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spi: sprd: adi: Add a reset reason for watchdog mode
[linux/fpc-iii.git] / drivers / media / dvb-frontends / si2168.c
blob168c503e9154f97d41642562ffe3a93aea5561c0
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Silicon Labs Si2168 DVB-T/T2/C demodulator driver
4 *
5 * Copyright (C) 2014 Antti Palosaari <crope@iki.fi>
6 */
7
8 #include <linux/delay.h>
9
10 #include "si2168_priv.h"
11
12 static const struct dvb_frontend_ops si2168_ops;
13
14 /* execute firmware command */
15 static int si2168_cmd_execute(struct i2c_client *client, struct si2168_cmd *cmd)
16 {
17 struct si2168_dev *dev = i2c_get_clientdata(client);
18 int ret;
19 unsigned long timeout;
20
21 mutex_lock(&dev->i2c_mutex);
22
23 if (cmd->wlen) {
24 /* write cmd and args for firmware */
25 ret = i2c_master_send(client, cmd->args, cmd->wlen);
26 if (ret < 0) {
27 goto err_mutex_unlock;
28 } else if (ret != cmd->wlen) {
29 ret = -EREMOTEIO;
30 goto err_mutex_unlock;
31 }
32 }
33
34 if (cmd->rlen) {
35 /* wait cmd execution terminate */
36 #define TIMEOUT 70
37 timeout = jiffies + msecs_to_jiffies(TIMEOUT);
38 while (!time_after(jiffies, timeout)) {
39 ret = i2c_master_recv(client, cmd->args, cmd->rlen);
40 if (ret < 0) {
41 goto err_mutex_unlock;
42 } else if (ret != cmd->rlen) {
43 ret = -EREMOTEIO;
44 goto err_mutex_unlock;
45 }
46
47 /* firmware ready? */
48 if ((cmd->args[0] >> 7) & 0x01)
49 break;
50 }
51
52 dev_dbg(&client->dev, "cmd execution took %d ms\n",
53 jiffies_to_msecs(jiffies) -
54 (jiffies_to_msecs(timeout) - TIMEOUT));
55
56 /* error bit set? */
57 if ((cmd->args[0] >> 6) & 0x01) {
58 ret = -EREMOTEIO;
59 goto err_mutex_unlock;
60 }
61
62 if (!((cmd->args[0] >> 7) & 0x01)) {
63 ret = -ETIMEDOUT;
64 goto err_mutex_unlock;
65 }
66 }
67
68 mutex_unlock(&dev->i2c_mutex);
69 return 0;
70 err_mutex_unlock:
71 mutex_unlock(&dev->i2c_mutex);
72 dev_dbg(&client->dev, "failed=%d\n", ret);
73 return ret;
74 }
75
76 static int si2168_ts_bus_ctrl(struct dvb_frontend *fe, int acquire)
77 {
78 struct i2c_client *client = fe->demodulator_priv;
79 struct si2168_dev *dev = i2c_get_clientdata(client);
80 struct si2168_cmd cmd;
81 int ret = 0;
82
83 dev_dbg(&client->dev, "%s acquire: %d\n", __func__, acquire);
84
85 /* set TS_MODE property */
86 memcpy(cmd.args, "\x14\x00\x01\x10\x10\x00", 6);
87 if (acquire)
88 cmd.args[4] |= dev->ts_mode;
89 else
90 cmd.args[4] |= SI2168_TS_TRISTATE;
91 if (dev->ts_clock_gapped)
92 cmd.args[4] |= 0x40;
93 cmd.wlen = 6;
94 cmd.rlen = 4;
95 ret = si2168_cmd_execute(client, &cmd);
96
97 return ret;
98 }
99
100 static int si2168_read_status(struct dvb_frontend *fe, enum fe_status *status)
101 {
102 struct i2c_client *client = fe->demodulator_priv;
103 struct si2168_dev *dev = i2c_get_clientdata(client);
104 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
105 int ret, i;
106 unsigned int utmp, utmp1, utmp2;
107 struct si2168_cmd cmd;
108
109 *status = 0;
110
111 if (!dev->active) {
112 ret = -EAGAIN;
113 goto err;
114 }
115
116 switch (c->delivery_system) {
117 case SYS_DVBT:
118 memcpy(cmd.args, "\xa0\x01", 2);
119 cmd.wlen = 2;
120 cmd.rlen = 13;
121 break;
122 case SYS_DVBC_ANNEX_A:
