2 * Support for LGDT3306A - 8VSB/QAM-B
4 * Copyright (C) 2013 Fred Richter <frichter@hauppauge.com>
5 * - driver structure based on lgdt3305.[ch] by Michael Krufky
6 * - code based on LG3306_V0.35 API by LG Electronics Inc.
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
21 #include <asm/div64.h>
22 #include <linux/dvb/frontend.h>
24 #include "lgdt3306a.h"
25 #include <linux/i2c-mux.h>
29 module_param(debug, int, 0644);
30 MODULE_PARM_DESC(debug, "set debug level (info=1, reg=2 (or-able))");
34 #define DBG_DUMP 4 /* FGR - comment out to remove dump code */
36 #define lg_debug(fmt, arg...) \
37 printk(KERN_DEBUG pr_fmt(fmt), ## arg)
39 #define dbg_info(fmt, arg...) \
41 if (debug & DBG_INFO) \
42 lg_debug(fmt, ## arg); \
45 #define dbg_reg(fmt, arg...) \
47 if (debug & DBG_REG) \
48 lg_debug(fmt, ## arg); \
51 #define lg_chkerr(ret) \
56 pr_err("error %d on line %d\n", ret, __LINE__); \
60 struct lgdt3306a_state {
61 struct i2c_adapter *i2c_adap;
62 const struct lgdt3306a_config *cfg;
64 struct dvb_frontend frontend;
66 enum fe_modulation current_modulation;
67 u32 current_frequency;
70 struct i2c_mux_core *muxc;
74 * LG3306A Register Usage
75 * (LG does not really name the registers, so this code does not either)
77 * 0000 -> 00FF Common control and status
78 * 1000 -> 10FF Synchronizer control and status
79 * 1F00 -> 1FFF Smart Antenna control and status
80 * 2100 -> 21FF VSB Equalizer control and status
81 * 2800 -> 28FF QAM Equalizer control and status
82 * 3000 -> 30FF FEC control and status
85 enum lgdt3306a_lock_status {
88 LG3306_UNKNOWN_LOCK = 0xff
91 enum lgdt3306a_neverlock_status {
92 LG3306_NL_INIT = 0x00,
93 LG3306_NL_PROCESS = 0x01,
94 LG3306_NL_LOCK = 0x02,
95 LG3306_NL_FAIL = 0x03,
96 LG3306_NL_UNKNOWN = 0xff
99 enum lgdt3306a_modulation {
102 LG3306_QAM256 = 0x02,
103 LG3306_UNKNOWN_MODE = 0xff
106 enum lgdt3306a_lock_check {
115 static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state *state);
116 static void lgdt3306a_DumpRegs(struct lgdt3306a_state *state);
120 static int lgdt3306a_write_reg(struct lgdt3306a_state *state, u16 reg, u8 val)
123 u8 buf[] = { reg >> 8, reg & 0xff, val };
124 struct i2c_msg msg = {
125 .addr = state->cfg->i2c_addr, .flags = 0,
126 .buf = buf, .len = 3,
129 dbg_reg("reg: 0x%04x, val: 0x%02x\n", reg, val);
131 ret = i2c_transfer(state->i2c_adap, &msg, 1);
134 pr_err("error (addr %02x %02x <- %02x, err = %i)\n",
135 msg.buf[0], msg.buf[1], msg.buf[2], ret);
144 static int lgdt3306a_read_reg(struct lgdt3306a_state *state, u16 reg, u8 *val)
147 u8 reg_buf[] = { reg >> 8, reg & 0xff };
148 struct i2c_msg msg[] = {
149 { .addr = state->cfg->i2c_addr,
150 .flags = 0, .buf = reg_buf, .len = 2 },
151 { .addr = state->cfg->i2c_addr,
152 .flags = I2C_M_RD, .buf = val, .len = 1 },
155 ret = i2c_transfer(state->i2c_adap, msg, 2);
158 pr_err("error (addr %02x reg %04x error (ret == %i)\n",
159 state->cfg->i2c_addr, reg, ret);
165 dbg_reg("reg: 0x%04x, val: 0x%02x\n", reg, *val);
170 #define read_reg(state, reg) \
173 int ret = lgdt3306a_read_reg(state, reg, &__val); \
174 if (lg_chkerr(ret)) \
179 static int lgdt3306a_set_reg_bit(struct lgdt3306a_state *state,
180 u16 reg, int bit, int onoff)
185 dbg_reg("reg: 0x%04x, bit: %d, level: %d\n", reg, bit, onoff);
187 ret = lgdt3306a_read_reg(state, reg, &val);
192 val |= (onoff & 1) << bit;
194 ret = lgdt3306a_write_reg(state, reg, val);
200 /* ------------------------------------------------------------------------ */
202 static int lgdt3306a_soft_reset(struct lgdt3306a_state *state)
208 ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 0);
213 ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 1);
220 static int lgdt3306a_mpeg_mode(struct lgdt3306a_state *state,
221 enum lgdt3306a_mpeg_mode mode)
226 dbg_info("(%d)\n", mode);
227 /* transport packet format - TPSENB=0x80 */
228 ret = lgdt3306a_set_reg_bit(state, 0x0071, 7,
229 mode == LGDT3306A_MPEG_PARALLEL ? 1 : 0);
234 * start of packet signal duration
235 * TPSSOPBITEN=0x40; 0=byte duration, 1=bit duration
237 ret = lgdt3306a_set_reg_bit(state, 0x0071, 6, 0);
241 ret = lgdt3306a_read_reg(state, 0x0070, &val);
245 val |= 0x10; /* TPCLKSUPB=0x10 */
247 if (mode == LGDT3306A_MPEG_PARALLEL)
250 ret = lgdt3306a_write_reg(state, 0x0070, val);
257 static int lgdt3306a_mpeg_mode_polarity(struct lgdt3306a_state *state,
258 enum lgdt3306a_tp_clock_edge edge,
259 enum lgdt3306a_tp_valid_polarity valid)
264 dbg_info("edge=%d, valid=%d\n", edge, valid);
266 ret = lgdt3306a_read_reg(state, 0x0070, &val);
270 val &= ~0x06; /* TPCLKPOL=0x04, TPVALPOL=0x02 */
272 if (edge == LGDT3306A_TPCLK_RISING_EDGE)
274 if (valid == LGDT3306A_TP_VALID_HIGH)
277 ret = lgdt3306a_write_reg(state, 0x0070, val);
284 static int lgdt3306a_mpeg_tristate(struct lgdt3306a_state *state,
290 dbg_info("(%d)\n", mode);
293 ret = lgdt3306a_read_reg(state, 0x0070, &val);
297 * Tristate bus; TPOUTEN=0x80, TPCLKOUTEN=0x20,
301 ret = lgdt3306a_write_reg(state, 0x0070, val);
305 /* AGCIFOUTENB=0x40; 1=Disable IFAGC pin */
306 ret = lgdt3306a_set_reg_bit(state, 0x0003, 6, 1);
311 /* enable IFAGC pin */
312 ret = lgdt3306a_set_reg_bit(state, 0x0003, 6, 0);
316 ret = lgdt3306a_read_reg(state, 0x0070, &val);
320 val |= 0xa8; /* enable bus */
321 ret = lgdt3306a_write_reg(state, 0x0070, val);
330 static int lgdt3306a_ts_bus_ctrl(struct dvb_frontend *fe, int acquire)
332 struct lgdt3306a_state *state = fe->demodulator_priv;
334 dbg_info("acquire=%d\n", acquire);
336 return lgdt3306a_mpeg_tristate(state, acquire ? 0 : 1);
340 static int lgdt3306a_power(struct lgdt3306a_state *state,
345 dbg_info("(%d)\n", mode);
349 ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 0);
354 ret = lgdt3306a_set_reg_bit(state, 0x0000, 0, 0);
360 ret = lgdt3306a_set_reg_bit(state, 0x0000, 7, 1);
365 ret = lgdt3306a_set_reg_bit(state, 0x0000, 0, 1);
371 lgdt3306a_DumpAllRegs(state);
378 static int lgdt3306a_set_vsb(struct lgdt3306a_state *state)
385 /* 0. Spectrum inversion detection manual; spectrum inverted */
386 ret = lgdt3306a_read_reg(state, 0x0002, &val);
