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"
32 struct snd_soc_codec_device soc_codec_dev_wm8960;
35 #define WM8960_VMID_MASK 0x180
36 #define WM8960_VREF 0x40
39 #define WM8960_PWR2_LOUT1 0x40
40 #define WM8960_PWR2_ROUT1 0x20
41 #define WM8960_PWR2_OUT3 0x02
43 /* R28 - Anti-pop 1 */
44 #define WM8960_POBCTRL 0x80
45 #define WM8960_BUFDCOPEN 0x10
46 #define WM8960_BUFIOEN 0x08
47 #define WM8960_SOFT_ST 0x04
48 #define WM8960_HPSTBY 0x01
50 /* R29 - Anti-pop 2 */
51 #define WM8960_DISOP 0x40
52 #define WM8960_DRES_MASK 0x30
55 * wm8960 register cache
56 * We can't read the WM8960 register space when we are
57 * using 2 wire for device control, so we cache them instead.
59 static const u16 wm8960_reg[WM8960_CACHEREGNUM] = {
60 0x0097, 0x0097, 0x0000, 0x0000,
61 0x0000, 0x0008, 0x0000, 0x000a,
62 0x01c0, 0x0000, 0x00ff, 0x00ff,
63 0x0000, 0x0000, 0x0000, 0x0000,
64 0x0000, 0x007b, 0x0100, 0x0032,
65 0x0000, 0x00c3, 0x00c3, 0x01c0,
66 0x0000, 0x0000, 0x0000, 0x0000,
67 0x0000, 0x0000, 0x0000, 0x0000,
68 0x0100, 0x0100, 0x0050, 0x0050,
69 0x0050, 0x0050, 0x0000, 0x0000,
70 0x0000, 0x0000, 0x0040, 0x0000,
71 0x0000, 0x0050, 0x0050, 0x0000,
72 0x0002, 0x0037, 0x004d, 0x0080,
73 0x0008, 0x0031, 0x0026, 0x00e9,
77 u16 reg_cache[WM8960_CACHEREGNUM];
78 struct snd_soc_codec codec;
79 struct snd_soc_dapm_widget *lout1;
80 struct snd_soc_dapm_widget *rout1;
81 struct snd_soc_dapm_widget *out3;
86 #define wm8960_reset(c) snd_soc_write(c, WM8960_RESET, 0)
88 /* enumerated controls */
89 static const char *wm8960_polarity[] = {"No Inversion", "Left Inverted",
90 "Right Inverted", "Stereo Inversion"};
91 static const char *wm8960_3d_upper_cutoff[] = {"High", "Low"};
92 static const char *wm8960_3d_lower_cutoff[] = {"Low", "High"};
93 static const char *wm8960_alcfunc[] = {"Off", "Right", "Left", "Stereo"};
94 static const char *wm8960_alcmode[] = {"ALC", "Limiter"};
96 static const struct soc_enum wm8960_enum[] = {
97 SOC_ENUM_SINGLE(WM8960_DACCTL1, 5, 4, wm8960_polarity),
98 SOC_ENUM_SINGLE(WM8960_DACCTL2, 5, 4, wm8960_polarity),
99 SOC_ENUM_SINGLE(WM8960_3D, 6, 2, wm8960_3d_upper_cutoff),
100 SOC_ENUM_SINGLE(WM8960_3D, 5, 2, wm8960_3d_lower_cutoff),
101 SOC_ENUM_SINGLE(WM8960_ALC1, 7, 4, wm8960_alcfunc),
102 SOC_ENUM_SINGLE(WM8960_ALC3, 8, 2, wm8960_alcmode),
105 static const int deemph_settings[] = { 0, 32000, 44100, 48000 };
107 static int wm8960_set_deemph(struct snd_soc_codec *codec)
109 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
112 /* If we're using deemphasis select the nearest available sample
115 if (wm8960->deemph) {
117 for (i = 2; i < ARRAY_SIZE(deemph_settings); i++) {
118 if (abs(deemph_settings[i] - wm8960->playback_fs) <
119 abs(deemph_settings[best] - wm8960->playback_fs))
128 dev_dbg(codec->dev, "Set deemphasis %d\n", val);
130 return snd_soc_update_bits(codec, WM8960_DACCTL1,
134 static int wm8960_get_deemph(struct snd_kcontrol *kcontrol,
135 struct snd_ctl_elem_value *ucontrol)
137 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
138 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
