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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; 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
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 default:
417 reg = 0x0500;
418 break;
419 }
420
421 ret = lg216x_read_reg(state, reg, &val);
422 if (lg_fail(ret))
423 goto fail;
424
425 val &= 0xfe;
426 val |= (id) ? 0x01 : 0x00;
427
428 ret = lg216x_write_reg(state, reg, val);
429 lg_fail(ret);
430fail:
431 return ret;
432}
433
434static int lg2160_set_spi_clock(struct lg216x_state *state)
435{
436 u8 val;
437 int ret;
438
439 ret = lg216x_read_reg(state, 0x0014, &val);
440 if (lg_fail(ret))
441 goto fail;
442
443 val &= 0xf3;
444 val |= (state->cfg->spi_clock << 2);
445
446 ret = lg216x_write_reg(state, 0x0014, val);
447 lg_fail(ret);
448fail:
449 return ret;
450}
451
452static int lg2161_set_output_interface(struct lg216x_state *state)
453{
454 u8 val;
455 int ret;
456
457 ret = lg216x_read_reg(state, 0x0014, &val);
458 if (lg_fail(ret))
459 goto fail;
460
461 val &= ~0x07;
462 val |= state->cfg->output_if;
463
464 ret = lg216x_write_reg(state, 0x0014, val);
465 lg_fail(ret);
466fail:
467 return ret;
468}
469
470static int lg216x_enable_fic(struct lg216x_state *state, int onoff)
471{
472 int ret;
473
474 ret = lg216x_write_reg(state, 0x0017, 0x23);
475 if (lg_fail(ret))
476 goto fail;
477
478 ret = lg216x_write_reg(state, 0x0016, 0xfc);
479 if (lg_fail(ret))
480 goto fail;
481
482 switch (state->cfg->lg_chip) {
483 case LG2160:
484 ret = lg216x_write_reg(state, 0x0016,
485 0xfc | ((onoff) ? 0x02 : 0x00));
486 break;
487 case LG2161:
488 ret = lg216x_write_reg(state, 0x0016, (onoff) ? 0x10 : 0x00);
489 break;
490 }
491 if (lg_fail(ret))
492 goto fail;
493
494 ret = lg216x_initialize(state);
495 if (lg_fail(ret))
496 goto fail;
497
498 if (onoff) {
499 ret = lg216x_write_reg(state, 0x0017, 0x03);
500 lg_fail(ret);
501 }
502fail:
503 return ret;
504}
505
506
507
508static int lg216x_get_fic_version(struct lg216x_state *state, u8 *ficver)
509{
510 u8 val;
511 int ret;
512
513 *ficver = 0xff;
514
515 ret = lg216x_read_reg(state, 0x0128, &val);
516 if (lg_fail(ret))
517 goto fail;
518
519 *ficver = (val >> 3) & 0x1f;
520fail:
521 return ret;
522}
523
524#if 0
525static int lg2160_get_parade_id(struct lg216x_state *state, u8 *id)
526{
527 u8 val;
528 int ret;
529
530 *id = 0xff;
531
532 ret = lg216x_read_reg(state, 0x0123, &val);
533 if (lg_fail(ret))
534 goto fail;
535
536 *id = val & 0x7f;
537fail:
538 return ret;
539}
540#endif
541
542static int lg216x_get_nog(struct lg216x_state *state, u8 *nog)
543{
544 u8 val;
545 int ret;
546
547 *nog = 0xff;
548
549 ret = lg216x_read_reg(state, 0x0124, &val);
550 if (lg_fail(ret))
551 goto fail;
552
553 *nog = ((val >> 4) & 0x07) + 1;
554fail:
555 return ret;
556}
557
558static int lg216x_get_tnog(struct lg216x_state *state, u8 *tnog)