387 val &= 0xf7; /* SPECINVAUTO Off */
388 val |= 0x04; /* SPECINV On */
389 ret = lgdt3306a_write_reg(state, 0x0002, val);
393 /* 1. Selection of standard mode(0x08=QAM, 0x80=VSB) */
394 ret = lgdt3306a_write_reg(state, 0x0008, 0x80);
398 /* 2. Bandwidth mode for VSB(6MHz) */
399 ret = lgdt3306a_read_reg(state, 0x0009, &val);
401 val |= 0x0c; /* STDOPDETTMODE[2:0]=3 */
402 ret = lgdt3306a_write_reg(state, 0x0009, val);
406 /* 3. QAM mode detection mode(None) */
407 ret = lgdt3306a_read_reg(state, 0x0009, &val);
408 val &= 0xfc; /* STDOPDETCMODE[1:0]=0 */
409 ret = lgdt3306a_write_reg(state, 0x0009, val);
413 /* 4. ADC sampling frequency rate(2x sampling) */
414 ret = lgdt3306a_read_reg(state, 0x000d, &val);
415 val &= 0xbf; /* SAMPLING4XFEN=0 */
416 ret = lgdt3306a_write_reg(state, 0x000d, val);
421 /* FGR - disable any AICC filtering, testing only */
423 ret = lgdt3306a_write_reg(state, 0x0024, 0x00);
427 /* AICCFIXFREQ0 NT N-1(Video rejection) */
428 ret = lgdt3306a_write_reg(state, 0x002e, 0x00);
429 ret = lgdt3306a_write_reg(state, 0x002f, 0x00);
430 ret = lgdt3306a_write_reg(state, 0x0030, 0x00);
432 /* AICCFIXFREQ1 NT N-1(Audio rejection) */
433 ret = lgdt3306a_write_reg(state, 0x002b, 0x00);
434 ret = lgdt3306a_write_reg(state, 0x002c, 0x00);
435 ret = lgdt3306a_write_reg(state, 0x002d, 0x00);
437 /* AICCFIXFREQ2 NT Co-Channel(Video rejection) */
438 ret = lgdt3306a_write_reg(state, 0x0028, 0x00);
439 ret = lgdt3306a_write_reg(state, 0x0029, 0x00);
440 ret = lgdt3306a_write_reg(state, 0x002a, 0x00);
442 /* AICCFIXFREQ3 NT Co-Channel(Audio rejection) */
443 ret = lgdt3306a_write_reg(state, 0x0025, 0x00);
444 ret = lgdt3306a_write_reg(state, 0x0026, 0x00);
445 ret = lgdt3306a_write_reg(state, 0x0027, 0x00);
448 /* FGR - this works well for HVR-1955,1975 */
450 /* 5. AICCOPMODE NT N-1 Adj. */
451 ret = lgdt3306a_write_reg(state, 0x0024, 0x5A);
455 /* AICCFIXFREQ0 NT N-1(Video rejection) */
456 ret = lgdt3306a_write_reg(state, 0x002e, 0x5A);
457 ret = lgdt3306a_write_reg(state, 0x002f, 0x00);
458 ret = lgdt3306a_write_reg(state, 0x0030, 0x00);
460 /* AICCFIXFREQ1 NT N-1(Audio rejection) */
461 ret = lgdt3306a_write_reg(state, 0x002b, 0x36);
462 ret = lgdt3306a_write_reg(state, 0x002c, 0x00);
463 ret = lgdt3306a_write_reg(state, 0x002d, 0x00);
465 /* AICCFIXFREQ2 NT Co-Channel(Video rejection) */
466 ret = lgdt3306a_write_reg(state, 0x0028, 0x2A);
467 ret = lgdt3306a_write_reg(state, 0x0029, 0x00);
468 ret = lgdt3306a_write_reg(state, 0x002a, 0x00);
470 /* AICCFIXFREQ3 NT Co-Channel(Audio rejection) */
471 ret = lgdt3306a_write_reg(state, 0x0025, 0x06);
472 ret = lgdt3306a_write_reg(state, 0x0026, 0x00);
473 ret = lgdt3306a_write_reg(state, 0x0027, 0x00);
476 ret = lgdt3306a_read_reg(state, 0x001e, &val);
479 ret = lgdt3306a_write_reg(state, 0x001e, val);
481 ret = lgdt3306a_write_reg(state, 0x0022, 0x08);
483 ret = lgdt3306a_write_reg(state, 0x0023, 0xFF);
485 ret = lgdt3306a_read_reg(state, 0x211f, &val);
487 ret = lgdt3306a_write_reg(state, 0x211f, val);
489 ret = lgdt3306a_write_reg(state, 0x2173, 0x01);
491 ret = lgdt3306a_read_reg(state, 0x1061, &val);
494 ret = lgdt3306a_write_reg(state, 0x1061, val);
496 ret = lgdt3306a_read_reg(state, 0x103d, &val);
498 ret = lgdt3306a_write_reg(state, 0x103d, val);
500 ret = lgdt3306a_write_reg(state, 0x2122, 0x40);
502 ret = lgdt3306a_read_reg(state, 0x2141, &val);
504 ret = lgdt3306a_write_reg(state, 0x2141, val);
506 ret = lgdt3306a_read_reg(state, 0x2135, &val);
509 ret = lgdt3306a_write_reg(state, 0x2135, val);
511 ret = lgdt3306a_read_reg(state, 0x0003, &val);
513 ret = lgdt3306a_write_reg(state, 0x0003, val);
515 ret = lgdt3306a_read_reg(state, 0x001c, &val);
517 ret = lgdt3306a_write_reg(state, 0x001c, val);
519 /* 6. EQ step size */
520 ret = lgdt3306a_read_reg(state, 0x2179, &val);
522 ret = lgdt3306a_write_reg(state, 0x2179, val);
524 ret = lgdt3306a_read_reg(state, 0x217a, &val);
526 ret = lgdt3306a_write_reg(state, 0x217a, val);
529 ret = lgdt3306a_soft_reset(state);
533 dbg_info("complete\n");
538 static int lgdt3306a_set_qam(struct lgdt3306a_state *state, int modulation)
543 dbg_info("modulation=%d\n", modulation);
545 /* 1. Selection of standard mode(0x08=QAM, 0x80=VSB) */
546 ret = lgdt3306a_write_reg(state, 0x0008, 0x08);
550 /* 1a. Spectrum inversion detection to Auto */
551 ret = lgdt3306a_read_reg(state, 0x0002, &val);
552 val &= 0xfb; /* SPECINV Off */
553 val |= 0x08; /* SPECINVAUTO On */
554 ret = lgdt3306a_write_reg(state, 0x0002, val);
558 /* 2. Bandwidth mode for QAM */
559 ret = lgdt3306a_read_reg(state, 0x0009, &val);
560 val &= 0xe3; /* STDOPDETTMODE[2:0]=0 VSB Off */
561 ret = lgdt3306a_write_reg(state, 0x0009, val);
565 /* 3. : 64QAM/256QAM detection(manual, auto) */
566 ret = lgdt3306a_read_reg(state, 0x0009, &val);
568 val |= 0x02; /* STDOPDETCMODE[1:0]=1=Manual 2=Auto */
569 ret = lgdt3306a_write_reg(state, 0x0009, val);
573 /* 3a. : 64QAM/256QAM selection for manual */
574 ret = lgdt3306a_read_reg(state, 0x101a, &val);
576 if (modulation == QAM_64)
577 val |= 0x02; /* QMDQMODE[2:0]=2=QAM64 */
579 val |= 0x04; /* QMDQMODE[2:0]=4=QAM256 */
581 ret = lgdt3306a_write_reg(state, 0x101a, val);
585 /* 4. ADC sampling frequency rate(4x sampling) */
586 ret = lgdt3306a_read_reg(state, 0x000d, &val);
588 val |= 0x40; /* SAMPLING4XFEN=1 */
589 ret = lgdt3306a_write_reg(state, 0x000d, val);
593 /* 5. No AICC operation in QAM mode */
594 ret = lgdt3306a_read_reg(state, 0x0024, &val);
596 ret = lgdt3306a_write_reg(state, 0x0024, val);
601 ret = lgdt3306a_soft_reset(state);
605 dbg_info("complete\n");
610 static int lgdt3306a_set_modulation(struct lgdt3306a_state *state,
611 struct dtv_frontend_properties *p)
617 switch (p->modulation) {
619 ret = lgdt3306a_set_vsb(state);
622 ret = lgdt3306a_set_qam(state, QAM_64);
625 ret = lgdt3306a_set_qam(state, QAM_256);
633 state->current_modulation = p->modulation;
639 /* ------------------------------------------------------------------------ */
641 static int lgdt3306a_agc_setup(struct lgdt3306a_state *state,
