packaging: release out (3.8.3)
[profile/ivi/kernel-adaptation-intel-automotive.git] / drivers / media / platform / s5p-fimc / fimc-lite.h
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 <linux/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
111  * @pipeline_ops: media pipeline ops for the video node driver
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;
136         struct video_device     vfd;
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;
146         const struct fimc_pipeline_ops *pipeline_ops;
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_ */