559{
560 u8 val;
561 int ret;
562
563 *tnog = 0xff;
564
565 ret = lg216x_read_reg(state, 0x0125, &val);
566 if (lg_fail(ret))
567 goto fail;
568
569 *tnog = val & 0x1f;
570fail:
571 return ret;
572}
573
574static int lg216x_get_sgn(struct lg216x_state *state, u8 *sgn)
575{
576 u8 val;
577 int ret;
578
579 *sgn = 0xff;
580
581 ret = lg216x_read_reg(state, 0x0124, &val);
582 if (lg_fail(ret))
583 goto fail;
584
585 *sgn = val & 0x0f;
586fail:
587 return ret;
588}
589
590static int lg216x_get_prc(struct lg216x_state *state, u8 *prc)
591{
592 u8 val;
593 int ret;
594
595 *prc = 0xff;
596
597 ret = lg216x_read_reg(state, 0x0125, &val);
598 if (lg_fail(ret))
599 goto fail;
600
601 *prc = ((val >> 5) & 0x07) + 1;
602fail:
603 return ret;
604}
605
606
607
608static int lg216x_get_rs_frame_mode(struct lg216x_state *state,
609 enum atscmh_rs_frame_mode *rs_framemode)
610{
611 u8 val;
612 int ret;
613
614 switch (state->cfg->lg_chip) {
615 case LG2160:
616 ret = lg216x_read_reg(state, 0x0410, &val);
617 break;
618 case LG2161:
619 ret = lg216x_read_reg(state, 0x0513, &val);
620 break;
621 default:
622 ret = -EINVAL;
623 }
624 if (lg_fail(ret))
625 goto fail;
626
627 switch ((val >> 4) & 0x03) {
628#if 1
629 default:
630#endif
631 case 0x00:
632 *rs_framemode = ATSCMH_RSFRAME_PRI_ONLY;
633 break;
634 case 0x01:
635 *rs_framemode = ATSCMH_RSFRAME_PRI_SEC;
636 break;
637#if 0
638 default:
639 *rs_framemode = ATSCMH_RSFRAME_RES;
640 break;
641#endif
642 }
643fail:
644 return ret;
645}
646
647static
648int lg216x_get_rs_frame_ensemble(struct lg216x_state *state,
649 enum atscmh_rs_frame_ensemble *rs_frame_ens)
650{
651 u8 val;
652 int ret;
653
654 switch (state->cfg->lg_chip) {
655 case LG2160:
656 ret = lg216x_read_reg(state, 0x0400, &val);
657 break;
658 case LG2161:
659 ret = lg216x_read_reg(state, 0x0500, &val);
660 break;
661 default:
662 ret = -EINVAL;
663 }
664 if (lg_fail(ret))
665 goto fail;
666
667 val &= 0x01;
668 *rs_frame_ens = (enum atscmh_rs_frame_ensemble) val;
669fail:
670 return ret;
671}
672
673static int lg216x_get_rs_code_mode(struct lg216x_state *state,
674 enum atscmh_rs_code_mode *rs_code_pri,
675 enum atscmh_rs_code_mode *rs_code_sec)
676{
677 u8 val;
678 int ret;
679
680 switch (state->cfg->lg_chip) {
681 case LG2160:
682 ret = lg216x_read_reg(state, 0x0410, &val);
683 break;
684 case LG2161:
685 ret = lg216x_read_reg(state, 0x0513, &val);
686 break;
687 default:
688 ret = -EINVAL;
689 }
690 if (lg_fail(ret))
691 goto fail;
692
693 *rs_code_pri = (enum atscmh_rs_code_mode) ((val >> 2) & 0x03);
694 *rs_code_sec = (enum atscmh_rs_code_mode) (val & 0x03);
695fail:
696 return ret;
697}
698
699static int lg216x_get_sccc_block_mode(struct lg216x_state *state,
700 enum atscmh_sccc_block_mode *sccc_block)
701{
702 u8 val;
703 int ret;
704
705 switch (state->cfg->lg_chip) {
706 case LG2160:
707 ret = lg216x_read_reg(state, 0x0315, &val);
708 break;
709 case LG2161:
710 ret = lg216x_read_reg(state, 0x0511, &val);
711 break;
712 default:
713 ret = -EINVAL;
714 }
715 if (lg_fail(ret))
716 goto fail;
717
718 switch (val & 0x03) {
719 case 0x00:
720 *sccc_block = ATSCMH_SCCC_BLK_SEP;
721 break;
722 case 0x01:
723 *sccc_block = ATSCMH_SCCC_BLK_COMB;
724 break;
725 default:
726 *sccc_block = ATSCMH_SCCC_BLK_RES;
727 break;
728 }
729fail:
730 return ret;
731}
732
733static int lg216x_get_sccc_code_mode(struct lg216x_state *state,
734 enum atscmh_sccc_code_mode *mode_a,
735 enum atscmh_sccc_code_mode *mode_b,
736 enum atscmh_sccc_code_mode *mode_c,
737 enum atscmh_sccc_code_mode *mode_d)
738{
739 u8 val;
740 int ret;
741
742 switch (state->cfg->lg_chip) {
743 case LG2160:
744 ret = lg216x_read_reg(state, 0x0316, &val);
745 break;
746 case LG2161:
747 ret = lg216x_read_reg(state, 0x0512, &val);
748 break;
749 default:
750 ret = -EINVAL;
751 }
752 if (lg_fail(ret))
753 goto fail;
754
755 switch ((val >> 6) & 0x03) {
756 case 0x00:
757 *mode_a = ATSCMH_SCCC_CODE_HLF;
758 break;
759 case 0x01:
760 *mode_a = ATSCMH_SCCC_CODE_QTR;
761 break;
762 default:
763 *mode_a = ATSCMH_SCCC_CODE_RES;
764 break;
765 }
766
767 switch ((val >> 4) & 0x03) {
768 case 0x00:
769 *mode_b = ATSCMH_SCCC_CODE_HLF;
770 break;
771 case 0x01:
772 *mode_b = ATSCMH_SCCC_CODE_QTR;
773 break;
774 default:
775 *mode_b = ATSCMH_SCCC_CODE_RES;
776 break;
777 }
778
779 switch ((val >> 2) & 0x03) {
780 case 0x00:
781 *mode_c = ATSCMH_SCCC_CODE_HLF;
782 break;
783 case 0x01:
784 *mode_c = ATSCMH_SCCC_CODE_QTR;
785 break;
786 default:
787 *mode_c = ATSCMH_SCCC_CODE_RES;
788 break;
789 }
790
791 switch (val & 0x03) {
792 case 0x00:
793 *mode_d = ATSCMH_SCCC_CODE_HLF;
794 break;
795 case 0x01:
796 *mode_d = ATSCMH_SCCC_CODE_QTR;
797 break;
798 default:
799 *mode_d = ATSCMH_SCCC_CODE_RES;
800 break;
801 }
802fail:
803 return ret;
804}
805
806
807
808#if 0
809static int lg216x_read_fic_err_count(struct lg216x_state *state, u8 *err)
810{
811 u8 fic_err;
812 int ret;
813
814 *err = 0;
815
816 switch (state->cfg->lg_chip) {
817 case LG2160:
818 ret = lg216x_read_reg(state, 0x0012, &fic_err);
819 break;
820 case LG2161:
821 ret = lg216x_read_reg(state, 0x001e, &fic_err);
822 break;
823 }
824 if (lg_fail(ret))
825 goto fail;
826
827 *err = fic_err;
828fail:
829 return ret;
830}
831
832static int lg2160_read_crc_err_count(struct lg216x_state *state, u16 *err)
833{
834 u8 crc_err1, crc_err2;
835 int ret;
836
837 *err = 0;
838
839 ret = lg216x_read_reg(state, 0x0411, &crc_err1);
840 if (lg_fail(ret))
841 goto fail;
842
843 ret = lg216x_read_reg(state, 0x0412, &crc_err2);
844 if (lg_fail(ret))
845 goto fail;
846
847 *err = (u16)(((crc_err2 & 0x0f) << 8) | crc_err1);
848fail:
849 return ret;
850}
851
852static int lg2161_read_crc_err_count(struct lg216x_state *state, u16 *err)
853{
