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