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Merge branch 'sbp2-spindown' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee139...
[deliverable/linux.git] / drivers / media / common / tuners / tuner-xc2028.c
1 /* tuner-xc2028
2 *
3 * Copyright (c) 2007-2008 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 static int debug;
27 module_param(debug, int, 0644);
28 MODULE_PARM_DESC(debug, "enable verbose debug messages");
29
30 static char audio_std[8];
31 module_param_string(audio_std, audio_std, sizeof(audio_std), 0);
32 MODULE_PARM_DESC(audio_std,
33 "Audio standard. XC3028 audio decoder explicitly "
34 "needs to know what audio\n"
35 "standard is needed for some video standards with audio A2 or NICAM.\n"
36 "The valid values are:\n"
37 "A2\n"
38 "A2/A\n"
39 "A2/B\n"
40 "NICAM\n"
41 "NICAM/A\n"
42 "NICAM/B\n");
43
44 static char firmware_name[FIRMWARE_NAME_MAX];
45 module_param_string(firmware_name, firmware_name, sizeof(firmware_name), 0);
46 MODULE_PARM_DESC(firmware_name, "Firmware file name. Allows overriding the "
47 "default firmware name\n");
48
49 static LIST_HEAD(hybrid_tuner_instance_list);
50 static DEFINE_MUTEX(xc2028_list_mutex);
51
52 /* struct for storing firmware table */
53 struct firmware_description {
54 unsigned int type;
55 v4l2_std_id id;
56 __u16 int_freq;
57 unsigned char *ptr;
58 unsigned int size;
59 };
60
61 struct firmware_properties {
62 unsigned int type;
63 v4l2_std_id id;
64 v4l2_std_id std_req;
65 __u16 int_freq;
66 unsigned int scode_table;
67 int scode_nr;
68 };
69
70 struct xc2028_data {
71 struct list_head hybrid_tuner_instance_list;
72 struct tuner_i2c_props i2c_props;
73 int (*tuner_callback) (void *dev,
74 int command, int arg);
75 void *video_dev;
76 __u32 frequency;
77
78 struct firmware_description *firm;
79 int firm_size;
80 __u16 firm_version;
81
82 __u16 hwmodel;
83 __u16 hwvers;
84
85 struct xc2028_ctrl ctrl;
86
87 struct firmware_properties cur_fw;
88
89 struct mutex lock;
90 };
91
92 #define i2c_send(priv, buf, size) ({ \
93 int _rc; \
94 _rc = tuner_i2c_xfer_send(&priv->i2c_props, buf, size); \
95 if (size != _rc) \
96 tuner_info("i2c output error: rc = %d (should be %d)\n",\
97 _rc, (int)size); \
98 _rc; \
99 })
100
101 #define i2c_rcv(priv, buf, size) ({ \
102 int _rc; \
103 _rc = tuner_i2c_xfer_recv(&priv->i2c_props, buf, size); \
104 if (size != _rc) \
105 tuner_err("i2c input error: rc = %d (should be %d)\n", \
106 _rc, (int)size); \
107 _rc; \
108 })
109
110 #define i2c_send_recv(priv, obuf, osize, ibuf, isize) ({ \
111 int _rc; \
112 _rc = tuner_i2c_xfer_send_recv(&priv->i2c_props, obuf, osize, \
113 ibuf, isize); \
114 if (isize != _rc) \
115 tuner_err("i2c input error: rc = %d (should be %d)\n", \
116 _rc, (int)isize); \
117 _rc; \
118 })
119
120 #define send_seq(priv, data...) ({ \
121 static u8 _val[] = data; \
122 int _rc; \
123 if (sizeof(_val) != \
124 (_rc = tuner_i2c_xfer_send(&priv->i2c_props, \
125 _val, sizeof(_val)))) { \
126 tuner_err("Error on line %d: %d\n", __LINE__, _rc); \
127 } else \
128 msleep(10); \
129 _rc; \
130 })
131
132 static int xc2028_get_reg(struct xc2028_data *priv, u16 reg, u16 *val)
133 {
134 unsigned char buf[2];
135 unsigned char ibuf[2];
136
137 tuner_dbg("%s %04x called\n", __func__, reg);
138
139 buf[0] = reg >> 8;
140 buf[1] = (unsigned char) reg;
141
142 if (i2c_send_recv(priv, buf, 2, ibuf, 2) != 2)
143 return -EIO;
144
145 *val = (ibuf[1]) | (ibuf[0] << 8);
146 return 0;
147 }
148
149 #define dump_firm_type(t) dump_firm_type_and_int_freq(t, 0)
150 static void dump_firm_type_and_int_freq(unsigned int type, u16 int_freq)
151 {
152 if (type & BASE)
153 printk("BASE ");
154 if (type & INIT1)
155 printk("INIT1 ");
156 if (type & F8MHZ)
157 printk("F8MHZ ");
158 if (type & MTS)
159 printk("MTS ");
160 if (type & D2620)
161 printk("D2620 ");
162 if (type & D2633)
163 printk("D2633 ");
164 if (type & DTV6)
165 printk("DTV6 ");
166 if (type & QAM)
167 printk("QAM ");
168 if (type & DTV7)
169 printk("DTV7 ");
170 if (type & DTV78)
171 printk("DTV78 ");
172 if (type & DTV8)
173 printk("DTV8 ");
