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[media] mxl111sf: add ATSC-MH support
[linux-2.6-block.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 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 */
21
22#include <linux/jiffies.h>
23#include <linux/dvb/frontend.h>
24#include "lg2160.h"
25
26static int debug;
27module_param(debug, int, 0644);
28MODULE_PARM_DESC(debug, "set debug level (info=1, reg=2 (or-able))");
29
30#define DBG_INFO 1
31#define DBG_REG 2
32
33#define lg_printk(kern, fmt, arg...) \
34 printk(kern "%s: " fmt, __func__, ##arg)
35
36#define lg_info(fmt, arg...) printk(KERN_INFO "lg2160: " fmt, ##arg)
37#define lg_warn(fmt, arg...) lg_printk(KERN_WARNING, fmt, ##arg)
38#define lg_err(fmt, arg...) lg_printk(KERN_ERR, fmt, ##arg)
39#define lg_dbg(fmt, arg...) if (debug & DBG_INFO) \
40 lg_printk(KERN_DEBUG, fmt, ##arg)
41#define lg_reg(fmt, arg...) if (debug & DBG_REG) \
42 lg_printk(KERN_DEBUG, fmt, ##arg)
43
44#define lg_fail(ret) \
45({ \
46 int __ret; \
47 __ret = (ret < 0); \
48 if (__ret) \
49 lg_err("error %d on line %d\n", ret, __LINE__); \
50 __ret; \
51})
52
53struct lg216x_state {
54 struct i2c_adapter *i2c_adap;
55 const struct lg2160_config *cfg;
56
57 struct dvb_frontend frontend;
58
59 u32 current_frequency;
60 u8 parade_id;
61 u8 fic_ver;
62 unsigned int last_reset;
63};
64
65/* ------------------------------------------------------------------------ */
66
67static int lg216x_write_reg(struct lg216x_state *state, u16 reg, u8 val)
68{
69 int ret;
70 u8 buf[] = { reg >> 8, reg & 0xff, val };
71 struct i2c_msg msg = {
72 .addr = state->cfg->i2c_addr, .flags = 0,
73 .buf = buf, .len = 3,
74 };
75
76 lg_reg("reg: 0x%04x, val: 0x%02x\n", reg, val);
77
78 ret = i2c_transfer(state->i2c_adap, &msg, 1);
79
80 if (ret != 1) {
81 lg_err("error (addr %02x %02x <- %02x, err = %i)\n",
82 msg.buf[0], msg.buf[1], msg.buf[2], ret);
83 if (ret < 0)
84 return ret;
85 else
86 return -EREMOTEIO;
87 }
88 return 0;
89}
90
91static int lg216x_read_reg(struct lg216x_state *state, u16 reg, u8 *val)
92{
93 int ret;
94 u8 reg_buf[] = { reg >> 8, reg & 0xff };
95 struct i2c_msg msg[] = {
96 { .addr = state->cfg->i2c_addr,
97 .flags = 0, .buf = reg_buf, .len = 2 },
98 { .addr = state->cfg->i2c_addr,
99 .flags = I2C_M_RD, .buf = val, .len = 1 },
100 };
101
102 lg_reg("reg: 0x%04x\n", reg);
103
104 ret = i2c_transfer(state->i2c_adap, msg, 2);
105
106 if (ret != 2) {
107 lg_err("error (addr %02x reg %04x error (ret == %i)\n",
108 state->cfg->i2c_addr, reg, ret);
109 if (ret < 0)
110 return ret;
111 else
112 return -EREMOTEIO;
113 }
114 return 0;
115}
116
117struct lg216x_reg {
118 u16 reg;
119 u8 val;
120};
121
122static int lg216x_write_regs(struct lg216x_state *state,
123 struct lg216x_reg *regs, int len)
124{
125 int i, ret;
126
127 lg_reg("writing %d registers...\n", len);
128
129 for (i = 0; i < len - 1; i++) {
130 ret = lg216x_write_reg(state, regs[i].reg, regs[i].val);
131 if (lg_fail(ret))
132 return ret;
133 }
134 return 0;
135}
136
137static int lg216x_set_reg_bit(struct lg216x_state *state,
138 u16 reg, int bit, int onoff)
139{
140 u8 val;
141 int ret;
142
143 lg_reg("reg: 0x%04x, bit: %d, level: %d\n", reg, bit, onoff);
144
145 ret = lg216x_read_reg(state, reg, &val);
146 if (lg_fail(ret))
147 goto fail;
148
149 val &= ~(1 << bit);
150 val |= (onoff & 1) << bit;
151
152 ret = lg216x_write_reg(state, reg, val);
153 lg_fail(ret);
154fail:
155 return ret;
156}
157
158/* ------------------------------------------------------------------------ */
159
160static int lg216x_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
161{
162 struct lg216x_state *state = fe->demodulator_priv;
163 int ret;
164
165 if (state->cfg->deny_i2c_rptr)
166 return 0;
167
168 lg_dbg("(%d)\n", enable);
169
170 ret = lg216x_set_reg_bit(state, 0x0000, 0, enable ? 0 : 1);
171
172 msleep(1);
173
174 return ret;
175}
176
177static int lg216x_soft_reset(struct lg216x_state *state)
178{
179 int ret;
180
181 lg_dbg("\n");
182
183 ret = lg216x_write_reg(state, 0x0002, 0x00);
184 if (lg_fail(ret))
185 goto fail;
186
187 msleep(20);
188 ret = lg216x_write_reg(state, 0x0002, 0x01);
189 if (lg_fail(ret))
190 goto fail;
