2 * wm8961.c -- WM8961 ALSA SoC Audio driver
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
10 * Currently unimplemented features:
14 #include <linux/module.h>
15 #include <linux/moduleparam.h>
16 #include <linux/init.h>
17 #include <linux/delay.h>
19 #include <linux/i2c.h>
20 #include <linux/platform_device.h>
21 #include <sound/core.h>
22 #include <sound/pcm.h>
23 #include <sound/pcm_params.h>
24 #include <sound/soc.h>
25 #include <sound/soc-dapm.h>
26 #include <sound/initval.h>
27 #include <sound/tlv.h>
31 #define WM8961_MAX_REGISTER 0xFC
33 static u16 wm8961_reg_defaults[] = {
34 0x009F, /* R0 - Left Input volume */
35 0x009F, /* R1 - Right Input volume */
36 0x0000, /* R2 - LOUT1 volume */
37 0x0000, /* R3 - ROUT1 volume */
38 0x0020, /* R4 - Clocking1 */
39 0x0008, /* R5 - ADC & DAC Control 1 */
40 0x0000, /* R6 - ADC & DAC Control 2 */
41 0x000A, /* R7 - Audio Interface 0 */
42 0x01F4, /* R8 - Clocking2 */
43 0x0000, /* R9 - Audio Interface 1 */
44 0x00FF, /* R10 - Left DAC volume */
45 0x00FF, /* R11 - Right DAC volume */
48 0x0040, /* R14 - Audio Interface 2 */
49 0x0000, /* R15 - Software Reset */
51 0x007B, /* R17 - ALC1 */
52 0x0000, /* R18 - ALC2 */
53 0x0032, /* R19 - ALC3 */
54 0x0000, /* R20 - Noise Gate */
55 0x00C0, /* R21 - Left ADC volume */
56 0x00C0, /* R22 - Right ADC volume */
57 0x0120, /* R23 - Additional control(1) */
58 0x0000, /* R24 - Additional control(2) */
59 0x0000, /* R25 - Pwr Mgmt (1) */
60 0x0000, /* R26 - Pwr Mgmt (2) */
61 0x0000, /* R27 - Additional Control (3) */
62 0x0000, /* R28 - Anti-pop */
64 0x005F, /* R30 - Clocking 3 */
66 0x0000, /* R32 - ADCL signal path */
67 0x0000, /* R33 - ADCR signal path */
74 0x0000, /* R40 - LOUT2 volume */
75 0x0000, /* R41 - ROUT2 volume */
81 0x0000, /* R47 - Pwr Mgmt (3) */
82 0x0023, /* R48 - Additional Control (4) */
83 0x0000, /* R49 - Class D Control 1 */
85 0x0003, /* R51 - Class D Control 2 */
90 0x0106, /* R56 - Clocking 4 */
91 0x0000, /* R57 - DSP Sidetone 0 */
92 0x0000, /* R58 - DSP Sidetone 1 */
94 0x0000, /* R60 - DC Servo 0 */
95 0x0000, /* R61 - DC Servo 1 */
97 0x015E, /* R63 - DC Servo 3 */
99 0x0010, /* R65 - DC Servo 5 */
102 0x0003, /* R68 - Analogue PGA Bias */
103 0x0000, /* R69 - Analogue HP 0 */
105 0x01FB, /* R71 - Analogue HP 2 */
106 0x0000, /* R72 - Charge Pump 1 */
116 0x0000, /* R82 - Charge Pump B */
121 0x0000, /* R87 - Write Sequencer 1 */
122 0x0000, /* R88 - Write Sequencer 2 */
123 0x0000, /* R89 - Write Sequencer 3 */
124 0x0000, /* R90 - Write Sequencer 4 */
125 0x0000, /* R91 - Write Sequencer 5 */
126 0x0000, /* R92 - Write Sequencer 6 */
127 0x0000, /* R93 - Write Sequencer 7 */
286 0x0001, /* R252 - General test 1 */
290 struct snd_soc_codec codec;
292 u16 reg_cache[WM8961_MAX_REGISTER];
295 static int wm8961_volatile_register(unsigned int reg)
298 case WM8961_SOFTWARE_RESET:
299 case WM8961_WRITE_SEQUENCER_7:
300 case WM8961_DC_SERVO_1:
308 static int wm8961_reset(struct snd_soc_codec *codec)
310 return snd_soc_write(codec, WM8961_SOFTWARE_RESET, 0);
314 * The headphone output supports special anti-pop sequences giving
315 * silent power up and power down.