854 u8 crc_err;
855 int ret;
856
857 *err = 0;
858
859 ret = lg216x_read_reg(state, 0x0612, &crc_err);
860 if (lg_fail(ret))
861 goto fail;
862
863 *err = (u16)crc_err;
864fail:
865 return ret;
866}
867
868static int lg216x_read_crc_err_count(struct lg216x_state *state, u16 *err)
869{
870 int ret;
871 switch (state->cfg->lg_chip) {
872 case LG2160:
873 ret = lg2160_read_crc_err_count(state, err);
874 break;
875 case LG2161:
876 ret = lg2161_read_crc_err_count(state, err);
877 break;
878 default:
879 ret = -EINVAL;
880 break;
881 }
882 return ret;
883}
884
885static int lg2160_read_rs_err_count(struct lg216x_state *state, u16 *err)
886{
887 u8 rs_err1, rs_err2;
888 int ret;
889
890 *err = 0;
891
892 ret = lg216x_read_reg(state, 0x0413, &rs_err1);
893 if (lg_fail(ret))
894 goto fail;
895
896 ret = lg216x_read_reg(state, 0x0414, &rs_err2);
897 if (lg_fail(ret))
898 goto fail;
899
900 *err = (u16)(((rs_err2 & 0x0f) << 8) | rs_err1);
901fail:
902 return ret;
903}
904
905static int lg2161_read_rs_err_count(struct lg216x_state *state, u16 *err)
906{
907 u8 rs_err1, rs_err2;
908 int ret;
909
910 *err = 0;
911
912 ret = lg216x_read_reg(state, 0x0613, &rs_err1);
913 if (lg_fail(ret))
914 goto fail;
915
916 ret = lg216x_read_reg(state, 0x0614, &rs_err2);
917 if (lg_fail(ret))
918 goto fail;
919
920 *err = (u16)((rs_err1 << 8) | rs_err2);
921fail:
922 return ret;
923}
924
925static int lg216x_read_rs_err_count(struct lg216x_state *state, u16 *err)
926{
927 int ret;
928 switch (state->cfg->lg_chip) {
929 case LG2160:
930 ret = lg2160_read_rs_err_count(state, err);
931 break;
932 case LG2161:
933 ret = lg2161_read_rs_err_count(state, err);
934 break;
935 default:
936 ret = -EINVAL;
937 break;
938 }
939 return ret;
940}
941#endif
942
943
944
945static int lg216x_get_frontend(struct dvb_frontend *fe,
946 struct dtv_frontend_properties *c)
947{
948 struct lg216x_state *state = fe->demodulator_priv;
949 int ret;
950
951 lg_dbg("\n");
952
953 c->modulation = VSB_8;
954 c->frequency = state->current_frequency;
955 c->delivery_system = SYS_ATSCMH;
956
957 ret = lg216x_get_fic_version(state,
958 &c->atscmh_fic_ver);
959 if (lg_fail(ret))
960 goto fail;
961 if (state->fic_ver != c->atscmh_fic_ver) {
962 state->fic_ver = c->atscmh_fic_ver;
963
964#if 0
965 ret = lg2160_get_parade_id(state,
966 &c->atscmh_parade_id);
967 if (lg_fail(ret))
968 goto fail;
969
970 c->atscmh_parade_id = state->parade_id;
971#endif
972 ret = lg216x_get_nog(state,
973 &c->atscmh_nog);
974 if (lg_fail(ret))
975 goto fail;
976 ret = lg216x_get_tnog(state,
977 &c->atscmh_tnog);
978 if (lg_fail(ret))
979 goto fail;
980 ret = lg216x_get_sgn(state,
981 &c->atscmh_sgn);
982 if (lg_fail(ret))
983 goto fail;
984 ret = lg216x_get_prc(state,
985 &c->atscmh_prc);
986 if (lg_fail(ret))
987 goto fail;
988
989 ret = lg216x_get_rs_frame_mode(state,
990 (enum atscmh_rs_frame_mode *)
