]> git.proxmox.com Git - mirror_ubuntu-hirsute-kernel.git/blob - drivers/media/video/tuner-xc2028.c
projects / mirror_ubuntu-hirsute-kernel.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
V4L/DVB (6637): xc2028: add missing break
[mirror_ubuntu-hirsute-kernel.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 unsigned char *ptr;
54 unsigned int size;
55 };
56
57 struct xc2028_data {
58 struct list_head xc2028_list;
59 struct tuner_i2c_props i2c_props;
60 int (*tuner_callback) (void *dev,
61 int command, int arg);
62 void *video_dev;
63 int count;
64 __u32 frequency;
65
66 struct firmware_description *firm;
67 int firm_size;
68
69 __u16 version;
70
71 struct xc2028_ctrl ctrl;
72
73 v4l2_std_id firm_type; /* video stds supported
74 by current firmware */
75 fe_bandwidth_t bandwidth; /* Firmware bandwidth:
76 6M, 7M or 8M */
77 int need_load_generic; /* The generic firmware
78 were loaded? */
79
80 int max_len; /* Max firmware chunk */
81
82 enum tuner_mode mode;
83 struct i2c_client *i2c_client;
84
85 struct mutex lock;
86 };
87
88 #define i2c_send(priv, buf, size) ({ \
89 int _rc; \
90 _rc = tuner_i2c_xfer_send(&priv->i2c_props, buf, size); \
91 if (size != _rc) \
92 tuner_info("i2c output error: rc = %d (should be %d)\n",\
93 _rc, (int)size); \
94 _rc; \
95 })
96
97 #define i2c_rcv(priv, buf, size) ({ \
98 int _rc; \
99 _rc = tuner_i2c_xfer_recv(&priv->i2c_props, buf, size); \
100 if (size != _rc) \
101 tuner_err("i2c input error: rc = %d (should be %d)\n", \
102 _rc, (int)size); \
103 _rc; \
104 })
105
106 #define i2c_send_recv(priv, obuf, osize, ibuf, isize) ({ \
107 int _rc; \
108 _rc = tuner_i2c_xfer_send_recv(&priv->i2c_props, obuf, osize, \
109 ibuf, isize); \
110 if (isize != _rc) \
111 tuner_err("i2c input error: rc = %d (should be %d)\n", \
112 _rc, (int)isize); \
113 _rc; \
114 })
115
116 #define send_seq(priv, data...) ({ \
117 static u8 _val[] = data; \
118 int _rc; \
119 if (sizeof(_val) != \
120 (_rc = tuner_i2c_xfer_send(&priv->i2c_props, \
121 _val, sizeof(_val)))) { \
122 tuner_err("Error on line %d: %d\n", __LINE__, _rc); \
123 } else \
124 msleep(10); \
125 _rc; \
126 })
127
128 static unsigned int xc2028_get_reg(struct xc2028_data *priv, u16 reg, u16 *val)
129 {
130 unsigned char buf[2];
131 unsigned char ibuf[2];
132
133 tuner_dbg("%s %04x called\n", __FUNCTION__, reg);
134
135 buf[0] = reg >> 8;
136 buf[1] = (unsigned char) reg;
137
138 if (i2c_send_recv(priv, buf, 2, ibuf, 2) != 2)
139 return -EIO;
140
141 *val = (ibuf[1]) | (ibuf[0] << 8);
142 return 0;
143 }
144
145 void dump_firm_type(unsigned int type)
146 {
147 if (type & BASE)
148 printk("BASE ");
149 if (type & INIT1)
150 printk("INIT1 ");
151 if (type & F8MHZ)
152 printk("F8MHZ ");
153 if (type & MTS)
154 printk("MTS ");
155 if (type & D2620)
156 printk("D2620 ");
157 if (type & D2633)
158 printk("D2633 ");
159 if (type & DTV6)
160 printk("DTV6 ");
161 if (type & QAM)
162 printk("QAM ");
163 if (type & DTV7)
164 printk("DTV7 ");
165 if (type & DTV78)
166 printk("DTV78 ");
167 if (type & DTV8)
168 printk("DTV8 ");
169 if (type & FM)
170 printk("FM ");
171 if (type & INPUT1)
172 printk("INPUT1 ");
173 if (type & LCD)