317 static int wm8961_hp_event(struct snd_soc_dapm_widget *w,
318 struct snd_kcontrol *kcontrol, int event)
320 struct snd_soc_codec *codec = w->codec;
321 u16 hp_reg = snd_soc_read(codec, WM8961_ANALOGUE_HP_0);
322 u16 cp_reg = snd_soc_read(codec, WM8961_CHARGE_PUMP_1);
323 u16 pwr_reg = snd_soc_read(codec, WM8961_PWR_MGMT_2);
324 u16 dcs_reg = snd_soc_read(codec, WM8961_DC_SERVO_1);
327 if (event & SND_SOC_DAPM_POST_PMU) {
328 /* Make sure the output is shorted */
329 hp_reg &= ~(WM8961_HPR_RMV_SHORT | WM8961_HPL_RMV_SHORT);
330 snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
332 /* Enable the charge pump */
333 cp_reg |= WM8961_CP_ENA;
334 snd_soc_write(codec, WM8961_CHARGE_PUMP_1, cp_reg);
338 pwr_reg |= WM8961_LOUT1_PGA | WM8961_ROUT1_PGA;
339 snd_soc_write(codec, WM8961_PWR_MGMT_2, pwr_reg);
341 /* Enable the amplifier */
342 hp_reg |= WM8961_HPR_ENA | WM8961_HPL_ENA;
343 snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
345 /* Second stage enable */
346 hp_reg |= WM8961_HPR_ENA_DLY | WM8961_HPL_ENA_DLY;
347 snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
349 /* Enable the DC servo & trigger startup */
351 WM8961_DCS_ENA_CHAN_HPR | WM8961_DCS_TRIG_STARTUP_HPR |
352 WM8961_DCS_ENA_CHAN_HPL | WM8961_DCS_TRIG_STARTUP_HPL;
353 dev_dbg(codec->dev, "Enabling DC servo\n");
355 snd_soc_write(codec, WM8961_DC_SERVO_1, dcs_reg);
358 dcs_reg = snd_soc_read(codec, WM8961_DC_SERVO_1);
359 } while (--timeout &&
360 dcs_reg & (WM8961_DCS_TRIG_STARTUP_HPR |
361 WM8961_DCS_TRIG_STARTUP_HPL));
362 if (dcs_reg & (WM8961_DCS_TRIG_STARTUP_HPR |
363 WM8961_DCS_TRIG_STARTUP_HPL))
364 dev_err(codec->dev, "DC servo timed out\n");
366 dev_dbg(codec->dev, "DC servo startup complete\n");
368 /* Enable the output stage */
369 hp_reg |= WM8961_HPR_ENA_OUTP | WM8961_HPL_ENA_OUTP;
370 snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
372 /* Remove the short on the output stage */
373 hp_reg |= WM8961_HPR_RMV_SHORT | WM8961_HPL_RMV_SHORT;
374 snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
377 if (event & SND_SOC_DAPM_PRE_PMD) {
378 /* Short the output */
379 hp_reg &= ~(WM8961_HPR_RMV_SHORT | WM8961_HPL_RMV_SHORT);
380 snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
382 /* Disable the output stage */
383 hp_reg &= ~(WM8961_HPR_ENA_OUTP | WM8961_HPL_ENA_OUTP);
384 snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
386 /* Disable DC offset cancellation */
387 dcs_reg &= ~(WM8961_DCS_ENA_CHAN_HPR |
388 WM8961_DCS_ENA_CHAN_HPL);
389 snd_soc_write(codec, WM8961_DC_SERVO_1, dcs_reg);
392 hp_reg &= ~(WM8961_HPR_ENA_DLY | WM8961_HPR_ENA |
393 WM8961_HPL_ENA_DLY | WM8961_HPL_ENA);
394 snd_soc_write(codec, WM8961_ANALOGUE_HP_0, hp_reg);
396 /* Disable the PGA */
397 pwr_reg &= ~(WM8961_LOUT1_PGA | WM8961_ROUT1_PGA);
398 snd_soc_write(codec, WM8961_PWR_MGMT_2, pwr_reg);
400 /* Disable the charge pump */
401 dev_dbg(codec->dev, "Disabling charge pump\n");
402 snd_soc_write(codec, WM8961_CHARGE_PUMP_1,
403 cp_reg & ~WM8961_CP_ENA);
409 static int wm8961_spk_event(struct snd_soc_dapm_widget *w,
410 struct snd_kcontrol *kcontrol, int event)
412 struct snd_soc_codec *codec = w->codec;
413 u16 pwr_reg = snd_soc_read(codec, WM8961_PWR_MGMT_2);
414 u16 spk_reg = snd_soc_read(codec, WM8961_CLASS_D_CONTROL_1);
416 if (event & SND_SOC_DAPM_POST_PMU) {
418 pwr_reg |= WM8961_SPKL_PGA | WM8961_SPKR_PGA;
