1 /*
2 * Copyright (C) 2011 Samsung Electronics Co., Ltd.
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9 #ifndef FIMC_MDEVICE_H_
10 #define FIMC_MDEVICE_H_
11
12 #include <linux/clk.h>
13 #include <linux/platform_device.h>
14 #include <linux/mutex.h>
15 #include <media/media-device.h>
16 #include <media/media-entity.h>
17 #include <media/v4l2-device.h>
18 #include <media/v4l2-subdev.h>
19
20 #include "fimc-core.h"
21 #include "mipi-csis.h"
22
23 /* Group IDs of sensor, MIPI CSIS and the writeback subdevs. */
24 #define SENSOR_GROUP_ID (1 << 8)
25 #define CSIS_GROUP_ID (1 << 9)
26 #define WRITEBACK_GROUP_ID (1 << 10)
27
28 #define FIMC_MAX_SENSORS 8
29 #define FIMC_MAX_CAMCLKS 2
30
31 struct fimc_csis_info {
32 struct v4l2_subdev *sd;
33 int id;
34 };
35
36 struct fimc_camclk_info {
37 struct clk *clock;
38 int use_count;
39 unsigned long frequency;
40 };
41
42 /**
43 * struct fimc_sensor_info - image data source subdev information
44 * @pdata: sensor's atrributes passed as media device's platform data
45 * @subdev: image sensor v4l2 subdev
46 * @host: fimc device the sensor is currently linked to
47 * @clk_on: sclk_cam clock's state associated with this subdev
48 *
49 * This data structure applies to image sensor and the writeback subdevs.
50 */
51 struct fimc_sensor_info {
52 struct s5p_fimc_isp_info *pdata;
53 struct v4l2_subdev *subdev;
54 struct fimc_dev *host;
55 bool clk_on;
56 };
57
58 /**
59 * struct fimc_md - fimc media device information
60 * @csis: MIPI CSIS subdevs data
61 * @sensor: array of registered sensor subdevs
62 * @num_sensors: actual number of registered sensors
63 * @camclk: external sensor clock information
64 * @fimc: array of registered fimc devices
65 * @media_dev: top level media device
66 * @v4l2_dev: top level v4l2_device holding up the subdevs
67 * @pdev: platform device this media device is hooked up into
68 * @user_subdev_api: true if subdevs are not configured by the host driver
69 * @slock: spinlock protecting @sensor array
70 */
71 struct fimc_md {
72 struct fimc_csis_info csis[CSIS_MAX_ENTITIES];
73 struct fimc_sensor_info sensor[FIMC_MAX_SENSORS];
74 int num_sensors;
75 struct fimc_camclk_info camclk[FIMC_MAX_CAMCLKS];
76 struct fimc_dev *fimc[FIMC_MAX_DEVS];
77 struct media_device media_dev;
78 struct v4l2_device v4l2_dev;
79 struct platform_device *pdev;
80 bool user_subdev_api;
81 spinlock_t slock;
82 };
83
84 #define is_subdev_pad(pad) (pad == NULL || \
85 media_entity_type(pad->entity) == MEDIA_ENT_T_V4L2_SUBDEV)
86
87 #define me_subtype(me) \
88 ((me->type) & (MEDIA_ENT_TYPE_MASK | MEDIA_ENT_SUBTYPE_MASK))
89
90 #define subdev_has_devnode(__sd) (__sd->flags & V4L2_SUBDEV_FL_HAS_DEVNODE)
91
entity_to_fimc_mdev(struct media_entity * me)92 static inline struct fimc_md *entity_to_fimc_mdev(struct media_entity *me)
93 {
94 return me->parent == NULL ? NULL :
95 container_of(me->parent, struct fimc_md, media_dev);
96 }
97
fimc_md_graph_lock(struct fimc_dev * fimc)98 static inline void fimc_md_graph_lock(struct fimc_dev *fimc)
99 {
100 BUG_ON(fimc->vid_cap.vfd == NULL);
101 mutex_lock(&fimc->vid_cap.vfd->entity.parent->graph_mutex);
102 }
103
fimc_md_graph_unlock(struct fimc_dev * fimc)104 static inline void fimc_md_graph_unlock(struct fimc_dev *fimc)
105 {
106 BUG_ON(fimc->vid_cap.vfd == NULL);
107 mutex_unlock(&fimc->vid_cap.vfd->entity.parent->graph_mutex);
108 }
109
110 int fimc_md_set_camclk(struct v4l2_subdev *sd, bool on);
111 void fimc_pipeline_prepare(struct fimc_dev *fimc, struct media_entity *me);
112 int fimc_pipeline_initialize(struct fimc_dev *fimc, struct media_entity *me,
113 bool resume);
114 int fimc_pipeline_shutdown(struct fimc_dev *fimc);
115 int fimc_pipeline_s_power(struct fimc_dev *fimc, int state);
116 int fimc_pipeline_s_stream(struct fimc_dev *fimc, int state);
117
118 #endif
119