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;
132 struct wm8960_data pdata;
135 #define wm8960_reset(c) regmap_write(c, WM8960_RESET, 0)
137 /* enumerated controls */
138 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
139 "Right Inverted", "Stereo Inversion"};
140 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
141 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
142 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
143 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
145 static const struct soc_enum wm8960_enum[] = {
146 SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
147 SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
148 SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
149 SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
150 SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
151 SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
154 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
156 static int wm8960_set_deemph(struct snd_soc_codec *codec)
158 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
161 /* If we're using deemphasis select the nearest available sample
164 if (wm8960->deemph) {
166 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
167 if (abs(deemph_settings[i] - wm8960->playback_fs) <
168 abs(deemph_settings[best] - wm8960->playback_fs))
177 dev_dbg(codec->dev, "Set deemphasis %d\n", val);
179 return snd_soc_update_bits(codec, WM8960_DACCTL1,
183 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
184 struct snd_ctl_elem_value *ucontrol)
186 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
187 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
189 ucontrol->value.integer.value[0] = wm8960->deemph;
193 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
194 struct snd_ctl_elem_value *ucontrol)
196 struct snd_soc_codec *codec = snd_soc_kcontrol_codec(kcontrol);
197 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
198 int deemph = ucontrol->value.integer.value[0];
203 wm8960->deemph = deemph;
205 return wm8960_set_deemph(codec);
208 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9750, 50, 1);
209 static const DECLARE_TLV_DB_SCALE(inpga_tlv, -1725, 75, 0);
210 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
211 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
212 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
213 static const DECLARE_TLV_DB_SCALE(lineinboost_tlv, -1500, 300, 1);
214 static const unsigned int micboost_tlv[] = {
215 TLV_DB_RANGE_HEAD(2),
216 0, 1, TLV_DB_SCALE_ITEM(0, 1300, 0),
217 2, 3, TLV_DB_SCALE_ITEM(2000, 900, 0),
220 static const struct snd_kcontrol_new wm8960_snd_controls[] = {
221 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
222 0, 63, 0, inpga_tlv),
223 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
225 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
228 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT3 Volume",
229 WM8960_INBMIX1, 4, 7, 0, lineinboost_tlv),
230 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT2 Volume",
231 WM8960_INBMIX1, 1, 7, 0, lineinboost_tlv),
232 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT3 Volume",
233 WM8960_INBMIX2, 4, 7, 0, lineinboost_tlv),
234 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT2 Volume",
235 WM8960_INBMIX2, 1, 7, 0, lineinboost_tlv),
236 SOC_SINGLE_TLV("Right Input Boost Mixer RINPUT1 Volume",
237 WM8960_RINPATH, 4, 3, 0, micboost_tlv),
238 SOC_SINGLE_TLV("Left Input Boost Mixer LINPUT1 Volume",
239 WM8960_LINPATH, 4, 3, 0, micboost_tlv),
241 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
244 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
246 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
249 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
251 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
253 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
254 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
256 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
257 SOC_ENUM("ADC Polarity", wm8960_enum[0]),
258 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
260 SOC_ENUM("DAC Polarity", wm8960_enum[1]),
261 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
262 wm8960_get_deemph, wm8960_put_deemph),
264 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
265 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
266 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
267 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
269 SOC_ENUM("ALC Function", wm8960_enum[4]),
270 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
271 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
272 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
273 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
274 SOC_ENUM("ALC Mode", wm8960_enum[5]),
275 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
276 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
278 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
279 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
281 SOC_DOUBLE_R_TLV("ADC PCM Capture Volume", WM8960_LADC, WM8960_RADC,
284 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
285 WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
286 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
287 WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
288 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
289 WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
290 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
291 WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
294 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
295 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
296 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
297 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
300 static const struct snd_kcontrol_new wm8960_lin[] = {
301 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
304 static const struct snd_kcontrol_new wm8960_rin_boost[] = {
