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UBUNTU: Ubuntu-4.13.0-45.50
[mirror_ubuntu-artful-kernel.git] / drivers / media / dvb-frontends / lg2160.c
CommitLineData
e26f2ae4
MK		 1/*
2 * Support for LG2160 - ATSC/MH
3 *
4 * Copyright (C) 2010 Michael Krufky <mkrufky@linuxtv.org>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
e26f2ae4
MK		 16 */
17
18#include <linux/jiffies.h>
19#include <linux/dvb/frontend.h>
20#include "lg2160.h"
21
22static int debug;
23module_param(debug, int, 0644);
24MODULE_PARM_DESC(debug, "set debug level (info=1, reg=2 (or-able))");
25
26#define DBG_INFO 1
27#define DBG_REG 2
28
29#define lg_printk(kern, fmt, arg...) \
30 printk(kern "%s: " fmt, __func__, ##arg)
31
32#define lg_info(fmt, arg...) printk(KERN_INFO "lg2160: " fmt, ##arg)
33#define lg_warn(fmt, arg...) lg_printk(KERN_WARNING, fmt, ##arg)
34#define lg_err(fmt, arg...) lg_printk(KERN_ERR, fmt, ##arg)
35#define lg_dbg(fmt, arg...) if (debug & DBG_INFO) \
36 lg_printk(KERN_DEBUG, fmt, ##arg)
37#define lg_reg(fmt, arg...) if (debug & DBG_REG) \
38 lg_printk(KERN_DEBUG, fmt, ##arg)
39
40#define lg_fail(ret) \
41({ \
42 int __ret; \
43 __ret = (ret < 0); \
44 if (__ret) \
45 lg_err("error %d on line %d\n", ret, __LINE__); \
46 __ret; \
47})
48
49struct lg216x_state {
50 struct i2c_adapter *i2c_adap;
51 const struct lg2160_config *cfg;
52
53 struct dvb_frontend frontend;
54
55 u32 current_frequency;
56 u8 parade_id;
57 u8 fic_ver;
58 unsigned int last_reset;
59};
60
61/* ------------------------------------------------------------------------ */
62
63static int lg216x_write_reg(struct lg216x_state *state, u16 reg, u8 val)
64{
65 int ret;
66 u8 buf[] = { reg >> 8, reg & 0xff, val };
67 struct i2c_msg msg = {
68 .addr = state->cfg->i2c_addr, .flags = 0,
69 .buf = buf, .len = 3,
70 };
71
72 lg_reg("reg: 0x%04x, val: 0x%02x\n", reg, val);
73
74 ret = i2c_transfer(state->i2c_adap, &msg, 1);
75
76 if (ret != 1) {
77 lg_err("error (addr %02x %02x <- %02x, err = %i)\n",
78 msg.buf[0], msg.buf[1], msg.buf[2], ret);
79 if (ret < 0)
80 return ret;
81 else
82 return -EREMOTEIO;
83 }
84 return 0;
85}
86
87static int lg216x_read_reg(struct lg216x_state *state, u16 reg, u8 *val)
88{
89 int ret;
90 u8 reg_buf[] = { reg >> 8, reg & 0xff };
91 struct i2c_msg msg[] = {
92 { .addr = state->cfg->i2c_addr,
93 .flags = 0, .buf = reg_buf, .len = 2 },
94 { .addr = state->cfg->i2c_addr,
95 .flags = I2C_M_RD, .buf = val, .len = 1 },
96 };
97
98 lg_reg("reg: 0x%04x\n", reg);
99
100 ret = i2c_transfer(state->i2c_adap, msg, 2);
101
102 if (ret != 2) {
103 lg_err("error (addr %02x reg %04x error (ret == %i)\n",
104 state->cfg->i2c_addr, reg, ret);
105 if (ret < 0)
106 return ret;
107 else
108 return -EREMOTEIO;
109 }
110 return 0;
111}
112
113struct lg216x_reg {
114 u16 reg;
115 u8 val;
116};
117
118static int lg216x_write_regs(struct lg216x_state *state,
119 struct lg216x_reg *regs, int len)
120{
121 int i, ret;
122
123 lg_reg("writing %d registers...\n", len);
124
bffaecc7 125 for (i = 0; i < len; i++) {
e26f2ae4
MK		 126 ret = lg216x_write_reg(state, regs[i].reg, regs[i].val);
127 if (lg_fail(ret))
128 return ret;
129 }
130 return 0;
131}
132
133static int lg216x_set_reg_bit(struct lg216x_state *state,
134 u16 reg, int bit, int onoff)
135{
136 u8 val;
137 int ret;
138
139 lg_reg("reg: 0x%04x, bit: %d, level: %d\n", reg, bit, onoff);
140
141 ret = lg216x_read_reg(state, reg, &val);
142 if (lg_fail(ret))
143 goto fail;
144
145 val &= ~(1 << bit);
146 val |= (onoff & 1) << bit;
147
148 ret = lg216x_write_reg(state, reg, val);
149 lg_fail(ret);
150fail:
151 return ret;
152}
153
154/* ------------------------------------------------------------------------ */
155
156static int lg216x_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
157{
158 struct lg216x_state *state = fe->demodulator_priv;
159 int ret;
160
161 if (state->cfg->deny_i2c_rptr)
162 return 0;
163
164 lg_dbg("(%d)\n", enable);
165
166 ret = lg216x_set_reg_bit(state, 0x0000, 0, enable ? 0 : 1);
167
168 msleep(1);
169
170 return ret;
171}
172
173static int lg216x_soft_reset(struct lg216x_state *state)
174{
175 int ret;
176
177 lg_dbg("\n");
178
179 ret = lg216x_write_reg(state, 0x0002, 0x00);
180 if (lg_fail(ret))
181 goto fail;
182
183 msleep(20);