419 snd_soc_write(codec, WM8961_PWR_MGMT_2, pwr_reg);
421 /* Enable the amplifier */
422 spk_reg |= WM8961_SPKL_ENA | WM8961_SPKR_ENA;
423 snd_soc_write(codec, WM8961_CLASS_D_CONTROL_1, spk_reg);
426 if (event & SND_SOC_DAPM_PRE_PMD) {
427 /* Enable the amplifier */
428 spk_reg &= ~(WM8961_SPKL_ENA | WM8961_SPKR_ENA);
429 snd_soc_write(codec, WM8961_CLASS_D_CONTROL_1, spk_reg);
432 pwr_reg &= ~(WM8961_SPKL_PGA | WM8961_SPKR_PGA);
433 snd_soc_write(codec, WM8961_PWR_MGMT_2, pwr_reg);
439 static const char *adc_hpf_text[] = {
440 "Hi-fi", "Voice 1", "Voice 2", "Voice 3",
443 static const struct soc_enum adc_hpf =
444 SOC_ENUM_SINGLE(WM8961_ADC_DAC_CONTROL_2, 7, 4, adc_hpf_text);
446 static const char *dac_deemph_text[] = {
447 "None", "32kHz", "44.1kHz", "48kHz",
450 static const struct soc_enum dac_deemph =
451 SOC_ENUM_SINGLE(WM8961_ADC_DAC_CONTROL_1, 1, 4, dac_deemph_text);
453 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
454 static const DECLARE_TLV_DB_SCALE(hp_sec_tlv, -700, 100, 0);
455 static const DECLARE_TLV_DB_SCALE(adc_tlv, -7200, 75, 1);
456 static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -3600, 300, 0);
457 static unsigned int boost_tlv[] = {
458 TLV_DB_RANGE_HEAD(4),
459 0, 0, TLV_DB_SCALE_ITEM(0, 0, 0),
460 1, 1, TLV_DB_SCALE_ITEM(13, 0, 0),
461 2, 2, TLV_DB_SCALE_ITEM(20, 0, 0),
462 3, 3, TLV_DB_SCALE_ITEM(29, 0, 0),
464 static const DECLARE_TLV_DB_SCALE(pga_tlv, -2325, 75, 0);
466 static const struct snd_kcontrol_new wm8961_snd_controls[] = {
467 SOC_DOUBLE_R_TLV("Headphone Volume", WM8961_LOUT1_VOLUME, WM8961_ROUT1_VOLUME,
469 SOC_DOUBLE_TLV("Headphone Secondary Volume", WM8961_ANALOGUE_HP_2,
470 6, 3, 7, 0, hp_sec_tlv),
471 SOC_DOUBLE_R("Headphone ZC Switch", WM8961_LOUT1_VOLUME, WM8961_ROUT1_VOLUME,
474 SOC_DOUBLE_R_TLV("Speaker Volume", WM8961_LOUT2_VOLUME, WM8961_ROUT2_VOLUME,
476 SOC_DOUBLE_R("Speaker ZC Switch", WM8961_LOUT2_VOLUME, WM8961_ROUT2_VOLUME,
478 SOC_SINGLE("Speaker AC Gain", WM8961_CLASS_D_CONTROL_2, 0, 7, 0),
480 SOC_SINGLE("DAC x128 OSR Switch", WM8961_ADC_DAC_CONTROL_2, 0, 1, 0),
481 SOC_ENUM("DAC Deemphasis", dac_deemph),
482 SOC_SINGLE("DAC Soft Mute Switch", WM8961_ADC_DAC_CONTROL_2, 3, 1, 0),
484 SOC_DOUBLE_R_TLV("Sidetone Volume", WM8961_DSP_SIDETONE_0,
485 WM8961_DSP_SIDETONE_1, 4, 12, 0, sidetone_tlv),
487 SOC_SINGLE("ADC High Pass Filter Switch", WM8961_ADC_DAC_CONTROL_1, 0, 1, 0),
488 SOC_ENUM("ADC High Pass Filter Mode", adc_hpf),
490 SOC_DOUBLE_R_TLV("Capture Volume",
491 WM8961_LEFT_ADC_VOLUME, WM8961_RIGHT_ADC_VOLUME,
493 SOC_DOUBLE_R_TLV("Capture Boost Volume",
494 WM8961_ADCL_SIGNAL_PATH, WM8961_ADCR_SIGNAL_PATH,
496 SOC_DOUBLE_R_TLV("Capture PGA Volume",
497 WM8961_LEFT_INPUT_VOLUME, WM8961_RIGHT_INPUT_VOLUME,
499 SOC_DOUBLE_R("Capture PGA ZC Switch",
500 WM8961_LEFT_INPUT_VOLUME, WM8961_RIGHT_INPUT_VOLUME,
502 SOC_DOUBLE_R("Capture PGA Switch",
503 WM8961_LEFT_INPUT_VOLUME, WM8961_RIGHT_INPUT_VOLUME,
507 static const char *sidetone_text[] = {
508 "None", "Left", "Right"
511 static const struct soc_enum dacl_sidetone =
512 SOC_ENUM_SINGLE(WM8961_DSP_SIDETONE_0, 2, 3, sidetone_text);
514 static const struct soc_enum dacr_sidetone =
515 SOC_ENUM_SINGLE(WM8961_DSP_SIDETONE_1, 2, 3, sidetone_text);
517 static const struct snd_kcontrol_new dacl_mux =
518 SOC_DAPM_ENUM("DACL Sidetone", dacl_sidetone);