123 memcpy(cmd.args, "\x90\x01", 2);
124 cmd.wlen = 2;
125 cmd.rlen = 9;
126 break;
127 case SYS_DVBT2:
128 memcpy(cmd.args, "\x50\x01", 2);
129 cmd.wlen = 2;
130 cmd.rlen = 14;
131 break;
132 default:
133 ret = -EINVAL;
134 goto err;
135 }
136
137 ret = si2168_cmd_execute(client, &cmd);
138 if (ret)
139 goto err;
140
141 switch ((cmd.args[2] >> 1) & 0x03) {
142 case 0x01:
143 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER;
144 break;
145 case 0x03:
146 *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI |
147 FE_HAS_SYNC | FE_HAS_LOCK;
148 break;
149 }
150
151 dev->fe_status = *status;
152
153 if (*status & FE_HAS_LOCK) {
154 c->cnr.len = 1;
155 c->cnr.stat[0].scale = FE_SCALE_DECIBEL;
156 c->cnr.stat[0].svalue = cmd.args[3] * 1000 / 4;
157 } else {
158 c->cnr.len = 1;
159 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
160 }
161
162 dev_dbg(&client->dev, "status=%02x args=%*ph\n",
163 *status, cmd.rlen, cmd.args);
164
165 /* BER */
166 if (*status & FE_HAS_VITERBI) {
167 memcpy(cmd.args, "\x82\x00", 2);
168 cmd.wlen = 2;
169 cmd.rlen = 3;
170 ret = si2168_cmd_execute(client, &cmd);
171 if (ret)
172 goto err;
173
174 /*
175 * Firmware returns [0, 255] mantissa and [0, 8] exponent.
176 * Convert to DVB API: mantissa * 10^(8 - exponent) / 10^8
177 */
178 utmp = clamp(8 - cmd.args[1], 0, 8);
179 for (i = 0, utmp1 = 1; i < utmp; i++)
180 utmp1 = utmp1 * 10;
181
182 utmp1 = cmd.args[2] * utmp1;
183 utmp2 = 100000000; /* 10^8 */
184
185 dev_dbg(&client->dev,
186 "post_bit_error=%u post_bit_count=%u ber=%u*10^-%u\n",
187 utmp1, utmp2, cmd.args[2], cmd.args[1]);
188
189 c->post_bit_error.stat[0].scale = FE_SCALE_COUNTER;
190 c->post_bit_error.stat[0].uvalue += utmp1;
191 c->post_bit_count.stat[0].scale = FE_SCALE_COUNTER;
192 c->post_bit_count.stat[0].uvalue += utmp2;
193 } else {
194 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
195 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
196 }
197
198 /* UCB */
199 if (*status & FE_HAS_SYNC) {
200 memcpy(cmd.args, "\x84\x01", 2);
201 cmd.wlen = 2;
202 cmd.rlen = 3;
203 ret = si2168_cmd_execute(client, &cmd);
204 if (ret)
205 goto err;
206
207 utmp1 = cmd.args[2] << 8 | cmd.args[1] << 0;
208 dev_dbg(&client->dev, "block_error=%u\n", utmp1);
209
210 /* Sometimes firmware returns bogus value */
211 if (utmp1 == 0xffff)
212 utmp1 = 0;
213
214 c->block_error.stat[0].scale = FE_SCALE_COUNTER;
215 c->block_error.stat[0].uvalue += utmp1;
216 } else {
217 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
218 }
219
220 return 0;
221 err:
222 dev_dbg(&client->dev, "failed=%d\n", ret);
223 return ret;
224 }
225
226 static int si2168_set_frontend(struct dvb_frontend *fe)
227 {
228 struct i2c_client *client = fe->demodulator_priv;
229 struct si2168_dev *dev = i2c_get_clientdata(client);
230 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
231 int ret;
232 struct si2168_cmd cmd;
233 u8 bandwidth, delivery_system;
234
235 dev_dbg(&client->dev,
236 "delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u stream_id=%u\n",
237 c->delivery_system, c->modulation, c->frequency,
238 c->bandwidth_hz, c->symbol_rate, c->inversion,
239 c->stream_id);
240
241 if (!dev->active) {
242 ret = -EAGAIN;
243 goto err;
244 }
