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2b511edb SN |
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 | ||
25422781 | 12 | #include <linux/sizes.h> |
2b511edb SN |
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> | |
c139990e | 22 | #include <media/videobuf2-v4l2.h> |
80f958f4 | 23 | #include <media/v4l2-ctrls.h> |
2b511edb SN |
24 | #include <media/v4l2-device.h> |
25 | #include <media/v4l2-mediabus.h> | |
49b2f4c5 | 26 | #include <media/exynos-fimc.h> |
2b511edb | 27 | |
2b511edb SN |
28 | #define FIMC_LITE_DRV_NAME "exynos-fimc-lite" |
29 | #define FLITE_CLK_NAME "flite" | |
086eca29 | 30 | #define FIMC_LITE_MAX_DEVS 3 |
2b511edb | 31 | #define FLITE_REQ_BUFS_MIN 2 |
a055d970 SN |
32 | #define FLITE_DEFAULT_WIDTH 640 |
33 | #define FLITE_DEFAULT_HEIGHT 480 | |
2b511edb SN |
34 | |
35 | /* Bit index definitions for struct fimc_lite::state */ | |
36 | enum { | |
37 | ST_FLITE_LPM, | |
38 | ST_FLITE_PENDING, | |
39 | ST_FLITE_RUN, | |
40 | ST_FLITE_STREAM, | |
41 | ST_FLITE_SUSPENDED, | |
42 | ST_FLITE_OFF, | |
43 | ST_FLITE_IN_USE, | |
44 | ST_FLITE_CONFIG, | |
45 | ST_SENSOR_STREAM, | |
46 | }; | |
47 | ||
48 | #define FLITE_SD_PAD_SINK 0 | |
6319d6a0 SN |
49 | #define FLITE_SD_PAD_SOURCE_DMA 1 |
50 | #define FLITE_SD_PAD_SOURCE_ISP 2 | |
51 | #define FLITE_SD_PADS_NUM 3 | |
2b511edb | 52 | |
086eca29 SN |
53 | /** |
54 | * struct flite_drvdata - FIMC-LITE IP variant data structure | |
55 | * @max_width: maximum camera interface input width in pixels | |
56 | * @max_height: maximum camera interface input height in pixels | |
57 | * @out_width_align: minimum output width alignment in pixels | |
58 | * @win_hor_offs_align: minimum camera interface crop window horizontal | |
59 | * offset alignment in pixels | |
60 | * @out_hor_offs_align: minimum output DMA compose rectangle horizontal | |
61 | * offset alignment in pixels | |
62 | * @max_dma_bufs: number of output DMA buffer start address registers | |
63 | * @num_instances: total number of FIMC-LITE IP instances available | |
64 | */ | |
9c8399c8 | 65 | struct flite_drvdata { |
2b511edb SN |
66 | unsigned short max_width; |
67 | unsigned short max_height; | |
68 | unsigned short out_width_align; | |
69 | unsigned short win_hor_offs_align; | |
70 | unsigned short out_hor_offs_align; | |
086eca29 SN |
71 | unsigned short max_dma_bufs; |
72 | unsigned short num_instances; | |
2b511edb SN |
73 | }; |
74 | ||
2b511edb SN |
75 | struct fimc_lite_events { |
76 | unsigned int data_overflow; | |
77 | }; | |
78 | ||
79 | #define FLITE_MAX_PLANES 1 | |
80 | ||
81 | /** | |
82 | * struct flite_frame - source/target frame properties | |
83 | * @f_width: full pixel width | |
84 | * @f_height: full pixel height | |
85 | * @rect: crop/composition rectangle | |
e90ad659 | 86 | * @fmt: pointer to pixel format description data structure |
2b511edb SN |
87 | */ |
88 | struct flite_frame { | |
89 | u16 f_width; | |
90 | u16 f_height; | |
91 | struct v4l2_rect rect; | |
e90ad659 | 92 | const struct fimc_fmt *fmt; |
2b511edb SN |
93 | }; |
94 | ||
95 | /** | |
96 | * struct flite_buffer - video buffer structure | |
97 | * @vb: vb2 buffer | |
98 | * @list: list head for the buffers queue | |
086eca29 SN |
99 | * @paddr: DMA buffer start address |
100 | * @index: DMA start address register's index | |
2b511edb SN |
101 | */ |
102 | struct flite_buffer { | |
103 | struct vb2_buffer vb; | |
104 | struct list_head list; | |
105 | dma_addr_t paddr; | |
086eca29 | 106 | unsigned short index; |
2b511edb SN |
107 | }; |
108 | ||
109 | /** | |
110 | * struct fimc_lite - fimc lite structure | |
111 | * @pdev: pointer to FIMC-LITE platform device | |
9c8399c8 | 112 | * @dd: SoC specific driver data structure |
bc7584b0 | 113 | * @ve: exynos video device entity structure |
2b511edb | 114 | * @v4l2_dev: pointer to top the level v4l2_device |
2b511edb SN |
115 | * @fh: v4l2 file handle |
116 | * @alloc_ctx: videobuf2 memory allocator context | |
117 | * @subdev: FIMC-LITE subdev | |
118 | * @vd_pad: media (sink) pad for the capture video node | |
119 | * @subdev_pads: the subdev media pads | |
6319d6a0 | 120 | * @sensor: sensor subdev attached to FIMC-LITE directly or through MIPI-CSIS |
2b511edb SN |
121 | * @ctrl_handler: v4l2 control handler |