520 static const struct snd_kcontrol_new dacr_mux =
521 SOC_DAPM_ENUM("DACR Sidetone", dacr_sidetone);
523 static const struct snd_soc_dapm_widget wm8961_dapm_widgets[] = {
524 SND_SOC_DAPM_INPUT("LINPUT"),
525 SND_SOC_DAPM_INPUT("RINPUT"),
527 SND_SOC_DAPM_SUPPLY("CLK_DSP", WM8961_CLOCKING2, 4, 0, NULL, 0),
529 SND_SOC_DAPM_PGA("Left Input", WM8961_PWR_MGMT_1, 5, 0, NULL, 0),
530 SND_SOC_DAPM_PGA("Right Input", WM8961_PWR_MGMT_1, 4, 0, NULL, 0),
532 SND_SOC_DAPM_ADC("ADCL", "HiFi Capture", WM8961_PWR_MGMT_1, 3, 0),
533 SND_SOC_DAPM_ADC("ADCR", "HiFi Capture", WM8961_PWR_MGMT_1, 2, 0),
535 SND_SOC_DAPM_MICBIAS("MICBIAS", WM8961_PWR_MGMT_1, 1, 0),
537 SND_SOC_DAPM_MUX("DACL Sidetone", SND_SOC_NOPM, 0, 0, &dacl_mux),
538 SND_SOC_DAPM_MUX("DACR Sidetone", SND_SOC_NOPM, 0, 0, &dacr_mux),
540 SND_SOC_DAPM_DAC("DACL", "HiFi Playback", WM8961_PWR_MGMT_2, 8, 0),
541 SND_SOC_DAPM_DAC("DACR", "HiFi Playback", WM8961_PWR_MGMT_2, 7, 0),
543 /* Handle as a mono path for DCS */
544 SND_SOC_DAPM_PGA_E("Headphone Output", SND_SOC_NOPM,
545 4, 0, NULL, 0, wm8961_hp_event,
546 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
547 SND_SOC_DAPM_PGA_E("Speaker Output", SND_SOC_NOPM,
548 4, 0, NULL, 0, wm8961_spk_event,
549 SND_SOC_DAPM_POST_PMU | SND_SOC_DAPM_PRE_PMD),
551 SND_SOC_DAPM_OUTPUT("HP_L"),
552 SND_SOC_DAPM_OUTPUT("HP_R"),
553 SND_SOC_DAPM_OUTPUT("SPK_LN"),
554 SND_SOC_DAPM_OUTPUT("SPK_LP"),
555 SND_SOC_DAPM_OUTPUT("SPK_RN"),
556 SND_SOC_DAPM_OUTPUT("SPK_RP"),
560 static const struct snd_soc_dapm_route audio_paths[] = {
561 { "DACL", NULL, "CLK_DSP" },
562 { "DACL", NULL, "DACL Sidetone" },
563 { "DACR", NULL, "CLK_DSP" },
564 { "DACR", NULL, "DACR Sidetone" },
566 { "DACL Sidetone", "Left", "ADCL" },
567 { "DACL Sidetone", "Right", "ADCR" },
569 { "DACR Sidetone", "Left", "ADCL" },
570 { "DACR Sidetone", "Right", "ADCR" },
572 { "HP_L", NULL, "Headphone Output" },
573 { "HP_R", NULL, "Headphone Output" },
574 { "Headphone Output", NULL, "DACL" },
575 { "Headphone Output", NULL, "DACR" },
577 { "SPK_LN", NULL, "Speaker Output" },
578 { "SPK_LP", NULL, "Speaker Output" },
579 { "SPK_RN", NULL, "Speaker Output" },
580 { "SPK_RP", NULL, "Speaker Output" },
582 { "Speaker Output", NULL, "DACL" },
583 { "Speaker Output", NULL, "DACR" },
585 { "ADCL", NULL, "Left Input" },
586 { "ADCL", NULL, "CLK_DSP" },
587 { "ADCR", NULL, "Right Input" },
588 { "ADCR", NULL, "CLK_DSP" },
590 { "Left Input", NULL, "LINPUT" },
591 { "Right Input", NULL, "RINPUT" },
595 /* Values for CLK_SYS_RATE */
599 } wm8961_clk_sys_ratio[] = {
612 /* Values for SAMPLE_RATE */
628 static int wm8961_hw_params(struct snd_pcm_substream *substream,
629 struct snd_pcm_hw_params *params,
630 struct snd_soc_dai *dai)
632 struct snd_soc_codec *codec = dai->codec;
633 struct wm8961_priv *wm8961 = codec->private_data;
634 int i, best, target, fs;
637 fs = params_rate(params);
639 if (!wm8961->sysclk) {
640 dev_err(codec->dev, "MCLK has not been specified\n");
644 /* Find the closest sample rate for the filters */
646 for (i = 0; i < ARRAY_SIZE(wm8961_srate); i++) {
647 if (abs(wm8961_srate[i].rate - fs) <
648 abs(wm8961_srate[best].rate - fs))
651 reg = snd_soc_read(codec, WM8961_ADDITIONAL_CONTROL_3);
652 reg &= ~WM8961_SAMPLE_RATE_MASK;
653 reg |= wm8961_srate[best].val;
654 snd_soc_write(codec, WM8961_ADDITIONAL_CONTROL_3, reg);
