projects / deliverable / linux.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
V4L/DVB (6676): Improve s-code support
[deliverable/linux.git] / drivers / media / video / tuner-xc2028.c
1 /* tuner-xc2028
2 *
3 * Copyright (c) 2007 Mauro Carvalho Chehab (mchehab@infradead.org)
4 *
5 * Copyright (c) 2007 Michel Ludwig (michel.ludwig@gmail.com)
6 * - frontend interface
7 *
8 * This code is placed under the terms of the GNU General Public License v2
9 */
10
11 #include <linux/i2c.h>
12 #include <asm/div64.h>
13 #include <linux/firmware.h>
14 #include <linux/videodev2.h>
15 #include <linux/delay.h>
16 #include <media/tuner.h>
17 #include <linux/mutex.h>
18 #include "tuner-i2c.h"
19 #include "tuner-xc2028.h"
20 #include "tuner-xc2028-types.h"
21
22 #include <linux/dvb/frontend.h>
23 #include "dvb_frontend.h"
24
25
26 #define PREFIX "xc2028"
27
28 static int debug;
29 module_param(debug, int, 0644);
30 MODULE_PARM_DESC(debug, "enable verbose debug messages");
31
32 static char audio_std[8];
33 module_param_string(audio_std, audio_std, sizeof(audio_std), 0);
34 MODULE_PARM_DESC(audio_std,
35 "Audio standard. XC3028 audio decoder explicitly "
36 "needs to know what audio\n"
37 "standard is needed for some video standards with audio A2 or NICAM.\n"
38 "The valid values are:\n"
39 "A2\n"
40 "A2/A\n"
41 "A2/B\n"
42 "NICAM\n"
43 "NICAM/A\n"
44 "NICAM/B\n");
45
46 static LIST_HEAD(xc2028_list);
47 static DEFINE_MUTEX(xc2028_list_mutex);
48
49 /* struct for storing firmware table */
50 struct firmware_description {
51 unsigned int type;
52 v4l2_std_id id;
53 __u16 int_freq;
54 unsigned char *ptr;
55 unsigned int size;
56 };
57
58 struct firmware_properties {
59 unsigned int type;
60 v4l2_std_id id;
61 v4l2_std_id std_req;
62 __u16 int_freq;
63 unsigned int scode_table;
64 int scode_nr;
65 };
66
67 struct xc2028_data {
68 struct list_head xc2028_list;
69 struct tuner_i2c_props i2c_props;
70 int (*tuner_callback) (void *dev,
71 int command, int arg);
72 void *video_dev;
73 int count;
74 __u32 frequency;
75
76 struct firmware_description *firm;
77 int firm_size;
78 __u16 firm_version;
79
80 __u16 hwmodel;
81 __u16 hwvers;
82
83 struct xc2028_ctrl ctrl;
84
85 struct firmware_properties cur_fw;
86
87 struct mutex lock;
88 };
89
90 #define i2c_send(priv, buf, size) ({ \
91 int _rc; \
92 _rc = tuner_i2c_xfer_send(&priv->i2c_props, buf, size); \
93 if (size != _rc) \
94 tuner_info("i2c output error: rc = %d (should be %d)\n",\
95 _rc, (int)size); \
96 _rc; \
97 })
98
99 #define i2c_rcv(priv, buf, size) ({ \
100 int _rc; \
101 _rc = tuner_i2c_xfer_recv(&priv->i2c_props, buf, size); \
102 if (size != _rc) \
103 tuner_err("i2c input error: rc = %d (should be %d)\n", \
104 _rc, (int)size); \
105 _rc; \
106 })
107
108 #define i2c_send_recv(priv, obuf, osize, ibuf, isize) ({ \
109 int _rc; \
110 _rc = tuner_i2c_xfer_send_recv(&priv->i2c_props, obuf, osize, \
111 ibuf, isize); \
112 if (isize != _rc) \
113 tuner_err("i2c input error: rc = %d (should be %d)\n", \
114 _rc, (int)isize); \
115 _rc; \
116 })
117
118 #define send_seq(priv, data...) ({ \
119 static u8 _val[] = data; \
120 int _rc; \
121 if (sizeof(_val) != \
122 (_rc = tuner_i2c_xfer_send(&priv->i2c_props, \
123 _val, sizeof(_val)))) { \
124 tuner_err("Error on line %d: %d\n", __LINE__, _rc); \
125 } else \
126 msleep(10); \
127 _rc; \
128 })
129
130 static unsigned int xc2028_get_reg(struct xc2028_data *priv, u16 reg, u16 *val)
131 {
132 unsigned char buf[2];
133 unsigned char ibuf[2];
134
135 tuner_dbg("%s %04x called\n", __FUNCTION__, reg);
136