191
192 state->last_reset = jiffies_to_msecs(jiffies);
193fail:
194 return ret;
195}
196
197static int lg216x_initialize(struct lg216x_state *state)
198{
199 int ret;
200
201 static struct lg216x_reg lg2160_init[] = {
202#if 0
203 { .reg = 0x0015, .val = 0xe6 },
204#else
205 { .reg = 0x0015, .val = 0xf7 },
206 { .reg = 0x001b, .val = 0x52 },
207 { .reg = 0x0208, .val = 0x00 },
208 { .reg = 0x0209, .val = 0x82 },
209 { .reg = 0x0210, .val = 0xf9 },
210 { .reg = 0x020a, .val = 0x00 },
211 { .reg = 0x020b, .val = 0x82 },
212 { .reg = 0x020d, .val = 0x28 },
213 { .reg = 0x020f, .val = 0x14 },
214#endif
215 };
216
217 static struct lg216x_reg lg2161_init[] = {
218 { .reg = 0x0000, .val = 0x41 },
219 { .reg = 0x0001, .val = 0xfb },
220 { .reg = 0x0216, .val = 0x00 },
221 { .reg = 0x0219, .val = 0x00 },
222 { .reg = 0x021b, .val = 0x55 },
223 { .reg = 0x0606, .val = 0x0a },
224 };
225
226 switch (state->cfg->lg_chip) {
227 case LG2160:
228 ret = lg216x_write_regs(state,
229 lg2160_init, ARRAY_SIZE(lg2160_init));
230 break;
231 case LG2161:
232 ret = lg216x_write_regs(state,
233 lg2161_init, ARRAY_SIZE(lg2161_init));
234 break;
235 default:
236 ret = -EINVAL;
237 break;
238 }
239 if (lg_fail(ret))
240 goto fail;
241
242 ret = lg216x_soft_reset(state);
243 lg_fail(ret);
244fail:
245 return ret;
246}
247
248/* ------------------------------------------------------------------------ */
249
250static int lg216x_set_if(struct lg216x_state *state)
251{
252 u8 val;
253 int ret;
254
255 lg_dbg("%d KHz\n", state->cfg->if_khz);
256
257 ret = lg216x_read_reg(state, 0x0132, &val);
258 if (lg_fail(ret))
259 goto fail;
260
261 val &= 0xfb;
262 val |= (0 == state->cfg->if_khz) ? 0x04 : 0x00;
263
264 ret = lg216x_write_reg(state, 0x0132, val);
265 lg_fail(ret);
266
267 /* if NOT zero IF, 6 MHz is the default */
268fail:
269 return ret;
270}
271
272/* ------------------------------------------------------------------------ */
273
274static int lg2160_agc_fix(struct lg216x_state *state,
275 int if_agc_fix, int rf_agc_fix)
276{
277 u8 val;
278 int ret;
279
280 ret = lg216x_read_reg(state, 0x0100, &val);
281 if (lg_fail(ret))
282 goto fail;
283
284 val &= 0xf3;
285 val |= (if_agc_fix) ? 0x08 : 0x00;
286 val |= (rf_agc_fix) ? 0x04 : 0x00;
287
288 ret = lg216x_write_reg(state, 0x0100, val);
289 lg_fail(ret);
290fail:
291 return ret;
292}
293
294#if 0
295static int lg2160_agc_freeze(struct lg216x_state *state,
296 int if_agc_freeze, int rf_agc_freeze)
297{
298 u8 val;
299 int ret;
300
301 ret = lg216x_read_reg(state, 0x0100, &val);
302 if (lg_fail(ret))
303 goto fail;
304
305 val &= 0xcf;
306 val |= (if_agc_freeze) ? 0x20 : 0x00;
307 val |= (rf_agc_freeze) ? 0x10 : 0x00;
308
309 ret = lg216x_write_reg(state, 0x0100, val);
310 lg_fail(ret);
311fail:
312 return ret;
313}
314#endif
315
316static int lg2160_agc_polarity(struct lg216x_state *state,
317 int if_agc_polarity, int rf_agc_polarity)
318{
319 u8 val;
320 int ret;
321
322 ret = lg216x_read_reg(state, 0x0100, &val);
323 if (lg_fail(ret))
324 goto fail;
325
326 val &= 0xfc;
327 val |= (if_agc_polarity) ? 0x02 : 0x00;
328 val |= (rf_agc_polarity) ? 0x01 : 0x00;
329
330 ret = lg216x_write_reg(state, 0x0100, val);
331 lg_fail(ret);
332fail:
333 return ret;
334}
335
336static int lg2160_tuner_pwr_save_polarity(struct lg216x_state *state,
337 int polarity)
338{
339 u8 val;
340 int ret;
341
342 ret = lg216x_read_reg(state, 0x0008, &val);
343 if (lg_fail(ret))
344 goto fail;
345
346 val &= 0xfe;
347 val |= (polarity) ? 0x01 : 0x00;
348
349 ret = lg216x_write_reg(state, 0x0008, val);
350 lg_fail(ret);
351fail:
352 return ret;
353}
354
355static int lg2160_spectrum_polarity(struct lg216x_state *state,
356 int inverted)
357{
358 u8 val;
359 int ret;
360
361 ret = lg216x_read_reg(state, 0x0132, &val);
362 if (lg_fail(ret))
363 goto fail;
364
365 val &= 0xfd;
366 val |= (inverted) ? 0x02 : 0x00;
367
368 ret = lg216x_write_reg(state, 0x0132, val);
369 lg_fail(ret);
370fail:
371 return lg216x_soft_reset(state);
372}
373
374static int lg2160_tuner_pwr_save(struct lg216x_state *state, int onoff)
375{
376 u8 val;
377 int ret;
378
379 ret = lg216x_read_reg(state, 0x0007, &val);
380 if (lg_fail(ret))
