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
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
|
/*
* adv7170 - adv7170, adv7171 video encoder driver version 0.0.1
*
* Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com>
*
* Based on adv7176 driver by:
*
* Copyright (C) 1998 Dave Perks <dperks@ibm.net>
* Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
* - some corrections for Pinnacle Systems Inc. DC10plus card.
*
* Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
* - moved over to linux>=2.4.x i2c protocol (1/1/2003)
*
* 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.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/ioctl.h>
#include <asm/uaccess.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver");
MODULE_AUTHOR("Maxim Yevtyushkin");
MODULE_LICENSE("GPL");
static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
/* ----------------------------------------------------------------------- */
struct adv7170 {
struct v4l2_subdev sd;
unsigned char reg[128];
v4l2_std_id norm;
int input;
};
static inline struct adv7170 *to_adv7170(struct v4l2_subdev *sd)
{
return container_of(sd, struct adv7170, sd);
}
static char *inputs[] = { "pass_through", "play_back" };
static u32 adv7170_codes[] = {
MEDIA_BUS_FMT_UYVY8_2X8,
MEDIA_BUS_FMT_UYVY8_1X16,
};
/* ----------------------------------------------------------------------- */
static inline int adv7170_write(struct v4l2_subdev *sd, u8 reg, u8 value)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct adv7170 *encoder = to_adv7170(sd);
encoder->reg[reg] = value;
return i2c_smbus_write_byte_data(client, reg, value);
}
static inline int adv7170_read(struct v4l2_subdev *sd, u8 reg)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
return i2c_smbus_read_byte_data(client, reg);
}
static int adv7170_write_block(struct v4l2_subdev *sd,
const u8 *data, unsigned int len)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct adv7170 *encoder = to_adv7170(sd);
int ret = -1;
u8 reg;
/* the adv7170 has an autoincrement function, use it if
* the adapter understands raw I2C */
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
/* do raw I2C, not smbus compatible */
u8 block_data[32];
int block_len;
while (len >= 2) {
block_len = 0;
block_data[block_len++] = reg = data[0];
do {
block_data[block_len++] =
encoder->reg[reg++] = data[1];
len -= 2;
data += 2;
} while (len >= 2 && data[0] == reg && block_len < 32);
ret = i2c_master_send(client, block_data, block_len);
if (ret < 0)
break;
}
} else {
/* do some slow I2C emulation kind of thing */
while (len >= 2) {
reg = *data++;
ret = adv7170_write(sd, reg, *data++);
if (ret < 0)
break;
len -= 2;
}
}
return ret;
}
/* ----------------------------------------------------------------------- */
#define TR0MODE 0x4c
#define TR0RST 0x80
#define TR1CAPT 0x00
#define TR1PLAY 0x00
static const unsigned char init_NTSC[] = {
0x00, 0x10, /* MR0 */
0x01, 0x20, /* MR1 */
0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */
0x03, 0x80, /* MR3 */
0x04, 0x30, /* MR4 */
0x05, 0x00, /* Reserved */
0x06, 0x00, /* Reserved */