174 printk("LCD ");
175 if (type & NOGD)
176 printk("NOGD ");
177 if (type & MONO)
178 printk("MONO ");
179 if (type & ATSC)
180 printk("ATSC ");
181 if (type & IF)
182 printk("IF ");
183 if (type & LG60)
184 printk("LG60 ");
185 if (type & ATI638)
186 printk("ATI638 ");
187 if (type & OREN538)
188 printk("OREN538 ");
189 if (type & OREN36)
190 printk("OREN36 ");
191 if (type & TOYOTA388)
192 printk("TOYOTA388 ");
193 if (type & TOYOTA794)
194 printk("TOYOTA794 ");
195 if (type & DIBCOM52)
196 printk("DIBCOM52 ");
197 if (type & ZARLINK456)
198 printk("ZARLINK456 ");
199 if (type & CHINA)
200 printk("CHINA ");
201 if (type & F6MHZ)
202 printk("F6MHZ ");
203 if (type & INPUT2)
204 printk("INPUT2 ");
205 if (type & SCODE)
206 printk("SCODE ");
207 }
208
209 static v4l2_std_id parse_audio_std_option(void)
210 {
211 if (strcasecmp(audio_std, "A2") == 0)
212 return V4L2_STD_A2;
213 if (strcasecmp(audio_std, "A2/A") == 0)
214 return V4L2_STD_A2_A;
215 if (strcasecmp(audio_std, "A2/B") == 0)
216 return V4L2_STD_A2_B;
217 if (strcasecmp(audio_std, "NICAM") == 0)
218 return V4L2_STD_NICAM;
219 if (strcasecmp(audio_std, "NICAM/A") == 0)
220 return V4L2_STD_NICAM_A;
221 if (strcasecmp(audio_std, "NICAM/B") == 0)
222 return V4L2_STD_NICAM_B;
223
224 return 0;
225 }
226
227 static void free_firmware(struct xc2028_data *priv)
228 {
229 int i;
230
231 if (!priv->firm)
232 return;
233
234 for (i = 0; i < priv->firm_size; i++)
235 kfree(priv->firm[i].ptr);
236
237 kfree(priv->firm);
238
239 priv->firm = NULL;
240 priv->need_load_generic = 1;
241 }
242
243 static int load_all_firmwares(struct dvb_frontend *fe)
244 {
245 struct xc2028_data *priv = fe->tuner_priv;
246 const struct firmware *fw = NULL;
247 unsigned char *p, *endp;
248 int rc = 0;
249 int n, n_array;
250 char name[33];
251
252 tuner_dbg("%s called\n", __FUNCTION__);
253
254 tuner_info("Reading firmware %s\n", priv->ctrl.fname);
255 rc = request_firmware(&fw, priv->ctrl.fname,
256 &priv->i2c_props.adap->dev);
257 if (rc < 0) {
258 if (rc == -ENOENT)
259 tuner_err("Error: firmware %s not found.\n",
260 priv->ctrl.fname);
261 else
262 tuner_err("Error %d while requesting firmware %s \n",
263 rc, priv->ctrl.fname);
264
265 return rc;
266 }
267 p = fw->data;
268 endp = p + fw->size;
269
270 if (fw->size < sizeof(name) - 1 + 2) {
271 tuner_err("Error: firmware size is zero!\n");
272 rc = -EINVAL;
273 goto done;
274 }
275
276 memcpy(name, p, sizeof(name) - 1);
277 name[sizeof(name) - 1] = 0;
278 p += sizeof(name) - 1;
279
280 priv->version = le16_to_cpu(*(__u16 *) p);
281 p += 2;
282
283 tuner_info("Firmware: %s, ver %d.%d\n", name,
284 priv->version >> 8, priv->version & 0xff);
285
286 if (p + 2 > endp)
287 goto corrupt;
288
289 n_array = le16_to_cpu(*(__u16 *) p);
290 p += 2;
291
292 tuner_info("There are %d firmwares at %s\n",
293 n_array, priv->ctrl.fname);
294
295 priv->firm = kzalloc(sizeof(*priv->firm) * n_array, GFP_KERNEL);
296
297 if (!fw) {
298 tuner_err("Not enough memory for reading firmware.\n");
299 rc = -ENOMEM;
300 goto done;
301 }
302
303 priv->firm_size = n_array;
304 n = -1;
305 while (p < endp) {
306 __u32 type, size;
307 v4l2_std_id id;
308
309 n++;
