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Linux 4.16.11
[linux/fpc-iii.git] / drivers / media / dvb-frontends / si2168.c
blob539399dac55149e0554960f430b081881065f545
1 /*
2 * Silicon Labs Si2168 DVB-T/T2/C demodulator driver
3 *
4 * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 */
16
17 #include <linux/delay.h>
18
19 #include "si2168_priv.h"
20
21 static const struct dvb_frontend_ops si2168_ops;
22
23 /* execute firmware command */
24 static int si2168_cmd_execute(struct i2c_client *client, struct si2168_cmd *cmd)
25 {
26 struct si2168_dev *dev = i2c_get_clientdata(client);
27 int ret;
28 unsigned long timeout;
29
30 mutex_lock(&dev->i2c_mutex);
31
32 if (cmd->wlen) {
33 /* write cmd and args for firmware */
34 ret = i2c_master_send(client, cmd->args, cmd->wlen);
35 if (ret < 0) {
36 goto err_mutex_unlock;
37 } else if (ret != cmd->wlen) {
38 ret = -EREMOTEIO;
39 goto err_mutex_unlock;
40 }
41 }
42
43 if (cmd->rlen) {
44 /* wait cmd execution terminate */
45 #define TIMEOUT 70
46 timeout = jiffies + msecs_to_jiffies(TIMEOUT);
47 while (!time_after(jiffies, timeout)) {
48 ret = i2c_master_recv(client, cmd->args, cmd->rlen);
49 if (ret < 0) {
50 goto err_mutex_unlock;
51 } else if (ret != cmd->rlen) {
52 ret = -EREMOTEIO;
53 goto err_mutex_unlock;
54 }
55
56 /* firmware ready? */
57 if ((cmd->args[0] >> 7) & 0x01)
58 break;
59 }
60
61 dev_dbg(&client->dev, "cmd execution took %d ms\n",
62 jiffies_to_msecs(jiffies) -
63 (jiffies_to_msecs(timeout) - TIMEOUT));
64
65 /* error bit set? */
66 if ((cmd->args[0] >> 6) & 0x01) {
67 ret = -EREMOTEIO;
68 goto err_mutex_unlock;
69 }
70
71 if (!((cmd->args[0] >> 7) & 0x01)) {
72 ret = -ETIMEDOUT;
73 goto err_mutex_unlock;
74 }
75 }
76
77 mutex_unlock(&dev->i2c_mutex);
78 return 0;
79 err_mutex_unlock:
80 mutex_unlock(&dev->i2c_mutex);
81 dev_dbg(&client->dev, "failed=%d\n", ret);
82 return ret;
83 }
84
85 static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status)
86 {
87 struct i2c_client *client = fe->demodulator_priv;
88 struct si2168_dev *dev = i2c_get_clientdata(client);
89 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
90 int ret, i;
91 unsigned int utmp, utmp1, utmp2;
92 struct si2168_cmd cmd;
93
94 *status = 0;
95
96 if (!dev->active) {
97 ret = -EAGAIN;
98 goto err;
99 }
100
101 switch (c->delivery_system) {
102 case SYS_DVBT:
103 memcpy(cmd.args, "\xa0\x01", 2);
104 cmd.wlen = 2;
105 cmd.rlen = 13;
106 break;
107 case SYS_DVBC_ANNEX_A:
108 memcpy(cmd.args, "\x90\x01", 2);
109 cmd.wlen = 2;
110 cmd.rlen = 9;
111 break;
112 case SYS_DVBT2:
113 memcpy(cmd.args, "\x50\x01", 2);
114 cmd.wlen = 2;
115 cmd.rlen = 14;
116 break;
117 default:
118 ret = -EINVAL;
119 goto err;
120 }
121
122 ret = si2168_cmd_execute(client, &cmd);
123 if (ret)
124 goto err;
125
126 switch ((cmd.args[2] >> 1) & 0x03) {
127 case 0x01:
128 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
129 break;
130 case 0x03:
131 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
132 FE_HAS_SYNC | FE_HAS_LOCK;
133 break;
134 }
135
136 dev->fe_status = *status;
137
138 if (*status & FE_HAS_LOCK) {
139 c->cnr.len = 1;
140 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
141 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4;
142 } else {
143 c->cnr.len = 1;
144 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
145 }
146
147 dev_dbg(&client->dev, "status=%02x args=%*ph\n",
148 *status, cmd.rlen, cmd.args);
149
150 /* BER */
151 if (*status & FE_HAS_VITERBI) {
152 memcpy(cmd.args, "\x82\x00", 2);
153 cmd.wlen = 2;
154 cmd.rlen = 3;
155 ret = si2168_cmd_execute(client, &cmd);
156 if (ret)
157 goto err;
158
159 /*
160 * Firmware returns [0, 255] mantissa and [0, 8] exponent.