245
246 switch (c->delivery_system) {
247 case SYS_DVBT:
248 delivery_system = 0x20;
249 break;
250 case SYS_DVBC_ANNEX_A:
251 delivery_system = 0x30;
252 break;
253 case SYS_DVBT2:
254 delivery_system = 0x70;
255 break;
256 default:
257 ret = -EINVAL;
258 goto err;
259 }
260
261 if (c->bandwidth_hz == 0) {
262 ret = -EINVAL;
263 goto err;
264 } else if (c->bandwidth_hz <= 2000000)
265 bandwidth = 0x02;
266 else if (c->bandwidth_hz <= 5000000)
267 bandwidth = 0x05;
268 else if (c->bandwidth_hz <= 6000000)
269 bandwidth = 0x06;
270 else if (c->bandwidth_hz <= 7000000)
271 bandwidth = 0x07;
272 else if (c->bandwidth_hz <= 8000000)
273 bandwidth = 0x08;
274 else if (c->bandwidth_hz <= 9000000)
275 bandwidth = 0x09;
276 else if (c->bandwidth_hz <= 10000000)
277 bandwidth = 0x0a;
278 else
279 bandwidth = 0x0f;
280
281 /* program tuner */
282 if (fe->ops.tuner_ops.set_params) {
283 ret = fe->ops.tuner_ops.set_params(fe);
284 if (ret)
285 goto err;
286 }
287
288 memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5);
289 cmd.wlen = 5;
290 cmd.rlen = 5;
291 ret = si2168_cmd_execute(client, &cmd);
292 if (ret)
293 goto err;
294
295 /* that has no big effect */
296 if (c->delivery_system == SYS_DVBT)
297 memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6);
298 else if (c->delivery_system == SYS_DVBC_ANNEX_A)
299 memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6);
300 else if (c->delivery_system == SYS_DVBT2)
301 memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6);
302 cmd.wlen = 6;
303 cmd.rlen = 3;
304 ret = si2168_cmd_execute(client, &cmd);
305 if (ret)
306 goto err;
307
308 if (c->delivery_system == SYS_DVBT2) {
309 /* select PLP */
310 cmd.args[0] = 0x52;
311 cmd.args[1] = c->stream_id & 0xff;
312 cmd.args[2] = c->stream_id == NO_STREAM_ID_FILTER ? 0 : 1;
313 cmd.wlen = 3;
314 cmd.rlen = 1;
315 ret = si2168_cmd_execute(client, &cmd);
316 if (ret)
317 goto err;
318 }
319
320 memcpy(cmd.args, "\x51\x03", 2);
321 cmd.wlen = 2;
322 cmd.rlen = 12;
323 ret = si2168_cmd_execute(client, &cmd);
324 if (ret)
325 goto err;
326
327 memcpy(cmd.args, "\x12\x08\x04", 3);
328 cmd.wlen = 3;
329 cmd.rlen = 3;
330 ret = si2168_cmd_execute(client, &cmd);
331 if (ret)
332 goto err;
333
334 memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6);
335 cmd.wlen = 6;
336 cmd.rlen = 4;
337 ret = si2168_cmd_execute(client, &cmd);
338 if (ret)
339 goto err;
340
341 memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6);
342 cmd.wlen = 6;
343 cmd.rlen = 4;
344 ret = si2168_cmd_execute(client, &cmd);
345 if (ret)
346 goto err;
347
348 memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6);
349 cmd.wlen = 6;
350 cmd.rlen = 4;
351 ret = si2168_cmd_execute(client, &cmd);
352 if (ret)
353 goto err;
354
355 memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6);
356 cmd.args[4] = delivery_system | bandwidth;
357 if (dev->spectral_inversion)
358 cmd.args[5] |= 1;
359 cmd.wlen = 6;
360 cmd.rlen = 4;
361 ret = si2168_cmd_execute(client, &cmd);
362 if (ret)
363 goto err;
364
365 /* set DVB-C symbol rate */
366 if (c->delivery_system == SYS_DVBC_ANNEX_A) {
367 memcpy(cmd.args, "\x14\x00\x02\x11", 4);
368 cmd.args[4] = ((c->symbol_rate / 1000) >> 0) & 0xff;
