1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Support for LGDT3306A - 8VSB/QAM-B
5 * Copyright (C) 2013 Fred Richter <frichter@hauppauge.com>
6 * - driver structure based on lgdt3305.[ch] by Michael Krufky
7 * - code based on LG3306_V0.35 API by LG Electronics Inc.
10 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
12 #include <asm/div64.h>
13 #include <linux/kernel.h>
14 #include <linux/dvb/frontend.h>
15 #include <media/dvb_math.h>
16 #include "lgdt3306a.h"
17 #include <linux/i2c-mux.h>
21 module_param(debug
, int, 0644);
22 MODULE_PARM_DESC(debug
, "set debug level (info=1, reg=2 (or-able))");
25 * Older drivers treated QAM64 and QAM256 the same; that is the HW always
26 * used "Auto" mode during detection. Setting "forced_manual"=1 allows
27 * the user to treat these modes as separate. For backwards compatibility,
28 * it's off by default. QAM_AUTO can now be specified to achive that
29 * effect even if "forced_manual"=1
31 static int forced_manual
;
32 module_param(forced_manual
, int, 0644);
33 MODULE_PARM_DESC(forced_manual
, "if set, QAM64 and QAM256 will only lock to modulation specified");
37 #define DBG_DUMP 4 /* FGR - comment out to remove dump code */
39 #define lg_debug(fmt, arg...) \
40 printk(KERN_DEBUG pr_fmt(fmt), ## arg)
42 #define dbg_info(fmt, arg...) \
44 if (debug & DBG_INFO) \
45 lg_debug(fmt, ## arg); \
48 #define dbg_reg(fmt, arg...) \
50 if (debug & DBG_REG) \
51 lg_debug(fmt, ## arg); \
54 #define lg_chkerr(ret) \
59 pr_err("error %d on line %d\n", ret, __LINE__); \
63 struct lgdt3306a_state
{
64 struct i2c_adapter
*i2c_adap
;
65 const struct lgdt3306a_config
*cfg
;
67 struct dvb_frontend frontend
;
69 enum fe_modulation current_modulation
;
70 u32 current_frequency
;
73 struct i2c_mux_core
*muxc
;
77 * LG3306A Register Usage
78 * (LG does not really name the registers, so this code does not either)
80 * 0000 -> 00FF Common control and status
81 * 1000 -> 10FF Synchronizer control and status
82 * 1F00 -> 1FFF Smart Antenna control and status
83 * 2100 -> 21FF VSB Equalizer control and status
84 * 2800 -> 28FF QAM Equalizer control and status
85 * 3000 -> 30FF FEC control and status
88 enum lgdt3306a_lock_status
{
91 LG3306_UNKNOWN_LOCK
= 0xff
94 enum lgdt3306a_neverlock_status
{
95 LG3306_NL_INIT
= 0x00,
96 LG3306_NL_PROCESS
= 0x01,
97 LG3306_NL_LOCK
= 0x02,
98 LG3306_NL_FAIL
= 0x03,
99 LG3306_NL_UNKNOWN
= 0xff
102 enum lgdt3306a_modulation
{
105 LG3306_QAM256
= 0x02,
106 LG3306_UNKNOWN_MODE
= 0xff
109 enum lgdt3306a_lock_check
{
118 static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state
*state
);
119 static void lgdt3306a_DumpRegs(struct lgdt3306a_state
*state
);
123 static int lgdt3306a_write_reg(struct lgdt3306a_state
*state
, u16 reg
, u8 val
)
126 u8 buf
[] = { reg
>> 8, reg
& 0xff, val
};
127 struct i2c_msg msg
= {
128 .addr
= state
->cfg
->i2c_addr
, .flags
= 0,
129 .buf
= buf
, .len
= 3,
132 dbg_reg("reg: 0x%04x, val: 0x%02x\n", reg
, val
);
134 ret
= i2c_transfer(state
->i2c_adap
, &msg
, 1);
137 pr_err("error (addr %02x %02x <- %02x, err = %i)\n",
138 msg
.buf
[0], msg
.buf
[1], msg
.buf
[2], ret
);
147 static int lgdt3306a_read_reg(struct lgdt3306a_state
*state
, u16 reg
, u8
*val
)
150 u8 reg_buf
[] = { reg
>> 8, reg
& 0xff };
151 struct i2c_msg msg
[] = {
152 { .addr
= state
->cfg
->i2c_addr
,
153 .flags
= 0, .buf
= reg_buf
, .len
= 2 },
154 { .addr
= state
->cfg
->i2c_addr
,
155 .flags
= I2C_M_RD
, .buf
= val
, .len
= 1 },
158 ret
= i2c_transfer(state
->i2c_adap
, msg
, 2);
161 pr_err("error (addr %02x reg %04x error (ret == %i)\n",
162 state
->cfg
->i2c_addr
, reg
, ret
);
168 dbg_reg("reg: 0x%04x, val: 0x%02x\n", reg
, *val
);
173 #define read_reg(state, reg) \
176 int ret = lgdt3306a_read_reg(state, reg, &__val); \
177 if (lg_chkerr(ret)) \
182 static int lgdt3306a_set_reg_bit(struct lgdt3306a_state
*state
,
183 u16 reg
, int bit
, int onoff
)
188 dbg_reg("reg: 0x%04x, bit: %d, level: %d\n", reg
, bit
, onoff
);
190 ret
= lgdt3306a_read_reg(state
, reg
, &val
);
195 val
|= (onoff
& 1) << bit
;
197 ret
= lgdt3306a_write_reg(state
, reg
, val
);
203 /* ------------------------------------------------------------------------ */
205 static int lgdt3306a_soft_reset(struct lgdt3306a_state
*state
)
211 ret
= lgdt3306a_set_reg_bit(state
, 0x0000, 7, 0);
216 ret
= lgdt3306a_set_reg_bit(state
, 0x0000, 7, 1);
223 static int lgdt3306a_mpeg_mode(struct lgdt3306a_state
*state
,
224 enum lgdt3306a_mpeg_mode mode
)
229 dbg_info("(%d)\n", mode
);
230 /* transport packet format - TPSENB=0x80 */
231 ret
= lgdt3306a_set_reg_bit(state
, 0x0071, 7,
232 mode
== LGDT3306A_MPEG_PARALLEL
? 1 : 0);
237 * start of packet signal duration
238 * TPSSOPBITEN=0x40; 0=byte duration, 1=bit duration
240 ret
= lgdt3306a_set_reg_bit(state
, 0x0071, 6, 0);
244 ret
= lgdt3306a_read_reg(state
, 0x0070, &val
);
248 val
|= 0x10; /* TPCLKSUPB=0x10 */
250 if (mode
== LGDT3306A_MPEG_PARALLEL
)
253 ret
= lgdt3306a_write_reg(state
, 0x0070, val
);
260 static int lgdt3306a_mpeg_mode_polarity(struct lgdt3306a_state
*state
,
261 enum lgdt3306a_tp_clock_edge edge
,
262 enum lgdt3306a_tp_valid_polarity valid
)
267 dbg_info("edge=%d, valid=%d\n", edge
, valid
);
269 ret
= lgdt3306a_read_reg(state
, 0x0070, &val
);
273 val
&= ~0x06; /* TPCLKPOL=0x04, TPVALPOL=0x02 */
275 if (edge
== LGDT3306A_TPCLK_RISING_EDGE
)
277 if (valid
== LGDT3306A_TP_VALID_HIGH
)
280 ret
= lgdt3306a_write_reg(state
, 0x0070, val
);
287 static int lgdt3306a_mpeg_tristate(struct lgdt3306a_state
*state
,
293 dbg_info("(%d)\n", mode
);
296 ret
= lgdt3306a_read_reg(state
, 0x0070, &val
);
300 * Tristate bus; TPOUTEN=0x80, TPCLKOUTEN=0x20,
304 ret
= lgdt3306a_write_reg(state
, 0x0070, val
);
308 /* AGCIFOUTENB=0x40; 1=Disable IFAGC pin */
309 ret
= lgdt3306a_set_reg_bit(state
, 0x0003, 6, 1);
314 /* enable IFAGC pin */
315 ret
= lgdt3306a_set_reg_bit(state
, 0x0003, 6, 0);
319 ret
= lgdt3306a_read_reg(state
, 0x0070, &val
);
323 val
|= 0xa8; /* enable bus */
324 ret
= lgdt3306a_write_reg(state
, 0x0070, val
);
333 static int lgdt3306a_ts_bus_ctrl(struct dvb_frontend
*fe
, int acquire
)
335 struct lgdt3306a_state
*state
= fe
->demodulator_priv
;
337 dbg_info("acquire=%d\n", acquire
);
339 return lgdt3306a_mpeg_tristate(state
, acquire
? 0 : 1);
343 static int lgdt3306a_power(struct lgdt3306a_state
*state
,
348 dbg_info("(%d)\n", mode
);
352 ret
= lgdt3306a_set_reg_bit(state
, 0x0000, 7, 0);
357 ret