137 buf[0] = reg >> 8;
138 buf[1] = (unsigned char) reg;
139
140 if (i2c_send_recv(priv, buf, 2, ibuf, 2) != 2)
141 return -EIO;
142
143 *val = (ibuf[1]) | (ibuf[0] << 8);
144 return 0;
145 }
146
147 void dump_firm_type(unsigned int type)
148 {
149 if (type & BASE)
150 printk("BASE ");
151 if (type & INIT1)
152 printk("INIT1 ");
153 if (type & F8MHZ)
154 printk("F8MHZ ");
155 if (type & MTS)
156 printk("MTS ");
157 if (type & D2620)
158 printk("D2620 ");
159 if (type & D2633)
160 printk("D2633 ");
161 if (type & DTV6)
162 printk("DTV6 ");
163 if (type & QAM)
164 printk("QAM ");
165 if (type & DTV7)
166 printk("DTV7 ");
167 if (type & DTV78)
168 printk("DTV78 ");
169 if (type & DTV8)
170 printk("DTV8 ");
171 if (type & FM)
172 printk("FM ");
173 if (type & INPUT1)
174 printk("INPUT1 ");
175 if (type & LCD)
176 printk("LCD ");
177 if (type & NOGD)
178 printk("NOGD ");
179 if (type & MONO)
180 printk("MONO ");
181 if (type & ATSC)
182 printk("ATSC ");
183 if (type & IF)
184 printk("IF ");
185 if (type & LG60)
186 printk("LG60 ");
187 if (type & ATI638)
188 printk("ATI638 ");
189 if (type & OREN538)
190 printk("OREN538 ");
191 if (type & OREN36)
192 printk("OREN36 ");
193 if (type & TOYOTA388)
194 printk("TOYOTA388 ");
195 if (type & TOYOTA794)
196 printk("TOYOTA794 ");
197 if (type & DIBCOM52)
198 printk("DIBCOM52 ");
199 if (type & ZARLINK456)
200 printk("ZARLINK456 ");
201 if (type & CHINA)
202 printk("CHINA ");
203 if (type & F6MHZ)
204 printk("F6MHZ ");
205 if (type & INPUT2)
206 printk("INPUT2 ");
207 if (type & SCODE)
208 printk("SCODE ");
209 }
210
211 static v4l2_std_id parse_audio_std_option(void)
212 {
213 if (strcasecmp(audio_std, "A2") == 0)
214 return V4L2_STD_A2;
215 if (strcasecmp(audio_std, "A2/A") == 0)
216 return V4L2_STD_A2_A;
217 if (strcasecmp(audio_std, "A2/B") == 0)
218 return V4L2_STD_A2_B;
219 if (strcasecmp(audio_std, "NICAM") == 0)
220 return V4L2_STD_NICAM;
221 if (strcasecmp(audio_std, "NICAM/A") == 0)
222 return V4L2_STD_NICAM_A;
223 if (strcasecmp(audio_std, "NICAM/B") == 0)
224 return V4L2_STD_NICAM_B;
225
226 return 0;
227 }
228
229 static void free_firmware(struct xc2028_data *priv)
230 {
231 int i;
232
233 if (!priv->firm)
234 return;
235
236 for (i = 0; i < priv->firm_size; i++)
237 kfree(priv->firm[i].ptr);
238
239 kfree(priv->firm);
240
241 priv->firm = NULL;
242 priv->firm_size = 0;
243
244 memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
245 }
246
247 static int load_all_firmwares(struct dvb_frontend *fe)
248 {
249 struct xc2028_data *priv = fe->tuner_priv;
250 const struct firmware *fw = NULL;
251 unsigned char *p, *endp;
252 int rc = 0;
253 int n, n_array;
254 char name[33];
255
256 tuner_dbg("%s called\n", __FUNCTION__);
257
258 tuner_dbg("Reading firmware %s\n", priv->ctrl.fname);
259 rc = request_firmware(&fw, priv->ctrl.fname,
260 &priv->i2c_props.adap->dev);
261 if (rc < 0) {
262 if (rc == -ENOENT)
263 tuner_err("Error: firmware %s not found.\n",
264 priv->ctrl.fname);
265 else
266 tuner_err("Error %d while requesting firmware %s \n",
267 rc, priv->ctrl.fname);
268
269 return rc;
270 }
271 p = fw->data;
272 endp = p + fw->size;
273
274 if (fw->size < sizeof(name) - 1 + 2 + 2) {
275 tuner_err("Error: firmware file %s has invalid size!\n",
276 priv->ctrl.fname);
277 goto corrupt;
278 }
279
280 memcpy(name, p, sizeof(name) - 1);
281 name[sizeof(name) - 1] = 0;
282 p += sizeof(name) - 1;
283
284 priv->firm_version = le16_to_cpu(*(__u16 *) p);
285 p += 2;
286
287 n_array = le16_to_cpu(*(__u16 *) p);
288 p += 2;
289
