2 * wm8960.c -- WM8960 ALSA SoC Audio driver
4 * Author: Liam Girdwood
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.
11 #include <linux/module.h>
12 #include <linux/moduleparam.h>
13 #include <linux/init.h>
14 #include <linux/delay.h>
16 #include <linux/i2c.h>
17 #include <linux/platform_device.h>
18 #include <linux/slab.h>
19 #include <sound/core.h>
20 #include <sound/pcm.h>
21 #include <sound/pcm_params.h>
22 #include <sound/soc.h>
23 #include <sound/soc-dapm.h>
24 #include <sound/initval.h>
25 #include <sound/tlv.h>
26 #include <sound/wm8960.h>
30 #define AUDIO_NAME "wm8960"
33 #define WM8960_VMID_MASK 0x180
34 #define WM8960_VREF 0x40
37 #define WM8960_PWR2_LOUT1 0x40
38 #define WM8960_PWR2_ROUT1 0x20
39 #define WM8960_PWR2_OUT3 0x02
41 /* R28 - Anti-pop 1 */
42 #define WM8960_POBCTRL 0x80
43 #define WM8960_BUFDCOPEN 0x10
44 #define WM8960_BUFIOEN 0x08
45 #define WM8960_SOFT_ST 0x04
46 #define WM8960_HPSTBY 0x01
48 /* R29 - Anti-pop 2 */
49 #define WM8960_DISOP 0x40
50 #define WM8960_DRES_MASK 0x30
53 * wm8960 register cache
54 * We can't read the WM8960 register space when we are
55 * using 2 wire for device control, so we cache them instead.
57 static const u16 wm8960_reg[WM8960_CACHEREGNUM] = {
58 0x0097, 0x0097, 0x0000, 0x0000,
59 0x0000, 0x0008, 0x0000, 0x000a,
60 0x01c0, 0x0000, 0x00ff, 0x00ff,
61 0x0000, 0x0000, 0x0000, 0x0000,
62 0x0000, 0x007b, 0x0100, 0x0032,
63 0x0000, 0x00c3, 0x00c3, 0x01c0,
64 0x0000, 0x0000, 0x0000, 0x0000,
65 0x0000, 0x0000, 0x0000, 0x0000,
66 0x0100, 0x0100, 0x0050, 0x0050,
67 0x0050, 0x0050, 0x0000, 0x0000,
68 0x0000, 0x0000, 0x0040, 0x0000,
69 0x0000, 0x0050, 0x0050, 0x0000,
70 0x0002, 0x0037, 0x004d, 0x0080,
71 0x0008, 0x0031, 0x0026, 0x00e9,
75 u16 reg_cache[WM8960_CACHEREGNUM];
76 enum snd_soc_control_type control_type;
78 int (*set_bias_level)(struct snd_soc_codec *,
79 enum snd_soc_bias_level level);
80 struct snd_soc_dapm_widget *lout1;
81 struct snd_soc_dapm_widget *rout1;
82 struct snd_soc_dapm_widget *out3;
87 #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
89 /* enumerated controls */
90 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
91 "Right Inverted", "Stereo Inversion"};
92 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
93 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
94 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
95 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
97 static const struct soc_enum wm8960_enum[] = {
98 SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
99 SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
100 SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
101 SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
102 SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
103 SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
106 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
108 static int wm8960_set_deemph(struct snd_soc_codec *codec)
110 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
113 /* If we're using deemphasis select the nearest available sample
116 if (wm8960->deemph) {
118 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
119 if (abs(deemph_settings[i] - wm8960->playback_fs) <
120 abs(deemph_settings[best] - wm8960->playback_fs))
129 dev_dbg(codec->dev, "Set deemphasis %d\n", val);
131 return snd_soc_update_bits(codec, WM8960_DACCTL1,
135 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
136 struct snd_ctl_elem_value *ucontrol)
138 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
139 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
141 ucontrol->value.enumerated.item[0] = wm8960->deemph;
145 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
146 struct snd_ctl_elem_value *ucontrol)
148 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
149 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
150 int deemph = ucontrol->value.enumerated.item[0];
155 wm8960->deemph = deemph;
157 return wm8960_set_deemph(codec);
160 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
161 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
162 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
163 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
165 static const struct snd_kcontrol_new wm8960_snd_controls[] = {
166 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
168 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
170 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
173 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