174 if (type & FM)
175 printk("FM ");
176 if (type & INPUT1)
177 printk("INPUT1 ");
178 if (type & LCD)
179 printk("LCD ");
180 if (type & NOGD)
181 printk("NOGD ");
182 if (type & MONO)
183 printk("MONO ");
184 if (type & ATSC)
185 printk("ATSC ");
186 if (type & IF)
187 printk("IF ");
188 if (type & LG60)
189 printk("LG60 ");
190 if (type & ATI638)
191 printk("ATI638 ");
192 if (type & OREN538)
193 printk("OREN538 ");
194 if (type & OREN36)
195 printk("OREN36 ");
196 if (type & TOYOTA388)
197 printk("TOYOTA388 ");
198 if (type & TOYOTA794)
199 printk("TOYOTA794 ");
200 if (type & DIBCOM52)
201 printk("DIBCOM52 ");
202 if (type & ZARLINK456)
203 printk("ZARLINK456 ");
204 if (type & CHINA)
205 printk("CHINA ");
206 if (type & F6MHZ)
207 printk("F6MHZ ");
208 if (type & INPUT2)
209 printk("INPUT2 ");
210 if (type & SCODE)
211 printk("SCODE ");
212 if (type & HAS_IF)
213 printk("HAS_IF_%d ", int_freq);
214 }
215
216 static v4l2_std_id parse_audio_std_option(void)
217 {
218 if (strcasecmp(audio_std, "A2") == 0)
219 return V4L2_STD_A2;
220 if (strcasecmp(audio_std, "A2/A") == 0)
221 return V4L2_STD_A2_A;
222 if (strcasecmp(audio_std, "A2/B") == 0)
223 return V4L2_STD_A2_B;
224 if (strcasecmp(audio_std, "NICAM") == 0)
225 return V4L2_STD_NICAM;
226 if (strcasecmp(audio_std, "NICAM/A") == 0)
227 return V4L2_STD_NICAM_A;
228 if (strcasecmp(audio_std, "NICAM/B") == 0)
229 return V4L2_STD_NICAM_B;
230
231 return 0;
232 }
233
234 static void free_firmware(struct xc2028_data *priv)
235 {
236 int i;
237 tuner_dbg("%s called\n", __func__);
238
239 if (!priv->firm)
240 return;
241
242 for (i = 0; i < priv->firm_size; i++)
243 kfree(priv->firm[i].ptr);
244
245 kfree(priv->firm);
246
247 priv->firm = NULL;
248 priv->firm_size = 0;
249
250 memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
251 }
252
253 static int load_all_firmwares(struct dvb_frontend *fe)
254 {
255 struct xc2028_data *priv = fe->tuner_priv;
256 const struct firmware *fw = NULL;
257 const unsigned char *p, *endp;
258 int rc = 0;
259 int n, n_array;
260 char name[33];
261 char *fname;
262
263 tuner_dbg("%s called\n", __func__);
264
265 if (!firmware_name[0])
266 fname = priv->ctrl.fname;
267 else
268 fname = firmware_name;
269
270 tuner_dbg("Reading firmware %s\n", fname);
271 rc = request_firmware(&fw, fname, &priv->i2c_props.adap->dev);
272 if (rc < 0) {
273 if (rc == -ENOENT)
274 tuner_err("Error: firmware %s not found.\n",
275 fname);
276 else
277 tuner_err("Error %d while requesting firmware %s \n",
278 rc, fname);
279
280 return rc;
281 }
282 p = fw->data;
283 endp = p + fw->size;
284
285 if (fw->size < sizeof(name) - 1 + 2 + 2) {
286 tuner_err("Error: firmware file %s has invalid size!\n",
287 fname);
288 goto corrupt;
289 }
290
291 memcpy(name, p, sizeof(name) - 1);
292 name[sizeof(name) - 1] = 0;
293 p += sizeof(name) - 1;
294
295 priv->firm_version = le16_to_cpu(*(__u16 *) p);
296 p += 2;
297
298 n_array = le16_to_cpu(*(__u16 *) p);
299 p += 2;
300
301 tuner_info("Loading %d firmware images from %s, type: %s, ver %d.%d\n",
302 n_array, fname, name,
303 priv->firm_version >> 8, priv->firm_version & 0xff);
304
305 priv->firm = kzalloc(sizeof(*priv->firm) * n_array, GFP_KERNEL);
306 if (priv->firm == NULL) {
307 tuner_err("Not enough memory to load firmware file.\n");
308 rc = -ENOMEM;
309 goto err;
310 }
311 priv->firm_size = n_array;
312
313 n = -1;
314 while (p < endp) {
315 __u32 type, size;
316 v4l2_std_id id;
317 __u16 int_freq = 0;
318
319 n++;
320 if (n >= n_array) {
321 tuner_err("More firmware images in file than "
322 "were expected!\n");
323 goto corrupt;
324 }
325
326 /* Checks if there's enough bytes to read */
327 if (p + sizeof(type) + sizeof(id) + sizeof(size) > endp) {
328 tuner_err("Firmware header is incomplete!\n");
329 goto corrupt;
330 }
331
332 type = le32_to_cpu(*(__u32 *) p);
333 p += sizeof(type);
334
335 id = le64_to_cpu(*(v4l2_std_id *) p);
336 p += sizeof(id);
337
338 if (type & HAS_IF) {
339 int_freq = le16_to_cpu(*(__u16 *) p);
340 p += sizeof(int_freq);
341 }
342
343 size = le32_to_cpu(*(__u32 *) p);
344 p += sizeof(size);
