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13#include <linux/module.h>
14#include <linux/moduleparam.h>
15#include <linux/init.h>
16#include <linux/delay.h>
17#include <linux/of_device.h>
18#include <linux/pm.h>
19#include <linux/spi/spi.h>
20#include <linux/regmap.h>
21#include <linux/regulator/consumer.h>
22#include <linux/slab.h>
23#include <sound/core.h>
24#include <sound/pcm.h>
25#include <sound/pcm_params.h>
26#include <sound/soc.h>
27#include <sound/initval.h>
28#include <sound/tlv.h>
29
30#include "wm8770.h"
31
32#define WM8770_NUM_SUPPLIES 3
33static const char *wm8770_supply_names[WM8770_NUM_SUPPLIES] = {
34 "AVDD1",
35 "AVDD2",
36 "DVDD"
37};
38
39static const struct reg_default wm8770_reg_defaults[] = {
40 { 0, 0x7f },
41 { 1, 0x7f },
42 { 2, 0x7f },
43 { 3, 0x7f },
44 { 4, 0x7f },
45 { 5, 0x7f },
46 { 6, 0x7f },
47 { 7, 0x7f },
48 { 8, 0x7f },
49 { 9, 0xff },
50 { 10, 0xff },
51 { 11, 0xff },
52 { 12, 0xff },
53 { 13, 0xff },
54 { 14, 0xff },
55 { 15, 0xff },
56 { 16, 0xff },
57 { 17, 0xff },
58 { 18, 0 },
59 { 19, 0x90 },
60 { 20, 0 },
61 { 21, 0 },
62 { 22, 0x22 },
63 { 23, 0x22 },
64 { 24, 0x3e },
65 { 25, 0xc },
66 { 26, 0xc },
67 { 27, 0x100 },
68 { 28, 0x189 },
69 { 29, 0x189 },
70 { 30, 0x8770 },
71};
72
73static bool wm8770_volatile_reg(struct device *dev, unsigned int reg)
74{
75 switch (reg) {
76 case WM8770_RESET:
77 return true;
78 default:
79 return false;
80 }
81}
82
83struct wm8770_priv {
84 struct regmap *regmap;
85 struct regulator_bulk_data supplies[WM8770_NUM_SUPPLIES];
86 struct notifier_block disable_nb[WM8770_NUM_SUPPLIES];
87 struct snd_soc_codec *codec;
88 int sysclk;
89};
90
91static int vout12supply_event(struct snd_soc_dapm_widget *w,
92 struct snd_kcontrol *kcontrol, int event);
93static int vout34supply_event(struct snd_soc_dapm_widget *w,
94 struct snd_kcontrol *kcontrol, int event);
95
96
97
98
99
100
101#define WM8770_REGULATOR_EVENT(n) \
102static int wm8770_regulator_event_##n(struct notifier_block *nb, \
103 unsigned long event, void *data) \
104{ \
105 struct wm8770_priv *wm8770 = container_of(nb, struct wm8770_priv, \
106 disable_nb[n]); \
107 if (event & REGULATOR_EVENT_DISABLE) { \
108 regcache_mark_dirty(wm8770->regmap); \
109 } \
110 return 0; \
111}
112
113WM8770_REGULATOR_EVENT(0)
114WM8770_REGULATOR_EVENT(1)
115WM8770_REGULATOR_EVENT(2)
116
117static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0);
118static const DECLARE_TLV_DB_SCALE(dac_dig_tlv, -12750, 50, 1);
119static const DECLARE_TLV_DB_SCALE(dac_alg_tlv, -12700, 100, 1);
120
121static const char *dac_phase_text[][2] = {
122 { "DAC1 Normal", "DAC1 Inverted" },
123 { "DAC2 Normal", "DAC2 Inverted" },
124 { "DAC3 Normal", "DAC3 Inverted" },
125 { "DAC4 Normal", "DAC4 Inverted" },
126};
127
128static const struct soc_enum dac_phase[] = {