161 * Convert to DVB API: mantissa * 10^(8 - exponent) / 10^8
162 */
163 utmp = clamp(8 - cmd.args[1], 0, 8);
164 for (i = 0, utmp1 = 1; i < utmp; i++)
165 utmp1 = utmp1 * 10;
166
167 utmp1 = cmd.args[2] * utmp1;
168 utmp2 = 100000000; /* 10^8 */
169
170 dev_dbg(&client->dev,
171 "post_bit_error=%u post_bit_count=%u ber=%u*10^-%u\n",
172 utmp1, utmp2, cmd.args[2], cmd.args[1]);
173
174 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
175 c->post_bit_error.stat[0].uvalue += utmp1;
176 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
177 c->post_bit_count.stat[0].uvalue += utmp2;
178 } else {
179 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
180 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
181 }
182
183 /* UCB */
184 if (*status & FE_HAS_SYNC) {
185 memcpy(cmd.args, "\x84\x01", 2);
186 cmd.wlen = 2;
187 cmd.rlen = 3;
188 ret = si2168_cmd_execute(client, &cmd);
189 if (ret)
190 goto err;
191
192 utmp1 = cmd.args[2] << 8 | cmd.args[1] << 0;
193 dev_dbg(&client->dev, "block_error=%u\n", utmp1);
194
195 /* Sometimes firmware returns bogus value */
196 if (utmp1 == 0xffff)
197 utmp1 = 0;
198
199 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
200 c->block_error.stat[0].uvalue += utmp1;
201 } else {
202 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
203 }
204
205 return 0;
206 err:
207 dev_dbg(&client->dev, "failed=%d\n", ret);
208 return ret;
209 }
210
211 static int si2168_set_frontend(struct dvb_frontend *fe)
212 {
213 struct i2c_client *client = fe->demodulator_priv;
214 struct si2168_dev *dev = i2c_get_clientdata(client);
215 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
216 int ret;
217 struct si2168_cmd cmd;
218 u8 bandwidth, delivery_system;
219
220 dev_dbg(&client->dev,
221 "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\n",
222 c->delivery_system, c->modulation, c->frequency,
223 c->bandwidth_hz, c->symbol_rate, c->inversion,
224 c->stream_id);
225
226 if (!dev->active) {
227 ret = -EAGAIN;
228 goto err;
229 }
230
231 switch (c->delivery_system) {
232 case SYS_DVBT:
233 delivery_system = 0x20;
234 break;
235 case SYS_DVBC_ANNEX_A:
236 delivery_system = 0x30;
237 break;
238 case SYS_DVBT2:
239 delivery_system = 0x70;
240 break;
241 default:
242 ret = -EINVAL;
243 goto err;
244 }
245
246 if (c->bandwidth_hz == 0) {
247 ret = -EINVAL;
248 goto err;
249 } else if (c->bandwidth_hz <= 2000000)
250 bandwidth = 0x02;
251 else if (c->bandwidth_hz <= 5000000)
252 bandwidth = 0x05;
253 else if (c->bandwidth_hz <= 6000000)
254 bandwidth = 0x06;
255 else if (c->bandwidth_hz <= 7000000)
256 bandwidth = 0x07;
257 else if (c->bandwidth_hz <= 8000000)
258 bandwidth = 0x08;
259 else if (c->bandwidth_hz <= 9000000)
260 bandwidth = 0x09;
261 else if (c->bandwidth_hz <= 10000000)
262 bandwidth = 0x0a;
263 else
264 bandwidth = 0x0f;
265
266 /* program tuner */
267 if (fe->ops.tuner_ops.set_params) {
268 ret = fe->ops.tuner_ops.set_params(fe);
269 if (ret)
270 goto err;
271 }
272
273 memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5);
274 cmd.wlen = 5;
275 cmd.rlen = 5;
276 ret = si2168_cmd_execute(client, &cmd);
277 if (ret)
278 goto err;
279
280 /* that has no big effect */
281 if (c->delivery_system == SYS_DVBT)
282 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6);
283 else if (c->delivery_system == SYS_DVBC_ANNEX_A)
284 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6);
285 else if (c->delivery_system == SYS_DVBT2)
286 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6);
287 cmd.wlen = 6;
288 cmd.rlen = 3;
