1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
|
/*
* tw68 driver common header file
*
* Much of this code is derived from the cx88 and sa7134 drivers, which
* were in turn derived from the bt87x driver. The original work was by
* Gerd Knorr; more recently the code was enhanced by Mauro Carvalho Chehab,
* Hans Verkuil, Andy Walls and many others. Their work is gratefully
* acknowledged. Full credit goes to them - any problems within this code
* are mine.
*
* Copyright (C) 2009 William M. Brack
*
* Refactored and updated to the latest v4l core frameworks:
*
* Copyright (C) 2014 Hans Verkuil <hverkuil@xs4all.nl>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/version.h>
#include <linux/pci.h>
#include <linux/videodev2.h>
#include <linux/notifier.h>
#include <linux/delay.h>
#include <linux/mutex.h>
#include <linux/io.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
#include <media/v4l2-ctrls.h>
#include <media/v4l2-device.h>
#include <media/videobuf2-dma-sg.h>
#include "tw68-reg.h"
#define UNSET (-1U)
/* system vendor and device ID's */
#define PCI_VENDOR_ID_TECHWELL 0x1797
#define PCI_DEVICE_ID_6800 0x6800
#define PCI_DEVICE_ID_6801 0x6801
#define PCI_DEVICE_ID_AUDIO2 0x6802
#define PCI_DEVICE_ID_TS3 0x6803
#define PCI_DEVICE_ID_6804 0x6804
#define PCI_DEVICE_ID_AUDIO5 0x6805
#define PCI_DEVICE_ID_TS6 0x6806
/* tw6816 based cards */
#define PCI_DEVICE_ID_6816_1 0x6810
#define PCI_DEVICE_ID_6816_2 0x6811
#define PCI_DEVICE_ID_6816_3 0x6812
#define PCI_DEVICE_ID_6816_4 0x6813
#define TW68_NORMS ( \
V4L2_STD_NTSC | V4L2_STD_PAL | V4L2_STD_SECAM | \
V4L2_STD_PAL_M | V4L2_STD_PAL_Nc | V4L2_STD_PAL_60)
#define TW68_VID_INTS (TW68_FFERR | TW68_PABORT | TW68_DMAPERR | \
TW68_FFOF | TW68_DMAPI)
/* TW6800 chips have trouble with these, so we don't set them for that chip */
#define TW68_VID_INTSX (TW68_FDMIS | TW68_HLOCK | TW68_VLOCK)
#define TW68_I2C_INTS (TW68_SBERR | TW68_SBDONE | TW68_SBERR2 | \
TW68_SBDONE2)
enum tw68_decoder_type {
TW6800,
TW6801,
TW6804,
TWXXXX,
};
/* ----------------------------------------------------------- */
/* static data */
struct tw68_tvnorm {
char *name;
v4l2_std_id id;
/* video decoder */
u32 sync_control;
u32 luma_control;
u32 chroma_ctrl1;
u32 chroma_gain;
u32 chroma_ctrl2;
u32 vgate_misc;
/* video scaler */
u32 h_delay;
u32 h_delay0; /* for TW6800 */
u32 h_start;
u32 h_stop;
u32 v_delay;
u32 video_v_start;
u32 video_v_stop;
u32 vbi_v_start_0;
u32 vbi_v_stop_0;
u32 vbi_v_start_1;
/* Techwell specific */
u32 format;
};
struct tw68_format {
char *name;
u32 fourcc;
u32 depth;
u32 twformat;
};
/* ----------------------------------------------------------- */
/* card configuration */
#define TW68_BOARD_NOAUTO UNSET
#define TW68_BOARD_UNKNOWN 0
#define TW68_BOARD_GENERIC_6802 1
#define TW68_MAXBOARDS 16
#define TW68_INPUT_MAX 4
/* ----------------------------------------------------------- */
/* device / file handle status */
#define BUFFER_TIMEOUT msecs_to_jiffies(500) /* 0.5 seconds */
struct tw68_dev; /* forward delclaration */
/* buffer for one video/vbi/ts frame */
struct tw68_buf {
struct vb2_buffer vb;
struct list_head list;
unsigned int size;
__le32 *cpu;
__le32 *jmp;
dma_addr_t dma;
};
struct tw68_fmt {
char *name;
u32 fourcc; /* v4l2 format id */
int depth;
int flags;
u32 twformat;
};
/* global device status */
struct tw68_dev {
struct mutex lock;
spinlock_t slock;
u16 instance;
struct v4l2_device v4l2_dev;
/* various device info */
enum tw68_decoder_type vdecoder;
struct video_device vdev;
struct v4l2_ctrl_handler hdl;
/* pci i/o */
char *name;
struct pci_dev *pci;
unsigned char pci_rev, pci_lat;
u32 __iomem *lmmio;
u8 __iomem *bmmio;
u32 pci_irqmask;
/* The irq mask to be used will depend upon the chip type */
u32 board_virqmask;
/* video capture */
const struct tw68_format *fmt;
unsigned width, height;
unsigned seqnr;
unsigned field;
struct vb2_queue vidq;
struct list_head active;
void *alloc_ctx;
/* various v4l controls */
const struct tw68_tvnorm *tvnorm; /* video */
int input;
};
/* ----------------------------------------------------------- */
#define tw_readl(reg) readl(dev->lmmio + ((reg) >> 2))
#define tw_readb(reg) readb(dev->bmmio + (reg))
#define tw_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2))
#define tw_writeb(reg, value) writeb((value), dev->bmmio + (reg))
#define tw_andorl(reg, mask, value) \
writel((readl(dev->lmmio+((reg)>>2)) & ~(mask)) |\
((value) & (mask)), dev->lmmio+((reg)>>2))
#define tw_andorb(reg, mask, value) \
writeb((readb(dev->bmmio + (reg)) & ~(mask)) |\
((value) & (mask)), dev->bmmio+(reg))
#define tw_setl(reg, bit) tw_andorl((reg), (bit), (bit))
#define tw_setb(reg, bit) tw_andorb((reg), (bit), (bit))
#define tw_clearl(reg, bit) \
writel((readl(dev->lmmio + ((reg) >> 2)) & ~(bit)), \
dev->lmmio + ((reg) >> 2))
#define tw_clearb(reg, bit) \
writeb((readb(dev->bmmio+(reg)) & ~(bit)), \
dev->bmmio + (reg))
#define tw_wait(us) { udelay(us); }
/* ----------------------------------------------------------- */
/* tw68-video.c */
void tw68_set_tvnorm_hw(struct tw68_dev *dev);
int tw68_video_init1(struct tw68_dev *dev);
int tw68_video_init2(struct tw68_dev *dev, int video_nr);
void tw68_irq_video_done(struct tw68_dev *dev, unsigned long status);
int tw68_video_start_dma(struct tw68_dev *dev, struct tw68_buf *buf);
/* ----------------------------------------------------------- */
/* tw68-risc.c */
int tw68_risc_buffer(struct pci_dev *pci, struct tw68_buf *buf,
struct scatterlist *sglist, unsigned int top_offset,
unsigned int bottom_offset, unsigned int bpl,
unsigned int padding, unsigned int lines);
|