381 goto fail;
382
383 val &= 0xbf;
384 val |= (onoff) ? 0x40 : 0x00;
385
386 ret = lg216x_write_reg(state, 0x0007, val);
387 lg_fail(ret);
388fail:
389 return ret;
390}
391
392static int lg216x_set_parade(struct lg216x_state *state, int id)
393{
394 int ret;
395
396 ret = lg216x_write_reg(state, 0x013e, id & 0x7f);
397 if (lg_fail(ret))
398 goto fail;
399
400 state->parade_id = id & 0x7f;
401fail:
402 return ret;
403}
404
405static int lg216x_set_ensemble(struct lg216x_state *state, int id)
406{
407 int ret;
408 u16 reg;
409 u8 val;
410
411 switch (state->cfg->lg_chip) {
412 case LG2160:
413 reg = 0x0400;
414 break;
415 case LG2161:
416 reg = 0x0500;
417 break;
418 }
419
420 ret = lg216x_read_reg(state, reg, &val);
421 if (lg_fail(ret))
422 goto fail;
423
424 val &= 0xfe;
425 val |= (id) ? 0x01 : 0x00;
426
427 ret = lg216x_write_reg(state, reg, val);
428 lg_fail(ret);
429fail:
430 return ret;
431}
432
433static int lg2160_set_spi_clock(struct lg216x_state *state)
434{
435 u8 val;
436 int ret;
437
438 ret = lg216x_read_reg(state, 0x0014, &val);
439 if (lg_fail(ret))
440 goto fail;
441
442 val &= 0xf3;
443 val |= (state->cfg->spi_clock << 2);
444
445 ret = lg216x_write_reg(state, 0x0014, val);
446 lg_fail(ret);
447fail:
448 return ret;
449}
450
451static int lg2161_set_output_interface(struct lg216x_state *state)
452{
453 u8 val;
454 int ret;
455
456 ret = lg216x_read_reg(state, 0x0014, &val);
457 if (lg_fail(ret))
458 goto fail;
459
460 val &= ~0x07;
461 val |= state->cfg->output_if; /* FIXME: needs sanity check */
462
463 ret = lg216x_write_reg(state, 0x0014, val);
464 lg_fail(ret);
465fail:
466 return ret;
467}
468
469static int lg216x_enable_fic(struct lg216x_state *state, int onoff)
470{
471 int ret;
472
473 ret = lg216x_write_reg(state, 0x0017, 0x23);
474 if (lg_fail(ret))
475 goto fail;
476
477 ret = lg216x_write_reg(state, 0x0016, 0xfc);
478 if (lg_fail(ret))
479 goto fail;
480
481 switch (state->cfg->lg_chip) {
482 case LG2160:
483 ret = lg216x_write_reg(state, 0x0016,
484 0xfc | ((onoff) ? 0x02 : 0x00));
485 break;
486 case LG2161:
487 ret = lg216x_write_reg(state, 0x0016, (onoff) ? 0x10 : 0x00);
488 break;
489 }
490 if (lg_fail(ret))
491 goto fail;
492
493 ret = lg216x_initialize(state);
494 if (lg_fail(ret))
495 goto fail;
496
497 if (onoff) {
498 ret = lg216x_write_reg(state, 0x0017, 0x03);
499 lg_fail(ret);
500 }
501fail:
502 return ret;
503}
504
505/* ------------------------------------------------------------------------ */
506
507static int lg216x_get_fic_version(struct lg216x_state *state, u8 *ficver)
508{
509 u8 val;
510 int ret;
511
512 *ficver = 0xff; /* invalid value */
513
514 ret = lg216x_read_reg(state, 0x0128, &val);
515 if (lg_fail(ret))
516 goto fail;
517
518 *ficver = (val >> 3) & 0x1f;
519fail:
520 return ret;
521}
522
523#if 0
524static int lg2160_get_parade_id(struct lg216x_state *state, u8 *id)
525{
526 u8 val;
527 int ret;
528
529 *id = 0xff; /* invalid value */
530
531 ret = lg216x_read_reg(state, 0x0123, &val);
532 if (lg_fail(ret))
533 goto fail;
534
535 *id = val & 0x7f;
536fail:
537 return ret;
538}
539#endif
540
541static int lg216x_get_nog(struct lg216x_state *state, u8 *nog)
542{
543 u8 val;
544 int ret;
545
546 *nog = 0xff; /* invalid value */
547
548 ret = lg216x_read_reg(state, 0x0124, &val);
549 if (lg_fail(ret))
550 goto fail;
551
552 *nog = ((val >> 4) & 0x07) + 1;
553fail:
554 return ret;
555}
556
557static int lg216x_get_tnog(struct lg216x_state *state, u8 *tnog)
558{
559 u8 val;
560 int ret;
561
562 *tnog = 0xff; /* invalid value */
563
564 ret = lg216x_read_reg(state, 0x0125, &val);
565 if (lg_fail(ret))
566 goto fail;
567
568 *tnog = val & 0x1f;
569fail:
570 return ret;
571}
572
573static int lg216x_get_sgn(struct lg216x_state *state, u8 *sgn)
574{
575 u8 val;
576 int ret;
577
578 *sgn = 0xff; /* invalid value */
579
580 ret = lg216x_read_reg(state, 0x0124, &val);
581 if (lg_fail(ret))
582 goto fail;
583
584 *sgn = val & 0x0f;
585fail:
586 return ret;
587}
588
589static int lg216x_get_prc(struct lg216x_state *state, u8 *prc)
590{
591 u8 val;
592 int ret;
593
594 *prc = 0xff; /* invalid value */
595
596 ret = lg216x_read_reg(state, 0x0125, &val);