655 dev_dbg(codec->dev, "Selected SRATE %dHz for %dHz\n",
656 wm8961_srate[best].rate, fs);
658 /* Select a CLK_SYS/fs ratio equal to or higher than required */
659 target = wm8961->sysclk / fs;
661 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK && target < 64) {
663 "SYSCLK must be at least 64*fs for DAC\n");
666 if (substream->stream == SNDRV_PCM_STREAM_CAPTURE && target < 256) {
668 "SYSCLK must be at least 256*fs for ADC\n");
672 for (i = 0; i < ARRAY_SIZE(wm8961_clk_sys_ratio); i++) {
673 if (wm8961_clk_sys_ratio[i].ratio >= target)
676 if (i == ARRAY_SIZE(wm8961_clk_sys_ratio)) {
677 dev_err(codec->dev, "Unable to generate CLK_SYS_RATE\n");
680 dev_dbg(codec->dev, "Selected CLK_SYS_RATE of %d for %d/%d=%d\n",
681 wm8961_clk_sys_ratio[i].ratio, wm8961->sysclk, fs,
682 wm8961->sysclk / fs);
684 reg = snd_soc_read(codec, WM8961_CLOCKING_4);
685 reg &= ~WM8961_CLK_SYS_RATE_MASK;
686 reg |= wm8961_clk_sys_ratio[i].val << WM8961_CLK_SYS_RATE_SHIFT;
687 snd_soc_write(codec, WM8961_CLOCKING_4, reg);
689 reg = snd_soc_read(codec, WM8961_AUDIO_INTERFACE_0);
690 reg &= ~WM8961_WL_MASK;
691 switch (params_format(params)) {
692 case SNDRV_PCM_FORMAT_S16_LE:
694 case SNDRV_PCM_FORMAT_S20_3LE:
695 reg |= 1 << WM8961_WL_SHIFT;
697 case SNDRV_PCM_FORMAT_S24_LE:
698 reg |= 2 << WM8961_WL_SHIFT;
700 case SNDRV_PCM_FORMAT_S32_LE:
701 reg |= 3 << WM8961_WL_SHIFT;
706 snd_soc_write(codec, WM8961_AUDIO_INTERFACE_0, reg);
708 /* Sloping stop-band filter is recommended for <= 24kHz */
709 reg = snd_soc_read(codec, WM8961_ADC_DAC_CONTROL_2);
711 reg |= WM8961_DACSLOPE;
713 reg &= WM8961_DACSLOPE;
714 snd_soc_write(codec, WM8961_ADC_DAC_CONTROL_2, reg);
719 static int wm8961_set_sysclk(struct snd_soc_dai *dai, int clk_id,
723 struct snd_soc_codec *codec = dai->codec;
724 struct wm8961_priv *wm8961 = codec->private_data;
725 u16 reg = snd_soc_read(codec, WM8961_CLOCKING1);
727 if (freq > 33000000) {
728 dev_err(codec->dev, "MCLK must be <33MHz\n");
732 if (freq > 16500000) {
733 dev_dbg(codec->dev, "Using MCLK/2 for %dHz MCLK\n", freq);
734 reg |= WM8961_MCLKDIV;
737 dev_dbg(codec->dev, "Using MCLK/1 for %dHz MCLK\n", freq);
738 reg &= WM8961_MCLKDIV;
741 snd_soc_write(codec, WM8961_CLOCKING1, reg);
743 wm8961->sysclk = freq;
748 static int wm8961_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
750 struct snd_soc_codec *codec = dai->codec;
751 u16 aif = snd_soc_read(codec, WM8961_AUDIO_INTERFACE_0);
753 aif &= ~(WM8961_BCLKINV | WM8961_LRP |
754 WM8961_MS | WM8961_FORMAT_MASK);
756 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
757 case SND_SOC_DAIFMT_CBM_CFM:
760 case SND_SOC_DAIFMT_CBS_CFS:
766 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
767 case SND_SOC_DAIFMT_RIGHT_J:
770 case SND_SOC_DAIFMT_LEFT_J:
774 case SND_SOC_DAIFMT_I2S:
778 case SND_SOC_DAIFMT_DSP_B:
780 case SND_SOC_DAIFMT_DSP_A:
782 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
783 case SND_SOC_DAIFMT_NB_NF:
784 case SND_SOC_DAIFMT_IB_NF:
795 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
796 case SND_SOC_DAIFMT_NB_NF:
798 case SND_SOC_DAIFMT_NB_IF:
801 case SND_SOC_DAIFMT_IB_NF:
802 aif |= WM8961_BCLKINV;
804 case SND_SOC_DAIFMT_IB_IF:
805 aif |= WM8961_BCLKINV | WM8961_LRP;
811 return snd_soc_write(codec, WM8961_AUDIO_INTERFACE_0, aif);
814 static int wm8961_set_tristate(struct snd_soc_dai *dai, int tristate)