122 | * @test_pattern: test pattern controls | |
123 | * @index: FIMC-LITE platform device index | |
124 | * @pipeline: video capture pipeline data structure | |
b9ee31e6 | 125 | * @pipeline_ops: media pipeline ops for the video node driver |
2b511edb SN |
126 | * @slock: spinlock protecting this data structure and the hw registers |
127 | * @lock: mutex serializing video device and the subdev operations | |
128 | * @clock: FIMC-LITE gate clock | |
129 | * @regs: memory mapped io registers | |
130 | * @irq_queue: interrupt handler waitqueue | |
2b511edb SN |
131 | * @payload: image size in bytes (w x h x bpp) |
132 | * @inp_frame: camera input frame structure | |
133 | * @out_frame: DMA output frame structure | |
134 | * @out_path: output data path (DMA or FIFO) | |
135 | * @source_subdev_grp_id: source subdev group id | |
136 | * @state: driver state flags | |
137 | * @pending_buf_q: pending buffers queue head | |
138 | * @active_buf_q: the queue head of buffers scheduled in hardware | |
139 | * @vb_queue: vb2 buffers queue | |
086eca29 | 140 | * @buf_index: helps to keep track of the DMA start address register index |
2b511edb SN |
141 | * @active_buf_count: number of video buffers scheduled in hardware |
142 | * @frame_count: the captured frames counter | |
143 | * @reqbufs_count: the number of buffers requested with REQBUFS ioctl | |
2b511edb SN |
144 | */ |
145 | struct fimc_lite { | |
146 | struct platform_device *pdev; | |
9c8399c8 | 147 | struct flite_drvdata *dd; |
bc7584b0 | 148 | struct exynos_video_entity ve; |
2b511edb | 149 | struct v4l2_device *v4l2_dev; |
2b511edb SN |
150 | struct v4l2_fh fh; |
151 | struct vb2_alloc_ctx *alloc_ctx; | |
152 | struct v4l2_subdev subdev; | |
153 | struct media_pad vd_pad; | |
154 | struct media_pad subdev_pads[FLITE_SD_PADS_NUM]; | |
6319d6a0 | 155 | struct v4l2_subdev *sensor; |
2b511edb SN |
156 | struct v4l2_ctrl_handler ctrl_handler; |
157 | struct v4l2_ctrl *test_pattern; | |
068b16b6 | 158 | int index; |
2b511edb SN |
159 | |
160 | struct mutex lock; | |
161 | spinlock_t slock; | |
162 | ||
163 | struct clk *clock; | |
164 | void __iomem *regs; | |
165 | wait_queue_head_t irq_queue; | |
166 | ||
2b511edb SN |
167 | unsigned long payload[FLITE_MAX_PLANES]; |
168 | struct flite_frame inp_frame; | |
169 | struct flite_frame out_frame; | |
03878bb4 | 170 | atomic_t out_path; |
2b511edb SN |
171 | unsigned int source_subdev_grp_id; |
172 | ||
173 | unsigned long state; | |
174 | struct list_head pending_buf_q; | |
175 | struct list_head active_buf_q; | |
176 | struct vb2_queue vb_queue; | |
086eca29 | 177 | unsigned short buf_index; |
2b511edb SN |
178 | unsigned int frame_count; |
179 | unsigned int reqbufs_count; | |
2b511edb SN |
180 | |
181 | struct fimc_lite_events events; | |
9ea89e2b | 182 | bool streaming; |
2b511edb SN |
183 | }; |
184 | ||
185 | static inline bool fimc_lite_active(struct fimc_lite *fimc) | |
186 | { | |
187 | unsigned long flags; | |
188 | bool ret; | |
189 | ||
190 | spin_lock_irqsave(&fimc->slock, flags); | |
191 | ret = fimc->state & (1 << ST_FLITE_RUN) || | |
192 | fimc->state & (1 << ST_FLITE_PENDING); | |
193 | spin_unlock_irqrestore(&fimc->slock, flags); | |
194 | return ret; | |
195 | } | |
196 | ||
197 | static inline void fimc_lite_active_queue_add(struct fimc_lite *dev, | |
198 | struct flite_buffer *buf) | |
199 | { | |
200 | list_add_tail(&buf->list, &dev->active_buf_q); | |
201 | } | |
202 | ||
203 | static inline struct flite_buffer *fimc_lite_active_queue_pop( | |
204 | struct fimc_lite *dev) | |
205 | { | |
206 | struct flite_buffer *buf = list_entry(dev->active_buf_q.next, | |
207 | struct flite_buffer, list); | |
208 | list_del(&buf->list); | |
209 | return buf; | |
210 | } | |
211 | ||
212 | static inline void fimc_lite_pending_queue_add(struct fimc_lite *dev, | |
213 | struct flite_buffer *buf) | |
214 | { | |
215 | list_add_tail(&buf->list, &dev->pending_buf_q); | |
216 | } | |
217 | ||
218 | static inline struct flite_buffer *fimc_lite_pending_queue_pop( | |
219 | struct fimc_lite *dev) | |
220 | { | |
221 | struct flite_buffer *buf = list_entry(dev->pending_buf_q.next, | |
222 | struct flite_buffer, list); | |
223 | list_del(&buf->list); | |
224 | return buf; | |
225 | } | |
226 | ||
227 | #endif /* FIMC_LITE_H_ */ |