991 &c->atscmh_rs_frame_mode);
992 if (lg_fail(ret))
993 goto fail;
994 ret = lg216x_get_rs_frame_ensemble(state,
995 (enum atscmh_rs_frame_ensemble *)
996 &c->atscmh_rs_frame_ensemble);
997 if (lg_fail(ret))
998 goto fail;
999 ret = lg216x_get_rs_code_mode(state,
1000 (enum atscmh_rs_code_mode *)
1001 &c->atscmh_rs_code_mode_pri,
1002 (enum atscmh_rs_code_mode *)
1003 &c->atscmh_rs_code_mode_sec);
1004 if (lg_fail(ret))
1005 goto fail;
1006 ret = lg216x_get_sccc_block_mode(state,
1007 (enum atscmh_sccc_block_mode *)
1008 &c->atscmh_sccc_block_mode);
1009 if (lg_fail(ret))
1010 goto fail;
1011 ret = lg216x_get_sccc_code_mode(state,
1012 (enum atscmh_sccc_code_mode *)
1013 &c->atscmh_sccc_code_mode_a,
1014 (enum atscmh_sccc_code_mode *)
1015 &c->atscmh_sccc_code_mode_b,
1016 (enum atscmh_sccc_code_mode *)
1017 &c->atscmh_sccc_code_mode_c,
1018 (enum atscmh_sccc_code_mode *)
1019 &c->atscmh_sccc_code_mode_d);
1020 if (lg_fail(ret))
1021 goto fail;
1022 }
1023#if 0
1024 ret = lg216x_read_fic_err_count(state,
1025 (u8 *)&c->atscmh_fic_err);
1026 if (lg_fail(ret))
1027 goto fail;
1028 ret = lg216x_read_crc_err_count(state,
1029 &c->atscmh_crc_err);
1030 if (lg_fail(ret))
1031 goto fail;
1032 ret = lg216x_read_rs_err_count(state,
1033 &c->atscmh_rs_err);
1034 if (lg_fail(ret))
1035 goto fail;
1036
1037 switch (state->cfg->lg_chip) {
1038 case LG2160:
1039 if (((c->atscmh_rs_err >= 240) &&
1040 (c->atscmh_crc_err >= 240)) &&
1041 ((jiffies_to_msecs(jiffies) - state->last_reset) > 6000))
1042 ret = lg216x_soft_reset(state);
1043 break;
1044 case LG2161:
1045
1046 ret = 0;
1047 break;
1048 }
1049 lg_fail(ret);
1050#endif
1051fail:
1052 return ret;
1053}
1054
1055static int lg216x_get_property(struct dvb_frontend *fe,
1056 struct dtv_property *tvp)
1057{
1058 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1059
1060 return (DTV_ATSCMH_FIC_VER == tvp->cmd) ?
1061 lg216x_get_frontend(fe, c) : 0;
1062}
1063
1064
1065static int lg2160_set_frontend(struct dvb_frontend *fe)
1066{
1067 struct lg216x_state *state = fe->demodulator_priv;
1068 struct dtv_frontend_properties *c = &fe->dtv_property_cache;
1069 int ret;
1070
1071 lg_dbg("(%d)\n", fe->dtv_property_cache.frequency);
1072
1073 if (fe->ops.tuner_ops.set_params) {
1074 ret = fe->ops.tuner_ops.set_params(fe);
1075 if (fe->ops.i2c_gate_ctrl)
1076 fe->ops.i2c_gate_ctrl(fe, 0);
1077 if (lg_fail(ret))
1078 goto fail;
1079 state->current_frequency = fe->dtv_property_cache.frequency;
1080 }
1081
1082 ret = lg2160_agc_fix(state, 0, 0);
1083 if (lg_fail(ret))
1084 goto fail;
1085 ret = lg2160_agc_polarity(state, 0, 0);
1086 if (lg_fail(ret))
1087 goto fail;
1088 ret = lg2160_tuner_pwr_save_polarity(state, 1);
1089 if (lg_fail(ret))
1090 goto fail;
1091 ret = lg216x_set_if(state);
1092 if (lg_fail(ret))
1093 goto fail;
1094 ret = lg2160_spectrum_polarity(state, state->cfg->spectral_inversion);
