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sched: Remove double_rq_lock() from __migrate_task()
[linux/fpc-iii.git] / drivers / media / tuners / tuner-xc2028.c
blob6ef93ee1fdcb266780e32cd11d5736af3f24c24d
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 <linux/slab.h>
19 #include <asm/unaligned.h>
20 #include "tuner-i2c.h"
21 #include "tuner-xc2028.h"
22 #include "tuner-xc2028-types.h"
23
24 #include <linux/dvb/frontend.h>
25 #include "dvb_frontend.h"
26
27 /* Max transfer size done by I2C transfer functions */
28 #define MAX_XFER_SIZE 80
29
30 /* Registers (Write-only) */
31 #define XREG_INIT 0x00
32 #define XREG_RF_FREQ 0x02
33 #define XREG_POWER_DOWN 0x08
34
35 /* Registers (Read-only) */
36 #define XREG_FREQ_ERROR 0x01
37 #define XREG_LOCK 0x02
38 #define XREG_VERSION 0x04
39 #define XREG_PRODUCT_ID 0x08
40 #define XREG_HSYNC_FREQ 0x10
41 #define XREG_FRAME_LINES 0x20
42 #define XREG_SNR 0x40
43
44 #define XREG_ADC_ENV 0x0100
45
46 static int debug;
47 module_param(debug, int, 0644);
48 MODULE_PARM_DESC(debug, "enable verbose debug messages");
49
50 static int no_poweroff;
51 module_param(no_poweroff, int, 0644);
52 MODULE_PARM_DESC(no_poweroff, "0 (default) powers device off when not used.\n"
53 "1 keep device energized and with tuner ready all the times.\n"
54 " Faster, but consumes more power and keeps the device hotter\n");
55
56 static char audio_std[8];
57 module_param_string(audio_std, audio_std, sizeof(audio_std), 0);
58 MODULE_PARM_DESC(audio_std,
59 "Audio standard. XC3028 audio decoder explicitly "
60 "needs to know what audio\n"
61 "standard is needed for some video standards with audio A2 or NICAM.\n"
62 "The valid values are:\n"
63 "A2\n"
64 "A2/A\n"
65 "A2/B\n"
66 "NICAM\n"
67 "NICAM/A\n"
68 "NICAM/B\n");
69
70 static char firmware_name[30];
71 module_param_string(firmware_name, firmware_name, sizeof(firmware_name), 0);
72 MODULE_PARM_DESC(firmware_name, "Firmware file name. Allows overriding the "
73 "default firmware name\n");
74
75 static LIST_HEAD(hybrid_tuner_instance_list);
76 static DEFINE_MUTEX(xc2028_list_mutex);
77
78 /* struct for storing firmware table */
79 struct firmware_description {
80 unsigned int type;
81 v4l2_std_id id;
82 __u16 int_freq;
83 unsigned char *ptr;
84 unsigned int size;
85 };
86
87 struct firmware_properties {
88 unsigned int type;
89 v4l2_std_id id;
90 v4l2_std_id std_req;
91 __u16 int_freq;
92 unsigned int scode_table;
93 int scode_nr;
94 };
95
96 enum xc2028_state {
97 XC2028_NO_FIRMWARE = 0,
98 XC2028_WAITING_FIRMWARE,
99 XC2028_ACTIVE,
100 XC2028_SLEEP,
101 XC2028_NODEV,
102 };
103
104 struct xc2028_data {
105 struct list_head hybrid_tuner_instance_list;
106 struct tuner_i2c_props i2c_props;
107 __u32 frequency;
108
109 enum xc2028_state state;
110 const char *fname;
111
112 struct firmware_description *firm;
113 int firm_size;
114 __u16 firm_version;
115
116 __u16 hwmodel;
117 __u16 hwvers;
118
119 struct xc2028_ctrl ctrl;
120
121 struct firmware_properties cur_fw;
122
123 struct mutex lock;
124 };
125
126 #define i2c_send(priv, buf, size) ({ \
127 int _rc; \
128 _rc = tuner_i2c_xfer_send(&priv->i2c_props, buf, size); \
129 if (size != _rc) \
130 tuner_info("i2c output error: rc = %d (should be %d)\n",\
131 _rc, (int)size); \
132 if (priv->ctrl.msleep) \
133 msleep(priv->ctrl.msleep); \
134 _rc; \
135 })
136
137 #define i2c_send_recv(priv, obuf, osize, ibuf, isize) ({ \
138 int _rc; \
139 _rc = tuner_i2c_xfer_send_recv(&priv->i2c_props, obuf, osize, \
140 ibuf, isize); \
141 if (isize != _rc) \
142 tuner_err("i2c input error: rc = %d (should be %d)\n", \
143 _rc, (int)isize); \
144 if (priv->ctrl.msleep) \
145 msleep(priv->ctrl.msleep); \
146 _rc; \
147 })
148
149 #define send_seq(priv, data...) ({ \
150 static u8 _val[] = data; \
151 int _rc; \
152 if (sizeof(_val) != \
153 (_rc = tuner_i2c_xfer_send(&priv->i2c_props, \
154 _val, sizeof(_val)))) { \
155 tuner_err("Error on line %d: %d\n", __LINE__, _rc); \
156 } else if (priv->ctrl.msleep) \
157 msleep(priv->ctrl.msleep); \
158 _rc; \
159 })
160
161 static int xc2028_get_reg(struct xc2028_data *priv, u16 reg, u16 *val)
162 {
163 unsigned char buf[2];
164 unsigned char ibuf[2];
165
166 tuner_dbg("%s %04x called\n", __func__, reg);
167
168 buf[0] = reg >> 8;
169 buf[1] = (unsigned char) reg;
170
171 if (i2c_send_recv(priv, buf, 2, ibuf, 2) != 2)
172 return -EIO;
173
174 *val = (ibuf[1]) | (ibuf[0] << 8);
175 return 0;
176 }
177
178 #define dump_firm_type(t) dump_firm_type_and_int_freq(t, 0)
179 static void dump_firm_type_and_int_freq(unsigned int type, u16 int_freq)
180 {
181 if (type & BASE)
182 printk("BASE ");
183 if (type & INIT1)
184 printk("INIT1 ");
185 if (type & F8MHZ)
186 printk("F8MHZ ");
187 if (type & MTS)
188 printk("MTS ");
189 if (type & D2620)
190 printk("D2620 ");
191 if (type & D2633)
192 printk("D2633 ");
193 if (type & DTV6)
194 printk("DTV6 ");
195 if (type & QAM)
196 printk("QAM ");
197 if (type & DTV7)
198 printk("DTV7 ");
199 if (type & DTV78)
200 printk("DTV78 ");
201 if (type & DTV8)
202 printk("DTV8 ");
203 if (type & FM)
204 printk("FM ");