310 if (n >= n_array) {
311 tuner_err("Too much firmwares at the file\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 size = le32_to_cpu(*(__u32 *) p);
328 p += sizeof(size);
329
330 if ((!size) || (size + p > endp)) {
331 tuner_err("Firmware type ");
332 dump_firm_type(type);
333 printk("(%x), id %llx is corrupted "
334 "(size=%d, expected %d)\n",
335 type, (unsigned long long)id,
336 (unsigned)(endp - p), size);
337 goto corrupt;
338 }
339
340 priv->firm[n].ptr = kzalloc(size, GFP_KERNEL);
341 if (!priv->firm[n].ptr) {
342 tuner_err("Not enough memory.\n");
343 rc = -ENOMEM;
344 goto err;
345 }
346 tuner_info("Reading firmware type ");
347 dump_firm_type(type);
348 printk("(%x), id %llx, size=%d.\n",
349 type, (unsigned long long)id, size);
350
351 memcpy(priv->firm[n].ptr, p, size);
352 priv->firm[n].type = type;
353 priv->firm[n].id = id;
354 priv->firm[n].size = size;
355
356 p += size;
357 }
358
359 if (n + 1 != priv->firm_size) {
360 tuner_err("Firmware file is incomplete!\n");
361 goto corrupt;
362 }
363
364 goto done;
365
366 corrupt:
367 rc = -EINVAL;
368 tuner_err("Error: firmware file is corrupted!\n");
369
370 err:
371 tuner_info("Releasing loaded firmware file.\n");
372
373 free_firmware(priv);
374
375 done:
376 release_firmware(fw);
377 tuner_dbg("Firmware files loaded.\n");
378
379 return rc;
380 }
381
382 static int seek_firmware(struct dvb_frontend *fe, unsigned int type,
383 v4l2_std_id *id)
384 {
385 struct xc2028_data *priv = fe->tuner_priv;
386 int i;
387
388 tuner_dbg("%s called\n", __FUNCTION__);
389
390 if (!priv->firm) {
391 tuner_err("Error! firmware not loaded\n");
392 return -EINVAL;
393 }
394
395 if (((type & ~SCODE) == 0) && (*id == 0))
396 *id = V4L2_STD_PAL;
397
398 /* Seek for exact match */
399 for (i = 0; i < priv->firm_size; i++) {
400 if ((type == priv->firm[i].type) && (*id == priv->firm[i].id))
401 goto found;
402 }
403
404 /* Seek for generic video standard match */
405 for (i = 0; i < priv->firm_size; i++) {
406 if ((type == priv->firm[i].type) && (*id & priv->firm[i].id))
407 goto found;
408 }
409
410 /*FIXME: Would make sense to seek for type "hint" match ? */
411
412 i = -EINVAL;
413 goto ret;
414
415 found:
416 *id = priv->firm[i].id;
417
418 ret:
419 tuner_dbg("%s firmware for type=", (i < 0)? "Can't find": "Found");
420 if (debug) {
421 dump_firm_type(type);
422 printk("(%x), id %016llx.\n", type, (unsigned long long)*id);
423 }
424 return i;
425 }
426
427 static int load_firmware(struct dvb_frontend *fe, unsigned int type,
428 v4l2_std_id *id)
429 {
430 struct xc2028_data *priv = fe->tuner_priv;
431 int pos, rc;
432 unsigned char *p, *endp, buf[priv->max_len];
433
434 tuner_dbg("%s called\n", __FUNCTION__);
435
436 pos = seek_firmware(fe, type, id);
437 if (pos < 0)
438 return pos;
439
440 tuner_info("Loading firmware for type=");
441 dump_firm_type(type);
442 printk("(%x), id %016llx.\n", type, (unsigned long long)*id);
443
444 p = priv->firm[pos].ptr;
445
446 if (!p) {
447 tuner_err("Firmware pointer were freed!");
448 return -EINVAL;
449 }
450 endp = p + priv->firm[pos].size;
451
452 while (p < endp) {
453 __u16 size;
454
455 /* Checks if there's enough bytes to read */
