2 * wm8960.c -- WM8960 ALSA SoC Audio driver
4 * Copyright 2007-11 Wolfson Microelectronics, plc
6 * Author: Liam Girdwood
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #include <linux/module.h>
14 #include <linux/moduleparam.h>
15 #include <linux/init.h>
16 #include <linux/delay.h>
18 #include <linux/clk.h>
19 #include <linux/i2c.h>
20 #include <linux/slab.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/initval.h>
26 #include <sound/tlv.h>
27 #include <sound/wm8960.h>
32 #define WM8960_VMID_MASK 0x180
33 #define WM8960_VREF 0x40
36 #define WM8960_PWR2_LOUT1 0x40
37 #define WM8960_PWR2_ROUT1 0x20
38 #define WM8960_PWR2_OUT3 0x02
40 /* R28 - Anti-pop 1 */
41 #define WM8960_POBCTRL 0x80
42 #define WM8960_BUFDCOPEN 0x10
43 #define WM8960_BUFIOEN 0x08
44 #define WM8960_SOFT_ST 0x04
45 #define WM8960_HPSTBY 0x01
47 /* R29 - Anti-pop 2 */
48 #define WM8960_DISOP 0x40
49 #define WM8960_DRES_MASK 0x30
52 * wm8960 register cache
53 * We can't read the WM8960 register space when we are
54 * using 2 wire for device control, so we cache them instead.
56 static const struct reg_default wm8960_reg_defaults[] = {
110 static bool wm8960_volatile(struct device *dev, unsigned int reg)
122 struct regmap *regmap;
123 int (*set_bias_level)(struct snd_soc_codec *,
124 enum snd_soc_bias_level level);
125 struct snd_soc_dapm_widget *lout1;
126 struct snd_soc_dapm_widget *rout1;
127 struct snd_soc_dapm_widget *out3;
130 struct wm8960_data pdata;
133 #define wm8960_reset(c) regmap_write(c, WM8960_RESET, 0)
135 /* enumerated controls */
136 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
137 "Right Inverted", "Stereo Inversion"};
138 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
139 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
140 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
141 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
143 static const struct soc_enum wm8960_enum[] = {
144 SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
145 SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
146 SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
147 SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
148 SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
149 SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
152 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
154 static int wm8960_set_deemph(struct snd_soc_codec *codec)
156 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
159 /* If we're using deemphasis select the nearest available sample
162 if (wm8960->deemph) {
164 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
165 if (abs(deemph_settings[i] - wm8960->playback_fs) <
166 abs(deemph_settings[best] - wm8960->playback_fs))
175 dev_dbg(codec->dev, "Set deemphasis %d\n", val);
177 return snd_soc_update_bits(codec, WM8960_DACCTL1,
181 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
182 struct snd_ctl_elem_value *ucontrol)
184 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
185 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
187 ucontrol->value.enumerated.item[0] = wm8960->deemph;
191 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
192 struct snd_ctl_elem_value *ucontrol)
194 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
195 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
196 int deemph = ucontrol->value.enumerated.item[0];
201 wm8960->deemph = deemph;
203 return wm8960_set_deemph(codec);
206 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
207 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
208 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
209 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
210 static const DECLARE_TLV_DB_SCALE(boost_tlv, -1200, 300, 1);
212 static const struct snd_kcontrol_new wm8960_snd_controls[] = {
213 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
215 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
217 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
220 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT3 Volume",
221 WM8960_INBMIX1, 4, 7, 0, boost_tlv),
222 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT2 Volume",
223 WM8960_INBMIX1, 1, 7, 0, boost_tlv),
224 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT3 Volume",
225 WM8960_INBMIX2, 4, 7, 0, boost_tlv),
226 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT2 Volume",
227 WM8960_INBMIX2, 1, 7, 0, boost_tlv),
229 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
232 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
234 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
237 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
239 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
241 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
242 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
244 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
245 SOC_ENUM("ADC Polarity", wm8960_enum[0]),
246 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
248 SOC_ENUM("DAC Polarity", wm8960_enum[2]),
249 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
250 wm8960_get_deemph, wm8960_put_deemph),
252 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
253 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
254 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
255 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
257 SOC_ENUM("ALC Function", wm8960_enum[4]),
258 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
259 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
260 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
261 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
262 SOC_ENUM("ALC Mode", wm8960_enum[5]),
263 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
264 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
266 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
267 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
269 SOC_DOUBLE_R_TLV("ADC PCM Capture Volume", WM8960_LADC, WM8960_RADC,
272 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
273 WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
274 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
275 WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
276 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
277 WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
278 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
279 WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