345
346 if ((!size) || (size + p > endp)) {
347 tuner_err("Firmware type ");
348 dump_firm_type(type);
349 printk("(%x), id %llx is corrupted "
350 "(size=%d, expected %d)\n",
351 type, (unsigned long long)id,
352 (unsigned)(endp - p), size);
353 goto corrupt;
354 }
355
356 priv->firm[n].ptr = kzalloc(size, GFP_KERNEL);
357 if (priv->firm[n].ptr == NULL) {
358 tuner_err("Not enough memory to load firmware file.\n");
359 rc = -ENOMEM;
360 goto err;
361 }
362 tuner_dbg("Reading firmware type ");
363 if (debug) {
364 dump_firm_type_and_int_freq(type, int_freq);
365 printk("(%x), id %llx, size=%d.\n",
366 type, (unsigned long long)id, size);
367 }
368
369 memcpy(priv->firm[n].ptr, p, size);
370 priv->firm[n].type = type;
371 priv->firm[n].id = id;
372 priv->firm[n].size = size;
373 priv->firm[n].int_freq = int_freq;
374
375 p += size;
376 }
377
378 if (n + 1 != priv->firm_size) {
379 tuner_err("Firmware file is incomplete!\n");
380 goto corrupt;
381 }
382
383 goto done;
384
385 corrupt:
386 rc = -EINVAL;
387 tuner_err("Error: firmware file is corrupted!\n");
388
389 err:
390 tuner_info("Releasing partially loaded firmware file.\n");
391 free_firmware(priv);
392
393 done:
394 release_firmware(fw);
395 if (rc == 0)
396 tuner_dbg("Firmware files loaded.\n");
397
398 return rc;
399 }
400
401 static int seek_firmware(struct dvb_frontend *fe, unsigned int type,
402 v4l2_std_id *id)
403 {
404 struct xc2028_data *priv = fe->tuner_priv;
405 int i, best_i = -1, best_nr_matches = 0;
406 unsigned int type_mask = 0;
407
408 tuner_dbg("%s called, want type=", __func__);
409 if (debug) {
410 dump_firm_type(type);
411 printk("(%x), id %016llx.\n", type, (unsigned long long)*id);
412 }
413
414 if (!priv->firm) {
415 tuner_err("Error! firmware not loaded\n");
416 return -EINVAL;
417 }
418
419 if (((type & ~SCODE) == 0) && (*id == 0))
420 *id = V4L2_STD_PAL;
421
422 if (type & BASE)
423 type_mask = BASE_TYPES;
424 else if (type & SCODE) {
425 type &= SCODE_TYPES;
426 type_mask = SCODE_TYPES & ~HAS_IF;
427 } else if (type & DTV_TYPES)
428 type_mask = DTV_TYPES;
429 else if (type & STD_SPECIFIC_TYPES)
430 type_mask = STD_SPECIFIC_TYPES;
431
432 type &= type_mask;
433
434 if (!(type & SCODE))
435 type_mask = ~0;
436
437 /* Seek for exact match */
438 for (i = 0; i < priv->firm_size; i++) {
439 if ((type == (priv->firm[i].type & type_mask)) &&
440 (*id == priv->firm[i].id))
441 goto found;
442 }
443
444 /* Seek for generic video standard match */
445 for (i = 0; i < priv->firm_size; i++) {
446 v4l2_std_id match_mask;
447 int nr_matches;
448
449 if (type != (priv->firm[i].type & type_mask))
450 continue;
451
452 match_mask = *id & priv->firm[i].id;
453 if (!match_mask)
454 continue;
455
456 if ((*id & match_mask) == *id)
457 goto found; /* Supports all the requested standards */
458
459 nr_matches = hweight64(match_mask);
460 if (nr_matches > best_nr_matches) {
461 best_nr_matches = nr_matches;
462 best_i = i;
463 }
464 }
465
466 if (best_nr_matches > 0) {
467 tuner_dbg("Selecting best matching firmware (%d bits) for "
468 "type=", best_nr_matches);
469 dump_firm_type(type);
470 printk("(%x), id %016llx:\n", type, (unsigned long long)*id);
471 i = best_i;
472 goto found;
473 }
474
475 /*FIXME: Would make sense to seek for type "hint" match ? */
476
477 i = -ENOENT;
478 goto ret;
479
480 found:
481 *id = priv->firm[i].id;
482
483 ret:
484 tuner_dbg("%s firmware for type=", (i < 0) ? "Can't find" : "Found");
485 if (debug) {
486 dump_firm_type(type);
487 printk("(%x), id %016llx.\n", type, (unsigned long long)*id);
488 }
489 return i;
490 }
491
492 static int load_firmware(struct dvb_frontend *fe, unsigned int type,
493 v4l2_std_id *id)
494 {
495 struct xc2028_data *priv = fe->tuner_priv;
496 int pos, rc;
497 unsigned char *p, *endp, buf[priv->ctrl.max_len];
498
499 tuner_dbg("%s called\n", __func__);
500
501 pos = seek_firmware(fe, type, id);
502 if (pos < 0)
503 return pos;
504
505 tuner_info("Loading firmware for type=");
506 dump_firm_type(priv->firm[pos].type);
507 printk("(%x), id %016llx.\n", priv->firm[pos].type,