184 ret = lg216x_write_reg(state, 0x0002, 0x01);
185 if (lg_fail(ret))
186 goto fail;
187
188 state->last_reset = jiffies_to_msecs(jiffies);
189fail:
190 return ret;
191}
192
193static int lg216x_initialize(struct lg216x_state *state)
194{
195 int ret;
196
197 static struct lg216x_reg lg2160_init[] = {
198#if 0
199 { .reg = 0x0015, .val = 0xe6 },
200#else
201 { .reg = 0x0015, .val = 0xf7 },
202 { .reg = 0x001b, .val = 0x52 },
203 { .reg = 0x0208, .val = 0x00 },
204 { .reg = 0x0209, .val = 0x82 },
205 { .reg = 0x0210, .val = 0xf9 },
206 { .reg = 0x020a, .val = 0x00 },
207 { .reg = 0x020b, .val = 0x82 },
208 { .reg = 0x020d, .val = 0x28 },
209 { .reg = 0x020f, .val = 0x14 },
210#endif
211 };
212
213 static struct lg216x_reg lg2161_init[] = {
214 { .reg = 0x0000, .val = 0x41 },
215 { .reg = 0x0001, .val = 0xfb },
216 { .reg = 0x0216, .val = 0x00 },
217 { .reg = 0x0219, .val = 0x00 },
218 { .reg = 0x021b, .val = 0x55 },
219 { .reg = 0x0606, .val = 0x0a },
220 };
221
222 switch (state->cfg->lg_chip) {
223 case LG2160:
224 ret = lg216x_write_regs(state,
225 lg2160_init, ARRAY_SIZE(lg2160_init));
226 break;
227 case LG2161:
228 ret = lg216x_write_regs(state,
229 lg2161_init, ARRAY_SIZE(lg2161_init));
230 break;
231 default:
232 ret = -EINVAL;
233 break;
234 }
235 if (lg_fail(ret))
236 goto fail;
237
238 ret = lg216x_soft_reset(state);
239 lg_fail(ret);
240fail:
241 return ret;
242}
243
244/* ------------------------------------------------------------------------ */
245
246static int lg216x_set_if(struct lg216x_state *state)
247{
248 u8 val;
249 int ret;
250
251 lg_dbg("%d KHz\n", state->cfg->if_khz);
252
253 ret = lg216x_read_reg(state, 0x0132, &val);
254 if (lg_fail(ret))
255 goto fail;
256
257 val &= 0xfb;
258 val |= (0 == state->cfg->if_khz) ? 0x04 : 0x00;
259
260 ret = lg216x_write_reg(state, 0x0132, val);
261 lg_fail(ret);
262
263 /* if NOT zero IF, 6 MHz is the default */
264fail:
265 return ret;
266}
267
268/* ------------------------------------------------------------------------ */
269
270static int lg2160_agc_fix(struct lg216x_state *state,
271 int if_agc_fix, int rf_agc_fix)
272{
273 u8 val;
274 int ret;
275
276 ret = lg216x_read_reg(state, 0x0100, &val);
277 if (lg_fail(ret))
278 goto fail;
279
280 val &= 0xf3;
281 val |= (if_agc_fix) ? 0x08 : 0x00;
282 val |= (rf_agc_fix) ? 0x04 : 0x00;
283
284 ret = lg216x_write_reg(state, 0x0100, val);
285 lg_fail(ret);
286fail:
287 return ret;
288}
289
290#if 0
291static int lg2160_agc_freeze(struct lg216x_state *state,
292 int if_agc_freeze, int rf_agc_freeze)
293{
294 u8 val;
295 int ret;
296
297 ret = lg216x_read_reg(state, 0x0100, &val);
298 if (lg_fail(ret))
299 goto fail;
300
301 val &= 0xcf;
302 val |= (if_agc_freeze) ? 0x20 : 0x00;
303 val |= (rf_agc_freeze) ? 0x10 : 0x00;
304
305 ret = lg216x_write_reg(state, 0x0100, val);
306 lg_fail(ret);
307fail:
308 return ret;
309}
310#endif
311
312static int lg2160_agc_polarity(struct lg216x_state *state,
313 int if_agc_polarity, int rf_agc_polarity)
314{
315 u8 val;
316 int ret;
317
318 ret = lg216x_read_reg(state, 0x0100, &val);
319 if (lg_fail(ret))
320 goto fail;
321
322 val &= 0xfc;
323 val |= (if_agc_polarity) ? 0x02 : 0x00;
324 val |= (rf_agc_polarity) ? 0x01 : 0x00;
325
326 ret = lg216x_write_reg(state, 0x0100, val);
327 lg_fail(ret);
328fail:
329 return ret;
330}
331
332static int lg2160_tuner_pwr_save_polarity(struct lg216x_state *state,
333 int polarity)
334{
335 u8 val;
336 int ret;
337
338 ret = lg216x_read_reg(state, 0x0008, &val);
339 if (lg_fail(ret))
340 goto fail;
341
342 val &= 0xfe;
343 val |= (polarity) ? 0x01 : 0x00;
344
345 ret = lg216x_write_reg(state, 0x0008, val);
346 lg_fail(ret);
347fail:
348 return ret;
349}
350
351static int lg2160_spectrum_polarity(struct lg216x_state *state,
352 int inverted)
353{
354 u8 val;
355 int ret;
356
357 ret = lg216x_read_reg(state, 0x0132, &val);
358 if (lg_fail(ret))
359 goto fail;
360
361 val &= 0xfd;
362 val |= (inverted) ? 0x02 : 0x00;
363
364 ret = lg216x_write_reg(state, 0x0132, val);
365 lg_fail(ret);
366fail:
367 return lg216x_soft_reset(state);
368}
369
370static int lg2160_tuner_pwr_save(struct lg216x_state *state, int onoff)
371{
372 u8 val;
373 int ret;
374
375 ret = lg216x_read_reg(state, 0x0007, &val);
376 if (lg_fail(ret))