289 ret = si2168_cmd_execute(client, &cmd);
290 if (ret)
291 goto err;
292
293 if (c->delivery_system == SYS_DVBT2) {
294 /* select PLP */
295 cmd.args[0] = 0x52;
296 cmd.args[1] = c->stream_id & 0xff;
297 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1;
298 cmd.wlen = 3;
299 cmd.rlen = 1;
300 ret = si2168_cmd_execute(client, &cmd);
301 if (ret)
302 goto err;
303 }
304
305 memcpy(cmd.args, "\x51\x03", 2);
306 cmd.wlen = 2;
307 cmd.rlen = 12;
308 ret = si2168_cmd_execute(client, &cmd);
309 if (ret)
310 goto err;
311
312 memcpy(cmd.args, "\x12\x08\x04", 3);
313 cmd.wlen = 3;
314 cmd.rlen = 3;
315 ret = si2168_cmd_execute(client, &cmd);
316 if (ret)
317 goto err;
318
319 memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6);
320 cmd.wlen = 6;
321 cmd.rlen = 4;
322 ret = si2168_cmd_execute(client, &cmd);
323 if (ret)
324 goto err;
325
326 memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6);
327 cmd.wlen = 6;
328 cmd.rlen = 4;
329 ret = si2168_cmd_execute(client, &cmd);
330 if (ret)
331 goto err;
332
333 memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6);
334 cmd.wlen = 6;
335 cmd.rlen = 4;
336 ret = si2168_cmd_execute(client, &cmd);
337 if (ret)
338 goto err;
339
340 memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6);
341 cmd.args[4] = delivery_system | bandwidth;
342 cmd.wlen = 6;
343 cmd.rlen = 4;
344 ret = si2168_cmd_execute(client, &cmd);
345 if (ret)
346 goto err;
347
348 /* set DVB-C symbol rate */
349 if (c->delivery_system == SYS_DVBC_ANNEX_A) {
350 memcpy(cmd.args, "\x14\x00\x02\x11", 4);
351 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff;
352 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff;
353 cmd.wlen = 6;
354 cmd.rlen = 4;
355 ret = si2168_cmd_execute(client, &cmd);
356 if (ret)
357 goto err;
358 }
359
360 memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6);
361 cmd.wlen = 6;
362 cmd.rlen = 4;
363 ret = si2168_cmd_execute(client, &cmd);
364 if (ret)
365 goto err;
366
367 memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6);
368 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
369 cmd.wlen = 6;
370 cmd.rlen = 4;
371 ret = si2168_cmd_execute(client, &cmd);
372 if (ret)
373 goto err;
374
375 memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6);
376 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
377 cmd.wlen = 6;
378 cmd.rlen = 4;
379 ret = si2168_cmd_execute(client, &cmd);
380 if (ret)
381 goto err;
382
383 memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6);
384 cmd.wlen = 6;
385 cmd.rlen = 4;
386 ret = si2168_cmd_execute(client, &cmd);
387 if (ret)
388 goto err;
389
390 memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6);
391 cmd.wlen = 6;
392 cmd.rlen = 4;
393 ret = si2168_cmd_execute(client, &cmd);
394 if (ret)
395 goto err;
396
397 memcpy(cmd.args, "\x85", 1);
398 cmd.wlen = 1;
399 cmd.rlen = 1;
400 ret = si2168_cmd_execute(client, &cmd);
401 if (ret)
402 goto err;
403
404 dev->delivery_system = c->delivery_system;
405
406 return 0;
407 err:
408 dev_dbg(&client->dev, "failed=%d\n", ret);
409 return ret;
410 }
411
412 static int si2168_init(struct dvb_frontend *fe)
413 {
414 struct i2c_client *client = fe->demodulator_priv;
415 struct si2168_dev *dev = i2c_get_clientdata(client);
416 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
417 int ret, len, remaining;
418 const struct firmware *fw;
419 struct si2168_cmd cmd;
420
421 dev_dbg(&client->dev, "\n");
422
423 /* initialize */
424 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
425 cmd.wlen = 13;
426 cmd.rlen = 0;