508 (unsigned long long)*id);
509
510 p = priv->firm[pos].ptr;
511 endp = p + priv->firm[pos].size;
512
513 while (p < endp) {
514 __u16 size;
515
516 /* Checks if there's enough bytes to read */
517 if (p + sizeof(size) > endp) {
518 tuner_err("Firmware chunk size is wrong\n");
519 return -EINVAL;
520 }
521
522 size = le16_to_cpu(*(__u16 *) p);
523 p += sizeof(size);
524
525 if (size == 0xffff)
526 return 0;
527
528 if (!size) {
529 /* Special callback command received */
530 rc = priv->tuner_callback(priv->video_dev,
531 XC2028_TUNER_RESET, 0);
532 if (rc < 0) {
533 tuner_err("Error at RESET code %d\n",
534 (*p) & 0x7f);
535 return -EINVAL;
536 }
537 continue;
538 }
539 if (size >= 0xff00) {
540 switch (size) {
541 case 0xff00:
542 rc = priv->tuner_callback(priv->video_dev,
543 XC2028_RESET_CLK, 0);
544 if (rc < 0) {
545 tuner_err("Error at RESET code %d\n",
546 (*p) & 0x7f);
547 return -EINVAL;
548 }
549 break;
550 default:
551 tuner_info("Invalid RESET code %d\n",
552 size & 0x7f);
553 return -EINVAL;
554
555 }
556 continue;
557 }
558
559 /* Checks for a sleep command */
560 if (size & 0x8000) {
561 msleep(size & 0x7fff);
562 continue;
563 }
564
565 if ((size + p > endp)) {
566 tuner_err("missing bytes: need %d, have %d\n",
567 size, (int)(endp - p));
568 return -EINVAL;
569 }
570
571 buf[0] = *p;
572 p++;
573 size--;
574
575 /* Sends message chunks */
576 while (size > 0) {
577 int len = (size < priv->ctrl.max_len - 1) ?
578 size : priv->ctrl.max_len - 1;
579
580 memcpy(buf + 1, p, len);
581
582 rc = i2c_send(priv, buf, len + 1);
583 if (rc < 0) {
584 tuner_err("%d returned from send\n", rc);
585 return -EINVAL;
586 }
587
588 p += len;
589 size -= len;
590 }
591 }
592 return 0;
593 }
594
595 static int load_scode(struct dvb_frontend *fe, unsigned int type,
596 v4l2_std_id *id, __u16 int_freq, int scode)
597 {
598 struct xc2028_data *priv = fe->tuner_priv;
599 int pos, rc;
600 unsigned char *p;
601
602 tuner_dbg("%s called\n", __func__);
603
604 if (!int_freq) {
605 pos = seek_firmware(fe, type, id);
606 if (pos < 0)
607 return pos;
608 } else {
609 for (pos = 0; pos < priv->firm_size; pos++) {
610 if ((priv->firm[pos].int_freq == int_freq) &&
611 (priv->firm[pos].type & HAS_IF))
612 break;
613 }
614 if (pos == priv->firm_size)
615 return -ENOENT;
616 }
617
618 p = priv->firm[pos].ptr;
619
620 if (priv->firm[pos].type & HAS_IF) {
621 if (priv->firm[pos].size != 12 * 16 || scode >= 16)
622 return -EINVAL;
623 p += 12 * scode;
624 } else {
625 /* 16 SCODE entries per file; each SCODE entry is 12 bytes and
626 * has a 2-byte size header in the firmware format. */
627 if (priv->firm[pos].size != 14 * 16 || scode >= 16 ||
628 le16_to_cpu(*(__u16 *)(p + 14 * scode)) != 12)
629 return -EINVAL;
630 p += 14 * scode + 2;
631 }
632
633 tuner_info("Loading SCODE for type=");
634 dump_firm_type_and_int_freq(priv->firm[pos].type,
635 priv->firm[pos].int_freq);
636 printk("(%x), id %016llx.\n", priv->firm[pos].type,
637 (unsigned long long)*id);
638
639 if (priv->firm_version < 0x0202)
640 rc = send_seq(priv, {0x20, 0x00, 0x00, 0x00});
641 else
642 rc = send_seq(priv, {0xa0, 0x00, 0x00, 0x00});
643 if (rc < 0)
644 return -EIO;
645
646 rc = i2c_send(priv, p, 12);
647 if (rc < 0)
648 return -EIO;
649
650 rc = send_seq(priv, {0x00, 0x8c});
651 if (rc < 0)
652 return -EIO;
653
654 return 0;
655 }
656
657 static int check_firmware(struct dvb_frontend *fe, unsigned int type,
658 v4l2_std_id std, __u16 int_freq)
659 {
660 struct xc2028_data *priv = fe->tuner_priv;
661 struct firmware_properties new_fw;
662 int rc = 0, is_retry = 0;
663 u16 version, hwmodel;
664 v4l2_std_id std0;
665
666 tuner_dbg("%s called\n", __func__);
667
668 if (!priv->firm) {
669 if (!priv->ctrl.fname) {
670 tuner_info("xc2028/3028 firmware name not set!\n");
671 return -EINVAL;
672 }
673
674 rc = load_all_firmwares(fe);
675 if (rc < 0)
676 return rc;
677 }
678
679 if (priv->ctrl.mts && !(type & FM))
680 type |= MTS;
681
682 retry:
683 new_fw.type = type;
684 new_fw.id = std;
685 new_fw.std_req = std;
686 new_fw.scode_table = SCODE | priv->ctrl.scode_table;