176 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
178 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
181 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
183 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
185 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
186 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
188 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
189 SOC_ENUM("ADC Polarity", wm8960_enum[0]),
190 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
192 SOC_ENUM("DAC Polarity", wm8960_enum[2]),
193 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
194 wm8960_get_deemph, wm8960_put_deemph),
196 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
197 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
198 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
199 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
201 SOC_ENUM("ALC Function", wm8960_enum[4]),
202 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
203 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
204 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
205 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
206 SOC_ENUM("ALC Mode", wm8960_enum[5]),
207 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
208 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
210 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
211 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
213 SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH,
216 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
217 WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
218 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
219 WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
220 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
221 WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
222 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
223 WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
226 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
227 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
228 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
229 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
232 static const struct snd_kcontrol_new wm8960_lin[] = {
233 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
236 static const struct snd_kcontrol_new wm8960_rin_boost[] = {
237 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
238 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
239 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
242 static const struct snd_kcontrol_new wm8960_rin[] = {
243 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
246 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
247 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
248 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
249 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
252 static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
253 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
254 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
255 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
258 static const struct snd_kcontrol_new wm8960_mono_out[] = {
259 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
260 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
263 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
264 SND_SOC_DAPM_INPUT("LINPUT1"),
265 SND_SOC_DAPM_INPUT("RINPUT1"),
266 SND_SOC_DAPM_INPUT("LINPUT2"),
267 SND_SOC_DAPM_INPUT("RINPUT2"),
268 SND_SOC_DAPM_INPUT("LINPUT3"),
269 SND_SOC_DAPM_INPUT("RINPUT3"),
271 SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0),
273 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
274 wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
275 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
276 wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
278 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
279 wm8960_lin, ARRAY_SIZE(wm8960_lin)),
280 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
281 wm8960_rin, ARRAY_SIZE(wm8960_rin)),
283 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0),
284 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0),
286 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
287 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
289 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
290 &wm8960_loutput_mixer[0],
291 ARRAY_SIZE(wm8960_loutput_mixer)),
292 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