140 ucontrol->value.enumerated.item[0] = wm8960->deemph;
144 static int wm8960_put_deemph(struct snd_kcontrol *kcontrol,
145 struct snd_ctl_elem_value *ucontrol)
147 struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
148 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
149 int deemph = ucontrol->value.enumerated.item[0];
154 wm8960->deemph = deemph;
156 return wm8960_set_deemph(codec);
159 static const DECLARE_TLV_DB_SCALE(adc_tlv, -9700, 50, 0);
160 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 50, 1);
161 static const DECLARE_TLV_DB_SCALE(bypass_tlv, -2100, 300, 0);
162 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
164 static const struct snd_kcontrol_new wm8960_snd_controls[] = {
165 SOC_DOUBLE_R_TLV("Capture Volume", WM8960_LINVOL, WM8960_RINVOL,
167 SOC_DOUBLE_R("Capture Volume ZC Switch", WM8960_LINVOL, WM8960_RINVOL,
169 SOC_DOUBLE_R("Capture Switch", WM8960_LINVOL, WM8960_RINVOL,
172 SOC_DOUBLE_R_TLV("Playback Volume", WM8960_LDAC, WM8960_RDAC,
175 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8960_LOUT1, WM8960_ROUT1,
177 SOC_DOUBLE_R("Headphone Playback ZC Switch", WM8960_LOUT1, WM8960_ROUT1,
180 SOC_DOUBLE_R_TLV("Speaker Playback Volume", WM8960_LOUT2, WM8960_ROUT2,
182 SOC_DOUBLE_R("Speaker Playback ZC Switch", WM8960_LOUT2, WM8960_ROUT2,
184 SOC_SINGLE("Speaker DC Volume", WM8960_CLASSD3, 3, 5, 0),
185 SOC_SINGLE("Speaker AC Volume", WM8960_CLASSD3, 0, 5, 0),
187 SOC_SINGLE("PCM Playback -6dB Switch", WM8960_DACCTL1, 7, 1, 0),
188 SOC_ENUM("ADC Polarity", wm8960_enum[0]),
189 SOC_SINGLE("ADC High Pass Filter Switch", WM8960_DACCTL1, 0, 1, 0),
191 SOC_ENUM("DAC Polarity", wm8960_enum[2]),
192 SOC_SINGLE_BOOL_EXT("DAC Deemphasis Switch", 0,
193 wm8960_get_deemph, wm8960_put_deemph),
195 SOC_ENUM("3D Filter Upper Cut-Off", wm8960_enum[2]),
196 SOC_ENUM("3D Filter Lower Cut-Off", wm8960_enum[3]),
197 SOC_SINGLE("3D Volume", WM8960_3D, 1, 15, 0),
198 SOC_SINGLE("3D Switch", WM8960_3D, 0, 1, 0),
200 SOC_ENUM("ALC Function", wm8960_enum[4]),
201 SOC_SINGLE("ALC Max Gain", WM8960_ALC1, 4, 7, 0),
202 SOC_SINGLE("ALC Target", WM8960_ALC1, 0, 15, 1),
203 SOC_SINGLE("ALC Min Gain", WM8960_ALC2, 4, 7, 0),
204 SOC_SINGLE("ALC Hold Time", WM8960_ALC2, 0, 15, 0),
205 SOC_ENUM("ALC Mode", wm8960_enum[5]),
206 SOC_SINGLE("ALC Decay", WM8960_ALC3, 4, 15, 0),
207 SOC_SINGLE("ALC Attack", WM8960_ALC3, 0, 15, 0),
209 SOC_SINGLE("Noise Gate Threshold", WM8960_NOISEG, 3, 31, 0),
210 SOC_SINGLE("Noise Gate Switch", WM8960_NOISEG, 0, 1, 0),
212 SOC_DOUBLE_R("ADC PCM Capture Volume", WM8960_LINPATH, WM8960_RINPATH,
215 SOC_SINGLE_TLV("Left Output Mixer Boost Bypass Volume",
216 WM8960_BYPASS1, 4, 7, 1, bypass_tlv),
217 SOC_SINGLE_TLV("Left Output Mixer LINPUT3 Volume",
218 WM8960_LOUTMIX, 4, 7, 1, bypass_tlv),
219 SOC_SINGLE_TLV("Right Output Mixer Boost Bypass Volume",
220 WM8960_BYPASS2, 4, 7, 1, bypass_tlv),
221 SOC_SINGLE_TLV("Right Output Mixer RINPUT3 Volume",
222 WM8960_ROUTMIX, 4, 7, 1, bypass_tlv),
225 static const struct snd_kcontrol_new wm8960_lin_boost[] = {