290 tuner_info("Loading %d firmware images from %s, type: %s, ver %d.%d\n",
291 n_array, priv->ctrl.fname, name,
292 priv->firm_version >> 8, priv->firm_version & 0xff);
293
294 priv->firm = kzalloc(sizeof(*priv->firm) * n_array, GFP_KERNEL);
295 if (priv->firm == NULL) {
296 tuner_err("Not enough memory to load firmware file.\n");
297 rc = -ENOMEM;
298 goto err;
299 }
300 priv->firm_size = n_array;
301
302 n = -1;
303 while (p < endp) {
304 __u32 type, size;
305 v4l2_std_id id;
306 __u16 int_freq = 0;
307
308 n++;
309 if (n >= n_array) {
310 tuner_err("More firmware images in file than "
311 "were expected!\n");
312 goto corrupt;
313 }
314
315 /* Checks if there's enough bytes to read */
316 if (p + sizeof(type) + sizeof(id) + sizeof(size) > endp) {
317 tuner_err("Firmware header is incomplete!\n");
318 goto corrupt;
319 }
320
321 type = le32_to_cpu(*(__u32 *) p);
322 p += sizeof(type);
323
324 id = le64_to_cpu(*(v4l2_std_id *) p);
325 p += sizeof(id);
326
327 if (type & HAS_IF) {
328 int_freq = le16_to_cpu(*(__u16 *) p);
329 p += sizeof(int_freq);
330 }
331
332 size = le32_to_cpu(*(__u32 *) p);
333 p += sizeof(size);
334
335 if ((!size) || (size + p > endp)) {
336 tuner_err("Firmware type ");
337 dump_firm_type(type);
338 printk("(%x), id %llx is corrupted "
339 "(size=%d, expected %d)\n",
340 type, (unsigned long long)id,
341 (unsigned)(endp - p), size);
342 goto corrupt;
343 }
344
345 priv->firm[n].ptr = kzalloc(size, GFP_KERNEL);
346 if (priv->firm[n].ptr == NULL) {
347 tuner_err("Not enough memory to load firmware file.\n");
348 rc = -ENOMEM;
349 goto err;
350 }
351 tuner_dbg("Reading firmware type ");
352 if (debug) {
353 dump_firm_type(type);
354 printk("(%x), id %llx, size=%d.\n",
355 type, (unsigned long long)id, size);
356 }
357
358 memcpy(priv->firm[n].ptr, p, size);
359 priv->firm[n].type = type;
360 priv->firm[n].id = id;
361 priv->firm[n].size = size;
362 priv->firm[n].int_freq = int_freq;
363
364 p += size;
365 }
366
367 if (n + 1 != priv->firm_size) {
368 tuner_err("Firmware file is incomplete!\n");
369 goto corrupt;
370 }
371
372 goto done;
373
374 corrupt:
375 rc = -EINVAL;
376 tuner_err("Error: firmware file is corrupted!\n");
377
378 err:
379 tuner_info("Releasing partially loaded firmware file.\n");
380 free_firmware(priv);
381
382 done:
383 release_firmware(fw);
384 if (rc == 0)
385 tuner_dbg("Firmware files loaded.\n");
386
387 return rc;
388 }
389
390 static int seek_firmware(struct dvb_frontend *fe, unsigned int type,
391 v4l2_std_id *id)
392 {
393 struct xc2028_data *priv = fe->tuner_priv;
394 int i, best_i = -1, best_nr_matches = 0;
395
396 tuner_dbg("%s called, want type=", __FUNCTION__);
397 if (debug) {
398 dump_firm_type(type);
399 printk("(%x), id %016llx.\n", type, (unsigned long long)*id);
400 }
401
402 if (!priv->firm) {
403 tuner_err("Error! firmware not loaded\n");
404 return -EINVAL;
405 }
406
407 if (((type & ~SCODE) == 0) && (*id == 0))
408 *id = V4L2_STD_PAL;
409
410 if (type & BASE)
411 type &= BASE_TYPES;
412 else if (type & SCODE)
413 type &= SCODE_TYPES;
414 else if (type & DTV_TYPES)
415 type &= DTV_TYPES;
416 else if (type & STD_SPECIFIC_TYPES)
417 type &= STD_SPECIFIC_TYPES;
418
419 /* Seek for exact match */
420 for (i = 0; i < priv->firm_size; i++) {
421 if ((type == priv->firm[i].type) && (*id == priv->firm[i].id))
422 goto found;
423 }
424
425 /* Seek for generic video standard match */
426 for (i = 0; i < priv->firm_size; i++) {
427 v4l2_std_id match_mask;
428 int nr_matches;
429
430 if (type != priv->firm[i].type)
431 continue;
432