305 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
306 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
307 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
310 static const struct snd_kcontrol_new wm8960_rin[] = {
311 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
314 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
315 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
316 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
317 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
320 static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
321 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
322 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
323 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
326 static const struct snd_kcontrol_new wm8960_mono_out[] = {
327 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
328 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
331 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
332 SND_SOC_DAPM_INPUT("LINPUT1"),
333 SND_SOC_DAPM_INPUT("RINPUT1"),
334 SND_SOC_DAPM_INPUT("LINPUT2"),
335 SND_SOC_DAPM_INPUT("RINPUT2"),
336 SND_SOC_DAPM_INPUT("LINPUT3"),
337 SND_SOC_DAPM_INPUT("RINPUT3"),
339 SND_SOC_DAPM_SUPPLY("MICB", WM8960_POWER1, 1, 0, NULL, 0),
341 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
342 wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
343 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
344 wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
346 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
347 wm8960_lin, ARRAY_SIZE(wm8960_lin)),
348 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
349 wm8960_rin, ARRAY_SIZE(wm8960_rin)),
351 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER1, 3, 0),
352 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER1, 2, 0),
354 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
355 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
357 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
358 &wm8960_loutput_mixer[0],
359 ARRAY_SIZE(wm8960_loutput_mixer)),
360 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
361 &wm8960_routput_mixer[0],
362 ARRAY_SIZE(wm8960_routput_mixer)),
364 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
365 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
367 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
368 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
370 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
371 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
373 SND_SOC_DAPM_OUTPUT("SPK_LP"),
374 SND_SOC_DAPM_OUTPUT("SPK_LN"),
375 SND_SOC_DAPM_OUTPUT("HP_L"),
376 SND_SOC_DAPM_OUTPUT("HP_R"),
377 SND_SOC_DAPM_OUTPUT("SPK_RP"),
378 SND_SOC_DAPM_OUTPUT("SPK_RN"),
379 SND_SOC_DAPM_OUTPUT("OUT3"),
382 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
383 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
385 ARRAY_SIZE(wm8960_mono_out)),
388 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
389 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
390 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
393 static const struct snd_soc_dapm_route audio_paths[] = {
394 { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
395 { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
396 { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
398 { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
399 { "Left Input Mixer", NULL, "LINPUT1", }, /* Really Boost Switch */
400 { "Left Input Mixer", NULL, "LINPUT2" },
401 { "Left Input Mixer", NULL, "LINPUT3" },
403 { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
404 { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
405 { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
407 { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
408 { "Right Input Mixer", NULL, "RINPUT1", }, /* Really Boost Switch */
409 { "Right Input Mixer", NULL, "RINPUT2" },
410 { "Right Input Mixer", NULL, "RINPUT3" },
412 { "Left ADC", NULL, "Left Input Mixer" },
413 { "Right ADC", NULL, "Right Input Mixer" },
415 { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
416 { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
417 { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
419 { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
420 { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
421 { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
423 { "LOUT1 PGA", NULL, "Left Output Mixer" },
424 { "ROUT1 PGA", NULL, "Right Output Mixer" },
426 { "HP_L", NULL, "LOUT1 PGA" },
427 { "HP_R", NULL, "ROUT1 PGA" },
429 { "Left Speaker PGA", NULL, "Left Output Mixer" },
430 { "Right Speaker PGA", NULL, "Right Output Mixer" },
432 { "Left Speaker Output", NULL, "Left Speaker PGA" },
433 { "Right Speaker Output", NULL, "Right Speaker PGA" },
435 { "SPK_LN", NULL, "Left Speaker Output" },
436 { "SPK_LP", NULL, "Left Speaker Output" },
437 { "SPK_RN", NULL, "Right Speaker Output" },
438 { "SPK_RP", NULL, "Right Speaker Output" },
441 static const struct snd_soc_dapm_route audio_paths_out3[] = {
442 { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
443 { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
445 { "OUT3", NULL, "Mono Output Mixer", }
448 static const struct snd_soc_dapm_route audio_paths_capless[] = {
449 { "HP_L", NULL, "OUT3 VMID" },
450 { "HP_R", NULL, "OUT3 VMID" },
452 { "OUT3 VMID", NULL, "Left Output Mixer" },
453 { "OUT3 VMID", NULL, "Right Output Mixer" },
456 static int wm8960_add_widgets(struct snd_soc_codec *codec)
458 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
459 struct wm8960_data *pdata = &wm8960->pdata;
460 struct snd_soc_dapm_context *dapm = snd_soc_codec_get_dapm(codec);
461 struct snd_soc_dapm_widget *w;
463 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets,
464 ARRAY_SIZE(wm8960_dapm_widgets));
466 snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));
468 /* In capless mode OUT3 is used to provide VMID for the
469 * headphone outputs, otherwise it is used as a mono mixer.