293 &wm8960_routput_mixer[0],
294 ARRAY_SIZE(wm8960_routput_mixer)),
296 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
297 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
299 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
300 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
302 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
303 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
305 SND_SOC_DAPM_OUTPUT("SPK_LP"),
306 SND_SOC_DAPM_OUTPUT("SPK_LN"),
307 SND_SOC_DAPM_OUTPUT("HP_L"),
308 SND_SOC_DAPM_OUTPUT("HP_R"),
309 SND_SOC_DAPM_OUTPUT("SPK_RP"),
310 SND_SOC_DAPM_OUTPUT("SPK_RN"),
311 SND_SOC_DAPM_OUTPUT("OUT3"),
314 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
315 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
317 ARRAY_SIZE(wm8960_mono_out)),
320 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
321 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
322 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
325 static const struct snd_soc_dapm_route audio_paths[] = {
326 { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
327 { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
328 { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
330 { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
331 { "Left Input Mixer", NULL, "LINPUT1", }, /* Really Boost Switch */
332 { "Left Input Mixer", NULL, "LINPUT2" },
333 { "Left Input Mixer", NULL, "LINPUT3" },
335 { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
336 { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
337 { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
339 { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
340 { "Right Input Mixer", NULL, "RINPUT1", }, /* Really Boost Switch */
341 { "Right Input Mixer", NULL, "RINPUT2" },
342 { "Right Input Mixer", NULL, "LINPUT3" },
344 { "Left ADC", NULL, "Left Input Mixer" },
345 { "Right ADC", NULL, "Right Input Mixer" },
347 { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
348 { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
349 { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
351 { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
352 { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
353 { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
355 { "LOUT1 PGA", NULL, "Left Output Mixer" },
356 { "ROUT1 PGA", NULL, "Right Output Mixer" },
358 { "HP_L", NULL, "LOUT1 PGA" },
359 { "HP_R", NULL, "ROUT1 PGA" },
361 { "Left Speaker PGA", NULL, "Left Output Mixer" },
362 { "Right Speaker PGA", NULL, "Right Output Mixer" },
364 { "Left Speaker Output", NULL, "Left Speaker PGA" },
365 { "Right Speaker Output", NULL, "Right Speaker PGA" },
367 { "SPK_LN", NULL, "Left Speaker Output" },
368 { "SPK_LP", NULL, "Left Speaker Output" },
369 { "SPK_RN", NULL, "Right Speaker Output" },
370 { "SPK_RP", NULL, "Right Speaker Output" },
373 static const struct snd_soc_dapm_route audio_paths_out3[] = {
374 { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
375 { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
377 { "OUT3", NULL, "Mono Output Mixer", }
380 static const struct snd_soc_dapm_route audio_paths_capless[] = {
381 { "HP_L", NULL, "OUT3 VMID" },
382 { "HP_R", NULL, "OUT3 VMID" },
384 { "OUT3 VMID", NULL, "Left Output Mixer" },
385 { "OUT3 VMID", NULL, "Right Output Mixer" },
388 static int wm8960_add_widgets(struct snd_soc_codec *codec)
390 struct wm8960_data *pdata = codec->dev->platform_data;
391 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
392 struct snd_soc_dapm_widget *w;
394 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets,
395 ARRAY_SIZE(wm8960_dapm_widgets));
397 snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
399 /* In capless mode OUT3 is used to provide VMID for the
400 * headphone outputs, otherwise it is used as a mono mixer.
402 if (pdata && pdata->capless) {
403 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets_capless,
404 ARRAY_SIZE(wm8960_dapm_widgets_capless));
406 snd_soc_dapm_add_routes(codec, audio_paths_capless,
407 ARRAY_SIZE(audio_paths_capless));
409 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets_out3,
410 ARRAY_SIZE(wm8960_dapm_widgets_out3));
412 snd_soc_dapm_add_routes(codec, audio_paths_out3,
413 ARRAY_SIZE(audio_paths_out3));
416 /* We need to power up the headphone output stage out of
417 * sequence for capless mode. To save scanning the widget
418 * list each time to find the desired power state do so now
419 * and save the result.