433 match_mask = *id & priv->firm[i].id;
434 if (!match_mask)
435 continue;
436
437 if ((*id & match_mask) == *id)
438 goto found; /* Supports all the requested standards */
439
440 nr_matches = hweight64(match_mask);
441 if (nr_matches > best_nr_matches) {
442 best_nr_matches = nr_matches;
443 best_i = i;
444 }
445 }
446
447 if (best_nr_matches > 0) {
448 tuner_dbg("Selecting best matching firmware (%d bits) for "
449 "type=", best_nr_matches);
450 dump_firm_type(type);
451 printk("(%x), id %016llx:\n", type, (unsigned long long)*id);
452 i = best_i;
453 goto found;
454 }
455
456 /*FIXME: Would make sense to seek for type "hint" match ? */
457
458 i = -ENOENT;
459 goto ret;
460
461 found:
462 *id = priv->firm[i].id;
463
464 ret:
465 tuner_dbg("%s firmware for type=", (i < 0) ? "Can't find" : "Found");
466 if (debug) {
467 dump_firm_type(type);
468 printk("(%x), id %016llx.\n", type, (unsigned long long)*id);
469 }
470 return i;
471 }
472
473 static int load_firmware(struct dvb_frontend *fe, unsigned int type,
474 v4l2_std_id *id)
475 {
476 struct xc2028_data *priv = fe->tuner_priv;
477 int pos, rc;
478 unsigned char *p, *endp, buf[priv->ctrl.max_len];
479
480 tuner_dbg("%s called\n", __FUNCTION__);
481
482 pos = seek_firmware(fe, type, id);
483 if (pos < 0)
484 return pos;
485
486 tuner_info("Loading firmware for type=");
487 dump_firm_type(priv->firm[pos].type);
488 printk("(%x), id %016llx.\n", priv->firm[pos].type,
489 (unsigned long long)*id);
490
491 p = priv->firm[pos].ptr;
492 endp = p + priv->firm[pos].size;
493
494 while (p < endp) {
495 __u16 size;
496
497 /* Checks if there's enough bytes to read */
498 if (p + sizeof(size) > endp) {
499 tuner_err("Firmware chunk size is wrong\n");
500 return -EINVAL;
501 }
502
503 size = le16_to_cpu(*(__u16 *) p);
504 p += sizeof(size);
505
506 if (size == 0xffff)
507 return 0;
508
509 if (!size) {
510 /* Special callback command received */
511 rc = priv->tuner_callback(priv->video_dev,
512 XC2028_TUNER_RESET, 0);
513 if (rc < 0) {
514 tuner_err("Error at RESET code %d\n",
515 (*p) & 0x7f);
516 return -EINVAL;
517 }
518 continue;
519 }
520 if (size >= 0xff00) {
521 switch (size) {
522 case 0xff00:
523 rc = priv->tuner_callback(priv->video_dev,
524 XC2028_RESET_CLK, 0);
525 if (rc < 0) {
526 tuner_err("Error at RESET code %d\n",
527 (*p) & 0x7f);
528 return -EINVAL;
529 }
530 break;
531 default:
532 tuner_info("Invalid RESET code %d\n",
533 size & 0x7f);
534 return -EINVAL;
535
536 }
537 continue;
538 }
539
540 /* Checks for a sleep command */
541 if (size & 0x8000) {
542 msleep(size & 0x7fff);
543 continue;
544 }
545
546 if ((size + p > endp)) {
547 tuner_err("missing bytes: need %d, have %d\n",
548 size, (int)(endp - p));
549 return -EINVAL;
550 }
551
552 buf[0] = *p;
553 p++;
554 size--;
555
556 /* Sends message chunks */
557 while (size > 0) {
558 int len = (size < priv->ctrl.max_len - 1) ?
559 size : priv->ctrl.max_len - 1;
560
561 memcpy(buf + 1, p, len);
562
563 rc = i2c_send(priv, buf, len + 1);
564 if (rc < 0) {
565 tuner_err("%d returned from send\n", rc);
566 return -EINVAL;
567 }
568
569 p += len;
570 size -= len;
571 }
572 }
573 return 0;
574 }
575
576 static int load_scode(struct dvb_frontend *fe, unsigned int type,
577 v4l2_std_id *id, __u16 int_freq, int scode)
578 {
579 struct xc2028_data *priv = fe->tuner_priv;
580 int pos, rc;
581 unsigned char *p;
582
583 tuner_dbg("%s called\n", __FUNCTION__);
584
585 if (!int_freq) {
586 pos = seek_firmware(fe, type, id);
587 if (pos < 0)
588 return pos;
589 } else {
590 for (pos = 0; pos < priv->firm_size; pos++) {