471 if (pdata && pdata->capless) {
472 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_capless,
473 ARRAY_SIZE(wm8960_dapm_widgets_capless));
475 snd_soc_dapm_add_routes(dapm, audio_paths_capless,
476 ARRAY_SIZE(audio_paths_capless));
478 snd_soc_dapm_new_controls(dapm, wm8960_dapm_widgets_out3,
479 ARRAY_SIZE(wm8960_dapm_widgets_out3));
481 snd_soc_dapm_add_routes(dapm, audio_paths_out3,
482 ARRAY_SIZE(audio_paths_out3));
485 /* We need to power up the headphone output stage out of
486 * sequence for capless mode. To save scanning the widget
487 * list each time to find the desired power state do so now
488 * and save the result.
490 list_for_each_entry(w, &codec->component.card->widgets, list) {
493 if (strcmp(w->name, "LOUT1 PGA") == 0)
495 if (strcmp(w->name, "ROUT1 PGA") == 0)
497 if (strcmp(w->name, "OUT3 VMID") == 0)
504 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
507 struct snd_soc_codec *codec = codec_dai->codec;
510 /* set master/slave audio interface */
511 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
512 case SND_SOC_DAIFMT_CBM_CFM:
515 case SND_SOC_DAIFMT_CBS_CFS:
521 /* interface format */
522 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
523 case SND_SOC_DAIFMT_I2S:
526 case SND_SOC_DAIFMT_RIGHT_J:
528 case SND_SOC_DAIFMT_LEFT_J:
531 case SND_SOC_DAIFMT_DSP_A:
534 case SND_SOC_DAIFMT_DSP_B:
541 /* clock inversion */
542 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
543 case SND_SOC_DAIFMT_NB_NF:
545 case SND_SOC_DAIFMT_IB_IF:
548 case SND_SOC_DAIFMT_IB_NF:
551 case SND_SOC_DAIFMT_NB_IF:
559 snd_soc_write(codec, WM8960_IFACE1, iface);
578 /* Multiply 256 for internal 256 div */
579 static const int dac_divs[] = { 256, 384, 512, 768, 1024, 1408, 1536 };
581 /* Multiply 10 to eliminate decimials */
582 static const int bclk_divs[] = {
583 10, 15, 20, 30, 40, 55, 60, 80, 110,
584 120, 160, 220, 240, 320, 320, 320
587 static void wm8960_configure_clocking(struct snd_soc_codec *codec,
590 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
591 u16 iface1 = snd_soc_read(codec, WM8960_IFACE1);
592 u16 iface2 = snd_soc_read(codec, WM8960_IFACE2);
596 if (!(iface1 & (1<<6))) {
598 "Codec is slave mode, no need to configure clock\n");
602 if (!wm8960->sysclk) {
603 dev_dbg(codec->dev, "No SYSCLK configured\n");
607 if (!wm8960->bclk || !lrclk) {
608 dev_dbg(codec->dev, "No audio clocks configured\n");
612 for (i = 0; i < ARRAY_SIZE(dac_divs); ++i) {
613 if (wm8960->sysclk == lrclk * dac_divs[i]) {
614 for (j = 0; j < ARRAY_SIZE(bclk_divs); ++j) {
615 sysclk = wm8960->bclk * bclk_divs[j] / 10;
616 if (wm8960->sysclk == sysclk)
619 if(j != ARRAY_SIZE(bclk_divs))
624 if (i == ARRAY_SIZE(dac_divs)) {
625 dev_err(codec->dev, "Unsupported sysclk %d\n", wm8960->sysclk);
630 * configure frame clock. If ADCLRC configure as GPIO pin, DACLRC
631 * pin is used as a frame clock for ADCs and DACs.