205 if (type & INPUT1)
206 printk("INPUT1 ");
207 if (type & LCD)
208 printk("LCD ");
209 if (type & NOGD)
210 printk("NOGD ");
211 if (type & MONO)
212 printk("MONO ");
213 if (type & ATSC)
214 printk("ATSC ");
215 if (type & IF)
216 printk("IF ");
217 if (type & LG60)
218 printk("LG60 ");
219 if (type & ATI638)
220 printk("ATI638 ");
221 if (type & OREN538)
222 printk("OREN538 ");
223 if (type & OREN36)
224 printk("OREN36 ");
225 if (type & TOYOTA388)
226 printk("TOYOTA388 ");
227 if (type & TOYOTA794)
228 printk("TOYOTA794 ");
229 if (type & DIBCOM52)
230 printk("DIBCOM52 ");
231 if (type & ZARLINK456)
232 printk("ZARLINK456 ");
233 if (type & CHINA)
234 printk("CHINA ");
235 if (type & F6MHZ)
236 printk("F6MHZ ");
237 if (type & INPUT2)
238 printk("INPUT2 ");
239 if (type & SCODE)
240 printk("SCODE ");
241 if (type & HAS_IF)
242 printk("HAS_IF_%d ", int_freq);
243 }
244
245 static v4l2_std_id parse_audio_std_option(void)
246 {
247 if (strcasecmp(audio_std, "A2") == 0)
248 return V4L2_STD_A2;
249 if (strcasecmp(audio_std, "A2/A") == 0)
250 return V4L2_STD_A2_A;
251 if (strcasecmp(audio_std, "A2/B") == 0)
252 return V4L2_STD_A2_B;
253 if (strcasecmp(audio_std, "NICAM") == 0)
254 return V4L2_STD_NICAM;
255 if (strcasecmp(audio_std, "NICAM/A") == 0)
256 return V4L2_STD_NICAM_A;
257 if (strcasecmp(audio_std, "NICAM/B") == 0)
258 return V4L2_STD_NICAM_B;
259
260 return 0;
261 }
262
263 static int check_device_status(struct xc2028_data *priv)
264 {
265 switch (priv->state) {
266 case XC2028_NO_FIRMWARE:
267 case XC2028_WAITING_FIRMWARE:
268 return -EAGAIN;
269 case XC2028_ACTIVE:
270 return 1;
271 case XC2028_SLEEP:
272 return 0;
273 case XC2028_NODEV:
274 return -ENODEV;
275 }
276 return 0;
277 }
278
279 static void free_firmware(struct xc2028_data *priv)
280 {
281 int i;
282 tuner_dbg("%s called\n", __func__);
283
284 if (!priv->firm)
285 return;
286
287 for (i = 0; i < priv->firm_size; i++)
288 kfree(priv->firm[i].ptr);
289
290 kfree(priv->firm);
291
292 priv->firm = NULL;
293 priv->firm_size = 0;
294 priv->state = XC2028_NO_FIRMWARE;
295
296 memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
297 }
298
299 static int load_all_firmwares(struct dvb_frontend *fe,
300 const struct firmware *fw)
301 {
302 struct xc2028_data *priv = fe->tuner_priv;
303 const unsigned char *p, *endp;
304 int rc = 0;
305 int n, n_array;
306 char name[33];
307
308 tuner_dbg("%s called\n", __func__);
309
310 p = fw->data;
311 endp = p + fw->size;
312
313 if (fw->size < sizeof(name) - 1 + 2 + 2) {
314 tuner_err("Error: firmware file %s has invalid size!\n",
315 priv->fname);
316 goto corrupt;
317 }
318
319 memcpy(name, p, sizeof(name) - 1);
320 name[sizeof(name) - 1] = 0;
321 p += sizeof(name) - 1;
322
323 priv->firm_version = get_unaligned_le16(p);
324 p += 2;
325
326 n_array = get_unaligned_le16(p);
327 p += 2;
328
329 tuner_info("Loading %d firmware images from %s, type: %s, ver %d.%d\n",
330 n_array, priv->fname, name,
331 priv->firm_version >> 8, priv->firm_version & 0xff);
332
333 priv->firm = kcalloc(n_array, sizeof(*priv->firm), GFP_KERNEL);
334 if (priv->firm == NULL) {
335 tuner_err("Not enough memory to load firmware file.\n");
336 rc = -ENOMEM;
337 goto err;
338 }
339 priv->firm_size = n_array;
340
341 n = -1;
342 while (p < endp) {
343 __u32 type, size;
344 v4l2_std_id id;
345 __u16 int_freq = 0;
346
347 n++;
348 if (n >= n_array) {
349 tuner_err("More firmware images in file than "
350 "were expected!\n");
351 goto corrupt;
352 }
353
354 /* Checks if there's enough bytes to read */
355 if (endp - p < sizeof(type) + sizeof(id) + sizeof(size))
356 goto header;
357
358 type = get_unaligned_le32(p);
359 p += sizeof(type);
360
361 id = get_unaligned_le64(p);
362 p += sizeof(id);
363
364 if (type & HAS_IF) {
365 int_freq = get_unaligned_le16(p);
366 p += sizeof(int_freq);
367 if (endp - p < sizeof(size))
368 goto header;
369 }
370
371 size = get_unaligned_le32(p);
372 p += sizeof(size);
373
374 if (!size || size > endp - p) {
375 tuner_err("Firmware type ");
376 dump_firm_type(type);
377 printk("(%x), id %llx is corrupted "
378 "(size=%d, expected %d)\n",
379 type, (unsigned long long)id,
380 (unsigned)(endp - p), size);
381 goto corrupt;
382 }
383
384 priv->firm[n].ptr = kzalloc(size, GFP_KERNEL);
385 if (priv->firm[n].ptr == NULL) {
386 tuner_err("Not enough memory to load firmware file.\n");
387 rc = -ENOMEM;
388 goto err;
389 }
390 tuner_dbg("Reading firmware type ");
391 if (debug) {
392 dump_firm_type_and_int_freq(type, int_freq);
393 printk("(%x), id %llx, size=%d.\n",
394 type, (unsigned long long)id, size);
395 }
396
397 memcpy(priv->firm[n].ptr, p, size);
398 priv->firm[n].type = type;
399 priv->firm[n].id = id;
400 priv->firm[n].size = size;
401 priv->firm[n].int_freq = int_freq;
402
403 p += size;
404 }
405
406 if (n + 1 != priv->firm_size) {
407 tuner_err("Firmware file is incomplete!\n");
408 goto corrupt;
409 }
410
411 goto done;
412
413 header:
414 tuner_err("Firmware header is incomplete!\n");
415 corrupt:
416 rc = -EINVAL;
417 tuner_err("Error: firmware file is corrupted!\n");
418