456 if (p + sizeof(size) > endp) {
457 tuner_err("Firmware chunk size is wrong\n");
458 return -EINVAL;
459 }
460
461 size = le16_to_cpu(*(__u16 *) p);
462 p += sizeof(size);
463
464 if (size == 0xffff)
465 return 0;
466
467 if (!size) {
468 /* Special callback command received */
469 rc = priv->tuner_callback(priv->video_dev,
470 XC2028_TUNER_RESET, 0);
471 if (rc < 0) {
472 tuner_err("Error at RESET code %d\n",
473 (*p) & 0x7f);
474 return -EINVAL;
475 }
476 continue;
477 }
478 if (size >= 0xff00) {
479 switch (size) {
480 case 0xff00:
481 rc = priv->tuner_callback(priv->video_dev,
482 XC2028_RESET_CLK, 0);
483 if (rc < 0) {
484 tuner_err("Error at RESET code %d\n",
485 (*p) & 0x7f);
486 return -EINVAL;
487 }
488 break;
489 default:
490 tuner_info("Invalid RESET code %d\n",
491 size & 0x7f);
492 return -EINVAL;
493
494 }
495 continue;
496 }
497
498 /* Checks for a sleep command */
499 if (size & 0x8000) {
500 msleep(size & 0x7fff);
501 continue;
502 }
503
504 if ((size + p > endp)) {
505 tuner_err("missing bytes: need %d, have %d\n",
506 size, (int)(endp - p));
507 return -EINVAL;
508 }
509
510 buf[0] = *p;
511 p++;
512 size--;
513
514 /* Sends message chunks */
515 while (size > 0) {
516 int len = (size < priv->max_len - 1) ?
517 size : priv->max_len - 1;
518
519 memcpy(buf + 1, p, len);
520
521 rc = i2c_send(priv, buf, len + 1);
522 if (rc < 0) {
523 tuner_err("%d returned from send\n", rc);
524 return -EINVAL;
525 }
526
527 p += len;
528 size -= len;
529 }
530 }
531 return 0;
532 }
533
534 static int load_scode(struct dvb_frontend *fe, unsigned int type,
535 v4l2_std_id *id, int scode)
536 {
537 struct xc2028_data *priv = fe->tuner_priv;
538 int pos, rc;
539 unsigned char *p;
540
541 tuner_dbg("%s called\n", __FUNCTION__);
542
543 pos = seek_firmware(fe, type, id);
544 if (pos < 0)
545 return pos;
546
547 p = priv->firm[pos].ptr;
548
549 if (!p) {
550 tuner_err("Firmware pointer were freed!");
551 return -EINVAL;
552 }
553
554 if ((priv->firm[pos].size != 12 * 16) || (scode >= 16))
555 return -EINVAL;
556
557 if (priv->version < 0x0202)
558 rc = send_seq(priv, {0x20, 0x00, 0x00, 0x00});
559 else
560 rc = send_seq(priv, {0xa0, 0x00, 0x00, 0x00});
561 if (rc < 0)
562 return -EIO;
563
564 rc = i2c_send(priv, p + 12 * scode, 12);
565 if (rc < 0)
566 return -EIO;
567
568 rc = send_seq(priv, {0x00, 0x8c});
569 if (rc < 0)
570 return -EIO;
571
572 return 0;
573 }
574
575 static int check_firmware(struct dvb_frontend *fe, enum tuner_mode new_mode,
576 v4l2_std_id std, fe_bandwidth_t bandwidth)
577 {
578 struct xc2028_data *priv = fe->tuner_priv;
579 int rc;
580 u16 version, hwmodel;
581 v4l2_std_id std0 = 0;
582 unsigned int type0 = 0, type = 0;
583 int change_digital_bandwidth;
584
585 tuner_dbg("%s called\n", __FUNCTION__);
586
587 if (!priv->firm) {
588 if (!priv->ctrl.fname) {
589 tuner_info("xc2028/3028 firmware name not set!\n");
590 return -EINVAL;
591 }
592
593 rc = load_all_firmwares(fe);
594 if (rc < 0)
595 return rc;
596 }
597
598 tuner_dbg("I am in mode %u and I should switch to mode %i\n",
599 priv->mode, new_mode);
600
601 /* first of all, determine whether we have switched the mode */