226 SOC_DAPM_SINGLE("LINPUT2 Switch", WM8960_LINPATH, 6, 1, 0),
227 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LINPATH, 7, 1, 0),
228 SOC_DAPM_SINGLE("LINPUT1 Switch", WM8960_LINPATH, 8, 1, 0),
231 static const struct snd_kcontrol_new wm8960_lin[] = {
232 SOC_DAPM_SINGLE("Boost Switch", WM8960_LINPATH, 3, 1, 0),
235 static const struct snd_kcontrol_new wm8960_rin_boost[] = {
236 SOC_DAPM_SINGLE("RINPUT2 Switch", WM8960_RINPATH, 6, 1, 0),
237 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_RINPATH, 7, 1, 0),
238 SOC_DAPM_SINGLE("RINPUT1 Switch", WM8960_RINPATH, 8, 1, 0),
241 static const struct snd_kcontrol_new wm8960_rin[] = {
242 SOC_DAPM_SINGLE("Boost Switch", WM8960_RINPATH, 3, 1, 0),
245 static const struct snd_kcontrol_new wm8960_loutput_mixer[] = {
246 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_LOUTMIX, 8, 1, 0),
247 SOC_DAPM_SINGLE("LINPUT3 Switch", WM8960_LOUTMIX, 7, 1, 0),
248 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS1, 7, 1, 0),
251 static const struct snd_kcontrol_new wm8960_routput_mixer[] = {
252 SOC_DAPM_SINGLE("PCM Playback Switch", WM8960_ROUTMIX, 8, 1, 0),
253 SOC_DAPM_SINGLE("RINPUT3 Switch", WM8960_ROUTMIX, 7, 1, 0),
254 SOC_DAPM_SINGLE("Boost Bypass Switch", WM8960_BYPASS2, 7, 1, 0),
257 static const struct snd_kcontrol_new wm8960_mono_out[] = {
258 SOC_DAPM_SINGLE("Left Switch", WM8960_MONOMIX1, 7, 1, 0),
259 SOC_DAPM_SINGLE("Right Switch", WM8960_MONOMIX2, 7, 1, 0),
262 static const struct snd_soc_dapm_widget wm8960_dapm_widgets[] = {
263 SND_SOC_DAPM_INPUT("LINPUT1"),
264 SND_SOC_DAPM_INPUT("RINPUT1"),
265 SND_SOC_DAPM_INPUT("LINPUT2"),
266 SND_SOC_DAPM_INPUT("RINPUT2"),
267 SND_SOC_DAPM_INPUT("LINPUT3"),
268 SND_SOC_DAPM_INPUT("RINPUT3"),
270 SND_SOC_DAPM_MICBIAS("MICB", WM8960_POWER1, 1, 0),
272 SND_SOC_DAPM_MIXER("Left Boost Mixer", WM8960_POWER1, 5, 0,
273 wm8960_lin_boost, ARRAY_SIZE(wm8960_lin_boost)),
274 SND_SOC_DAPM_MIXER("Right Boost Mixer", WM8960_POWER1, 4, 0,
275 wm8960_rin_boost, ARRAY_SIZE(wm8960_rin_boost)),
277 SND_SOC_DAPM_MIXER("Left Input Mixer", WM8960_POWER3, 5, 0,
278 wm8960_lin, ARRAY_SIZE(wm8960_lin)),
279 SND_SOC_DAPM_MIXER("Right Input Mixer", WM8960_POWER3, 4, 0,
280 wm8960_rin, ARRAY_SIZE(wm8960_rin)),
282 SND_SOC_DAPM_ADC("Left ADC", "Capture", WM8960_POWER2, 3, 0),
283 SND_SOC_DAPM_ADC("Right ADC", "Capture", WM8960_POWER2, 2, 0),
285 SND_SOC_DAPM_DAC("Left DAC", "Playback", WM8960_POWER2, 8, 0),
286 SND_SOC_DAPM_DAC("Right DAC", "Playback", WM8960_POWER2, 7, 0),
288 SND_SOC_DAPM_MIXER("Left Output Mixer", WM8960_POWER3, 3, 0,
289 &wm8960_loutput_mixer[0],
290 ARRAY_SIZE(wm8960_loutput_mixer)),
291 SND_SOC_DAPM_MIXER("Right Output Mixer", WM8960_POWER3, 2, 0,
292 &wm8960_routput_mixer[0],
293 ARRAY_SIZE(wm8960_routput_mixer)),
295 SND_SOC_DAPM_PGA("LOUT1 PGA", WM8960_POWER2, 6, 0, NULL, 0),
296 SND_SOC_DAPM_PGA("ROUT1 PGA", WM8960_POWER2, 5, 0, NULL, 0),
298 SND_SOC_DAPM_PGA("Left Speaker PGA", WM8960_POWER2, 4, 0, NULL, 0),
299 SND_SOC_DAPM_PGA("Right Speaker PGA", WM8960_POWER2, 3, 0, NULL, 0),