642 struct dtv_frontend_properties *p)
644 /* TODO: anything we want to do here??? */
647 switch (p->modulation) {
659 /* ------------------------------------------------------------------------ */
661 static int lgdt3306a_set_inversion(struct lgdt3306a_state *state,
666 dbg_info("(%d)\n", inversion);
668 ret = lgdt3306a_set_reg_bit(state, 0x0002, 2, inversion ? 1 : 0);
672 static int lgdt3306a_set_inversion_auto(struct lgdt3306a_state *state,
677 dbg_info("(%d)\n", enabled);
679 /* 0=Manual 1=Auto(QAM only) - SPECINVAUTO=0x04 */
680 ret = lgdt3306a_set_reg_bit(state, 0x0002, 3, enabled);
684 static int lgdt3306a_spectral_inversion(struct lgdt3306a_state *state,
685 struct dtv_frontend_properties *p,
690 dbg_info("(%d)\n", inversion);
693 * FGR - spectral_inversion defaults already set for VSB and QAM;
694 * can enable later if desired
697 ret = lgdt3306a_set_inversion(state, inversion);
699 switch (p->modulation) {
701 /* Manual only for VSB */
702 ret = lgdt3306a_set_inversion_auto(state, 0);
706 /* Auto ok for QAM */
707 ret = lgdt3306a_set_inversion_auto(state, 1);
716 static int lgdt3306a_set_if(struct lgdt3306a_state *state,
717 struct dtv_frontend_properties *p)
723 switch (p->modulation) {
725 if_freq_khz = state->cfg->vsb_if_khz;
729 if_freq_khz = state->cfg->qam_if_khz;
735 switch (if_freq_khz) {
737 pr_warn("IF=%d KHz is not supported, 3250 assumed\n",
740 case 3250: /* 3.25Mhz */
744 case 3500: /* 3.50Mhz */
748 case 4000: /* 4.00Mhz */
752 case 5000: /* 5.00Mhz */
756 case 5380: /* 5.38Mhz */
761 ret = lgdt3306a_write_reg(state, 0x0010, nco1);
764 ret = lgdt3306a_write_reg(state, 0x0011, nco2);
768 dbg_info("if_freq=%d KHz->[%04x]\n", if_freq_khz, nco1<<8 | nco2);
773 /* ------------------------------------------------------------------------ */
775 static int lgdt3306a_i2c_gate_ctrl(struct dvb_frontend *fe, int enable)
777 struct lgdt3306a_state *state = fe->demodulator_priv;
779 if (state->cfg->deny_i2c_rptr) {
780 dbg_info("deny_i2c_rptr=%d\n", state->cfg->deny_i2c_rptr);
783 dbg_info("(%d)\n", enable);
786 return lgdt3306a_set_reg_bit(state, 0x0002, 7, enable ? 0 : 1);
789 static int lgdt3306a_sleep(struct lgdt3306a_state *state)
794 state->current_frequency = -1; /* force re-tune, when we wake */
796 ret = lgdt3306a_mpeg_tristate(state, 1); /* disable data bus */
800 ret = lgdt3306a_power(state, 0); /* power down */
807 static int lgdt3306a_fe_sleep(struct dvb_frontend *fe)
809 struct lgdt3306a_state *state = fe->demodulator_priv;
811 return lgdt3306a_sleep(state);
814 static int lgdt3306a_init(struct dvb_frontend *fe)
816 struct lgdt3306a_state *state = fe->demodulator_priv;
822 /* 1. Normal operation mode */
823 ret = lgdt3306a_set_reg_bit(state, 0x0001, 0, 1); /* SIMFASTENB=0x01 */
827 /* 2. Spectrum inversion auto detection (Not valid for VSB) */
828 ret = lgdt3306a_set_inversion_auto(state, 0);
832 /* 3. Spectrum inversion(According to the tuner configuration) */
833 ret = lgdt3306a_set_inversion(state, 1);
837 /* 4. Peak-to-peak voltage of ADC input signal */
839 /* ADCSEL1V=0x80=1Vpp; 0x00=2Vpp */
840 ret = lgdt3306a_set_reg_bit(state, 0x0004, 7, 1);
844 /* 5. ADC output data capture clock phase */
846 /* 0=same phase as ADC clock */
847 ret = lgdt3306a_set_reg_bit(state, 0x0004, 2, 0);
851 /* 5a. ADC sampling clock source */
853 /* ADCCLKPLLSEL=0x08; 0=use ext clock, not PLL */
854 ret = lgdt3306a_set_reg_bit(state, 0x0004, 3, 0);
858 /* 6. Automatic PLL set */
860 /* PLLSETAUTO=0x40; 0=off */
861 ret = lgdt3306a_set_reg_bit(state, 0x0005, 6, 0);
865 if (state->cfg->xtalMHz == 24) { /* 24MHz */
866 /* 7. Frequency for PLL output(0x2564 for 192MHz for 24MHz) */
867 ret = lgdt3306a_read_reg(state, 0x0005, &val);
872 ret = lgdt3306a_write_reg(state, 0x0005, val);
875 ret = lgdt3306a_write_reg(state, 0x0006, 0x64);
879 /* 8. ADC sampling frequency(0x180000 for 24MHz sampling) */
880 ret = lgdt3306a_read_reg(state, 0x000d, &val);
885 ret = lgdt3306a_write_reg(state, 0x000d, val);
889 } else if (state->cfg->xtalMHz == 25) { /* 25MHz */
890 /* 7. Frequency for PLL output */
891 ret = lgdt3306a_read_reg(state, 0x0005, &val);
896 ret = lgdt3306a_write_reg(state, 0x0005, val);
899 ret = lgdt3306a_write_reg(state, 0x0006, 0x64);
903 /* 8. ADC sampling frequency(0x190000 for 25MHz sampling) */
904 ret = lgdt3306a_read_reg(state, 0x000d, &val);
909 ret = lgdt3306a_write_reg(state, 0x000d, val);
913 pr_err("Bad xtalMHz=%d\n", state->cfg->xtalMHz);
916 ret = lgdt3306a_write_reg(state, 0x000e, 0x00);
917 ret = lgdt3306a_write_reg(state, 0x000f, 0x00);
920 /* 9. Center frequency of input signal of ADC */
921 ret = lgdt3306a_write_reg(state, 0x0010, 0x34); /* 3.25MHz */
922 ret = lgdt3306a_write_reg(state, 0x0011, 0x00);
924 /* 10. Fixed gain error value */
925 ret = lgdt3306a_write_reg(state, 0x0014, 0); /* gain error=0 */
927 /* 10a. VSB TR BW gear shift initial step */
928 ret = lgdt3306a_read_reg(state, 0x103c, &val);
930 val |= 0x20; /* SAMGSAUTOSTL_V[3:0] = 2 */
931 ret = lgdt3306a_write_reg(state, 0x103c, val);
933 /* 10b. Timing offset calibration in low temperature for VSB */
934 ret = lgdt3306a_read_reg(state, 0x103d, &val);
937 ret = lgdt3306a_write_reg(state, 0x103d, val);
939 /* 10c. Timing offset calibration in low temperature for QAM */
940 ret = lgdt3306a_read_reg(state, 0x1036, &val);
943 ret = lgdt3306a_write_reg(state, 0x1036, val);
945 /* 11. Using the imaginary part of CIR in CIR loading */
946 ret = lgdt3306a_read_reg(state, 0x211f, &val);
947 val &= 0xef; /* do not use imaginary of CIR */
948 ret = lgdt3306a_write_reg(state, 0x211f, val);
950 /* 12. Control of no signal detector function */
951 ret = lgdt3306a_read_reg(state, 0x2849, &val);
952 val &= 0xef; /* NOUSENOSIGDET=0, enable no signal detector */
953 ret = lgdt3306a_write_reg(state, 0x2849, val);
955 /* FGR - put demod in some known mode */
956 ret = lgdt3306a_set_vsb(state);
958 /* 13. TP stream format */
959 ret = lgdt3306a_mpeg_mode(state, state->cfg->mpeg_mode);
961 /* 14. disable output buses */
962 ret = lgdt3306a_mpeg_tristate(state, 1);