419 err:
420 tuner_info("Releasing partially loaded firmware file.\n");
421 free_firmware(priv);
422
423 done:
424 if (rc == 0)
425 tuner_dbg("Firmware files loaded.\n");
426 else
427 priv->state = XC2028_NODEV;
428
429 return rc;
430 }
431
432 static int seek_firmware(struct dvb_frontend *fe, unsigned int type,
433 v4l2_std_id *id)
434 {
435 struct xc2028_data *priv = fe->tuner_priv;
436 int i, best_i = -1, best_nr_matches = 0;
437 unsigned int type_mask = 0;
438
439 tuner_dbg("%s called, want type=", __func__);
440 if (debug) {
441 dump_firm_type(type);
442 printk("(%x), id %016llx.\n", type, (unsigned long long)*id);
443 }
444
445 if (!priv->firm) {
446 tuner_err("Error! firmware not loaded\n");
447 return -EINVAL;
448 }
449
450 if (((type & ~SCODE) == 0) && (*id == 0))
451 *id = V4L2_STD_PAL;
452
453 if (type & BASE)
454 type_mask = BASE_TYPES;
455 else if (type & SCODE) {
456 type &= SCODE_TYPES;
457 type_mask = SCODE_TYPES & ~HAS_IF;
458 } else if (type & DTV_TYPES)
459 type_mask = DTV_TYPES;
460 else if (type & STD_SPECIFIC_TYPES)
461 type_mask = STD_SPECIFIC_TYPES;
462
463 type &= type_mask;
464
465 if (!(type & SCODE))
466 type_mask = ~0;
467
468 /* Seek for exact match */
469 for (i = 0; i < priv->firm_size; i++) {
470 if ((type == (priv->firm[i].type & type_mask)) &&
471 (*id == priv->firm[i].id))
472 goto found;
473 }
474
475 /* Seek for generic video standard match */
476 for (i = 0; i < priv->firm_size; i++) {
477 v4l2_std_id match_mask;
478 int nr_matches;
479
480 if (type != (priv->firm[i].type & type_mask))
481 continue;
482
483 match_mask = *id & priv->firm[i].id;
484 if (!match_mask)
485 continue;
486
487 if ((*id & match_mask) == *id)
488 goto found; /* Supports all the requested standards */
489
490 nr_matches = hweight64(match_mask);
491 if (nr_matches > best_nr_matches) {
492 best_nr_matches = nr_matches;
493 best_i = i;
494 }
495 }
496
497 if (best_nr_matches > 0) {
498 tuner_dbg("Selecting best matching firmware (%d bits) for "
499 "type=", best_nr_matches);
500 dump_firm_type(type);
501 printk("(%x), id %016llx:\n", type, (unsigned long long)*id);
502 i = best_i;
503 goto found;
504 }
505
506 /*FIXME: Would make sense to seek for type "hint" match ? */
507
508 i = -ENOENT;
509 goto ret;
510
511 found:
512 *id = priv->firm[i].id;
513
514 ret:
515 tuner_dbg("%s firmware for type=", (i < 0) ? "Can't find" : "Found");
516 if (debug) {
517 dump_firm_type(type);
518 printk("(%x), id %016llx.\n", type, (unsigned long long)*id);
519 }
520 return i;
521 }
522
523 static inline int do_tuner_callback(struct dvb_frontend *fe, int cmd, int arg)
524 {
525 struct xc2028_data *priv = fe->tuner_priv;
526
527 /* analog side (tuner-core) uses i2c_adap->algo_data.
528 * digital side is not guaranteed to have algo_data defined.
529 *
530 * digital side will always have fe->dvb defined.
531 * analog side (tuner-core) doesn't (yet) define fe->dvb.
532 */
533
534 return (!fe->callback) ? -EINVAL :
535 fe->callback(((fe->dvb) && (fe->dvb->priv)) ?
536 fe->dvb->priv : priv->i2c_props.adap->algo_data,
537 DVB_FRONTEND_COMPONENT_TUNER, cmd, arg);
538 }
539
540 static int load_firmware(struct dvb_frontend *fe, unsigned int type,
541 v4l2_std_id *id)
542 {
543 struct xc2028_data *priv = fe->tuner_priv;
544 int pos, rc;
545 unsigned char *p, *endp, buf[MAX_XFER_SIZE];
546
547 if (priv->ctrl.max_len > sizeof(buf))
548 priv->ctrl.max_len = sizeof(buf);
549
550 tuner_dbg("%s called\n", __func__);
551
552 pos = seek_firmware(fe, type, id);
553 if (pos < 0)
554 return pos;
555
556 tuner_info("Loading firmware for type=");
557 dump_firm_type(priv->firm[pos].type);
558 printk("(%x), id %016llx.\n", priv->firm[pos].type,
559 (unsigned long long)*id);
560
561 p = priv->firm[pos].ptr;
562 endp = p + priv->firm[pos].size;
563
564 while (p < endp) {
565 __u16 size;
566
567 /* Checks if there's enough bytes to read */
568 if (p + sizeof(size) > endp) {
569 tuner_err("Firmware chunk size is wrong\n");
570 return -EINVAL;
571 }
572
573 size = le16_to_cpu(*(__le16 *) p);
574 p += sizeof(size);
575
576 if (size == 0xffff)
577 return 0;
578
579 if (!size) {
580 /* Special callback command received */
581 rc = do_tuner_callback(fe, XC2028_TUNER_RESET, 0);
582 if (rc < 0) {
583 tuner_err("Error at RESET code %d\n",
584 (*p) & 0x7f);
585 return -EINVAL;
586 }
587 continue;
588 }
589 if (size >= 0xff00) {
590 switch (size) {
591 case 0xff00:
592 rc = do_tuner_callback(fe, XC2028_RESET_CLK, 0);
593 if (rc < 0) {
594 tuner_err("Error at RESET code %d\n",
595 (*p) & 0x7f);
596 return -EINVAL;
597 }
598 break;
599 default:
600 tuner_info("Invalid RESET code %d\n",
601 size & 0x7f);
602 return -EINVAL;
603
604 }
605 continue;
606 }
607
608 /* Checks for a sleep command */
609 if (size & 0x8000) {
610 msleep(size & 0x7fff);
611 continue;
612 }
613
614 if ((size + p > endp)) {
615 tuner_err("missing bytes: need %d, have %d\n",
616 size, (int)(endp - p));
617 return -EINVAL;
618 }
619
620 buf[0] = *p;
621 p++;
622 size--;
623
624 /* Sends message chunks */
625 while (size > 0) {
626 int len = (size < priv->ctrl.max_len - 1) ?