282 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
283 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
284 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
285 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
288 static const struct snd_kcontrol_new wm8960_lin[] = {
289 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
292 static const struct snd_kcontrol_new wm8960_rin_boost[] = {
293 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
294 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
295 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
298 static const struct snd_kcontrol_new wm8960_rin[] = {
299 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
302 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
303 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
304 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
305 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
308 static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
309 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
310 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
311 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
314 static const struct snd_kcontrol_new wm8960_mono_out[] = {
315 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
316 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
319 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
320 SND_SOC_DAPM_INPUT("LINPUT1"),
321 SND_SOC_DAPM_INPUT("RINPUT1"),
322 SND_SOC_DAPM_INPUT("LINPUT2"),
323 SND_SOC_DAPM_INPUT("RINPUT2"),
324 SND_SOC_DAPM_INPUT("LINPUT3"),
325 SND_SOC_DAPM_INPUT("RINPUT3"),
327 SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0),
329 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
330 wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
331 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
332 wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
334 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
335 wm8960_lin, ARRAY_SIZE(wm8960_lin)),
336 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
337 wm8960_rin, ARRAY_SIZE(wm8960_rin)),
339 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER1, 3, 0),
340 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER1, 2, 0),
342 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
343 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
345 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
346 &wm8960_loutput_mixer[0],
347 ARRAY_SIZE(wm8960_loutput_mixer)),
348 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
349 &wm8960_routput_mixer[0],
350 ARRAY_SIZE(wm8960_routput_mixer)),
352 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
353 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
355 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
356 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
358 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
359 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
361 SND_SOC_DAPM_OUTPUT("SPK_LP"),
362 SND_SOC_DAPM_OUTPUT("SPK_LN"),
363 SND_SOC_DAPM_OUTPUT("HP_L"),
364 SND_SOC_DAPM_OUTPUT("HP_R"),
365 SND_SOC_DAPM_OUTPUT("SPK_RP"),
366 SND_SOC_DAPM_OUTPUT("SPK_RN"),
367 SND_SOC_DAPM_OUTPUT("OUT3"),
370 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
371 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
373 ARRAY_SIZE(wm8960_mono_out)),
376 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
377 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
378 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
381 static const struct snd_soc_dapm_route audio_paths[] = {
382 { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
383 { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
384 { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
386 { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
387 { "Left Input Mixer", NULL, "LINPUT1", }, /* Really Boost Switch */
388 { "Left Input Mixer", NULL, "LINPUT2" },
389 { "Left Input Mixer", NULL, "LINPUT3" },
391 { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
392 { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
393 { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
395 { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
396 { "Right Input Mixer", NULL, "RINPUT1", }, /* Really Boost Switch */
397 { "Right Input Mixer", NULL, "RINPUT2" },
398 { "Right Input Mixer", NULL, "LINPUT3" },
400 { "Left ADC", NULL, "Left Input Mixer" },
401 { "Right ADC", NULL, "Right Input Mixer" },
403 { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
404 { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
405 { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
407 { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
408 { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
409 { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
411 { "LOUT1 PGA", NULL, "Left Output Mixer" },
412 { "ROUT1 PGA", NULL, "Right Output Mixer" },
414 { "HP_L", NULL, "LOUT1 PGA" },
415 { "HP_R", NULL, "ROUT1 PGA" },
417 { "Left Speaker PGA", NULL, "Left Output Mixer" },
418 { "Right Speaker PGA", NULL, "Right Output Mixer" },
420 { "Left Speaker Output", NULL, "Left Speaker PGA" },
421 { "Right Speaker Output", NULL, "Right Speaker PGA" },
423 { "SPK_LN", NULL, "Left Speaker Output" },
424 { "SPK_LP", NULL, "Left Speaker Output" },
425 { "SPK_RN", NULL, "Right Speaker Output" },
426 { "SPK_RP", NULL, "Right Speaker Output" },
429 static const struct snd_soc_dapm_route audio_paths_out3[] = {
430 { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
431 { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
433 { "OUT3", NULL, "Mono Output Mixer", }
436 static const struct snd_soc_dapm_route audio_paths_capless[] = {
437 { "HP_L", NULL, "OUT3 VMID" },
438 { "HP_R", NULL, "OUT3 VMID" },
440 { "OUT3 VMID", NULL, "Left Output Mixer" },
441 { "OUT3 VMID", NULL, "Right Output Mixer" },
444 static int wm8960_add_widgets(struct snd_soc_codec *codec)
446 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
447 struct wm8960_data *pdata = &wm8960->pdata;
448 struct snd_soc_dapm_context *dapm = &codec->dapm;
449 struct snd_soc_dapm_widget *w;
451 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets,
452 ARRAY_SIZE(wm8960_dapm_widgets));
454 snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));
456 /* In capless mode OUT3 is used to provide VMID for the
457 * headphone outputs, otherwise it is used as a mono mixer.