427 ret = si2168_cmd_execute(client, &cmd);
428 if (ret)
429 goto err;
430
431 if (dev->warm) {
432 /* resume */
433 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8);
434 cmd.wlen = 8;
435 cmd.rlen = 1;
436 ret = si2168_cmd_execute(client, &cmd);
437 if (ret)
438 goto err;
439
440 udelay(100);
441 memcpy(cmd.args, "\x85", 1);
442 cmd.wlen = 1;
443 cmd.rlen = 1;
444 ret = si2168_cmd_execute(client, &cmd);
445 if (ret)
446 goto err;
447
448 goto warm;
449 }
450
451 /* power up */
452 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
453 cmd.wlen = 8;
454 cmd.rlen = 1;
455 ret = si2168_cmd_execute(client, &cmd);
456 if (ret)
457 goto err;
458
459 /* request the firmware, this will block and timeout */
460 ret = request_firmware(&fw, dev->firmware_name, &client->dev);
461 if (ret) {
462 /* fallback mechanism to handle old name for Si2168 B40 fw */
463 if (dev->chip_id == SI2168_CHIP_ID_B40) {
464 dev->firmware_name = SI2168_B40_FIRMWARE_FALLBACK;
465 ret = request_firmware(&fw, dev->firmware_name,
466 &client->dev);
467 }
468
469 if (ret == 0) {
470 dev_notice(&client->dev,
471 "please install firmware file '%s'\n",
472 SI2168_B40_FIRMWARE);
473 } else {
474 dev_err(&client->dev,
475 "firmware file '%s' not found\n",
476 dev->firmware_name);
477 goto err_release_firmware;
478 }
479 }
480
481 dev_info(&client->dev, "downloading firmware from file '%s'\n",
482 dev->firmware_name);
483
484 if ((fw->size % 17 == 0) && (fw->data[0] > 5)) {
485 /* firmware is in the new format */
486 for (remaining = fw->size; remaining > 0; remaining -= 17) {
487 len = fw->data[fw->size - remaining];
488 if (len > SI2168_ARGLEN) {
489 ret = -EINVAL;
490 break;
491 }
492 memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
493 cmd.wlen = len;
494 cmd.rlen = 1;
495 ret = si2168_cmd_execute(client, &cmd);
496 if (ret)
497 break;
498 }
499 } else if (fw->size % 8 == 0) {
500 /* firmware is in the old format */
501 for (remaining = fw->size; remaining > 0; remaining -= 8) {
502 len = 8;
503 memcpy(cmd.args, &fw->data[fw->size - remaining], len);
504 cmd.wlen = len;
505 cmd.rlen = 1;
506 ret = si2168_cmd_execute(client, &cmd);
507 if (ret)
508 break;
509 }
510 } else {
511 /* bad or unknown firmware format */
512 ret = -EINVAL;
513 }
514
515 if (ret) {
516 dev_err(&client->dev, "firmware download failed %d\n", ret);
517 goto err_release_firmware;
518 }
519
520 release_firmware(fw);
521
522 memcpy(cmd.args, "\x01\x01", 2);
523 cmd.wlen = 2;
524 cmd.rlen = 1;
525 ret = si2168_cmd_execute(client, &cmd);
526 if (ret)
527 goto err;
528
529 /* query firmware version */
530 memcpy(cmd.args, "\x11", 1);
531 cmd.wlen = 1;
532 cmd.rlen = 10;
533 ret = si2168_cmd_execute(client, &cmd);
534 if (ret)
535 goto err;
536
537 dev->version = (cmd.args[9] + '@') << 24 | (cmd.args[6] - '0') << 16 |
538 (cmd.args[7] - '0') << 8 | (cmd.args[8]) << 0;
539 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n",
540 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
541 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff);
542
543 /* set ts mode */
544 memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
545 cmd.args[4] |= dev->ts_mode;
546 if (dev->ts_clock_gapped)
547 cmd.args[4] |= 0x40;
548 cmd.wlen = 6;
549 cmd.rlen = 4;
550 ret = si2168_cmd_execute(client, &cmd);
551 if (ret)
552 goto err;
553
554 dev->warm = true;
555 warm:
556 /* Init stats here to indicate which stats are supported */
557 c->cnr.len = 1;
558 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
559 c->post_bit_error.len = 1;