816 struct snd_soc_codec *codec = dai->codec;
817 u16 reg = snd_soc_read(codec, WM8961_ADDITIONAL_CONTROL_2);
824 return snd_soc_write(codec, WM8961_ADDITIONAL_CONTROL_2, reg);
827 static int wm8961_digital_mute(struct snd_soc_dai *dai, int mute)
829 struct snd_soc_codec *codec = dai->codec;
830 u16 reg = snd_soc_read(codec, WM8961_ADC_DAC_CONTROL_1);
835 reg &= ~WM8961_DACMU;
839 return snd_soc_write(codec, WM8961_ADC_DAC_CONTROL_1, reg);
842 static int wm8961_set_clkdiv(struct snd_soc_dai *dai, int div_id, int div)
844 struct snd_soc_codec *codec = dai->codec;
849 reg = snd_soc_read(codec, WM8961_CLOCKING2);
850 reg &= ~WM8961_BCLKDIV_MASK;
852 snd_soc_write(codec, WM8961_CLOCKING2, reg);
856 reg = snd_soc_read(codec, WM8961_AUDIO_INTERFACE_2);
857 reg &= ~WM8961_LRCLK_RATE_MASK;
859 snd_soc_write(codec, WM8961_AUDIO_INTERFACE_2, reg);
869 static int wm8961_set_bias_level(struct snd_soc_codec *codec,
870 enum snd_soc_bias_level level)
874 /* This is all slightly unusual since we have no bypass paths
875 * and the output amplifier structure means we can just slam
876 * the biases straight up rather than having to ramp them
880 case SND_SOC_BIAS_ON:
883 case SND_SOC_BIAS_PREPARE:
884 if (codec->bias_level == SND_SOC_BIAS_STANDBY) {
885 /* Enable bias generation */
886 reg = snd_soc_read(codec, WM8961_ANTI_POP);
887 reg |= WM8961_BUFIOEN | WM8961_BUFDCOPEN;
888 snd_soc_write(codec, WM8961_ANTI_POP, reg);
890 /* VMID=2*50k, VREF */
891 reg = snd_soc_read(codec, WM8961_PWR_MGMT_1);
892 reg &= ~WM8961_VMIDSEL_MASK;
893 reg |= (1 << WM8961_VMIDSEL_SHIFT) | WM8961_VREF;
894 snd_soc_write(codec, WM8961_PWR_MGMT_1, reg);
898 case SND_SOC_BIAS_STANDBY:
899 if (codec->bias_level == SND_SOC_BIAS_PREPARE) {
901 reg = snd_soc_read(codec, WM8961_PWR_MGMT_1);
903 snd_soc_write(codec, WM8961_PWR_MGMT_1, reg);
905 /* Bias generation off */
906 reg = snd_soc_read(codec, WM8961_ANTI_POP);
907 reg &= ~(WM8961_BUFIOEN | WM8961_BUFDCOPEN);
908 snd_soc_write(codec, WM8961_ANTI_POP, reg);
911 reg = snd_soc_read(codec, WM8961_PWR_MGMT_1);
912 reg &= ~WM8961_VMIDSEL_MASK;
913 snd_soc_write(codec, WM8961_PWR_MGMT_1, reg);
917 case SND_SOC_BIAS_OFF:
921 codec->bias_level = level;
927 #define WM8961_RATES SNDRV_PCM_RATE_8000_48000
929 #define WM8961_FORMATS \
930 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
931 SNDRV_PCM_FMTBIT_S24_LE)
933 static struct snd_soc_dai_ops wm8961_dai_ops = {
934 .hw_params = wm8961_hw_params,
935 .set_sysclk = wm8961_set_sysclk,
936 .set_fmt = wm8961_set_fmt,
937 .digital_mute = wm8961_digital_mute,
938 .set_tristate = wm8961_set_tristate,
939 .set_clkdiv = wm8961_set_clkdiv,
942 struct snd_soc_dai wm8961_dai = {
945 .stream_name = "HiFi Playback",
948 .rates = WM8961_RATES,
949 .formats = WM8961_FORMATS,},
951 .stream_name = "HiFi Capture",
954 .rates = WM8961_RATES,
955 .formats = WM8961_FORMATS,},
956 .ops = &wm8961_dai_ops,
958 EXPORT_SYMBOL_GPL(wm8961_dai);
961 static struct snd_soc_codec *wm8961_codec;
963 static int wm8961_probe(struct platform_device *pdev)
965 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
966 struct snd_soc_codec *codec;
969 if (wm8961_codec == NULL) {
970 dev_err(&pdev->dev, "Codec device not registered\n");
974 socdev->card->codec = wm8961_codec;
975 codec = wm8961_codec;
978 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