687 new_fw.scode_nr = 0;
688 new_fw.int_freq = int_freq;
689
690 tuner_dbg("checking firmware, user requested type=");
691 if (debug) {
692 dump_firm_type(new_fw.type);
693 printk("(%x), id %016llx, ", new_fw.type,
694 (unsigned long long)new_fw.std_req);
695 if (!int_freq) {
696 printk("scode_tbl ");
697 dump_firm_type(priv->ctrl.scode_table);
698 printk("(%x), ", priv->ctrl.scode_table);
699 } else
700 printk("int_freq %d, ", new_fw.int_freq);
701 printk("scode_nr %d\n", new_fw.scode_nr);
702 }
703
704 /* No need to reload base firmware if it matches */
705 if (((BASE | new_fw.type) & BASE_TYPES) ==
706 (priv->cur_fw.type & BASE_TYPES)) {
707 tuner_dbg("BASE firmware not changed.\n");
708 goto skip_base;
709 }
710
711 /* Updating BASE - forget about all currently loaded firmware */
712 memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
713
714 /* Reset is needed before loading firmware */
715 rc = priv->tuner_callback(priv->video_dev,
716 XC2028_TUNER_RESET, 0);
717 if (rc < 0)
718 goto fail;
719
720 /* BASE firmwares are all std0 */
721 std0 = 0;
722 rc = load_firmware(fe, BASE | new_fw.type, &std0);
723 if (rc < 0) {
724 tuner_err("Error %d while loading base firmware\n",
725 rc);
726 goto fail;
727 }
728
729 /* Load INIT1, if needed */
730 tuner_dbg("Load init1 firmware, if exists\n");
731
732 rc = load_firmware(fe, BASE | INIT1 | new_fw.type, &std0);
733 if (rc == -ENOENT)
734 rc = load_firmware(fe, (BASE | INIT1 | new_fw.type) & ~F8MHZ,
735 &std0);
736 if (rc < 0 && rc != -ENOENT) {
737 tuner_err("Error %d while loading init1 firmware\n",
738 rc);
739 goto fail;
740 }
741
742 skip_base:
743 /*
744 * No need to reload standard specific firmware if base firmware
745 * was not reloaded and requested video standards have not changed.
746 */
747 if (priv->cur_fw.type == (BASE | new_fw.type) &&
748 priv->cur_fw.std_req == std) {
749 tuner_dbg("Std-specific firmware already loaded.\n");
750 goto skip_std_specific;
751 }
752
753 /* Reloading std-specific firmware forces a SCODE update */
754 priv->cur_fw.scode_table = 0;
755
756 rc = load_firmware(fe, new_fw.type, &new_fw.id);
757 if (rc == -ENOENT)
758 rc = load_firmware(fe, new_fw.type & ~F8MHZ, &new_fw.id);
759
760 if (rc < 0)
761 goto fail;
762
763 skip_std_specific:
764 if (priv->cur_fw.scode_table == new_fw.scode_table &&
765 priv->cur_fw.scode_nr == new_fw.scode_nr) {
766 tuner_dbg("SCODE firmware already loaded.\n");
767 goto check_device;
768 }
769
770 if (new_fw.type & FM)
771 goto check_device;
772
773 /* Load SCODE firmware, if exists */
774 tuner_dbg("Trying to load scode %d\n", new_fw.scode_nr);
775
776 rc = load_scode(fe, new_fw.type | new_fw.scode_table, &new_fw.id,
777 new_fw.int_freq, new_fw.scode_nr);
778
779 check_device:
780 if (xc2028_get_reg(priv, 0x0004, &version) < 0 ||
781 xc2028_get_reg(priv, 0x0008, &hwmodel) < 0) {
782 tuner_err("Unable to read tuner registers.\n");
783 goto fail;
784 }
785
786 tuner_dbg("Device is Xceive %d version %d.%d, "
787 "firmware version %d.%d\n",
788 hwmodel, (version & 0xf000) >> 12, (version & 0xf00) >> 8,
789 (version & 0xf0) >> 4, version & 0xf);
790
791 /* Check firmware version against what we downloaded. */
792 if (priv->firm_version != ((version & 0xf0) << 4 | (version & 0x0f))) {
793 tuner_err("Incorrect readback of firmware version.\n");
794 goto fail;
795 }
796
797 /* Check that the tuner hardware model remains consistent over time. */
798 if (priv->hwmodel == 0 && (hwmodel == 2028 || hwmodel == 3028)) {
799 priv->hwmodel = hwmodel;
800 priv->hwvers = version & 0xff00;
801 } else if (priv->hwmodel == 0 || priv->hwmodel != hwmodel ||
802 priv->hwvers != (version & 0xff00)) {
803 tuner_err("Read invalid device hardware information - tuner "
804 "hung?\n");
805 goto fail;
806 }
807
808 memcpy(&priv->cur_fw, &new_fw, sizeof(priv->cur_fw));
809
810 /*
811 * By setting BASE in cur_fw.type only after successfully loading all
812 * firmwares, we can:
813 * 1. Identify that BASE firmware with type=0 has been loaded;
814 * 2. Tell whether BASE firmware was just changed the next time through.