0x07, TR0MODE, /* TM0 */
0x08, TR1CAPT, /* TM1 */
0x09, 0x16, /* Fsc0 */
0x0a, 0x7c, /* Fsc1 */
0x0b, 0xf0, /* Fsc2 */
0x0c, 0x21, /* Fsc3 */
0x0d, 0x00, /* Subcarrier Phase */
0x0e, 0x00, /* Closed Capt. Ext 0 */
0x0f, 0x00, /* Closed Capt. Ext 1 */
0x10, 0x00, /* Closed Capt. 0 */
0x11, 0x00, /* Closed Capt. 1 */
0x12, 0x00, /* Pedestal Ctl 0 */
0x13, 0x00, /* Pedestal Ctl 1 */
0x14, 0x00, /* Pedestal Ctl 2 */
0x15, 0x00, /* Pedestal Ctl 3 */
0x16, 0x00, /* CGMS_WSS_0 */
0x17, 0x00, /* CGMS_WSS_1 */
0x18, 0x00, /* CGMS_WSS_2 */
0x19, 0x00, /* Teletext Ctl */
};
static const unsigned char init_PAL[] = {
0x00, 0x71, /* MR0 */
0x01, 0x20, /* MR1 */
0x02, 0x0e, /* MR2 RTC control: bits 2 and 1 */
0x03, 0x80, /* MR3 */
0x04, 0x30, /* MR4 */
0x05, 0x00, /* Reserved */
0x06, 0x00, /* Reserved */
0x07, TR0MODE, /* TM0 */
0x08, TR1CAPT, /* TM1 */
0x09, 0xcb, /* Fsc0 */
0x0a, 0x8a, /* Fsc1 */
0x0b, 0x09, /* Fsc2 */
0x0c, 0x2a, /* Fsc3 */
0x0d, 0x00, /* Subcarrier Phase */
0x0e, 0x00, /* Closed Capt. Ext 0 */
0x0f, 0x00, /* Closed Capt. Ext 1 */
0x10, 0x00, /* Closed Capt. 0 */
0x11, 0x00, /* Closed Capt. 1 */
0x12, 0x00, /* Pedestal Ctl 0 */
0x13, 0x00, /* Pedestal Ctl 1 */
0x14, 0x00, /* Pedestal Ctl 2 */
0x15, 0x00, /* Pedestal Ctl 3 */
0x16, 0x00, /* CGMS_WSS_0 */
0x17, 0x00, /* CGMS_WSS_1 */
0x18, 0x00, /* CGMS_WSS_2 */
0x19, 0x00, /* Teletext Ctl */
};
static int adv7170_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct adv7170 *encoder = to_adv7170(sd);
v4l2_dbg(1, debug, sd, "set norm %llx\n", (unsigned long long)std);
if (std & V4L2_STD_NTSC) {
adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC));
if (encoder->input == 0)
adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */
adv7170_write(sd, 0x07, TR0MODE | TR0RST);
adv7170_write(sd, 0x07, TR0MODE);
} else if (std & V4L2_STD_PAL) {
adv7170_write_block(sd, init_PAL, sizeof(init_PAL));
if (encoder->input == 0)
adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */
adv7170_write(sd, 0x07, TR0MODE | TR0RST);
adv7170_write(sd, 0x07, TR0MODE);
} else {
v4l2_dbg(1, debug, sd, "illegal norm: %llx\n",
(unsigned long long)std);
return -EINVAL;
}
v4l2_dbg(1, debug, sd, "switched to %llx\n", (unsigned long long)std);
encoder->norm = std;
return 0;
}
static int adv7170_s_routing(struct v4l2_subdev *sd,
u32 input, u32 output, u32 config)
{
struct adv7170 *encoder = to_adv7170(sd);
/* RJ: input = 0: input is from decoder
input = 1: input is from ZR36060
input = 2: color bar */
v4l2_dbg(1, debug, sd, "set input from %s\n",
input == 0 ? "decoder" : "ZR36060");
switch (input) {
case 0:
adv7170_write(sd, 0x01, 0x20);
adv7170_write(sd, 0x08, TR1CAPT); /* TR1 */
adv7170_write(sd, 0x02, 0x0e); /* Enable genlock */
adv7170_write(sd, 0x07, TR0MODE | TR0RST);
adv7170_write(sd, 0x07, TR0MODE);
/* udelay(10); */
break;
case 1:
adv7170_write(sd, 0x01, 0x00);
adv7170_write(sd, 0x08, TR1PLAY); /* TR1 */
adv7170_write(sd, 0x02, 0x08);
adv7170_write(sd, 0x07, TR0MODE | TR0RST);
adv7170_write(sd, 0x07, TR0MODE);
/* udelay(10); */
break;
default:
v4l2_dbg(1, debug, sd, "illegal input: %d\n", input);
return -EINVAL;
}
v4l2_dbg(1, debug, sd, "switched to %s\n", inputs[input]);
encoder->input = input;
return 0;
}
static int adv7170_enum_mbus_code(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_mbus_code_enum *code)
{
if (code->pad || code->index >= ARRAY_SIZE(adv7170_codes))
return -EINVAL;
code->code = adv7170_codes[code->index];
return 0;
}
static int adv7170_get_fmt(struct v4l2_subdev *sd,
struct v4l2_subdev_pad_config *cfg,
struct v4l2_subdev_format *format)
{
struct v4l2_mbus_framefmt *mf = &format->format;
u8 val = adv7170_read(sd, 0x7);
if (format->pad)
return -EINVAL;
if ((val & 0x40) == (1 << 6))
mf->code = MEDIA_BUS_FMT_UYVY8_1X16;
else
mf->code = MEDIA_BUS_FMT_UYVY8_2X8;
mf->colorspace = V4L2_COLORSPACE_SMPTE170M;
mf->width = 0;
mf->height = 0;
mf->field = V4L2_FIELD_ANY;
return 0;
}
static int adv7170_s_fmt(struct v4l2_subdev *sd,
struct v4l2_mbus_framefmt *mf)
{
u8 val = adv7170_read(sd, 0x7);
int ret;
switch (mf->code) {
case MEDIA_BUS_FMT_UYVY8_2X8:
val &= ~0x40;
break;
case MEDIA_BUS_FMT_UYVY8_1X16:
val |= 0x40;
break;
default:
v4l2_dbg(1, debug, sd,
"illegal v4l2_mbus_framefmt code: %d\n", mf->code);
return -EINVAL;
}
ret = adv7170_write(sd, 0x7, val);
return ret;
}
/* ----------------------------------------------------------------------- */
static const struct v4l2_subdev_video_ops adv7170_video_ops = {
.s_std_output = adv7170_s_std_output,
.s_routing = adv7170_s_routing,
.s_mbus_fmt = adv7170_s_fmt,
};
static const struct v4l2_subdev_pad_ops adv7170_pad_ops = {
.enum_mbus_code = adv7170_enum_mbus_code,
.get_fmt = adv7170_get_fmt,
};
static const struct v4l2_subdev_ops adv7170_ops = {
.video = &adv7170_video_ops,
.pad = &adv7170_pad_ops,
};
/* ----------------------------------------------------------------------- */
static int adv7170_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct adv7170 *encoder;
struct v4l2_subdev *sd;
int i;
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
encoder = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL);
if (encoder == NULL)
return -ENOMEM;
sd = &encoder->sd;
v4l2_i2c_subdev_init(sd, client, &adv7170_ops);
encoder->norm = V4L2_STD_NTSC;
encoder->input = 0;
i = adv7170_write_block(sd, init_NTSC, sizeof(init_NTSC));
if (i >= 0) {
i = adv7170_write(sd, 0x07, TR0MODE | TR0RST);
i = adv7170_write(sd, 0x07, TR0MODE);
i = adv7170_read(sd, 0x12);
v4l2_dbg(1, debug, sd, "revision %d\n", i & 1);
}
if (i < 0)
v4l2_dbg(1, debug, sd, "init error 0x%x\n", i);
return 0;
}
static int adv7170_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
v4l2_device_unregister_subdev(sd);
return 0;
}
/* ----------------------------------------------------------------------- */
static const struct i2c_device_id adv7170_id[] = {
{ "adv7170", 0 },
{ "adv7171", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, adv7170_id);
static struct i2c_driver adv7170_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "adv7170",
},
.probe = adv7170_probe,
.remove = adv7170_remove,
.id_table = adv7170_id,
};
module_i2c_driver(adv7170_driver);
|