980 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
984 snd_soc_add_controls(codec, wm8961_snd_controls,
985 ARRAY_SIZE(wm8961_snd_controls));
986 snd_soc_dapm_new_controls(codec, wm8961_dapm_widgets,
987 ARRAY_SIZE(wm8961_dapm_widgets));
988 snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
989 snd_soc_dapm_new_widgets(codec);
991 ret = snd_soc_init_card(socdev);
993 dev_err(codec->dev, "failed to register card: %d\n", ret);
1000 snd_soc_free_pcms(socdev);
1001 snd_soc_dapm_free(socdev);
1006 static int wm8961_remove(struct platform_device *pdev)
1008 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1010 snd_soc_free_pcms(socdev);
1011 snd_soc_dapm_free(socdev);
1017 static int wm8961_suspend(struct platform_device *pdev, pm_message_t state)
1019 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1020 struct snd_soc_codec *codec = socdev->card->codec;
1022 wm8961_set_bias_level(codec, SND_SOC_BIAS_OFF);
1027 static int wm8961_resume(struct platform_device *pdev)
1029 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
1030 struct snd_soc_codec *codec = socdev->card->codec;
1031 u16 *reg_cache = codec->reg_cache;
1034 for (i = 0; i < codec->reg_cache_size; i++) {
1035 if (i == WM8961_SOFTWARE_RESET)
1038 snd_soc_write(codec, i, reg_cache[i]);
1041 wm8961_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1046 #define wm8961_suspend NULL
1047 #define wm8961_resume NULL
1050 struct snd_soc_codec_device soc_codec_dev_wm8961 = {
1051 .probe = wm8961_probe,
1052 .remove = wm8961_remove,
1053 .suspend = wm8961_suspend,
1054 .resume = wm8961_resume,
1056 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8961);
1058 static int wm8961_register(struct wm8961_priv *wm8961)
1060 struct snd_soc_codec *codec = &wm8961->codec;
1065 dev_err(codec->dev, "Another WM8961 is registered\n");
1070 mutex_init(&codec->mutex);
1071 INIT_LIST_HEAD(&codec->dapm_widgets);
1072 INIT_LIST_HEAD(&codec->dapm_paths);
1074 codec->private_data = wm8961;
1075 codec->name = "WM8961";
1076 codec->owner = THIS_MODULE;
1077 codec->dai = &wm8961_dai;
1079 codec->reg_cache_size = ARRAY_SIZE(wm8961->reg_cache);
1080 codec->reg_cache = &wm8961->reg_cache;
1081 codec->bias_level = SND_SOC_BIAS_OFF;
1082 codec->set_bias_level = wm8961_set_bias_level;
1083 codec->volatile_register = wm8961_volatile_register;
1085 memcpy(codec->reg_cache, wm8961_reg_defaults,
1086 sizeof(wm8961_reg_defaults));
1088 ret = snd_soc_codec_set_cache_io(codec, 8, 16, SND_SOC_I2C);
1090 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
1094 reg = snd_soc_read(codec, WM8961_SOFTWARE_RESET);
1095 if (reg != 0x1801) {
1096 dev_err(codec->dev, "Device is not a WM8961: ID=0x%x\n", reg);
1101 /* This isn't volatile - readback doesn't correspond to write */
1102 reg = codec->hw_read(codec, WM8961_RIGHT_INPUT_VOLUME);
1103 dev_info(codec->dev, "WM8961 family %d revision %c\n",
1104 (reg & WM8961_DEVICE_ID_MASK) >> WM8961_DEVICE_ID_SHIFT,
1105 ((reg & WM8961_CHIP_REV_MASK) >> WM8961_CHIP_REV_SHIFT)
1108 ret = wm8961_reset(codec);
1110 dev_err(codec->dev, "Failed to issue reset\n");
1114 /* Enable class W */
1115 reg = snd_soc_read(codec, WM8961_CHARGE_PUMP_B);
1116 reg |= WM8961_CP_DYN_PWR_MASK;
1117 snd_soc_write(codec, WM8961_CHARGE_PUMP_B, reg);
1119 /* Latch volume update bits (right channel only, we always
1120 * write both out) and default ZC on. */