591 if ((priv->firm[pos].int_freq == int_freq) &&
592 (type & HAS_IF))
593 break;
594 }
595 if (pos == priv->firm_size)
596 return -ENOENT;
597 }
598
599 p = priv->firm[pos].ptr;
600
601 if (type & HAS_IF) {
602 if (priv->firm[pos].size != 12 * 16 || scode >= 16)
603 return -EINVAL;
604 p += 12 * scode;
605 } else {
606 /* 16 SCODE entries per file; each SCODE entry is 12 bytes and
607 * has a 2-byte size header in the firmware format. */
608 if (priv->firm[pos].size != 14 * 16 || scode >= 16 ||
609 le16_to_cpu(*(__u16 *)(p + 14 * scode)) != 12)
610 return -EINVAL;
611 p += 14 * scode + 2;
612 }
613
614 tuner_info("Loading SCODE for type=");
615 dump_firm_type(priv->firm[pos].type);
616 printk("(%x), id %016llx.\n", priv->firm[pos].type,
617 (unsigned long long)*id);
618
619 if (priv->firm_version < 0x0202)
620 rc = send_seq(priv, {0x20, 0x00, 0x00, 0x00});
621 else
622 rc = send_seq(priv, {0xa0, 0x00, 0x00, 0x00});
623 if (rc < 0)
624 return -EIO;
625
626 rc = i2c_send(priv, p, 12);
627 if (rc < 0)
628 return -EIO;
629
630 rc = send_seq(priv, {0x00, 0x8c});
631 if (rc < 0)
632 return -EIO;
633
634 return 0;
635 }
636
637 static int check_firmware(struct dvb_frontend *fe, unsigned int type,
638 v4l2_std_id std, __u16 int_freq)
639 {
640 struct xc2028_data *priv = fe->tuner_priv;
641 struct firmware_properties new_fw;
642 int rc = 0, is_retry = 0;
643 u16 version, hwmodel;
644 v4l2_std_id std0;
645
646 tuner_dbg("%s called\n", __FUNCTION__);
647
648 if (!priv->firm) {
649 if (!priv->ctrl.fname) {
650 tuner_info("xc2028/3028 firmware name not set!\n");
651 return -EINVAL;
652 }
653
654 rc = load_all_firmwares(fe);
655 if (rc < 0)
656 return rc;
657 }
658
659 if (priv->ctrl.mts)
660 type |= MTS;
661
662 retry:
663 new_fw.type = type;
664 new_fw.id = std;
665 new_fw.std_req = std;
666 new_fw.scode_table = SCODE | priv->ctrl.scode_table;
667 new_fw.scode_nr = 0;
668 new_fw.int_freq = int_freq;
669
670 tuner_dbg("checking firmware, user requested type=");
671 if (debug) {
672 dump_firm_type(new_fw.type);
673 printk("(%x), id %016llx, scode_tbl ", new_fw.type,
674 (unsigned long long)new_fw.std_req);
675 dump_firm_type(priv->ctrl.scode_table);
676 printk("(%x), scode_nr %d\n", priv->ctrl.scode_table,
677 new_fw.scode_nr);
678 }
679
680 /* No need to reload base firmware if it matches */
681 if (((BASE | new_fw.type) & BASE_TYPES) ==
682 (priv->cur_fw.type & BASE_TYPES)) {
683 tuner_dbg("BASE firmware not changed.\n");
684 goto skip_base;
685 }
686
687 /* Updating BASE - forget about all currently loaded firmware */
688 memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
689
690 /* Reset is needed before loading firmware */
691 rc = priv->tuner_callback(priv->video_dev,
692 XC2028_TUNER_RESET, 0);
693 if (rc < 0)
694 goto fail;
695
696 /* BASE firmwares are all std0 */
697 std0 = 0;
698 rc = load_firmware(fe, BASE | new_fw.type, &std0);
699 if (rc < 0) {
700 tuner_err("Error %d while loading base firmware\n",
701 rc);
702 goto fail;
703 }
704
705 /* Load INIT1, if needed */
706 tuner_dbg("Load init1 firmware, if exists\n");
707
708 rc = load_firmware(fe, BASE | INIT1 | new_fw.type, &std0);
709 if (rc == -ENOENT)
710 rc = load_firmware(fe, (BASE | INIT1 | new_fw.type) & ~F8MHZ,
711 &std0);
712 if (rc < 0 && rc != -ENOENT) {
713 tuner_err("Error %d while loading init1 firmware\n",
714 rc);
715 goto fail;
716 }
717
718 skip_base:
719 /*
720 * No need to reload standard specific firmware if base firmware
721 * was not reloaded and requested video standards have not changed.