301 SND_SOC_DAPM_PGA("Right Speaker Output", WM8960_CLASSD1, 7, 0, NULL, 0),
302 SND_SOC_DAPM_PGA("Left Speaker Output", WM8960_CLASSD1, 6, 0, NULL, 0),
304 SND_SOC_DAPM_OUTPUT("SPK_LP"),
305 SND_SOC_DAPM_OUTPUT("SPK_LN"),
306 SND_SOC_DAPM_OUTPUT("HP_L"),
307 SND_SOC_DAPM_OUTPUT("HP_R"),
308 SND_SOC_DAPM_OUTPUT("SPK_RP"),
309 SND_SOC_DAPM_OUTPUT("SPK_RN"),
310 SND_SOC_DAPM_OUTPUT("OUT3"),
313 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_out3[] = {
314 SND_SOC_DAPM_MIXER("Mono Output Mixer", WM8960_POWER2, 1, 0,
316 ARRAY_SIZE(wm8960_mono_out)),
319 /* Represent OUT3 as a PGA so that it gets turned on with LOUT1/ROUT1 */
320 static const struct snd_soc_dapm_widget wm8960_dapm_widgets_capless[] = {
321 SND_SOC_DAPM_PGA("OUT3 VMID", WM8960_POWER2, 1, 0, NULL, 0),
324 static const struct snd_soc_dapm_route audio_paths[] = {
325 { "Left Boost Mixer", "LINPUT1 Switch", "LINPUT1" },
326 { "Left Boost Mixer", "LINPUT2 Switch", "LINPUT2" },
327 { "Left Boost Mixer", "LINPUT3 Switch", "LINPUT3" },
329 { "Left Input Mixer", "Boost Switch", "Left Boost Mixer", },
330 { "Left Input Mixer", NULL, "LINPUT1", }, /* Really Boost Switch */
331 { "Left Input Mixer", NULL, "LINPUT2" },
332 { "Left Input Mixer", NULL, "LINPUT3" },
334 { "Right Boost Mixer", "RINPUT1 Switch", "RINPUT1" },
335 { "Right Boost Mixer", "RINPUT2 Switch", "RINPUT2" },
336 { "Right Boost Mixer", "RINPUT3 Switch", "RINPUT3" },
338 { "Right Input Mixer", "Boost Switch", "Right Boost Mixer", },
339 { "Right Input Mixer", NULL, "RINPUT1", }, /* Really Boost Switch */
340 { "Right Input Mixer", NULL, "RINPUT2" },
341 { "Right Input Mixer", NULL, "LINPUT3" },
343 { "Left ADC", NULL, "Left Input Mixer" },
344 { "Right ADC", NULL, "Right Input Mixer" },
346 { "Left Output Mixer", "LINPUT3 Switch", "LINPUT3" },
347 { "Left Output Mixer", "Boost Bypass Switch", "Left Boost Mixer"} ,
348 { "Left Output Mixer", "PCM Playback Switch", "Left DAC" },
350 { "Right Output Mixer", "RINPUT3 Switch", "RINPUT3" },
351 { "Right Output Mixer", "Boost Bypass Switch", "Right Boost Mixer" } ,
352 { "Right Output Mixer", "PCM Playback Switch", "Right DAC" },
354 { "LOUT1 PGA", NULL, "Left Output Mixer" },
355 { "ROUT1 PGA", NULL, "Right Output Mixer" },
357 { "HP_L", NULL, "LOUT1 PGA" },
358 { "HP_R", NULL, "ROUT1 PGA" },
360 { "Left Speaker PGA", NULL, "Left Output Mixer" },
361 { "Right Speaker PGA", NULL, "Right Output Mixer" },
363 { "Left Speaker Output", NULL, "Left Speaker PGA" },
364 { "Right Speaker Output", NULL, "Right Speaker PGA" },
366 { "SPK_LN", NULL, "Left Speaker Output" },
367 { "SPK_LP", NULL, "Left Speaker Output" },
368 { "SPK_RN", NULL, "Right Speaker Output" },
369 { "SPK_RP", NULL, "Right Speaker Output" },
372 static const struct snd_soc_dapm_route audio_paths_out3[] = {
373 { "Mono Output Mixer", "Left Switch", "Left Output Mixer" },
374 { "Mono Output Mixer", "Right Switch", "Right Output Mixer" },
376 { "OUT3", NULL, "Mono Output Mixer", }
379 static const struct snd_soc_dapm_route audio_paths_capless[] = {
380 { "HP_L", NULL, "OUT3 VMID" },
381 { "HP_R", NULL, "OUT3 VMID" },