627 size : priv->ctrl.max_len - 1;
628
629 memcpy(buf + 1, p, len);
630
631 rc = i2c_send(priv, buf, len + 1);
632 if (rc < 0) {
633 tuner_err("%d returned from send\n", rc);
634 return -EINVAL;
635 }
636
637 p += len;
638 size -= len;
639 }
640
641 /* silently fail if the frontend doesn't support I2C flush */
642 rc = do_tuner_callback(fe, XC2028_I2C_FLUSH, 0);
643 if ((rc < 0) && (rc != -EINVAL)) {
644 tuner_err("error executing flush: %d\n", rc);
645 return rc;
646 }
647 }
648 return 0;
649 }
650
651 static int load_scode(struct dvb_frontend *fe, unsigned int type,
652 v4l2_std_id *id, __u16 int_freq, int scode)
653 {
654 struct xc2028_data *priv = fe->tuner_priv;
655 int pos, rc;
656 unsigned char *p;
657
658 tuner_dbg("%s called\n", __func__);
659
660 if (!int_freq) {
661 pos = seek_firmware(fe, type, id);
662 if (pos < 0)
663 return pos;
664 } else {
665 for (pos = 0; pos < priv->firm_size; pos++) {
666 if ((priv->firm[pos].int_freq == int_freq) &&
667 (priv->firm[pos].type & HAS_IF))
668 break;
669 }
670 if (pos == priv->firm_size)
671 return -ENOENT;
672 }
673
674 p = priv->firm[pos].ptr;
675
676 if (priv->firm[pos].type & HAS_IF) {
677 if (priv->firm[pos].size != 12 * 16 || scode >= 16)
678 return -EINVAL;
679 p += 12 * scode;
680 } else {
681 /* 16 SCODE entries per file; each SCODE entry is 12 bytes and
682 * has a 2-byte size header in the firmware format. */
683 if (priv->firm[pos].size != 14 * 16 || scode >= 16 ||
684 le16_to_cpu(*(__le16 *)(p + 14 * scode)) != 12)
685 return -EINVAL;
686 p += 14 * scode + 2;
687 }
688
689 tuner_info("Loading SCODE for type=");
690 dump_firm_type_and_int_freq(priv->firm[pos].type,
691 priv->firm[pos].int_freq);
692 printk("(%x), id %016llx.\n", priv->firm[pos].type,
693 (unsigned long long)*id);
694
695 if (priv->firm_version < 0x0202)
696 rc = send_seq(priv, {0x20, 0x00, 0x00, 0x00});
697 else
698 rc = send_seq(priv, {0xa0, 0x00, 0x00, 0x00});
699 if (rc < 0)
700 return -EIO;
701
702 rc = i2c_send(priv, p, 12);
703 if (rc < 0)
704 return -EIO;
705
706 rc = send_seq(priv, {0x00, 0x8c});
707 if (rc < 0)
708 return -EIO;
709
710 return 0;
711 }
712
713 static int xc2028_sleep(struct dvb_frontend *fe);
714
715 static int check_firmware(struct dvb_frontend *fe, unsigned int type,
716 v4l2_std_id std, __u16 int_freq)
717 {
718 struct xc2028_data *priv = fe->tuner_priv;
719 struct firmware_properties new_fw;
720 int rc, retry_count = 0;
721 u16 version, hwmodel;
722 v4l2_std_id std0;
723
724 tuner_dbg("%s called\n", __func__);
725
726 rc = check_device_status(priv);
727 if (rc < 0)
728 return rc;
729
730 if (priv->ctrl.mts && !(type & FM))
731 type |= MTS;
732
733 retry:
734 new_fw.type = type;
735 new_fw.id = std;
736 new_fw.std_req = std;
737 new_fw.scode_table = SCODE | priv->ctrl.scode_table;
738 new_fw.scode_nr = 0;
739 new_fw.int_freq = int_freq;
740
741 tuner_dbg("checking firmware, user requested type=");
742 if (debug) {
743 dump_firm_type(new_fw.type);
744 printk("(%x), id %016llx, ", new_fw.type,
745 (unsigned long long)new_fw.std_req);
746 if (!int_freq) {
747 printk("scode_tbl ");
748 dump_firm_type(priv->ctrl.scode_table);
749 printk("(%x), ", priv->ctrl.scode_table);
750 } else
751 printk("int_freq %d, ", new_fw.int_freq);
752 printk("scode_nr %d\n", new_fw.scode_nr);
753 }
754
755 /*
756 * No need to reload base firmware if it matches and if the tuner
757 * is not at sleep mode
758 */
759 if ((priv->state == XC2028_ACTIVE) &&
760 (((BASE | new_fw.type) & BASE_TYPES) ==
761 (priv->cur_fw.type & BASE_TYPES))) {
762 tuner_dbg("BASE firmware not changed.\n");
763 goto skip_base;
764 }
765
766 /* Updating BASE - forget about all currently loaded firmware */
767 memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
768
769 /* Reset is needed before loading firmware */
770 rc = do_tuner_callback(fe, XC2028_TUNER_RESET, 0);
771 if (rc < 0)
772 goto fail;
773
774 /* BASE firmwares are all std0 */
775 std0 = 0;
776 rc = load_firmware(fe, BASE | new_fw.type, &std0);
777 if (rc < 0) {
778 tuner_err("Error %d while loading base firmware\n",
779 rc);
780 goto fail;
781 }
782
783 /* Load INIT1, if needed */
784 tuner_dbg("Load init1 firmware, if exists\n");
785
786 rc = load_firmware(fe, BASE | INIT1 | new_fw.type, &std0);
787 if (rc == -ENOENT)
788 rc = load_firmware(fe, (BASE | INIT1 | new_fw.type) & ~F8MHZ,
789 &std0);
790 if (rc < 0 && rc != -ENOENT) {
791 tuner_err("Error %d while loading init1 firmware\n",
792 rc);
793 goto fail;
794 }
795
796 skip_base:
797 /*
798 * No need to reload standard specific firmware if base firmware
799 * was not reloaded and requested video standards have not changed.