377 goto fail;
378
379 val &= 0xbf;
380 val |= (onoff) ? 0x40 : 0x00;
381
382 ret = lg216x_write_reg(state, 0x0007, val);
383 lg_fail(ret);
384fail:
385 return ret;
386}
387
388static int lg216x_set_parade(struct lg216x_state *state, int id)
389{
390 int ret;
391
392 ret = lg216x_write_reg(state, 0x013e, id & 0x7f);
393 if (lg_fail(ret))
394 goto fail;
395
396 state->parade_id = id & 0x7f;
397fail:
398 return ret;
399}
400
401static int lg216x_set_ensemble(struct lg216x_state *state, int id)
402{
403 int ret;
404 u16 reg;
405 u8 val;
406
407 switch (state->cfg->lg_chip) {
408 case LG2160:
409 reg = 0x0400;
410 break;
411 case LG2161:
5444a1b7 412 default:
e26f2ae4
MK		 413 reg = 0x0500;
414 break;
415 }
416
417 ret = lg216x_read_reg(state, reg, &val);
418 if (lg_fail(ret))
419 goto fail;
420
421 val &= 0xfe;
422 val |= (id) ? 0x01 : 0x00;
423
424 ret = lg216x_write_reg(state, reg, val);
425 lg_fail(ret);
426fail:
427 return ret;
428}
429
430static int lg2160_set_spi_clock(struct lg216x_state *state)
431{
432 u8 val;
433 int ret;
434
435 ret = lg216x_read_reg(state, 0x0014, &val);
436 if (lg_fail(ret))
437 goto fail;
438
439 val &= 0xf3;
440 val |= (state->cfg->spi_clock << 2);
441
442 ret = lg216x_write_reg(state, 0x0014, val);
443 lg_fail(ret);
444fail:
445 return ret;
446}
447
448static int lg2161_set_output_interface(struct lg216x_state *state)
449{
450 u8 val;
451 int ret;
452
453 ret = lg216x_read_reg(state, 0x0014, &val);
454 if (lg_fail(ret))
455 goto fail;
456
457 val &= ~0x07;
458 val |= state->cfg->output_if; /* FIXME: needs sanity check */
459
460 ret = lg216x_write_reg(state, 0x0014, val);
461 lg_fail(ret);
462fail:
463 return ret;
464}
465
466static int lg216x_enable_fic(struct lg216x_state *state, int onoff)
467{
468 int ret;
469
470 ret = lg216x_write_reg(state, 0x0017, 0x23);
471 if (lg_fail(ret))
472 goto fail;
473
474 ret = lg216x_write_reg(state, 0x0016, 0xfc);
475 if (lg_fail(ret))
476 goto fail;
477
478 switch (state->cfg->lg_chip) {
479 case LG2160:
480 ret = lg216x_write_reg(state, 0x0016,
481 0xfc | ((onoff) ? 0x02 : 0x00));
482 break;
483 case LG2161:
484 ret = lg216x_write_reg(state, 0x0016, (onoff) ? 0x10 : 0x00);
485 break;
486 }
487 if (lg_fail(ret))
488 goto fail;
489
490 ret = lg216x_initialize(state);
491 if (lg_fail(ret))
492 goto fail;
493
494 if (onoff) {
495 ret = lg216x_write_reg(state, 0x0017, 0x03);
496 lg_fail(ret);
497 }
498fail:
499 return ret;
500}
501
502/* ------------------------------------------------------------------------ */
503
504static int lg216x_get_fic_version(struct lg216x_state *state, u8 *ficver)
505{
506 u8 val;
507 int ret;
508
509 *ficver = 0xff; /* invalid value */
510
511 ret = lg216x_read_reg(state, 0x0128, &val);
512 if (lg_fail(ret))
513 goto fail;
514
515 *ficver = (val >> 3) & 0x1f;
516fail:
517 return ret;
518}
519
520#if 0
521static int lg2160_get_parade_id(struct lg216x_state *state, u8 *id)
522{
523 u8 val;
524 int ret;
525
526 *id = 0xff; /* invalid value */
527
528 ret = lg216x_read_reg(state, 0x0123, &val);
529 if (lg_fail(ret))
530 goto fail;
531
532 *id = val & 0x7f;
533fail:
534 return ret;
535}
536#endif
537
538static int lg216x_get_nog(struct lg216x_state *state, u8 *nog)
539{
540 u8 val;
541 int ret;
542
543 *nog = 0xff; /* invalid value */
544
545 ret = lg216x_read_reg(state, 0x0124, &val);
546 if (lg_fail(ret))
547 goto fail;
548
549 *nog = ((val >> 4) & 0x07) + 1;
550fail:
551 return ret;
552}
553
554static int lg216x_get_tnog(struct lg216x_state *state, u8 *tnog)
555{
556 u8 val;
557 int ret;
558
559 *tnog = 0xff; /* invalid value */
560
561 ret = lg216x_read_reg(state, 0x0125, &val);
562 if (lg_fail(ret))
563 goto fail;
564
565 *tnog = val & 0x1f;
566fail:
567 return ret;
568}
569
570static int lg216x_get_sgn(struct lg216x_state *state, u8 *sgn)
571{
572 u8 val;
573 int ret;
574
575 *sgn = 0xff; /* invalid value */
576
577 ret = lg216x_read_reg(state, 0x0124, &val);
578 if (lg_fail(ret))
579 goto fail;
580
581 *sgn = val & 0x0f;
582fail:
583 return ret;
584}
585
586static int lg216x_get_prc(struct lg216x_state *state, u8 *prc)
587{
588 u8 val;
589 int ret;
590
591 *prc = 0xff; /* invalid value */
592
593 ret = lg216x_read_reg(state, 0x0125, &val);
594 if (lg_fail(ret))
595 goto fail;
596
597 *prc = ((val >> 5) & 0x07) + 1;