383 { "OUT3 VMID", NULL, "Left Output Mixer" },
384 { "OUT3 VMID", NULL, "Right Output Mixer" },
387 static int wm8960_add_widgets(struct snd_soc_codec *codec)
389 struct wm8960_data *pdata = codec->dev->platform_data;
390 struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec);
391 struct snd_soc_dapm_widget *w;
393 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets,
394 ARRAY_SIZE(wm8960_dapm_widgets));
396 snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths));
398 /* In capless mode OUT3 is used to provide VMID for the
399 * headphone outputs, otherwise it is used as a mono mixer.
401 if (pdata && pdata->capless) {
402 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets_capless,
403 ARRAY_SIZE(wm8960_dapm_widgets_capless));
405 snd_soc_dapm_add_routes(codec, audio_paths_capless,
406 ARRAY_SIZE(audio_paths_capless));
408 snd_soc_dapm_new_controls(codec, wm8960_dapm_widgets_out3,
409 ARRAY_SIZE(wm8960_dapm_widgets_out3));
411 snd_soc_dapm_add_routes(codec, audio_paths_out3,
412 ARRAY_SIZE(audio_paths_out3));
415 /* We need to power up the headphone output stage out of
416 * sequence for capless mode. To save scanning the widget
417 * list each time to find the desired power state do so now
418 * and save the result.
420 list_for_each_entry(w, &codec->dapm_widgets, list) {
421 if (strcmp(w->name, "LOUT1 PGA") == 0)
423 if (strcmp(w->name, "ROUT1 PGA") == 0)
425 if (strcmp(w->name, "OUT3 VMID") == 0)
432 static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai,
435 struct snd_soc_codec *codec = codec_dai->codec;
438 /* set master/slave audio interface */
439 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
440 case SND_SOC_DAIFMT_CBM_CFM:
443 case SND_SOC_DAIFMT_CBS_CFS:
449 /* interface format */
450 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
451 case SND_SOC_DAIFMT_I2S:
454 case SND_SOC_DAIFMT_RIGHT_J:
456 case SND_SOC_DAIFMT_LEFT_J:
459 case SND_SOC_DAIFMT_DSP_A:
462 case SND_SOC_DAIFMT_DSP_B:
469 /* clock inversion */
470 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
471 case SND_SOC_DAIFMT_NB_NF:
473 case SND_SOC_DAIFMT_IB_IF:
476 case SND_SOC_DAIFMT_IB_NF:
479 case SND_SOC_DAIFMT_NB_IF:
487 snd_soc_write(codec, WM8960_IFACE1, iface);
506 static int wm8960_hw_params(struct snd_pcm_substream *substream,
507 struct snd_pcm_hw_params *params,
508 struct snd_soc_dai *dai)
510 struct snd_soc_pcm_runtime *rtd = substream->private_data;
511 struct snd_soc_device *socdev = rtd->socdev;
512 struct snd_soc_codec *codec = socdev->card->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 #define WM8960_RATES SNDRV_PCM_RATE_8000_48000
855 #define WM8960_FORMATS \
856 (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
857 SNDRV_PCM_FMTBIT_S24_LE)
859 static struct snd_soc_dai_ops wm8960_dai_ops = {
860 .hw_params = wm8960_hw_params,
861 .digital_mute = wm8960_mute,
862 .set_fmt = wm8960_set_dai_fmt,
863 .set_clkdiv = wm8960_set_dai_clkdiv,
864 .set_pll = wm8960_set_dai_pll,
867 struct snd_soc_dai wm8960_dai = {
870 .stream_name = "Playback",
873 .rates = WM8960_RATES,