421 list_for_each_entry(w, &codec->dapm_widgets, list) {
422 if (strcmp(w->name, "LOUT1 PGA") == 0)
424 if (strcmp(w->name, "ROUT1 PGA") == 0)
426 if (strcmp(w->name, "OUT3 VMID") == 0)
433 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
436 struct snd_soc_codec *codec = codec_dai->codec;
439 /* set master/slave audio interface */
440 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
441 case SND_SOC_DAIFMT_CBM_CFM:
444 case SND_SOC_DAIFMT_CBS_CFS:
450 /* interface format */
451 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
452 case SND_SOC_DAIFMT_I2S:
455 case SND_SOC_DAIFMT_RIGHT_J:
457 case SND_SOC_DAIFMT_LEFT_J:
460 case SND_SOC_DAIFMT_DSP_A:
463 case SND_SOC_DAIFMT_DSP_B:
470 /* clock inversion */
471 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
472 case SND_SOC_DAIFMT_NB_NF:
474 case SND_SOC_DAIFMT_IB_IF:
477 case SND_SOC_DAIFMT_IB_NF:
480 case SND_SOC_DAIFMT_NB_IF:
488 snd_soc_write(codec, WM8960_IFACE1, iface);
507 static int wm8960_hw_params(struct snd_pcm_substream *substream,
508 struct snd_pcm_hw_params *params,
509 struct snd_soc_dai *dai)
511 struct snd_soc_pcm_runtime *rtd = substream->private_data;
512 struct snd_soc_codec *codec = rtd->codec;
513 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
514 u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3;
518 switch (params_format(params)) {
519 case SNDRV_PCM_FORMAT_S16_LE:
521 case SNDRV_PCM_FORMAT_S20_3LE:
524 case SNDRV_PCM_FORMAT_S24_LE:
529 /* Update filters for the new rate */
530 if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
531 wm8960->playback_fs = params_rate(params);
532 wm8960_set_deemph(codec);
534 for (i = 0; i < ARRAY_SIZE(alc_rates); i++)
535 if (alc_rates[i].rate == params_rate(params))
536 snd_soc_update_bits(codec,
542 snd_soc_write(codec, WM8960_IFACE1, iface);
546 static int wm8960_mute(struct snd_soc_dai *dai, int mute)
548 struct snd_soc_codec *codec = dai->codec;
549 u16 mute_reg = snd_soc_read(codec, WM8960_DACCTL1) & 0xfff7;
552 snd_soc_write(codec, WM8960_DACCTL1, mute_reg | 0x8);
554 snd_soc_write(codec, WM8960_DACCTL1, mute_reg);
558 static int wm8960_set_bias_level_out3(struct snd_soc_codec *codec,
559 enum snd_soc_bias_level level)
564 case SND_SOC_BIAS_ON:
567 case SND_SOC_BIAS_PREPARE:
568 /* Set VMID to 2x50k */
569 reg = snd_soc_read(codec, WM8960_POWER1);
572 snd_soc_write(codec, WM8960_POWER1, reg);
575 case SND_SOC_BIAS_STANDBY:
576 if (codec->bias_level == SND_SOC_BIAS_OFF) {
577 /* Enable anti-pop features */
578 snd_soc_write(codec, WM8960_APOP1,
579 WM8960_POBCTRL | WM8960_SOFT_ST |
580 WM8960_BUFDCOPEN | WM8960_BUFIOEN);
582 /* Enable & ramp VMID at 2x50k */
583 reg = snd_soc_read(codec, WM8960_POWER1);
585 snd_soc_write(codec, WM8960_POWER1, reg);
589 snd_soc_write(codec, WM8960_POWER1, reg | WM8960_VREF);
591 /* Disable anti-pop features */
592 snd_soc_write(codec, WM8960_APOP1, WM8960_BUFIOEN);
595 /* Set VMID to 2x250k */
596 reg = snd_soc_read(codec, WM8960_POWER1);
599 snd_soc_write(codec, WM8960_POWER1, reg);
602 case SND_SOC_BIAS_OFF:
603 /* Enable anti-pop features */
604 snd_soc_write(codec, WM8960_APOP1,
605 WM8960_POBCTRL | WM8960_SOFT_ST |
606 WM8960_BUFDCOPEN | WM8960_BUFIOEN);
608 /* Disable VMID and VREF, let them discharge */
609 snd_soc_write(codec, WM8960_POWER1, 0);