1095 if (lg_fail(ret))
1096 goto fail;
1097
1098
1099 ret = lg216x_soft_reset(state);
1100 if (lg_fail(ret))
1101 goto fail;
1102
1103 ret = lg2160_tuner_pwr_save(state, 0);
1104 if (lg_fail(ret))
1105 goto fail;
1106
1107 switch (state->cfg->lg_chip) {
1108 case LG2160:
1109 ret = lg2160_set_spi_clock(state);
1110 if (lg_fail(ret))
1111 goto fail;
1112 break;
1113 case LG2161:
1114 ret = lg2161_set_output_interface(state);
1115 if (lg_fail(ret))
1116 goto fail;
1117 break;
1118 }
1119
1120 ret = lg216x_set_parade(state, fe->dtv_property_cache.atscmh_parade_id);
1121 if (lg_fail(ret))
1122 goto fail;
1123
1124 ret = lg216x_set_ensemble(state,
1125 fe->dtv_property_cache.atscmh_rs_frame_ensemble);
1126 if (lg_fail(ret))
1127 goto fail;
1128
1129 ret = lg216x_initialize(state);
1130 if (lg_fail(ret))
1131 goto fail;
1132
1133 ret = lg216x_enable_fic(state, 1);
1134 lg_fail(ret);
1135
1136 lg216x_get_frontend(fe, c);
1137fail:
1138 return ret;
1139}
1140
1141
1142
1143static int lg2160_read_lock_status(struct lg216x_state *state,
1144 int *acq_lock, int *sync_lock)
1145{
1146 u8 val;
1147 int ret;
1148
1149 *acq_lock = 0;
1150 *sync_lock = 0;
1151
1152 ret = lg216x_read_reg(state, 0x011b, &val);
1153 if (lg_fail(ret))
1154 goto fail;
1155
1156 *sync_lock = (val & 0x20) ? 0 : 1;
1157 *acq_lock = (val & 0x40) ? 0 : 1;
1158fail:
1159 return ret;
1160}
1161
1162#ifdef USE_LG2161_LOCK_BITS
1163static int lg2161_read_lock_status(struct lg216x_state *state,
1164 int *acq_lock, int *sync_lock)
1165{
1166 u8 val;
1167 int ret;
1168
1169 *acq_lock = 0;
1170 *sync_lock = 0;
1171
1172 ret = lg216x_read_reg(state, 0x0304, &val);
1173 if (lg_fail(ret))
1174 goto fail;
1175
1176 *sync_lock = (val & 0x80) ? 0 : 1;
1177
1178 ret = lg216x_read_reg(state, 0x011b, &val);
1179 if (lg_fail(ret))
1180 goto fail;
1181
1182 *acq_lock = (val & 0x40) ? 0 : 1;
1183fail:
1184 return ret;
1185}
1186#endif
1187
1188static int lg216x_read_lock_status(struct lg216x_state *state,
1189 int *acq_lock, int *sync_lock)
1190{
1191#ifdef USE_LG2161_LOCK_BITS
1192 int ret;
1193 switch (state->cfg->lg_chip) {
1194 case LG2160:
1195 ret = lg2160_read_lock_status(state, acq_lock, sync_lock);
1196 break;
1197 case LG2161:
1198 ret = lg2161_read_lock_status(state, acq_lock, sync_lock);
1199 break;
1200 default:
1201 ret = -EINVAL;
1202 break;
1203 }
1204 return ret;
1205#else
1206 return lg2160_read_lock_status(state, acq_lock, sync_lock);
1207#endif
1208}
1209
1210static int lg216x_read_status(struct dvb_frontend *fe, enum fe_status *status)
1211{
1212 struct lg216x_state *state = fe->demodulator_priv;
1213 int ret, acq_lock, sync_lock;
1214
1215 *status = 0;
1216
1217 ret = lg216x_read_lock_status(state, &acq_lock, &sync_lock);
1218 if (lg_fail(ret))
1219 goto fail;
1220
1221 lg_dbg("%s%s\n",
1222 acq_lock ? "SIGNALEXIST " : "",
1223 sync_lock ? "SYNCLOCK" : "");
