1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (C) 2011 - 2012 Samsung Electronics Co., Ltd. 4 */ 5 6 #ifndef FIMC_MDEVICE_H_ 7 #define FIMC_MDEVICE_H_ 8 9 #include <linux/clk.h> 10 #include <linux/clk-provider.h> 11 #include <linux/platform_device.h> 12 #include <linux/mutex.h> 13 #include <linux/of.h> 14 #include <media/media-device.h> 15 #include <media/media-entity.h> 16 #include <media/v4l2-device.h> 17 #include <media/v4l2-subdev.h> 18 #include <media/drv-intf/exynos-fimc.h> 19 20 #include "fimc-core.h" 21 #include "fimc-lite.h" 22 #include "mipi-csis.h" 23 24 #define FIMC_OF_NODE_NAME "fimc" 25 #define FIMC_LITE_OF_NODE_NAME "fimc-lite" 26 #define FIMC_IS_OF_NODE_NAME "fimc-is" 27 #define CSIS_OF_NODE_NAME "csis" 28 29 #define FIMC_MAX_SENSORS 4 30 #define FIMC_MAX_CAMCLKS 2 31 #define DEFAULT_SENSOR_CLK_FREQ 24000000U 32 33 /* LCD/ISP Writeback clocks (PIXELASYNCMx) */ 34 enum { 35 CLK_IDX_WB_A, 36 CLK_IDX_WB_B, 37 FIMC_MAX_WBCLKS 38 }; 39 40 enum fimc_subdev_index { 41 IDX_SENSOR, 42 IDX_CSIS, 43 IDX_FLITE, 44 IDX_IS_ISP, 45 IDX_FIMC, 46 IDX_MAX, 47 }; 48 49 /* 50 * This structure represents a chain of media entities, including a data 51 * source entity (e.g. an image sensor subdevice), a data capture entity 52 * - a video capture device node and any remaining entities. 53 */ 54 struct fimc_pipeline { 55 struct exynos_media_pipeline ep; 56 struct list_head list; 57 struct media_entity *vdev_entity; 58 struct v4l2_subdev *subdevs[IDX_MAX]; 59 }; 60 61 #define to_fimc_pipeline(_ep) container_of(_ep, struct fimc_pipeline, ep) 62 63 struct fimc_csis_info { 64 struct v4l2_subdev *sd; 65 int id; 66 }; 67 68 struct fimc_camclk_info { 69 struct clk *clock; 70 int use_count; 71 unsigned long frequency; 72 }; 73 74 /** 75 * struct fimc_sensor_info - image data source subdev information 76 * @pdata: sensor's attributes passed as media device's platform data 77 * @asd: asynchronous subdev registration data structure 78 * @subdev: image sensor v4l2 subdev 79 * @host: fimc device the sensor is currently linked to 80 * 81 * This data structure applies to image sensor and the writeback subdevs. 82 */ 83 struct fimc_sensor_info { 84 struct fimc_source_info pdata; 85 struct v4l2_async_connection *asd; 86 struct v4l2_subdev *subdev; 87 struct fimc_dev *host; 88 }; 89 90 struct cam_clk { 91 struct clk_hw hw; 92 struct fimc_md *fmd; 93 }; 94 #define to_cam_clk(_hw) container_of(_hw, struct cam_clk, hw) 95 96 /** 97 * struct fimc_md - fimc media device information 98 * @csis: MIPI CSIS subdevs data 99 * @sensor: array of registered sensor subdevs 100 * @num_sensors: actual number of registered sensors 101 * @camclk: external sensor clock information 102 * @wbclk: external writeback clock information 103 * @fimc_lite: array of registered fimc-lite devices 104 * @fimc: array of registered fimc devices 105 * @fimc_is: fimc-is data structure 106 * @use_isp: set to true when FIMC-IS subsystem is used 107 * @pmf: handle to the CAMCLK clock control FIMC helper device 108 * @media_dev: top level media device 109 * @v4l2_dev: top level v4l2_device holding up the subdevs 110 * @pdev: platform device this media device is hooked up into 111 * @clk_provider: CAMCLK clock provider structure 112 * @subdev_notifier: notifier for the subdevs 113 * @user_subdev_api: true if subdevs are not configured by the host driver 114 * @slock: spinlock protecting @sensor array 115 * @pipelines: list of pipelines 116 * @link_setup_graph: graph iterator 117 */ 118 struct fimc_md { 119 struct fimc_csis_info csis[CSIS_MAX_ENTITIES]; 120 struct fimc_sensor_info sensor[FIMC_MAX_SENSORS]; 121 int num_sensors; 122 struct fimc_camclk_info camclk[FIMC_MAX_CAMCLKS]; 123 struct clk *wbclk[FIMC_MAX_WBCLKS]; 124 struct fimc_lite *fimc_lite[FIMC_LITE_MAX_DEVS]; 125 struct fimc_dev *fimc[FIMC_MAX_DEVS]; 126 struct fimc_is *fimc_is; 127 bool use_isp; 128 struct device *pmf; 129 struct media_device media_dev; 130 struct v4l2_device v4l2_dev; 131 struct platform_device *pdev; 132 133 struct cam_clk_provider { 134 struct clk *clks[FIMC_MAX_CAMCLKS]; 135 struct clk_onecell_data clk_data; 136 struct device_node *of_node; 137 struct cam_clk camclk[FIMC_MAX_CAMCLKS]; 138 int num_clocks; 139 } clk_provider; 140 141 struct v4l2_async_notifier subdev_notifier; 142 143 bool user_subdev_api; 144 spinlock_t slock; 145 struct list_head pipelines; 146 struct media_graph link_setup_graph; 147 }; 148 149 static inline 150 struct fimc_sensor_info *source_to_sensor_info(struct fimc_source_info *si) 151 { 152 return container_of(si, struct fimc_sensor_info, pdata); 153 } 154 155 static inline struct fimc_md *entity_to_fimc_mdev(struct media_entity *me) 156 { 157 return me->graph_obj.mdev == NULL ? NULL : 158 container_of(me->graph_obj.mdev, struct fimc_md, media_dev); 159 } 160 161 static inline struct fimc_md *notifier_to_fimc_md(struct v4l2_async_notifier *n) 162 { 163 return container_of(n, struct fimc_md, subdev_notifier); 164 } 165 166 static inline void fimc_md_graph_lock(struct exynos_video_entity *ve) 167 { 168 mutex_lock(&ve->vdev.entity.graph_obj.mdev->graph_mutex); 169 } 170 171 static inline void fimc_md_graph_unlock(struct exynos_video_entity *ve) 172 { 173 mutex_unlock(&ve->vdev.entity.graph_obj.mdev->graph_mutex); 174 } 175 176 int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on); 177 178 #ifdef CONFIG_OF 179 static inline bool fimc_md_is_isp_available(struct device_node *node) 180 { 181 struct device_node *child __free(device_node) = 182 of_get_child_by_name(node, FIMC_IS_OF_NODE_NAME); 183 return child ? of_device_is_available(child) : false; 184 } 185 #else 186 #define fimc_md_is_isp_available(node) (false) 187 #endif /* CONFIG_OF */ 188 189 static inline struct v4l2_subdev *__fimc_md_get_subdev( 190 struct exynos_media_pipeline *ep, 191 unsigned int index) 192 { 193 struct fimc_pipeline *p = to_fimc_pipeline(ep); 194 195 if (!p || index >= IDX_MAX) 196 return NULL; 197 else 198 return p->subdevs[index]; 199 } 200 201 #endif 202