459 if (pdata && pdata->capless) {
460 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless,
461 ARRAY_SIZE(wm8960_dapm_widgets_capless));
463 snd_soc_dapm_add_routes(dapm, audio_paths_capless,
464 ARRAY_SIZE(audio_paths_capless));
466 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3,
467 ARRAY_SIZE(wm8960_dapm_widgets_out3));
469 snd_soc_dapm_add_routes(dapm, audio_paths_out3,
470 ARRAY_SIZE(audio_paths_out3));
473 /* We need to power up the headphone output stage out of
474 * sequence for capless mode. To save scanning the widget
475 * list each time to find the desired power state do so now
476 * and save the result.
478 list_for_each_entry(w, &codec->component.card->widgets, list) {
479 if (w->dapm != &codec->dapm)
481 if (strcmp(w->name, "LOUT1 PGA") == 0)
483 if (strcmp(w->name, "ROUT1 PGA") == 0)
485 if (strcmp(w->name, "OUT3 VMID") == 0)
492 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
495 struct snd_soc_codec *codec = codec_dai->codec;
498 /* set master/slave audio interface */
499 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
500 case SND_SOC_DAIFMT_CBM_CFM:
503 case SND_SOC_DAIFMT_CBS_CFS:
509 /* interface format */
510 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
511 case SND_SOC_DAIFMT_I2S:
514 case SND_SOC_DAIFMT_RIGHT_J:
516 case SND_SOC_DAIFMT_LEFT_J:
519 case SND_SOC_DAIFMT_DSP_A:
522 case SND_SOC_DAIFMT_DSP_B:
529 /* clock inversion */
530 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
531 case SND_SOC_DAIFMT_NB_NF:
533 case SND_SOC_DAIFMT_IB_IF:
536 case SND_SOC_DAIFMT_IB_NF:
539 case SND_SOC_DAIFMT_NB_IF:
547 snd_soc_write(codec, WM8960_IFACE1, iface);
566 static int wm8960_hw_params(struct snd_pcm_substream *substream,
567 struct snd_pcm_hw_params *params,
568 struct snd_soc_dai *dai)
570 struct snd_soc_codec *codec = dai->codec;
571 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
572 u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
576 switch (params_width(params)) {
586 dev_err(codec->dev, "unsupported width %d\n",
587 params_width(params));
591 /* Update filters for the new rate */
592 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
593 wm8960->playback_fs = params_rate(params);
594 wm8960_set_deemph(codec);
596 for (i = 0; i < ARRAY_SIZE(alc_rates); i++)
597 if (alc_rates[i].rate == params_rate(params))
598 snd_soc_update_bits(codec,
604 snd_soc_write(codec, WM8960_IFACE1, iface);
608 static int wm8960_mute(struct snd_soc_dai *dai, int mute)
610 struct snd_soc_codec *codec = dai->codec;
613 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0x8);
615 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0);
619 static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
620 enum snd_soc_bias_level level)
622 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
626 case SND_SOC_BIAS_ON:
629 case SND_SOC_BIAS_PREPARE:
630 switch (codec->dapm.bias_level) {
631 case SND_SOC_BIAS_STANDBY:
632 if (!IS_ERR(wm8960->mclk)) {
633 ret = clk_prepare_enable(wm8960->mclk);
636 "Failed to enable MCLK: %d\n",
642 /* Set VMID to 2x50k */
643 snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x80);
646 case SND_SOC_BIAS_ON:
647 if (!IS_ERR(wm8960->mclk))
648 clk_disable_unprepare(wm8960->mclk);
657 case SND_SOC_BIAS_STANDBY:
658 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
659 regcache_sync(wm8960->regmap);
661 /* Enable anti-pop features */