602 if (new_mode != priv->mode) {
603 priv->mode = new_mode;
604 priv->need_load_generic = 1;
605 }
606
607 change_digital_bandwidth = (priv->mode == T_DIGITAL_TV
608 && bandwidth != priv->bandwidth) ? 1 : 0;
609 tuner_dbg("old bandwidth %u, new bandwidth %u\n", priv->bandwidth,
610 bandwidth);
611
612 if (priv->need_load_generic) {
613 /* Reset is needed before loading firmware */
614 rc = priv->tuner_callback(priv->video_dev,
615 XC2028_TUNER_RESET, 0);
616 if (rc < 0)
617 return rc;
618
619 type0 = BASE;
620
621 if (priv->ctrl.type == XC2028_FIRM_MTS)
622 type0 |= MTS;
623
624 if (priv->bandwidth == 8)
625 type0 |= F8MHZ;
626
627 /* FIXME: How to load FM and FM|INPUT1 firmwares? */
628
629 rc = load_firmware(fe, type0, &std0);
630 if (rc < 0) {
631 tuner_err("Error %d while loading generic firmware\n",
632 rc);
633 return rc;
634 }
635
636 priv->need_load_generic = 0;
637 priv->firm_type = 0;
638 if (priv->mode == T_DIGITAL_TV)
639 change_digital_bandwidth = 1;
640 }
641
642 tuner_dbg("I should change bandwidth %u\n", change_digital_bandwidth);
643
644 if (change_digital_bandwidth) {
645
646 /*FIXME: Should allow selecting between D2620 and D2633 */
647 type |= D2620;
648
649 /* FIXME: When should select a DTV78 firmware?
650 */
651 switch (bandwidth) {
652 case BANDWIDTH_8_MHZ:
653 type |= DTV8;
654 break;
655 case BANDWIDTH_7_MHZ:
656 type |= DTV7;
657 break;
658 case BANDWIDTH_6_MHZ:
659 /* FIXME: Should allow select also ATSC */
660 type |= DTV6 | QAM;
661 break;
662
663 default:
664 tuner_err("error: bandwidth not supported.\n");
665 };
666 priv->bandwidth = bandwidth;
667 }
668
669 if (!change_digital_bandwidth && priv->mode == T_DIGITAL_TV)
670 return 0;
671
672 /* Load INIT1, if needed */
673 tuner_dbg("Load init1 firmware, if exists\n");
674 type0 = BASE | INIT1;
675 if (priv->ctrl.type == XC2028_FIRM_MTS)
676 type0 |= MTS;
677
678 /* FIXME: Should handle errors - if INIT1 found */
679 rc = load_firmware(fe, type0, &std0);
680
681 /* FIXME: Should add support for FM radio
682 */
683
684 if (priv->ctrl.type == XC2028_FIRM_MTS)
685 type |= MTS;
686
687 if (priv->firm_type & std) {
688 tuner_dbg("Std-specific firmware already loaded.\n");
689 return 0;
690 }
691
692 /* Add audio hack to std mask */
693 std |= parse_audio_std_option();
694
695 rc = load_firmware(fe, type, &std);
696 if (rc < 0)
697 return rc;
698
699 /* Load SCODE firmware, if exists */
700 tuner_dbg("Trying to load scode 0\n");
701 type |= SCODE;
702
703 rc = load_scode(fe, type, &std, 0);
704
705 xc2028_get_reg(priv, 0x0004, &version);
706 xc2028_get_reg(priv, 0x0008, &hwmodel);
707
708 tuner_info("Device is Xceive %d version %d.%d, "
709 "firmware version %d.%d\n",
710 hwmodel, (version & 0xf000) >> 12, (version & 0xf00) >> 8,
711 (version & 0xf0) >> 4, version & 0xf);
712
713 priv->firm_type = std;
714
715 return 0;
716 }
717
718 static int xc2028_signal(struct dvb_frontend *fe, u16 *strength)
719 {
720 struct xc2028_data *priv = fe->tuner_priv;
721 u16 frq_lock, signal = 0;
722 int rc;
723
724 tuner_dbg("%s called\n", __FUNCTION__);
725
726 mutex_lock(&priv->lock);
727
728 /* Sync Lock Indicator */
729 rc = xc2028_get_reg(priv, 0x0002, &frq_lock);