874 .formats = WM8960_FORMATS,},
876 .stream_name = "Capture",
879 .rates = WM8960_RATES,
880 .formats = WM8960_FORMATS,},
881 .ops = &wm8960_dai_ops,
882 .symmetric_rates = 1,
884 EXPORT_SYMBOL_GPL(wm8960_dai);
886 static int wm8960_suspend(struct platform_device *pdev, pm_message_t state)
888 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
889 struct snd_soc_codec *codec = socdev->card->codec;
891 codec->set_bias_level(codec, SND_SOC_BIAS_OFF);
895 static int wm8960_resume(struct platform_device *pdev)
897 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
898 struct snd_soc_codec *codec = socdev->card->codec;
901 u16 *cache = codec->reg_cache;
903 /* Sync reg_cache with the hardware */
904 for (i = 0; i < ARRAY_SIZE(wm8960_reg); i++) {
905 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
906 data[1] = cache[i] & 0x00ff;
907 codec->hw_write(codec->control_data, data, 2);
910 codec->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
915 static struct snd_soc_codec *wm8960_codec;
917 static int wm8960_probe(struct platform_device *pdev)
919 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
920 struct snd_soc_codec *codec;
923 if (wm8960_codec == NULL) {
924 dev_err(&pdev->dev, "Codec device not registered\n");
928 socdev->card->codec = wm8960_codec;
929 codec = wm8960_codec;
932 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
934 dev_err(codec->dev, "failed to create pcms: %d\n", ret);
938 snd_soc_add_controls(codec, wm8960_snd_controls,
939 ARRAY_SIZE(wm8960_snd_controls));
940 wm8960_add_widgets(codec);
948 /* power down chip */
949 static int wm8960_remove(struct platform_device *pdev)
951 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
953 snd_soc_free_pcms(socdev);
954 snd_soc_dapm_free(socdev);
959 struct snd_soc_codec_device soc_codec_dev_wm8960 = {
960 .probe = wm8960_probe,
961 .remove = wm8960_remove,
962 .suspend = wm8960_suspend,
963 .resume = wm8960_resume,
965 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8960);
967 static int wm8960_register(struct wm8960_priv *wm8960,
968 enum snd_soc_control_type control)
970 struct wm8960_data *pdata = wm8960->codec.dev->platform_data;
971 struct snd_soc_codec *codec = &wm8960->codec;
976 dev_err(codec->dev, "Another WM8960 is registered\n");
981 codec->set_bias_level = wm8960_set_bias_level_out3;
984 dev_warn(codec->dev, "No platform data supplied\n");
986 if (pdata->dres > WM8960_DRES_MAX) {
987 dev_err(codec->dev, "Invalid DRES: %d\n", pdata->dres);
992 codec->set_bias_level = wm8960_set_bias_level_capless;
995 mutex_init(&codec->mutex);
996 INIT_LIST_HEAD(&codec->dapm_widgets);
997 INIT_LIST_HEAD(&codec->dapm_paths);
999 snd_soc_codec_set_drvdata(codec, wm8960);
1000 codec->name = "WM8960";
1001 codec->owner = THIS_MODULE;
1002 codec->bias_level = SND_SOC_BIAS_OFF;
1003 codec->dai = &wm8960_dai;
1005 codec->reg_cache_size = WM8960_CACHEREGNUM;
1006 codec->reg_cache = &wm8960->reg_cache;
1008 memcpy(codec->reg_cache, wm8960_reg, sizeof(wm8960_reg));
1010 ret = snd_soc_codec_set_cache_io(codec, 7, 9, control);