634 snd_soc_update_bits(codec, WM8960_CLOCK1, 0x7 << 3, i << 3);
636 snd_soc_update_bits(codec, WM8960_CLOCK1, 0x7 << 3, i << 3);
638 snd_soc_update_bits(codec, WM8960_CLOCK1, 0x7 << 6, i << 6);
640 /* configure bit clock */
641 snd_soc_update_bits(codec, WM8960_CLOCK2, 0xf, j);
644 static int wm8960_hw_params(struct snd_pcm_substream *substream,
645 struct snd_pcm_hw_params *params,
646 struct snd_soc_dai *dai)
648 struct snd_soc_codec *codec = dai->codec;
649 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
650 u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
651 bool tx = substream->stream == SNDRV_PCM_STREAM_PLAYBACK;
654 wm8960->bclk = snd_soc_params_to_bclk(params);
655 if (params_channels(params) == 1)
659 switch (params_width(params)) {
669 /* right justify mode does not support 32 word length */
670 if ((iface & 0x3) != 0) {
675 dev_err(codec->dev, "unsupported width %d\n",
676 params_width(params));
680 /* Update filters for the new rate */
681 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
682 wm8960->playback_fs = params_rate(params);
683 wm8960_set_deemph(codec);
685 for (i = 0; i < ARRAY_SIZE(alc_rates); i++)
686 if (alc_rates[i].rate == params_rate(params))
687 snd_soc_update_bits(codec,
693 snd_soc_write(codec, WM8960_IFACE1, iface);
695 wm8960_configure_clocking(codec, tx, params_rate(params));
700 static int wm8960_mute(struct snd_soc_dai *dai, int mute)
702 struct snd_soc_codec *codec = dai->codec;
705 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0x8);
707 snd_soc_update_bits(codec, WM8960_DACCTL1, 0x8, 0);
711 static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
712 enum snd_soc_bias_level level)
714 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
718 case SND_SOC_BIAS_ON:
721 case SND_SOC_BIAS_PREPARE:
722 switch (snd_soc_codec_get_bias_level(codec)) {
723 case SND_SOC_BIAS_STANDBY:
724 if (!IS_ERR(wm8960->mclk)) {
725 ret = clk_prepare_enable(wm8960->mclk);
728 "Failed to enable MCLK: %d\n",
734 /* Set VMID to 2x50k */
735 snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x80);
738 case SND_SOC_BIAS_ON:
739 if (!IS_ERR(wm8960->mclk))
740 clk_disable_unprepare(wm8960->mclk);
749 case SND_SOC_BIAS_STANDBY:
750 if (snd_soc_codec_get_bias_level(codec) == SND_SOC_BIAS_OFF) {
751 regcache_sync(wm8960->regmap);
753 /* Enable anti-pop features */
754 snd_soc_write(codec, WM8960_APOP1,
755 WM8960_POBCTRL | WM8960_SOFT_ST |
756 WM8960_BUFDCOPEN | WM8960_BUFIOEN);
758 /* Enable & ramp VMID at 2x50k */
759 snd_soc_update_bits(codec, WM8960_POWER1, 0x80, 0x80);
763 snd_soc_update_bits(codec, WM8960_POWER1, WM8960_VREF,
766 /* Disable anti-pop features */
767 snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
770 /* Set VMID to 2x250k */
771 snd_soc_update_bits(codec, WM8960_POWER1, 0x180, 0x100);
774 case SND_SOC_BIAS_OFF:
775 /* Enable anti-pop features */
776 snd_soc_write(codec, WM8960_APOP1,
777 WM8960_POBCTRL | WM8960_SOFT_ST |
778 WM8960_BUFDCOPEN | WM8960_BUFIOEN);
780 /* Disable VMID and VREF, let them discharge */
781 snd_soc_write(codec, WM8960_POWER1, 0);
789 static int wm8960_set_bias_level_capless(struct snd_soc_codec *codec,
790 enum snd_soc_bias_level level)
792 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