129 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 0, 1, 2, dac_phase_text[0]),
130 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 2, 3, 2, dac_phase_text[1]),
131 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 4, 5, 2, dac_phase_text[2]),
132 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 6, 7, 2, dac_phase_text[3]),
133};
134
135static const struct snd_kcontrol_new wm8770_snd_controls[] = {
136
137 SOC_SINGLE_TLV("DAC Playback Volume", WM8770_MSDIGVOL, 0, 255, 0,
138 dac_dig_tlv),
139 SOC_SINGLE("DAC Playback Switch", WM8770_DACMUTE, 4, 1, 1),
140 SOC_SINGLE("DAC Playback ZC Switch", WM8770_DACCTRL1, 0, 1, 0),
141
142
143 SOC_SINGLE_TLV("VOUT Playback Volume", WM8770_MSALGVOL, 0, 127, 0,
144 dac_alg_tlv),
145 SOC_SINGLE("VOUT Playback ZC Switch", WM8770_MSALGVOL, 7, 1, 0),
146
147
148 SOC_DOUBLE_R_TLV("VOUT1 Playback Volume", WM8770_VOUT1LVOL,
149 WM8770_VOUT1RVOL, 0, 127, 0, dac_alg_tlv),
150 SOC_DOUBLE_R("VOUT1 Playback ZC Switch", WM8770_VOUT1LVOL,
151 WM8770_VOUT1RVOL, 7, 1, 0),
152 SOC_DOUBLE_R_TLV("VOUT2 Playback Volume", WM8770_VOUT2LVOL,
153 WM8770_VOUT2RVOL, 0, 127, 0, dac_alg_tlv),
154 SOC_DOUBLE_R("VOUT2 Playback ZC Switch", WM8770_VOUT2LVOL,
155 WM8770_VOUT2RVOL, 7, 1, 0),
156 SOC_DOUBLE_R_TLV("VOUT3 Playback Volume", WM8770_VOUT3LVOL,
157 WM8770_VOUT3RVOL, 0, 127, 0, dac_alg_tlv),
158 SOC_DOUBLE_R("VOUT3 Playback ZC Switch", WM8770_VOUT3LVOL,
159 WM8770_VOUT3RVOL, 7, 1, 0),
160 SOC_DOUBLE_R_TLV("VOUT4 Playback Volume", WM8770_VOUT4LVOL,
161 WM8770_VOUT4RVOL, 0, 127, 0, dac_alg_tlv),
162 SOC_DOUBLE_R("VOUT4 Playback ZC Switch", WM8770_VOUT4LVOL,
163 WM8770_VOUT4RVOL, 7, 1, 0),
164
165
166 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", WM8770_DAC1LVOL,
167 WM8770_DAC1RVOL, 0, 255, 0, dac_dig_tlv),
168 SOC_SINGLE("DAC1 Deemphasis Switch", WM8770_DACCTRL2, 0, 1, 0),
169 SOC_ENUM("DAC1 Phase", dac_phase[0]),
170 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", WM8770_DAC2LVOL,
171 WM8770_DAC2RVOL, 0, 255, 0, dac_dig_tlv),
172 SOC_SINGLE("DAC2 Deemphasis Switch", WM8770_DACCTRL2, 1, 1, 0),
173 SOC_ENUM("DAC2 Phase", dac_phase[1]),
174 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", WM8770_DAC3LVOL,
175 WM8770_DAC3RVOL, 0, 255, 0, dac_dig_tlv),
176 SOC_SINGLE("DAC3 Deemphasis Switch", WM8770_DACCTRL2, 2, 1, 0),
177 SOC_ENUM("DAC3 Phase", dac_phase[2]),
178 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", WM8770_DAC4LVOL,
179 WM8770_DAC4RVOL, 0, 255, 0, dac_dig_tlv),
180 SOC_SINGLE("DAC4 Deemphasis Switch", WM8770_DACCTRL2, 3, 1, 0),
181 SOC_ENUM("DAC4 Phase", dac_phase[3]),
182
183
184 SOC_DOUBLE_R_TLV("Capture Volume", WM8770_ADCLCTRL, WM8770_ADCRCTRL,
185 0, 31, 0, adc_tlv),
186 SOC_DOUBLE_R("Capture Switch", WM8770_ADCLCTRL, WM8770_ADCRCTRL,
187 5, 1, 1),
188
189
190 SOC_SINGLE("ADC 128x Oversampling Switch", WM8770_MSTRCTRL, 3, 1, 0),