1121 reg = snd_soc_read(codec, WM8961_ROUT1_VOLUME);
1122 snd_soc_write(codec, WM8961_ROUT1_VOLUME,
1123 reg | WM8961_LO1ZC | WM8961_OUT1VU);
1124 snd_soc_write(codec, WM8961_LOUT1_VOLUME, reg | WM8961_LO1ZC);
1125 reg = snd_soc_read(codec, WM8961_ROUT2_VOLUME);
1126 snd_soc_write(codec, WM8961_ROUT2_VOLUME,
1127 reg | WM8961_SPKRZC | WM8961_SPKVU);
1128 snd_soc_write(codec, WM8961_LOUT2_VOLUME, reg | WM8961_SPKLZC);
1130 reg = snd_soc_read(codec, WM8961_RIGHT_ADC_VOLUME);
1131 snd_soc_write(codec, WM8961_RIGHT_ADC_VOLUME, reg | WM8961_ADCVU);
1132 reg = snd_soc_read(codec, WM8961_RIGHT_INPUT_VOLUME);
1133 snd_soc_write(codec, WM8961_RIGHT_INPUT_VOLUME, reg | WM8961_IPVU);
1135 /* Use soft mute by default */
1136 reg = snd_soc_read(codec, WM8961_ADC_DAC_CONTROL_2);
1137 reg |= WM8961_DACSMM;
1138 snd_soc_write(codec, WM8961_ADC_DAC_CONTROL_2, reg);
1140 /* Use automatic clocking mode by default; for now this is all
1143 reg = snd_soc_read(codec, WM8961_CLOCKING_3);
1144 reg &= ~WM8961_MANUAL_MODE;
1145 snd_soc_write(codec, WM8961_CLOCKING_3, reg);
1147 wm8961_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1149 wm8961_dai.dev = codec->dev;
1151 wm8961_codec = codec;
1153 ret = snd_soc_register_codec(codec);
1155 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
1159 ret = snd_soc_register_dai(&wm8961_dai);
1161 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
1162 snd_soc_unregister_codec(codec);
1173 static void wm8961_unregister(struct wm8961_priv *wm8961)
1175 wm8961_set_bias_level(&wm8961->codec, SND_SOC_BIAS_OFF);
1176 snd_soc_unregister_dai(&wm8961_dai);
1177 snd_soc_unregister_codec(&wm8961->codec);
1179 wm8961_codec = NULL;
1182 static __devinit int wm8961_i2c_probe(struct i2c_client *i2c,
1183 const struct i2c_device_id *id)
1185 struct wm8961_priv *wm8961;
1186 struct snd_soc_codec *codec;
1188 wm8961 = kzalloc(sizeof(struct wm8961_priv), GFP_KERNEL);
1192 codec = &wm8961->codec;
1194 i2c_set_clientdata(i2c, wm8961);
1195 codec->control_data = i2c;
1197 codec->dev = &i2c->dev;
1199 return wm8961_register(wm8961);
1202 static __devexit int wm8961_i2c_remove(struct i2c_client *client)
1204 struct wm8961_priv *wm8961 = i2c_get_clientdata(client);
1205 wm8961_unregister(wm8961);
1210 static int wm8961_i2c_suspend(struct i2c_client *client, pm_message_t state)
1212 return snd_soc_suspend_device(&client->dev);
1215 static int wm8961_i2c_resume(struct i2c_client *client)
1217 return snd_soc_resume_device(&client->dev);
1220 #define wm8961_i2c_suspend NULL
1221 #define wm8961_i2c_resume NULL
1224 static const struct i2c_device_id wm8961_i2c_id[] = {
1228 MODULE_DEVICE_TABLE(i2c, wm8961_i2c_id);
1230 static struct i2c_driver wm8961_i2c_driver = {
1233 .owner = THIS_MODULE,
1235 .probe = wm8961_i2c_probe,
1236 .remove = __devexit_p(wm8961_i2c_remove),
1237 .suspend = wm8961_i2c_suspend,
1238 .resume = wm8961_i2c_resume,
1239 .id_table = wm8961_i2c_id,
1242 static int __init wm8961_modinit(void)
1246 ret = i2c_add_driver(&wm8961_i2c_driver);
1248 printk(KERN_ERR "Failed to register WM8961 I2C driver: %d\n",
1254 module_init(wm8961_modinit);
1256 static void __exit wm8961_exit(void)
1258 i2c_del_driver(&wm8961_i2c_driver);
1260 module_exit(wm8961_exit);
1263 MODULE_DESCRIPTION("ASoC WM8961 driver");
1264 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
1265 MODULE_LICENSE("GPL");