struct pinctrl_state *state_default;
 104                struct pinctrl_state *state_idle;
 105        } pinctl;
 106        bool user_subdev_api;
 107        spinlock_t slock;
 108};
 109
 110#define is_subdev_pad(pad) (pad == NULL || \
 111        media_entity_type(pad->entity) == MEDIA_ENT_T_V4L2_SUBDEV)
 112
 113#define me_subtype(me) \
 114        ((me->type) & (MEDIA_ENT_TYPE_MASK | MEDIA_ENT_SUBTYPE_MASK))
 115
 116#define subdev_has_devnode(__sd) (__sd->flags & V4L2_SUBDEV_FL_HAS_DEVNODE)
 117
 118static inline
 119struct fimc_sensor_info *source_to_sensor_info(struct fimc_source_info *si)
 120{
 121        return container_of(si, struct fimc_sensor_info, pdata);
 122}
 123
 124static inline struct fimc_md *entity_to_fimc_mdev(struct media_entity *me)
 125{
 126        return me->parent == NULL ? NULL :
 127                container_of(me->parent, struct fimc_md, media_dev);
 128}
 129
 130static inline void fimc_md_graph_lock(struct fimc_dev *fimc)
 131{
 132        mutex_lock(&fimc->vid_cap.vfd.entity.parent->graph_mutex);
 133}
 134
 135static inline void fimc_md_graph_unlock(struct fimc_dev *fimc)
 136{
 137        mutex_unlock(&fimc->vid_cap.vfd.entity.parent->graph_mutex);
 138}
 139
 140int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on);
 141
 142#ifdef CONFIG_OF
 143static inline bool fimc_md_is_isp_available(struct device_node *node)
 144{
 145        node = of_get_child_by_name(node, FIMC_IS_OF_NODE_NAME);
 146        return node ? of_device_is_available(node) : false;
 147}
 148#else
 149#define fimc_md_is_isp_available(node) (false)
 150#endif /* CONFIG_OF */
 151
 152#endif
 153