= lgdt3306a_set_reg_bit(state
, 0x0000, 0, 0);
363 ret
= lgdt3306a_set_reg_bit(state
, 0x0000, 7, 1);
368 ret
= lgdt3306a_set_reg_bit(state
, 0x0000, 0, 1);
374 lgdt3306a_DumpAllRegs(state
);
381 static int lgdt3306a_set_vsb(struct lgdt3306a_state
*state
)
388 /* 0. Spectrum inversion detection manual; spectrum inverted */
389 ret
= lgdt3306a_read_reg(state
, 0x0002, &val
);
390 val
&= 0xf7; /* SPECINVAUTO Off */
391 val
|= 0x04; /* SPECINV On */
392 ret
= lgdt3306a_write_reg(state
, 0x0002, val
);
396 /* 1. Selection of standard mode(0x08=QAM, 0x80=VSB) */
397 ret
= lgdt3306a_write_reg(state
, 0x0008, 0x80);
401 /* 2. Bandwidth mode for VSB(6MHz) */
402 ret
= lgdt3306a_read_reg(state
, 0x0009, &val
);
404 val
|= 0x0c; /* STDOPDETTMODE[2:0]=3 */
405 ret
= lgdt3306a_write_reg(state
, 0x0009, val
);
409 /* 3. QAM mode detection mode(None) */
410 ret
= lgdt3306a_read_reg(state
, 0x0009, &val
);
411 val
&= 0xfc; /* STDOPDETCMODE[1:0]=0 */
412 ret
= lgdt3306a_write_reg(state
, 0x0009, val
);
416 /* 4. ADC sampling frequency rate(2x sampling) */
417 ret
= lgdt3306a_read_reg(state
, 0x000d, &val
);
418 val
&= 0xbf; /* SAMPLING4XFEN=0 */
419 ret
= lgdt3306a_write_reg(state
, 0x000d, val
);
424 /* FGR - disable any AICC filtering, testing only */
426 ret
= lgdt3306a_write_reg(state
, 0x0024, 0x00);
430 /* AICCFIXFREQ0 NT N-1(Video rejection) */
431 ret
= lgdt3306a_write_reg(state
, 0x002e, 0x00);
432 ret
= lgdt3306a_write_reg(state
, 0x002f, 0x00);
433 ret
= lgdt3306a_write_reg(state
, 0x0030, 0x00);
435 /* AICCFIXFREQ1 NT N-1(Audio rejection) */
436 ret
= lgdt3306a_write_reg(state
, 0x002b, 0x00);
437 ret
= lgdt3306a_write_reg(state
, 0x002c, 0x00);
438 ret
= lgdt3306a_write_reg(state
, 0x002d, 0x00);
440 /* AICCFIXFREQ2 NT Co-Channel(Video rejection) */
441 ret
= lgdt3306a_write_reg(state
, 0x0028, 0x00);
442 ret
= lgdt3306a_write_reg(state
, 0x0029, 0x00);
443 ret
= lgdt3306a_write_reg(state
, 0x002a, 0x00);
445 /* AICCFIXFREQ3 NT Co-Channel(Audio rejection) */
446 ret
= lgdt3306a_write_reg(state
, 0x0025, 0x00);
447 ret
= lgdt3306a_write_reg(state
, 0x0026, 0x00);
448 ret
= lgdt3306a_write_reg(state
, 0x0027, 0x00);
451 /* FGR - this works well for HVR-1955,1975 */
453 /* 5. AICCOPMODE NT N-1 Adj. */
454 ret
= lgdt3306a_write_reg(state
, 0x0024, 0x5A);
458 /* AICCFIXFREQ0 NT N-1(Video rejection) */
459 ret
= lgdt3306a_write_reg(state
, 0x002e, 0x5A);
460 ret
= lgdt3306a_write_reg(state
, 0x002f, 0x00);
461 ret
= lgdt3306a_write_reg(state
, 0x0030, 0x00);
463 /* AICCFIXFREQ1 NT N-1(Audio rejection) */
464 ret
= lgdt3306a_write_reg(state
, 0x002b, 0x36);
465 ret
= lgdt3306a_write_reg(state
, 0x002c, 0x00);
466 ret
= lgdt3306a_write_reg(state
, 0x002d, 0x00);
468 /* AICCFIXFREQ2 NT Co-Channel(Video rejection) */
469 ret
= lgdt3306a_write_reg(state
, 0x0028, 0x2A);
470 ret
= lgdt3306a_write_reg(state
, 0x0029, 0x00);
471 ret
= lgdt3306a_write_reg(state
, 0x002a, 0x00);
473 /* AICCFIXFREQ3 NT Co-Channel(Audio rejection) */
474 ret
= lgdt3306a_write_reg(state
, 0x0025, 0x06);
475 ret
= lgdt3306a_write_reg(state
, 0x0026, 0x00);
476 ret
= lgdt3306a_write_reg(state
, 0x0027, 0x00);
479 ret
= lgdt3306a_read_reg(state
, 0x001e, &val
);
482 ret
= lgdt3306a_write_reg(state
, 0x001e, val
);
484 ret
= lgdt3306a_write_reg(state
, 0x0022, 0x08);
486 ret
= lgdt3306a_write_reg(state
, 0x0023, 0xFF);
488 ret
= lgdt3306a_read_reg(state
, 0x211f, &val
);
490 ret
= lgdt3306a_write_reg(state
, 0x211f, val
);
492 ret
= lgdt3306a_write_reg(state
, 0x2173, 0x01);
494 ret
= lgdt3306a_read_reg(state
, 0x1061, &val
);
497 ret
= lgdt3306a_write_reg(state
, 0x1061, val
);
499 ret
= lgdt3306a_read_reg(state
, 0x103d, &val
);
501 ret
= lgdt3306a_write_reg(state
, 0x103d, val
);
503 ret
= lgdt3306a_write_reg(state
, 0x2122, 0x40);
505 ret
= lgdt3306a_read_reg(state
, 0x2141, &val
);
507 ret
= lgdt3306a_write_reg(state
, 0x2141, val
);
509 ret
= lgdt3306a_read_reg(state
, 0x2135, &val
);
512 ret
= lgdt3306a_write_reg(state
, 0x2135, val
);
514 ret
= lgdt3306a_read_reg(state
, 0x0003, &val
);
516 ret
= lgdt3306a_write_reg(state
, 0x0003, val
);
518 ret
= lgdt3306a_read_reg(state
, 0x001c, &val
);
520 ret
= lgdt3306a_write_reg(state
, 0x001c, val
);
522 /* 6. EQ step size */
523 ret
= lgdt3306a_read_reg(state
, 0x2179, &val
);
525 ret
= lgdt3306a_write_reg(state
, 0x2179, val
);
527 ret
= lgdt3306a_read_reg(state
, 0x217a, &val
);
529 ret
= lgdt3306a_write_reg(state
, 0x217a, val
);
532 ret
= lgdt3306a_soft_reset(state
);
536 dbg_info("complete\n");
541 static int lgdt3306a_set_qam(struct lgdt3306a_state
*state
, int modulation
)
546 dbg_info("modulation=%d\n", modulation
);
548 /* 1. Selection of standard mode(0x08=QAM, 0x80=VSB) */
549 ret
= lgdt3306a_write_reg(state
, 0x0008, 0x08);
553 /* 1a. Spectrum inversion detection to Auto */
554 ret
= lgdt3306a_read_reg(state
, 0x0002, &val
);
555 val
&= 0xfb; /* SPECINV Off */
556 val
|= 0x08; /* SPECINVAUTO On */
557 ret
= lgdt3306a_write_reg(state
, 0x0002, val
);
561 /* 2. Bandwidth mode for QAM */
562 ret
= lgdt3306a_read_reg(state
, 0x0009, &val
);
563 val
&= 0xe3; /* STDOPDETTMODE[2:0]=0 VSB Off */
564 ret
= lgdt3306a_write_reg(state
, 0x0009, val
);
568 /* 3. : 64QAM/256QAM detection(manual, auto) */
569 ret
= lgdt3306a_read_reg(state
, 0x0009, &val
);
571 /* Check for forced Manual modulation modes; otherwise always "auto" */
572 if(forced_manual
&& (modulation
!= QAM_AUTO
)){
573 val
|= 0x01; /* STDOPDETCMODE[1:0]= 1=Manual */
575 val
|= 0x02; /* STDOPDETCMODE[1:0]= 2=Auto */
577 ret
= lgdt3306a_write_reg(state
, 0x0009, val
);
581 /* 3a. : 64QAM/256QAM selection for manual */
582 ret
= lgdt3306a_read_reg(state
, 0x101a, &val
);
584 if (modulation
== QAM_64
)
585 val
|= 0x02; /* QMDQMODE[2:0]=2=QAM64 */
587 val
|= 0x04; /* QMDQMODE[2:0]=4=QAM256 */
589 ret
= lgdt3306a_write_reg(state
, 0x101a, val
);
593 /* 4. ADC sampling frequency rate(4x sampling) */
594 ret
= lgdt3306a_read_reg(state
, 0x000d, &val
);
596 val
|= 0x40; /* SAMPLING4XFEN=1 */
597 ret
= lgdt3306a_write_reg(state
, 0x000d, val
);
601 /* 5. No AICC operation in QAM mode */
602 ret
= lgdt3306a_read_reg(state
, 0x0024, &val
);
604 ret
= lgdt3306a_write_reg(state
, 0x0024, val
);
608 /* 5.1 V0.36 SRDCHKALWAYS : For better QAM detection */
609 ret
= lgdt3306a_read_reg(state
, 0x000a, &val
);
612 ret
= lgdt3306a_write_reg(state
, 0x000a, val
);
616 /* 5.2 V0.36 Control of "no signal" detector function */
617 ret