964 /* 15. Sleep (in reset) */
965 ret = lgdt3306a_sleep(state);
972 static int lgdt3306a_set_parameters(struct dvb_frontend *fe)
974 struct dtv_frontend_properties *p = &fe->dtv_property_cache;
975 struct lgdt3306a_state *state = fe->demodulator_priv;
978 dbg_info("(%d, %d)\n", p->frequency, p->modulation);
980 if (state->current_frequency == p->frequency &&
981 state->current_modulation == p->modulation) {
982 dbg_info(" (already set, skipping ...)\n");
985 state->current_frequency = -1;
986 state->current_modulation = -1;
988 ret = lgdt3306a_power(state, 1); /* power up */
992 if (fe->ops.tuner_ops.set_params) {
993 ret = fe->ops.tuner_ops.set_params(fe);
994 if (fe->ops.i2c_gate_ctrl)
995 fe->ops.i2c_gate_ctrl(fe, 0);
999 state->current_frequency = p->frequency;
1003 ret = lgdt3306a_set_modulation(state, p);
1007 ret = lgdt3306a_agc_setup(state, p);
1011 ret = lgdt3306a_set_if(state, p);
1015 ret = lgdt3306a_spectral_inversion(state, p,
1016 state->cfg->spectral_inversion ? 1 : 0);
1020 ret = lgdt3306a_mpeg_mode(state, state->cfg->mpeg_mode);
1024 ret = lgdt3306a_mpeg_mode_polarity(state,
1025 state->cfg->tpclk_edge,
1026 state->cfg->tpvalid_polarity);
1030 ret = lgdt3306a_mpeg_tristate(state, 0); /* enable data bus */
1034 ret = lgdt3306a_soft_reset(state);
1039 lgdt3306a_DumpAllRegs(state);
1041 state->current_frequency = p->frequency;
1046 static int lgdt3306a_get_frontend(struct dvb_frontend *fe,
1047 struct dtv_frontend_properties *p)
1049 struct lgdt3306a_state *state = fe->demodulator_priv;
1051 dbg_info("(%u, %d)\n",
1052 state->current_frequency, state->current_modulation);
1054 p->modulation = state->current_modulation;
1055 p->frequency = state->current_frequency;
1059 static enum dvbfe_algo lgdt3306a_get_frontend_algo(struct dvb_frontend *fe)
1062 return DVBFE_ALGO_CUSTOM;
1064 return DVBFE_ALGO_HW;
1068 /* ------------------------------------------------------------------------ */
1069 static int lgdt3306a_monitor_vsb(struct lgdt3306a_state *state)
1073 u8 snrRef, maxPowerMan, nCombDet;
1076 ret = lgdt3306a_read_reg(state, 0x21a1, &val);
1079 snrRef = val & 0x3f;
1081 ret = lgdt3306a_read_reg(state, 0x2185, &maxPowerMan);
1085 ret = lgdt3306a_read_reg(state, 0x2191, &val);
1088 nCombDet = (val & 0x80) >> 7;
1090 ret = lgdt3306a_read_reg(state, 0x2180, &val);
1093 fbDlyCir = (val & 0x03) << 8;
1095 ret = lgdt3306a_read_reg(state, 0x2181, &val);
1100 dbg_info("snrRef=%d maxPowerMan=0x%x nCombDet=%d fbDlyCir=0x%x\n",
1101 snrRef, maxPowerMan, nCombDet, fbDlyCir);
1103 /* Carrier offset sub loop bandwidth */
1104 ret = lgdt3306a_read_reg(state, 0x1061, &val);
1108 if ((snrRef > 18) && (maxPowerMan > 0x68)
1109 && (nCombDet == 0x01)
1110 && ((fbDlyCir == 0x03FF) || (fbDlyCir < 0x6C))) {
1111 /* SNR is over 18dB and no ghosting */
1112 val |= 0x00; /* final bandwidth = 0 */
1114 val |= 0x04; /* final bandwidth = 4 */
1116 ret = lgdt3306a_write_reg(state, 0x1061, val);
1120 /* Adjust Notch Filter */
1121 ret = lgdt3306a_read_reg(state, 0x0024, &val);
1125 if (nCombDet == 0) { /* Turn on the Notch Filter */
1128 ret = lgdt3306a_write_reg(state, 0x0024, val);
1132 /* VSB Timing Recovery output normalization */
1133 ret = lgdt3306a_read_reg(state, 0x103d, &val);
1138 ret = lgdt3306a_write_reg(state, 0x103d, val);
1143 static enum lgdt3306a_modulation
1144 lgdt3306a_check_oper_mode(struct lgdt3306a_state *state)
1149 ret = lgdt3306a_read_reg(state, 0x0081, &val);
1158 ret = lgdt3306a_read_reg(state, 0x00a6, &val);
1163 dbg_info("QAM256\n");
1164 return LG3306_QAM256;
1166 dbg_info("QAM64\n");
1167 return LG3306_QAM64;
1170 pr_warn("UNKNOWN\n");
1171 return LG3306_UNKNOWN_MODE;
1174 static enum lgdt3306a_lock_status
1175 lgdt3306a_check_lock_status(struct lgdt3306a_state *state,
1176 enum lgdt3306a_lock_check whatLock)
1180 enum lgdt3306a_modulation modeOper;
1181 enum lgdt3306a_lock_status lockStatus;
1183 modeOper = LG3306_UNKNOWN_MODE;
1186 case LG3306_SYNC_LOCK:
1188 ret = lgdt3306a_read_reg(state, 0x00a6, &val);
1192 if ((val & 0x80) == 0x80)
1193 lockStatus = LG3306_LOCK;
1195 lockStatus = LG3306_UNLOCK;
1197 dbg_info("SYNC_LOCK=%x\n", lockStatus);
1200 case LG3306_AGC_LOCK:
1202 ret = lgdt3306a_read_reg(state, 0x0080, &val);
1206 if ((val & 0x40) == 0x40)
1207 lockStatus = LG3306_LOCK;
1209 lockStatus = LG3306_UNLOCK;
1211 dbg_info("AGC_LOCK=%x\n", lockStatus);
1214 case LG3306_TR_LOCK:
1216 modeOper = lgdt3306a_check_oper_mode(state);
1217 if ((modeOper == LG3306_QAM64) || (modeOper == LG3306_QAM256)) {
1218 ret = lgdt3306a_read_reg(state, 0x1094, &val);
1222 if ((val & 0x80) == 0x80)
1223 lockStatus = LG3306_LOCK;
1225 lockStatus = LG3306_UNLOCK;
1227 lockStatus = LG3306_UNKNOWN_LOCK;
1229 dbg_info("TR_LOCK=%x\n", lockStatus);
1232 case LG3306_FEC_LOCK:
1234 modeOper = lgdt3306a_check_oper_mode(state);
1235 if ((modeOper == LG3306_QAM64) || (modeOper == LG3306_QAM256)) {
1236 ret = lgdt3306a_read_reg(state, 0x0080, &val);
1240 if ((val & 0x10) == 0x10)
1241 lockStatus = LG3306_LOCK;
1243 lockStatus = LG3306_UNLOCK;
1245 lockStatus = LG3306_UNKNOWN_LOCK;
1247 dbg_info("FEC_LOCK=%x\n", lockStatus);
1252 lockStatus = LG3306_UNKNOWN_LOCK;
1253 pr_warn("UNKNOWN whatLock=%d\n", whatLock);
1260 static enum lgdt3306a_neverlock_status
1261 lgdt3306a_check_neverlock_status(struct lgdt3306a_state *state)
1265 enum lgdt3306a_neverlock_status lockStatus;
1267 ret = lgdt3306a_read_reg(state, 0x0080, &val);
1270 lockStatus = (enum lgdt3306a_neverlock_status)(val & 0x03);
1272 dbg_info("NeverLock=%d", lockStatus);
1277 static int lgdt3306a_pre_monitoring(struct lgdt3306a_state *state)
1281 u8 currChDiffACQ, snrRef, mainStrong, aiccrejStatus;
1283 /* Channel variation */
1284 ret = lgdt3306a_read_reg(state, 0x21bc, &currChDiffACQ);
1288 /* SNR of Frame sync */
1289 ret = lgdt3306a_read_reg(state, 0x21a1, &val);
1292 snrRef = val & 0x3f;
1294 /* Strong Main CIR */
1295 ret = lgdt3306a_read_reg(state, 0x2199, &val);
1298 mainStrong = (val & 0x40) >> 6;
1300 ret = lgdt3306a_read_reg(state, 0x0090, &val);
1303 aiccrejStatus = (val & 0xf0) >> 4;