191 SOC_SINGLE("ADC Highpass Filter Switch", WM8770_IFACECTRL, 8, 1, 1)
192};
193
194static const char *ain_text[] = {
195 "AIN1", "AIN2", "AIN3", "AIN4",
196 "AIN5", "AIN6", "AIN7", "AIN8"
197};
198
199static SOC_ENUM_DOUBLE_DECL(ain_enum,
200 WM8770_ADCMUX, 0, 4, ain_text);
201
202static const struct snd_kcontrol_new ain_mux =
203 SOC_DAPM_ENUM("Capture Mux", ain_enum);
204
205static const struct snd_kcontrol_new vout1_mix_controls[] = {
206 SOC_DAPM_SINGLE("DAC1 Switch", WM8770_OUTMUX1, 0, 1, 0),
207 SOC_DAPM_SINGLE("AUX1 Switch", WM8770_OUTMUX1, 1, 1, 0),
208 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 2, 1, 0)
209};
210
211static const struct snd_kcontrol_new vout2_mix_controls[] = {
212 SOC_DAPM_SINGLE("DAC2 Switch", WM8770_OUTMUX1, 3, 1, 0),
213 SOC_DAPM_SINGLE("AUX2 Switch", WM8770_OUTMUX1, 4, 1, 0),
214 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 5, 1, 0)
215};
216
217static const struct snd_kcontrol_new vout3_mix_controls[] = {
218 SOC_DAPM_SINGLE("DAC3 Switch", WM8770_OUTMUX2, 0, 1, 0),
219 SOC_DAPM_SINGLE("AUX3 Switch", WM8770_OUTMUX2, 1, 1, 0),
220 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 2, 1, 0)
221};
222
223static const struct snd_kcontrol_new vout4_mix_controls[] = {
224 SOC_DAPM_SINGLE("DAC4 Switch", WM8770_OUTMUX2, 3, 1, 0),
225 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 4, 1, 0)
226};
227
228static const struct snd_soc_dapm_widget wm8770_dapm_widgets[] = {
229 SND_SOC_DAPM_INPUT("AUX1"),
230 SND_SOC_DAPM_INPUT("AUX2"),
231 SND_SOC_DAPM_INPUT("AUX3"),
232
233 SND_SOC_DAPM_INPUT("AIN1"),
234 SND_SOC_DAPM_INPUT("AIN2"),
235 SND_SOC_DAPM_INPUT("AIN3"),
236 SND_SOC_DAPM_INPUT("AIN4"),
237 SND_SOC_DAPM_INPUT("AIN5"),
238 SND_SOC_DAPM_INPUT("AIN6"),
239 SND_SOC_DAPM_INPUT("AIN7"),
240 SND_SOC_DAPM_INPUT("AIN8"),
241
242 SND_SOC_DAPM_MUX("Capture Mux", WM8770_ADCMUX, 8, 1, &ain_mux),
243
244 SND_SOC_DAPM_ADC("ADC", "Capture", WM8770_PWDNCTRL, 1, 1),
245
246 SND_SOC_DAPM_DAC("DAC1", "Playback", WM8770_PWDNCTRL, 2, 1),
247 SND_SOC_DAPM_DAC("DAC2", "Playback", WM8770_PWDNCTRL, 3, 1),
248 SND_SOC_DAPM_DAC("DAC3", "Playback", WM8770_PWDNCTRL, 4, 1),
249 SND_SOC_DAPM_DAC("DAC4", "Playback", WM8770_PWDNCTRL, 5, 1),
250
251 SND_SOC_DAPM_SUPPLY("VOUT12 Supply", SND_SOC_NOPM, 0, 0,
252 vout12supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
253 SND_SOC_DAPM_SUPPLY("VOUT34 Supply", SND_SOC_NOPM, 0, 0,
254 vout34supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
255
256 SND_SOC_DAPM_MIXER("VOUT1 Mixer", SND_SOC_NOPM, 0, 0,
257 vout1_mix_controls, ARRAY_SIZE(vout1_mix_controls)),
258 SND_SOC_DAPM_MIXER("VOUT2 Mixer", SND_SOC_NOPM, 0, 0,
259 vout2_mix_controls, ARRAY_SIZE(vout2_mix_controls)),
260 SND_SOC_DAPM_MIXER("VOUT3 Mixer", SND_SOC_NOPM, 0, 0,
261 vout3_mix_controls, ARRAY_SIZE(vout3_mix_controls)),