796 case SND_SOC_BIAS_ON:
799 case SND_SOC_BIAS_PREPARE:
800 switch (snd_soc_codec_get_bias_level(codec)) {
801 case SND_SOC_BIAS_STANDBY:
802 /* Enable anti pop mode */
803 snd_soc_update_bits(codec, WM8960_APOP1,
804 WM8960_POBCTRL | WM8960_SOFT_ST |
806 WM8960_POBCTRL | WM8960_SOFT_ST |
809 /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
811 if (wm8960->lout1 && wm8960->lout1->power)
812 reg |= WM8960_PWR2_LOUT1;
813 if (wm8960->rout1 && wm8960->rout1->power)
814 reg |= WM8960_PWR2_ROUT1;
815 if (wm8960->out3 && wm8960->out3->power)
816 reg |= WM8960_PWR2_OUT3;
817 snd_soc_update_bits(codec, WM8960_POWER2,
820 WM8960_PWR2_OUT3, reg);
822 /* Enable VMID at 2*50k */
823 snd_soc_update_bits(codec, WM8960_POWER1,
824 WM8960_VMID_MASK, 0x80);
830 snd_soc_update_bits(codec, WM8960_POWER1,
831 WM8960_VREF, WM8960_VREF);
835 if (!IS_ERR(wm8960->mclk)) {
836 ret = clk_prepare_enable(wm8960->mclk);
839 "Failed to enable MCLK: %d\n",
846 case SND_SOC_BIAS_ON:
847 if (!IS_ERR(wm8960->mclk))
848 clk_disable_unprepare(wm8960->mclk);
850 /* Enable anti-pop mode */
851 snd_soc_update_bits(codec, WM8960_APOP1,
852 WM8960_POBCTRL | WM8960_SOFT_ST |
854 WM8960_POBCTRL | WM8960_SOFT_ST |
857 /* Disable VMID and VREF */
858 snd_soc_update_bits(codec, WM8960_POWER1,
859 WM8960_VREF | WM8960_VMID_MASK, 0);
862 case SND_SOC_BIAS_OFF:
863 regcache_sync(wm8960->regmap);
870 case SND_SOC_BIAS_STANDBY:
871 switch (snd_soc_codec_get_bias_level(codec)) {
872 case SND_SOC_BIAS_PREPARE:
873 /* Disable HP discharge */
874 snd_soc_update_bits(codec, WM8960_APOP2,
875 WM8960_DISOP | WM8960_DRES_MASK,
878 /* Disable anti-pop features */
879 snd_soc_update_bits(codec, WM8960_APOP1,
880 WM8960_POBCTRL | WM8960_SOFT_ST |
882 WM8960_POBCTRL | WM8960_SOFT_ST |
891 case SND_SOC_BIAS_OFF:
905 /* The size in bits of the pll divide multiplied by 10
906 * to allow rounding later */
907 #define FIXED_PLL_SIZE ((1 << 24) * 10)
909 static int pll_factors(unsigned int source, unsigned int target,
910 struct _pll_div *pll_div)
912 unsigned long long Kpart;
913 unsigned int K, Ndiv, Nmod;
915 pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
917 /* Scale up target to PLL operating frequency */
920 Ndiv = target / source;
923 pll_div->pre_div = 1;
924 Ndiv = target / source;
926 pll_div->pre_div = 0;
928 if ((Ndiv < 6) || (Ndiv > 12)) {
929 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
934 Nmod = target % source;
935 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
937 do_div(Kpart, source);
939 K = Kpart & 0xFFFFFFFF;
941 /* Check if we need to round */
945 /* Move down to proper range now rounding is done */
950 pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
951 pll_div->n, pll_div->k, pll_div->pre_div);
956 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
957 int source, unsigned int freq_in, unsigned int freq_out)
959 struct snd_soc_codec *codec = codec_dai->codec;
961 static struct _pll_div pll_div;
964 if (freq_in && freq_out) {
965 ret = pll_factors(freq_in, freq_out, &pll_div);
970 /* Disable the PLL: even if we are changing the frequency the
971 * PLL needs to be disabled while we do so. */
972 snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0);
973 snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0);