= lgdt3306a_read_reg(state
, 0x2849, &val
);
619 ret
= lgdt3306a_write_reg(state
, 0x2849, val
);
623 /* 5.3 Fix for Blonder Tongue HDE-2H-QAM and AQM modulators */
624 ret
= lgdt3306a_read_reg(state
, 0x302b, &val
);
625 val
&= 0x7f; /* SELFSYNCFINDEN_CQS=0; disable auto reset */
626 ret
= lgdt3306a_write_reg(state
, 0x302b, val
);
631 ret
= lgdt3306a_soft_reset(state
);
635 dbg_info("complete\n");
640 static int lgdt3306a_set_modulation(struct lgdt3306a_state
*state
,
641 struct dtv_frontend_properties
*p
)
647 switch (p
->modulation
) {
649 ret
= lgdt3306a_set_vsb(state
);
654 ret
= lgdt3306a_set_qam(state
, p
->modulation
);
662 state
->current_modulation
= p
->modulation
;
668 /* ------------------------------------------------------------------------ */
670 static int lgdt3306a_agc_setup(struct lgdt3306a_state
*state
,
671 struct dtv_frontend_properties
*p
)
673 /* TODO: anything we want to do here??? */
676 switch (p
->modulation
) {
689 /* ------------------------------------------------------------------------ */
691 static int lgdt3306a_set_inversion(struct lgdt3306a_state
*state
,
696 dbg_info("(%d)\n", inversion
);
698 ret
= lgdt3306a_set_reg_bit(state
, 0x0002, 2, inversion
? 1 : 0);
702 static int lgdt3306a_set_inversion_auto(struct lgdt3306a_state
*state
,
707 dbg_info("(%d)\n", enabled
);
709 /* 0=Manual 1=Auto(QAM only) - SPECINVAUTO=0x04 */
710 ret
= lgdt3306a_set_reg_bit(state
, 0x0002, 3, enabled
);
714 static int lgdt3306a_spectral_inversion(struct lgdt3306a_state
*state
,
715 struct dtv_frontend_properties
*p
,
720 dbg_info("(%d)\n", inversion
);
723 * FGR - spectral_inversion defaults already set for VSB and QAM;
724 * can enable later if desired
727 ret
= lgdt3306a_set_inversion(state
, inversion
);
729 switch (p
->modulation
) {
731 /* Manual only for VSB */
732 ret
= lgdt3306a_set_inversion_auto(state
, 0);
737 /* Auto ok for QAM */
738 ret
= lgdt3306a_set_inversion_auto(state
, 1);
747 static int lgdt3306a_set_if(struct lgdt3306a_state
*state
,
748 struct dtv_frontend_properties
*p
)
754 switch (p
->modulation
) {
756 if_freq_khz
= state
->cfg
->vsb_if_khz
;
761 if_freq_khz
= state
->cfg
->qam_if_khz
;
767 switch (if_freq_khz
) {
769 pr_warn("IF=%d KHz is not supported, 3250 assumed\n",
772 case 3250: /* 3.25Mhz */
776 case 3500: /* 3.50Mhz */
780 case 4000: /* 4.00Mhz */
784 case 5000: /* 5.00Mhz */
788 case 5380: /* 5.38Mhz */
793 ret
= lgdt3306a_write_reg(state
, 0x0010, nco1
);
796 ret
= lgdt3306a_write_reg(state
, 0x0011, nco2
);
800 dbg_info("if_freq=%d KHz->[%04x]\n", if_freq_khz
, nco1
<<8 | nco2
);
805 /* ------------------------------------------------------------------------ */
807 static int lgdt3306a_i2c_gate_ctrl(struct dvb_frontend
*fe
, int enable
)
809 struct lgdt3306a_state
*state
= fe
->demodulator_priv
;
811 if (state
->cfg
->deny_i2c_rptr
) {
812 dbg_info("deny_i2c_rptr=%d\n", state
->cfg
->deny_i2c_rptr
);
815 dbg_info("(%d)\n", enable
);
818 return lgdt3306a_set_reg_bit(state
, 0x0002, 7, enable
? 0 : 1);
821 static int lgdt3306a_sleep(struct lgdt3306a_state
*state
)
826 state
->current_frequency
= -1; /* force re-tune, when we wake */
828 ret
= lgdt3306a_mpeg_tristate(state
, 1); /* disable data bus */
832 ret
= lgdt3306a_power(state
, 0); /* power down */
839 static int lgdt3306a_fe_sleep(struct dvb_frontend
*fe
)
841 struct lgdt3306a_state
*state
= fe
->demodulator_priv
;
843 return lgdt3306a_sleep(state
);
846 static int lgdt3306a_init(struct dvb_frontend
*fe
)
848 struct lgdt3306a_state
*state
= fe
->demodulator_priv
;
849 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
855 /* 1. Normal operation mode */
856 ret
= lgdt3306a_set_reg_bit(state
, 0x0001, 0, 1); /* SIMFASTENB=0x01 */
860 /* 2. Spectrum inversion auto detection (Not valid for VSB) */
861 ret
= lgdt3306a_set_inversion_auto(state
, 0);
865 /* 3. Spectrum inversion(According to the tuner configuration) */
866 ret
= lgdt3306a_set_inversion(state
, 1);
870 /* 4. Peak-to-peak voltage of ADC input signal */
872 /* ADCSEL1V=0x80=1Vpp; 0x00=2Vpp */
873 ret
= lgdt3306a_set_reg_bit(state
, 0x0004, 7, 1);
877 /* 5. ADC output data capture clock phase */
879 /* 0=same phase as ADC clock */
880 ret
= lgdt3306a_set_reg_bit(state
, 0x0004, 2, 0);
884 /* 5a. ADC sampling clock source */
886 /* ADCCLKPLLSEL=0x08; 0=use ext clock, not PLL */
887 ret
= lgdt3306a_set_reg_bit(state
, 0x0004, 3, 0);
891 /* 6. Automatic PLL set */
893 /* PLLSETAUTO=0x40; 0=off */
894 ret
= lgdt3306a_set_reg_bit(state
, 0x0005, 6, 0);
898 if (state
->cfg
->xtalMHz
== 24) { /* 24MHz */
899 /* 7. Frequency for PLL output(0x2564 for 192MHz for 24MHz) */
900 ret
= lgdt3306a_read_reg(state
, 0x0005, &val
);
905 ret
= lgdt3306a_write_reg(state
, 0x0005, val
);
908 ret
= lgdt3306a_write_reg(state
, 0x0006, 0x64);
912 /* 8. ADC sampling frequency(0x180000 for 24MHz sampling) */
913 ret
= lgdt3306a_read_reg(state
, 0x000d, &val
);
918 ret
= lgdt3306a_write_reg(state
, 0x000d, val
);
922 } else if (state
->cfg
->xtalMHz
== 25) { /* 25MHz */
923 /* 7. Frequency for PLL output */
924 ret
= lgdt3306a_read_reg(state
, 0x0005, &val
);
929 ret
= lgdt3306a_write_reg(state
, 0x0005, val
);
932 ret
= lgdt3306a_write_reg(state
, 0x0006, 0x64);
936 /* 8. ADC sampling frequency(0x190000 for 25MHz sampling) */
937 ret
= lgdt3306a_read_reg(state
, 0x000d, &val
);
942 ret
= lgdt3306a_write_reg(state
, 0x000d, val
);
946 pr_err("Bad xtalMHz=%d\n", state
->cfg
->xtalMHz
);
949 ret
= lgdt3306a_write_reg(state
, 0x000e, 0x00);
950 ret
= lgdt3306a_write_reg(state
, 0x000f, 0x00);
953 /* 9. Center frequency of input signal of ADC */
954 ret
= lgdt3306a_write_reg(state
, 0x0010, 0x34); /* 3.25MHz */
955 ret
= lgdt3306a_write_reg(state
, 0x0011, 0x00);
957 /* 10. Fixed gain error value */
958 ret
= lgdt3306a_write_reg(state
, 0x0014, 0); /* gain error=0 */
960 /* 10a. VSB TR BW gear shift initial step */
961 ret
= lgdt3306a_read_reg(state
, 0x103c, &val
);
963 val
|= 0x20; /* SAMGSAUTOSTL_V[3:0] = 2 */
964 ret
= lgdt3306a_write_reg(state
, 0x103c, val
);
966 /* 10b. Timing offset calibration in low temperature for VSB */
967 ret
= lgdt3306a_read_reg(state
, 0x103d, &val
);
970 ret
= lgdt3306a_write_reg(state
, 0x103d, val
);
972 /* 10c. Timing offset calibration in low temperature for QAM */
973 ret
= lgdt3306a_read_reg(state
, 0x1036, &val
);
976 ret
= lgdt3306a_write_reg(state
, 0x1036, val
);
978 /* 11. Using the imaginary part of CIR in CIR loading */