722 */
723 if (priv->cur_fw.type == (BASE | new_fw.type) &&
724 priv->cur_fw.std_req == std) {
725 tuner_dbg("Std-specific firmware already loaded.\n");
726 goto skip_std_specific;
727 }
728
729 /* Reloading std-specific firmware forces a SCODE update */
730 priv->cur_fw.scode_table = 0;
731
732 rc = load_firmware(fe, new_fw.type, &new_fw.id);
733 if (rc == -ENOENT)
734 rc = load_firmware(fe, new_fw.type & ~F8MHZ, &new_fw.id);
735
736 if (rc < 0)
737 goto fail;
738
739 skip_std_specific:
740 if (priv->cur_fw.scode_table == new_fw.scode_table &&
741 priv->cur_fw.scode_nr == new_fw.scode_nr) {
742 tuner_dbg("SCODE firmware already loaded.\n");
743 goto check_device;
744 }
745
746 /* Load SCODE firmware, if exists */
747 tuner_dbg("Trying to load scode %d\n", new_fw.scode_nr);
748
749 rc = load_scode(fe, new_fw.type | new_fw.scode_table, &new_fw.id,
750 new_fw.int_freq, new_fw.scode_nr);
751
752 check_device:
753 if (xc2028_get_reg(priv, 0x0004, &version) < 0 ||
754 xc2028_get_reg(priv, 0x0008, &hwmodel) < 0) {
755 tuner_err("Unable to read tuner registers.\n");
756 goto fail;
757 }
758
759 tuner_info("Device is Xceive %d version %d.%d, "
760 "firmware version %d.%d\n",
761 hwmodel, (version & 0xf000) >> 12, (version & 0xf00) >> 8,
762 (version & 0xf0) >> 4, version & 0xf);
763
764 /* Check firmware version against what we downloaded. */
765 if (priv->firm_version != ((version & 0xf0) << 4 | (version & 0x0f))) {
766 tuner_err("Incorrect readback of firmware version.\n");
767 goto fail;
768 }
769
770 /* Check that the tuner hardware model remains consistent over time. */
771 if (priv->hwmodel == 0 && (hwmodel == 2028 || hwmodel == 3028)) {
772 priv->hwmodel = hwmodel;
773 priv->hwvers = version & 0xff00;
774 } else if (priv->hwmodel == 0 || priv->hwmodel != hwmodel ||
775 priv->hwvers != (version & 0xff00)) {
776 tuner_err("Read invalid device hardware information - tuner "
777 "hung?\n");
778 goto fail;
779 }
780
781 memcpy(&priv->cur_fw, &new_fw, sizeof(priv->cur_fw));
782
783 /*
784 * By setting BASE in cur_fw.type only after successfully loading all
785 * firmwares, we can:
786 * 1. Identify that BASE firmware with type=0 has been loaded;
787 * 2. Tell whether BASE firmware was just changed the next time through.
788 */
789 priv->cur_fw.type |= BASE;
790
791 return 0;
792
793 fail:
794 memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
795 if (!is_retry) {
796 msleep(50);
797 is_retry = 1;
798 tuner_dbg("Retrying firmware load\n");
799 goto retry;
800 }
801
802 if (rc == -ENOENT)
803 rc = -EINVAL;
804 return rc;
805 }
806
807 static int xc2028_signal(struct dvb_frontend *fe, u16 *strength)
808 {
809 struct xc2028_data *priv = fe->tuner_priv;
810 u16 frq_lock, signal = 0;
811 int rc;
812
813 tuner_dbg("%s called\n", __FUNCTION__);
814
815 mutex_lock(&priv->lock);
816
817 /* Sync Lock Indicator */
818 rc = xc2028_get_reg(priv, 0x0002, &frq_lock);
819 if (rc < 0 || frq_lock == 0)
820 goto ret;
821
822 /* Frequency is locked. Return signal quality */
823
824 /* Get SNR of the video signal */
825 rc = xc2028_get_reg(priv, 0x0040, &signal);
826 if (rc < 0)
827 signal = -frq_lock;
828
829 ret:
830 mutex_unlock(&priv->lock);
831
832 *strength = signal;
833
834 return rc;
835 }
836
837 #define DIV 15625
838
839 static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */,
840 enum tuner_mode new_mode,
841 unsigned int type,
842 v4l2_std_id std,
843 u16 int_freq)
844 {
845 struct xc2028_data *priv = fe->tuner_priv;
846 int rc = -EINVAL;
847 unsigned char buf[4];
848 u32 div, offset = 0;
849
850 tuner_dbg("%s called\n", __FUNCTION__);
851
852 mutex_lock(&priv->lock);
853
854 tuner_dbg("should set frequency %d kHz\n", freq / 1000);
855
856 if (check_firmware(fe, type, std, int_freq) < 0)
857 goto ret;
858
859 /* On some cases xc2028 can disable video output, if
860 * very weak signals are received. By sending a soft
861 * reset, this is re-enabled. So, it is better to always
862 * send a soft reset before changing channels, to be sure
863 * that xc2028 will be in a safe state.
864 * Maybe this might also be needed for DTV.
