Commit | Line | Data |
---|---|---|
711615df AP |
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 | ||
845f3505 AP |
17 | #include "si2168_priv.h" |
18 | ||
19 | static const struct dvb_frontend_ops si2168_ops; | |
20 | ||
21 | /* execute firmware command */ | |
22 | static int si2168_cmd_execute(struct si2168 *s, struct si2168_cmd *cmd) | |
23 | { | |
24 | int ret; | |
25 | unsigned long timeout; | |
26 | ||
27 | mutex_lock(&s->i2c_mutex); | |
28 | ||
29 | if (cmd->wlen) { | |
30 | /* write cmd and args for firmware */ | |
31 | ret = i2c_master_send(s->client, cmd->args, cmd->wlen); | |
32 | if (ret < 0) { | |
33 | goto err_mutex_unlock; | |
34 | } else if (ret != cmd->wlen) { | |
35 | ret = -EREMOTEIO; | |
36 | goto err_mutex_unlock; | |
37 | } | |
38 | } | |
39 | ||
40 | if (cmd->rlen) { | |
41 | /* wait cmd execution terminate */ | |
42 | #define TIMEOUT 50 | |
43 | timeout = jiffies + msecs_to_jiffies(TIMEOUT); | |
44 | while (!time_after(jiffies, timeout)) { | |
45 | ret = i2c_master_recv(s->client, cmd->args, cmd->rlen); | |
46 | if (ret < 0) { | |
47 | goto err_mutex_unlock; | |
48 | } else if (ret != cmd->rlen) { | |
49 | ret = -EREMOTEIO; | |
50 | goto err_mutex_unlock; | |
51 | } | |
52 | ||
53 | /* firmware ready? */ | |
54 | if ((cmd->args[0] >> 7) & 0x01) | |
55 | break; | |
56 | } | |
57 | ||
58 | dev_dbg(&s->client->dev, "%s: cmd execution took %d ms\n", | |
59 | __func__, | |
60 | jiffies_to_msecs(jiffies) - | |
61 | (jiffies_to_msecs(timeout) - TIMEOUT)); | |
62 | ||
eefae30a | 63 | if (!((cmd->args[0] >> 7) & 0x01)) { |
845f3505 AP |
64 | ret = -ETIMEDOUT; |
65 | goto err_mutex_unlock; | |
66 | } | |
67 | } | |
68 | ||
69 | ret = 0; | |
70 | ||
71 | err_mutex_unlock: | |
72 | mutex_unlock(&s->i2c_mutex); | |
73 | if (ret) | |
74 | goto err; | |
75 | ||
76 | return 0; | |
77 | err: | |
78 | dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret); | |
79 | return ret; | |
80 | } | |
81 | ||
82 | static int si2168_read_status(struct dvb_frontend *fe, fe_status_t *status) | |
83 | { | |
84 | struct si2168 *s = fe->demodulator_priv; | |
bffab93c | 85 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; |
845f3505 AP |
86 | int ret; |
87 | struct si2168_cmd cmd; | |
88 | ||
89 | *status = 0; | |
90 | ||
91 | if (!s->active) { | |
92 | ret = -EAGAIN; | |
93 | goto err; | |
94 | } | |
95 | ||
bffab93c AP |
96 | switch (c->delivery_system) { |
97 | case SYS_DVBT: | |
98 | cmd.args[0] = 0xa0; | |
99 | cmd.args[1] = 0x01; | |
100 | cmd.wlen = 2; | |
101 | cmd.rlen = 13; | |
102 | break; | |
c790885b AP |
103 | case SYS_DVBC_ANNEX_A: |
104 | cmd.args[0] = 0x90; | |
105 | cmd.args[1] = 0x01; | |
106 | cmd.wlen = 2; | |
107 | cmd.rlen = 9; | |
108 | break; | |