369 cmd.args[5] = ((c->symbol_rate / 1000) >> 8) & 0xff;
370 cmd.wlen = 6;
371 cmd.rlen = 4;
372 ret = si2168_cmd_execute(client, &cmd);
373 if (ret)
374 goto err;
375 }
376
377 memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6);
378 cmd.wlen = 6;
379 cmd.rlen = 4;
380 ret = si2168_cmd_execute(client, &cmd);
381 if (ret)
382 goto err;
383
384 memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x08", 6);
385 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
386 cmd.wlen = 6;
387 cmd.rlen = 4;
388 ret = si2168_cmd_execute(client, &cmd);
389 if (ret)
390 goto err;
391
392 memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x05", 6);
393 cmd.args[5] |= dev->ts_clock_inv ? 0x00 : 0x10;
394 cmd.wlen = 6;
395 cmd.rlen = 4;
396 ret = si2168_cmd_execute(client, &cmd);
397 if (ret)
398 goto err;
399
400 memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6);
401 cmd.wlen = 6;
402 cmd.rlen = 4;
403 ret = si2168_cmd_execute(client, &cmd);
404 if (ret)
405 goto err;
406
407 memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x00", 6);
408 cmd.wlen = 6;
409 cmd.rlen = 4;
410 ret = si2168_cmd_execute(client, &cmd);
411 if (ret)
412 goto err;
413
414 memcpy(cmd.args, "\x85", 1);
415 cmd.wlen = 1;
416 cmd.rlen = 1;
417 ret = si2168_cmd_execute(client, &cmd);
418 if (ret)
419 goto err;
420
421 dev->delivery_system = c->delivery_system;
422
423 /* enable ts bus */
424 ret = si2168_ts_bus_ctrl(fe, 1);
425 if (ret)
426 goto err;
427
428 return 0;
429 err:
430 dev_dbg(&client->dev, "failed=%d\n", ret);
431 return ret;
432 }
433
434 static int si2168_init(struct dvb_frontend *fe)
435 {
436 struct i2c_client *client = fe->demodulator_priv;
437 struct si2168_dev *dev = i2c_get_clientdata(client);
438 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
439 int ret, len, remaining;
440 const struct firmware *fw;
441 struct si2168_cmd cmd;
442
443 dev_dbg(&client->dev, "\n");
444
445 /* initialize */
446 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
447 cmd.wlen = 13;
448 cmd.rlen = 0;
449 ret = si2168_cmd_execute(client, &cmd);
450 if (ret)
451 goto err;
452
453 if (dev->warm) {
454 /* resume */
455 memcpy(cmd.args, "\xc0\x06\x08\x0f\x00\x20\x21\x01", 8);
456 cmd.wlen = 8;
457 cmd.rlen = 1;
458 ret = si2168_cmd_execute(client, &cmd);
459 if (ret)
460 goto err;
461
462 udelay(100);
463 memcpy(cmd.args, "\x85", 1);
464 cmd.wlen = 1;
465 cmd.rlen = 1;
466 ret = si2168_cmd_execute(client, &cmd);
467 if (ret)
468 goto err;
469
470 goto warm;
471 }
472
473 /* power up */
474 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
475 cmd.wlen = 8;
476 cmd.rlen = 1;
477 ret = si2168_cmd_execute(client, &cmd);
478 if (ret)
479 goto err;
480
481 /* request the firmware, this will block and timeout */
482 ret = request_firmware(&fw, dev->firmware_name, &client->dev);
483 if (ret) {
484 /* fallback mechanism to handle old name for Si2168 B40 fw */
485 if (dev->chip_id == SI2168_CHIP_ID_B40) {
486 dev->firmware_name = SI2168_B40_FIRMWARE_FALLBACK;
487 ret = request_firmware(&fw, dev->firmware_name,
488 &client->dev);
489 }
490
491 if (ret == 0) {
492 dev_notice(&client->dev,
493 "please install firmware file '%s'\n",
494 SI2168_B40_FIRMWARE);
495 } else {