262 SND_SOC_DAPM_MIXER("VOUT4 Mixer", SND_SOC_NOPM, 0, 0,
263 vout4_mix_controls, ARRAY_SIZE(vout4_mix_controls)),
264
265 SND_SOC_DAPM_OUTPUT("VOUT1"),
266 SND_SOC_DAPM_OUTPUT("VOUT2"),
267 SND_SOC_DAPM_OUTPUT("VOUT3"),
268 SND_SOC_DAPM_OUTPUT("VOUT4")
269};
270
271static const struct snd_soc_dapm_route wm8770_intercon[] = {
272 { "Capture Mux", "AIN1", "AIN1" },
273 { "Capture Mux", "AIN2", "AIN2" },
274 { "Capture Mux", "AIN3", "AIN3" },
275 { "Capture Mux", "AIN4", "AIN4" },
276 { "Capture Mux", "AIN5", "AIN5" },
277 { "Capture Mux", "AIN6", "AIN6" },
278 { "Capture Mux", "AIN7", "AIN7" },
279 { "Capture Mux", "AIN8", "AIN8" },
280
281 { "ADC", NULL, "Capture Mux" },
282
283 { "VOUT1 Mixer", NULL, "VOUT12 Supply" },
284 { "VOUT1 Mixer", "DAC1 Switch", "DAC1" },
285 { "VOUT1 Mixer", "AUX1 Switch", "AUX1" },
286 { "VOUT1 Mixer", "Bypass Switch", "Capture Mux" },
287
288 { "VOUT2 Mixer", NULL, "VOUT12 Supply" },
289 { "VOUT2 Mixer", "DAC2 Switch", "DAC2" },
290 { "VOUT2 Mixer", "AUX2 Switch", "AUX2" },
291 { "VOUT2 Mixer", "Bypass Switch", "Capture Mux" },
292
293 { "VOUT3 Mixer", NULL, "VOUT34 Supply" },
294 { "VOUT3 Mixer", "DAC3 Switch", "DAC3" },
295 { "VOUT3 Mixer", "AUX3 Switch", "AUX3" },
296 { "VOUT3 Mixer", "Bypass Switch", "Capture Mux" },
297
298 { "VOUT4 Mixer", NULL, "VOUT34 Supply" },
299 { "VOUT4 Mixer", "DAC4 Switch", "DAC4" },
300 { "VOUT4 Mixer", "Bypass Switch", "Capture Mux" },
301
302 { "VOUT1", NULL, "VOUT1 Mixer" },
303 { "VOUT2", NULL, "VOUT2 Mixer" },
304 { "VOUT3", NULL, "VOUT3 Mixer" },
305 { "VOUT4", NULL, "VOUT4 Mixer" }
306};
307
308static int vout12supply_event(struct snd_soc_dapm_widget *w,
309 struct snd_kcontrol *kcontrol, int event)
310{
311 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
312
313 switch (event) {
314 case SND_SOC_DAPM_PRE_PMU:
315 snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0);
316 break;
317 case SND_SOC_DAPM_POST_PMD:
318 snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0x180);
319 break;
320 }
321
322 return 0;
323}
324
325static int vout34supply_event(struct snd_soc_dapm_widget *w,
326 struct snd_kcontrol *kcontrol, int event)
327{
328 struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm);
329
330 switch (event) {
331 case SND_SOC_DAPM_PRE_PMU:
332 snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0);
333 break;
334 case SND_SOC_DAPM_POST_PMD:
335 snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0x180);
336 break;
337 }
338
339 return 0;
340}
341
342static int wm8770_reset(struct snd_soc_codec *codec)
343{
344 return snd_soc_write(codec, WM8770_RESET, 0);
345}
346
347static int wm8770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
348{
349 struct snd_soc_codec *codec;
350 int iface, master;
351
352 codec = dai->codec;
353