979 ret
= lgdt3306a_read_reg(state
, 0x211f, &val
);
980 val
&= 0xef; /* do not use imaginary of CIR */
981 ret
= lgdt3306a_write_reg(state
, 0x211f, val
);
983 /* 12. Control of no signal detector function */
984 ret
= lgdt3306a_read_reg(state
, 0x2849, &val
);
985 val
&= 0xef; /* NOUSENOSIGDET=0, enable no signal detector */
986 ret
= lgdt3306a_write_reg(state
, 0x2849, val
);
988 /* FGR - put demod in some known mode */
989 ret
= lgdt3306a_set_vsb(state
);
991 /* 13. TP stream format */
992 ret
= lgdt3306a_mpeg_mode(state
, state
->cfg
->mpeg_mode
);
994 /* 14. disable output buses */
995 ret
= lgdt3306a_mpeg_tristate(state
, 1);
997 /* 15. Sleep (in reset) */
998 ret
= lgdt3306a_sleep(state
);
1002 c
->cnr
.stat
[0].scale
= FE_SCALE_NOT_AVAILABLE
;
1008 static int lgdt3306a_set_parameters(struct dvb_frontend
*fe
)
1010 struct dtv_frontend_properties
*p
= &fe
->dtv_property_cache
;
1011 struct lgdt3306a_state
*state
= fe
->demodulator_priv
;
1014 dbg_info("(%d, %d)\n", p
->frequency
, p
->modulation
);
1016 if (state
->current_frequency
== p
->frequency
&&
1017 state
->current_modulation
== p
->modulation
) {
1018 dbg_info(" (already set, skipping ...)\n");
1021 state
->current_frequency
= -1;
1022 state
->current_modulation
= -1;
1024 ret
= lgdt3306a_power(state
, 1); /* power up */
1028 if (fe
->ops
.tuner_ops
.set_params
) {
1029 ret
= fe
->ops
.tuner_ops
.set_params(fe
);
1030 if (fe
->ops
.i2c_gate_ctrl
)
1031 fe
->ops
.i2c_gate_ctrl(fe
, 0);
1035 state
->current_frequency
= p
->frequency
;
1039 ret
= lgdt3306a_set_modulation(state
, p
);
1043 ret
= lgdt3306a_agc_setup(state
, p
);
1047 ret
= lgdt3306a_set_if(state
, p
);
1051 ret
= lgdt3306a_spectral_inversion(state
, p
,
1052 state
->cfg
->spectral_inversion
? 1 : 0);
1056 ret
= lgdt3306a_mpeg_mode(state
, state
->cfg
->mpeg_mode
);
1060 ret
= lgdt3306a_mpeg_mode_polarity(state
,
1061 state
->cfg
->tpclk_edge
,
1062 state
->cfg
->tpvalid_polarity
);
1066 ret
= lgdt3306a_mpeg_tristate(state
, 0); /* enable data bus */
1070 ret
= lgdt3306a_soft_reset(state
);
1075 lgdt3306a_DumpAllRegs(state
);
1077 state
->current_frequency
= p
->frequency
;
1082 static int lgdt3306a_get_frontend(struct dvb_frontend
*fe
,
1083 struct dtv_frontend_properties
*p
)
1085 struct lgdt3306a_state
*state
= fe
->demodulator_priv
;
1087 dbg_info("(%u, %d)\n",
1088 state
->current_frequency
, state
->current_modulation
);
1090 p
->modulation
= state
->current_modulation
;
1091 p
->frequency
= state
->current_frequency
;
1095 static enum dvbfe_algo
lgdt3306a_get_frontend_algo(struct dvb_frontend
*fe
)
1098 return DVBFE_ALGO_CUSTOM
;
1100 return DVBFE_ALGO_HW
;
1104 /* ------------------------------------------------------------------------ */
1105 static int lgdt3306a_monitor_vsb(struct lgdt3306a_state
*state
)
1109 u8 snrRef
, maxPowerMan
, nCombDet
;
1112 ret
= lgdt3306a_read_reg(state
, 0x21a1, &val
);
1115 snrRef
= val
& 0x3f;
1117 ret
= lgdt3306a_read_reg(state
, 0x2185, &maxPowerMan
);
1121 ret
= lgdt3306a_read_reg(state
, 0x2191, &val
);
1124 nCombDet
= (val
& 0x80) >> 7;
1126 ret
= lgdt3306a_read_reg(state
, 0x2180, &val
);
1129 fbDlyCir
= (val
& 0x03) << 8;
1131 ret
= lgdt3306a_read_reg(state
, 0x2181, &val
);
1136 dbg_info("snrRef=%d maxPowerMan=0x%x nCombDet=%d fbDlyCir=0x%x\n",
1137 snrRef
, maxPowerMan
, nCombDet
, fbDlyCir
);
1139 /* Carrier offset sub loop bandwidth */
1140 ret
= lgdt3306a_read_reg(state
, 0x1061, &val
);
1144 if ((snrRef
> 18) && (maxPowerMan
> 0x68)
1145 && (nCombDet
== 0x01)
1146 && ((fbDlyCir
== 0x03FF) || (fbDlyCir
< 0x6C))) {
1147 /* SNR is over 18dB and no ghosting */
1148 val
|= 0x00; /* final bandwidth = 0 */
1150 val
|= 0x04; /* final bandwidth = 4 */
1152 ret
= lgdt3306a_write_reg(state
, 0x1061, val
);
1156 /* Adjust Notch Filter */
1157 ret
= lgdt3306a_read_reg(state
, 0x0024, &val
);
1161 if (nCombDet
== 0) { /* Turn on the Notch Filter */
1164 ret
= lgdt3306a_write_reg(state
, 0x0024, val
);
1168 /* VSB Timing Recovery output normalization */
1169 ret
= lgdt3306a_read_reg(state
, 0x103d, &val
);
1174 ret
= lgdt3306a_write_reg(state
, 0x103d, val
);
1179 static enum lgdt3306a_modulation
1180 lgdt3306a_check_oper_mode(struct lgdt3306a_state
*state
)
1185 ret
= lgdt3306a_read_reg(state
, 0x0081, &val
);
1194 ret
= lgdt3306a_read_reg(state
, 0x00a6, &val
);
1199 dbg_info("QAM256\n");
1200 return LG3306_QAM256
;
1202 dbg_info("QAM64\n");
1203 return LG3306_QAM64
;
1206 pr_warn("UNKNOWN\n");
1207 return LG3306_UNKNOWN_MODE
;
1210 static enum lgdt3306a_lock_status
1211 lgdt3306a_check_lock_status(struct lgdt3306a_state
*state
,
1212 enum lgdt3306a_lock_check whatLock
)
1216 enum lgdt3306a_modulation modeOper
;
1217 enum lgdt3306a_lock_status lockStatus
;
1219 modeOper
= LG3306_UNKNOWN_MODE
;
1222 case LG3306_SYNC_LOCK
:
1224 ret
= lgdt3306a_read_reg(state
, 0x00a6, &val
);
1228 if ((val
& 0x80) == 0x80)
1229 lockStatus
= LG3306_LOCK
;
1231 lockStatus
= LG3306_UNLOCK
;
1233 dbg_info("SYNC_LOCK=%x\n", lockStatus
);
1236 case LG3306_AGC_LOCK
:
1238 ret
= lgdt3306a_read_reg(state
, 0x0080, &val
);
1242 if ((val
& 0x40) == 0x40)
1243 lockStatus
= LG3306_LOCK
;
1245 lockStatus
= LG3306_UNLOCK
;
1247 dbg_info("AGC_LOCK=%x\n", lockStatus
);
1250 case LG3306_TR_LOCK
:
1252 modeOper
= lgdt3306a_check_oper_mode(state
);
1253 if ((modeOper
== LG3306_QAM64
) || (modeOper
== LG3306_QAM256
)) {
1254 ret
= lgdt3306a_read_reg(state
, 0x1094, &val
);
1258 if ((val
& 0x80) == 0x80)
1259 lockStatus
= LG3306_LOCK
;
1261 lockStatus
= LG3306_UNLOCK
;
1263 lockStatus
= LG3306_UNKNOWN_LOCK
;
1265 dbg_info("TR_LOCK=%x\n", lockStatus
);
1268 case LG3306_FEC_LOCK
:
1270 modeOper
= lgdt3306a_check_oper_mode(state
);
1271 if ((modeOper
== LG3306_QAM64
) || (modeOper
== LG3306_QAM256
)) {
1272 ret
= lgdt3306a_read_reg(state
, 0x0080, &val
);
1276 if ((val
& 0x10) == 0x10)
1277 lockStatus
= LG3306_LOCK
;
1279 lockStatus
= LG3306_UNLOCK
;
1281 lockStatus
= LG3306_UNKNOWN_LOCK
;
1283 dbg_info("FEC_LOCK=%x\n", lockStatus
);
1288 lockStatus
= LG3306_UNKNOWN_LOCK
;
1289 pr_warn("UNKNOWN whatLock=%d\n", whatLock
);
1296 static enum lgdt3306a_neverlock_status
1297 lgdt3306a_check_neverlock_status(struct lgdt3306a_state
*state
)
1301 enum lgdt3306a_neverlock_status lockStatus
;
1303 ret
= lgdt3306a_read_reg(state
, 0x0080, &val
);
1306 lockStatus
= (enum lgdt3306a_neverlock_status
)(val
& 0x03);
1308 dbg_info("NeverLock=%d", lockStatus
);