1012 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
1016 ret = wm8960_reset(codec);
1018 dev_err(codec->dev, "Failed to issue reset\n");
1022 wm8960_dai.dev = codec->dev;
1024 codec->set_bias_level(codec, SND_SOC_BIAS_STANDBY);
1026 /* Latch the update bits */
1027 reg = snd_soc_read(codec, WM8960_LINVOL);
1028 snd_soc_write(codec, WM8960_LINVOL, reg | 0x100);
1029 reg = snd_soc_read(codec, WM8960_RINVOL);
1030 snd_soc_write(codec, WM8960_RINVOL, reg | 0x100);
1031 reg = snd_soc_read(codec, WM8960_LADC);
1032 snd_soc_write(codec, WM8960_LADC, reg | 0x100);
1033 reg = snd_soc_read(codec, WM8960_RADC);
1034 snd_soc_write(codec, WM8960_RADC, reg | 0x100);
1035 reg = snd_soc_read(codec, WM8960_LDAC);
1036 snd_soc_write(codec, WM8960_LDAC, reg | 0x100);
1037 reg = snd_soc_read(codec, WM8960_RDAC);
1038 snd_soc_write(codec, WM8960_RDAC, reg | 0x100);
1039 reg = snd_soc_read(codec, WM8960_LOUT1);
1040 snd_soc_write(codec, WM8960_LOUT1, reg | 0x100);
1041 reg = snd_soc_read(codec, WM8960_ROUT1);
1042 snd_soc_write(codec, WM8960_ROUT1, reg | 0x100);
1043 reg = snd_soc_read(codec, WM8960_LOUT2);
1044 snd_soc_write(codec, WM8960_LOUT2, reg | 0x100);
1045 reg = snd_soc_read(codec, WM8960_ROUT2);
1046 snd_soc_write(codec, WM8960_ROUT2, reg | 0x100);
1048 wm8960_codec = codec;
1050 ret = snd_soc_register_codec(codec);
1052 dev_err(codec->dev, "Failed to register codec: %d\n", ret);
1056 ret = snd_soc_register_dai(&wm8960_dai);
1058 dev_err(codec->dev, "Failed to register DAI: %d\n", ret);
1065 snd_soc_unregister_codec(codec);
1071 static void wm8960_unregister(struct wm8960_priv *wm8960)
1073 wm8960->codec.set_bias_level(&wm8960->codec, SND_SOC_BIAS_OFF);
1074 snd_soc_unregister_dai(&wm8960_dai);
1075 snd_soc_unregister_codec(&wm8960->codec);
1077 wm8960_codec = NULL;
1080 static __devinit int wm8960_i2c_probe(struct i2c_client *i2c,
1081 const struct i2c_device_id *id)
1083 struct wm8960_priv *wm8960;
1084 struct snd_soc_codec *codec;
1086 wm8960 = kzalloc(sizeof(struct wm8960_priv), GFP_KERNEL);
1090 codec = &wm8960->codec;
1092 i2c_set_clientdata(i2c, wm8960);
1093 codec->control_data = i2c;
1095 codec->dev = &i2c->dev;
1097 return wm8960_register(wm8960, SND_SOC_I2C);
1100 static __devexit int wm8960_i2c_remove(struct i2c_client *client)
1102 struct wm8960_priv *wm8960 = i2c_get_clientdata(client);
1103 wm8960_unregister(wm8960);
1107 static const struct i2c_device_id wm8960_i2c_id[] = {
1111 MODULE_DEVICE_TABLE(i2c, wm8960_i2c_id);
1113 static struct i2c_driver wm8960_i2c_driver = {
1116 .owner = THIS_MODULE,
1118 .probe = wm8960_i2c_probe,
1119 .remove = __devexit_p(wm8960_i2c_remove),
1120 .id_table = wm8960_i2c_id,
1123 static int __init wm8960_modinit(void)
1127 ret = i2c_add_driver(&wm8960_i2c_driver);
1129 printk(KERN_ERR "Failed to register WM8960 I2C driver: %d\n",
1135 module_init(wm8960_modinit);
1137 static void __exit wm8960_exit(void)
1139 i2c_del_driver(&wm8960_i2c_driver);
1141 module_exit(wm8960_exit);
1144 MODULE_DESCRIPTION("ASoC WM8960 driver");
1145 MODULE_AUTHOR("Liam Girdwood");
1146 MODULE_LICENSE("GPL");