blob: 44424eee81d89b63278f7ded8382d7a62b47241e [file] [log] [blame]
Sylwester Nawrocki2b511ed2012-04-20 19:43:14 -03001/*
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 */
35enum {
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
51struct 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
59struct 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
66struct 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 */
78struct 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 */
90struct 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
111 * @slock: spinlock protecting this data structure and the hw registers
112 * @lock: mutex serializing video device and the subdev operations
113 * @clock: FIMC-LITE gate clock
114 * @regs: memory mapped io registers
115 * @irq_queue: interrupt handler waitqueue
116 * @fmt: pointer to color format description structure
117 * @payload: image size in bytes (w x h x bpp)
118 * @inp_frame: camera input frame structure
119 * @out_frame: DMA output frame structure
120 * @out_path: output data path (DMA or FIFO)
121 * @source_subdev_grp_id: source subdev group id
122 * @state: driver state flags
123 * @pending_buf_q: pending buffers queue head
124 * @active_buf_q: the queue head of buffers scheduled in hardware
125 * @vb_queue: vb2 buffers queue
126 * @active_buf_count: number of video buffers scheduled in hardware
127 * @frame_count: the captured frames counter
128 * @reqbufs_count: the number of buffers requested with REQBUFS ioctl
129 * @ref_count: driver's private reference counter
130 */
131struct fimc_lite {
132 struct platform_device *pdev;
133 struct flite_variant *variant;
134 struct v4l2_device *v4l2_dev;
135 struct video_device *vfd;
136 struct v4l2_fh fh;
137 struct vb2_alloc_ctx *alloc_ctx;
138 struct v4l2_subdev subdev;
139 struct media_pad vd_pad;
140 struct media_pad subdev_pads[FLITE_SD_PADS_NUM];
141 struct v4l2_ctrl_handler ctrl_handler;
142 struct v4l2_ctrl *test_pattern;
143 u32 index;
144 struct fimc_pipeline pipeline;
145
146 struct mutex lock;
147 spinlock_t slock;
148
149 struct clk *clock;
150 void __iomem *regs;
151 wait_queue_head_t irq_queue;
152
153 const struct fimc_fmt *fmt;
154 unsigned long payload[FLITE_MAX_PLANES];
155 struct flite_frame inp_frame;
156 struct flite_frame out_frame;
157 enum fimc_datapath out_path;
158 unsigned int source_subdev_grp_id;
159
160 unsigned long state;
161 struct list_head pending_buf_q;
162 struct list_head active_buf_q;
163 struct vb2_queue vb_queue;
164 unsigned int frame_count;
165 unsigned int reqbufs_count;
166 int ref_count;
167
168 struct fimc_lite_events events;
169};
170
171static inline bool fimc_lite_active(struct fimc_lite *fimc)
172{
173 unsigned long flags;
174 bool ret;
175
176 spin_lock_irqsave(&fimc->slock, flags);
177 ret = fimc->state & (1 << ST_FLITE_RUN) ||
178 fimc->state & (1 << ST_FLITE_PENDING);
179 spin_unlock_irqrestore(&fimc->slock, flags);
180 return ret;
181}
182
183static inline void fimc_lite_active_queue_add(struct fimc_lite *dev,
184 struct flite_buffer *buf)
185{
186 list_add_tail(&buf->list, &dev->active_buf_q);
187}
188
189static inline struct flite_buffer *fimc_lite_active_queue_pop(
190 struct fimc_lite *dev)
191{
192 struct flite_buffer *buf = list_entry(dev->active_buf_q.next,
193 struct flite_buffer, list);
194 list_del(&buf->list);
195 return buf;
196}
197
198static inline void fimc_lite_pending_queue_add(struct fimc_lite *dev,
199 struct flite_buffer *buf)
200{
201 list_add_tail(&buf->list, &dev->pending_buf_q);
202}
203
204static inline struct flite_buffer *fimc_lite_pending_queue_pop(
205 struct fimc_lite *dev)
206{
207 struct flite_buffer *buf = list_entry(dev->pending_buf_q.next,
208 struct flite_buffer, list);
209 list_del(&buf->list);
210 return buf;
211}
212
213#endif /* FIMC_LITE_H_ */