614 codec->bias_level = level;
619 static int wm8960_set_bias_level_capless(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->bias_level) {
631 case SND_SOC_BIAS_STANDBY:
632 /* Enable anti pop mode */
633 snd_soc_update_bits(codec, WM8960_APOP1,
634 WM8960_POBCTRL | WM8960_SOFT_ST |
636 WM8960_POBCTRL | WM8960_SOFT_ST |
639 /* Enable LOUT1, ROUT1 and OUT3 if they're enabled */
641 if (wm8960->lout1 && wm8960->lout1->power)
642 reg |= WM8960_PWR2_LOUT1;
643 if (wm8960->rout1 && wm8960->rout1->power)
644 reg |= WM8960_PWR2_ROUT1;
645 if (wm8960->out3 && wm8960->out3->power)
646 reg |= WM8960_PWR2_OUT3;
647 snd_soc_update_bits(codec, WM8960_POWER2,
650 WM8960_PWR2_OUT3, reg);
652 /* Enable VMID at 2*50k */
653 snd_soc_update_bits(codec, WM8960_POWER1,
654 WM8960_VMID_MASK, 0x80);
660 snd_soc_update_bits(codec, WM8960_POWER1,
661 WM8960_VREF, WM8960_VREF);
666 case SND_SOC_BIAS_ON:
667 /* Enable anti-pop mode */
668 snd_soc_update_bits(codec, WM8960_APOP1,
669 WM8960_POBCTRL | WM8960_SOFT_ST |
671 WM8960_POBCTRL | WM8960_SOFT_ST |
674 /* Disable VMID and VREF */
675 snd_soc_update_bits(codec, WM8960_POWER1,
676 WM8960_VREF | WM8960_VMID_MASK, 0);
684 case SND_SOC_BIAS_STANDBY:
685 switch (codec->bias_level) {
686 case SND_SOC_BIAS_PREPARE:
687 /* Disable HP discharge */
688 snd_soc_update_bits(codec, WM8960_APOP2,
689 WM8960_DISOP | WM8960_DRES_MASK,
692 /* Disable anti-pop features */
693 snd_soc_update_bits(codec, WM8960_APOP1,
694 WM8960_POBCTRL | WM8960_SOFT_ST |
696 WM8960_POBCTRL | WM8960_SOFT_ST |
705 case SND_SOC_BIAS_OFF:
709 codec->bias_level = level;
721 /* The size in bits of the pll divide multiplied by 10
722 * to allow rounding later */
723 #define FIXED_PLL_SIZE ((1 << 24) * 10)
725 static int pll_factors(unsigned int source, unsigned int target,
726 struct _pll_div *pll_div)
728 unsigned long long Kpart;
729 unsigned int K, Ndiv, Nmod;
731 pr_debug("WM8960 PLL: setting %dHz->%dHz\n", source, target);
733 /* Scale up target to PLL operating frequency */
736 Ndiv = target / source;
739 pll_div->pre_div = 1;
740 Ndiv = target / source;
742 pll_div->pre_div = 0;
744 if ((Ndiv < 6) || (Ndiv > 12)) {
745 pr_err("WM8960 PLL: Unsupported N=%d\n", Ndiv);
750 Nmod = target % source;
751 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
753 do_div(Kpart, source);
755 K = Kpart & 0xFFFFFFFF;
757 /* Check if we need to round */
761 /* Move down to proper range now rounding is done */
766 pr_debug("WM8960 PLL: N=%x K=%x pre_div=%d\n",
767 pll_div->n, pll_div->k, pll_div->pre_div);
772 static int wm8960_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
773 int source, unsigned int freq_in, unsigned int freq_out)
775 struct snd_soc_codec *codec = codec_dai->codec;
777 static struct _pll_div pll_div;
780 if (freq_in && freq_out) {
781 ret = pll_factors(freq_in, freq_out, &pll_div);
786 /* Disable the PLL: even if we are changing the frequency the
787 * PLL needs to be disabled while we do so. */
788 snd_soc_write(codec, WM8960_CLOCK1,
789 snd_soc_read(codec, WM8960_CLOCK1) & ~1);
790 snd_soc_write(codec, WM8960_POWER2,
791 snd_soc_read(codec, WM8960_POWER2) & ~1);
793 if (!freq_in || !freq_out)
796 reg = snd_soc_read(codec, WM8960_PLL1) & ~0x3f;
797 reg |= pll_div.pre_div << 4;
803 snd_soc_write(codec, WM8960_PLL2, (pll_div.k >> 18) & 0x3f);