560 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
561 c->post_bit_count.len = 1;
562 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
563 c->block_error.len = 1;
564 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
565
566 dev->active = true;
567
568 return 0;
569 err_release_firmware:
570 release_firmware(fw);
571 err:
572 dev_dbg(&client->dev, "failed=%d\n", ret);
573 return ret;
574 }
575
576 static int si2168_sleep(struct dvb_frontend *fe)
577 {
578 struct i2c_client *client = fe->demodulator_priv;
579 struct si2168_dev *dev = i2c_get_clientdata(client);
580 int ret;
581 struct si2168_cmd cmd;
582
583 dev_dbg(&client->dev, "\n");
584
585 dev->active = false;
586
587 /* Firmware B 4.0-11 or later loses warm state during sleep */
588 if (dev->version > ('B' << 24 | 4 << 16 | 0 << 8 | 11 << 0))
589 dev->warm = false;
590
591 memcpy(cmd.args, "\x13", 1);
592 cmd.wlen = 1;
593 cmd.rlen = 0;
594 ret = si2168_cmd_execute(client, &cmd);
595 if (ret)
596 goto err;
597
598 return 0;
599 err:
600 dev_dbg(&client->dev, "failed=%d\n", ret);
601 return ret;
602 }
603
604 static int si2168_get_tune_settings(struct dvb_frontend *fe,
605 struct dvb_frontend_tune_settings *s)
606 {
607 s->min_delay_ms = 900;
608
609 return 0;
610 }
611
612 static int si2168_select(struct i2c_mux_core *muxc, u32 chan)
613 {
614 struct i2c_client *client = i2c_mux_priv(muxc);
615 int ret;
616 struct si2168_cmd cmd;
617
618 /* open I2C gate */
619 memcpy(cmd.args, "\xc0\x0d\x01", 3);
620 cmd.wlen = 3;
621 cmd.rlen = 0;
622 ret = si2168_cmd_execute(client, &cmd);
623 if (ret)
624 goto err;
625
626 return 0;
627 err:
628 dev_dbg(&client->dev, "failed=%d\n", ret);
629 return ret;
630 }
631
632 static int si2168_deselect(struct i2c_mux_core *muxc, u32 chan)
633 {
634 struct i2c_client *client = i2c_mux_priv(muxc);
635 int ret;
636 struct si2168_cmd cmd;
637
638 /* close I2C gate */
639 memcpy(cmd.args, "\xc0\x0d\x00", 3);
640 cmd.wlen = 3;
641 cmd.rlen = 0;
642 ret = si2168_cmd_execute(client, &cmd);
643 if (ret)
644 goto err;
645
646 return 0;
647 err:
648 dev_dbg(&client->dev, "failed=%d\n", ret);
649 return ret;
650 }
651
652 static const struct dvb_frontend_ops si2168_ops = {
653 .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
654 .info = {
655 .name = "Silicon Labs Si2168",
656 .symbol_rate_min = 1000000,
657 .symbol_rate_max = 7200000,
658 .caps = FE_CAN_FEC_1_2 |
659 FE_CAN_FEC_2_3 |
660 FE_CAN_FEC_3_4 |
661 FE_CAN_FEC_5_6 |
662 FE_CAN_FEC_7_8 |
663 FE_CAN_FEC_AUTO |
664 FE_CAN_QPSK |
665 FE_CAN_QAM_16 |
666 FE_CAN_QAM_32 |
667 FE_CAN_QAM_64 |
668 FE_CAN_QAM_128 |
669 FE_CAN_QAM_256 |
670 FE_CAN_QAM_AUTO |
671 FE_CAN_TRANSMISSION_MODE_AUTO |
672 FE_CAN_GUARD_INTERVAL_AUTO |
673 FE_CAN_HIERARCHY_AUTO |
674 FE_CAN_MUTE_TS |
675 FE_CAN_2G_MODULATION |
676 FE_CAN_MULTISTREAM
677 },
678
679 .get_tune_settings = si2168_get_tune_settings,
680
681 .init = si2168_init,
682 .sleep = si2168_sleep,
683
684 .set_frontend = si2168_set_frontend,
685
686 .read_status = si2168_read_status,
687 };
688
689 static int si2168_probe(struct i2c_client *client,
690 const struct i2c_device_id *id)
691 {
692 struct si2168_config *config = client->dev.platform_data;
693 struct si2168_dev *dev;
694 int ret;
695 struct si2168_cmd cmd;
696
697 dev_dbg(&client->dev, "\n");
698
699 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
700 if (!dev) {
701 ret = -ENOMEM;
702 goto err;
703 }
704
705 i2c_set_clientdata(client, dev);
706 mutex_init(&dev->i2c_mutex);
707
708 /* Initialize */
709 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