1224
1225 if (acq_lock)
1226 *status |= FE_HAS_SIGNAL;
1227 if (sync_lock)
1228 *status |= FE_HAS_SYNC;
1229
1230 if (*status)
1231 *status |= FE_HAS_CARRIER | FE_HAS_VITERBI | FE_HAS_LOCK;
1232
1233fail:
1234 return ret;
1235}
1236
1237
1238
1239static int lg2160_read_snr(struct dvb_frontend *fe, u16 *snr)
1240{
1241 struct lg216x_state *state = fe->demodulator_priv;
1242 u8 snr1, snr2;
1243 int ret;
1244
1245 *snr = 0;
1246
1247 ret = lg216x_read_reg(state, 0x0202, &snr1);
1248 if (lg_fail(ret))
1249 goto fail;
1250
1251 ret = lg216x_read_reg(state, 0x0203, &snr2);
1252 if (lg_fail(ret))
1253 goto fail;
1254
1255 if ((snr1 == 0xba) || (snr2 == 0xdf))
1256 *snr = 0;
1257 else
1258#if 1
1259 *snr = ((snr1 >> 4) * 100) + ((snr1 & 0x0f) * 10) + (snr2 >> 4);
1260#else
1261 *snr = (snr2 | (snr1 << 8));
1262#endif
1263fail:
1264 return ret;
1265}
1266
1267static int lg2161_read_snr(struct dvb_frontend *fe, u16 *snr)
1268{
1269 struct lg216x_state *state = fe->demodulator_priv;
1270 u8 snr1, snr2;
1271 int ret;
1272
1273 *snr = 0;
1274
1275 ret = lg216x_read_reg(state, 0x0302, &snr1);
1276 if (lg_fail(ret))
1277 goto fail;
1278
1279 ret = lg216x_read_reg(state, 0x0303, &snr2);
1280 if (lg_fail(ret))
1281 goto fail;
1282
1283 if ((snr1 == 0xba) || (snr2 == 0xfd))
1284 *snr = 0;
1285 else
1286
1287 *snr = ((snr1 >> 4) * 100) + ((snr1 & 0x0f) * 10) + (snr2 & 0x0f);
1288fail:
1289 return ret;
1290}
1291
1292static int lg216x_read_signal_strength(struct dvb_frontend *fe,
1293 u16 *strength)
1294{
1295#if 0
1296
1297
1298
1299
1300
1301
1302
1303 struct lg216x_state *state = fe->demodulator_priv;
1304 u16 snr;
1305 int ret;
1306#endif
1307 *strength = 0;
1308#if 0
1309 ret = fe->ops.read_snr(fe, &snr);
1310 if (lg_fail(ret))
1311 goto fail;
1312
1313
1314 if (state->snr >= 8960 * 0x10000)
1315 *strength = 0xffff;
1316 else
1317 *strength = state->snr / 8960;
1318fail:
1319 return ret;
1320#else
1321 return 0;
1322#endif
1323}
1324
1325
1326
1327static int lg216x_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
1328{
1329#if 0
1330 struct lg216x_state *state = fe->demodulator_priv;
1331 int ret;
1332
1333 ret = lg216x_read_rs_err_count(state,
1334 &fe->dtv_property_cache.atscmh_rs_err);
1335 if (lg_fail(ret))
1336 goto fail;
1337
1338 *ucblocks = fe->dtv_property_cache.atscmh_rs_err;
1339fail:
1340#else
1341 *ucblocks = 0;
1342#endif
1343 return 0;
1344}
1345
1346static int lg216x_get_tune_settings(struct dvb_frontend *fe,
1347 struct dvb_frontend_tune_settings
1348 *fe_tune_settings)
1349{
1350 fe_tune_settings->min_delay_ms = 500;
1351 lg_dbg("\n");
1352 return 0;
1353}
1354
1355static void lg216x_release(struct dvb_frontend *fe)
1356{
1357 struct lg216x_state *state = fe->demodulator_priv;
1358 lg_dbg("\n");
1359 kfree(state);
1360}
1361
1362static struct dvb_frontend_ops lg2160_ops = {
1363 .delsys = { SYS_ATSCMH },