800 */
801 if (priv->cur_fw.type == (BASE | new_fw.type) &&
802 priv->cur_fw.std_req == std) {
803 tuner_dbg("Std-specific firmware already loaded.\n");
804 goto skip_std_specific;
805 }
806
807 /* Reloading std-specific firmware forces a SCODE update */
808 priv->cur_fw.scode_table = 0;
809
810 rc = load_firmware(fe, new_fw.type, &new_fw.id);
811 if (rc == -ENOENT)
812 rc = load_firmware(fe, new_fw.type & ~F8MHZ, &new_fw.id);
813
814 if (rc < 0)
815 goto fail;
816
817 skip_std_specific:
818 if (priv->cur_fw.scode_table == new_fw.scode_table &&
819 priv->cur_fw.scode_nr == new_fw.scode_nr) {
820 tuner_dbg("SCODE firmware already loaded.\n");
821 goto check_device;
822 }
823
824 if (new_fw.type & FM)
825 goto check_device;
826
827 /* Load SCODE firmware, if exists */
828 tuner_dbg("Trying to load scode %d\n", new_fw.scode_nr);
829
830 rc = load_scode(fe, new_fw.type | new_fw.scode_table, &new_fw.id,
831 new_fw.int_freq, new_fw.scode_nr);
832
833 check_device:
834 if (xc2028_get_reg(priv, 0x0004, &version) < 0 ||
835 xc2028_get_reg(priv, 0x0008, &hwmodel) < 0) {
836 tuner_err("Unable to read tuner registers.\n");
837 goto fail;
838 }
839
840 tuner_dbg("Device is Xceive %d version %d.%d, "
841 "firmware version %d.%d\n",
842 hwmodel, (version & 0xf000) >> 12, (version & 0xf00) >> 8,
843 (version & 0xf0) >> 4, version & 0xf);
844
845
846 if (priv->ctrl.read_not_reliable)
847 goto read_not_reliable;
848
849 /* Check firmware version against what we downloaded. */
850 if (priv->firm_version != ((version & 0xf0) << 4 | (version & 0x0f))) {
851 if (!priv->ctrl.read_not_reliable) {
852 tuner_err("Incorrect readback of firmware version.\n");
853 goto fail;
854 } else {
855 tuner_err("Returned an incorrect version. However, "
856 "read is not reliable enough. Ignoring it.\n");
857 hwmodel = 3028;
858 }
859 }
860
861 /* Check that the tuner hardware model remains consistent over time. */
862 if (priv->hwmodel == 0 && (hwmodel == 2028 || hwmodel == 3028)) {
863 priv->hwmodel = hwmodel;
864 priv->hwvers = version & 0xff00;
865 } else if (priv->hwmodel == 0 || priv->hwmodel != hwmodel ||
866 priv->hwvers != (version & 0xff00)) {
867 tuner_err("Read invalid device hardware information - tuner "
868 "hung?\n");
869 goto fail;
870 }
871
872 read_not_reliable:
873 priv->cur_fw = new_fw;
874
875 /*
876 * By setting BASE in cur_fw.type only after successfully loading all
877 * firmwares, we can:
878 * 1. Identify that BASE firmware with type=0 has been loaded;
879 * 2. Tell whether BASE firmware was just changed the next time through.
880 */
881 priv->cur_fw.type |= BASE;
882 priv->state = XC2028_ACTIVE;
883
884 return 0;
885
886 fail:
887 priv->state = XC2028_NO_FIRMWARE;
888
889 memset(&priv->cur_fw, 0, sizeof(priv->cur_fw));
890 if (retry_count < 8) {
891 msleep(50);
892 retry_count++;
893 tuner_dbg("Retrying firmware load\n");
894 goto retry;
895 }
896
897 /* Firmware didn't load. Put the device to sleep */
898 xc2028_sleep(fe);
899
900 if (rc == -ENOENT)
901 rc = -EINVAL;
902 return rc;
903 }
904
905 static int xc2028_signal(struct dvb_frontend *fe, u16 *strength)
906 {
907 struct xc2028_data *priv = fe->tuner_priv;
908 u16 frq_lock, signal = 0;
909 int rc, i;
910
911 tuner_dbg("%s called\n", __func__);
912
913 rc = check_device_status(priv);
914 if (rc < 0)
915 return rc;
916
917 /* If the device is sleeping, no channel is tuned */
918 if (!rc) {
919 *strength = 0;
920 return 0;
921 }
922
923 mutex_lock(&priv->lock);
924
925 /* Sync Lock Indicator */
926 for (i = 0; i < 3; i++) {
927 rc = xc2028_get_reg(priv, XREG_LOCK, &frq_lock);
928 if (rc < 0)
929 goto ret;
930
931 if (frq_lock)
932 break;
933 msleep(6);
934 }
935
936 /* Frequency didn't lock */
937 if (frq_lock == 2)
938 goto ret;
939
940 /* Get SNR of the video signal */
941 rc = xc2028_get_reg(priv, XREG_SNR, &signal);
942 if (rc < 0)
943 goto ret;
944
945 /* Signal level is 3 bits only */
946
947 signal = ((1 << 12) - 1) | ((signal & 0x07) << 12);
948
949 ret:
950 mutex_unlock(&priv->lock);
951
952 *strength = signal;
953
954 tuner_dbg("signal strength is %d\n", signal);
955
956 return rc;
957 }
958
959 static int xc2028_get_afc(struct dvb_frontend *fe, s32 *afc)
960 {
961 struct xc2028_data *priv = fe->tuner_priv;
962 int i, rc;
963 u16 frq_lock = 0;
964 s16 afc_reg = 0;
965
966 rc = check_device_status(priv);
967 if (rc < 0)
968 return rc;
969
970 /* If the device is sleeping, no channel is tuned */
971 if (!rc) {
972 *afc = 0;
973 return 0;
974 }
975
976 mutex_lock(&priv->lock);
977
978 /* Sync Lock Indicator */
979 for (i = 0; i < 3; i++) {
980 rc = xc2028_get_reg(priv, XREG_LOCK, &frq_lock);
981 if (rc < 0)
982 goto ret;
983
984 if (frq_lock)
985 break;
986 msleep(6);
987 }
988
989 /* Frequency didn't lock */
990 if (frq_lock == 2)
991 goto ret;
992
993 /* Get AFC */
994 rc = xc2028_get_reg(priv, XREG_FREQ_ERROR, &afc_reg);
995 if (rc < 0)
996 goto ret;
997
998 *afc = afc_reg * 15625; /* Hz */
999
1000 tuner_dbg("AFC is %d Hz\n", *afc);
1001
1002 ret:
1003 mutex_unlock(&priv->lock);
1004
1005 return rc;
1006 }
1007
1008 #define DIV 15625
1009
1010 static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */,
1011 enum v4l2_tuner_type new_type,
1012 unsigned int type,
1013 v4l2_std_id std,
1014 u16 int_freq)
1015 {
1016 struct xc2028_data *priv = fe->tuner_priv;
1017 int rc = -EINVAL;
1018 unsigned char buf[4];
1019 u32 div, offset = 0;
1020
1021 tuner_dbg("%s called\n", __func__);
1022
1023 mutex_lock(&priv->lock);
1024
1025 tuner_dbg("should set frequency %d kHz\n", freq / 1000);
1026
1027 if (check_firmware(fe, type, std, int_freq) < 0)
1028 goto ret;
1029
1030 /* On some cases xc2028 can disable video output, if
1031 * very weak signals are received. By sending a soft
1032 * reset, this is re-enabled. So, it is better to always
1033 * send a soft reset before changing channels, to be sure
1034 * that xc2028 will be in a safe state.
