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1 | /* |
2 | * Copyright (C) 2012 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_LITE_H_ | |
10 | #define FIMC_LITE_H_ | |
11 | ||
12 | #include <asm/sizes.h> | |
13 | #include <linux/io.h> | |
14 | #include <linux/irqreturn.h> | |
15 | #include <linux/platform_device.h> | |
16 | #include <linux/sched.h> | |
17 | #include <linux/spinlock.h> | |
18 | #include <linux/types.h> | |
19 | #include <linux/videodev2.h> | |
20 | ||
21 | #include <media/media-entity.h> | |
22 | #include <media/videobuf2-core.h> | |
23 | #include <media/v4l2-device.h> | |
24 | #include <media/v4l2-mediabus.h> | |
25 | #include <media/s5p_fimc.h> | |
26 | ||
27 | #include "fimc-core.h" | |
28 | ||
29 | #define FIMC_LITE_DRV_NAME "exynos-fimc-lite" | |
30 | #define FLITE_CLK_NAME "flite" | |
31 | #define FIMC_LITE_MAX_DEVS 2 | |
32 | #define FLITE_REQ_BUFS_MIN 2 | |
33 | ||
34 | /* Bit index definitions for struct fimc_lite::state */ | |
35 | enum { | |
36 | ST_FLITE_LPM, | |
37 | ST_FLITE_PENDING, | |
38 | ST_FLITE_RUN, | |
39 | ST_FLITE_STREAM, | |
40 | ST_FLITE_SUSPENDED, | |
41 | ST_FLITE_OFF, | |
42 | ST_FLITE_IN_USE, | |
43 | ST_FLITE_CONFIG, | |
44 | ST_SENSOR_STREAM, | |
45 | }; | |
46 | ||
47 | #define FLITE_SD_PAD_SINK 0 | |
48 | #define FLITE_SD_PAD_SOURCE 1 | |
49 | #define FLITE_SD_PADS_NUM 2 | |
50 | ||
51 | struct flite_variant { | |
52 | unsigned short max_width; | |
53 | unsigned short max_height; | |
54 | unsigned short out_width_align; | |
55 | unsigned short win_hor_offs_align; | |
56 | unsigned short out_hor_offs_align; | |
57 | }; | |
58 | ||
59 | struct flite_drvdata { | |
60 | struct flite_variant *variant[FIMC_LITE_MAX_DEVS]; | |
61 | }; | |
62 | ||
63 | #define fimc_lite_get_drvdata(_pdev) \ | |
64 | ((struct flite_drvdata *) platform_get_device_id(_pdev)->driver_data) | |
65 | ||
66 | struct fimc_lite_events { | |
67 | unsigned int data_overflow; | |
68 | }; | |
69 | ||
70 | #define FLITE_MAX_PLANES 1 | |
71 | ||
72 | /** | |
73 | * struct flite_frame - source/target frame properties | |
74 | * @f_width: full pixel width | |
75 | * @f_height: full pixel height | |
76 | * @rect: crop/composition rectangle | |
77 | */ | |
78 | struct flite_frame { | |
79 | u16 f_width; | |
80 | u16 f_height; | |
81 | struct v4l2_rect rect; | |
82 | }; | |
83 | ||
84 | /** | |
85 | * struct flite_buffer - video buffer structure | |
86 | * @vb: vb2 buffer | |
87 | * @list: list head for the buffers queue | |
88 | * @paddr: precalculated physical address | |
89 | */ | |
90 | struct flite_buffer { | |
91 | struct vb2_buffer vb; | |
92 | struct list_head list; | |
93 | dma_addr_t paddr; | |
94 | }; | |
95 | ||
96 | /** | |
97 | * struct fimc_lite - fimc lite structure | |
98 | * @pdev: pointer to FIMC-LITE platform device | |
99 | * @variant: variant information for this IP | |
100 | * @v4l2_dev: pointer to top the level v4l2_device | |
101 | * @vfd: video device node | |
102 | * @fh: v4l2 file handle | |
103 | * @alloc_ctx: videobuf2 memory allocator context | |
104 | * @subdev: FIMC-LITE subdev | |
105 | * @vd_pad: media (sink) pad for the capture video node | |
106 | * @subdev_pads: the subdev media pads | |
107 | * @ctrl_handler: v4l2 control handler | |
108 | * @test_pattern: test pattern controls | |
109 | * @index: FIMC-LITE platform device index | |
110 | * @pipeline: video capture pipeline data structure | |
b9ee31e6 | 111 | * @pipeline_ops: media pipeline ops for the video node driver |
2b511edb SN |
112 | * @slock: spinlock protecting this data structure and the hw registers |
113 | * @lock: mutex serializing video device and the subdev operations | |
114 | * @clock: FIMC-LITE gate clock | |
115 | * @regs: memory mapped io registers | |