815 */
816 priv->cur_fw.type |= BASE;
817
818 return 0;
819
820 fail:
821 memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
822 if (!is_retry) {
823 msleep(50);
824 is_retry = 1;
825 tuner_dbg("Retrying firmware load\n");
826 goto retry;
827 }
828
829 if (rc == -ENOENT)
830 rc = -EINVAL;
831 return rc;
832 }
833
834 static int xc2028_signal(struct dvb_frontend *fe, u16 *strength)
835 {
836 struct xc2028_data *priv = fe->tuner_priv;
837 u16 frq_lock, signal = 0;
838 int rc;
839
840 tuner_dbg("%s called\n", __func__);
841
842 mutex_lock(&priv->lock);
843
844 /* Sync Lock Indicator */
845 rc = xc2028_get_reg(priv, 0x0002, &frq_lock);
846 if (rc < 0)
847 goto ret;
848
849 /* Frequency is locked */
850 if (frq_lock == 1)
851 signal = 32768;
852
853 /* Get SNR of the video signal */
854 rc = xc2028_get_reg(priv, 0x0040, &signal);
855 if (rc < 0)
856 goto ret;
857
858 /* Use both frq_lock and signal to generate the result */
859 signal = signal || ((signal & 0x07) << 12);
860
861 ret:
862 mutex_unlock(&priv->lock);
863
864 *strength = signal;
865
866 tuner_dbg("signal strength is %d\n", signal);
867
868 return rc;
869 }
870
871 #define DIV 15625
872
873 static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */,
874 enum tuner_mode new_mode,
875 unsigned int type,
876 v4l2_std_id std,
877 u16 int_freq)
878 {
879 struct xc2028_data *priv = fe->tuner_priv;
880 int rc = -EINVAL;
881 unsigned char buf[4];
882 u32 div, offset = 0;
883
884 tuner_dbg("%s called\n", __func__);
885
886 mutex_lock(&priv->lock);
887
888 tuner_dbg("should set frequency %d kHz\n", freq / 1000);
889
890 if (check_firmware(fe, type, std, int_freq) < 0)
891 goto ret;
892
893 /* On some cases xc2028 can disable video output, if
894 * very weak signals are received. By sending a soft
895 * reset, this is re-enabled. So, it is better to always
896 * send a soft reset before changing channels, to be sure
897 * that xc2028 will be in a safe state.
898 * Maybe this might also be needed for DTV.
899 */
900 if (new_mode == T_ANALOG_TV) {
901 rc = send_seq(priv, {0x00, 0x00});
902 } else if (priv->cur_fw.type & ATSC) {
903 offset = 1750000;
904 } else {
905 offset = 2750000;
906 /*
907 * We must adjust the offset by 500kHz in two cases in order
908 * to correctly center the IF output:
909 * 1) When the ZARLINK456 or DIBCOM52 tables were explicitly
910 * selected and a 7MHz channel is tuned;
911 * 2) When tuning a VHF channel with DTV78 firmware.
912 */
913 if (((priv->cur_fw.type & DTV7) &&
914 (priv->cur_fw.scode_table & (ZARLINK456 | DIBCOM52))) ||
915 ((priv->cur_fw.type & DTV78) && freq < 470000000))
916 offset -= 500000;
917 }
918
919 div = (freq - offset + DIV / 2) / DIV;
920
921 /* CMD= Set frequency */
922 if (priv->firm_version < 0x0202)
923 rc = send_seq(priv, {0x00, 0x02, 0x00, 0x00});
924 else
925 rc = send_seq(priv, {0x80, 0x02, 0x00, 0x00});
926 if (rc < 0)
927 goto ret;
928
929 /* Return code shouldn't be checked.
