diff options
Diffstat (limited to 'drivers/media/platform/exynos4-is/media-dev.h')
| -rw-r--r-- | drivers/media/platform/exynos4-is/media-dev.h | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/drivers/media/platform/exynos4-is/media-dev.h b/drivers/media/platform/exynos4-is/media-dev.h new file mode 100644 index 000000000..957787a2f --- /dev/null +++ b/drivers/media/platform/exynos4-is/media-dev.h @@ -0,0 +1,211 @@ +/* + * 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; + struct media_graph link_setup_graph; +}; + +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->graph_obj.mdev == NULL ? NULL : + container_of(me->graph_obj.mdev, 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.graph_obj.mdev->graph_mutex); +} + +static inline void fimc_md_graph_unlock(struct exynos_video_entity *ve) +{ + mutex_unlock(&ve->vdev.entity.graph_obj.mdev->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 |