1313 static int lgdt3306a_pre_monitoring(struct lgdt3306a_state
*state
)
1317 u8 currChDiffACQ
, snrRef
, mainStrong
, aiccrejStatus
;
1319 /* Channel variation */
1320 ret
= lgdt3306a_read_reg(state
, 0x21bc, &currChDiffACQ
);
1324 /* SNR of Frame sync */
1325 ret
= lgdt3306a_read_reg(state
, 0x21a1, &val
);
1328 snrRef
= val
& 0x3f;
1330 /* Strong Main CIR */
1331 ret
= lgdt3306a_read_reg(state
, 0x2199, &val
);
1334 mainStrong
= (val
& 0x40) >> 6;
1336 ret
= lgdt3306a_read_reg(state
, 0x0090, &val
);
1339 aiccrejStatus
= (val
& 0xf0) >> 4;
1341 dbg_info("snrRef=%d mainStrong=%d aiccrejStatus=%d currChDiffACQ=0x%x\n",
1342 snrRef
, mainStrong
, aiccrejStatus
, currChDiffACQ
);
1345 /* Dynamic ghost exists */
1346 if ((mainStrong
== 0) && (currChDiffACQ
> 0x70))
1348 if (mainStrong
== 0) {
1349 ret
= lgdt3306a_read_reg(state
, 0x2135, &val
);
1354 ret
= lgdt3306a_write_reg(state
, 0x2135, val
);
1358 ret
= lgdt3306a_read_reg(state
, 0x2141, &val
);
1363 ret
= lgdt3306a_write_reg(state
, 0x2141, val
);
1367 ret
= lgdt3306a_write_reg(state
, 0x2122, 0x70);
1370 } else { /* Weak ghost or static channel */
1371 ret
= lgdt3306a_read_reg(state
, 0x2135, &val
);
1376 ret
= lgdt3306a_write_reg(state
, 0x2135, val
);
1380 ret
= lgdt3306a_read_reg(state
, 0x2141, &val
);
1385 ret
= lgdt3306a_write_reg(state
, 0x2141, val
);
1389 ret
= lgdt3306a_write_reg(state
, 0x2122, 0x40);
1396 static enum lgdt3306a_lock_status
1397 lgdt3306a_sync_lock_poll(struct lgdt3306a_state
*state
)
1399 enum lgdt3306a_lock_status syncLockStatus
= LG3306_UNLOCK
;
1402 for (i
= 0; i
< 2; i
++) {
1405 syncLockStatus
= lgdt3306a_check_lock_status(state
,
1408 if (syncLockStatus
== LG3306_LOCK
) {
1409 dbg_info("locked(%d)\n", i
);
1413 dbg_info("not locked\n");
1414 return LG3306_UNLOCK
;
1417 static enum lgdt3306a_lock_status
1418 lgdt3306a_fec_lock_poll(struct lgdt3306a_state
*state
)
1420 enum lgdt3306a_lock_status FECLockStatus
= LG3306_UNLOCK
;
1423 for (i
= 0; i
< 2; i
++) {
1426 FECLockStatus
= lgdt3306a_check_lock_status(state
,
1429 if (FECLockStatus
== LG3306_LOCK
) {
1430 dbg_info("locked(%d)\n", i
);
1431 return FECLockStatus
;
1434 dbg_info("not locked\n");
1435 return FECLockStatus
;
1438 static enum lgdt3306a_neverlock_status
1439 lgdt3306a_neverlock_poll(struct lgdt3306a_state
*state
)
1441 enum lgdt3306a_neverlock_status NLLockStatus
= LG3306_NL_FAIL
;
1444 for (i
= 0; i
< 5; i
++) {
1447 NLLockStatus
= lgdt3306a_check_neverlock_status(state
);
1449 if (NLLockStatus
== LG3306_NL_LOCK
) {
1450 dbg_info("NL_LOCK(%d)\n", i
);
1451 return NLLockStatus
;
1454 dbg_info("NLLockStatus=%d\n", NLLockStatus
);
1455 return NLLockStatus
;
1458 static u8
lgdt3306a_get_packet_error(struct lgdt3306a_state
*state
)
1463 ret
= lgdt3306a_read_reg(state
, 0x00fa, &val
);
1470 static const u32 valx_x10
[] = {
1471 10, 11, 13, 15, 17, 20, 25, 33, 41, 50, 59, 73, 87, 100
1473 static const u32 log10x_x1000
[] = {
1474 0, 41, 114, 176, 230, 301, 398, 518, 613, 699, 771, 863, 939, 1000
1477 static u32
log10_x1000(u32 x
)
1479 u32 diff_val
, step_val
, step_log10
;
1484 return -1000000; /* signal error */
1487 return 0; /* log(1)=0 */
1494 } else { /* x > 10 */
1502 if (x
== 10) /* was our input an exact multiple of 10 */
1503 return log_val
; /* don't need to interpolate */
1505 /* find our place on the log curve */
1506 for (i
= 1; i
< ARRAY_SIZE(valx_x10
); i
++) {
1507 if (valx_x10
[i
] >= x
)
1510 if (i
== ARRAY_SIZE(valx_x10
))
1511 return log_val
+ log10x_x1000
[i
- 1];
1513 diff_val
= x
- valx_x10
[i
-1];
1514 step_val
= valx_x10
[i
] - valx_x10
[i
- 1];
1515 step_log10
= log10x_x1000
[i
] - log10x_x1000
[i
- 1];
1517 /* do a linear interpolation to get in-between values */
1518 return log_val
+ log10x_x1000
[i
- 1] +
1519 ((diff_val
*step_log10
) / step_val
);
1522 static u32
lgdt3306a_calculate_snr_x100(struct lgdt3306a_state
*state
)
1524 u32 mse
; /* Mean-Square Error */
1525 u32 pwr
; /* Constelation power */
1528 mse
= (read_reg(state
, 0x00ec) << 8) |
1529 (read_reg(state
, 0x00ed));
1530 pwr
= (read_reg(state
, 0x00e8) << 8) |
1531 (read_reg(state
, 0x00e9));
1533 if (mse
== 0) /* no signal */
1536 snr_x100
= log10_x1000((pwr
* 10000) / mse
) - 3000;
1537 dbg_info("mse=%u, pwr=%u, snr_x100=%d\n", mse
, pwr
, snr_x100
);
1542 static enum lgdt3306a_lock_status
1543 lgdt3306a_vsb_lock_poll(struct lgdt3306a_state
*state
)
1550 for (cnt
= 0; cnt
< 10; cnt
++) {
1551 if (lgdt3306a_sync_lock_poll(state
) == LG3306_UNLOCK
) {
1552 dbg_info("no sync lock!\n");
1553 return LG3306_UNLOCK
;
1557 ret
= lgdt3306a_pre_monitoring(state
);
1561 packet_error
= lgdt3306a_get_packet_error(state
);
1562 snr
= lgdt3306a_calculate_snr_x100(state
);
1563 dbg_info("cnt=%d errors=%d snr=%d\n", cnt
, packet_error
, snr
);
1565 if ((snr
>= 1500) && (packet_error
< 0xff))
1569 dbg_info("not locked!\n");
1570 return LG3306_UNLOCK
;
1573 static enum lgdt3306a_lock_status
1574 lgdt3306a_qam_lock_poll(struct lgdt3306a_state
*state
)
1580 for (cnt
= 0; cnt
< 10; cnt
++) {
1581 if (lgdt3306a_fec_lock_poll(state
) == LG3306_UNLOCK
) {
1582 dbg_info("no fec lock!\n");
1583 return LG3306_UNLOCK
;
1588 packet_error
= lgdt3306a_get_packet_error(state
);
1589 snr
= lgdt3306a_calculate_snr_x100(state
);
1590 dbg_info("cnt=%d errors=%d snr=%d\n", cnt
, packet_error
, snr
);
1592 if ((snr
>= 1500) && (packet_error
< 0xff))
1596 dbg_info("not locked!\n");
1597 return LG3306_UNLOCK
;
1600 static int lgdt3306a_read_status(struct dvb_frontend
*fe
,
1601 enum fe_status
*status
)
1603 struct lgdt3306a_state
*state
= fe
->demodulator_priv
;
1604 struct dtv_frontend_properties
*c
= &fe
->dtv_property_cache
;
1608 if (fe
->ops
.tuner_ops
.get_rf_strength
) {
1609 ret
= fe
->ops
.tuner_ops
.get_rf_strength(fe
, &strength
);
1611 dbg_info("strength=%d\n", strength
);
1613 dbg_info("fe->ops.tuner_ops.get_rf_strength() failed\n");
1617 if (lgdt3306a_neverlock_poll(state
) == LG3306_NL_LOCK
) {
1618 *status
|= FE_HAS_SIGNAL
;
1619 *status
|= FE_HAS_CARRIER
;
1621 switch (state
->current_modulation
) {
1625 if (lgdt3306a_qam_lock_poll(state
) == LG3306_LOCK
) {
1626 *status
|= FE_HAS_VITERBI
;
1627 *status
|= FE_HAS_SYNC
;
1629 *status
|= FE_HAS_LOCK
;
1633 if (lgdt3306a_vsb_lock_poll(state
) == LG3306_LOCK
) {
1634 *status
|= FE_HAS_VITERBI
;
1635 *status
|= FE_HAS_SYNC
;
1637 *status
|= FE_HAS_LOCK
;
1639 ret
= lgdt3306a_monitor_vsb(state
);
1646 if (*status
& FE_HAS_SYNC
) {
1648 c