930 The reset CLK is needed only with tm6000.
931 Driver should work fine even if this fails.
932 */
933 priv->tuner_callback(priv->video_dev, XC2028_RESET_CLK, 1);
934
935 msleep(10);
936
937 buf[0] = 0xff & (div >> 24);
938 buf[1] = 0xff & (div >> 16);
939 buf[2] = 0xff & (div >> 8);
940 buf[3] = 0xff & (div);
941
942 rc = i2c_send(priv, buf, sizeof(buf));
943 if (rc < 0)
944 goto ret;
945 msleep(100);
946
947 priv->frequency = freq;
948
949 tuner_dbg("divisor= %02x %02x %02x %02x (freq=%d.%03d)\n",
950 buf[0], buf[1], buf[2], buf[3],
951 freq / 1000000, (freq % 1000000) / 1000);
952
953 rc = 0;
954
955 ret:
956 mutex_unlock(&priv->lock);
957
958 return rc;
959 }
960
961 static int xc2028_set_analog_freq(struct dvb_frontend *fe,
962 struct analog_parameters *p)
963 {
964 struct xc2028_data *priv = fe->tuner_priv;
965 unsigned int type=0;
966
967 tuner_dbg("%s called\n", __func__);
968
969 if (p->mode == V4L2_TUNER_RADIO) {
970 type |= FM;
971 if (priv->ctrl.input1)
972 type |= INPUT1;
973 return generic_set_freq(fe, (625l * p->frequency) / 10,
974 T_ANALOG_TV, type, 0, 0);
975 }
976
977 /* if std is not defined, choose one */
978 if (!p->std)
979 p->std = V4L2_STD_MN;
980
981 /* PAL/M, PAL/N, PAL/Nc and NTSC variants should use 6MHz firmware */
982 if (!(p->std & V4L2_STD_MN))
983 type |= F8MHZ;
984
985 /* Add audio hack to std mask */
986 p->std |= parse_audio_std_option();
987
988 return generic_set_freq(fe, 62500l * p->frequency,
989 T_ANALOG_TV, type, p->std, 0);
990 }
991
992 static int xc2028_set_params(struct dvb_frontend *fe,
993 struct dvb_frontend_parameters *p)
994 {
995 struct xc2028_data *priv = fe->tuner_priv;
996 unsigned int type=0;
997 fe_bandwidth_t bw = BANDWIDTH_8_MHZ;
998 u16 demod = 0;
999
1000 tuner_dbg("%s called\n", __func__);
1001
1002 if (priv->ctrl.d2633)
1003 type |= D2633;
1004 else
1005 type |= D2620;
1006
1007 switch(fe->ops.info.type) {
1008 case FE_OFDM:
1009 bw = p->u.ofdm.bandwidth;
1010 break;
1011 case FE_QAM:
1012 tuner_info("WARN: There are some reports that "
1013 "QAM 6 MHz doesn't work.\n"
1014 "If this works for you, please report by "
1015 "e-mail to: v4l-dvb-maintainer@linuxtv.org\n");
1016 bw = BANDWIDTH_6_MHZ;
1017 type |= QAM;
1018 break;
1019 case FE_ATSC:
1020 bw = BANDWIDTH_6_MHZ;
1021 /* The only ATSC firmware (at least on v2.7) is D2633,
1022 so overrides ctrl->d2633 */
1023 type |= ATSC| D2633;
1024 type &= ~D2620;
1025 break;
1026 /* DVB-S is not supported */
1027 default:
1028 return -EINVAL;
1029 }
1030
1031 switch (bw) {
1032 case BANDWIDTH_8_MHZ:
1033 if (p->frequency < 470000000)
1034 priv->ctrl.vhfbw7 = 0;
1035 else
1036 priv->ctrl.uhfbw8 = 1;
1037 type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV8;
1038 type |= F8MHZ;
1039 break;
1040 case BANDWIDTH_7_MHZ:
1041 if (p->frequency < 470000000)
1042 priv->ctrl.vhfbw7 = 1;
1043 else
1044 priv->ctrl.uhfbw8 = 0;
1045 type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV7;
1046 type |= F8MHZ;
1047 break;
1048 case BANDWIDTH_6_MHZ:
1049 type |= DTV6;
1050 priv->ctrl.vhfbw7 = 0;
1051 priv->ctrl.uhfbw8 = 0;
1052 break;
1053 default:
1054 tuner_err("error: bandwidth not supported.\n");
1055 };
1056
1057 /* All S-code tables need a 200kHz shift */
1058 if (priv->ctrl.demod)
1059 demod = priv->ctrl.demod + 200;
1060
1061 return generic_set_freq(fe, p->frequency,
1062 T_DIGITAL_TV, type, 0, demod);
1063 }
1064
1065
1066 static int xc2028_dvb_release(struct dvb_frontend *fe)
1067 {
1068 struct xc2028_data *priv = fe->tuner_priv;
1069
1070 tuner_dbg("%s called\n", __func__);
1071
1072 mutex_lock(&xc2028_list_mutex);
1073
1074 /* only perform final cleanup if this is the last instance */
1075 if (hybrid_tuner_report_instance_count(priv) == 1) {
1076 kfree(priv->ctrl.fname);