804 snd_soc_write(codec, WM8960_PLL3, (pll_div.k >> 9) & 0x1ff);
805 snd_soc_write(codec, WM8960_PLL4, pll_div.k & 0x1ff);
807 snd_soc_write(codec, WM8960_PLL1, reg);
810 snd_soc_write(codec, WM8960_POWER2,
811 snd_soc_read(codec, WM8960_POWER2) | 1);
813 snd_soc_write(codec, WM8960_CLOCK1,
814 snd_soc_read(codec, WM8960_CLOCK1) | 1);
819 static int wm8960_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
822 struct snd_soc_codec *codec = codec_dai->codec;
826 case WM8960_SYSCLKDIV:
827 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1f9;
828 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
831 reg = snd_soc_read(codec, WM8960_CLOCK1) & 0x1c7;
832 snd_soc_write(codec, WM8960_CLOCK1, reg | div);
834 case WM8960_OPCLKDIV:
835 reg = snd_soc_read(codec, WM8960_PLL1) & 0x03f;
836 snd_soc_write(codec, WM8960_PLL1, reg | div);
839 reg = snd_soc_read(codec, WM8960_CLOCK2) & 0x03f;
840 snd_soc_write(codec, WM8960_CLOCK2, reg | div);
842 case WM8960_TOCLKSEL:
843 reg = snd_soc_read(codec, WM8960_ADDCTL1) & 0x1fd;
844 snd_soc_write(codec, WM8960_ADDCTL1, reg | div);
853 static int wm8960_set_bias_level(struct snd_soc_codec *codec,
854 enum snd_soc_bias_level level)
856 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
858 return wm8960->set_bias_level(codec, level);
861 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
863 #define WM8960_FORMATS \
864 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
865 SNDRV_PCM_FMTBIT_S24_LE)
867 static struct snd_soc_dai_ops wm8960_dai_ops = {
868 .hw_params = wm8960_hw_params,
869 .digital_mute = wm8960_mute,
870 .set_fmt = wm8960_set_dai_fmt,
871 .set_clkdiv = wm8960_set_dai_clkdiv,
872 .set_pll = wm8960_set_dai_pll,
875 static struct snd_soc_dai_driver wm8960_dai = {
876 .name = "wm8960-hifi",
878 .stream_name = "Playback",
881 .rates = WM8960_RATES,
882 .formats = WM8960_FORMATS,},
884 .stream_name = "Capture",
887 .rates = WM8960_RATES,
888 .formats = WM8960_FORMATS,},
889 .ops = &wm8960_dai_ops,
890 .symmetric_rates = 1,
893 static int wm8960_suspend(struct snd_soc_codec *codec, pm_message_t state)
895 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
897 wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
901 static int wm8960_resume(struct snd_soc_codec *codec)
903 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
906 u16 *cache = codec->reg_cache;
908 /* Sync reg_cache with the hardware */
909 for (i = 0; i < ARRAY_SIZE(wm8960_reg); i++) {
910 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
911 data[1] = cache[i] & 0x00ff;
912 codec->hw_write(codec->control_data, data, 2);
915 wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
919 static int wm8960_probe(struct snd_soc_codec *codec)
921 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
922 struct wm8960_data *pdata = dev_get_platdata(codec->dev);
926 wm8960->set_bias_level = wm8960_set_bias_level_out3;
927 codec->control_data = wm8960->control_data;
930 dev_warn(codec->dev, "No platform data supplied\n");
932 if (pdata->dres > WM8960_DRES_MAX) {
933 dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres);
938 wm8960->set_bias_level = wm8960_set_bias_level_capless;
941 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8960->control_type);
943 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