865 */
866 if (new_mode == T_ANALOG_TV) {
867 rc = send_seq(priv, {0x00, 0x00});
868 } else {
869 offset = 2750000;
870 if (priv->cur_fw.type & DTV7)
871 offset -= 500000;
872 }
873
874 div = (freq - offset + DIV / 2) / DIV;
875
876 /* CMD= Set frequency */
877 if (priv->firm_version < 0x0202)
878 rc = send_seq(priv, {0x00, 0x02, 0x00, 0x00});
879 else
880 rc = send_seq(priv, {0x80, 0x02, 0x00, 0x00});
881 if (rc < 0)
882 goto ret;
883
884 rc = priv->tuner_callback(priv->video_dev, XC2028_RESET_CLK, 1);
885 if (rc < 0)
886 goto ret;
887
888 msleep(10);
889
890 buf[0] = 0xff & (div >> 24);
891 buf[1] = 0xff & (div >> 16);
892 buf[2] = 0xff & (div >> 8);
893 buf[3] = 0xff & (div);
894
895 rc = i2c_send(priv, buf, sizeof(buf));
896 if (rc < 0)
897 goto ret;
898 msleep(100);
899
900 priv->frequency = freq;
901
902 tuner_dbg("divisor= %02x %02x %02x %02x (freq=%d.%03d)\n",
903 buf[0], buf[1], buf[2], buf[3],
904 freq / 1000000, (freq % 1000000) / 1000);
905
906 rc = 0;
907
908 ret:
909 mutex_unlock(&priv->lock);
910
911 return rc;
912 }
913
914 static int xc2028_set_analog_freq(struct dvb_frontend *fe,
915 struct analog_parameters *p)
916 {
917 struct xc2028_data *priv = fe->tuner_priv;
918 unsigned int type=0;
919
920 tuner_dbg("%s called\n", __FUNCTION__);
921
922 if (p->mode == V4L2_TUNER_RADIO) {
923 type |= FM;
924 if (priv->ctrl.input1)
925 type |= INPUT1;
926 return generic_set_freq(fe, (625l * p->frequency) / 10,
927 T_ANALOG_TV, type, 0, 0);
928 }
929
930 /* if std is not defined, choose one */
931 if (!p->std)
932 p->std = V4L2_STD_MN;
933
934 /* PAL/M, PAL/N, PAL/Nc and NTSC variants should use 6MHz firmware */
935 if (!(p->std & V4L2_STD_MN))
936 type |= F8MHZ;
937
938 /* Add audio hack to std mask */
939 p->std |= parse_audio_std_option();
940
941 return generic_set_freq(fe, 62500l * p->frequency,
942 T_ANALOG_TV, type, p->std, 0);
943 }
944
945 static int xc2028_set_params(struct dvb_frontend *fe,
946 struct dvb_frontend_parameters *p)
947 {
948 struct xc2028_data *priv = fe->tuner_priv;
949 unsigned int type=0;
950 fe_bandwidth_t bw = BANDWIDTH_8_MHZ;
951
952 tuner_dbg("%s called\n", __FUNCTION__);
953
954 if (priv->ctrl.d2633)
955 type |= D2633;
956 else
957 type |= D2620;
958
959 switch(fe->ops.info.type) {
960 case FE_QPSK:
961 break;
962 case FE_OFDM:
963 bw = p->u.ofdm.bandwidth;
964 break;
965 case FE_QAM:
966 bw = BANDWIDTH_6_MHZ;
967 type |= QAM;
968 break;
969 case FE_ATSC:
970 bw = BANDWIDTH_6_MHZ;
971 type |= ATSC| D2633;
972 break;
973 }
974
975 bw = p->u.ofdm.bandwidth;
976
977 /* FIXME:
978 There are two Scodes that will never be selected:
979 DTV78 ZARLINK456, DTV78 DIBCOM52
980 When it should opt for DTV78 instead of DTV7 or DTV8?
981 */
982 switch (bw) {
983 case BANDWIDTH_8_MHZ:
984 type |= DTV8 | F8MHZ;
985 break;
986 case BANDWIDTH_7_MHZ:
987 type |= DTV7 | F8MHZ;
988 break;
989 case BANDWIDTH_6_MHZ:
990 type |= DTV6 ;
991 break;
992 default:
993 tuner_err("error: bandwidth not supported.\n");
994 };
995
996 /* All S-code tables need a 200kHz shift */
997 if (priv->ctrl.demod)
998 priv->ctrl.demod += 200;
999
1000 return generic_set_freq(fe, p->frequency,
1001 T_DIGITAL_TV, type, 0, priv->ctrl.demod);
1002 }
1003
1004 static int xc2028_sleep(struct dvb_frontend *fe)
1005 {
1006 struct xc2028_data *priv = fe->tuner_priv;
1007 int rc = 0;
1008
1009 tuner_dbg("%s called\n", __FUNCTION__);
1010
1011 mutex_lock(&priv->lock);
1012
1013 if (priv->firm_version < 0x0202)
1014 rc = send_seq(priv, {0x00, 0x08, 0x00, 0x00});
1015 else
1016 rc = send_seq(priv, {0x80, 0x08, 0x00, 0x00});
1017
1018 priv->cur_fw.type = 0; /* need firmware reload */
1019
1020 mutex_unlock(&priv->lock);
1021
1022 return rc;
1023 }
1024
1025
