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