1035 * Maybe this might also be needed for DTV.
1036 */
1037 switch (new_type) {
1038 case V4L2_TUNER_ANALOG_TV:
1039 rc = send_seq(priv, {0x00, 0x00});
1040
1041 /* Analog mode requires offset = 0 */
1042 break;
1043 case V4L2_TUNER_RADIO:
1044 /* Radio mode requires offset = 0 */
1045 break;
1046 case V4L2_TUNER_DIGITAL_TV:
1047 /*
1048 * Digital modes require an offset to adjust to the
1049 * proper frequency. The offset depends on what
1050 * firmware version is used.
1051 */
1052
1053 /*
1054 * Adjust to the center frequency. This is calculated by the
1055 * formula: offset = 1.25MHz - BW/2
1056 * For DTV 7/8, the firmware uses BW = 8000, so it needs a
1057 * further adjustment to get the frequency center on VHF
1058 */
1059
1060 /*
1061 * The firmware DTV78 used to work fine in UHF band (8 MHz
1062 * bandwidth) but not at all in VHF band (7 MHz bandwidth).
1063 * The real problem was connected to the formula used to
1064 * calculate the center frequency offset in VHF band.
1065 * In fact, removing the 500KHz adjustment fixed the problem.
1066 * This is coherent to what was implemented for the DTV7
1067 * firmware.
1068 * In the end, now the center frequency is the same for all 3
1069 * firmwares (DTV7, DTV8, DTV78) and doesn't depend on channel
1070 * bandwidth.
1071 */
1072
1073 if (priv->cur_fw.type & DTV6)
1074 offset = 1750000;
1075 else /* DTV7 or DTV8 or DTV78 */
1076 offset = 2750000;
1077
1078 /*
1079 * xc3028 additional "magic"
1080 * Depending on the firmware version, it needs some adjustments
1081 * to properly centralize the frequency. This seems to be
1082 * needed to compensate the SCODE table adjustments made by
1083 * newer firmwares
1084 */
1085
1086 /*
1087 * The proper adjustment would be to do it at s-code table.
1088 * However, this didn't work, as reported by
1089 * Robert Lowery <rglowery@exemail.com.au>
1090 */
1091
1092 #if 0
1093 /*
1094 * Still need tests for XC3028L (firmware 3.2 or upper)
1095 * So, for now, let's just comment the per-firmware
1096 * version of this change. Reports with xc3028l working
1097 * with and without the lines bellow are welcome
1098 */
1099
1100 if (priv->firm_version < 0x0302) {
1101 if (priv->cur_fw.type & DTV7)
1102 offset += 500000;
1103 } else {
1104 if (priv->cur_fw.type & DTV7)
1105 offset -= 300000;
1106 else if (type != ATSC) /* DVB @6MHz, DTV 8 and DTV 7/8 */
1107 offset += 200000;
1108 }
1109 #endif
1110 break;
1111 default:
1112 tuner_err("Unsupported tuner type %d.\n", new_type);
1113 break;
1114 }
1115
1116 div = (freq - offset + DIV / 2) / DIV;
1117
1118 /* CMD= Set frequency */
1119 if (priv->firm_version < 0x0202)
1120 rc = send_seq(priv, {0x00, XREG_RF_FREQ, 0x00, 0x00});
1121 else
1122 rc = send_seq(priv, {0x80, XREG_RF_FREQ, 0x00, 0x00});
1123 if (rc < 0)
1124 goto ret;
1125
1126 /* Return code shouldn't be checked.