1305 dbg_info("snrRef=%d mainStrong=%d aiccrejStatus=%d currChDiffACQ=0x%x\n",
1306 snrRef, mainStrong, aiccrejStatus, currChDiffACQ);
1309 /* Dynamic ghost exists */
1310 if ((mainStrong == 0) && (currChDiffACQ > 0x70))
1312 if (mainStrong == 0) {
1313 ret = lgdt3306a_read_reg(state, 0x2135, &val);
1318 ret = lgdt3306a_write_reg(state, 0x2135, val);
1322 ret = lgdt3306a_read_reg(state, 0x2141, &val);
1327 ret = lgdt3306a_write_reg(state, 0x2141, val);
1331 ret = lgdt3306a_write_reg(state, 0x2122, 0x70);
1334 } else { /* Weak ghost or static channel */
1335 ret = lgdt3306a_read_reg(state, 0x2135, &val);
1340 ret = lgdt3306a_write_reg(state, 0x2135, val);
1344 ret = lgdt3306a_read_reg(state, 0x2141, &val);
1349 ret = lgdt3306a_write_reg(state, 0x2141, val);
1353 ret = lgdt3306a_write_reg(state, 0x2122, 0x40);
1360 static enum lgdt3306a_lock_status
1361 lgdt3306a_sync_lock_poll(struct lgdt3306a_state *state)
1363 enum lgdt3306a_lock_status syncLockStatus = LG3306_UNLOCK;
1366 for (i = 0; i < 2; i++) {
1369 syncLockStatus = lgdt3306a_check_lock_status(state,
1372 if (syncLockStatus == LG3306_LOCK) {
1373 dbg_info("locked(%d)\n", i);
1377 dbg_info("not locked\n");
1378 return LG3306_UNLOCK;
1381 static enum lgdt3306a_lock_status
1382 lgdt3306a_fec_lock_poll(struct lgdt3306a_state *state)
1384 enum lgdt3306a_lock_status FECLockStatus = LG3306_UNLOCK;
1387 for (i = 0; i < 2; i++) {
1390 FECLockStatus = lgdt3306a_check_lock_status(state,
1393 if (FECLockStatus == LG3306_LOCK) {
1394 dbg_info("locked(%d)\n", i);
1395 return FECLockStatus;
1398 dbg_info("not locked\n");
1399 return FECLockStatus;
1402 static enum lgdt3306a_neverlock_status
1403 lgdt3306a_neverlock_poll(struct lgdt3306a_state *state)
1405 enum lgdt3306a_neverlock_status NLLockStatus = LG3306_NL_FAIL;
1408 for (i = 0; i < 5; i++) {
1411 NLLockStatus = lgdt3306a_check_neverlock_status(state);
1413 if (NLLockStatus == LG3306_NL_LOCK) {
1414 dbg_info("NL_LOCK(%d)\n", i);
1415 return NLLockStatus;
1418 dbg_info("NLLockStatus=%d\n", NLLockStatus);
1419 return NLLockStatus;
1422 static u8 lgdt3306a_get_packet_error(struct lgdt3306a_state *state)
1427 ret = lgdt3306a_read_reg(state, 0x00fa, &val);
1434 static const u32 valx_x10[] = {
1435 10, 11, 13, 15, 17, 20, 25, 33, 41, 50, 59, 73, 87, 100
1437 static const u32 log10x_x1000[] = {
1438 0, 41, 114, 176, 230, 301, 398, 518, 613, 699, 771, 863, 939, 1000
1441 static u32 log10_x1000(u32 x)
1443 u32 diff_val, step_val, step_log10;
1448 return -1000000; /* signal error */
1451 return 0; /* log(1)=0 */
1458 } else { /* x > 10 */
1466 if (x == 10) /* was our input an exact multiple of 10 */
1467 return log_val; /* don't need to interpolate */
1469 /* find our place on the log curve */
1470 for (i = 1; i < ARRAY_SIZE(valx_x10); i++) {
1471 if (valx_x10[i] >= x)
1474 if (i == ARRAY_SIZE(valx_x10))
1475 return log_val + log10x_x1000[i - 1];
1477 diff_val = x - valx_x10[i-1];
1478 step_val = valx_x10[i] - valx_x10[i - 1];
1479 step_log10 = log10x_x1000[i] - log10x_x1000[i - 1];
1481 /* do a linear interpolation to get in-between values */
1482 return log_val + log10x_x1000[i - 1] +
1483 ((diff_val*step_log10) / step_val);
1486 static u32 lgdt3306a_calculate_snr_x100(struct lgdt3306a_state *state)
1488 u32 mse; /* Mean-Square Error */
1489 u32 pwr; /* Constelation power */
1492 mse = (read_reg(state, 0x00ec) << 8) |
1493 (read_reg(state, 0x00ed));
1494 pwr = (read_reg(state, 0x00e8) << 8) |
1495 (read_reg(state, 0x00e9));
1497 if (mse == 0) /* no signal */
1500 snr_x100 = log10_x1000((pwr * 10000) / mse) - 3000;
1501 dbg_info("mse=%u, pwr=%u, snr_x100=%d\n", mse, pwr, snr_x100);
1506 static enum lgdt3306a_lock_status
1507 lgdt3306a_vsb_lock_poll(struct lgdt3306a_state *state)
1514 for (cnt = 0; cnt < 10; cnt++) {
1515 if (lgdt3306a_sync_lock_poll(state) == LG3306_UNLOCK) {
1516 dbg_info("no sync lock!\n");
1517 return LG3306_UNLOCK;
1521 ret = lgdt3306a_pre_monitoring(state);
1525 packet_error = lgdt3306a_get_packet_error(state);
1526 snr = lgdt3306a_calculate_snr_x100(state);
1527 dbg_info("cnt=%d errors=%d snr=%d\n", cnt, packet_error, snr);
1529 if ((snr >= 1500) && (packet_error < 0xff))
1533 dbg_info("not locked!\n");
1534 return LG3306_UNLOCK;
1537 static enum lgdt3306a_lock_status
1538 lgdt3306a_qam_lock_poll(struct lgdt3306a_state *state)
1544 for (cnt = 0; cnt < 10; cnt++) {
1545 if (lgdt3306a_fec_lock_poll(state) == LG3306_UNLOCK) {
1546 dbg_info("no fec lock!\n");
1547 return LG3306_UNLOCK;
1552 packet_error = lgdt3306a_get_packet_error(state);
1553 snr = lgdt3306a_calculate_snr_x100(state);
1554 dbg_info("cnt=%d errors=%d snr=%d\n", cnt, packet_error, snr);
1556 if ((snr >= 1500) && (packet_error < 0xff))
1560 dbg_info("not locked!\n");
1561 return LG3306_UNLOCK;
1564 static int lgdt3306a_read_status(struct dvb_frontend *fe,
1565 enum fe_status *status)
1567 struct lgdt3306a_state *state = fe->demodulator_priv;
1571 if (fe->ops.tuner_ops.get_rf_strength) {
1572 ret = fe->ops.tuner_ops.get_rf_strength(fe, &strength);
1574 dbg_info("strength=%d\n", strength);
1576 dbg_info("fe->ops.tuner_ops.get_rf_strength() failed\n");
1580 if (lgdt3306a_neverlock_poll(state) == LG3306_NL_LOCK) {
1581 *status |= FE_HAS_SIGNAL;
1582 *status |= FE_HAS_CARRIER;
1584 switch (state->current_modulation) {
1587 if (lgdt3306a_qam_lock_poll(state) == LG3306_LOCK) {
1588 *status |= FE_HAS_VITERBI;
1589 *status |= FE_HAS_SYNC;
1591 *status |= FE_HAS_LOCK;
1595 if (lgdt3306a_vsb_lock_poll(state) == LG3306_LOCK) {
1596 *status |= FE_HAS_VITERBI;
1597 *status |= FE_HAS_SYNC;
1599 *status |= FE_HAS_LOCK;
1601 ret = lgdt3306a_monitor_vsb(state);
1612 static int lgdt3306a_read_snr(struct dvb_frontend *fe, u16 *snr)
1614 struct lgdt3306a_state *state = fe->demodulator_priv;
1616 state->snr = lgdt3306a_calculate_snr_x100(state);
1617 /* report SNR in dB * 10 */
1618 *snr = state->snr/10;
1623 static int lgdt3306a_read_signal_strength(struct dvb_frontend *fe,
1627 * Calculate some sort of "strength" from SNR
1629 struct lgdt3306a_state *state = fe->demodulator_priv;