354 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
355 case SND_SOC_DAIFMT_CBM_CFM:
356 master = 0x100;
357 break;
358 case SND_SOC_DAIFMT_CBS_CFS:
359 master = 0;
360 break;
361 default:
362 return -EINVAL;
363 }
364
365 iface = 0;
366 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
367 case SND_SOC_DAIFMT_I2S:
368 iface |= 0x2;
369 break;
370 case SND_SOC_DAIFMT_RIGHT_J:
371 break;
372 case SND_SOC_DAIFMT_LEFT_J:
373 iface |= 0x1;
374 break;
375 default:
376 return -EINVAL;
377 }
378
379 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
380 case SND_SOC_DAIFMT_NB_NF:
381 break;
382 case SND_SOC_DAIFMT_IB_IF:
383 iface |= 0xc;
384 break;
385 case SND_SOC_DAIFMT_IB_NF:
386 iface |= 0x8;
387 break;
388 case SND_SOC_DAIFMT_NB_IF:
389 iface |= 0x4;
390 break;
391 default:
392 return -EINVAL;
393 }
394
395 snd_soc_update_bits(codec, WM8770_IFACECTRL, 0xf, iface);
396 snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x100, master);
397
398 return 0;
399}
400
401static const int mclk_ratios[] = {
402 128,
403 192,
404 256,
405 384,
406 512,
407 768
408};
409
410static int wm8770_hw_params(struct snd_pcm_substream *substream,
411 struct snd_pcm_hw_params *params,
412 struct snd_soc_dai *dai)
413{
414 struct snd_soc_codec *codec;
415 struct wm8770_priv *wm8770;
416 int i;
417 int iface;
418 int shift;
419 int ratio;
420
421 codec = dai->codec;
422 wm8770 = snd_soc_codec_get_drvdata(codec);
423
424 iface = 0;
425 switch (params_width(params)) {
426 case 16:
427 break;
428 case 20:
429 iface |= 0x10;
430 break;
431 case 24:
432 iface |= 0x20;
433 break;
434 case 32:
435 iface |= 0x30;
436 break;
437 }
438
439 switch (substream->stream) {
440 case SNDRV_PCM_STREAM_PLAYBACK:
441 i = 0;
442 shift = 4;
443 break;
444 case SNDRV_PCM_STREAM_CAPTURE:
445 i = 2;
446 shift = 0;
447 break;
448 default:
449 return -EINVAL;
450 }
451
452
453 if (snd_soc_read(codec, WM8770_MSTRCTRL) & 0x100) {
454 for (; i < ARRAY_SIZE(mclk_ratios); ++i) {
455 ratio = wm8770->sysclk / params_rate(params);
456 if (ratio == mclk_ratios[i])
457 break;
458 }
459
460 if (i == ARRAY_SIZE(mclk_ratios)) {
461 dev_err(codec->dev,
462 "Unable to configure MCLK ratio %d/%d\n",
463 wm8770->sysclk, params_rate(params));
464 return -EINVAL;
465 }
466
467 dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]);
468
469 snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x7 << shift,
470 i << shift);
471 }
472
473 snd_soc_update_bits(codec, WM8770_IFACECTRL, 0x30, iface);
474
475 return 0;
476}
477
478static int wm8770_mute(struct snd_soc_dai *dai, int mute)
479{
480 struct snd_soc_codec *codec;
481
482 codec = dai->codec;
483 return snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10,
484 !!mute << 4);
485}
486
487static int wm8770_set_sysclk(struct snd_soc_dai *dai,
488 int clk_id, unsigned int freq, int dir)
489{