730 if (rc < 0 || frq_lock == 0)
731 goto ret;
732
733 /* Frequency is locked. Return signal quality */
734
735 /* Get SNR of the video signal */
736 rc = xc2028_get_reg(priv, 0x0040, &signal);
737 if (rc < 0)
738 signal = -frq_lock;
739
740 ret:
741 mutex_unlock(&priv->lock);
742
743 *strength = signal;
744
745 return rc;
746 }
747
748 #define DIV 15625
749
750 static int generic_set_tv_freq(struct dvb_frontend *fe, u32 freq /* in Hz */ ,
751 enum tuner_mode new_mode,
752 v4l2_std_id std, fe_bandwidth_t bandwidth)
753 {
754 struct xc2028_data *priv = fe->tuner_priv;
755 int rc = -EINVAL;
756 unsigned char buf[5];
757 u32 div, offset = 0;
758
759 tuner_dbg("%s called\n", __FUNCTION__);
760
761 mutex_lock(&priv->lock);
762
763 /* HACK: It seems that specific firmware need to be reloaded
764 when freq is changed */
765
766 priv->firm_type = 0;
767
768 /* Reset GPIO 1 */
769 rc = priv->tuner_callback(priv->video_dev, XC2028_TUNER_RESET, 0);
770 if (rc < 0)
771 goto ret;
772
773 msleep(10);
774 tuner_dbg("should set frequency %d kHz)\n", freq / 1000);
775
776 if (check_firmware(fe, new_mode, std, bandwidth) < 0)
777 goto ret;
778
779 if (new_mode == T_DIGITAL_TV)
780 offset = 2750000;
781
782 div = (freq - offset + DIV / 2) / DIV;
783
784 /* CMD= Set frequency */
785
786 if (priv->version < 0x0202)
787 rc = send_seq(priv, {0x00, 0x02, 0x00, 0x00});
788 else
789 rc = send_seq(priv, {0x80, 0x02, 0x00, 0x00});
790 if (rc < 0)
791 goto ret;
792
793 rc = priv->tuner_callback(priv->video_dev, XC2028_RESET_CLK, 1);
794 if (rc < 0)
795 goto ret;
796
797 msleep(10);
798
799 buf[0] = 0xff & (div >> 24);
800 buf[1] = 0xff & (div >> 16);
801 buf[2] = 0xff & (div >> 8);
802 buf[3] = 0xff & (div);
803 buf[4] = 0;
804
805 rc = i2c_send(priv, buf, sizeof(buf));
806 if (rc < 0)
807 goto ret;
808 msleep(100);
809
810 priv->frequency = freq;
811
812 tuner_dbg("divider= %02x %02x %02x %02x (freq=%d.%02d)\n",
813 buf[1], buf[2], buf[3], buf[4],
814 freq / 1000000, (freq % 1000000) / 10000);
815
816 rc = 0;
817
818 ret:
819 mutex_unlock(&priv->lock);
820
821 return rc;
822 }
823
824 static int xc2028_set_tv_freq(struct dvb_frontend *fe,
825 struct analog_parameters *p)
826 {
827 struct xc2028_data *priv = fe->tuner_priv;
828
829 tuner_dbg("%s called\n", __FUNCTION__);
830
831 return generic_set_tv_freq(fe, 62500l * p->frequency, T_ANALOG_TV,
832 p->std, BANDWIDTH_8_MHZ /* NOT USED */);
833 }
834
835 static int xc2028_set_params(struct dvb_frontend *fe,
836 struct dvb_frontend_parameters *p)
837 {
838 struct xc2028_data *priv = fe->tuner_priv;
839
840 tuner_dbg("%s called\n", __FUNCTION__);
841
842 /* FIXME: Only OFDM implemented */
843 if (fe->ops.info.type != FE_OFDM) {
844 tuner_err("DTV type not implemented.\n");
845 return -EINVAL;
846 }
847
848 return generic_set_tv_freq(fe, p->frequency, T_DIGITAL_TV,
849 0 /* NOT USED */,
850 p->u.ofdm.bandwidth);
851
852 }
853
854 static int xc2028_dvb_release(struct dvb_frontend *fe)
855 {
856 struct xc2028_data *priv = fe->tuner_priv;
857
858 tuner_dbg("%s called\n", __FUNCTION__);
859
860 mutex_lock(&xc2028_list_mutex);
861
862 priv->count--;
863
864 if (!priv->count) {