1026 static int xc2028_dvb_release(struct dvb_frontend *fe)
1027 {
1028 struct xc2028_data *priv = fe->tuner_priv;
1029
1030 tuner_dbg("%s called\n", __FUNCTION__);
1031
1032 mutex_lock(&xc2028_list_mutex);
1033
1034 priv->count--;
1035
1036 if (!priv->count) {
1037 list_del(&priv->xc2028_list);
1038
1039 kfree(priv->ctrl.fname);
1040
1041 free_firmware(priv);
1042 kfree(priv);
1043 fe->tuner_priv = NULL;
1044 }
1045
1046 mutex_unlock(&xc2028_list_mutex);
1047
1048 return 0;
1049 }
1050
1051 static int xc2028_get_frequency(struct dvb_frontend *fe, u32 *frequency)
1052 {
1053 struct xc2028_data *priv = fe->tuner_priv;
1054
1055 tuner_dbg("%s called\n", __FUNCTION__);
1056
1057 *frequency = priv->frequency;
1058
1059 return 0;
1060 }
1061
1062 static int xc2028_set_config(struct dvb_frontend *fe, void *priv_cfg)
1063 {
1064 struct xc2028_data *priv = fe->tuner_priv;
1065 struct xc2028_ctrl *p = priv_cfg;
1066 int rc = 0;
1067
1068 tuner_dbg("%s called\n", __FUNCTION__);
1069
1070 mutex_lock(&priv->lock);
1071
1072 kfree(priv->ctrl.fname);
1073 free_firmware(priv);
1074
1075 memcpy(&priv->ctrl, p, sizeof(priv->ctrl));
1076 priv->ctrl.fname = NULL;
1077
1078 if (p->fname) {
1079 priv->ctrl.fname = kstrdup(p->fname, GFP_KERNEL);
1080 if (priv->ctrl.fname == NULL)
1081 rc = -ENOMEM;
1082 }
1083
1084 if (priv->ctrl.max_len < 9)
1085 priv->ctrl.max_len = 13;
1086
1087 mutex_unlock(&priv->lock);
1088
1089 return rc;
1090 }
1091
1092 static const struct dvb_tuner_ops xc2028_dvb_tuner_ops = {
1093 .info = {
1094 .name = "Xceive XC3028",
1095 .frequency_min = 42000000,
1096 .frequency_max = 864000000,
1097 .frequency_step = 50000,
1098 },
1099
1100 .set_config = xc2028_set_config,
1101 .set_analog_params = xc2028_set_analog_freq,
1102 .release = xc2028_dvb_release,
1103 .get_frequency = xc2028_get_frequency,
1104 .get_rf_strength = xc2028_signal,
1105 .set_params = xc2028_set_params,
1106 .sleep = xc2028_sleep,
1107
1108 };
1109
1110 void *xc2028_attach(struct dvb_frontend *fe, struct xc2028_config *cfg)
1111 {
1112 struct xc2028_data *priv;
1113 void *video_dev;
1114
1115 if (debug)
1116 printk(KERN_DEBUG PREFIX ": Xcv2028/3028 init called!\n");
1117
1118 if (NULL == cfg || NULL == cfg->video_dev)
1119 return NULL;
1120
1121 if (!fe) {
1122 printk(KERN_ERR PREFIX ": No frontend!\n");
1123 return NULL;
1124 }
1125
1126 video_dev = cfg->video_dev;
1127
1128 mutex_lock(&xc2028_list_mutex);
1129
1130 list_for_each_entry(priv, &xc2028_list, xc2028_list) {
1131 if (priv->video_dev == cfg->video_dev) {
1132 video_dev = NULL;
1133 break;
1134 }
1135 }
1136
1137 if (video_dev) {
1138 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
1139 if (priv == NULL) {
1140 mutex_unlock(&xc2028_list_mutex);
1141 return NULL;
1142 }
1143
1144 priv->i2c_props.addr = cfg->i2c_addr;
1145 priv->i2c_props.adap = cfg->i2c_adap;
1146 priv->video_dev = video_dev;
1147 priv->tuner_callback = cfg->callback;
1148 priv->ctrl.max_len = 13;
1149
1150 mutex_init(&priv->lock);
1151
1152 list_add_tail(&priv->xc2028_list, &xc2028_list);
1153 }
1154
1155 fe->tuner_priv = priv;
1156 priv->count++;
1157
1158 memcpy(&fe->ops.tuner_ops, &xc2028_dvb_tuner_ops,
1159 sizeof(xc2028_dvb_tuner_ops));
1160
1161 tuner_info("type set to %s\n", "XCeive xc2028/xc3028 tuner");
1162
1163 if (cfg->ctrl)
1164 xc2028_set_config(fe, cfg->ctrl);
1165
1166 mutex_unlock(&xc2028_list_mutex);
1167
1168 return fe;
1169 }
1170
1171 EXPORT_SYMBOL(xc2028_attach);
1172
1173 MODULE_DESCRIPTION("Xceive xc2028/xc3028 tuner driver");
1174 MODULE_AUTHOR("Michel Ludwig <michel.ludwig@gmail.com>");
1175 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
1176 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
This page took 0.073136 seconds and 5 git commands to generate.