->cnr
.stat
[0].scale
= FE_SCALE_DECIBEL
;
1649 c
->cnr
.stat
[0].svalue
= lgdt3306a_calculate_snr_x100(state
) * 10;
1652 c
->cnr
.stat
[0].scale
= FE_SCALE_NOT_AVAILABLE
;
1659 static int lgdt3306a_read_snr(struct dvb_frontend
*fe
, u16
*snr
)
1661 struct lgdt3306a_state
*state
= fe
->demodulator_priv
;
1663 state
->snr
= lgdt3306a_calculate_snr_x100(state
);
1664 /* report SNR in dB * 10 */
1665 *snr
= state
->snr
/10;
1670 static int lgdt3306a_read_signal_strength(struct dvb_frontend
*fe
,
1674 * Calculate some sort of "strength" from SNR
1676 struct lgdt3306a_state
*state
= fe
->demodulator_priv
;
1678 u16 snr
; /* snr_x10 */
1680 u32 ref_snr
; /* snr*100 */
1685 switch (state
->current_modulation
) {
1687 ref_snr
= 1600; /* 16dB */
1692 /* need to know actual modulation to set proper SNR baseline */
1693 ret
= lgdt3306a_read_reg(state
, 0x00a6, &val
);
1698 ref_snr
= 2800; /* QAM-256 28dB */
1700 ref_snr
= 2200; /* QAM-64 22dB */
1706 ret
= fe
->ops
.read_snr(fe
, &snr
);
1710 if (state
->snr
<= (ref_snr
- 100))
1712 else if (state
->snr
<= ref_snr
)
1713 str
= (0xffff * 65) / 100; /* 65% */
1715 str
= state
->snr
- ref_snr
;
1717 str
+= 78; /* 78%-100% */
1720 str
= (0xffff * str
) / 100;
1722 *strength
= (u16
)str
;
1723 dbg_info("strength=%u\n", *strength
);
1729 /* ------------------------------------------------------------------------ */
1731 static int lgdt3306a_read_ber(struct dvb_frontend
*fe
, u32
*ber
)
1733 struct lgdt3306a_state
*state
= fe
->demodulator_priv
;
1738 /* FGR - FIXME - I don't know what value is expected by dvb_core
1739 * what is the scale of the value?? */
1740 tmp
= read_reg(state
, 0x00fc); /* NBERVALUE[24-31] */
1741 tmp
= (tmp
<< 8) | read_reg(state
, 0x00fd); /* NBERVALUE[16-23] */
1742 tmp
= (tmp
<< 8) | read_reg(state
, 0x00fe); /* NBERVALUE[8-15] */
1743 tmp
= (tmp
<< 8) | read_reg(state
, 0x00ff); /* NBERVALUE[0-7] */
1745 dbg_info("ber=%u\n", tmp
);
1750 static int lgdt3306a_read_ucblocks(struct dvb_frontend
*fe
, u32
*ucblocks
)
1752 struct lgdt3306a_state
*state
= fe
->demodulator_priv
;
1756 /* FGR - FIXME - I don't know what value is expected by dvb_core
1757 * what happens when value wraps? */
1758 *ucblocks
= read_reg(state
, 0x00f4); /* TPIFTPERRCNT[0-7] */
1759 dbg_info("ucblocks=%u\n", *ucblocks
);
1765 static int lgdt3306a_tune(struct dvb_frontend
*fe
, bool re_tune
,
1766 unsigned int mode_flags
, unsigned int *delay
,
1767 enum fe_status
*status
)
1770 struct lgdt3306a_state
*state
= fe
->demodulator_priv
;
1772 dbg_info("re_tune=%u\n", re_tune
);
1775 state
->current_frequency
= -1; /* force re-tune */
1776 ret
= lgdt3306a_set_parameters(fe
);
1781 ret
= lgdt3306a_read_status(fe
, status
);
1786 static int lgdt3306a_get_tune_settings(struct dvb_frontend
*fe
,
1787 struct dvb_frontend_tune_settings
1790 fe_tune_settings
->min_delay_ms
= 100;
1795 static enum dvbfe_search
lgdt3306a_search(struct dvb_frontend
*fe
)
1797 enum fe_status status
= 0;
1801 ret
= lgdt3306a_set_parameters(fe
);
1805 ret
= lgdt3306a_read_status(fe
, &status
);
1809 /* check if we have a valid signal */
1810 if (status
& FE_HAS_LOCK
)
1811 return DVBFE_ALGO_SEARCH_SUCCESS
;
1813 return DVBFE_ALGO_SEARCH_AGAIN
;
1816 dbg_info("failed (%d)\n", ret
);
1817 return DVBFE_ALGO_SEARCH_ERROR
;
1820 static void lgdt3306a_release(struct dvb_frontend
*fe
)
1822 struct lgdt3306a_state
*state
= fe
->demodulator_priv
;
1828 static const struct dvb_frontend_ops lgdt3306a_ops
;
1830 struct dvb_frontend
*lgdt3306a_attach(const struct lgdt3306a_config
*config
,
1831 struct i2c_adapter
*i2c_adap
)
1833 struct lgdt3306a_state
*state
= NULL
;
1837 dbg_info("(%d-%04x)\n",
1838 i2c_adap
? i2c_adapter_id(i2c_adap
) : 0,
1839 config
? config
->i2c_addr
: 0);
1841 state
= kzalloc(sizeof(struct lgdt3306a_state
), GFP_KERNEL
);
1845 state
->cfg
= config
;
1846 state
->i2c_adap
= i2c_adap
;
1848 memcpy(&state
->frontend
.ops
, &lgdt3306a_ops
,
1849 sizeof(struct dvb_frontend_ops
));
1850 state
->frontend
.demodulator_priv
= state
;
1852 /* verify that we're talking to a lg3306a */
1853 /* FGR - NOTE - there is no obvious ChipId to check; we check
1854 * some "known" bits after reset, but it's still just a guess */
1855 ret
= lgdt3306a_read_reg(state
, 0x0000, &val
);
1858 if ((val
& 0x74) != 0x74) {
1859 pr_warn("expected 0x74, got 0x%x\n", (val
& 0x74));
1861 /* FIXME - re-enable when we know this is right */
1865 ret
= lgdt3306a_read_reg(state
, 0x0001, &val
);
1868 if ((val
& 0xf6) != 0xc6) {
1869 pr_warn("expected 0xc6, got 0x%x\n", (val
& 0xf6));
1871 /* FIXME - re-enable when we know this is right */
1875 ret
= lgdt3306a_read_reg(state
, 0x0002, &val
);
1878 if ((val
& 0x73) != 0x03) {
1879 pr_warn("expected 0x03, got 0x%x\n", (val
& 0x73));
1881 /* FIXME - re-enable when we know this is right */
1886 state
->current_frequency
= -1;
1887 state
->current_modulation
= -1;
1889 lgdt3306a_sleep(state
);
1891 return &state
->frontend
;
1894 pr_warn("unable to detect LGDT3306A hardware\n");
1898 EXPORT_SYMBOL(lgdt3306a_attach
);
1902 static const short regtab
[] = {
1903 0x0000, /* SOFTRSTB 1'b1 1'b1 1'b1 ADCPDB 1'b1 PLLPDB GBBPDB 11111111 */
1904 0x0001, /* 1'b1 1'b1 1'b0 1'b0 AUTORPTRS */
1905 0x0002, /* NI2CRPTEN 1'b0 1'b0 1'b0 SPECINVAUT */
1906 0x0003, /* AGCRFOUT */
1907 0x0004, /* ADCSEL1V ADCCNT ADCCNF ADCCNS ADCCLKPLL */
1908 0x0005, /* PLLINDIVSE */
1909 0x0006, /* PLLCTRL[7:0] 11100001 */
1910 0x0007, /* SYSINITWAITTIME[7:0] (msec) 00001000 */
1911 0x0008, /* STDOPMODE[7:0] 10000000 */
1912 0x0009, /* 1'b0 1'b0 1'b0 STDOPDETTMODE[2:0] STDOPDETCMODE[1:0] 00011110 */
1913 0x000a, /* DAFTEN 1'b1 x x SCSYSLOCK */
1914 0x000b, /* SCSYSLOCKCHKTIME[7:0] (10msec) 01100100 */
1915 0x000d, /* x SAMPLING4 */
1916 0x000e, /* SAMFREQ[15:8] 00000000 */
1917 0x000f, /* SAMFREQ[7:0] 00000000 */
1918 0x0010, /* IFFREQ[15:8] 01100000 */
1919 0x0011, /* IFFREQ[7:0] 00000000 */
1920 0x0012, /* AGCEN AGCREFMO */
1921 0x0013, /* AGCRFFIXB AGCIFFIXB AGCLOCKDETRNGSEL[1:0] 1'b1 1'b0 1'b0 1'b0 11101000 */
1922 0x0014, /* AGCFIXVALUE[7:0] 01111111 */
1923 0x0015, /* AGCREF[15:8] 00001010 */
1924 0x0016, /* AGCREF[7:0] 11100100 */
1925 0x0017, /* AGCDELAY[7:0] 00100000 */
1926 0x0018, /* AGCRFBW[3:0] AGCIFBW[3:0] 10001000 */
1927 0x0019, /* AGCUDOUTMODE[1:0] AGCUDCTRLLEN[1:0] AGCUDCTRL */
1928 0x001c, /* 1'b1 PFEN MFEN AICCVSYNC */
1929 0x001d, /* 1'b0 1'b1 1'b0 1'b1 AICCVSYNC */