bffab93c AP |
109 | case SYS_DVBT2: |
110 | cmd.args[0] = 0x50; | |
111 | cmd.args[1] = 0x01; | |
112 | cmd.wlen = 2; | |
113 | cmd.rlen = 14; | |
114 | break; | |
115 | default: | |
116 | ret = -EINVAL; | |
117 | goto err; | |
118 | } | |
119 | ||
845f3505 AP |
120 | ret = si2168_cmd_execute(s, &cmd); |
121 | if (ret) | |
122 | goto err; | |
123 | ||
124 | /* | |
125 | * Possible values seen, in order from strong signal to weak: | |
126 | * 16 0001 0110 full lock | |
127 | * 1e 0001 1110 partial lock | |
128 | * 1a 0001 1010 partial lock | |
129 | * 18 0001 1000 no lock | |
130 | * | |
131 | * [b3:b1] lock bits | |
132 | * [b4] statistics ready? Set in a few secs after lock is gained. | |
133 | */ | |
134 | ||
722a042d AP |
135 | switch ((cmd.args[2] >> 1) & 0x03) { |
136 | case 0x01: | |
845f3505 AP |
137 | *status = FE_HAS_SIGNAL | FE_HAS_CARRIER; |
138 | break; | |
722a042d | 139 | case 0x03: |
845f3505 AP |
140 | *status = FE_HAS_SIGNAL | FE_HAS_CARRIER | FE_HAS_VITERBI | |
141 | FE_HAS_SYNC | FE_HAS_LOCK; | |
142 | break; | |
143 | } | |
144 | ||
145 | s->fe_status = *status; | |
146 | ||
147 | dev_dbg(&s->client->dev, "%s: status=%02x args=%*ph\n", | |
148 | __func__, *status, cmd.rlen, cmd.args); | |
149 | ||
150 | return 0; | |
151 | err: | |
152 | dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret); | |
153 | return ret; | |
154 | } | |
155 | ||
156 | static int si2168_set_frontend(struct dvb_frontend *fe) | |
157 | { | |
158 | struct si2168 *s = fe->demodulator_priv; | |
159 | struct dtv_frontend_properties *c = &fe->dtv_property_cache; | |
160 | int ret; | |
161 | struct si2168_cmd cmd; | |
bffab93c | 162 | u8 bandwidth, delivery_system; |
845f3505 AP |
163 | |
164 | dev_dbg(&s->client->dev, | |
165 | "%s: delivery_system=%u modulation=%u frequency=%u bandwidth_hz=%u symbol_rate=%u inversion=%u\n", | |
166 | __func__, c->delivery_system, c->modulation, | |
167 | c->frequency, c->bandwidth_hz, c->symbol_rate, | |
168 | c->inversion); | |
169 | ||
170 | if (!s->active) { | |
171 | ret = -EAGAIN; | |
172 | goto err; | |
173 | } | |
174 | ||
bffab93c AP |
175 | switch (c->delivery_system) { |
176 | case SYS_DVBT: | |
177 | delivery_system = 0x20; | |
178 | break; | |
c790885b AP |
179 | case SYS_DVBC_ANNEX_A: |
180 | delivery_system = 0x30; | |
181 | break; | |
bffab93c AP |
182 | case SYS_DVBT2: |
183 | delivery_system = 0x70; | |
184 | break; | |
185 | default: | |
186 | ret = -EINVAL; | |
187 | goto err; | |
188 | } | |
189 | ||
c790885b | 190 | if (c->bandwidth_hz <= 5000000) |
bffab93c | 191 | bandwidth = 0x05; |
c790885b | 192 | else if (c->bandwidth_hz <= 6000000) |
bffab93c | 193 | bandwidth = 0x06; |
c790885b | 194 | else if (c->bandwidth_hz <= 7000000) |