598fail:
599 return ret;
600}
601
602/* ------------------------------------------------------------------------ */
603
604static int lg216x_get_rs_frame_mode(struct lg216x_state *state,
605 enum atscmh_rs_frame_mode *rs_framemode)
606{
607 u8 val;
608 int ret;
609
610 switch (state->cfg->lg_chip) {
611 case LG2160:
612 ret = lg216x_read_reg(state, 0x0410, &val);
613 break;
614 case LG2161:
615 ret = lg216x_read_reg(state, 0x0513, &val);
616 break;
617 default:
618 ret = -EINVAL;
619 }
620 if (lg_fail(ret))
621 goto fail;
622
623 switch ((val >> 4) & 0x03) {
624#if 1
625 default:
626#endif
627 case 0x00:
628 *rs_framemode = ATSCMH_RSFRAME_PRI_ONLY;
629 break;
630 case 0x01:
631 *rs_framemode = ATSCMH_RSFRAME_PRI_SEC;
632 break;
633#if 0
634 default:
635 *rs_framemode = ATSCMH_RSFRAME_RES;
636 break;
637#endif
638 }
639fail:
640 return ret;
641}
642
643static
644int lg216x_get_rs_frame_ensemble(struct lg216x_state *state,
645 enum atscmh_rs_frame_ensemble *rs_frame_ens)
646{
647 u8 val;
648 int ret;
649
650 switch (state->cfg->lg_chip) {
651 case LG2160:
652 ret = lg216x_read_reg(state, 0x0400, &val);
653 break;
654 case LG2161:
655 ret = lg216x_read_reg(state, 0x0500, &val);
656 break;
657 default:
658 ret = -EINVAL;
659 }
660 if (lg_fail(ret))
661 goto fail;
662
663 val &= 0x01;
664 *rs_frame_ens = (enum atscmh_rs_frame_ensemble) val;
665fail:
666 return ret;
667}
668
669static int lg216x_get_rs_code_mode(struct lg216x_state *state,
670 enum atscmh_rs_code_mode *rs_code_pri,
671 enum atscmh_rs_code_mode *rs_code_sec)
672{
673 u8 val;
674 int ret;
675
676 switch (state->cfg->lg_chip) {
677 case LG2160:
678 ret = lg216x_read_reg(state, 0x0410, &val);
679 break;
680 case LG2161:
681 ret = lg216x_read_reg(state, 0x0513, &val);
682 break;
683 default:
684 ret = -EINVAL;
685 }
686 if (lg_fail(ret))
687 goto fail;
688
689 *rs_code_pri = (enum atscmh_rs_code_mode) ((val >> 2) & 0x03);
690 *rs_code_sec = (enum atscmh_rs_code_mode) (val & 0x03);
691fail:
692 return ret;
693}
694
695static int lg216x_get_sccc_block_mode(struct lg216x_state *state,
696 enum atscmh_sccc_block_mode *sccc_block)
697{
698 u8 val;
699 int ret;
700
701 switch (state->cfg->lg_chip) {
702 case LG2160:
703 ret = lg216x_read_reg(state, 0x0315, &val);
704 break;
705 case LG2161:
706 ret = lg216x_read_reg(state, 0x0511, &val);
707 break;
708 default:
709 ret = -EINVAL;
710 }
711 if (lg_fail(ret))
712 goto fail;
713
714 switch (val & 0x03) {
715 case 0x00:
716 *sccc_block = ATSCMH_SCCC_BLK_SEP;
717 break;
718 case 0x01:
719 *sccc_block = ATSCMH_SCCC_BLK_COMB;
720 break;
721 default:
722 *sccc_block = ATSCMH_SCCC_BLK_RES;
723 break;
724 }
725fail:
726 return ret;
727}
728
729static int lg216x_get_sccc_code_mode(struct lg216x_state *state,
730 enum atscmh_sccc_code_mode *mode_a,
731 enum atscmh_sccc_code_mode *mode_b,
732 enum atscmh_sccc_code_mode *mode_c,
733 enum atscmh_sccc_code_mode *mode_d)
734{
735 u8 val;
736 int ret;
737
738 switch (state->cfg->lg_chip) {
739 case LG2160:
740 ret = lg216x_read_reg(state, 0x0316, &val);
741 break;
742 case LG2161:
743 ret = lg216x_read_reg(state, 0x0512, &val);
744 break;
745 default:
746 ret = -EINVAL;
747 }
748 if (lg_fail(ret))
749 goto fail;
750
751 switch ((val >> 6) & 0x03) {
752 case 0x00:
753 *mode_a = ATSCMH_SCCC_CODE_HLF;
754 break;
755 case 0x01:
756 *mode_a = ATSCMH_SCCC_CODE_QTR;
757 break;
758 default:
759 *mode_a = ATSCMH_SCCC_CODE_RES;
760 break;
761 }
762
763 switch ((val >> 4) & 0x03) {
764 case 0x00:
765 *mode_b = ATSCMH_SCCC_CODE_HLF;
766 break;
767 case 0x01:
768 *mode_b = ATSCMH_SCCC_CODE_QTR;
769 break;
770 default:
771 *mode_b = ATSCMH_SCCC_CODE_RES;
772 break;
773 }
774
775 switch ((val >> 2) & 0x03) {
776 case 0x00:
777 *mode_c = ATSCMH_SCCC_CODE_HLF;
778 break;
779 case 0x01:
780 *mode_c = ATSCMH_SCCC_CODE_QTR;
781 break;
782 default:
783 *mode_c = ATSCMH_SCCC_CODE_RES;
784 break;
785 }
786
787 switch (val & 0x03) {
788 case 0x00:
789 *mode_d = ATSCMH_SCCC_CODE_HLF;
790 break;
791 case 0x01:
792 *mode_d = ATSCMH_SCCC_CODE_QTR;
793 break;
794 default:
795 *mode_d = ATSCMH_SCCC_CODE_RES;
796 break;
797 }
798fail:
799 return ret;
800}
801
802/* ------------------------------------------------------------------------ */
803
10d67371 804#if 0
e26f2ae4
