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
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
|
/*
* Panasonic MN88473 DVB-T/T2/C demodulator driver
*
* Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
*
* 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 "mn88473_priv.h"
static int mn88473_get_tune_settings(struct dvb_frontend *fe,
struct dvb_frontend_tune_settings *s)
{
s->min_delay_ms = 1000;
return 0;
}
static int mn88473_set_frontend(struct dvb_frontend *fe)
{
struct i2c_client *client = fe->demodulator_priv;
struct mn88473_dev *dev = i2c_get_clientdata(client);
struct dtv_frontend_properties *c = &fe->dtv_property_cache;
int ret, i;
u32 if_frequency;
u64 tmp;
u8 delivery_system_val, if_val[3], bw_val[7];
dev_dbg(&client->dev,
"delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%d stream_id=%d\n",
c->delivery_system, c->modulation,
c->frequency, c->bandwidth_hz, c->symbol_rate,
c->inversion, c->stream_id);
if (!dev->warm) {
ret = -EAGAIN;
goto err;
}
switch (c->delivery_system) {
case SYS_DVBT:
delivery_system_val = 0x02;
break;
case SYS_DVBT2:
delivery_system_val = 0x03;
break;
case SYS_DVBC_ANNEX_A:
delivery_system_val = 0x04;
break;
default:
ret = -EINVAL;
goto err;
}
if (c->bandwidth_hz <= 6000000) {
memcpy(bw_val, "\xe9\x55\x55\x1c\x29\x1c\x29", 7);
} else if (c->bandwidth_hz <= 7000000) {
memcpy(bw_val, "\xc8\x00\x00\x17\x0a\x17\x0a", 7);
} else if (c->bandwidth_hz <= 8000000) {
memcpy(bw_val, "\xaf\x00\x00\x11\xec\x11\xec", 7);
} else {
ret = -EINVAL;
goto err;
}
/* program tuner */
if (fe->ops.tuner_ops.set_params) {
ret = fe->ops.tuner_ops.set_params(fe);
if (ret)
goto err;
}
if (fe->ops.tuner_ops.get_if_frequency) {
ret = fe->ops.tuner_ops.get_if_frequency(fe, &if_frequency);
if (ret)
goto err;
dev_dbg(&client->dev, "get_if_frequency=%d\n", if_frequency);
} else {
if_frequency = 0;
}
/* Calculate IF registers ( (1<<24)*IF / Xtal ) */
tmp = div_u64(if_frequency * (u64)(1<<24) + (dev->xtal / 2),
dev->xtal);
if_val[0] = ((tmp >> 16) & 0xff);
if_val[1] = ((tmp >> 8) & 0xff);
if_val[2] = ((tmp >> 0) & 0xff);
ret = regmap_write(dev->regmap[2], 0x05, 0x00);
ret = regmap_write(dev->regmap[2], 0xfb, 0x13);
ret = regmap_write(dev->regmap[2], 0xef, 0x13);
ret = regmap_write(dev->regmap[2], 0xf9, 0x13);
ret = regmap_write(dev->regmap[2], 0x00, 0x18);
ret = regmap_write(dev->regmap[2], 0x01, 0x01);
ret = regmap_write(dev->regmap[2], 0x02, 0x21);
ret = regmap_write(dev->regmap[2], 0x03, delivery_system_val);
ret = regmap_write(dev->regmap[2], 0x0b, 0x00);
for (i = 0; i < sizeof(if_val); i++) {
ret = regmap_write(dev->regmap[2], 0x10 + i, if_val[i]);
if (ret)
goto err;
}
for (i = 0; i < sizeof(bw_val); i++) {
ret = regmap_write(dev->regmap[2], 0x13 + i, bw_val[i]);
if (ret)
goto err;
}
ret = regmap_write(dev->regmap[2], 0x2d, 0x3b);
ret = regmap_write(dev->regmap[2], 0x2e, 0x00);
ret = regmap_write(dev->regmap[2], 0x56, 0x0d);
ret = regmap_write(dev->regmap[0], 0x01, 0xba);
ret = regmap_write(dev->regmap[0], 0x02, 0x13);
ret = regmap_write(dev->regmap[0], 0x03, 0x80);
ret = regmap_write(dev->regmap[0], 0x04, 0xba);
ret = regmap_write(dev->regmap[0], 0x05, 0x91);
ret = regmap_write(dev->regmap[0], 0x07, 0xe7);
ret = regmap_write(dev->regmap[0], 0x08, 0x28);
ret = regmap_write(dev->regmap[0], 0x0a, 0x1a);
ret = regmap_write(dev->regmap[0], 0x13, 0x1f);
ret = regmap_write(dev->regmap[0], 0x19, 0x03);
ret = regmap_write(dev->regmap[0], 0x1d, 0xb0);
ret = regmap_write(dev->regmap[0], 0x2a, 0x72);
ret = regmap_write(dev->regmap[0], 0x2d, 0x00);
ret = regmap_write(dev->regmap[0], 0x3c, 0x00);
ret = regmap_write(dev->regmap[0], 0x3f, 0xf8);
ret = regmap_write(dev->regmap[0], 0x40, 0xf4);