bffab93c | 195 | bandwidth = 0x07; |
c790885b | 196 | else if (c->bandwidth_hz <= 8000000) |
bffab93c | 197 | bandwidth = 0x08; |
c790885b AP |
198 | else if (c->bandwidth_hz <= 9000000) |
199 | bandwidth = 0x09; | |
200 | else if (c->bandwidth_hz <= 10000000) | |
201 | bandwidth = 0x0a; | |
202 | else | |
203 | bandwidth = 0x0f; | |
845f3505 AP |
204 | |
205 | /* program tuner */ | |
206 | if (fe->ops.tuner_ops.set_params) { | |
207 | ret = fe->ops.tuner_ops.set_params(fe); | |
208 | if (ret) | |
209 | goto err; | |
210 | } | |
211 | ||
212 | memcpy(cmd.args, "\x88\x02\x02\x02\x02", 5); | |
213 | cmd.wlen = 5; | |
214 | cmd.rlen = 5; | |
215 | ret = si2168_cmd_execute(s, &cmd); | |
216 | if (ret) | |
217 | goto err; | |
218 | ||
bffab93c AP |
219 | /* that has no big effect */ |
220 | if (c->delivery_system == SYS_DVBT) | |
221 | memcpy(cmd.args, "\x89\x21\x06\x11\xff\x98", 6); | |
c790885b AP |
222 | else if (c->delivery_system == SYS_DVBC_ANNEX_A) |
223 | memcpy(cmd.args, "\x89\x21\x06\x11\x89\xf0", 6); | |
bffab93c AP |
224 | else if (c->delivery_system == SYS_DVBT2) |
225 | memcpy(cmd.args, "\x89\x21\x06\x11\x89\x20", 6); | |
845f3505 AP |
226 | cmd.wlen = 6; |
227 | cmd.rlen = 3; | |
228 | ret = si2168_cmd_execute(s, &cmd); | |
229 | if (ret) | |
230 | goto err; | |
231 | ||
232 | memcpy(cmd.args, "\x51\x03", 2); | |
233 | cmd.wlen = 2; | |
234 | cmd.rlen = 12; | |
235 | ret = si2168_cmd_execute(s, &cmd); | |
236 | if (ret) | |
237 | goto err; | |
238 | ||
239 | memcpy(cmd.args, "\x12\x08\x04", 3); | |
240 | cmd.wlen = 3; | |
241 | cmd.rlen = 3; | |
242 | ret = si2168_cmd_execute(s, &cmd); | |
243 | if (ret) | |
244 | goto err; | |
245 | ||
246 | memcpy(cmd.args, "\x14\x00\x01\x04\x00\x00", 6); | |
247 | cmd.wlen = 6; | |
248 | cmd.rlen = 1; | |
249 | ret = si2168_cmd_execute(s, &cmd); | |
250 | if (ret) | |
251 | goto err; | |
252 | ||
253 | memcpy(cmd.args, "\x14\x00\x03\x10\x17\x00", 6); | |
254 | cmd.wlen = 6; | |
255 | cmd.rlen = 1; | |
256 | ret = si2168_cmd_execute(s, &cmd); | |
257 | if (ret) | |
258 | goto err; | |
259 | ||
260 | memcpy(cmd.args, "\x14\x00\x02\x10\x15\x00", 6); | |
261 | cmd.wlen = 6; | |
262 | cmd.rlen = 1; | |
263 | ret = si2168_cmd_execute(s, &cmd); | |
264 | if (ret) | |
265 | goto err; | |
266 | ||
267 | memcpy(cmd.args, "\x14\x00\x0c\x10\x12\x00", 6); | |
268 | cmd.wlen = 6; | |
269 | cmd.rlen = 1; | |
270 | ret = si2168_cmd_execute(s, &cmd); | |
271 | if (ret) | |
272 | goto err; | |
273 | ||
274 | memcpy(cmd.args, "\x14\x00\x06\x10\x24\x00", 6); | |
275 | cmd.wlen = 6; | |
276 | cmd.rlen = 1; | |
277 | ret = si2168_cmd_execute(s, &cmd); | |
278 | if (ret) | |
279 | goto err; | |
280 | ||
281 | memcpy(cmd.args, "\x14\x00\x0b\x10\x88\x13", 6); | |