MK		 805static int lg216x_read_fic_err_count(struct lg216x_state *state, u8 *err)
806{
807 u8 fic_err;
808 int ret;
809
810 *err = 0;
811
812 switch (state->cfg->lg_chip) {
813 case LG2160:
814 ret = lg216x_read_reg(state, 0x0012, &fic_err);
815 break;
816 case LG2161:
817 ret = lg216x_read_reg(state, 0x001e, &fic_err);
818 break;
819 }
820 if (lg_fail(ret))
821 goto fail;
822
823 *err = fic_err;
824fail:
825 return ret;
826}
827
828static int lg2160_read_crc_err_count(struct lg216x_state *state, u16 *err)
829{
830 u8 crc_err1, crc_err2;
831 int ret;
832
833 *err = 0;
834
835 ret = lg216x_read_reg(state, 0x0411, &crc_err1);
836 if (lg_fail(ret))
837 goto fail;
838
839 ret = lg216x_read_reg(state, 0x0412, &crc_err2);
840 if (lg_fail(ret))
841 goto fail;
842
843 *err = (u16)(((crc_err2 & 0x0f) << 8) | crc_err1);
844fail:
845 return ret;
846}
847
848static int lg2161_read_crc_err_count(struct lg216x_state *state, u16 *err)
849{
850 u8 crc_err;
851 int ret;
852
853 *err = 0;
854
855 ret = lg216x_read_reg(state, 0x0612, &crc_err);
856 if (lg_fail(ret))
857 goto fail;
858
859 *err = (u16)crc_err;
860fail:
861 return ret;
862}
863
864static int lg216x_read_crc_err_count(struct lg216x_state *state, u16 *err)
865{
866 int ret;
867 switch (state->cfg->lg_chip) {
868 case LG2160:
869 ret = lg2160_read_crc_err_count(state, err);
870 break;
871 case LG2161:
872 ret = lg2161_read_crc_err_count(state, err);
873 break;
874 default:
875 ret = -EINVAL;
876 break;
877 }
878 return ret;
879}
880
881static int lg2160_read_rs_err_count(struct lg216x_state *state, u16 *err)
882{
883 u8 rs_err1, rs_err2;
884 int ret;
885
886 *err = 0;
887
888 ret = lg216x_read_reg(state, 0x0413, &rs_err1);
889 if (lg_fail(ret))
890 goto fail;
891
892 ret = lg216x_read_reg(state, 0x0414, &rs_err2);
893 if (lg_fail(ret))
894 goto fail;
895
896 *err = (u16)(((rs_err2 & 0x0f) << 8) | rs_err1);
897fail:
898 return ret;
899}
900
901static int lg2161_read_rs_err_count(struct lg216x_state *state, u16 *err)
902{
903 u8 rs_err1, rs_err2;
904 int ret;
905
906 *err = 0;
907
908 ret = lg216x_read_reg(state, 0x0613, &rs_err1);
909 if (lg_fail(ret))
910 goto fail;
911
912 ret = lg216x_read_reg(state, 0x0614, &rs_err2);
913 if (lg_fail(ret))
914 goto fail;
915
916 *err = (u16)((rs_err1 << 8) | rs_err2);
917fail:
918 return ret;
919}
920
921static int lg216x_read_rs_err_count(struct lg216x_state *state, u16 *err)
922{
923 int ret;
924 switch (state->cfg->lg_chip) {
925 case LG2160:
926 ret = lg2160_read_rs_err_count(state, err);
927 break;
928 case LG2161:
929 ret = lg2161_read_rs_err_count(state, err);
930 break;
931 default:
932 ret = -EINVAL;
933 break;
934 }
935 return ret;
936}
10d67371 937#endif
e26f2ae4
MK		 938
939/* ------------------------------------------------------------------------ */
940
7e3e68bc
MCC		 941static int lg216x_get_frontend(struct dvb_frontend *fe,
942 struct dtv_frontend_properties *c)
e26f2ae4
MK		 943{
944 struct lg216x_state *state = fe->demodulator_priv;
945 int ret;
946
947 lg_dbg("\n");
948
7e3e68bc
MCC		 949 c->modulation = VSB_8;
950 c->frequency = state->current_frequency;
951 c->delivery_system = SYS_ATSCMH;
e26f2ae4
MK		 952
953 ret = lg216x_get_fic_version(state,
7e3e68bc 954 &c->atscmh_fic_ver);
e26f2ae4
MK		 955 if (lg_fail(ret))
956 goto fail;
7e3e68bc
MCC		 957 if (state->fic_ver != c->atscmh_fic_ver) {
958 state->fic_ver = c->atscmh_fic_ver;
e26f2ae4
MK		 959
960#if 0
961 ret = lg2160_get_parade_id(state,
7e3e68bc 962 &c->atscmh_parade_id);
e26f2ae4
MK		 963 if (lg_fail(ret))
964 goto fail;
965/* #else */
7e3e68bc 966 c->atscmh_parade_id = state->parade_id;
e26f2ae4
MK		 967#endif
968 ret = lg216x_get_nog(state,
7e3e68bc 969 &c->atscmh_nog);
e26f2ae4
MK		 970 if (lg_fail(ret))
971 goto fail;
972 ret = lg216x_get_tnog(state,
7e3e68bc 973 &c->atscmh_tnog);
e26f2ae4
MK		 974 if (lg_fail(ret))
975 goto fail;
976 ret = lg216x_get_sgn(state,
7e3e68bc 977 &c->atscmh_sgn);
e26f2ae4
MK		 978 if (lg_fail(ret))
979 goto fail;
980 ret = lg216x_get_prc(state,
7e3e68bc 981 &c->atscmh_prc);
e26f2ae4
MK		 982 if (lg_fail(ret))
983 goto fail;
984
985 ret = lg216x_get_rs_frame_mode(state,
986 (enum atscmh_rs_frame_mode *)
7e3e68bc 987 &c->atscmh_rs_frame_mode);
e26f2ae4
MK		 988 if (lg_fail(ret))
989 goto fail;