1930 0x001e, /* AICCALPHA[3:0] 1'b1 1'b0 1'b1 1'b0 01111010 */
1931 0x001f, /* AICCDETTH[19:16] AICCOFFTH[19:16] 00000000 */
1932 0x0020, /* AICCDETTH[15:8] 01111100 */
1933 0x0021, /* AICCDETTH[7:0] 00000000 */
1934 0x0022, /* AICCOFFTH[15:8] 00000101 */
1935 0x0023, /* AICCOFFTH[7:0] 11100000 */
1936 0x0024, /* AICCOPMODE3[1:0] AICCOPMODE2[1:0] AICCOPMODE1[1:0] AICCOPMODE0[1:0] 00000000 */
1937 0x0025, /* AICCFIXFREQ3[23:16] 00000000 */
1938 0x0026, /* AICCFIXFREQ3[15:8] 00000000 */
1939 0x0027, /* AICCFIXFREQ3[7:0] 00000000 */
1940 0x0028, /* AICCFIXFREQ2[23:16] 00000000 */
1941 0x0029, /* AICCFIXFREQ2[15:8] 00000000 */
1942 0x002a, /* AICCFIXFREQ2[7:0] 00000000 */
1943 0x002b, /* AICCFIXFREQ1[23:16] 00000000 */
1944 0x002c, /* AICCFIXFREQ1[15:8] 00000000 */
1945 0x002d, /* AICCFIXFREQ1[7:0] 00000000 */
1946 0x002e, /* AICCFIXFREQ0[23:16] 00000000 */
1947 0x002f, /* AICCFIXFREQ0[15:8] 00000000 */
1948 0x0030, /* AICCFIXFREQ0[7:0] 00000000 */
1949 0x0031, /* 1'b0 1'b1 1'b0 1'b0 x DAGC1STER */
1950 0x0032, /* DAGC1STEN DAGC1STER */
1951 0x0033, /* DAGC1STREF[15:8] 00001010 */
1952 0x0034, /* DAGC1STREF[7:0] 11100100 */
1953 0x0035, /* DAGC2NDE */
1954 0x0036, /* DAGC2NDREF[15:8] 00001010 */
1955 0x0037, /* DAGC2NDREF[7:0] 10000000 */
1956 0x0038, /* DAGC2NDLOCKDETRNGSEL[1:0] */
1957 0x003d, /* 1'b1 SAMGEARS */
1958 0x0040, /* SAMLFGMA */
1959 0x0041, /* SAMLFBWM */
1960 0x0044, /* 1'b1 CRGEARSHE */
1961 0x0045, /* CRLFGMAN */
1962 0x0046, /* CFLFBWMA */
1963 0x0047, /* CRLFGMAN */
1964 0x0048, /* x x x x CRLFGSTEP_VS[3:0] xxxx1001 */
1965 0x0049, /* CRLFBWMA */
1966 0x004a, /* CRLFBWMA */
1967 0x0050, /* 1'b0 1'b1 1'b1 1'b0 MSECALCDA */
1968 0x0070, /* TPOUTEN TPIFEN TPCLKOUTE */
1969 0x0071, /* TPSENB TPSSOPBITE */
1970 0x0073, /* TP47HINS x x CHBERINT PERMODE[1:0] PERINT[1:0] 1xx11100 */
1971 0x0075, /* x x x x x IQSWAPCTRL[2:0] xxxxx000 */
1972 0x0076, /* NBERCON NBERST NBERPOL NBERWSYN */
1973 0x0077, /* x NBERLOSTTH[2:0] NBERACQTH[3:0] x0000000 */
1974 0x0078, /* NBERPOLY[31:24] 00000000 */
1975 0x0079, /* NBERPOLY[23:16] 00000000 */
1976 0x007a, /* NBERPOLY[15:8] 00000000 */
1977 0x007b, /* NBERPOLY[7:0] 00000000 */
1978 0x007c, /* NBERPED[31:24] 00000000 */
1979 0x007d, /* NBERPED[23:16] 00000000 */
1980 0x007e, /* NBERPED[15:8] 00000000 */
1981 0x007f, /* NBERPED[7:0] 00000000 */
1982 0x0080, /* x AGCLOCK DAGCLOCK SYSLOCK x x NEVERLOCK[1:0] */
1983 0x0085, /* SPECINVST */
1984 0x0088, /* SYSLOCKTIME[15:8] */
1985 0x0089, /* SYSLOCKTIME[7:0] */
1986 0x008c, /* FECLOCKTIME[15:8] */
1987 0x008d, /* FECLOCKTIME[7:0] */
1988 0x008e, /* AGCACCOUT[15:8] */
1989 0x008f, /* AGCACCOUT[7:0] */
1990 0x0090, /* AICCREJSTATUS[3:0] AICCREJBUSY[3:0] */
1991 0x0091, /* AICCVSYNC */
1992 0x009c, /* CARRFREQOFFSET[15:8] */
1993 0x009d, /* CARRFREQOFFSET[7:0] */
1994 0x00a1, /* SAMFREQOFFSET[23:16] */
1995 0x00a2, /* SAMFREQOFFSET[15:8] */
1996 0x00a3, /* SAMFREQOFFSET[7:0] */
1997 0x00a6, /* SYNCLOCK SYNCLOCKH */
1998 #if 0 /* covered elsewhere */
1999 0x00e8, /* CONSTPWR[15:8] */
2000 0x00e9, /* CONSTPWR[7:0] */
2001 0x00ea, /* BMSE[15:8] */
2002 0x00eb, /* BMSE[7:0] */
2003 0x00ec, /* MSE[15:8] */
2004 0x00ed, /* MSE[7:0] */
2005 0x00ee, /* CONSTI[7:0] */
2006 0x00ef, /* CONSTQ[7:0] */
2008 0x00f4, /* TPIFTPERRCNT[7:0] */
2009 0x00f5, /* TPCORREC */
2010 0x00f6, /* VBBER[15:8] */
2011 0x00f7, /* VBBER[7:0] */
2012 0x00f8, /* VABER[15:8] */
2013 0x00f9, /* VABER[7:0] */
2014 0x00fa, /* TPERRCNT[7:0] */
2015 0x00fb, /* NBERLOCK x x x x x x x */
2016 0x00fc, /* NBERVALUE[31:24] */
2017 0x00fd, /* NBERVALUE[23:16] */
2018 0x00fe, /* NBERVALUE[15:8] */
2019 0x00ff, /* NBERVALUE[7:0] */
2020 0x1000, /* 1'b0 WODAGCOU */
2021 0x1005, /* x x 1'b1 1'b1 x SRD_Q_QM */
2022 0x1009, /* SRDWAITTIME[7:0] (10msec) 00100011 */
2023 0x100a, /* SRDWAITTIME_CQS[7:0] (msec) 01100100 */
2024 0x101a, /* x 1'b1 1'b0 1'b0 x QMDQAMMODE[2:0] x100x010 */
2025 0x1036, /* 1'b0 1'b1 1'b0 1'b0 SAMGSEND_CQS[3:0] 01001110 */
2026 0x103c, /* SAMGSAUTOSTL_V[3:0] SAMGSAUTOEDL_V[3:0] 01000110 */
2027 0x103d, /* 1'b1 1'b1 SAMCNORMBP_V[1:0] 1'b0 1'b0 SAMMODESEL_V[1:0] 11100001 */
2028 0x103f, /* SAMZTEDSE */
2029 0x105d, /* EQSTATUSE */
2030 0x105f, /* x PMAPG2_V[2:0] x DMAPG2_V[2:0] x001x011 */
2031 0x1060, /* 1'b1 EQSTATUSE */
2032 0x1061, /* CRMAPBWSTL_V[3:0] CRMAPBWEDL_V[3:0] 00000100 */
2033 0x1065, /* 1'b0 x CRMODE_V[1:0] 1'b1 x 1'b1 x 0x111x1x */
2034 0x1066, /* 1'b0 1'b0 1'b1 1'b0 1'b1 PNBOOSTSE */
2035 0x1068, /* CREPHNGAIN2_V[3:0] CREPHNPBW_V[3:0] 10010001 */
2036 0x106e, /* x x x x x CREPHNEN_ */
2037 0x106f, /* CREPHNTH_V[7:0] 00010101 */
2038 0x1072, /* CRSWEEPN */
2039 0x1073, /* CRPGAIN_V[3:0] x x 1'b1 1'b1 1001xx11 */
2040 0x1074, /* CRPBW_V[3:0] x x 1'b1 1'b1 0001xx11 */
2041 0x1080, /* DAFTSTATUS[1:0] x x x x x x */
2042 0x1081, /* SRDSTATUS[1:0] x x x x x SRDLOCK */
2043 0x10a9, /* EQSTATUS_CQS[1:0] x x x x x x */
2044 0x10b7, /* EQSTATUS_V[1:0] x x x x x x */
2045 #if 0 /* SMART_ANT */
2046 0x1f00, /* MODEDETE */
2047 0x1f01, /* x x x x x x x SFNRST xxxxxxx0 */
2048 0x1f03, /* NUMOFANT[7:0] 10000000 */
2049 0x1f04, /* x SELMASK[6:0] x0000000 */
2050 0x1f05, /* x SETMASK[6:0] x0000000 */
2051 0x1f06, /* x TXDATA[6:0] x0000000 */
2052 0x1f07, /* x CHNUMBER[6:0] x0000000 */
2053 0x1f09, /* AGCTIME[23:16] 10011000 */
2054 0x1f0a, /* AGCTIME[15:8] 10010110 */
2055 0x1f0b, /* AGCTIME[7:0] 10000000 */
2056 0x1f0c, /* ANTTIME[31:24] 00000000 */
2057 0x1f0d, /* ANTTIME[23:16] 00000011 */
2058 0x1f0e, /* ANTTIME[15:8] 10010000 */
2059 0x1f0f, /* ANTTIME[7:0] 10010000 */
2060 0x1f11, /* SYNCTIME[23:16] 10011000 */
2061 0x1f12, /* SYNCTIME[15:8] 10010110 */
2062 0x1f13, /* SYNCTIME[7:0] 10000000 */
2063 0x1f14, /* SNRTIME[31:24] 00000001 */
2064 0x1f15, /* SNRTIME[23:16] 01111101 */
2065 0x1f16, /* SNRTIME[15:8] 01111000 */
2066 0x1f17, /* SNRTIME[7:0] 01000000 */
2067 0x1f19, /* FECTIME[23:16] 00000000 */
2068 0x1f1a, /* FECTIME[15:8] 01110010 */
2069 0x1f1b, /* FECTIME[7:0] 01110000 */
2070 0x1f1d, /* FECTHD[7:0] 00000011 */
2071 0x1f1f, /* SNRTHD[23:16] 00001000 */
2072 0x1f20, /* SNRTHD[15:8] 01111111 */
2073 0x1f21, /* SNRTHD[7:0] 10000101 */
2074 0x1f80, /* IRQFLG x x SFSDRFLG MODEBFLG SAVEFLG SCANFLG TRACKFLG */
2075 0x1f81, /* x SYNCCON SNRCON FECCON x STDBUSY SYNCRST AGCFZCO */
2076 0x1f82, /* x x x SCANOPCD[4:0] */
2077 0x1f83, /* x x x x MAINOPCD[3:0] */
2078 0x1f84, /* x x RXDATA[13:8] */
2079 0x1f85, /* RXDATA[7:0] */
2080 0x1f86, /* x x SDTDATA[13:8] */