282 | cmd.wlen = 6; | |
283 | cmd.rlen = 1; | |
284 | ret = si2168_cmd_execute(s, &cmd); | |
285 | if (ret) | |
286 | goto err; | |
287 | ||
288 | memcpy(cmd.args, "\x14\x00\x07\x10\x00\x24", 6); | |
289 | cmd.wlen = 6; | |
290 | cmd.rlen = 1; | |
291 | ret = si2168_cmd_execute(s, &cmd); | |
292 | if (ret) | |
293 | goto err; | |
294 | ||
295 | memcpy(cmd.args, "\x14\x00\x0a\x10\x00\x00", 6); | |
bffab93c | 296 | cmd.args[4] = delivery_system | bandwidth; |
845f3505 AP |
297 | cmd.wlen = 6; |
298 | cmd.rlen = 1; | |
299 | ret = si2168_cmd_execute(s, &cmd); | |
300 | if (ret) | |
301 | goto err; | |
302 | ||
303 | memcpy(cmd.args, "\x14\x00\x04\x10\x15\x00", 6); | |
304 | cmd.wlen = 6; | |
305 | cmd.rlen = 1; | |
306 | ret = si2168_cmd_execute(s, &cmd); | |
307 | if (ret) | |
308 | goto err; | |
309 | ||
310 | memcpy(cmd.args, "\x14\x00\x05\x10\xa1\x00", 6); | |
311 | cmd.wlen = 6; | |
312 | cmd.rlen = 1; | |
313 | ret = si2168_cmd_execute(s, &cmd); | |
314 | if (ret) | |
315 | goto err; | |
316 | ||
317 | memcpy(cmd.args, "\x14\x00\x0f\x10\x10\x00", 6); | |
318 | cmd.wlen = 6; | |
319 | cmd.rlen = 1; | |
320 | ret = si2168_cmd_execute(s, &cmd); | |
321 | if (ret) | |
322 | goto err; | |
323 | ||
324 | memcpy(cmd.args, "\x14\x00\x0d\x10\xd0\x02", 6); | |
325 | cmd.wlen = 6; | |
326 | cmd.rlen = 1; | |
327 | ret = si2168_cmd_execute(s, &cmd); | |
328 | if (ret) | |
329 | goto err; | |
330 | ||
331 | memcpy(cmd.args, "\x14\x00\x01\x10\x00\x00", 6); | |
332 | cmd.wlen = 6; | |
333 | cmd.rlen = 1; | |
334 | ret = si2168_cmd_execute(s, &cmd); | |
335 | if (ret) | |
336 | goto err; | |
337 | ||
338 | memcpy(cmd.args, "\x14\x00\x09\x10\xe3\x18", 6); | |
339 | cmd.wlen = 6; | |
340 | cmd.rlen = 1; | |
341 | ret = si2168_cmd_execute(s, &cmd); | |
342 | if (ret) | |
343 | goto err; | |
344 | ||
345 | memcpy(cmd.args, "\x14\x00\x08\x10\xd7\x15", 6); | |
346 | cmd.wlen = 6; | |
347 | cmd.rlen = 1; | |
348 | ret = si2168_cmd_execute(s, &cmd); | |
349 | if (ret) | |
350 | goto err; | |
351 | ||
352 | memcpy(cmd.args, "\x14\x00\x04\x03\x00\x00", 6); | |
353 | cmd.wlen = 6; | |
354 | cmd.rlen = 1; | |
355 | ret = si2168_cmd_execute(s, &cmd); | |
356 | if (ret) | |
357 | goto err; | |
358 | ||
359 | memcpy(cmd.args, "\x14\x00\x03\x03\x00\x00", 6); | |
360 | cmd.wlen = 6; | |
361 | cmd.rlen = 1; | |
362 | ret = si2168_cmd_execute(s, &cmd); | |
363 | if (ret) | |
364 | goto err; | |
365 | ||
366 | memcpy(cmd.args, "\x14\x00\x08\x03\x00\x00", 6); | |
367 | cmd.wlen = 6; | |
368 | cmd.rlen = 1; | |
369 | ret = si2168_cmd_execute(s, &cmd); | |
370 | if (ret) | |
371 | goto err; | |
372 | ||
373 | memcpy(cmd.args, "\x14\x00\x07\x03\x01\x02", 6); | |
374 | cmd.wlen = 6; | |