496 dev_err(&client->dev,
497 "firmware file '%s' not found\n",
498 dev->firmware_name);
499 goto err_release_firmware;
500 }
501 }
502
503 dev_info(&client->dev, "downloading firmware from file '%s'\n",
504 dev->firmware_name);
505
506 if ((fw->size % 17 == 0) && (fw->data[0] > 5)) {
507 /* firmware is in the new format */
508 for (remaining = fw->size; remaining > 0; remaining -= 17) {
509 len = fw->data[fw->size - remaining];
510 if (len > SI2168_ARGLEN) {
511 ret = -EINVAL;
512 break;
513 }
514 memcpy(cmd.args, &fw->data[(fw->size - remaining) + 1], len);
515 cmd.wlen = len;
516 cmd.rlen = 1;
517 ret = si2168_cmd_execute(client, &cmd);
518 if (ret)
519 break;
520 }
521 } else if (fw->size % 8 == 0) {
522 /* firmware is in the old format */
523 for (remaining = fw->size; remaining > 0; remaining -= 8) {
524 len = 8;
525 memcpy(cmd.args, &fw->data[fw->size - remaining], len);
526 cmd.wlen = len;
527 cmd.rlen = 1;
528 ret = si2168_cmd_execute(client, &cmd);
529 if (ret)
530 break;
531 }
532 } else {
533 /* bad or unknown firmware format */
534 ret = -EINVAL;
535 }
536
537 if (ret) {
538 dev_err(&client->dev, "firmware download failed %d\n", ret);
539 goto err_release_firmware;
540 }
541
542 release_firmware(fw);
543
544 memcpy(cmd.args, "\x01\x01", 2);
545 cmd.wlen = 2;
546 cmd.rlen = 1;
547 ret = si2168_cmd_execute(client, &cmd);
548 if (ret)
549 goto err;
550
551 /* query firmware version */
552 memcpy(cmd.args, "\x11", 1);
553 cmd.wlen = 1;
554 cmd.rlen = 10;
555 ret = si2168_cmd_execute(client, &cmd);
556 if (ret)
557 goto err;
558
559 dev->version = (cmd.args[9] + '@') << 24 | (cmd.args[6] - '0') << 16 |
560 (cmd.args[7] - '0') << 8 | (cmd.args[8]) << 0;
561 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n",
562 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
563 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff);
564
565 /* set ts mode */
566 ret = si2168_ts_bus_ctrl(fe, 1);
567 if (ret)
568 goto err;
569
570 dev->warm = true;
571 warm:
572 /* Init stats here to indicate which stats are supported */
573 c->cnr.len = 1;
574 c->cnr.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
575 c->post_bit_error.len = 1;
576 c->post_bit_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
577 c->post_bit_count.len = 1;
578 c->post_bit_count.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
579 c->block_error.len = 1;
580 c->block_error.stat[0].scale = FE_SCALE_NOT_AVAILABLE;
581
582 dev->active = true;
583
584 return 0;
585 err_release_firmware:
586 release_firmware(fw);
587 err:
588 dev_dbg(&client->dev, "failed=%d\n", ret);
589 return ret;
590 }
591
592 static int si2168_sleep(struct dvb_frontend *fe)
593 {
594 struct i2c_client *client = fe->demodulator_priv;
595 struct si2168_dev *dev = i2c_get_clientdata(client);
596 int ret;
597 struct si2168_cmd cmd;
598
599 dev_dbg(&client->dev, "\n");
600
601 dev->active = false;
602
603 /* tri-state data bus */
604 ret = si2168_ts_bus_ctrl(fe, 0);
605 if (ret)
606 goto err;
607
608 /* Firmware later than B 4.0-11 loses warm state during sleep */
609 if (dev->version > ('B' << 24 | 4 << 16 | 0 << 8 | 11 << 0))
610 dev->warm = false;
611
612 memcpy(cmd.args, "\x13", 1);
613 cmd.wlen = 1;