597 if (lg_fail(ret))
598 goto fail;
599
600 *prc = ((val >> 5) & 0x07) + 1;
601fail:
602 return ret;
603}
604
605/* ------------------------------------------------------------------------ */
606
607static int lg216x_get_rs_frame_mode(struct lg216x_state *state,
608 enum atscmh_rs_frame_mode *rs_framemode)
609{
610 u8 val;
611 int ret;
612
613 switch (state->cfg->lg_chip) {
614 case LG2160:
615 ret = lg216x_read_reg(state, 0x0410, &val);
616 break;
617 case LG2161:
618 ret = lg216x_read_reg(state, 0x0513, &val);
619 break;
620 default:
621 ret = -EINVAL;
622 }
623 if (lg_fail(ret))
624 goto fail;
625
626 switch ((val >> 4) & 0x03) {
627#if 1
628 default:
629#endif
630 case 0x00:
631 *rs_framemode = ATSCMH_RSFRAME_PRI_ONLY;
632 break;
633 case 0x01:
634 *rs_framemode = ATSCMH_RSFRAME_PRI_SEC;
635 break;
636#if 0
637 default:
638 *rs_framemode = ATSCMH_RSFRAME_RES;
639 break;
640#endif
641 }
642fail:
643 return ret;
644}
645
646static
647int lg216x_get_rs_frame_ensemble(struct lg216x_state *state,
648 enum atscmh_rs_frame_ensemble *rs_frame_ens)
649{
650 u8 val;
651 int ret;
652
653 switch (state->cfg->lg_chip) {
654 case LG2160:
655 ret = lg216x_read_reg(state, 0x0400, &val);
656 break;
657 case LG2161:
658 ret = lg216x_read_reg(state, 0x0500, &val);
659 break;
660 default:
661 ret = -EINVAL;
662 }
663 if (lg_fail(ret))
664 goto fail;
665
666 val &= 0x01;
667 *rs_frame_ens = (enum atscmh_rs_frame_ensemble) val;
668fail:
669 return ret;
670}
671
672static int lg216x_get_rs_code_mode(struct lg216x_state *state,
673 enum atscmh_rs_code_mode *rs_code_pri,
674 enum atscmh_rs_code_mode *rs_code_sec)
675{
676 u8 val;
677 int ret;
678
679 switch (state->cfg->lg_chip) {
680 case LG2160:
681 ret = lg216x_read_reg(state, 0x0410, &val);
682 break;
683 case LG2161:
684 ret = lg216x_read_reg(state, 0x0513, &val);
685 break;
686 default:
687 ret = -EINVAL;
688 }
689 if (lg_fail(ret))
690 goto fail;
691
692 *rs_code_pri = (enum atscmh_rs_code_mode) ((val >> 2) & 0x03);
693 *rs_code_sec = (enum atscmh_rs_code_mode) (val & 0x03);
694fail:
695 return ret;
696}
697
698static int lg216x_get_sccc_block_mode(struct lg216x_state *state,
699 enum atscmh_sccc_block_mode *sccc_block)
700{
701 u8 val;
702 int ret;
703
704 switch (state->cfg->lg_chip) {
705 case LG2160:
706 ret = lg216x_read_reg(state, 0x0315, &val);
707 break;
708 case LG2161:
709 ret = lg216x_read_reg(state, 0x0511, &val);
710 break;
711 default:
712 ret = -EINVAL;
713 }
714 if (lg_fail(ret))
715 goto fail;
716
717 switch (val & 0x03) {
718 case 0x00:
719 *sccc_block = ATSCMH_SCCC_BLK_SEP;
720 break;
721 case 0x01:
722 *sccc_block = ATSCMH_SCCC_BLK_COMB;
723 break;
724 default:
725 *sccc_block = ATSCMH_SCCC_BLK_RES;
726 break;
727 }
728fail:
729 return ret;
730}
731
732static int lg216x_get_sccc_code_mode(struct lg216x_state *state,
733 enum atscmh_sccc_code_mode *mode_a,
734 enum atscmh_sccc_code_mode *mode_b,
735 enum atscmh_sccc_code_mode *mode_c,
736 enum atscmh_sccc_code_mode *mode_d)
737{
738 u8 val;
739 int ret;
740
741 switch (state->cfg->lg_chip) {
742 case LG2160:
743 ret = lg216x_read_reg(state, 0x0316, &val);
744 break;
745 case LG2161:
746 ret = lg216x_read_reg(state, 0x0512, &val);
747 break;
748 default:
749 ret = -EINVAL;
750 }
751 if (lg_fail(ret))
752 goto fail;
753
754 switch ((val >> 6) & 0x03) {
755 case 0x00:
756 *mode_a = ATSCMH_SCCC_CODE_HLF;
757 break;
758 case 0x01:
759 *mode_a = ATSCMH_SCCC_CODE_QTR;
760 break;
761 default:
762 *mode_a = ATSCMH_SCCC_CODE_RES;
763 break;
764 }
765
766 switch ((val >> 4) & 0x03) {
767 case 0x00:
768 *mode_b = ATSCMH_SCCC_CODE_HLF;
769 break;
770 case 0x01:
771 *mode_b = ATSCMH_SCCC_CODE_QTR;
772 break;
773 default:
774 *mode_b = ATSCMH_SCCC_CODE_RES;
775 break;
776 }
777
778 switch ((val >> 2) & 0x03) {
779 case 0x00:
780 *mode_c = ATSCMH_SCCC_CODE_HLF;
781 break;
782 case 0x01:
783 *mode_c = ATSCMH_SCCC_CODE_QTR;
784 break;
785 default:
786 *mode_c = ATSCMH_SCCC_CODE_RES;
787 break;
788 }
789
790 switch (val & 0x03) {
791 case 0x00:
792 *mode_d = ATSCMH_SCCC_CODE_HLF;
793 break;
794 case 0x01:
795 *mode_d = ATSCMH_SCCC_CODE_QTR;
796 break;
797 default:
798 *mode_d = ATSCMH_SCCC_CODE_RES;
799 break;