1630 u16 snr; /* snr_x10 */
1632 u32 ref_snr; /* snr*100 */
1637 switch (state->current_modulation) {
1639 ref_snr = 1600; /* 16dB */
1642 ref_snr = 2200; /* 22dB */
1645 ref_snr = 2800; /* 28dB */
1651 ret = fe->ops.read_snr(fe, &snr);
1655 if (state->snr <= (ref_snr - 100))
1657 else if (state->snr <= ref_snr)
1658 str = (0xffff * 65) / 100; /* 65% */
1660 str = state->snr - ref_snr;
1662 str += 78; /* 78%-100% */
1665 str = (0xffff * str) / 100;
1667 *strength = (u16)str;
1668 dbg_info("strength=%u\n", *strength);
1674 /* ------------------------------------------------------------------------ */
1676 static int lgdt3306a_read_ber(struct dvb_frontend *fe, u32 *ber)
1678 struct lgdt3306a_state *state = fe->demodulator_priv;
1683 /* FGR - FIXME - I don't know what value is expected by dvb_core
1684 * what is the scale of the value?? */
1685 tmp = read_reg(state, 0x00fc); /* NBERVALUE[24-31] */
1686 tmp = (tmp << 8) | read_reg(state, 0x00fd); /* NBERVALUE[16-23] */
1687 tmp = (tmp << 8) | read_reg(state, 0x00fe); /* NBERVALUE[8-15] */
1688 tmp = (tmp << 8) | read_reg(state, 0x00ff); /* NBERVALUE[0-7] */
1690 dbg_info("ber=%u\n", tmp);
1695 static int lgdt3306a_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
1697 struct lgdt3306a_state *state = fe->demodulator_priv;
1701 /* FGR - FIXME - I don't know what value is expected by dvb_core
1702 * what happens when value wraps? */
1703 *ucblocks = read_reg(state, 0x00f4); /* TPIFTPERRCNT[0-7] */
1704 dbg_info("ucblocks=%u\n", *ucblocks);
1710 static int lgdt3306a_tune(struct dvb_frontend *fe, bool re_tune,
1711 unsigned int mode_flags, unsigned int *delay,
1712 enum fe_status *status)
1715 struct lgdt3306a_state *state = fe->demodulator_priv;
1717 dbg_info("re_tune=%u\n", re_tune);
1720 state->current_frequency = -1; /* force re-tune */
1721 ret = lgdt3306a_set_parameters(fe);
1726 ret = lgdt3306a_read_status(fe, status);
1731 static int lgdt3306a_get_tune_settings(struct dvb_frontend *fe,
1732 struct dvb_frontend_tune_settings
1735 fe_tune_settings->min_delay_ms = 100;
1740 static int lgdt3306a_search(struct dvb_frontend *fe)
1742 enum fe_status status = 0;
1746 ret = lgdt3306a_set_parameters(fe);
1750 ret = lgdt3306a_read_status(fe, &status);
1754 /* check if we have a valid signal */
1755 if (status & FE_HAS_LOCK)
1756 return DVBFE_ALGO_SEARCH_SUCCESS;
1758 return DVBFE_ALGO_SEARCH_AGAIN;
1761 dbg_info("failed (%d)\n", ret);
1762 return DVBFE_ALGO_SEARCH_ERROR;
1765 static void lgdt3306a_release(struct dvb_frontend *fe)
1767 struct lgdt3306a_state *state = fe->demodulator_priv;
1773 static const struct dvb_frontend_ops lgdt3306a_ops;
1775 struct dvb_frontend *lgdt3306a_attach(const struct lgdt3306a_config *config,
1776 struct i2c_adapter *i2c_adap)
1778 struct lgdt3306a_state *state = NULL;
1782 dbg_info("(%d-%04x)\n",
1783 i2c_adap ? i2c_adapter_id(i2c_adap) : 0,
1784 config ? config->i2c_addr : 0);
1786 state = kzalloc(sizeof(struct lgdt3306a_state), GFP_KERNEL);
1790 state->cfg = config;
1791 state->i2c_adap = i2c_adap;
1793 memcpy(&state->frontend.ops, &lgdt3306a_ops,
1794 sizeof(struct dvb_frontend_ops));
1795 state->frontend.demodulator_priv = state;
1797 /* verify that we're talking to a lg3306a */
1798 /* FGR - NOTE - there is no obvious ChipId to check; we check
1799 * some "known" bits after reset, but it's still just a guess */
1800 ret = lgdt3306a_read_reg(state, 0x0000, &val);
1803 if ((val & 0x74) != 0x74) {
1804 pr_warn("expected 0x74, got 0x%x\n", (val & 0x74));
1806 /* FIXME - re-enable when we know this is right */
1810 ret = lgdt3306a_read_reg(state, 0x0001, &val);
1813 if ((val & 0xf6) != 0xc6) {
1814 pr_warn("expected 0xc6, got 0x%x\n", (val & 0xf6));
1816 /* FIXME - re-enable when we know this is right */
1820 ret = lgdt3306a_read_reg(state, 0x0002, &val);
1823 if ((val & 0x73) != 0x03) {
1824 pr_warn("expected 0x03, got 0x%x\n", (val & 0x73));
1826 /* FIXME - re-enable when we know this is right */
1831 state->current_frequency = -1;
1832 state->current_modulation = -1;
1834 lgdt3306a_sleep(state);
1836 return &state->frontend;
1839 pr_warn("unable to detect LGDT3306A hardware\n");
1843 EXPORT_SYMBOL(lgdt3306a_attach);
1847 static const short regtab[] = {
1848 0x0000, /* SOFTRSTB 1'b1 1'b1 1'b1 ADCPDB 1'b1 PLLPDB GBBPDB 11111111 */
1849 0x0001, /* 1'b1 1'b1 1'b0 1'b0 AUTORPTRS */
1850 0x0002, /* NI2CRPTEN 1'b0 1'b0 1'b0 SPECINVAUT */
1851 0x0003, /* AGCRFOUT */
1852 0x0004, /* ADCSEL1V ADCCNT ADCCNF ADCCNS ADCCLKPLL */
1853 0x0005, /* PLLINDIVSE */
1854 0x0006, /* PLLCTRL[7:0] 11100001 */
1855 0x0007, /* SYSINITWAITTIME[7:0] (msec) 00001000 */
1856 0x0008, /* STDOPMODE[7:0] 10000000 */
1857 0x0009, /* 1'b0 1'b0 1'b0 STDOPDETTMODE[2:0] STDOPDETCMODE[1:0] 00011110 */
1858 0x000a, /* DAFTEN 1'b1 x x SCSYSLOCK */
1859 0x000b, /* SCSYSLOCKCHKTIME[7:0] (10msec) 01100100 */
1860 0x000d, /* x SAMPLING4 */
1861 0x000e, /* SAMFREQ[15:8] 00000000 */
1862 0x000f, /* SAMFREQ[7:0] 00000000 */
1863 0x0010, /* IFFREQ[15:8] 01100000 */
1864 0x0011, /* IFFREQ[7:0] 00000000 */
1865 0x0012, /* AGCEN AGCREFMO */
1866 0x0013, /* AGCRFFIXB AGCIFFIXB AGCLOCKDETRNGSEL[1:0] 1'b1 1'b0 1'b0 1'b0 11101000 */
1867 0x0014, /* AGCFIXVALUE[7:0] 01111111 */
1868 0x0015, /* AGCREF[15:8] 00001010 */
1869 0x0016, /* AGCREF[7:0] 11100100 */
1870 0x0017, /* AGCDELAY[7:0] 00100000 */
1871 0x0018, /* AGCRFBW[3:0] AGCIFBW[3:0] 10001000 */
1872 0x0019, /* AGCUDOUTMODE[1:0] AGCUDCTRLLEN[1:0] AGCUDCTRL */
1873 0x001c, /* 1'b1 PFEN MFEN AICCVSYNC */
1874 0x001d, /* 1'b0 1'b1 1'b0 1'b1 AICCVSYNC */
1875 0x001e, /* AICCALPHA[3:0] 1'b1 1'b0 1'b1 1'b0 01111010 */
1876 0x001f, /* AICCDETTH[19:16] AICCOFFTH[19:16] 00000000 */
1877 0x0020, /* AICCDETTH[15:8] 01111100 */
1878 0x0021, /* AICCDETTH[7:0] 00000000 */
1879 0x0022, /* AICCOFFTH[15:8] 00000101 */
1880 0x0023, /* AICCOFFTH[7:0] 11100000 */
1881 0x0024, /* AICCOPMODE3[1:0] AICCOPMODE2[1:0] AICCOPMODE1[1:0] AICCOPMODE0[1:0] 00000000 */
1882 0x0025, /* AICCFIXFREQ3[23:16] 00000000 */
1883 0x0026, /* AICCFIXFREQ3[15:8] 00000000 */
1884 0x0027, /* AICCFIXFREQ3[7:0] 00000000 */