990 ret = lg216x_get_rs_frame_ensemble(state,
991 (enum atscmh_rs_frame_ensemble *)
7e3e68bc 992 &c->atscmh_rs_frame_ensemble);
e26f2ae4
MK		 993 if (lg_fail(ret))
994 goto fail;
995 ret = lg216x_get_rs_code_mode(state,
996 (enum atscmh_rs_code_mode *)
7e3e68bc 997 &c->atscmh_rs_code_mode_pri,
e26f2ae4 998 (enum atscmh_rs_code_mode *)
7e3e68bc 999 &c->atscmh_rs_code_mode_sec);
e26f2ae4
MK		 1000 if (lg_fail(ret))
1001 goto fail;
1002 ret = lg216x_get_sccc_block_mode(state,
1003 (enum atscmh_sccc_block_mode *)
7e3e68bc 1004 &c->atscmh_sccc_block_mode);
e26f2ae4
MK		 1005 if (lg_fail(ret))
1006 goto fail;
1007 ret = lg216x_get_sccc_code_mode(state,
1008 (enum atscmh_sccc_code_mode *)
7e3e68bc 1009 &c->atscmh_sccc_code_mode_a,
e26f2ae4 1010 (enum atscmh_sccc_code_mode *)
7e3e68bc 1011 &c->atscmh_sccc_code_mode_b,
e26f2ae4 1012 (enum atscmh_sccc_code_mode *)
7e3e68bc 1013 &c->atscmh_sccc_code_mode_c,
e26f2ae4 1014 (enum atscmh_sccc_code_mode *)
7e3e68bc 1015 &c->atscmh_sccc_code_mode_d);
e26f2ae4
MK		 1016 if (lg_fail(ret))
1017 goto fail;
1018 }
10d67371 1019#if 0
e26f2ae4 1020 ret = lg216x_read_fic_err_count(state,
7e3e68bc 1021 (u8 *)&c->atscmh_fic_err);
e26f2ae4
MK		 1022 if (lg_fail(ret))
1023 goto fail;
1024 ret = lg216x_read_crc_err_count(state,
7e3e68bc 1025 &c->atscmh_crc_err);
e26f2ae4
MK		 1026 if (lg_fail(ret))
1027 goto fail;
1028 ret = lg216x_read_rs_err_count(state,
7e3e68bc 1029 &c->atscmh_rs_err);
e26f2ae4
MK		 1030 if (lg_fail(ret))
1031 goto fail;
1032
1033 switch (state->cfg->lg_chip) {
1034 case LG2160:
7e3e68bc
MCC		 1035 if (((c->atscmh_rs_err >= 240) &&
1036 (c->atscmh_crc_err >= 240)) &&
e26f2ae4
MK		 1037 ((jiffies_to_msecs(jiffies) - state->last_reset) > 6000))
1038 ret = lg216x_soft_reset(state);
1039 break;
1040 case LG2161:
1041 /* no fix needed here (as far as we know) */
1042 ret = 0;
1043 break;
1044 }
1045 lg_fail(ret);
10d67371 1046#endif
e26f2ae4
MK		 1047fail:
1048 return ret;
1049}
1050
1051static int lg216x_get_property(struct dvb_frontend *fe,
1052 struct dtv_property *tvp)
1053{
7e3e68bc
MCC		 1054 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1055
e26f2ae4 1056 return (DTV_ATSCMH_FIC_VER == tvp->cmd) ?
7e3e68bc 1057 lg216x_get_frontend(fe, c) : 0;
e26f2ae4
MK		 1058}
1059
1060
1061static int lg2160_set_frontend(struct dvb_frontend *fe)
1062{
1063 struct lg216x_state *state = fe->demodulator_priv;
7e3e68bc 1064 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
e26f2ae4
MK		 1065 int ret;
1066
1067 lg_dbg("(%d)\n", fe->dtv_property_cache.frequency);
1068
1069 if (fe->ops.tuner_ops.set_params) {
1070 ret = fe->ops.tuner_ops.set_params(fe);
1071 if (fe->ops.i2c_gate_ctrl)
1072 fe->ops.i2c_gate_ctrl(fe, 0);
1073 if (lg_fail(ret))
1074 goto fail;
1075 state->current_frequency = fe->dtv_property_cache.frequency;
1076 }
1077
1078 ret = lg2160_agc_fix(state, 0, 0);
1079 if (lg_fail(ret))
1080 goto fail;
1081 ret = lg2160_agc_polarity(state, 0, 0);
1082 if (lg_fail(ret))
1083 goto fail;
1084 ret = lg2160_tuner_pwr_save_polarity(state, 1);
1085 if (lg_fail(ret))
1086 goto fail;
1087 ret = lg216x_set_if(state);
1088 if (lg_fail(ret))
1089 goto fail;
1090 ret = lg2160_spectrum_polarity(state, state->cfg->spectral_inversion);
1091 if (lg_fail(ret))
1092 goto fail;
1093
1094 /* be tuned before this point */
1095 ret = lg216x_soft_reset(state);
1096 if (lg_fail(ret))
1097 goto fail;
1098
1099 ret = lg2160_tuner_pwr_save(state, 0);
1100 if (lg_fail(ret))
1101 goto fail;
1102
1103 switch (state->cfg->lg_chip) {
1104 case LG2160:
1105 ret = lg2160_set_spi_clock(state);
1106 if (lg_fail(ret))
1107 goto fail;
1108 break;
1109 case LG2161:
1110 ret = lg2161_set_output_interface(state);
1111 if (lg_fail(ret))
1112 goto fail;
1113 break;
1114 }
1115
1116 ret = lg216x_set_parade(state, fe->dtv_property_cache.atscmh_parade_id);
1117 if (lg_fail(ret))
1118 goto fail;
1119
1120 ret = lg216x_set_ensemble(state,
1121 fe->dtv_property_cache.atscmh_rs_frame_ensemble);
1122 if (lg_fail(ret))
1123 goto fail;
1124
1125 ret = lg216x_initialize(state);
1126 if (lg_fail(ret))
1127 goto fail;
1128
1129 ret = lg216x_enable_fic(state, 1);
1130 lg_fail(ret);
1131
7e3e68bc 1132 lg216x_get_frontend(fe, c);
e26f2ae4
MK		 1133fail:
1134 return ret;
1135}
1136
