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/*
* Copyright (C) 2011 - 2012 Samsung Electronics Co., Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef FIMC_MDEVICE_H_
#define FIMC_MDEVICE_H_
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/platform_device.h>
#include <linux/mutex.h>
#include <linux/of.h>
#include <linux/pinctrl/consumer.h>
#include <media/media-device.h>
#include <media/media-entity.h>
#include <media/v4l2-device.h>
#include <media/v4l2-subdev.h>
#include <media/drv-intf/exynos-fimc.h>
#include "fimc-core.h"
#include "fimc-lite.h"
#include "mipi-csis.h"
#define FIMC_OF_NODE_NAME "fimc"
#define FIMC_LITE_OF_NODE_NAME "fimc-lite"
#define FIMC_IS_OF_NODE_NAME "fimc-is"
#define CSIS_OF_NODE_NAME "csis"
#define PINCTRL_STATE_IDLE "idle"
#define FIMC_MAX_SENSORS 4
#define FIMC_MAX_CAMCLKS 2
#define DEFAULT_SENSOR_CLK_FREQ 24000000U
/* LCD/ISP Writeback clocks (PIXELASYNCMx) */
enum {
CLK_IDX_WB_A,
CLK_IDX_WB_B,
FIMC_MAX_WBCLKS
};
enum fimc_subdev_index {
IDX_SENSOR,
IDX_CSIS,
IDX_FLITE,
IDX_IS_ISP,
IDX_FIMC,
IDX_MAX,
};
/*
* This structure represents a chain of media entities, including a data
* source entity (e.g. an image sensor subdevice), a data capture entity
* - a video capture device node and any remaining entities.
*/
struct fimc_pipeline {
struct exynos_media_pipeline ep;
struct list_head list;
struct media_entity *vdev_entity;
struct v4l2_subdev *subdevs[IDX_MAX];
};
#define to_fimc_pipeline(_ep) container_of(_ep, struct fimc_pipeline, ep)
struct fimc_csis_info {
struct v4l2_subdev *sd;
int id;
};
struct fimc_camclk_info {
struct clk *clock;
int use_count;
unsigned long frequency;
};
/**
* struct fimc_sensor_info - image data source subdev information
* @pdata: sensor's atrributes passed as media device's platform data
* @asd: asynchronous subdev registration data structure
* @subdev: image sensor v4l2 subdev
* @host: fimc device the sensor is currently linked to
*
* This data structure applies to image sensor and the writeback subdevs.
*/
struct fimc_sensor_info {
struct fimc_source_info pdata;
struct v4l2_async_subdev asd;
struct v4l2_subdev *subdev;
struct fimc_dev *host;
};
struct cam_clk {
struct clk_hw hw;
struct fimc_md *fmd;
};
#define to_cam_clk(_hw) container_of(_hw, struct cam_clk, hw)
/**
* struct fimc_md - fimc media device information
* @csis: MIPI CSIS subdevs data
* @sensor: array of registered sensor subdevs
* @num_sensors: actual number of registered sensors
* @camclk: external sensor clock information
* @fimc: array of registered fimc devices
* @fimc_is: fimc-is data structure
* @use_isp: set to true when FIMC-IS subsystem is used
* @pmf: handle to the CAMCLK clock control FIMC helper device
* @media_dev: top level media device
* @v4l2_dev: top level v4l2_device holding up the subdevs
* @pdev: platform device this media device is hooked up into
* @pinctrl: camera port pinctrl handle
* @state_default: pinctrl default state handle
* @state_idle: pinctrl idle state handle
* @cam_clk_provider: CAMCLK clock provider structure
* @user_subdev_api: true if subdevs are not configured by the host driver
* @slock: spinlock protecting @sensor array
*/
struct fimc_md {
struct fimc_csis_info csis[CSIS_MAX_ENTITIES];
struct fimc_sensor_info sensor[FIMC_MAX_SENSORS];
int num_sensors;
struct fimc_camclk_info camclk[FIMC_MAX_CAMCLKS];
struct clk *wbclk[FIMC_MAX_WBCLKS];
struct fimc_lite *fimc_lite[FIMC_LITE_MAX_DEVS];
struct fimc_dev *fimc[FIMC_MAX_DEVS];
struct fimc_is *fimc_is;
bool use_isp;
struct device *pmf;
struct media_device media_dev;
struct v4l2_device v4l2_dev;
struct platform_device *pdev;
struct fimc_pinctrl {
struct pinctrl *pinctrl;
struct pinctrl_state *state_default;
struct pinctrl_state *state_idle;
} pinctl;
struct cam_clk_provider {
struct clk *clks[FIMC_MAX_CAMCLKS];
struct clk_onecell_data clk_data;
struct device_node *of_node;
struct cam_clk camclk[FIMC_MAX_CAMCLKS];
int num_clocks;
} clk_provider;
struct v4l2_async_notifier subdev_notifier;
struct v4l2_async_subdev *async_subdevs[FIMC_MAX_SENSORS];
bool user_subdev_api;
spinlock_t slock;
struct list_head pipelines;
};
static inline
struct fimc_sensor_info *source_to_sensor_info(struct fimc_source_info *si)
{
return container_of(si, struct fimc_sensor_info, pdata);
}
static inline struct fimc_md *entity_to_fimc_mdev(struct media_entity *me)
{
return me->parent == NULL ? NULL :
container_of(me->parent, struct fimc_md, media_dev);
}
static inline struct fimc_md *notifier_to_fimc_md(struct v4l2_async_notifier *n)
{
return container_of(n, struct fimc_md, subdev_notifier);
}
static inline void fimc_md_graph_lock(struct exynos_video_entity *ve)
{
mutex_lock(&ve->vdev.entity.parent->graph_mutex);
}
static inline void fimc_md_graph_unlock(struct exynos_video_entity *ve)
{
mutex_unlock(&ve->vdev.entity.parent->graph_mutex);
}
int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on);
#ifdef CONFIG_OF
static inline bool fimc_md_is_isp_available(struct device_node *node)
{
node = of_get_child_by_name(node, FIMC_IS_OF_NODE_NAME);
return node ? of_device_is_available(node) : false;
}
#else
#define fimc_md_is_isp_available(node) (false)
#endif /* CONFIG_OF */
static inline struct v4l2_subdev *__fimc_md_get_subdev(
struct exynos_media_pipeline *ep,
unsigned int index)
{
struct fimc_pipeline *p = to_fimc_pipeline(ep);
if (!p || index >= IDX_MAX)
return NULL;
else
return p->subdevs[index];
}
#endif
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