1077 free_firmware(priv);
1078 }
1079
1080 if (priv)
1081 hybrid_tuner_release_state(priv);
1082
1083 mutex_unlock(&xc2028_list_mutex);
1084
1085 fe->tuner_priv = NULL;
1086
1087 return 0;
1088 }
1089
1090 static int xc2028_get_frequency(struct dvb_frontend *fe, u32 *frequency)
1091 {
1092 struct xc2028_data *priv = fe->tuner_priv;
1093
1094 tuner_dbg("%s called\n", __func__);
1095
1096 *frequency = priv->frequency;
1097
1098 return 0;
1099 }
1100
1101 static int xc2028_set_config(struct dvb_frontend *fe, void *priv_cfg)
1102 {
1103 struct xc2028_data *priv = fe->tuner_priv;
1104 struct xc2028_ctrl *p = priv_cfg;
1105 int rc = 0;
1106
1107 tuner_dbg("%s called\n", __func__);
1108
1109 mutex_lock(&priv->lock);
1110
1111 memcpy(&priv->ctrl, p, sizeof(priv->ctrl));
1112 if (priv->ctrl.max_len < 9)
1113 priv->ctrl.max_len = 13;
1114
1115 if (p->fname) {
1116 if (priv->ctrl.fname && strcmp(p->fname, priv->ctrl.fname)) {
1117 kfree(priv->ctrl.fname);
1118 free_firmware(priv);
1119 }
1120
1121 priv->ctrl.fname = kstrdup(p->fname, GFP_KERNEL);
1122 if (priv->ctrl.fname == NULL)
1123 rc = -ENOMEM;
1124 }
1125
1126 mutex_unlock(&priv->lock);
1127
1128 return rc;
1129 }
1130
1131 static const struct dvb_tuner_ops xc2028_dvb_tuner_ops = {
1132 .info = {
1133 .name = "Xceive XC3028",
1134 .frequency_min = 42000000,
1135 .frequency_max = 864000000,
1136 .frequency_step = 50000,
1137 },
1138
1139 .set_config = xc2028_set_config,
1140 .set_analog_params = xc2028_set_analog_freq,
1141 .release = xc2028_dvb_release,
1142 .get_frequency = xc2028_get_frequency,
1143 .get_rf_strength = xc2028_signal,
1144 .set_params = xc2028_set_params,
1145 };
1146
1147 struct dvb_frontend *xc2028_attach(struct dvb_frontend *fe,
1148 struct xc2028_config *cfg)
1149 {
1150 struct xc2028_data *priv;
1151 int instance;
1152
1153 if (debug)
1154 printk(KERN_DEBUG "xc2028: Xcv2028/3028 init called!\n");
1155
1156 if (NULL == cfg)
1157 return NULL;
1158
1159 if (!fe) {
1160 printk(KERN_ERR "xc2028: No frontend!\n");
1161 return NULL;
1162 }
1163
1164 mutex_lock(&xc2028_list_mutex);
1165
1166 instance = hybrid_tuner_request_state(struct xc2028_data, priv,
1167 hybrid_tuner_instance_list,
1168 cfg->i2c_adap, cfg->i2c_addr,
1169 "xc2028");
1170 switch (instance) {
1171 case 0:
1172 /* memory allocation failure */
1173 goto fail;
1174 break;
1175 case 1:
1176 /* new tuner instance */
1177 priv->tuner_callback = cfg->callback;
1178 priv->ctrl.max_len = 13;
1179
1180 mutex_init(&priv->lock);
1181
1182 /* analog side (tuner-core) uses i2c_adap->algo_data.
1183 * digital side is not guaranteed to have algo_data defined.
1184 *
1185 * digital side will always have fe->dvb defined.
1186 * analog side (tuner-core) doesn't (yet) define fe->dvb.
1187 */
1188 priv->video_dev = ((fe->dvb) && (fe->dvb->priv)) ?
1189 fe->dvb->priv : cfg->i2c_adap->algo_data;
1190
1191 fe->tuner_priv = priv;
1192 break;
1193 case 2:
1194 /* existing tuner instance */
1195 fe->tuner_priv = priv;
1196 break;
1197 }
1198
1199 memcpy(&fe->ops.tuner_ops, &xc2028_dvb_tuner_ops,
1200 sizeof(xc2028_dvb_tuner_ops));
1201
1202 tuner_info("type set to %s\n", "XCeive xc2028/xc3028 tuner");
1203
1204 if (cfg->ctrl)
1205 xc2028_set_config(fe, cfg->ctrl);
1206
1207 mutex_unlock(&xc2028_list_mutex);
1208
1209 return fe;
1210 fail:
1211 mutex_unlock(&xc2028_list_mutex);
1212
1213 xc2028_dvb_release(fe);
1214 return NULL;
1215 }
1216
1217 EXPORT_SYMBOL(xc2028_attach);
1218
1219 MODULE_DESCRIPTION("Xceive xc2028/xc3028 tuner driver");
1220 MODULE_AUTHOR("Michel Ludwig <michel.ludwig@gmail.com>");
1221 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
1222 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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