710 cmd.wlen = 13;
711 cmd.rlen = 0;
712 ret = si2168_cmd_execute(client, &cmd);
713 if (ret)
714 goto err_kfree;
715
716 /* Power up */
717 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
718 cmd.wlen = 8;
719 cmd.rlen = 1;
720 ret = si2168_cmd_execute(client, &cmd);
721 if (ret)
722 goto err_kfree;
723
724 /* Query chip revision */
725 memcpy(cmd.args, "\x02", 1);
726 cmd.wlen = 1;
727 cmd.rlen = 13;
728 ret = si2168_cmd_execute(client, &cmd);
729 if (ret)
730 goto err_kfree;
731
732 dev->chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 |
733 cmd.args[3] << 8 | cmd.args[4] << 0;
734
735 switch (dev->chip_id) {
736 case SI2168_CHIP_ID_A20:
737 dev->firmware_name = SI2168_A20_FIRMWARE;
738 break;
739 case SI2168_CHIP_ID_A30:
740 dev->firmware_name = SI2168_A30_FIRMWARE;
741 break;
742 case SI2168_CHIP_ID_B40:
743 dev->firmware_name = SI2168_B40_FIRMWARE;
744 break;
745 case SI2168_CHIP_ID_D60:
746 dev->firmware_name = SI2168_D60_FIRMWARE;
747 break;
748 default:
749 dev_dbg(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
750 cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);
751 ret = -ENODEV;
752 goto err_kfree;
753 }
754
755 dev->version = (cmd.args[1]) << 24 | (cmd.args[3] - '0') << 16 |
756 (cmd.args[4] - '0') << 8 | (cmd.args[5]) << 0;
757
758 /* create mux i2c adapter for tuner */
759 dev->muxc = i2c_mux_alloc(client->adapter, &client->dev,
760 1, 0, I2C_MUX_LOCKED,
761 si2168_select, si2168_deselect);
762 if (!dev->muxc) {
763 ret = -ENOMEM;
764 goto err_kfree;
765 }
766 dev->muxc->priv = client;
767 ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0);
768 if (ret)
769 goto err_kfree;
770
771 /* create dvb_frontend */
772 memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
773 dev->fe.demodulator_priv = client;
774 *config->i2c_adapter = dev->muxc->adapter[0];
775 *config->fe = &dev->fe;
776 dev->ts_mode = config->ts_mode;
777 dev->ts_clock_inv = config->ts_clock_inv;
778 dev->ts_clock_gapped = config->ts_clock_gapped;
779
780 dev_info(&client->dev, "Silicon Labs Si2168-%c%d%d successfully identified\n",
781 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
782 dev->version >> 8 & 0xff);
783 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n",
784 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
785 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff);
786
787 return 0;
788 err_kfree:
789 kfree(dev);
790 err:
791 dev_dbg(&client->dev, "failed=%d\n", ret);
792 return ret;
793 }
794
795 static int si2168_remove(struct i2c_client *client)
796 {
797 struct si2168_dev *dev = i2c_get_clientdata(client);
798
799 dev_dbg(&client->dev, "\n");
800
801 i2c_mux_del_adapters(dev->muxc);
802
803 dev->fe.ops.release = NULL;
804 dev->fe.demodulator_priv = NULL;
805
806 kfree(dev);
807
808 return 0;
809 }
810
811 static const struct i2c_device_id si2168_id_table[] = {
812 {"si2168", 0},
813 {}
814 };
815 MODULE_DEVICE_TABLE(i2c, si2168_id_table);
816
817 static struct i2c_driver si2168_driver = {
818 .driver = {
819 .name = "si2168",
820 .suppress_bind_attrs = true,
821 },
822 .probe = si2168_probe,
823 .remove = si2168_remove,
824 .id_table = si2168_id_table,
825 };
826
827 module_i2c_driver(si2168_driver);
828
829 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
830 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
831 MODULE_LICENSE("GPL");
832 MODULE_FIRMWARE(SI2168_A20_FIRMWARE);
833 MODULE_FIRMWARE(SI2168_A30_FIRMWARE);
834 MODULE_FIRMWARE(SI2168_B40_FIRMWARE);
835 MODULE_FIRMWARE(SI2168_D60_FIRMWARE);
Linux with added FPC-III support