ret = regmap_write(dev->regmap[0], 0x41, 0x08);
ret = regmap_write(dev->regmap[0], 0xd2, 0x29);
ret = regmap_write(dev->regmap[0], 0xd4, 0x55);
ret = regmap_write(dev->regmap[1], 0x10, 0x10);
ret = regmap_write(dev->regmap[1], 0x11, 0xab);
ret = regmap_write(dev->regmap[1], 0x12, 0x0d);
ret = regmap_write(dev->regmap[1], 0x13, 0xae);
ret = regmap_write(dev->regmap[1], 0x14, 0x1d);
ret = regmap_write(dev->regmap[1], 0x15, 0x9d);
ret = regmap_write(dev->regmap[1], 0xbe, 0x08);
ret = regmap_write(dev->regmap[2], 0x09, 0x08);
ret = regmap_write(dev->regmap[2], 0x08, 0x1d);
ret = regmap_write(dev->regmap[0], 0xb2, 0x37);
ret = regmap_write(dev->regmap[0], 0xd7, 0x04);
ret = regmap_write(dev->regmap[2], 0x32, 0x80);
ret = regmap_write(dev->regmap[2], 0x36, 0x00);
ret = regmap_write(dev->regmap[2], 0xf8, 0x9f);
if (ret)
goto err;
dev->delivery_system = c->delivery_system;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int mn88473_read_status(struct dvb_frontend *fe, fe_status_t *status)
{
struct i2c_client *client = fe->demodulator_priv;
struct mn88473_dev *dev = i2c_get_clientdata(client);
int ret;
*status = 0;
if (!dev->warm) {
ret = -EAGAIN;
goto err;
}
*status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
FE_HAS_SYNC | FE_HAS_LOCK;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int mn88473_init(struct dvb_frontend *fe)
{
struct i2c_client *client = fe->demodulator_priv;
struct mn88473_dev *dev = i2c_get_clientdata(client);
int ret, len, remaining;
const struct firmware *fw = NULL;
u8 *fw_file = MN88473_FIRMWARE;
unsigned int tmp;
dev_dbg(&client->dev, "\n");
if (dev->warm)
return 0;
/* request the firmware, this will block and timeout */
ret = request_firmware(&fw, fw_file, &client->dev);
if (ret) {
dev_err(&client->dev, "firmare file '%s' not found\n", fw_file);
goto err_request_firmware;
}
dev_info(&client->dev, "downloading firmware from file '%s'\n",
fw_file);
ret = regmap_write(dev->regmap[0], 0xf5, 0x03);
if (ret)
goto err;
for (remaining = fw->size; remaining > 0;
remaining -= (dev->i2c_wr_max - 1)) {
len = remaining;
if (len > (dev->i2c_wr_max - 1))
len = (dev->i2c_wr_max - 1);
ret = regmap_bulk_write(dev->regmap[0], 0xf6,
&fw->data[fw->size - remaining], len);
if (ret) {
dev_err(&client->dev, "firmware download failed=%d\n",
ret);
goto err;
}
}
/* parity check of firmware */
ret = regmap_read(dev->regmap[0], 0xf8, &tmp);
if (ret) {
dev_err(&client->dev,
"parity reg read failed=%d\n", ret);
goto err;
}
if (tmp & 0x10) {
dev_err(&client->dev,
"firmware parity check failed=0x%x\n", tmp);
goto err;
}
dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", tmp);
ret = regmap_write(dev->regmap[0], 0xf5, 0x00);
if (ret)
goto err;
release_firmware(fw);
fw = NULL;
/* warm state */
dev->warm = true;
return 0;
err:
release_firmware(fw);
err_request_firmware:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int mn88473_sleep(struct dvb_frontend *fe)
{
struct i2c_client *client = fe->demodulator_priv;
struct mn88473_dev *dev = i2c_get_clientdata(client);
int ret;
dev_dbg(&client->dev, "\n");
ret = regmap_write(dev->regmap[2], 0x05, 0x3e);
if (ret)
goto err;
dev->delivery_system = SYS_UNDEFINED;
return 0;
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static struct dvb_frontend_ops mn88473_ops = {
.delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_AC},
.info = {
.name = "Panasonic MN88473",
.caps = FE_CAN_FEC_1_2 |
FE_CAN_FEC_2_3 |
FE_CAN_FEC_3_4 |
FE_CAN_FEC_5_6 |
FE_CAN_FEC_7_8 |
FE_CAN_FEC_AUTO |
FE_CAN_QPSK |
FE_CAN_QAM_16 |
FE_CAN_QAM_32 |
FE_CAN_QAM_64 |
FE_CAN_QAM_128 |
FE_CAN_QAM_256 |
FE_CAN_QAM_AUTO |
FE_CAN_TRANSMISSION_MODE_AUTO |
FE_CAN_GUARD_INTERVAL_AUTO |
FE_CAN_HIERARCHY_AUTO |