375 | cmd.rlen = 1; | |
376 | ret = si2168_cmd_execute(s, &cmd); | |
377 | if (ret) | |
378 | goto err; | |
379 | ||
380 | memcpy(cmd.args, "\x14\x00\x06\x03\x00\x00", 6); | |
381 | cmd.wlen = 6; | |
382 | cmd.rlen = 1; | |
383 | ret = si2168_cmd_execute(s, &cmd); | |
384 | if (ret) | |
385 | goto err; | |
386 | ||
387 | memcpy(cmd.args, "\x14\x00\x05\x03\x00\x00", 6); | |
388 | cmd.wlen = 6; | |
389 | cmd.rlen = 1; | |
390 | ret = si2168_cmd_execute(s, &cmd); | |
391 | if (ret) | |
392 | goto err; | |
393 | ||
394 | memcpy(cmd.args, "\x14\x00\x01\x03\x0c\x40", 6); | |
395 | cmd.wlen = 6; | |
396 | cmd.rlen = 1; | |
397 | ret = si2168_cmd_execute(s, &cmd); | |
398 | if (ret) | |
399 | goto err; | |
400 | ||
401 | memcpy(cmd.args, "\x14\x00\x01\x10\x16\x00", 6); | |
402 | cmd.wlen = 6; | |
403 | cmd.rlen = 1; | |
404 | ret = si2168_cmd_execute(s, &cmd); | |
405 | if (ret) | |
406 | goto err; | |
407 | ||
408 | memcpy(cmd.args, "\x14\x00\x01\x12\x00\x00", 6); | |
409 | cmd.wlen = 6; | |
410 | cmd.rlen = 1; | |
411 | ret = si2168_cmd_execute(s, &cmd); | |
412 | if (ret) | |
413 | goto err; | |
414 | ||
415 | cmd.args[0] = 0x85; | |
416 | cmd.wlen = 1; | |
417 | cmd.rlen = 1; | |
418 | ret = si2168_cmd_execute(s, &cmd); | |
419 | if (ret) | |
420 | goto err; | |
421 | ||
422 | s->delivery_system = c->delivery_system; | |
423 | ||
424 | return 0; | |
425 | err: | |
426 | dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret); | |
427 | return ret; | |
428 | } | |
429 | ||
430 | static int si2168_init(struct dvb_frontend *fe) | |
431 | { | |
432 | struct si2168 *s = fe->demodulator_priv; | |
433 | int ret, len, remaining; | |
434 | const struct firmware *fw = NULL; | |
435 | u8 *fw_file = SI2168_FIRMWARE; | |
436 | const unsigned int i2c_wr_max = 8; | |
437 | struct si2168_cmd cmd; | |
438 | ||
439 | dev_dbg(&s->client->dev, "%s:\n", __func__); | |
440 | ||
441 | cmd.args[0] = 0x13; | |
442 | cmd.wlen = 1; | |
443 | cmd.rlen = 0; | |
444 | ret = si2168_cmd_execute(s, &cmd); | |
445 | if (ret) | |
446 | goto err; | |
447 | ||
448 | cmd.args[0] = 0xc0; | |
449 | cmd.args[1] = 0x12; | |
450 | cmd.args[2] = 0x00; | |
451 | cmd.args[3] = 0x0c; | |
452 | cmd.args[4] = 0x00; | |
453 | cmd.args[5] = 0x0d; | |
454 | cmd.args[6] = 0x16; | |
455 | cmd.args[7] = 0x00; | |
456 | cmd.args[8] = 0x00; | |
457 | cmd.args[9] = 0x00; | |
458 | cmd.args[10] = 0x00; | |
459 | cmd.args[11] = 0x00; | |
460 | cmd.args[12] = 0x00; | |
461 | cmd.wlen = 13; | |
462 | cmd.rlen = 0; | |
463 | ret = si2168_cmd_execute(s, &cmd); | |
464 | if (ret) | |
465 | goto err; | |
466 | ||
467 | cmd.args[0] = 0xc0; | |
468 | cmd.args[1] = 0x06; | |
469 | cmd.args[2] = 0x01; | |
470 | cmd.args[3] = 0x0f; | |