116 | * @irq_queue: interrupt handler waitqueue | |
117 | * @fmt: pointer to color format description structure | |
118 | * @payload: image size in bytes (w x h x bpp) | |
119 | * @inp_frame: camera input frame structure | |
120 | * @out_frame: DMA output frame structure | |
121 | * @out_path: output data path (DMA or FIFO) | |
122 | * @source_subdev_grp_id: source subdev group id | |
123 | * @state: driver state flags | |
124 | * @pending_buf_q: pending buffers queue head | |
125 | * @active_buf_q: the queue head of buffers scheduled in hardware | |
126 | * @vb_queue: vb2 buffers queue | |
127 | * @active_buf_count: number of video buffers scheduled in hardware | |
128 | * @frame_count: the captured frames counter | |
129 | * @reqbufs_count: the number of buffers requested with REQBUFS ioctl | |
130 | * @ref_count: driver's private reference counter | |
131 | */ | |
132 | struct fimc_lite { | |
133 | struct platform_device *pdev; | |
134 | struct flite_variant *variant; | |
135 | struct v4l2_device *v4l2_dev; | |
1bcd7041 | 136 | struct video_device vfd; |
2b511edb SN |
137 | struct v4l2_fh fh; |
138 | struct vb2_alloc_ctx *alloc_ctx; | |
139 | struct v4l2_subdev subdev; | |
140 | struct media_pad vd_pad; | |
141 | struct media_pad subdev_pads[FLITE_SD_PADS_NUM]; | |
142 | struct v4l2_ctrl_handler ctrl_handler; | |
143 | struct v4l2_ctrl *test_pattern; | |
144 | u32 index; | |
145 | struct fimc_pipeline pipeline; | |
b9ee31e6 | 146 | const struct fimc_pipeline_ops *pipeline_ops; |
2b511edb SN |
147 | |
148 | struct mutex lock; | |
149 | spinlock_t slock; | |
150 | ||
151 | struct clk *clock; | |
152 | void __iomem *regs; | |
153 | wait_queue_head_t irq_queue; | |
154 | ||
155 | const struct fimc_fmt *fmt; | |
156 | unsigned long payload[FLITE_MAX_PLANES]; | |
157 | struct flite_frame inp_frame; | |
158 | struct flite_frame out_frame; | |
159 | enum fimc_datapath out_path; | |
160 | unsigned int source_subdev_grp_id; | |
161 | ||
162 | unsigned long state; | |
163 | struct list_head pending_buf_q; | |
164 | struct list_head active_buf_q; | |
165 | struct vb2_queue vb_queue; | |
166 | unsigned int frame_count; | |
167 | unsigned int reqbufs_count; | |
168 | int ref_count; | |
169 | ||
170 | struct fimc_lite_events events; | |
171 | }; | |
172 | ||
173 | static inline bool fimc_lite_active(struct fimc_lite *fimc) | |
174 | { | |
175 | unsigned long flags; | |
176 | bool ret; | |
177 | ||
178 | spin_lock_irqsave(&fimc->slock, flags); | |
179 | ret = fimc->state & (1 << ST_FLITE_RUN) || | |
180 | fimc->state & (1 << ST_FLITE_PENDING); | |
181 | spin_unlock_irqrestore(&fimc->slock, flags); | |
182 | return ret; | |
183 | } | |
184 | ||
185 | static inline void fimc_lite_active_queue_add(struct fimc_lite *dev, | |
186 | struct flite_buffer *buf) | |
187 | { | |
188 | list_add_tail(&buf->list, &dev->active_buf_q); | |
189 | } | |
190 | ||
191 | static inline struct flite_buffer *fimc_lite_active_queue_pop( | |
192 | struct fimc_lite *dev) | |
193 | { | |
194 | struct flite_buffer *buf = list_entry(dev->active_buf_q.next, | |
195 | struct flite_buffer, list); | |
196 | list_del(&buf->list); | |
197 | return buf; | |
198 | } | |
199 | ||
200 | static inline void fimc_lite_pending_queue_add(struct fimc_lite *dev, | |
201 | struct flite_buffer *buf) | |
202 | { | |
203 | list_add_tail(&buf->list, &dev->pending_buf_q); | |
204 | } | |
205 | ||
206 | static inline struct flite_buffer *fimc_lite_pending_queue_pop( | |
207 | struct fimc_lite *dev) | |
208 | { | |
209 | struct flite_buffer *buf = list_entry(dev->pending_buf_q.next, | |
210 | struct flite_buffer, list); | |
211 | list_del(&buf->list); | |
212 | return buf; | |
213 | } | |
214 | ||
215 | #endif /* FIMC_LITE_H_ */ |