1127 The reset CLK is needed only with tm6000.
1128 Driver should work fine even if this fails.
1129 */
1130 if (priv->ctrl.msleep)
1131 msleep(priv->ctrl.msleep);
1132 do_tuner_callback(fe, XC2028_RESET_CLK, 1);
1133
1134 msleep(10);
1135
1136 buf[0] = 0xff & (div >> 24);
1137 buf[1] = 0xff & (div >> 16);
1138 buf[2] = 0xff & (div >> 8);
1139 buf[3] = 0xff & (div);
1140
1141 rc = i2c_send(priv, buf, sizeof(buf));
1142 if (rc < 0)
1143 goto ret;
1144 msleep(100);
1145
1146 priv->frequency = freq;
1147
1148 tuner_dbg("divisor= %*ph (freq=%d.%03d)\n", 4, buf,
1149 freq / 1000000, (freq % 1000000) / 1000);
1150
1151 rc = 0;
1152
1153 ret:
1154 mutex_unlock(&priv->lock);
1155
1156 return rc;
1157 }
1158
1159 static int xc2028_set_analog_freq(struct dvb_frontend *fe,
1160 struct analog_parameters *p)
1161 {
1162 struct xc2028_data *priv = fe->tuner_priv;
1163 unsigned int type=0;
1164
1165 tuner_dbg("%s called\n", __func__);
1166
1167 if (p->mode == V4L2_TUNER_RADIO) {
1168 type |= FM;
1169 if (priv->ctrl.input1)
1170 type |= INPUT1;
1171 return generic_set_freq(fe, (625l * p->frequency) / 10,
1172 V4L2_TUNER_RADIO, type, 0, 0);
1173 }
1174
1175 /* if std is not defined, choose one */
1176 if (!p->std)
1177 p->std = V4L2_STD_MN;
1178
1179 /* PAL/M, PAL/N, PAL/Nc and NTSC variants should use 6MHz firmware */
1180 if (!(p->std & V4L2_STD_MN))
1181 type |= F8MHZ;
1182
1183 /* Add audio hack to std mask */
1184 p->std |= parse_audio_std_option();
1185
1186 return generic_set_freq(fe, 62500l * p->frequency,
1187 V4L2_TUNER_ANALOG_TV, type, p->std, 0);
1188 }
1189
1190 static int xc2028_set_params(struct dvb_frontend *fe)
1191 {
1192 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1193 u32 delsys = c->delivery_system;
1194 u32 bw = c->bandwidth_hz;
1195 struct xc2028_data *priv = fe->tuner_priv;
1196 int rc;
1197 unsigned int type = 0;
1198 u16 demod = 0;
1199
1200 tuner_dbg("%s called\n", __func__);
1201
1202 rc = check_device_status(priv);
1203 if (rc < 0)
1204 return rc;
1205
1206 switch (delsys) {
1207 case SYS_DVBT:
1208 case SYS_DVBT2:
1209 /*
1210 * The only countries with 6MHz seem to be Taiwan/Uruguay.
1211 * Both seem to require QAM firmware for OFDM decoding
1212 * Tested in Taiwan by Terry Wu <terrywu2009@gmail.com>
1213 */
1214 if (bw <= 6000000)
1215 type |= QAM;
1216
1217 switch (priv->ctrl.type) {
1218 case XC2028_D2633:
1219 type |= D2633;
1220 break;
1221 case XC2028_D2620:
1222 type |= D2620;
1223 break;
1224 case XC2028_AUTO:
1225 default:
1226 /* Zarlink seems to need D2633 */
1227 if (priv->ctrl.demod == XC3028_FE_ZARLINK456)
1228 type |= D2633;
1229 else
1230 type |= D2620;
1231 }
1232 break;
1233 case SYS_ATSC:
1234 /* The only ATSC firmware (at least on v2.7) is D2633 */
1235 type |= ATSC | D2633;
1236 break;
1237 /* DVB-S and pure QAM (FE_QAM) are not supported */
1238 default:
1239 return -EINVAL;
1240 }
1241
1242 if (bw <= 6000000) {
1243 type |= DTV6;
1244 priv->ctrl.vhfbw7 = 0;
1245 priv->ctrl.uhfbw8 = 0;
1246 } else if (bw <= 7000000) {
1247 if (c->frequency < 470000000)
1248 priv->ctrl.vhfbw7 = 1;
1249 else
1250 priv->ctrl.uhfbw8 = 0;
1251 type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV7;
1252 type |= F8MHZ;
1253 } else {
1254 if (c->frequency < 470000000)
1255 priv->ctrl.vhfbw7 = 0;
1256 else
1257 priv->ctrl.uhfbw8 = 1;
1258 type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV8;
1259 type |= F8MHZ;
1260 }
1261
1262 /* All S-code tables need a 200kHz shift */
1263 if (priv->ctrl.demod) {
1264 demod = priv->ctrl.demod;
1265
1266 /*
1267 * Newer firmwares require a 200 kHz offset only for ATSC
1268 */
1269 if (type == ATSC || priv->firm_version < 0x0302)
1270 demod += 200;
1271 /*
1272 * The DTV7 S-code table needs a 700 kHz shift.
1273 *
1274 * DTV7 is only used in Australia. Germany or Italy may also
1275 * use this firmware after initialization, but a tune to a UHF
1276 * channel should then cause DTV78 to be used.
1277 *
1278 * Unfortunately, on real-field tests, the s-code offset
1279 * didn't work as expected, as reported by
1280 * Robert Lowery <rglowery@exemail.com.au>
1281 */
1282 }
1283
1284 return generic_set_freq(fe, c->frequency,
1285 V4L2_TUNER_DIGITAL_TV, type, 0, demod);
1286 }
1287
1288 static int xc2028_sleep(struct dvb_frontend *fe)
1289 {
1290 struct xc2028_data *priv = fe->tuner_priv;
1291 int rc;
1292
1293 rc = check_device_status(priv);
1294 if (rc < 0)
1295 return rc;
1296
1297 /* Device is already in sleep mode */
1298 if (!rc)
1299 return 0;
1300
1301 /* Avoid firmware reload on slow devices or if PM disabled */
1302 if (no_poweroff || priv->ctrl.disable_power_mgmt)
1303 return 0;
1304
1305 tuner_dbg("Putting xc2028/3028 into poweroff mode.\n");
1306 if (debug > 1) {
1307 tuner_dbg("Printing sleep stack trace:\n");
1308 dump_stack();
1309 }
1310
1311 mutex_lock(&priv->lock);
1312
1313 if (priv->firm_version < 0x0202)
1314 rc = send_seq(priv, {0x00, XREG_POWER_DOWN, 0x00, 0x00});
1315 else
1316 rc = send_seq(priv, {0x80, XREG_POWER_DOWN, 0x00, 0x00});
1317
1318 if (rc >= 0)
1319 priv->state = XC2028_SLEEP;
1320
1321 mutex_unlock(&priv->lock);
1322
1323 return rc;
1324 }
1325
1326 static int xc2028_dvb_release(struct dvb_frontend *fe)
1327 {
1328 struct xc2028_data *priv = fe->tuner_priv;
1329
1330 tuner_dbg("%s called\n", __func__);
1331
1332 mutex_lock(&xc2028_list_mutex);
1333
1334 /* only perform final cleanup if this is the last instance */
1335 if (hybrid_tuner_report_instance_count(priv) == 1) {
1336 free_firmware(priv);
1337 kfree(priv->ctrl.fname);
1338 priv->ctrl.fname = NULL;
1339 }
1340
1341 if (priv)
1342 hybrid_tuner_release_state(priv);
1343
1344 mutex_unlock(&xc2028_list_mutex);
1345
1346 fe->tuner_priv = NULL;
1347
1348 return 0;
1349 }
1350
1351 static int xc2028_get_frequency(struct dvb_frontend *fe, u32 *frequency)
1352 {
1353 struct xc2028_data *priv = fe->tuner_priv;
1354 int rc;
1355
1356 tuner_dbg("%s called\n", __func__);
1357
1358 rc = check_device_status(priv);
1359 if (rc < 0)
1360 return rc;
1361
1362 *frequency = priv->frequency;
1363
1364 return 0;
1365 }
1366
1367 static void load_firmware_cb(const struct firmware *fw,
1368 void *context)
1369 {
1370 struct dvb_frontend *fe = context;
1371 struct xc2028_data *priv = fe->tuner_priv;
1372 int rc;
1373
1374 tuner_dbg("request_firmware_nowait(): %s\n", fw ? "OK" : "error");
1375 if (!fw) {
1376 tuner_err("Could not load firmware %s.\n", priv->fname);
1377 priv->state = XC2028_NODEV;
1378 return;
1379 }
1380
1381 rc = load_all_firmwares(fe, fw);
1382
1383 release_firmware(fw);
1384
1385 if (rc < 0)
1386 return;
1387 priv->state = XC2028_ACTIVE;
1388 }
1389
1390 static int xc2028_set_config(struct dvb_frontend *fe, void *priv_cfg)
1391 {
1392 struct xc2028_data *priv = fe->tuner_priv;
1393 struct xc2028_ctrl *p = priv_cfg;
1394 int rc = 0;
1395
1396 tuner_dbg("%s called\n", __func__);
1397
1398 mutex_lock(&priv->lock);
1399
1400 /*
1401 * Copy the config data.