FE_CAN_MUTE_TS |
FE_CAN_2G_MODULATION |
FE_CAN_MULTISTREAM
},
.get_tune_settings = mn88473_get_tune_settings,
.init = mn88473_init,
.sleep = mn88473_sleep,
.set_frontend = mn88473_set_frontend,
.read_status = mn88473_read_status,
};
static int mn88473_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct mn88473_config *config = client->dev.platform_data;
struct mn88473_dev *dev;
int ret;
unsigned int utmp;
static const struct regmap_config regmap_config = {
.reg_bits = 8,
.val_bits = 8,
};
dev_dbg(&client->dev, "\n");
/* Caller really need to provide pointer for frontend we create. */
if (config->fe == NULL) {
dev_err(&client->dev, "frontend pointer not defined\n");
ret = -EINVAL;
goto err;
}
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (dev == NULL) {
ret = -ENOMEM;
goto err;
}
dev->i2c_wr_max = config->i2c_wr_max;
if (!config->xtal)
dev->xtal = 25000000;
else
dev->xtal = config->xtal;
dev->client[0] = client;
dev->regmap[0] = regmap_init_i2c(dev->client[0], ®map_config);
if (IS_ERR(dev->regmap[0])) {
ret = PTR_ERR(dev->regmap[0]);
goto err_kfree;
}
/* check demod answers to I2C */
ret = regmap_read(dev->regmap[0], 0x00, &utmp);
if (ret)
goto err_regmap_0_regmap_exit;
/*
* Chip has three I2C addresses for different register pages. Used
* addresses are 0x18, 0x1a and 0x1c. We register two dummy clients,
* 0x1a and 0x1c, in order to get own I2C client for each register page.
*/
dev->client[1] = i2c_new_dummy(client->adapter, 0x1a);
if (dev->client[1] == NULL) {
ret = -ENODEV;
dev_err(&client->dev, "I2C registration failed\n");
if (ret)
goto err_regmap_0_regmap_exit;
}
dev->regmap[1] = regmap_init_i2c(dev->client[1], ®map_config);
if (IS_ERR(dev->regmap[1])) {
ret = PTR_ERR(dev->regmap[1]);
goto err_client_1_i2c_unregister_device;
}
i2c_set_clientdata(dev->client[1], dev);
dev->client[2] = i2c_new_dummy(client->adapter, 0x1c);
if (dev->client[2] == NULL) {
ret = -ENODEV;
dev_err(&client->dev, "2nd I2C registration failed\n");
if (ret)
goto err_regmap_1_regmap_exit;
}
dev->regmap[2] = regmap_init_i2c(dev->client[2], ®map_config);
if (IS_ERR(dev->regmap[2])) {
ret = PTR_ERR(dev->regmap[2]);
goto err_client_2_i2c_unregister_device;
}
i2c_set_clientdata(dev->client[2], dev);
/* create dvb_frontend */
memcpy(&dev->fe.ops, &mn88473_ops, sizeof(struct dvb_frontend_ops));
dev->fe.demodulator_priv = client;
*config->fe = &dev->fe;
i2c_set_clientdata(client, dev);
dev_info(&dev->client[0]->dev, "Panasonic MN88473 successfully attached\n");
return 0;
err_client_2_i2c_unregister_device:
i2c_unregister_device(dev->client[2]);
err_regmap_1_regmap_exit:
regmap_exit(dev->regmap[1]);
err_client_1_i2c_unregister_device:
i2c_unregister_device(dev->client[1]);
err_regmap_0_regmap_exit:
regmap_exit(dev->regmap[0]);
err_kfree:
kfree(dev);
err:
dev_dbg(&client->dev, "failed=%d\n", ret);
return ret;
}
static int mn88473_remove(struct i2c_client *client)
{
struct mn88473_dev *dev = i2c_get_clientdata(client);
dev_dbg(&client->dev, "\n");
regmap_exit(dev->regmap[2]);
i2c_unregister_device(dev->client[2]);
regmap_exit(dev->regmap[1]);
i2c_unregister_device(dev->client[1]);
regmap_exit(dev->regmap[0]);
kfree(dev);
return 0;
}
static const struct i2c_device_id mn88473_id_table[] = {
{"mn88473", 0},
{}
};
MODULE_DEVICE_TABLE(i2c, mn88473_id_table);
static struct i2c_driver mn88473_driver = {
.driver = {
.owner = THIS_MODULE,
.name = "mn88473",
},
.probe = mn88473_probe,
.remove = mn88473_remove,
.id_table = mn88473_id_table,
};
module_i2c_driver(mn88473_driver);
MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
MODULE_DESCRIPTION("Panasonic MN88473 DVB-T/T2/C demodulator driver");
MODULE_LICENSE("GPL");
MODULE_FIRMWARE(MN88473_FIRMWARE);
|