662 snd_soc_write(codec, WM8960_APOP1,
663 WM8960_POBCTRL | WM8960_SOFT_ST |
664 WM8960_BUFDCOPEN | WM8960_BUFIOEN);
666 /* Enable & ramp VMID at 2x50k */
667 snd_soc_update_bits(codec, WM8960_POWER1, 0x80, 0x80);
671 snd_soc_update_bits(codec, WM8960_POWER1, WM8960_VREF,
674 /* Disable anti-pop features */
675 snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
678 /* Set VMID to 2x250k */
679 snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x100);
682 case SND_SOC_BIAS_OFF:
683 /* Enable anti-pop features */
684 snd_soc_write(codec, WM8960_APOP1,
685 WM8960_POBCTRL | WM8960_SOFT_ST |
686 WM8960_BUFDCOPEN | WM8960_BUFIOEN);
688 /* Disable VMID and VREF, let them discharge */
689 snd_soc_write(codec, WM8960_POWER1, 0);
694 codec->dapm.bias_level = level;
699 static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec,
700 enum snd_soc_bias_level level)
702 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
706 case SND_SOC_BIAS_ON:
709 case SND_SOC_BIAS_PREPARE:
710 switch (codec->dapm.bias_level) {
711 case SND_SOC_BIAS_STANDBY:
712 /* Enable anti pop mode */
713 snd_soc_update_bits(codec, WM8960_APOP1,
714 WM8960_POBCTRL | WM8960_SOFT_ST |
716 WM8960_POBCTRL | WM8960_SOFT_ST |
719 /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
721 if (wm8960->lout1 && wm8960->lout1->power)
722 reg |= WM8960_PWR2_LOUT1;
723 if (wm8960->rout1 && wm8960->rout1->power)
724 reg |= WM8960_PWR2_ROUT1;
725 if (wm8960->out3 && wm8960->out3->power)
726 reg |= WM8960_PWR2_OUT3;
727 snd_soc_update_bits(codec, WM8960_POWER2,
730 WM8960_PWR2_OUT3, reg);
732 /* Enable VMID at 2*50k */
733 snd_soc_update_bits(codec, WM8960_POWER1,
734 WM8960_VMID_MASK, 0x80);
740 snd_soc_update_bits(codec, WM8960_POWER1,
741 WM8960_VREF, WM8960_VREF);
745 if (!IS_ERR(wm8960->mclk)) {
746 ret = clk_prepare_enable(wm8960->mclk);
749 "Failed to enable MCLK: %d\n",
756 case SND_SOC_BIAS_ON:
757 if (!IS_ERR(wm8960->mclk))
758 clk_disable_unprepare(wm8960->mclk);
760 /* Enable anti-pop mode */
761 snd_soc_update_bits(codec, WM8960_APOP1,
762 WM8960_POBCTRL | WM8960_SOFT_ST |
764 WM8960_POBCTRL | WM8960_SOFT_ST |
767 /* Disable VMID and VREF */
768 snd_soc_update_bits(codec, WM8960_POWER1,
769 WM8960_VREF | WM8960_VMID_MASK, 0);
772 case SND_SOC_BIAS_OFF:
773 regcache_sync(wm8960->regmap);
780 case SND_SOC_BIAS_STANDBY:
781 switch (codec->dapm.bias_level) {
782 case SND_SOC_BIAS_PREPARE:
783 /* Disable HP discharge */
784 snd_soc_update_bits(codec, WM8960_APOP2,
785 WM8960_DISOP | WM8960_DRES_MASK,
788 /* Disable anti-pop features */
789 snd_soc_update_bits(codec, WM8960_APOP1,
790 WM8960_POBCTRL | WM8960_SOFT_ST |
792 WM8960_POBCTRL | WM8960_SOFT_ST |
801 case SND_SOC_BIAS_OFF:
805 codec->dapm.bias_level = level;
817 /* The size in bits of the pll divide multiplied by 10
818 * to allow rounding later */
819 #define FIXED_PLL_SIZE ((1 << 24) * 10)
821 static int pll_factors(unsigned int source, unsigned int target,
822 struct _pll_div *pll_div)
824 unsigned long long Kpart;
825 unsigned int K, Ndiv, Nmod;
827 pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
829 /* Scale up target to PLL operating frequency */
832 Ndiv = target / source;
835 pll_div->pre_div = 1;
836 Ndiv = target / source;
838 pll_div->pre_div = 0;
840 if ((Ndiv < 6) || (Ndiv > 12)) {
841 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
846 Nmod = target % source;