865 list_del(&priv->xc2028_list);
866
867 kfree(priv->ctrl.fname);
868
869 free_firmware(priv);
870 kfree(priv);
871 }
872
873 mutex_unlock(&xc2028_list_mutex);
874
875 return 0;
876 }
877
878 static int xc2028_get_frequency(struct dvb_frontend *fe, u32 *frequency)
879 {
880 struct xc2028_data *priv = fe->tuner_priv;
881
882 tuner_dbg("%s called\n", __FUNCTION__);
883
884 *frequency = priv->frequency;
885
886 return 0;
887 }
888
889 static int xc2028_set_config(struct dvb_frontend *fe, void *priv_cfg)
890 {
891 struct xc2028_data *priv = fe->tuner_priv;
892 struct xc2028_ctrl *p = priv_cfg;
893
894 tuner_dbg("%s called\n", __FUNCTION__);
895
896 priv->ctrl.type = p->type;
897
898 if (p->fname) {
899 kfree(priv->ctrl.fname);
900
901 priv->ctrl.fname = kmalloc(strlen(p->fname) + 1, GFP_KERNEL);
902 if (!priv->ctrl.fname)
903 return -ENOMEM;
904
905 free_firmware(priv);
906 strcpy(priv->ctrl.fname, p->fname);
907 }
908
909 if (p->max_len > 0)
910 priv->max_len = p->max_len;
911
912 return 0;
913 }
914
915 static const struct dvb_tuner_ops xc2028_dvb_tuner_ops = {
916 .info = {
917 .name = "Xceive XC3028",
918 .frequency_min = 42000000,
919 .frequency_max = 864000000,
920 .frequency_step = 50000,
921 },
922
923 .set_config = xc2028_set_config,
924 .set_analog_params = xc2028_set_tv_freq,
925 .release = xc2028_dvb_release,
926 .get_frequency = xc2028_get_frequency,
927 .get_rf_strength = xc2028_signal,
928 .set_params = xc2028_set_params,
929
930 };
931
932 void *xc2028_attach(struct dvb_frontend *fe, struct xc2028_config *cfg)
933 {
934 struct xc2028_data *priv;
935 void *video_dev;
936
937 if (debug)
938 printk(KERN_DEBUG PREFIX ": Xcv2028/3028 init called!\n");
939
940 if (NULL == cfg->video_dev)
941 return NULL;
942
943 if (!fe) {
944 printk(KERN_ERR PREFIX ": No frontend!\n");
945 return NULL;
946 }
947
948 video_dev = cfg->video_dev;
949
950 mutex_lock(&xc2028_list_mutex);
951
952 list_for_each_entry(priv, &xc2028_list, xc2028_list) {
953 if (priv->video_dev == cfg->video_dev) {
954 video_dev = NULL;
955 break;
956 }
957 }
958
959 if (video_dev) {
960 priv = kzalloc(sizeof(*priv), GFP_KERNEL);
961 if (priv == NULL) {
962 mutex_unlock(&xc2028_list_mutex);
963 return NULL;
964 }
965
966 priv->bandwidth = BANDWIDTH_6_MHZ;
967 priv->need_load_generic = 1;
968 priv->mode = T_UNINITIALIZED;
969 priv->i2c_props.addr = cfg->i2c_addr;
970 priv->i2c_props.adap = cfg->i2c_adap;
971 priv->video_dev = video_dev;
972 priv->tuner_callback = cfg->callback;
973 priv->max_len = 13;
974
975 mutex_init(&priv->lock);
976
977 list_add_tail(&priv->xc2028_list, &xc2028_list);
978 }
979
980 fe->tuner_priv = priv;
981 priv->count++;
982
983 memcpy(&fe->ops.tuner_ops, &xc2028_dvb_tuner_ops,
984 sizeof(xc2028_dvb_tuner_ops));
985
986 tuner_info("type set to %s\n", "XCeive xc2028/xc3028 tuner");
987
988 mutex_unlock(&xc2028_list_mutex);
989
990 return fe;
991 }
992
993 EXPORT_SYMBOL(xc2028_attach);
994
995 MODULE_DESCRIPTION("Xceive xc2028/xc3028 tuner driver");
996 MODULE_AUTHOR("Michel Ludwig <michel.ludwig@gmail.com>");
997 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
998 MODULE_LICENSE("GPL");
Ubuntu Hirsute Linux kernel mirror