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
source_to_sensor_info(struct fimc_source_info * si)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
entity_to_fimc_mdev(struct media_entity * me)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
notifier_to_fimc_md(struct v4l2_async_notifier * n)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
fimc_md_graph_lock(struct exynos_video_entity * ve)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
fimc_md_graph_unlock(struct exynos_video_entity * ve)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
fimc_md_is_isp_available(struct device_node * node)179 static inline bool fimc_md_is_isp_available(struct device_node *node)
180 {
181 node = of_get_child_by_name(node, FIMC_IS_OF_NODE_NAME);
182 return node ? of_device_is_available(node) : false;
183 }
184 #else
185 #define fimc_md_is_isp_available(node) (false)
186 #endif /* CONFIG_OF */
187
__fimc_md_get_subdev(struct exynos_media_pipeline * ep,unsigned int index)188 static inline struct v4l2_subdev *__fimc_md_get_subdev(
189 struct exynos_media_pipeline *ep,
190 unsigned int index)
191 {
192 struct fimc_pipeline *p = to_fimc_pipeline(ep);
193
194 if (!p || index >= IDX_MAX)
195 return NULL;
196 else
197 return p->subdevs[index];
198 }
199
200 #endif
201