800 }
801fail:
802 return ret;
803}
804
805/* ------------------------------------------------------------------------ */
806
807static int lg216x_read_fic_err_count(struct lg216x_state *state, u8 *err)
808{
809 u8 fic_err;
810 int ret;
811
812 *err = 0;
813
814 switch (state->cfg->lg_chip) {
815 case LG2160:
816 ret = lg216x_read_reg(state, 0x0012, &fic_err);
817 break;
818 case LG2161:
819 ret = lg216x_read_reg(state, 0x001e, &fic_err);
820 break;
821 }
822 if (lg_fail(ret))
823 goto fail;
824
825 *err = fic_err;
826fail:
827 return ret;
828}
829
830static int lg2160_read_crc_err_count(struct lg216x_state *state, u16 *err)
831{
832 u8 crc_err1, crc_err2;
833 int ret;
834
835 *err = 0;
836
837 ret = lg216x_read_reg(state, 0x0411, &crc_err1);
838 if (lg_fail(ret))
839 goto fail;
840
841 ret = lg216x_read_reg(state, 0x0412, &crc_err2);
842 if (lg_fail(ret))
843 goto fail;
844
845 *err = (u16)(((crc_err2 & 0x0f) << 8) | crc_err1);
846fail:
847 return ret;
848}
849
850static int lg2161_read_crc_err_count(struct lg216x_state *state, u16 *err)
851{
852 u8 crc_err;
853 int ret;
854
855 *err = 0;
856
857 ret = lg216x_read_reg(state, 0x0612, &crc_err);
858 if (lg_fail(ret))
859 goto fail;
860
861 *err = (u16)crc_err;
862fail:
863 return ret;
864}
865
866static int lg216x_read_crc_err_count(struct lg216x_state *state, u16 *err)
867{
868 int ret;
869 switch (state->cfg->lg_chip) {
870 case LG2160:
871 ret = lg2160_read_crc_err_count(state, err);
872 break;
873 case LG2161:
874 ret = lg2161_read_crc_err_count(state, err);
875 break;
876 default:
877 ret = -EINVAL;
878 break;
879 }
880 return ret;
881}
882
883static int lg2160_read_rs_err_count(struct lg216x_state *state, u16 *err)
884{
885 u8 rs_err1, rs_err2;
886 int ret;
887
888 *err = 0;
889
890 ret = lg216x_read_reg(state, 0x0413, &rs_err1);
891 if (lg_fail(ret))
892 goto fail;
893
894 ret = lg216x_read_reg(state, 0x0414, &rs_err2);
895 if (lg_fail(ret))
896 goto fail;
897
898 *err = (u16)(((rs_err2 & 0x0f) << 8) | rs_err1);
899fail:
900 return ret;
901}
902
903static int lg2161_read_rs_err_count(struct lg216x_state *state, u16 *err)
904{
905 u8 rs_err1, rs_err2;
906 int ret;
907
908 *err = 0;
909
910 ret = lg216x_read_reg(state, 0x0613, &rs_err1);
911 if (lg_fail(ret))
912 goto fail;
913
914 ret = lg216x_read_reg(state, 0x0614, &rs_err2);
915 if (lg_fail(ret))
916 goto fail;
917
918 *err = (u16)((rs_err1 << 8) | rs_err2);
919fail:
920 return ret;
921}
922
923static int lg216x_read_rs_err_count(struct lg216x_state *state, u16 *err)
924{
925 int ret;
926 switch (state->cfg->lg_chip) {
927 case LG2160:
928 ret = lg2160_read_rs_err_count(state, err);
929 break;
930 case LG2161:
931 ret = lg2161_read_rs_err_count(state, err);
932 break;
933 default:
934 ret = -EINVAL;
935 break;
936 }
937 return ret;
938}
939
940/* ------------------------------------------------------------------------ */
941
942static int lg216x_get_frontend(struct dvb_frontend *fe)
943{
944 struct lg216x_state *state = fe->demodulator_priv;
945 int ret;
946
947 lg_dbg("\n");
948
949 fe->dtv_property_cache.modulation = VSB_8;
950 fe->dtv_property_cache.frequency = state->current_frequency;
951 fe->dtv_property_cache.delivery_system = SYS_ATSCMH;
952
953 ret = lg216x_get_fic_version(state,
954 &fe->dtv_property_cache.atscmh_fic_ver);
955 if (lg_fail(ret))
956 goto fail;
957 if (state->fic_ver != fe->dtv_property_cache.atscmh_fic_ver) {
958 state->fic_ver = fe->dtv_property_cache.atscmh_fic_ver;
959
960#if 0
961 ret = lg2160_get_parade_id(state,
962 &fe->dtv_property_cache.atscmh_parade_id);
963 if (lg_fail(ret))
964 goto fail;
965/* #else */
966 fe->dtv_property_cache.atscmh_parade_id = state->parade_id;
967#endif
968 ret = lg216x_get_nog(state,
969 &fe->dtv_property_cache.atscmh_nog);
970 if (lg_fail(ret))
971 goto fail;
972 ret = lg216x_get_tnog(state,
973 &fe->dtv_property_cache.atscmh_tnog);
974 if (lg_fail(ret))
975 goto fail;
976 ret = lg216x_get_sgn(state,
977 &fe->dtv_property_cache.atscmh_sgn);
978 if (lg_fail(ret))
979 goto fail;
980 ret = lg216x_get_prc(state,
981 &fe->dtv_property_cache.atscmh_prc);
982 if (lg_fail(ret))
983 goto fail;
984
985 ret = lg216x_get_rs_frame_mode(state,