2081 0x1f87, /* SDTDATA[7:0] */
2082 0x1f89, /* ANTSNR[23:16] */
2083 0x1f8a, /* ANTSNR[15:8] */
2084 0x1f8b, /* ANTSNR[7:0] */
2085 0x1f8c, /* x x x x ANTFEC[13:8] */
2086 0x1f8d, /* ANTFEC[7:0] */
2087 0x1f8e, /* MAXCNT[7:0] */
2088 0x1f8f, /* SCANCNT[7:0] */
2089 0x1f91, /* MAXPW[23:16] */
2090 0x1f92, /* MAXPW[15:8] */
2091 0x1f93, /* MAXPW[7:0] */
2092 0x1f95, /* CURPWMSE[23:16] */
2093 0x1f96, /* CURPWMSE[15:8] */
2094 0x1f97, /* CURPWMSE[7:0] */
2095 #endif /* SMART_ANT */
2096 0x211f, /* 1'b1 1'b1 1'b1 CIRQEN x x 1'b0 1'b0 1111xx00 */
2097 0x212a, /* EQAUTOST */
2098 0x2122, /* CHFAST[7:0] 01100000 */
2099 0x212b, /* FFFSTEP_V[3:0] x FBFSTEP_V[2:0] 0001x001 */
2100 0x212c, /* PHDEROTBWSEL[3:0] 1'b1 1'b1 1'b1 1'b0 10001110 */
2101 0x212d, /* 1'b1 1'b1 1'b1 1'b1 x x TPIFLOCKS */
2102 0x2135, /* DYNTRACKFDEQ[3:0] x 1'b0 1'b0 1'b0 1010x000 */
2103 0x2141, /* TRMODE[1:0] 1'b1 1'b1 1'b0 1'b1 1'b1 1'b1 01110111 */
2104 0x2162, /* AICCCTRLE */
2105 0x2173, /* PHNCNFCNT[7:0] 00000100 */
2106 0x2179, /* 1'b0 1'b0 1'b0 1'b1 x BADSINGLEDYNTRACKFBF[2:0] 0001x001 */
2107 0x217a, /* 1'b0 1'b0 1'b0 1'b1 x BADSLOWSINGLEDYNTRACKFBF[2:0] 0001x001 */
2108 0x217e, /* CNFCNTTPIF[7:0] 00001000 */
2109 0x217f, /* TPERRCNTTPIF[7:0] 00000001 */
2110 0x2180, /* x x x x x x FBDLYCIR[9:8] */
2111 0x2181, /* FBDLYCIR[7:0] */
2112 0x2185, /* MAXPWRMAIN[7:0] */
2113 0x2191, /* NCOMBDET x x x x x x x */
2114 0x2199, /* x MAINSTRON */
2115 0x219a, /* FFFEQSTEPOUT_V[3:0] FBFSTEPOUT_V[2:0] */
2116 0x21a1, /* x x SNRREF[5:0] */
2117 0x2845, /* 1'b0 1'b1 x x FFFSTEP_CQS[1:0] FFFCENTERTAP[1:0] 01xx1110 */
2118 0x2846, /* 1'b0 x 1'b0 1'b1 FBFSTEP_CQS[1:0] 1'b1 1'b0 0x011110 */
2119 0x2847, /* ENNOSIGDE */
2120 0x2849, /* 1'b1 1'b1 NOUSENOSI */
2121 0x284a, /* EQINITWAITTIME[7:0] 01100100 */
2122 0x3000, /* 1'b1 1'b1 1'b1 x x x 1'b0 RPTRSTM */
2123 0x3001, /* RPTRSTWAITTIME[7:0] (100msec) 00110010 */
2124 0x3031, /* FRAMELOC */
2125 0x3032, /* 1'b1 1'b0 1'b0 1'b0 x x FRAMELOCKMODE_CQS[1:0] 1000xx11 */
2126 0x30a9, /* VDLOCK_Q FRAMELOCK */
2127 0x30aa, /* MPEGLOCK */
2130 #define numDumpRegs (ARRAY_SIZE(regtab))
2131 static u8 regval1
[numDumpRegs
] = {0, };
2132 static u8 regval2
[numDumpRegs
] = {0, };
2134 static void lgdt3306a_DumpAllRegs(struct lgdt3306a_state
*state
)
2136 memset(regval2
, 0xff, sizeof(regval2
));
2137 lgdt3306a_DumpRegs(state
);
2140 static void lgdt3306a_DumpRegs(struct lgdt3306a_state
*state
)
2143 int sav_debug
= debug
;
2145 if ((debug
& DBG_DUMP
) == 0)
2147 debug
&= ~DBG_REG
; /* suppress DBG_REG during reg dump */
2151 for (i
= 0; i
< numDumpRegs
; i
++) {
2152 lgdt3306a_read_reg(state
, regtab
[i
], ®val1
[i
]);
2153 if (regval1
[i
] != regval2
[i
]) {
2154 lg_debug(" %04X = %02X\n", regtab
[i
], regval1
[i
]);
2155 regval2
[i
] = regval1
[i
];
2160 #endif /* DBG_DUMP */
2164 static const struct dvb_frontend_ops lgdt3306a_ops
= {
2165 .delsys
= { SYS_ATSC
, SYS_DVBC_ANNEX_B
},
2167 .name
= "LG Electronics LGDT3306A VSB/QAM Frontend",
2168 .frequency_min_hz
= 54 * MHz
,
2169 .frequency_max_hz
= 858 * MHz
,
2170 .frequency_stepsize_hz
= 62500,
2171 .caps
= FE_CAN_QAM_AUTO
| FE_CAN_QAM_64
| FE_CAN_QAM_256
| FE_CAN_8VSB
2173 .i2c_gate_ctrl
= lgdt3306a_i2c_gate_ctrl
,
2174 .init
= lgdt3306a_init
,
2175 .sleep
= lgdt3306a_fe_sleep
,
2176 /* if this is set, it overrides the default swzigzag */
2177 .tune
= lgdt3306a_tune
,
2178 .set_frontend
= lgdt3306a_set_parameters
,
2179 .get_frontend
= lgdt3306a_get_frontend
,
2180 .get_frontend_algo
= lgdt3306a_get_frontend_algo
,
2181 .get_tune_settings
= lgdt3306a_get_tune_settings
,
2182 .read_status
= lgdt3306a_read_status
,
2183 .read_ber
= lgdt3306a_read_ber
,
2184 .read_signal_strength
= lgdt3306a_read_signal_strength
,
2185 .read_snr
= lgdt3306a_read_snr
,
2186 .read_ucblocks
= lgdt3306a_read_ucblocks
,
2187 .release
= lgdt3306a_release
,
2188 .ts_bus_ctrl
= lgdt3306a_ts_bus_ctrl
,
2189 .search
= lgdt3306a_search
,
2192 static int lgdt3306a_select(struct i2c_mux_core
*muxc
, u32 chan
)
2194 struct i2c_client
*client
= i2c_mux_priv(muxc
);
2195 struct lgdt3306a_state
*state
= i2c_get_clientdata(client
);
2197 return lgdt3306a_i2c_gate_ctrl(&state
->frontend
, 1);
2200 static int lgdt3306a_deselect(struct i2c_mux_core
*muxc
, u32 chan
)
2202 struct i2c_client
*client
= i2c_mux_priv(muxc
);
2203 struct lgdt3306a_state
*state
= i2c_get_clientdata(client
);
2205 return lgdt3306a_i2c_gate_ctrl(&state
->frontend
, 0);
2208 static int lgdt3306a_probe(struct i2c_client
*client
,
2209 const struct i2c_device_id
*id
)
2211 struct lgdt3306a_config
*config
;
2212 struct lgdt3306a_state
*state
;
2213 struct dvb_frontend
*fe
;
2216 config
= kmemdup(client
->dev
.platform_data
,
2217 sizeof(struct lgdt3306a_config
), GFP_KERNEL
);
2218 if (config
== NULL
) {
2223 config
->i2c_addr
= client
->addr
;
2224 fe
= lgdt3306a_attach(config
, client
->adapter
);
2230 i2c_set_clientdata(client
, fe
->demodulator_priv
);
2231 state
= fe
->demodulator_priv
;
2232 state
->frontend
.ops
.release
= NULL
;
2234 /* create mux i2c adapter for tuner */
2235 state
->muxc
= i2c_mux_alloc(client
->adapter
, &client
->dev
,
2236 1, 0, I2C_MUX_LOCKED
,
2237 lgdt3306a_select
, lgdt3306a_deselect
);
2242 state
->muxc
->priv
= client
;
2243 ret
= i2c_mux_add_adapter(state
->muxc
, 0, 0, 0);
2247 /* create dvb_frontend */
2248 fe
->ops
.i2c_gate_ctrl
= NULL
;
2249 *config
->i2c_adapter
= state
->muxc
->adapter
[0];
2252 dev_info(&client
->dev
, "LG Electronics LGDT3306A successfully identified\n");
2261 dev_warn(&client
->dev
, "probe failed = %d\n", ret
);
2265 static int lgdt3306a_remove(struct i2c_client
*client
)
2267 struct lgdt3306a_state
*state
= i2c_get_clientdata(client
);
2269 i2c_mux_del_adapters(state
->muxc
);
2271 state
->frontend
.ops
.release
= NULL
;
2272 state
->frontend
.demodulator_priv
= NULL
;
2280 static const struct i2c_device_id lgdt3306a_id_table
[] = {
2284 MODULE_DEVICE_TABLE(i2c
, lgdt3306a_id_table
);
2286 static struct i2c_driver lgdt3306a_driver
= {
2288 .name
= "lgdt3306a",
2289 .suppress_bind_attrs
= true,
2291 .probe
= lgdt3306a_probe
,
2292 .remove
= lgdt3306a_remove
,
2293 .id_table
= lgdt3306a_id_table
,
2296 module_i2c_driver(lgdt3306a_driver
);
2298 MODULE_DESCRIPTION("LG Electronics LGDT3306A ATSC/QAM-B Demodulator Driver");
2299 MODULE_AUTHOR("Fred Richter <frichter@hauppauge.com>");
2300 MODULE_LICENSE("GPL");
2301 MODULE_VERSION("0.2");