614 cmd.rlen = 0;
615 ret = si2168_cmd_execute(client, &cmd);
616 if (ret)
617 goto err;
618
619 return 0;
620 err:
621 dev_dbg(&client->dev, "failed=%d\n", ret);
622 return ret;
623 }
624
625 static int si2168_get_tune_settings(struct dvb_frontend *fe,
626 struct dvb_frontend_tune_settings *s)
627 {
628 s->min_delay_ms = 900;
629
630 return 0;
631 }
632
633 static int si2168_select(struct i2c_mux_core *muxc, u32 chan)
634 {
635 struct i2c_client *client = i2c_mux_priv(muxc);
636 int ret;
637 struct si2168_cmd cmd;
638
639 /* open I2C gate */
640 memcpy(cmd.args, "\xc0\x0d\x01", 3);
641 cmd.wlen = 3;
642 cmd.rlen = 0;
643 ret = si2168_cmd_execute(client, &cmd);
644 if (ret)
645 goto err;
646
647 return 0;
648 err:
649 dev_dbg(&client->dev, "failed=%d\n", ret);
650 return ret;
651 }
652
653 static int si2168_deselect(struct i2c_mux_core *muxc, u32 chan)
654 {
655 struct i2c_client *client = i2c_mux_priv(muxc);
656 int ret;
657 struct si2168_cmd cmd;
658
659 /* close I2C gate */
660 memcpy(cmd.args, "\xc0\x0d\x00", 3);
661 cmd.wlen = 3;
662 cmd.rlen = 0;
663 ret = si2168_cmd_execute(client, &cmd);
664 if (ret)
665 goto err;
666
667 return 0;
668 err:
669 dev_dbg(&client->dev, "failed=%d\n", ret);
670 return ret;
671 }
672
673 static const struct dvb_frontend_ops si2168_ops = {
674 .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A},
675 .info = {
676 .name = "Silicon Labs Si2168",
677 .frequency_min_hz = 48 * MHz,
678 .frequency_max_hz = 870 * MHz,
679 .frequency_stepsize_hz = 62500,
680 .symbol_rate_min = 1000000,
681 .symbol_rate_max = 7200000,
682 .caps = FE_CAN_FEC_1_2 |
683 FE_CAN_FEC_2_3 |
684 FE_CAN_FEC_3_4 |
685 FE_CAN_FEC_5_6 |
686 FE_CAN_FEC_7_8 |
687 FE_CAN_FEC_AUTO |
688 FE_CAN_QPSK |
689 FE_CAN_QAM_16 |
690 FE_CAN_QAM_32 |
691 FE_CAN_QAM_64 |
692 FE_CAN_QAM_128 |
693 FE_CAN_QAM_256 |
694 FE_CAN_QAM_AUTO |
695 FE_CAN_TRANSMISSION_MODE_AUTO |
696 FE_CAN_GUARD_INTERVAL_AUTO |
697 FE_CAN_HIERARCHY_AUTO |
698 FE_CAN_MUTE_TS |
699 FE_CAN_2G_MODULATION |
700 FE_CAN_MULTISTREAM
701 },
702
703 .get_tune_settings = si2168_get_tune_settings,
704
705 .init = si2168_init,
706 .sleep = si2168_sleep,
707
708 .set_frontend = si2168_set_frontend,
709
710 .read_status = si2168_read_status,
711 };
712
713 static int si2168_probe(struct i2c_client *client,
714 const struct i2c_device_id *id)
715 {
716 struct si2168_config *config = client->dev.platform_data;
717 struct si2168_dev *dev;
718 int ret;
719 struct si2168_cmd cmd;
720
721 dev_dbg(&client->dev, "\n");
722
723 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
724 if (!dev) {
725 ret = -ENOMEM;
726 goto err;
727 }
728
729 i2c_set_clientdata(client, dev);
730 mutex_init(&dev->i2c_mutex);
731
732 /* Initialize */
733 memcpy(cmd.args, "\xc0\x12\x00\x0c\x00\x0d\x16\x00\x00\x00\x00\x00\x00", 13);
734 cmd.wlen = 13;
735 cmd.rlen = 0;
736 ret = si2168_cmd_execute(client, &cmd);
737 if (ret)
738 goto err_kfree;
739
740 /* Power up */
741 memcpy(cmd.args, "\xc0\x06\x01\x0f\x00\x20\x20\x01", 8);
742 cmd.wlen = 8;
743 cmd.rlen = 1;
744 ret = si2168_cmd_execute(client, &cmd);
745 if (ret)
746 goto err_kfree;
747
748 /* Query chip revision */
749 memcpy(cmd.args, "\x02", 1);
750 cmd.wlen = 1;
751 cmd.rlen = 13;