986 (enum atscmh_rs_frame_mode *)
987 &fe->dtv_property_cache.atscmh_rs_frame_mode);
988 if (lg_fail(ret))
989 goto fail;
990 ret = lg216x_get_rs_frame_ensemble(state,
991 (enum atscmh_rs_frame_ensemble *)
992 &fe->dtv_property_cache.atscmh_rs_frame_ensemble);
993 if (lg_fail(ret))
994 goto fail;
995 ret = lg216x_get_rs_code_mode(state,
996 (enum atscmh_rs_code_mode *)
997 &fe->dtv_property_cache.atscmh_rs_code_mode_pri,
998 (enum atscmh_rs_code_mode *)
999 &fe->dtv_property_cache.atscmh_rs_code_mode_sec);
1000 if (lg_fail(ret))
1001 goto fail;
1002 ret = lg216x_get_sccc_block_mode(state,
1003 (enum atscmh_sccc_block_mode *)
1004 &fe->dtv_property_cache.atscmh_sccc_block_mode);
1005 if (lg_fail(ret))
1006 goto fail;
1007 ret = lg216x_get_sccc_code_mode(state,
1008 (enum atscmh_sccc_code_mode *)
1009 &fe->dtv_property_cache.atscmh_sccc_code_mode_a,
1010 (enum atscmh_sccc_code_mode *)
1011 &fe->dtv_property_cache.atscmh_sccc_code_mode_b,
1012 (enum atscmh_sccc_code_mode *)
1013 &fe->dtv_property_cache.atscmh_sccc_code_mode_c,
1014 (enum atscmh_sccc_code_mode *)
1015 &fe->dtv_property_cache.atscmh_sccc_code_mode_d);
1016 if (lg_fail(ret))
1017 goto fail;
1018 }
1019 ret = lg216x_read_fic_err_count(state,
1020 (u8 *)&fe->dtv_property_cache.atscmh_fic_err);
1021 if (lg_fail(ret))
1022 goto fail;
1023 ret = lg216x_read_crc_err_count(state,
1024 &fe->dtv_property_cache.atscmh_crc_err);
1025 if (lg_fail(ret))
1026 goto fail;
1027 ret = lg216x_read_rs_err_count(state,
1028 &fe->dtv_property_cache.atscmh_rs_err);
1029 if (lg_fail(ret))
1030 goto fail;
1031
1032 switch (state->cfg->lg_chip) {
1033 case LG2160:
1034 if (((fe->dtv_property_cache.atscmh_rs_err >= 240) &&
1035 (fe->dtv_property_cache.atscmh_crc_err >= 240)) &&
1036 ((jiffies_to_msecs(jiffies) - state->last_reset) > 6000))
1037 ret = lg216x_soft_reset(state);
1038 break;
1039 case LG2161:
1040 /* no fix needed here (as far as we know) */
1041 ret = 0;
1042 break;
1043 }
1044 lg_fail(ret);
1045fail:
1046 return ret;
1047}
1048
1049static int lg216x_get_property(struct dvb_frontend *fe,
1050 struct dtv_property *tvp)
1051{
1052 return (DTV_ATSCMH_FIC_VER == tvp->cmd) ?
1053 lg216x_get_frontend(fe) : 0;
1054}
1055
1056
1057static int lg2160_set_frontend(struct dvb_frontend *fe)
1058{
1059 struct lg216x_state *state = fe->demodulator_priv;
1060 int ret;
1061
1062 lg_dbg("(%d)\n", fe->dtv_property_cache.frequency);
1063
1064 if (fe->ops.tuner_ops.set_params) {
1065 ret = fe->ops.tuner_ops.set_params(fe);
1066 if (fe->ops.i2c_gate_ctrl)
1067 fe->ops.i2c_gate_ctrl(fe, 0);
1068 if (lg_fail(ret))
1069 goto fail;
1070 state->current_frequency = fe->dtv_property_cache.frequency;
1071 }
1072
1073 ret = lg2160_agc_fix(state, 0, 0);
1074 if (lg_fail(ret))
1075 goto fail;
1076 ret = lg2160_agc_polarity(state, 0, 0);
1077 if (lg_fail(ret))
1078 goto fail;
1079 ret = lg2160_tuner_pwr_save_polarity(state, 1);
1080 if (lg_fail(ret))
1081 goto fail;
1082 ret = lg216x_set_if(state);
1083 if (lg_fail(ret))
1084 goto fail;
1085 ret = lg2160_spectrum_polarity(state, state->cfg->spectral_inversion);
1086 if (lg_fail(ret))
1087 goto fail;
1088
1089 /* be tuned before this point */
1090 ret = lg216x_soft_reset(state);
1091 if (lg_fail(ret))
1092 goto fail;
1093
1094 ret = lg2160_tuner_pwr_save(state, 0);
1095 if (lg_fail(ret))
1096 goto fail;
1097
1098 switch (state->cfg->lg_chip) {
1099 case LG2160:
1100 ret = lg2160_set_spi_clock(state);
1101 if (lg_fail(ret))
1102 goto fail;
1103 break;
1104 case LG2161:
1105 ret = lg2161_set_output_interface(state);
1106 if (lg_fail(ret))
1107 goto fail;
1108 break;
1109 }
1110
1111 ret = lg216x_set_parade(state, fe->dtv_property_cache.atscmh_parade_id);
1112 if (lg_fail(ret))
1113 goto fail;
1114
1115 ret = lg216x_set_ensemble(state,
1116 fe->dtv_property_cache.atscmh_rs_frame_ensemble);
1117 if (lg_fail(ret))
1118 goto fail;
1119
1120 ret = lg216x_initialize(state);
1121 if (lg_fail(ret))
1122 goto fail;
1123
1124 ret = lg216x_enable_fic(state, 1);
1125 lg_fail(ret);
1126
1127 lg216x_get_frontend(fe);
1128fail:
1129 return ret;
1130}
1131
1132/* ------------------------------------------------------------------------ */
1133