975 if (!freq_in || !freq_out)
978 reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
979 reg |= pll_div.pre_div << 4;
985 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 16) & 0xff);
986 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 8) & 0xff);
987 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0xff);
989 snd_soc_write(codec, WM8960_PLL1, reg);
992 snd_soc_update_bits(codec, WM8960_POWER2, 0x1, 0x1);
994 snd_soc_update_bits(codec, WM8960_CLOCK1, 0x1, 0x1);
999 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
1000 int div_id, int div)
1002 struct snd_soc_codec *codec = codec_dai->codec;
1006 case WM8960_SYSCLKDIV:
1007 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
1008 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
1011 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
1012 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
1014 case WM8960_OPCLKDIV:
1015 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
1016 snd_soc_write(codec, WM8960_PLL1, reg | div);
1018 case WM8960_DCLKDIV:
1019 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
1020 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
1022 case WM8960_TOCLKSEL:
1023 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
1024 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
1033 static int wm8960_set_bias_level(struct snd_soc_codec *codec,
1034 enum snd_soc_bias_level level)
1036 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
1038 return wm8960->set_bias_level(codec, level);
1041 static int wm8960_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
1042 unsigned int freq, int dir)
1044 struct snd_soc_codec *codec = dai->codec;
1045 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
1048 case WM8960_SYSCLK_MCLK:
1049 snd_soc_update_bits(codec, WM8960_CLOCK1,
1050 0x1, WM8960_SYSCLK_MCLK);
1052 case WM8960_SYSCLK_PLL:
1053 snd_soc_update_bits(codec, WM8960_CLOCK1,
1054 0x1, WM8960_SYSCLK_PLL);
1060 wm8960->sysclk = freq;
1065 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
1067 #define WM8960_FORMATS \
1068 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
1069 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
1071 static const struct snd_soc_dai_ops wm8960_dai_ops = {
1072 .hw_params = wm8960_hw_params,
1073 .digital_mute = wm8960_mute,
1074 .set_fmt = wm8960_set_dai_fmt,
1075 .set_clkdiv = wm8960_set_dai_clkdiv,
1076 .set_pll = wm8960_set_dai_pll,
1077 .set_sysclk = wm8960_set_dai_sysclk,
1080 static struct snd_soc_dai_driver wm8960_dai = {
1081 .name = "wm8960-hifi",
1083 .stream_name = "Playback",
1086 .rates = WM8960_RATES,
1087 .formats = WM8960_FORMATS,},
1089 .stream_name = "Capture",
1092 .rates = WM8960_RATES,
1093 .formats = WM8960_FORMATS,},
1094 .ops = &wm8960_dai_ops,
1095 .symmetric_rates = 1,
1098 static int wm8960_probe(struct snd_soc_codec *codec)
1100 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
1101 struct wm8960_data *pdata = &wm8960->pdata;
1104 wm8960->set_bias_level = wm8960_set_bias_level_capless;
1106 wm8960->set_bias_level = wm8960_set_bias_level_out3;
1108 snd_soc_add_codec_controls(codec, wm8960_snd_controls,
1109 ARRAY_SIZE(wm8960_snd_controls));
1110 wm8960_add_widgets(codec);
1115 static struct snd_soc_codec_driver soc_codec_dev_wm8960 = {