847 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
849 do_div(Kpart, source);
851 K = Kpart & 0xFFFFFFFF;
853 /* Check if we need to round */
857 /* Move down to proper range now rounding is done */
862 pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
863 pll_div->n, pll_div->k, pll_div->pre_div);
868 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
869 int source, unsigned int freq_in, unsigned int freq_out)
871 struct snd_soc_codec *codec = codec_dai->codec;
873 static struct _pll_div pll_div;
876 if (freq_in && freq_out) {
877 ret = pll_factors(freq_in, freq_out, &pll_div);
882 /* Disable the PLL: even if we are changing the frequency the
883 * PLL needs to be disabled while we do so. */
884 snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0);
885 snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0);
887 if (!freq_in || !freq_out)
890 reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
891 reg |= pll_div.pre_div << 4;
897 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 16) & 0xff);
898 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 8) & 0xff);
899 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0xff);
901 snd_soc_write(codec, WM8960_PLL1, reg);
904 snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0x1);
906 snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0x1);
911 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
914 struct snd_soc_codec *codec = codec_dai->codec;
918 case WM8960_SYSCLKDIV:
919 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
920 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
923 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
924 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
926 case WM8960_OPCLKDIV:
927 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
928 snd_soc_write(codec, WM8960_PLL1, reg | div);
931 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
932 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
934 case WM8960_TOCLKSEL:
935 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
936 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
945 static int wm8960_set_bias_level(struct snd_soc_codec *codec,
946 enum snd_soc_bias_level level)
948 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
950 return wm8960->set_bias_level(codec, level);
953 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
955 #define WM8960_FORMATS \
956 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
957 SNDRV_PCM_FMTBIT_S24_LE)
959 static const struct snd_soc_dai_ops wm8960_dai_ops = {
960 .hw_params = wm8960_hw_params,
961 .digital_mute = wm8960_mute,
962 .set_fmt = wm8960_set_dai_fmt,
963 .set_clkdiv = wm8960_set_dai_clkdiv,
964 .set_pll = wm8960_set_dai_pll,
967 static struct snd_soc_dai_driver wm8960_dai = {
968 .name = "wm8960-hifi",
970 .stream_name = "Playback",
973 .rates = WM8960_RATES,
974 .formats = WM8960_FORMATS,},
976 .stream_name = "Capture",
979 .rates = WM8960_RATES,
980 .formats = WM8960_FORMATS,},
981 .ops = &wm8960_dai_ops,
982 .symmetric_rates = 1,
985 static int wm8960_probe(struct snd_soc_codec *codec)
987 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
988 struct wm8960_data *pdata = &wm8960->pdata;
991 wm8960->set_bias_level = wm8960_set_bias_level_capless;
993 wm8960->set_bias_level = wm8960_set_bias_level_out3;
995 snd_soc_add_codec_controls(codec, wm8960_snd_controls,