1137/* ------------------------------------------------------------------------ */
1138
1139static int lg2160_read_lock_status(struct lg216x_state *state,
1140 int *acq_lock, int *sync_lock)
1141{
1142 u8 val;
1143 int ret;
1144
1145 *acq_lock = 0;
1146 *sync_lock = 0;
1147
1148 ret = lg216x_read_reg(state, 0x011b, &val);
1149 if (lg_fail(ret))
1150 goto fail;
1151
1152 *sync_lock = (val & 0x20) ? 0 : 1;
1153 *acq_lock = (val & 0x40) ? 0 : 1;
1154fail:
1155 return ret;
1156}
1157
1158#ifdef USE_LG2161_LOCK_BITS
1159static int lg2161_read_lock_status(struct lg216x_state *state,
1160 int *acq_lock, int *sync_lock)
1161{
1162 u8 val;
1163 int ret;
1164
1165 *acq_lock = 0;
1166 *sync_lock = 0;
1167
1168 ret = lg216x_read_reg(state, 0x0304, &val);
1169 if (lg_fail(ret))
1170 goto fail;
1171
1172 *sync_lock = (val & 0x80) ? 0 : 1;
1173
1174 ret = lg216x_read_reg(state, 0x011b, &val);
1175 if (lg_fail(ret))
1176 goto fail;
1177
1178 *acq_lock = (val & 0x40) ? 0 : 1;
1179fail:
1180 return ret;
1181}
1182#endif
1183
1184static int lg216x_read_lock_status(struct lg216x_state *state,
1185 int *acq_lock, int *sync_lock)
1186{
1187#ifdef USE_LG2161_LOCK_BITS
1188 int ret;
1189 switch (state->cfg->lg_chip) {
1190 case LG2160:
1191 ret = lg2160_read_lock_status(state, acq_lock, sync_lock);
1192 break;
1193 case LG2161:
1194 ret = lg2161_read_lock_status(state, acq_lock, sync_lock);
1195 break;
1196 default:
1197 ret = -EINVAL;
1198 break;
1199 }
1200 return ret;
1201#else
1202 return lg2160_read_lock_status(state, acq_lock, sync_lock);
1203#endif
1204}
1205
0df289a2 1206static int lg216x_read_status(struct dvb_frontend *fe, enum fe_status *status)
e26f2ae4
MK		 1207{
1208 struct lg216x_state *state = fe->demodulator_priv;
1209 int ret, acq_lock, sync_lock;
1210
1211 *status = 0;
1212
1213 ret = lg216x_read_lock_status(state, &acq_lock, &sync_lock);
1214 if (lg_fail(ret))
1215 goto fail;
1216
1217 lg_dbg("%s%s\n",
1218 acq_lock ? "SIGNALEXIST " : "",
1219 sync_lock ? "SYNCLOCK" : "");
1220
1221 if (acq_lock)
1222 *status |= FE_HAS_SIGNAL;
1223 if (sync_lock)
1224 *status |= FE_HAS_SYNC;
1225
1226 if (*status)
1227 *status |= FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_LOCK;
1228
1229fail:
1230 return ret;
1231}
1232
1233/* ------------------------------------------------------------------------ */
1234
1235static int lg2160_read_snr(struct dvb_frontend *fe, u16 *snr)
1236{
1237 struct lg216x_state *state = fe->demodulator_priv;
1238 u8 snr1, snr2;
1239 int ret;
1240
1241 *snr = 0;
1242
1243 ret = lg216x_read_reg(state, 0x0202, &snr1);
1244 if (lg_fail(ret))
1245 goto fail;
1246
1247 ret = lg216x_read_reg(state, 0x0203, &snr2);
1248 if (lg_fail(ret))
1249 goto fail;
1250
1251 if ((snr1 == 0xba) || (snr2 == 0xdf))
1252 *snr = 0;
1253 else
1254#if 1
1255 *snr = ((snr1 >> 4) * 100) + ((snr1 & 0x0f) * 10) + (snr2 >> 4);
1256#else /* BCD */
1257 *snr = (snr2 | (snr1 << 8));
1258#endif
1259fail:
1260 return ret;
1261}
1262
1263static int lg2161_read_snr(struct dvb_frontend *fe, u16 *snr)
1264{
1265 struct lg216x_state *state = fe->demodulator_priv;
1266 u8 snr1, snr2;
1267 int ret;
1268
1269 *snr = 0;
1270
1271 ret = lg216x_read_reg(state, 0x0302, &snr1);
1272 if (lg_fail(ret))
1273 goto fail;
1274
1275 ret = lg216x_read_reg(state, 0x0303, &snr2);
1276 if (lg_fail(ret))
1277 goto fail;
1278
1279 if ((snr1 == 0xba) || (snr2 == 0xfd))
1280 *snr = 0;
1281 else
1282
1283 *snr = ((snr1 >> 4) * 100) + ((snr1 & 0x0f) * 10) + (snr2 & 0x0f);
1284fail:
1285 return ret;
1286}
1287
1288static int lg216x_read_signal_strength(struct dvb_frontend *fe,
1289 u16 *strength)
1290{
1291#if 0
1292 /* borrowed from lgdt330x.c
1293 *
1294 * Calculate strength from SNR up to 35dB
1295 * Even though the SNR can go higher than 35dB,
1296 * there is some comfort factor in having a range of
1297 * strong signals that can show at 100%
1298 */
1299 struct lg216x_state *state = fe->demodulator_priv;
1300 u16 snr;
1301 int ret;
1302#endif
1303 *strength = 0;
1304#if 0
1305 ret = fe->ops.read_snr(fe, &snr);
1306 if (lg_fail(ret))
1307 goto fail;
1308 /* Rather than use the 8.8 value snr, use state->snr which is 8.24 */
1309 /* scale the range 0 - 35*2^24 into 0 - 65535 */
1310 if (state->snr >= 8960 * 0x10000)
1311 *strength = 0xffff;
1312 else