1364 .info = {
1365 .name = "LG Electronics LG2160 ATSC/MH Frontend",
1366 .frequency_min = 54000000,
1367 .frequency_max = 858000000,
1368 .frequency_stepsize = 62500,
1369 },
1370 .i2c_gate_ctrl = lg216x_i2c_gate_ctrl,
1371#if 0
1372 .init = lg216x_init,
1373 .sleep = lg216x_sleep,
1374#endif
1375 .get_property = lg216x_get_property,
1376
1377 .set_frontend = lg2160_set_frontend,
1378 .get_frontend = lg216x_get_frontend,
1379 .get_tune_settings = lg216x_get_tune_settings,
1380 .read_status = lg216x_read_status,
1381#if 0
1382 .read_ber = lg216x_read_ber,
1383#endif
1384 .read_signal_strength = lg216x_read_signal_strength,
1385 .read_snr = lg2160_read_snr,
1386 .read_ucblocks = lg216x_read_ucblocks,
1387 .release = lg216x_release,
1388};
1389
1390static struct dvb_frontend_ops lg2161_ops = {
1391 .delsys = { SYS_ATSCMH },
1392 .info = {
1393 .name = "LG Electronics LG2161 ATSC/MH Frontend",
1394 .frequency_min = 54000000,
1395 .frequency_max = 858000000,
1396 .frequency_stepsize = 62500,
1397 },
1398 .i2c_gate_ctrl = lg216x_i2c_gate_ctrl,
1399#if 0
1400 .init = lg216x_init,
1401 .sleep = lg216x_sleep,
1402#endif
1403 .get_property = lg216x_get_property,
1404
1405 .set_frontend = lg2160_set_frontend,
1406 .get_frontend = lg216x_get_frontend,
1407 .get_tune_settings = lg216x_get_tune_settings,
1408 .read_status = lg216x_read_status,
1409#if 0
1410 .read_ber = lg216x_read_ber,
1411#endif
1412 .read_signal_strength = lg216x_read_signal_strength,
1413 .read_snr = lg2161_read_snr,
1414 .read_ucblocks = lg216x_read_ucblocks,
1415 .release = lg216x_release,
1416};
1417
1418struct dvb_frontend *lg2160_attach(const struct lg2160_config *config,
1419 struct i2c_adapter *i2c_adap)
1420{
1421 struct lg216x_state *state = NULL;
1422
1423 lg_dbg("(%d-%04x)\n",
1424 i2c_adap ? i2c_adapter_id(i2c_adap) : 0,
1425 config ? config->i2c_addr : 0);
1426
1427 state = kzalloc(sizeof(struct lg216x_state), GFP_KERNEL);
1428 if (!state)
1429 return NULL;
1430
1431 state->cfg = config;
1432 state->i2c_adap = i2c_adap;
1433 state->fic_ver = 0xff;
1434 state->parade_id = 0xff;
1435
1436 switch (config->lg_chip) {
1437 default:
1438 lg_warn("invalid chip requested, defaulting to LG2160");
1439
1440 case LG2160:
1441 memcpy(&state->frontend.ops, &lg2160_ops,
1442 sizeof(struct dvb_frontend_ops));
1443 break;
1444 case LG2161:
1445 memcpy(&state->frontend.ops, &lg2161_ops,
1446 sizeof(struct dvb_frontend_ops));
1447 break;
1448 }
1449
1450 state->frontend.demodulator_priv = state;
1451 state->current_frequency = -1;
1452
1453 state->frontend.dtv_property_cache.atscmh_parade_id = 1;
1454
1455 return &state->frontend;
1456}
1457EXPORT_SYMBOL(lg2160_attach);
1458
1459MODULE_DESCRIPTION("LG Electronics LG216x ATSC/MH Demodulator Driver");
1460MODULE_AUTHOR("Michael Krufky <mkrufky@linuxtv.org>");
1461MODULE_LICENSE("GPL");
1462MODULE_VERSION("0.3");
1463