1885 0x0028, /* AICCFIXFREQ2[23:16] 00000000 */
1886 0x0029, /* AICCFIXFREQ2[15:8] 00000000 */
1887 0x002a, /* AICCFIXFREQ2[7:0] 00000000 */
1888 0x002b, /* AICCFIXFREQ1[23:16] 00000000 */
1889 0x002c, /* AICCFIXFREQ1[15:8] 00000000 */
1890 0x002d, /* AICCFIXFREQ1[7:0] 00000000 */
1891 0x002e, /* AICCFIXFREQ0[23:16] 00000000 */
1892 0x002f, /* AICCFIXFREQ0[15:8] 00000000 */
1893 0x0030, /* AICCFIXFREQ0[7:0] 00000000 */
1894 0x0031, /* 1'b0 1'b1 1'b0 1'b0 x DAGC1STER */
1895 0x0032, /* DAGC1STEN DAGC1STER */
1896 0x0033, /* DAGC1STREF[15:8] 00001010 */
1897 0x0034, /* DAGC1STREF[7:0] 11100100 */
1898 0x0035, /* DAGC2NDE */
1899 0x0036, /* DAGC2NDREF[15:8] 00001010 */
1900 0x0037, /* DAGC2NDREF[7:0] 10000000 */
1901 0x0038, /* DAGC2NDLOCKDETRNGSEL[1:0] */
1902 0x003d, /* 1'b1 SAMGEARS */
1903 0x0040, /* SAMLFGMA */
1904 0x0041, /* SAMLFBWM */
1905 0x0044, /* 1'b1 CRGEARSHE */
1906 0x0045, /* CRLFGMAN */
1907 0x0046, /* CFLFBWMA */
1908 0x0047, /* CRLFGMAN */
1909 0x0048, /* x x x x CRLFGSTEP_VS[3:0] xxxx1001 */
1910 0x0049, /* CRLFBWMA */
1911 0x004a, /* CRLFBWMA */
1912 0x0050, /* 1'b0 1'b1 1'b1 1'b0 MSECALCDA */
1913 0x0070, /* TPOUTEN TPIFEN TPCLKOUTE */
1914 0x0071, /* TPSENB TPSSOPBITE */
1915 0x0073, /* TP47HINS x x CHBERINT PERMODE[1:0] PERINT[1:0] 1xx11100 */
1916 0x0075, /* x x x x x IQSWAPCTRL[2:0] xxxxx000 */
1917 0x0076, /* NBERCON NBERST NBERPOL NBERWSYN */
1918 0x0077, /* x NBERLOSTTH[2:0] NBERACQTH[3:0] x0000000 */
1919 0x0078, /* NBERPOLY[31:24] 00000000 */
1920 0x0079, /* NBERPOLY[23:16] 00000000 */
1921 0x007a, /* NBERPOLY[15:8] 00000000 */
1922 0x007b, /* NBERPOLY[7:0] 00000000 */
1923 0x007c, /* NBERPED[31:24] 00000000 */
1924 0x007d, /* NBERPED[23:16] 00000000 */
1925 0x007e, /* NBERPED[15:8] 00000000 */
1926 0x007f, /* NBERPED[7:0] 00000000 */
1927 0x0080, /* x AGCLOCK DAGCLOCK SYSLOCK x x NEVERLOCK[1:0] */
1928 0x0085, /* SPECINVST */
1929 0x0088, /* SYSLOCKTIME[15:8] */
1930 0x0089, /* SYSLOCKTIME[7:0] */
1931 0x008c, /* FECLOCKTIME[15:8] */
1932 0x008d, /* FECLOCKTIME[7:0] */
1933 0x008e, /* AGCACCOUT[15:8] */
1934 0x008f, /* AGCACCOUT[7:0] */
1935 0x0090, /* AICCREJSTATUS[3:0] AICCREJBUSY[3:0] */
1936 0x0091, /* AICCVSYNC */
1937 0x009c, /* CARRFREQOFFSET[15:8] */
1938 0x009d, /* CARRFREQOFFSET[7:0] */
1939 0x00a1, /* SAMFREQOFFSET[23:16] */
1940 0x00a2, /* SAMFREQOFFSET[15:8] */
1941 0x00a3, /* SAMFREQOFFSET[7:0] */
1942 0x00a6, /* SYNCLOCK SYNCLOCKH */
1943 #if 0 /* covered elsewhere */
1944 0x00e8, /* CONSTPWR[15:8] */
1945 0x00e9, /* CONSTPWR[7:0] */
1946 0x00ea, /* BMSE[15:8] */
1947 0x00eb, /* BMSE[7:0] */
1948 0x00ec, /* MSE[15:8] */
1949 0x00ed, /* MSE[7:0] */
1950 0x00ee, /* CONSTI[7:0] */
1951 0x00ef, /* CONSTQ[7:0] */
1953 0x00f4, /* TPIFTPERRCNT[7:0] */
1954 0x00f5, /* TPCORREC */
1955 0x00f6, /* VBBER[15:8] */
1956 0x00f7, /* VBBER[7:0] */
1957 0x00f8, /* VABER[15:8] */
1958 0x00f9, /* VABER[7:0] */
1959 0x00fa, /* TPERRCNT[7:0] */
1960 0x00fb, /* NBERLOCK x x x x x x x */
1961 0x00fc, /* NBERVALUE[31:24] */
1962 0x00fd, /* NBERVALUE[23:16] */
1963 0x00fe, /* NBERVALUE[15:8] */
1964 0x00ff, /* NBERVALUE[7:0] */
1965 0x1000, /* 1'b0 WODAGCOU */
1966 0x1005, /* x x 1'b1 1'b1 x SRD_Q_QM */
1967 0x1009, /* SRDWAITTIME[7:0] (10msec) 00100011 */
1968 0x100a, /* SRDWAITTIME_CQS[7:0] (msec) 01100100 */
1969 0x101a, /* x 1'b1 1'b0 1'b0 x QMDQAMMODE[2:0] x100x010 */
1970 0x1036, /* 1'b0 1'b1 1'b0 1'b0 SAMGSEND_CQS[3:0] 01001110 */
1971 0x103c, /* SAMGSAUTOSTL_V[3:0] SAMGSAUTOEDL_V[3:0] 01000110 */
1972 0x103d, /* 1'b1 1'b1 SAMCNORMBP_V[1:0] 1'b0 1'b0 SAMMODESEL_V[1:0] 11100001 */
1973 0x103f, /* SAMZTEDSE */
1974 0x105d, /* EQSTATUSE */
1975 0x105f, /* x PMAPG2_V[2:0] x DMAPG2_V[2:0] x001x011 */
1976 0x1060, /* 1'b1 EQSTATUSE */
1977 0x1061, /* CRMAPBWSTL_V[3:0] CRMAPBWEDL_V[3:0] 00000100 */
1978 0x1065, /* 1'b0 x CRMODE_V[1:0] 1'b1 x 1'b1 x 0x111x1x */
1979 0x1066, /* 1'b0 1'b0 1'b1 1'b0 1'b1 PNBOOSTSE */
1980 0x1068, /* CREPHNGAIN2_V[3:0] CREPHNPBW_V[3:0] 10010001 */
1981 0x106e, /* x x x x x CREPHNEN_ */
1982 0x106f, /* CREPHNTH_V[7:0] 00010101 */
1983 0x1072, /* CRSWEEPN */
1984 0x1073, /* CRPGAIN_V[3:0] x x 1'b1 1'b1 1001xx11 */
1985 0x1074, /* CRPBW_V[3:0] x x 1'b1 1'b1 0001xx11 */
1986 0x1080, /* DAFTSTATUS[1:0] x x x x x x */
1987 0x1081, /* SRDSTATUS[1:0] x x x x x SRDLOCK */
1988 0x10a9, /* EQSTATUS_CQS[1:0] x x x x x x */
1989 0x10b7, /* EQSTATUS_V[1:0] x x x x x x */
1990 #if 0 /* SMART_ANT */
1991 0x1f00, /* MODEDETE */
1992 0x1f01, /* x x x x x x x SFNRST xxxxxxx0 */
1993 0x1f03, /* NUMOFANT[7:0] 10000000 */
1994 0x1f04, /* x SELMASK[6:0] x0000000 */
1995 0x1f05, /* x SETMASK[6:0] x0000000 */
1996 0x1f06, /* x TXDATA[6:0] x0000000 */
1997 0x1f07, /* x CHNUMBER[6:0] x0000000 */
1998 0x1f09, /* AGCTIME[23:16] 10011000 */
1999 0x1f0a, /* AGCTIME[15:8] 10010110 */
2000 0x1f0b, /* AGCTIME[7:0] 10000000 */
2001 0x1f0c, /* ANTTIME[31:24] 00000000 */
2002 0x1f0d, /* ANTTIME[23:16] 00000011 */
2003 0x1f0e, /* ANTTIME[15:8] 10010000 */
2004 0x1f0f, /* ANTTIME[7:0] 10010000 */
2005 0x1f11, /* SYNCTIME[23:16] 10011000 */
2006 0x1f12, /* SYNCTIME[15:8] 10010110 */
2007 0x1f13, /* SYNCTIME[7:0] 10000000 */
2008 0x1f14, /* SNRTIME[31:24] 00000001 */
2009 0x1f15, /* SNRTIME[23:16] 01111101 */
2010 0x1f16, /* SNRTIME[15:8] 01111000 */
2011 0x1f17, /* SNRTIME[7:0] 01000000 */
2012 0x1f19, /* FECTIME[23:16] 00000000 */
2013 0x1f1a, /* FECTIME[15:8] 01110010 */
2014 0x1f1b, /* FECTIME[7:0] 01110000 */
2015 0x1f1d, /* FECTHD[7:0] 00000011 */
2016 0x1f1f, /* SNRTHD[23:16] 00001000 */
2017 0x1f20, /* SNRTHD[15:8] 01111111 */
2018 0x1f21, /* SNRTHD[7:0] 10000101 */
2019 0x1f80, /* IRQFLG x x SFSDRFLG MODEBFLG SAVEFLG SCANFLG TRACKFLG */
2020 0x1f81, /* x SYNCCON SNRCON FECCON x STDBUSY SYNCRST AGCFZCO */
2021 0x1f82, /* x x x SCANOPCD[4:0] */
2022 0x1f83, /* x x x x MAINOPCD[3:0] */
2023 0x1f84, /* x x RXDATA[13:8] */
2024 0x1f85, /* RXDATA[7:0] */
2025 0x1f86, /* x x SDTDATA[13:8] */
2026 0x1f87, /* SDTDATA[7:0] */
2027 0x1f89, /* ANTSNR[23:16] */
2028 0x1f8a, /* ANTSNR[15:8] */
2029 0x1f8b, /* ANTSNR[7:0] */
