Gitiles
Code Review Sign In
gerrit-public.fairphone.software / kernel / msm-4.19 / 704a84ccdbf19fdce9adfda0b936dfdcac52fa49 / . / drivers / media / pci / tw686x / tw686x.h
blob: 44b5755acf02b545b3ba2b025ee779f0cafd4aaf [file] [log] [blame]
Ezequiel Garcia704a84c2016-03-02 11:30:16 -0300[diff] [blame^]1/*
2 * Copyright (C) 2015 VanguardiaSur - www.vanguardiasur.com.ar
3 *
4 * Copyright (C) 2015 Industrial Research Institute for Automation
5 * and Measurements PIAP
6 * Written by Krzysztof Ha?asa
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License
10 * as published by the Free Software Foundation.
11 */
12
13#include <linux/mutex.h>
14#include <linux/pci.h>
15#include <linux/timer.h>
16#include <linux/videodev2.h>
17#include <media/v4l2-common.h>
18#include <media/v4l2-ctrls.h>
19#include <media/v4l2-device.h>
20#include <media/v4l2-ioctl.h>
21#include <media/videobuf2-v4l2.h>
22#include <sound/pcm.h>
23
24#include "tw686x-regs.h"
25
26#define TYPE_MAX_CHANNELS 0x0f
27#define TYPE_SECOND_GEN 0x10
28#define TW686X_DEF_PHASE_REF 0x1518
29
30#define TW686X_FIELD_MODE 0x3
31#define TW686X_FRAME_MODE 0x2
32/* 0x1 is reserved */
33#define TW686X_SG_MODE 0x0
34
35#define TW686X_AUDIO_PAGE_SZ 4096
36#define TW686X_AUDIO_PAGE_MAX 16
37#define TW686X_AUDIO_PERIODS_MIN 2
38#define TW686X_AUDIO_PERIODS_MAX TW686X_AUDIO_PAGE_MAX
39
40struct tw686x_format {
41 char *name;
42 unsigned int fourcc;
43 unsigned int depth;
44 unsigned int mode;
45};
46
47struct tw686x_dma_desc {
48 dma_addr_t phys;
49 void *virt;
50 unsigned int size;
51};
52
53struct tw686x_audio_buf {
54 dma_addr_t dma;
55 void *virt;
56 struct list_head list;
57};
58
59struct tw686x_v4l2_buf {
60 struct vb2_v4l2_buffer vb;
61 struct list_head list;
62};
63
64struct tw686x_audio_channel {
65 struct tw686x_dev *dev;
66 struct snd_pcm_substream *ss;
67 unsigned int ch;
68 struct tw686x_audio_buf *curr_bufs[2];
69 struct tw686x_dma_desc dma_descs[2];
70 dma_addr_t ptr;
71
72 struct tw686x_audio_buf buf[TW686X_AUDIO_PAGE_MAX];
73 struct list_head buf_list;
74 spinlock_t lock;
75};
76
77struct tw686x_video_channel {
78 struct tw686x_dev *dev;
79
80 struct vb2_queue vidq;
81 struct list_head vidq_queued;
82 struct video_device *device;
83 struct tw686x_v4l2_buf *curr_bufs[2];
84 struct tw686x_dma_desc dma_descs[2];
85
86 struct v4l2_ctrl_handler ctrl_handler;
87 const struct tw686x_format *format;
88 struct mutex vb_mutex;
89 spinlock_t qlock;
90 v4l2_std_id video_standard;
91 unsigned int width, height;
92 unsigned int h_halve, v_halve;
93 unsigned int ch;
94 unsigned int num;
95 unsigned int fps;
96 unsigned int input;
97 unsigned int sequence;
98 unsigned int pb;
99 bool no_signal;
100};
101
102/**
103 * struct tw686x_dev - global device status
104 * @lock: spinlock controlling access to the
105 * shared device registers (DMA enable/disable).
106 */
107struct tw686x_dev {
108 spinlock_t lock;
109
110 struct v4l2_device v4l2_dev;
111 struct snd_card *snd_card;
112
113 char name[32];
114 unsigned int type;
115 struct pci_dev *pci_dev;
116 __u32 __iomem *mmio;
117
118 void *alloc_ctx;
119
120 struct tw686x_video_channel *video_channels;
121 struct tw686x_audio_channel *audio_channels;
122
123 int audio_rate; /* per-device value */
124
125 struct timer_list dma_delay_timer;
126 u32 pending_dma_en; /* must be protected by lock */
127 u32 pending_dma_cmd; /* must be protected by lock */
128};
129
130static inline uint32_t reg_read(struct tw686x_dev *dev, unsigned int reg)
131{
132 return readl(dev->mmio + reg);
133}
134
135static inline void reg_write(struct tw686x_dev *dev, unsigned int reg,
136 uint32_t value)
137{
138 writel(value, dev->mmio + reg);
139}
140
141static inline unsigned int max_channels(struct tw686x_dev *dev)
142{
143 return dev->type & TYPE_MAX_CHANNELS; /* 4 or 8 channels */
144}
145
146void tw686x_enable_channel(struct tw686x_dev *dev, unsigned int channel);
147void tw686x_disable_channel(struct tw686x_dev *dev, unsigned int channel);
148
149int tw686x_video_init(struct tw686x_dev *dev);
150void tw686x_video_free(struct tw686x_dev *dev);
151void tw686x_video_irq(struct tw686x_dev *dev, unsigned long requests,
152 unsigned int pb_status, unsigned int fifo_status,
153 unsigned int *reset_ch);
154
155int tw686x_audio_init(struct tw686x_dev *dev);
156void tw686x_audio_free(struct tw686x_dev *dev);
157void tw686x_audio_irq(struct tw686x_dev *dev, unsigned long requests,
158 unsigned int pb_status);