490 struct snd_soc_codec *codec;
491 struct wm8770_priv *wm8770;
492
493 codec = dai->codec;
494 wm8770 = snd_soc_codec_get_drvdata(codec);
495 wm8770->sysclk = freq;
496 return 0;
497}
498
499static int wm8770_set_bias_level(struct snd_soc_codec *codec,
500 enum snd_soc_bias_level level)
501{
502 int ret;
503 struct wm8770_priv *wm8770;
504
505 wm8770 = snd_soc_codec_get_drvdata(codec);
506
507 switch (level) {
508 case SND_SOC_BIAS_ON:
509 break;
510 case SND_SOC_BIAS_PREPARE:
511 break;
512 case SND_SOC_BIAS_STANDBY:
513 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
514 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
515 wm8770->supplies);
516 if (ret) {
517 dev_err(codec->dev,
518 "Failed to enable supplies: %d\n",
519 ret);
520 return ret;
521 }
522
523 regcache_sync(wm8770->regmap);
524
525
526 snd_soc_write(codec, WM8770_PWDNCTRL, 0);
527 }
528 break;
529 case SND_SOC_BIAS_OFF:
530
531 snd_soc_write(codec, WM8770_PWDNCTRL, 1);
532 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies),
533 wm8770->supplies);
534 break;
535 }
536
537 codec->dapm.bias_level = level;
538 return 0;
539}
540
541#define WM8770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
542 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
543
544static const struct snd_soc_dai_ops wm8770_dai_ops = {
545 .digital_mute = wm8770_mute,
546 .hw_params = wm8770_hw_params,
547 .set_fmt = wm8770_set_fmt,
548 .set_sysclk = wm8770_set_sysclk,
549};
550
551static struct snd_soc_dai_driver wm8770_dai = {
552 .name = "wm8770-hifi",
553 .playback = {
554 .stream_name = "Playback",
555 .channels_min = 2,
556 .channels_max = 2,
557 .rates = SNDRV_PCM_RATE_8000_192000,
558 .formats = WM8770_FORMATS
559 },
560 .capture = {
561 .stream_name = "Capture",
562 .channels_min = 2,
563 .channels_max = 2,
564 .rates = SNDRV_PCM_RATE_8000_96000,
565 .formats = WM8770_FORMATS
566 },
567 .ops = &wm8770_dai_ops,
568 .symmetric_rates = 1
569};
570
571static int wm8770_probe(struct snd_soc_codec *codec)
572{
573 struct wm8770_priv *wm8770;
574 int ret;
575
576 wm8770 = snd_soc_codec_get_drvdata(codec);
577 wm8770->codec = codec;
578
579 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
580 wm8770->supplies);
581 if (ret) {
582 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
583 return ret;
584 }
585
586 ret = wm8770_reset(codec);
587 if (ret < 0) {
588 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
589 goto err_reg_enable;
590 }
591
592
593 snd_soc_update_bits(codec, WM8770_MSDIGVOL, 0x100, 0x100);
594 snd_soc_update_bits(codec, WM8770_MSALGVOL, 0x100, 0x100);
595 snd_soc_update_bits(codec, WM8770_VOUT1RVOL, 0x100, 0x100);
596 snd_soc_update_bits(codec, WM8770_VOUT2RVOL, 0x100, 0x100);
597 snd_soc_update_bits(codec, WM8770_VOUT3RVOL, 0x100, 0x100);
598 snd_soc_update_bits(codec, WM8770_VOUT4RVOL, 0x100, 0x100);