1116 .probe = wm8960_probe,
1117 .set_bias_level = wm8960_set_bias_level,
1118 .suspend_bias_off = true,
1121 static const struct regmap_config wm8960_regmap = {
1124 .max_register = WM8960_PLL4,
1126 .reg_defaults = wm8960_reg_defaults,
1127 .num_reg_defaults = ARRAY_SIZE(wm8960_reg_defaults),
1128 .cache_type = REGCACHE_RBTREE,
1130 .volatile_reg = wm8960_volatile,
1133 static void wm8960_set_pdata_from_of(struct i2c_client *i2c,
1134 struct wm8960_data *pdata)
1136 const struct device_node *np = i2c->dev.of_node;
1138 if (of_property_read_bool(np, "wlf,capless"))
1139 pdata->capless = true;
1141 if (of_property_read_bool(np, "wlf,shared-lrclk"))
1142 pdata->shared_lrclk = true;
1145 static int wm8960_i2c_probe(struct i2c_client *i2c,
1146 const struct i2c_device_id *id)
1148 struct wm8960_data *pdata = dev_get_platdata(&i2c->dev);
1149 struct wm8960_priv *wm8960;
1152 wm8960 = devm_kzalloc(&i2c->dev, sizeof(struct wm8960_priv),
1157 wm8960->mclk = devm_clk_get(&i2c->dev, "mclk");
1158 if (IS_ERR(wm8960->mclk)) {
1159 if (PTR_ERR(wm8960->mclk) == -EPROBE_DEFER)
1160 return -EPROBE_DEFER;
1163 wm8960->regmap = devm_regmap_init_i2c(i2c, &wm8960_regmap);
1164 if (IS_ERR(wm8960->regmap))
1165 return PTR_ERR(wm8960->regmap);
1168 memcpy(&wm8960->pdata, pdata, sizeof(struct wm8960_data));
1169 else if (i2c->dev.of_node)
1170 wm8960_set_pdata_from_of(i2c, &wm8960->pdata);
1172 ret = wm8960_reset(wm8960->regmap);
1174 dev_err(&i2c->dev, "Failed to issue reset\n");
1178 if (wm8960->pdata.shared_lrclk) {
1179 ret = regmap_update_bits(wm8960->regmap, WM8960_ADDCTL2,
1182 dev_err(&i2c->dev, "Failed to enable LRCM: %d\n",
1188 /* Latch the update bits */
1189 regmap_update_bits(wm8960->regmap, WM8960_LINVOL, 0x100, 0x100);
1190 regmap_update_bits(wm8960->regmap, WM8960_RINVOL, 0x100, 0x100);
1191 regmap_update_bits(wm8960->regmap, WM8960_LADC, 0x100, 0x100);
1192 regmap_update_bits(wm8960->regmap, WM8960_RADC, 0x100, 0x100);
1193 regmap_update_bits(wm8960->regmap, WM8960_LDAC, 0x100, 0x100);
1194 regmap_update_bits(wm8960->regmap, WM8960_RDAC, 0x100, 0x100);
1195 regmap_update_bits(wm8960->regmap, WM8960_LOUT1, 0x100, 0x100);
1196 regmap_update_bits(wm8960->regmap, WM8960_ROUT1, 0x100, 0x100);
1197 regmap_update_bits(wm8960->regmap, WM8960_LOUT2, 0x100, 0x100);
1198 regmap_update_bits(wm8960->regmap, WM8960_ROUT2, 0x100, 0x100);
1200 i2c_set_clientdata(i2c, wm8960);
1202 ret = snd_soc_register_codec(&i2c->dev,
1203 &soc_codec_dev_wm8960, &wm8960_dai, 1);
1208 static int wm8960_i2c_remove(struct i2c_client *client)
1210 snd_soc_unregister_codec(&client->dev);
1214 static const struct i2c_device_id wm8960_i2c_id[] = {
1218 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
1220 static const struct of_device_id wm8960_of_match[] = {
1221 { .compatible = "wlf,wm8960", },
1224 MODULE_DEVICE_TABLE(of, wm8960_of_match);
1226 static struct i2c_driver wm8960_i2c_driver = {
1229 .owner = THIS_MODULE,
1230 .of_match_table = wm8960_of_match,
1232 .probe = wm8960_i2c_probe,
1233 .remove = wm8960_i2c_remove,
1234 .id_table = wm8960_i2c_id,
1237 module_i2c_driver(wm8960_i2c_driver);
1239 MODULE_DESCRIPTION("ASoC WM8960 driver");
1240 MODULE_AUTHOR("Liam Girdwood");
1241 MODULE_LICENSE("GPL");