471 | cmd.args[4] = 0x00; | |
472 | cmd.args[5] = 0x20; | |
473 | cmd.args[6] = 0x20; | |
474 | cmd.args[7] = 0x01; | |
475 | cmd.wlen = 8; | |
476 | cmd.rlen = 1; | |
477 | ret = si2168_cmd_execute(s, &cmd); | |
478 | if (ret) | |
479 | goto err; | |
480 | ||
481 | cmd.args[0] = 0x02; | |
482 | cmd.wlen = 1; | |
483 | cmd.rlen = 13; | |
484 | ret = si2168_cmd_execute(s, &cmd); | |
485 | if (ret) | |
486 | goto err; | |
487 | ||
845f3505 AP |
488 | /* cold state - try to download firmware */ |
489 | dev_info(&s->client->dev, "%s: found a '%s' in cold state\n", | |
490 | KBUILD_MODNAME, si2168_ops.info.name); | |
491 | ||
492 | /* request the firmware, this will block and timeout */ | |
493 | ret = request_firmware(&fw, fw_file, &s->client->dev); | |
494 | if (ret) { | |
495 | dev_err(&s->client->dev, "%s: firmare file '%s' not found\n", | |
496 | KBUILD_MODNAME, fw_file); | |
497 | goto err; | |
498 | } | |
499 | ||
500 | dev_info(&s->client->dev, "%s: downloading firmware from file '%s'\n", | |
501 | KBUILD_MODNAME, fw_file); | |
502 | ||
503 | for (remaining = fw->size; remaining > 0; remaining -= i2c_wr_max) { | |
504 | len = remaining; | |
505 | if (len > i2c_wr_max) | |
506 | len = i2c_wr_max; | |
507 | ||
508 | memcpy(cmd.args, &fw->data[fw->size - remaining], len); | |
509 | cmd.wlen = len; | |
510 | cmd.rlen = 1; | |
511 | ret = si2168_cmd_execute(s, &cmd); | |
512 | if (ret) { | |
513 | dev_err(&s->client->dev, | |
514 | "%s: firmware download failed=%d\n", | |
515 | KBUILD_MODNAME, ret); | |
516 | goto err; | |
517 | } | |
518 | } | |
519 | ||
520 | release_firmware(fw); | |
521 | fw = NULL; | |
522 | ||
523 | cmd.args[0] = 0x01; | |
524 | cmd.args[1] = 0x01; | |
525 | cmd.wlen = 2; | |
526 | cmd.rlen = 1; | |
527 | ret = si2168_cmd_execute(s, &cmd); | |
528 | if (ret) | |
529 | goto err; | |
530 | ||
531 | dev_info(&s->client->dev, "%s: found a '%s' in warm state\n", | |
532 | KBUILD_MODNAME, si2168_ops.info.name); | |
533 | ||
534 | s->active = true; | |
535 | ||
536 | return 0; | |
537 | err: | |
538 | if (fw) | |
539 | release_firmware(fw); | |
540 | ||
541 | dev_dbg(&s->client->dev, "%s: failed=%d\n", __func__, ret); | |
542 | return ret; | |
543 | } | |
544 | ||
545 | static int si2168_sleep(struct dvb_frontend *fe) | |
546 | { | |
547 | struct si2168 *s = fe->demodulator_priv; | |
548 | ||
549 | dev_dbg(&s->client->dev, "%s:\n", __func__); | |
550 | ||
551 | s->active = false; | |
552 | ||
553 | return 0; | |
554 | } | |
555 | ||
556 | static int si2168_get_tune_settings(struct dvb_frontend *fe, | |
557 | struct dvb_frontend_tune_settings *s) | |
558 | { | |
559 | s->min_delay_ms = 900; | |
560 | ||
561 | return 0; | |
562 | } | |
563 | ||
564 | /* | |
565 | * I2C gate logic | |