2030 0x1f8c, /* x x x x ANTFEC[13:8] */
2031 0x1f8d, /* ANTFEC[7:0] */
2032 0x1f8e, /* MAXCNT[7:0] */
2033 0x1f8f, /* SCANCNT[7:0] */
2034 0x1f91, /* MAXPW[23:16] */
2035 0x1f92, /* MAXPW[15:8] */
2036 0x1f93, /* MAXPW[7:0] */
2037 0x1f95, /* CURPWMSE[23:16] */
2038 0x1f96, /* CURPWMSE[15:8] */
2039 0x1f97, /* CURPWMSE[7:0] */
2040 #endif /* SMART_ANT */
2041 0x211f, /* 1'b1 1'b1 1'b1 CIRQEN x x 1'b0 1'b0 1111xx00 */
2042 0x212a, /* EQAUTOST */
2043 0x2122, /* CHFAST[7:0] 01100000 */
2044 0x212b, /* FFFSTEP_V[3:0] x FBFSTEP_V[2:0] 0001x001 */
2045 0x212c, /* PHDEROTBWSEL[3:0] 1'b1 1'b1 1'b1 1'b0 10001110 */
2046 0x212d, /* 1'b1 1'b1 1'b1 1'b1 x x TPIFLOCKS */
2047 0x2135, /* DYNTRACKFDEQ[3:0] x 1'b0 1'b0 1'b0 1010x000 */
2048 0x2141, /* TRMODE[1:0] 1'b1 1'b1 1'b0 1'b1 1'b1 1'b1 01110111 */
2049 0x2162, /* AICCCTRLE */
2050 0x2173, /* PHNCNFCNT[7:0] 00000100 */
2051 0x2179, /* 1'b0 1'b0 1'b0 1'b1 x BADSINGLEDYNTRACKFBF[2:0] 0001x001 */
2052 0x217a, /* 1'b0 1'b0 1'b0 1'b1 x BADSLOWSINGLEDYNTRACKFBF[2:0] 0001x001 */
2053 0x217e, /* CNFCNTTPIF[7:0] 00001000 */
2054 0x217f, /* TPERRCNTTPIF[7:0] 00000001 */
2055 0x2180, /* x x x x x x FBDLYCIR[9:8] */
2056 0x2181, /* FBDLYCIR[7:0] */
2057 0x2185, /* MAXPWRMAIN[7:0] */
2058 0x2191, /* NCOMBDET x x x x x x x */
2059 0x2199, /* x MAINSTRON */
2060 0x219a, /* FFFEQSTEPOUT_V[3:0] FBFSTEPOUT_V[2:0] */
2061 0x21a1, /* x x SNRREF[5:0] */
2062 0x2845, /* 1'b0 1'b1 x x FFFSTEP_CQS[1:0] FFFCENTERTAP[1:0] 01xx1110 */
2063 0x2846, /* 1'b0 x 1'b0 1'b1 FBFSTEP_CQS[1:0] 1'b1 1'b0 0x011110 */
2064 0x2847, /* ENNOSIGDE */
2065 0x2849, /* 1'b1 1'b1 NOUSENOSI */
2066 0x284a, /* EQINITWAITTIME[7:0] 01100100 */
2067 0x3000, /* 1'b1 1'b1 1'b1 x x x 1'b0 RPTRSTM */
2068 0x3001, /* RPTRSTWAITTIME[7:0] (100msec) 00110010 */
2069 0x3031, /* FRAMELOC */
2070 0x3032, /* 1'b1 1'b0 1'b0 1'b0 x x FRAMELOCKMODE_CQS[1:0] 1000xx11 */
2071 0x30a9, /* VDLOCK_Q FRAMELOCK */
2072 0x30aa, /* MPEGLOCK */
2075 #define numDumpRegs (sizeof(regtab)/sizeof(regtab[0]))
2076 static u8 regval1[numDumpRegs] = {0, };
2077 static u8 regval2[numDumpRegs] = {0, };
2079 static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state *state)
2081 memset(regval2, 0xff, sizeof(regval2));
2082 lgdt3306a_DumpRegs(state);
2085 static void lgdt3306a_DumpRegs(struct lgdt3306a_state *state)
2088 int sav_debug = debug;
2090 if ((debug & DBG_DUMP) == 0)
2092 debug &= ~DBG_REG; /* suppress DBG_REG during reg dump */
2096 for (i = 0; i < numDumpRegs; i++) {
2097 lgdt3306a_read_reg(state, regtab[i], ®val1[i]);
2098 if (regval1[i] != regval2[i]) {
2099 lg_debug(" %04X = %02X\n", regtab[i], regval1[i]);
2100 regval2[i] = regval1[i];
2105 #endif /* DBG_DUMP */
2109 static const struct dvb_frontend_ops lgdt3306a_ops = {
2110 .delsys = { SYS_ATSC, SYS_DVBC_ANNEX_B },
2112 .name = "LG Electronics LGDT3306A VSB/QAM Frontend",
2113 .frequency_min = 54000000,
2114 .frequency_max = 858000000,
2115 .frequency_stepsize = 62500,
2116 .caps = FE_CAN_QAM_64 | FE_CAN_QAM_256 | FE_CAN_8VSB
2118 .i2c_gate_ctrl = lgdt3306a_i2c_gate_ctrl,
2119 .init = lgdt3306a_init,
2120 .sleep = lgdt3306a_fe_sleep,
2121 /* if this is set, it overrides the default swzigzag */
2122 .tune = lgdt3306a_tune,
2123 .set_frontend = lgdt3306a_set_parameters,
2124 .get_frontend = lgdt3306a_get_frontend,
2125 .get_frontend_algo = lgdt3306a_get_frontend_algo,
2126 .get_tune_settings = lgdt3306a_get_tune_settings,
2127 .read_status = lgdt3306a_read_status,
2128 .read_ber = lgdt3306a_read_ber,
2129 .read_signal_strength = lgdt3306a_read_signal_strength,
2130 .read_snr = lgdt3306a_read_snr,
2131 .read_ucblocks = lgdt3306a_read_ucblocks,
2132 .release = lgdt3306a_release,
2133 .ts_bus_ctrl = lgdt3306a_ts_bus_ctrl,
2134 .search = lgdt3306a_search,
2137 static int lgdt3306a_select(struct i2c_mux_core *muxc, u32 chan)
2139 struct i2c_client *client = i2c_mux_priv(muxc);
2140 struct lgdt3306a_state *state = i2c_get_clientdata(client);
2142 return lgdt3306a_i2c_gate_ctrl(&state->frontend, 1);
2145 static int lgdt3306a_deselect(struct i2c_mux_core *muxc, u32 chan)
2147 struct i2c_client *client = i2c_mux_priv(muxc);
2148 struct lgdt3306a_state *state = i2c_get_clientdata(client);
2150 return lgdt3306a_i2c_gate_ctrl(&state->frontend, 0);
2153 static int lgdt3306a_probe(struct i2c_client *client,
2154 const struct i2c_device_id *id)
2156 struct lgdt3306a_config *config;
2157 struct lgdt3306a_state *state;
2158 struct dvb_frontend *fe;
2161 config = kzalloc(sizeof(struct lgdt3306a_config), GFP_KERNEL);
2162 if (config == NULL) {
2167 memcpy(config, client->dev.platform_data,
2168 sizeof(struct lgdt3306a_config));
2170 config->i2c_addr = client->addr;
2171 fe = lgdt3306a_attach(config, client->adapter);
2177 i2c_set_clientdata(client, fe->demodulator_priv);
2178 state = fe->demodulator_priv;
2180 /* create mux i2c adapter for tuner */
2181 state->muxc = i2c_mux_alloc(client->adapter, &client->dev,
2182 1, 0, I2C_MUX_LOCKED,
2183 lgdt3306a_select, lgdt3306a_deselect);
2188 state->muxc->priv = client;
2189 ret = i2c_mux_add_adapter(state->muxc, 0, 0, 0);
2193 /* create dvb_frontend */
2194 fe->ops.i2c_gate_ctrl = NULL;
2195 *config->i2c_adapter = state->muxc->adapter[0];
2205 dev_dbg(&client->dev, "failed=%d\n", ret);
2209 static int lgdt3306a_remove(struct i2c_client *client)
2211 struct lgdt3306a_state *state = i2c_get_clientdata(client);
2213 i2c_mux_del_adapters(state->muxc);
2215 state->frontend.ops.release = NULL;
2216 state->frontend.demodulator_priv = NULL;
2224 static const struct i2c_device_id lgdt3306a_id_table[] = {
2228 MODULE_DEVICE_TABLE(i2c, lgdt3306a_id_table);
2230 static struct i2c_driver lgdt3306a_driver = {
2232 .name = "lgdt3306a",
2233 .suppress_bind_attrs = true,
2235 .probe = lgdt3306a_probe,
2236 .remove = lgdt3306a_remove,
2237 .id_table = lgdt3306a_id_table,
2240 module_i2c_driver(lgdt3306a_driver);
2242 MODULE_DESCRIPTION("LG Electronics LGDT3306A ATSC/QAM-B Demodulator Driver");
2243 MODULE_AUTHOR("Fred Richter <frichter@hauppauge.com>");
2244 MODULE_LICENSE("GPL");
2245 MODULE_VERSION("0.2");