1402 * For the firmware name, keep a local copy of the string,
1403 * in order to avoid troubles during device release.
1404 */
1405 kfree(priv->ctrl.fname);
1406 memcpy(&priv->ctrl, p, sizeof(priv->ctrl));
1407 if (p->fname) {
1408 priv->ctrl.fname = kstrdup(p->fname, GFP_KERNEL);
1409 if (priv->ctrl.fname == NULL)
1410 rc = -ENOMEM;
1411 }
1412
1413 /*
1414 * If firmware name changed, frees firmware. As free_firmware will
1415 * reset the status to NO_FIRMWARE, this forces a new request_firmware
1416 */
1417 if (!firmware_name[0] && p->fname &&
1418 priv->fname && strcmp(p->fname, priv->fname))
1419 free_firmware(priv);
1420
1421 if (priv->ctrl.max_len < 9)
1422 priv->ctrl.max_len = 13;
1423
1424 if (priv->state == XC2028_NO_FIRMWARE) {
1425 if (!firmware_name[0])
1426 priv->fname = priv->ctrl.fname;
1427 else
1428 priv->fname = firmware_name;
1429
1430 rc = request_firmware_nowait(THIS_MODULE, 1,
1431 priv->fname,
1432 priv->i2c_props.adap->dev.parent,
1433 GFP_KERNEL,
1434 fe, load_firmware_cb);
1435 if (rc < 0) {
1436 tuner_err("Failed to request firmware %s\n",
1437 priv->fname);
1438 priv->state = XC2028_NODEV;
1439 } else
1440 priv->state = XC2028_WAITING_FIRMWARE;
1441 }
1442 mutex_unlock(&priv->lock);
1443
1444 return rc;
1445 }
1446
1447 static const struct dvb_tuner_ops xc2028_dvb_tuner_ops = {
1448 .info = {
1449 .name = "Xceive XC3028",
1450 .frequency_min = 42000000,
1451 .frequency_max = 864000000,
1452 .frequency_step = 50000,
1453 },
1454
1455 .set_config = xc2028_set_config,
1456 .set_analog_params = xc2028_set_analog_freq,
1457 .release = xc2028_dvb_release,
1458 .get_frequency = xc2028_get_frequency,
1459 .get_rf_strength = xc2028_signal,
1460 .get_afc = xc2028_get_afc,
1461 .set_params = xc2028_set_params,
1462 .sleep = xc2028_sleep,
1463 };
1464
1465 struct dvb_frontend *xc2028_attach(struct dvb_frontend *fe,
1466 struct xc2028_config *cfg)
1467 {
1468 struct xc2028_data *priv;
1469 int instance;
1470
1471 if (debug)
1472 printk(KERN_DEBUG "xc2028: Xcv2028/3028 init called!\n");
1473
1474 if (NULL == cfg)
1475 return NULL;
1476
1477 if (!fe) {
1478 printk(KERN_ERR "xc2028: No frontend!\n");
1479 return NULL;
1480 }
1481
1482 mutex_lock(&xc2028_list_mutex);
1483
1484 instance = hybrid_tuner_request_state(struct xc2028_data, priv,
1485 hybrid_tuner_instance_list,
1486 cfg->i2c_adap, cfg->i2c_addr,
1487 "xc2028");
1488 switch (instance) {
1489 case 0:
1490 /* memory allocation failure */
1491 goto fail;
1492 break;
1493 case 1:
1494 /* new tuner instance */
1495 priv->ctrl.max_len = 13;
1496
1497 mutex_init(&priv->lock);
1498
1499 fe->tuner_priv = priv;
1500 break;
1501 case 2:
1502 /* existing tuner instance */
1503 fe->tuner_priv = priv;
1504 break;
1505 }
1506
1507 memcpy(&fe->ops.tuner_ops, &xc2028_dvb_tuner_ops,
1508 sizeof(xc2028_dvb_tuner_ops));
1509
1510 tuner_info("type set to %s\n", "XCeive xc2028/xc3028 tuner");
1511
1512 if (cfg->ctrl)
1513 xc2028_set_config(fe, cfg->ctrl);
1514
1515 mutex_unlock(&xc2028_list_mutex);
1516
1517 return fe;
1518 fail:
1519 mutex_unlock(&xc2028_list_mutex);
1520
1521 xc2028_dvb_release(fe);
1522 return NULL;
1523 }
1524
1525 EXPORT_SYMBOL(xc2028_attach);
1526
1527 MODULE_DESCRIPTION("Xceive xc2028/xc3028 tuner driver");
1528 MODULE_AUTHOR("Michel Ludwig <michel.ludwig@gmail.com>");
1529 MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>");
1530 MODULE_LICENSE("GPL");
1531 MODULE_FIRMWARE(XC2028_DEFAULT_FIRMWARE);
1532 MODULE_FIRMWARE(XC3028L_DEFAULT_FIRMWARE);
Linux with added FPC-III support