566 | * We must use unlocked i2c_transfer() here because I2C lock is already taken | |
567 | * by tuner driver. | |
568 | */ | |
569 | static int si2168_select(struct i2c_adapter *adap, void *mux_priv, u32 chan) | |
570 | { | |
571 | struct si2168 *s = mux_priv; | |
572 | int ret; | |
573 | struct i2c_msg gate_open_msg = { | |
574 | .addr = s->client->addr, | |
575 | .flags = 0, | |
576 | .len = 3, | |
577 | .buf = "\xc0\x0d\x01", | |
578 | }; | |
579 | ||
580 | mutex_lock(&s->i2c_mutex); | |
581 | ||
582 | /* open tuner I2C gate */ | |
583 | ret = __i2c_transfer(s->client->adapter, &gate_open_msg, 1); | |
584 | if (ret != 1) { | |
585 | dev_warn(&s->client->dev, "%s: i2c write failed=%d\n", | |
586 | KBUILD_MODNAME, ret); | |
587 | if (ret >= 0) | |
588 | ret = -EREMOTEIO; | |
589 | } else { | |
590 | ret = 0; | |
591 | } | |
592 | ||
593 | return ret; | |
594 | } | |
595 | ||
596 | static int si2168_deselect(struct i2c_adapter *adap, void *mux_priv, u32 chan) | |
597 | { | |
598 | struct si2168 *s = mux_priv; | |
599 | int ret; | |
600 | struct i2c_msg gate_close_msg = { | |
601 | .addr = s->client->addr, | |
602 | .flags = 0, | |
603 | .len = 3, | |
604 | .buf = "\xc0\x0d\x00", | |
605 | }; | |
606 | ||
607 | /* close tuner I2C gate */ | |
608 | ret = __i2c_transfer(s->client->adapter, &gate_close_msg, 1); | |
609 | if (ret != 1) { | |
610 | dev_warn(&s->client->dev, "%s: i2c write failed=%d\n", | |
611 | KBUILD_MODNAME, ret); | |
612 | if (ret >= 0) | |
613 | ret = -EREMOTEIO; | |
614 | } else { | |
615 | ret = 0; | |
616 | } | |
617 | ||
618 | mutex_unlock(&s->i2c_mutex); | |
619 | ||
620 | return ret; | |
621 | } | |
622 | ||
623 | static const struct dvb_frontend_ops si2168_ops = { | |
c790885b | 624 | .delsys = {SYS_DVBT, SYS_DVBT2, SYS_DVBC_ANNEX_A}, |
845f3505 AP |
625 | .info = { |
626 | .name = "Silicon Labs Si2168", | |
627 | .caps = FE_CAN_FEC_1_2 | | |
628 | FE_CAN_FEC_2_3 | | |
629 | FE_CAN_FEC_3_4 | | |
630 | FE_CAN_FEC_5_6 | | |
631 | FE_CAN_FEC_7_8 | | |
632 | FE_CAN_FEC_AUTO | | |
633 | FE_CAN_QPSK | | |
634 | FE_CAN_QAM_16 | | |
635 | FE_CAN_QAM_32 | | |
636 | FE_CAN_QAM_64 | | |
637 | FE_CAN_QAM_128 | | |
638 | FE_CAN_QAM_256 | | |
639 | FE_CAN_QAM_AUTO | | |
640 | FE_CAN_TRANSMISSION_MODE_AUTO | | |
641 | FE_CAN_GUARD_INTERVAL_AUTO | | |
642 | FE_CAN_HIERARCHY_AUTO | | |
643 | FE_CAN_MUTE_TS | | |
644 | FE_CAN_2G_MODULATION | |
645 | }, | |
646 | ||
647 | .get_tune_settings = si2168_get_tune_settings, | |
648 | ||
649 | .init = si2168_init, | |
650 | .sleep = si2168_sleep, | |
651 | ||
652 | .set_frontend = si2168_set_frontend, | |
653 | ||
654 | .read_status = si2168_read_status, | |
655 | }; | |
656 | ||
657 | static int si2168_probe(struct i2c_client *client, | |