752 ret = si2168_cmd_execute(client, &cmd);
753 if (ret)
754 goto err_kfree;
755
756 dev->chip_id = cmd.args[1] << 24 | cmd.args[2] << 16 |
757 cmd.args[3] << 8 | cmd.args[4] << 0;
758
759 switch (dev->chip_id) {
760 case SI2168_CHIP_ID_A20:
761 dev->firmware_name = SI2168_A20_FIRMWARE;
762 break;
763 case SI2168_CHIP_ID_A30:
764 dev->firmware_name = SI2168_A30_FIRMWARE;
765 break;
766 case SI2168_CHIP_ID_B40:
767 dev->firmware_name = SI2168_B40_FIRMWARE;
768 break;
769 case SI2168_CHIP_ID_D60:
770 dev->firmware_name = SI2168_D60_FIRMWARE;
771 break;
772 default:
773 dev_dbg(&client->dev, "unknown chip version Si21%d-%c%c%c\n",
774 cmd.args[2], cmd.args[1], cmd.args[3], cmd.args[4]);
775 ret = -ENODEV;
776 goto err_kfree;
777 }
778
779 dev->version = (cmd.args[1]) << 24 | (cmd.args[3] - '0') << 16 |
780 (cmd.args[4] - '0') << 8 | (cmd.args[5]) << 0;
781
782 /* create mux i2c adapter for tuner */
783 dev->muxc = i2c_mux_alloc(client->adapter, &client->dev,
784 1, 0, I2C_MUX_LOCKED,
785 si2168_select, si2168_deselect);
786 if (!dev->muxc) {
787 ret = -ENOMEM;
788 goto err_kfree;
789 }
790 dev->muxc->priv = client;
791 ret = i2c_mux_add_adapter(dev->muxc, 0, 0, 0);
792 if (ret)
793 goto err_kfree;
794
795 /* create dvb_frontend */
796 memcpy(&dev->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops));
797 dev->fe.demodulator_priv = client;
798 *config->i2c_adapter = dev->muxc->adapter[0];
799 *config->fe = &dev->fe;
800 dev->ts_mode = config->ts_mode;
801 dev->ts_clock_inv = config->ts_clock_inv;
802 dev->ts_clock_gapped = config->ts_clock_gapped;
803 dev->spectral_inversion = config->spectral_inversion;
804
805 dev_info(&client->dev, "Silicon Labs Si2168-%c%d%d successfully identified\n",
806 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
807 dev->version >> 8 & 0xff);
808 dev_info(&client->dev, "firmware version: %c %d.%d.%d\n",
809 dev->version >> 24 & 0xff, dev->version >> 16 & 0xff,
810 dev->version >> 8 & 0xff, dev->version >> 0 & 0xff);
811
812 return 0;
813 err_kfree:
814 kfree(dev);
815 err:
816 dev_warn(&client->dev, "probe failed = %d\n", ret);
817 return ret;
818 }
819
820 static int si2168_remove(struct i2c_client *client)
821 {
822 struct si2168_dev *dev = i2c_get_clientdata(client);
823
824 dev_dbg(&client->dev, "\n");
825
826 i2c_mux_del_adapters(dev->muxc);
827
828 dev->fe.ops.release = NULL;
829 dev->fe.demodulator_priv = NULL;
830
831 kfree(dev);
832
833 return 0;
834 }
835
836 static const struct i2c_device_id si2168_id_table[] = {
837 {"si2168", 0},
838 {}
839 };
840 MODULE_DEVICE_TABLE(i2c, si2168_id_table);
841
842 static struct i2c_driver si2168_driver = {
843 .driver = {
844 .name = "si2168",
845 .suppress_bind_attrs = true,
846 },
847 .probe = si2168_probe,
848 .remove = si2168_remove,
849 .id_table = si2168_id_table,
850 };
851
852 module_i2c_driver(si2168_driver);
853
854 MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>");
855 MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver");
856 MODULE_LICENSE("GPL");
857 MODULE_FIRMWARE(SI2168_A20_FIRMWARE);
858 MODULE_FIRMWARE(SI2168_A30_FIRMWARE);
859 MODULE_FIRMWARE(SI2168_B40_FIRMWARE);
860 MODULE_FIRMWARE(SI2168_D60_FIRMWARE);
Linux with added FPC-III support