947 ret = wm8960_reset(codec);
949 dev_err(codec->dev, "Failed to issue reset\n");
953 wm8960->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
955 /* Latch the update bits */
956 reg = snd_soc_read(codec, WM8960_LINVOL);
957 snd_soc_write(codec, WM8960_LINVOL, reg | 0x100);
958 reg = snd_soc_read(codec, WM8960_RINVOL);
959 snd_soc_write(codec, WM8960_RINVOL, reg | 0x100);
960 reg = snd_soc_read(codec, WM8960_LADC);
961 snd_soc_write(codec, WM8960_LADC, reg | 0x100);
962 reg = snd_soc_read(codec, WM8960_RADC);
963 snd_soc_write(codec, WM8960_RADC, reg | 0x100);
964 reg = snd_soc_read(codec, WM8960_LDAC);
965 snd_soc_write(codec, WM8960_LDAC, reg | 0x100);
966 reg = snd_soc_read(codec, WM8960_RDAC);
967 snd_soc_write(codec, WM8960_RDAC, reg | 0x100);
968 reg = snd_soc_read(codec, WM8960_LOUT1);
969 snd_soc_write(codec, WM8960_LOUT1, reg | 0x100);
970 reg = snd_soc_read(codec, WM8960_ROUT1);
971 snd_soc_write(codec, WM8960_ROUT1, reg | 0x100);
972 reg = snd_soc_read(codec, WM8960_LOUT2);
973 snd_soc_write(codec, WM8960_LOUT2, reg | 0x100);
974 reg = snd_soc_read(codec, WM8960_ROUT2);
975 snd_soc_write(codec, WM8960_ROUT2, reg | 0x100);
977 snd_soc_add_controls(codec, wm8960_snd_controls,
978 ARRAY_SIZE(wm8960_snd_controls));
979 wm8960_add_widgets(codec);
984 /* power down chip */
985 static int wm8960_remove(struct snd_soc_codec *codec)
987 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
989 wm8960->set_bias_level(codec, SND_SOC_BIAS_OFF);
993 static struct snd_soc_codec_driver soc_codec_dev_wm8960 = {
994 .probe = wm8960_probe,
995 .remove = wm8960_remove,
996 .suspend = wm8960_suspend,
997 .resume = wm8960_resume,
998 .set_bias_level = wm8960_set_bias_level,
999 .reg_cache_size = ARRAY_SIZE(wm8960_reg),
1000 .reg_word_size = sizeof(u16),
1001 .reg_cache_default = wm8960_reg,
1004 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1005 static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
1006 const struct i2c_device_id *id)
1008 struct wm8960_priv *wm8960;
1011 wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL);
1015 i2c_set_clientdata(i2c, wm8960);
1016 wm8960->control_type = SND_SOC_I2C;
1017 wm8960->control_data = i2c;
1019 ret = snd_soc_register_codec(&i2c->dev,
1020 &soc_codec_dev_wm8960, &wm8960_dai, 1);
1026 static __devexit int wm8960_i2c_remove(struct i2c_client *client)
1028 snd_soc_unregister_codec(&client->dev);
1029 kfree(i2c_get_clientdata(client));
1033 static const struct i2c_device_id wm8960_i2c_id[] = {
1037 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
1039 static struct i2c_driver wm8960_i2c_driver = {
1041 .name = "wm8960-codec",
1042 .owner = THIS_MODULE,
1044 .probe = wm8960_i2c_probe,
1045 .remove = __devexit_p(wm8960_i2c_remove),
1046 .id_table = wm8960_i2c_id,
1050 static int __init wm8960_modinit(void)
1053 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1054 ret = i2c_add_driver(&wm8960_i2c_driver);
1056 printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n",
1062 module_init(wm8960_modinit);
1064 static void __exit wm8960_exit(void)
1066 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
1067 i2c_del_driver(&wm8960_i2c_driver);
1070 module_exit(wm8960_exit);
1072 MODULE_DESCRIPTION("ASoC WM8960 driver");
1073 MODULE_AUTHOR("Liam Girdwood");
1074 MODULE_LICENSE("GPL");