658 | const struct i2c_device_id *id) | |
659 | { | |
660 | struct si2168_config *config = client->dev.platform_data; | |
661 | struct si2168 *s; | |
662 | int ret; | |
663 | struct si2168_cmd cmd; | |
664 | ||
665 | dev_dbg(&client->dev, "%s:\n", __func__); | |
666 | ||
667 | s = kzalloc(sizeof(struct si2168), GFP_KERNEL); | |
668 | if (!s) { | |
669 | ret = -ENOMEM; | |
670 | dev_err(&client->dev, "%s: kzalloc() failed\n", KBUILD_MODNAME); | |
671 | goto err; | |
672 | } | |
673 | ||
674 | s->client = client; | |
675 | mutex_init(&s->i2c_mutex); | |
676 | ||
677 | /* check if the demod is there */ | |
678 | cmd.wlen = 0; | |
679 | cmd.rlen = 1; | |
680 | ret = si2168_cmd_execute(s, &cmd); | |
681 | if (ret) | |
682 | goto err; | |
683 | ||
684 | /* create mux i2c adapter for tuner */ | |
685 | s->adapter = i2c_add_mux_adapter(client->adapter, &client->dev, s, | |
686 | 0, 0, 0, si2168_select, si2168_deselect); | |
687 | if (s->adapter == NULL) | |
688 | goto err; | |
689 | ||
690 | /* create dvb_frontend */ | |
691 | memcpy(&s->fe.ops, &si2168_ops, sizeof(struct dvb_frontend_ops)); | |
692 | s->fe.demodulator_priv = s; | |
693 | ||
694 | *config->i2c_adapter = s->adapter; | |
695 | *config->fe = &s->fe; | |
696 | ||
697 | i2c_set_clientdata(client, s); | |
698 | ||
699 | dev_info(&s->client->dev, | |
700 | "%s: Silicon Labs Si2168 successfully attached\n", | |
701 | KBUILD_MODNAME); | |
702 | return 0; | |
703 | err: | |
704 | kfree(s); | |
705 | dev_dbg(&client->dev, "%s: failed=%d\n", __func__, ret); | |
706 | return ret; | |
707 | } | |
708 | ||
709 | static int si2168_remove(struct i2c_client *client) | |
710 | { | |
711 | struct si2168 *s = i2c_get_clientdata(client); | |
712 | ||
713 | dev_dbg(&client->dev, "%s:\n", __func__); | |
714 | ||
715 | i2c_del_mux_adapter(s->adapter); | |
716 | ||
717 | s->fe.ops.release = NULL; | |
718 | s->fe.demodulator_priv = NULL; | |
719 | ||
720 | kfree(s); | |
721 | ||
722 | return 0; | |
723 | } | |
724 | ||
725 | static const struct i2c_device_id si2168_id[] = { | |
726 | {"si2168", 0}, | |
727 | {} | |
728 | }; | |
729 | MODULE_DEVICE_TABLE(i2c, si2168_id); | |
730 | ||
731 | static struct i2c_driver si2168_driver = { | |
732 | .driver = { | |
733 | .owner = THIS_MODULE, | |
734 | .name = "si2168", | |
735 | }, | |
736 | .probe = si2168_probe, | |
737 | .remove = si2168_remove, | |
738 | .id_table = si2168_id, | |
739 | }; | |
740 | ||
741 | module_i2c_driver(si2168_driver); | |
742 | ||
743 | MODULE_AUTHOR("Antti Palosaari <crope@iki.fi>"); | |
744 | MODULE_DESCRIPTION("Silicon Labs Si2168 DVB-T/T2/C demodulator driver"); | |
745 | MODULE_LICENSE("GPL"); | |
746 | MODULE_FIRMWARE(SI2168_FIRMWARE); |