1134static int lg2160_read_lock_status(struct lg216x_state *state,
1135 int *acq_lock, int *sync_lock)
1136{
1137 u8 val;
1138 int ret;
1139
1140 *acq_lock = 0;
1141 *sync_lock = 0;
1142
1143 ret = lg216x_read_reg(state, 0x011b, &val);
1144 if (lg_fail(ret))
1145 goto fail;
1146
1147 *sync_lock = (val & 0x20) ? 0 : 1;
1148 *acq_lock = (val & 0x40) ? 0 : 1;
1149fail:
1150 return ret;
1151}
1152
1153#ifdef USE_LG2161_LOCK_BITS
1154static int lg2161_read_lock_status(struct lg216x_state *state,
1155 int *acq_lock, int *sync_lock)
1156{
1157 u8 val;
1158 int ret;
1159
1160 *acq_lock = 0;
1161 *sync_lock = 0;
1162
1163 ret = lg216x_read_reg(state, 0x0304, &val);
1164 if (lg_fail(ret))
1165 goto fail;
1166
1167 *sync_lock = (val & 0x80) ? 0 : 1;
1168
1169 ret = lg216x_read_reg(state, 0x011b, &val);
1170 if (lg_fail(ret))
1171 goto fail;
1172
1173 *acq_lock = (val & 0x40) ? 0 : 1;
1174fail:
1175 return ret;
1176}
1177#endif
1178
1179static int lg216x_read_lock_status(struct lg216x_state *state,
1180 int *acq_lock, int *sync_lock)
1181{
1182#ifdef USE_LG2161_LOCK_BITS
1183 int ret;
1184 switch (state->cfg->lg_chip) {
1185 case LG2160:
1186 ret = lg2160_read_lock_status(state, acq_lock, sync_lock);
1187 break;
1188 case LG2161:
1189 ret = lg2161_read_lock_status(state, acq_lock, sync_lock);
1190 break;
1191 default:
1192 ret = -EINVAL;
1193 break;
1194 }
1195 return ret;
1196#else
1197 return lg2160_read_lock_status(state, acq_lock, sync_lock);
1198#endif
1199}
1200
1201static int lg216x_read_status(struct dvb_frontend *fe, fe_status_t *status)
1202{
1203 struct lg216x_state *state = fe->demodulator_priv;
1204 int ret, acq_lock, sync_lock;
1205
1206 *status = 0;
1207
1208 ret = lg216x_read_lock_status(state, &acq_lock, &sync_lock);
1209 if (lg_fail(ret))
1210 goto fail;
1211
1212 lg_dbg("%s%s\n",
1213 acq_lock ? "SIGNALEXIST " : "",
1214 sync_lock ? "SYNCLOCK" : "");
1215
1216 if (acq_lock)
1217 *status |= FE_HAS_SIGNAL;
1218 if (sync_lock)
1219 *status |= FE_HAS_SYNC;
1220
1221 if (*status)
1222 *status |= FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_LOCK;
1223
1224fail:
1225 return ret;
1226}
1227
1228/* ------------------------------------------------------------------------ */
1229
1230static int lg2160_read_snr(struct dvb_frontend *fe, u16 *snr)
1231{
1232 struct lg216x_state *state = fe->demodulator_priv;
1233 u8 snr1, snr2;
1234 int ret;
1235
1236 *snr = 0;
1237
1238 ret = lg216x_read_reg(state, 0x0202, &snr1);
1239 if (lg_fail(ret))
1240 goto fail;
1241
1242 ret = lg216x_read_reg(state, 0x0203, &snr2);
1243 if (lg_fail(ret))
1244 goto fail;
1245
1246 if ((snr1 == 0xba) || (snr2 == 0xdf))
1247 *snr = 0;
1248 else
1249#if 1
1250 *snr = ((snr1 >> 4) * 100) + ((snr1 & 0x0f) * 10) + (snr2 >> 4);
1251#else /* BCD */
1252 *snr = (snr2 | (snr1 << 8));
1253#endif
1254fail:
1255 return ret;
1256}
1257
1258static int lg2161_read_snr(struct dvb_frontend *fe, u16 *snr)
1259{
1260 struct lg216x_state *state = fe->demodulator_priv;
1261 u8 snr1, snr2;
1262 int ret;
1263
1264 *snr = 0;
1265
1266 ret = lg216x_read_reg(state, 0x0302, &snr1);
1267 if (lg_fail(ret))
1268 goto fail;
1269
1270 ret = lg216x_read_reg(state, 0x0303, &snr2);
1271 if (lg_fail(ret))
1272 goto fail;
1273
1274 if ((snr1 == 0xba) || (snr2 == 0xfd))
1275 *snr = 0;
1276 else
1277
1278 *snr = ((snr1 >> 4) * 100) + ((snr1 & 0x0f) * 10) + (snr2 & 0x0f);
1279fail:
1280 return ret;
1281}
1282
1283static int lg216x_read_signal_strength(struct dvb_frontend *fe,
1284 u16 *strength)
1285{
1286#if 0
1287 /* borrowed from lgdt330x.c
1288 *
1289 * Calculate strength from SNR up to 35dB
1290 * Even though the SNR can go higher than 35dB,
1291 * there is some comfort factor in having a range of
1292 * strong signals that can show at 100%
1293 */
1294 struct lg216x_state *state = fe->demodulator_priv;
1295 u16 snr;
1296 int ret;
1297#endif
1298 *strength = 0;
1299#if 0
1300 ret = fe->ops.read_snr(fe, &snr);
1301 if (lg_fail(ret))
1302 goto fail;
1303 /* Rather than use the 8.8 value snr, use state->snr which is 8.24 */
1304 /* scale the range 0 - 35*2^24 into 0 - 65535 */
1305 if (state->snr >= 8960 * 0x10000)
1306 *strength = 0xffff;
1307 else
1308 *strength = state->snr / 8960;