1313 *strength = state->snr / 8960;
1314fail:
1315 return ret;
1316#else
1317 return 0;
1318#endif
1319}
1320
1321/* ------------------------------------------------------------------------ */
1322
1323static int lg216x_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
1324{
5444a1b7 1325#if 0
e26f2ae4
MK		 1326 struct lg216x_state *state = fe->demodulator_priv;
1327 int ret;
5444a1b7 1328
e26f2ae4
MK		 1329 ret = lg216x_read_rs_err_count(state,
1330 &fe->dtv_property_cache.atscmh_rs_err);
1331 if (lg_fail(ret))
1332 goto fail;
1333
1334 *ucblocks = fe->dtv_property_cache.atscmh_rs_err;
5444a1b7 1335fail:
10d67371
MK		 1336#else
1337 *ucblocks = 0;
1338#endif
e26f2ae4
MK		 1339 return 0;
1340}
1341
1342static int lg216x_get_tune_settings(struct dvb_frontend *fe,
1343 struct dvb_frontend_tune_settings
1344 *fe_tune_settings)
1345{
1346 fe_tune_settings->min_delay_ms = 500;
1347 lg_dbg("\n");
1348 return 0;
1349}
1350
1351static void lg216x_release(struct dvb_frontend *fe)
1352{
1353 struct lg216x_state *state = fe->demodulator_priv;
1354 lg_dbg("\n");
1355 kfree(state);
1356}
1357
bd336e63 1358static const struct dvb_frontend_ops lg2160_ops = {
e26f2ae4
MK		 1359 .delsys = { SYS_ATSCMH },
1360 .info = {
1361 .name = "LG Electronics LG2160 ATSC/MH Frontend",
e26f2ae4
MK		 1362 .frequency_min = 54000000,
1363 .frequency_max = 858000000,
1364 .frequency_stepsize = 62500,
1365 },
1366 .i2c_gate_ctrl = lg216x_i2c_gate_ctrl,
1367#if 0
1368 .init = lg216x_init,
1369 .sleep = lg216x_sleep,
1370#endif
1371 .get_property = lg216x_get_property,
1372
1373 .set_frontend = lg2160_set_frontend,
1374 .get_frontend = lg216x_get_frontend,
1375 .get_tune_settings = lg216x_get_tune_settings,
1376 .read_status = lg216x_read_status,
1377#if 0
1378 .read_ber = lg216x_read_ber,
1379#endif
1380 .read_signal_strength = lg216x_read_signal_strength,
1381 .read_snr = lg2160_read_snr,
1382 .read_ucblocks = lg216x_read_ucblocks,
1383 .release = lg216x_release,
1384};
1385
bd336e63 1386static const struct dvb_frontend_ops lg2161_ops = {
e26f2ae4
MK		 1387 .delsys = { SYS_ATSCMH },
1388 .info = {
1389 .name = "LG Electronics LG2161 ATSC/MH Frontend",
e26f2ae4
MK		 1390 .frequency_min = 54000000,
1391 .frequency_max = 858000000,
1392 .frequency_stepsize = 62500,
1393 },
1394 .i2c_gate_ctrl = lg216x_i2c_gate_ctrl,
1395#if 0
1396 .init = lg216x_init,
1397 .sleep = lg216x_sleep,
1398#endif
1399 .get_property = lg216x_get_property,
1400
1401 .set_frontend = lg2160_set_frontend,
1402 .get_frontend = lg216x_get_frontend,
1403 .get_tune_settings = lg216x_get_tune_settings,
1404 .read_status = lg216x_read_status,
1405#if 0
1406 .read_ber = lg216x_read_ber,
1407#endif
1408 .read_signal_strength = lg216x_read_signal_strength,
1409 .read_snr = lg2161_read_snr,
1410 .read_ucblocks = lg216x_read_ucblocks,
1411 .release = lg216x_release,
1412};
1413
1414struct dvb_frontend *lg2160_attach(const struct lg2160_config *config,
1415 struct i2c_adapter *i2c_adap)
1416{
1417 struct lg216x_state *state = NULL;
1418
1419 lg_dbg("(%d-%04x)\n",
1420 i2c_adap ? i2c_adapter_id(i2c_adap) : 0,
1421 config ? config->i2c_addr : 0);
1422
1423 state = kzalloc(sizeof(struct lg216x_state), GFP_KERNEL);
1a5d2da1
PST		 1424 if (!state)
1425 return NULL;
e26f2ae4
MK		 1426
1427 state->cfg = config;
1428 state->i2c_adap = i2c_adap;
1429 state->fic_ver = 0xff;
1430 state->parade_id = 0xff;
1431
1432 switch (config->lg_chip) {
1433 default:
1434 lg_warn("invalid chip requested, defaulting to LG2160");
1435 /* fall-thru */
1436 case LG2160:
1437 memcpy(&state->frontend.ops, &lg2160_ops,
1438 sizeof(struct dvb_frontend_ops));
1439 break;
1440 case LG2161:
1441 memcpy(&state->frontend.ops, &lg2161_ops,
1442 sizeof(struct dvb_frontend_ops));
1443 break;
1444 }
1445
1446 state->frontend.demodulator_priv = state;
1447 state->current_frequency = -1;
1448 /* parade 1 by default */
1449 state->frontend.dtv_property_cache.atscmh_parade_id = 1;
1450
1451 return &state->frontend;
e26f2ae4
MK		 1452}
1453EXPORT_SYMBOL(lg2160_attach);
1454
1455MODULE_DESCRIPTION("LG Electronics LG216x ATSC/MH Demodulator Driver");
1456MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1457MODULE_LICENSE("GPL");
1458MODULE_VERSION("0.3");
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