996 ARRAY_SIZE(wm8960_snd_controls));
997 wm8960_add_widgets(codec);
1002 static struct snd_soc_codec_driver soc_codec_dev_wm8960 = {
1003 .probe = wm8960_probe,
1004 .set_bias_level = wm8960_set_bias_level,
1005 .suspend_bias_off = true,
1008 static const struct regmap_config wm8960_regmap = {
1011 .max_register = WM8960_PLL4,
1013 .reg_defaults = wm8960_reg_defaults,
1014 .num_reg_defaults = ARRAY_SIZE(wm8960_reg_defaults),
1015 .cache_type = REGCACHE_RBTREE,
1017 .volatile_reg = wm8960_volatile,
1020 static void wm8960_set_pdata_from_of(struct i2c_client *i2c,
1021 struct wm8960_data *pdata)
1023 const struct device_node *np = i2c->dev.of_node;
1025 if (of_property_read_bool(np, "wlf,capless"))
1026 pdata->capless = true;
1028 if (of_property_read_bool(np, "wlf,shared-lrclk"))
1029 pdata->shared_lrclk = true;
1032 static int wm8960_i2c_probe(struct i2c_client *i2c,
1033 const struct i2c_device_id *id)
1035 struct wm8960_data *pdata = dev_get_platdata(&i2c->dev);
1036 struct wm8960_priv *wm8960;
1039 wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv),
1044 wm8960->mclk = devm_clk_get(&i2c->dev, "mclk");
1045 if (IS_ERR(wm8960->mclk)) {
1046 if (PTR_ERR(wm8960->mclk) == -EPROBE_DEFER)
1047 return -EPROBE_DEFER;
1050 wm8960->regmap = devm_regmap_init_i2c(i2c, &wm8960_regmap);
1051 if (IS_ERR(wm8960->regmap))
1052 return PTR_ERR(wm8960->regmap);
1055 memcpy(&wm8960->pdata, pdata, sizeof(struct wm8960_data));
1056 else if (i2c->dev.of_node)
1057 wm8960_set_pdata_from_of(i2c, &wm8960->pdata);
1059 ret = wm8960_reset(wm8960->regmap);
1061 dev_err(&i2c->dev, "Failed to issue reset\n");
1065 if (wm8960->pdata.shared_lrclk) {
1066 ret = regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2,
1069 dev_err(&i2c->dev, "Failed to enable LRCM: %d\n",
1075 /* Latch the update bits */
1076 regmap_update_bits(wm8960->regmap, WM8960_LINVOL, 0x100, 0x100);
1077 regmap_update_bits(wm8960->regmap, WM8960_RINVOL, 0x100, 0x100);
1078 regmap_update_bits(wm8960->regmap, WM8960_LADC, 0x100, 0x100);
1079 regmap_update_bits(wm8960->regmap, WM8960_RADC, 0x100, 0x100);
1080 regmap_update_bits(wm8960->regmap, WM8960_LDAC, 0x100, 0x100);
1081 regmap_update_bits(wm8960->regmap, WM8960_RDAC, 0x100, 0x100);
1082 regmap_update_bits(wm8960->regmap, WM8960_LOUT1, 0x100, 0x100);
1083 regmap_update_bits(wm8960->regmap, WM8960_ROUT1, 0x100, 0x100);
1084 regmap_update_bits(wm8960->regmap, WM8960_LOUT2, 0x100, 0x100);
1085 regmap_update_bits(wm8960->regmap, WM8960_ROUT2, 0x100, 0x100);
1087 i2c_set_clientdata(i2c, wm8960);
1089 ret = snd_soc_register_codec(&i2c->dev,
1090 &soc_codec_dev_wm8960, &wm8960_dai, 1);
1095 static int wm8960_i2c_remove(struct i2c_client *client)
1097 snd_soc_unregister_codec(&client->dev);
1101 static const struct i2c_device_id wm8960_i2c_id[] = {
1105 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
1107 static const struct of_device_id wm8960_of_match[] = {
1108 { .compatible = "wlf,wm8960", },
1111 MODULE_DEVICE_TABLE(of, wm8960_of_match);
1113 static struct i2c_driver wm8960_i2c_driver = {
1116 .owner = THIS_MODULE,
1117 .of_match_table = wm8960_of_match,
1119 .probe = wm8960_i2c_probe,
1120 .remove = wm8960_i2c_remove,
1121 .id_table = wm8960_i2c_id,
1124 module_i2c_driver(wm8960_i2c_driver);
1126 MODULE_DESCRIPTION("ASoC WM8960 driver");
1127 MODULE_AUTHOR("Liam Girdwood");
1128 MODULE_LICENSE("GPL");