1309fail:
1310 return ret;
1311#else
1312 return 0;
1313#endif
1314}
1315
1316/* ------------------------------------------------------------------------ */
1317
1318static int lg216x_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
1319{
1320 struct lg216x_state *state = fe->demodulator_priv;
1321 int ret;
1322
1323 ret = lg216x_read_rs_err_count(state,
1324 &fe->dtv_property_cache.atscmh_rs_err);
1325 if (lg_fail(ret))
1326 goto fail;
1327
1328 *ucblocks = fe->dtv_property_cache.atscmh_rs_err;
1329fail:
1330 return 0;
1331}
1332
1333static int lg216x_get_tune_settings(struct dvb_frontend *fe,
1334 struct dvb_frontend_tune_settings
1335 *fe_tune_settings)
1336{
1337 fe_tune_settings->min_delay_ms = 500;
1338 lg_dbg("\n");
1339 return 0;
1340}
1341
1342static void lg216x_release(struct dvb_frontend *fe)
1343{
1344 struct lg216x_state *state = fe->demodulator_priv;
1345 lg_dbg("\n");
1346 kfree(state);
1347}
1348
1349static struct dvb_frontend_ops lg2160_ops = {
1350 .delsys = { SYS_ATSCMH },
1351 .info = {
1352 .name = "LG Electronics LG2160 ATSC/MH Frontend",
e26f2ae4
MK		 1353 .frequency_min = 54000000,
1354 .frequency_max = 858000000,
1355 .frequency_stepsize = 62500,
1356 },
1357 .i2c_gate_ctrl = lg216x_i2c_gate_ctrl,
1358#if 0
1359 .init = lg216x_init,
1360 .sleep = lg216x_sleep,
1361#endif
1362 .get_property = lg216x_get_property,
1363
1364 .set_frontend = lg2160_set_frontend,
1365 .get_frontend = lg216x_get_frontend,
1366 .get_tune_settings = lg216x_get_tune_settings,
1367 .read_status = lg216x_read_status,
1368#if 0
1369 .read_ber = lg216x_read_ber,
1370#endif
1371 .read_signal_strength = lg216x_read_signal_strength,
1372 .read_snr = lg2160_read_snr,
1373 .read_ucblocks = lg216x_read_ucblocks,
1374 .release = lg216x_release,
1375};
1376
1377static struct dvb_frontend_ops lg2161_ops = {
1378 .delsys = { SYS_ATSCMH },
1379 .info = {
1380 .name = "LG Electronics LG2161 ATSC/MH Frontend",
e26f2ae4
MK		 1381 .frequency_min = 54000000,
1382 .frequency_max = 858000000,
1383 .frequency_stepsize = 62500,
1384 },
1385 .i2c_gate_ctrl = lg216x_i2c_gate_ctrl,
1386#if 0
1387 .init = lg216x_init,
1388 .sleep = lg216x_sleep,
1389#endif
1390 .get_property = lg216x_get_property,
1391
1392 .set_frontend = lg2160_set_frontend,
1393 .get_frontend = lg216x_get_frontend,
1394 .get_tune_settings = lg216x_get_tune_settings,
1395 .read_status = lg216x_read_status,
1396#if 0
1397 .read_ber = lg216x_read_ber,
1398#endif
1399 .read_signal_strength = lg216x_read_signal_strength,
1400 .read_snr = lg2161_read_snr,
1401 .read_ucblocks = lg216x_read_ucblocks,
1402 .release = lg216x_release,
1403};
1404
1405struct dvb_frontend *lg2160_attach(const struct lg2160_config *config,
1406 struct i2c_adapter *i2c_adap)
1407{
1408 struct lg216x_state *state = NULL;
1409
1410 lg_dbg("(%d-%04x)\n",
1411 i2c_adap ? i2c_adapter_id(i2c_adap) : 0,
1412 config ? config->i2c_addr : 0);
1413
1414 state = kzalloc(sizeof(struct lg216x_state), GFP_KERNEL);
1415 if (state == NULL)
1416 goto fail;
1417
1418 state->cfg = config;
1419 state->i2c_adap = i2c_adap;
1420 state->fic_ver = 0xff;
1421 state->parade_id = 0xff;
1422
1423 switch (config->lg_chip) {
1424 default:
1425 lg_warn("invalid chip requested, defaulting to LG2160");
1426 /* fall-thru */
1427 case LG2160:
1428 memcpy(&state->frontend.ops, &lg2160_ops,
1429 sizeof(struct dvb_frontend_ops));
1430 break;
1431 case LG2161:
1432 memcpy(&state->frontend.ops, &lg2161_ops,
1433 sizeof(struct dvb_frontend_ops));
1434 break;
1435 }
1436
1437 state->frontend.demodulator_priv = state;
1438 state->current_frequency = -1;
1439 /* parade 1 by default */
1440 state->frontend.dtv_property_cache.atscmh_parade_id = 1;
1441
1442 return &state->frontend;
1443fail:
1444 lg_warn("unable to detect LG216x hardware\n");
1445 kfree(state);
1446 return NULL;
1447}
1448EXPORT_SYMBOL(lg2160_attach);
1449
1450MODULE_DESCRIPTION("LG Electronics LG216x ATSC/MH Demodulator Driver");
1451MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1452MODULE_LICENSE("GPL");
1453MODULE_VERSION("0.3");
1454
1455/*
1456 * Local variables:
1457 * c-basic-offset: 8
1458 * End:
1459 */
Linux 6.x block layer and io_uring tree(s)