599 snd_soc_update_bits(codec, WM8770_DAC1RVOL, 0x100, 0x100);
600 snd_soc_update_bits(codec, WM8770_DAC2RVOL, 0x100, 0x100);
601 snd_soc_update_bits(codec, WM8770_DAC3RVOL, 0x100, 0x100);
602 snd_soc_update_bits(codec, WM8770_DAC4RVOL, 0x100, 0x100);
603
604
605 snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10, 0x10);
606
607err_reg_enable:
608 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
609 return ret;
610}
611
612static struct snd_soc_codec_driver soc_codec_dev_wm8770 = {
613 .probe = wm8770_probe,
614 .set_bias_level = wm8770_set_bias_level,
615 .idle_bias_off = true,
616
617 .controls = wm8770_snd_controls,
618 .num_controls = ARRAY_SIZE(wm8770_snd_controls),
619 .dapm_widgets = wm8770_dapm_widgets,
620 .num_dapm_widgets = ARRAY_SIZE(wm8770_dapm_widgets),
621 .dapm_routes = wm8770_intercon,
622 .num_dapm_routes = ARRAY_SIZE(wm8770_intercon),
623};
624
625static const struct of_device_id wm8770_of_match[] = {
626 { .compatible = "wlf,wm8770", },
627 { }
628};
629MODULE_DEVICE_TABLE(of, wm8770_of_match);
630
631static const struct regmap_config wm8770_regmap = {
632 .reg_bits = 7,
633 .val_bits = 9,
634 .max_register = WM8770_RESET,
635
636 .reg_defaults = wm8770_reg_defaults,
637 .num_reg_defaults = ARRAY_SIZE(wm8770_reg_defaults),
638 .cache_type = REGCACHE_RBTREE,
639
640 .volatile_reg = wm8770_volatile_reg,
641};
642
643static int wm8770_spi_probe(struct spi_device *spi)
644{
645 struct wm8770_priv *wm8770;
646 int ret, i;
647
648 wm8770 = devm_kzalloc(&spi->dev, sizeof(struct wm8770_priv),
649 GFP_KERNEL);
650 if (!wm8770)
651 return -ENOMEM;
652
653 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++)
654 wm8770->supplies[i].supply = wm8770_supply_names[i];
655
656 ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8770->supplies),
657 wm8770->supplies);
658 if (ret) {
659 dev_err(&spi->dev, "Failed to request supplies: %d\n", ret);
660 return ret;
661 }
662
663 wm8770->disable_nb[0].notifier_call = wm8770_regulator_event_0;
664 wm8770->disable_nb[1].notifier_call = wm8770_regulator_event_1;
665 wm8770->disable_nb[2].notifier_call = wm8770_regulator_event_2;
666
667
668 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) {
669 ret = regulator_register_notifier(wm8770->supplies[i].consumer,
670 &wm8770->disable_nb[i]);
671 if (ret) {
672 dev_err(&spi->dev,
673 "Failed to register regulator notifier: %d\n",
674 ret);
675 }
676 }
677
678 wm8770->regmap = devm_regmap_init_spi(spi, &wm8770_regmap);
679 if (IS_ERR(wm8770->regmap))
680 return PTR_ERR(wm8770->regmap);
681
682 spi_set_drvdata(spi, wm8770);
683
684 ret = snd_soc_register_codec(&spi->dev,
685 &soc_codec_dev_wm8770, &wm8770_dai, 1);
686
687 return ret;
688}
689
690static int wm8770_spi_remove(struct spi_device *spi)
691{
692 struct wm8770_priv *wm8770 = spi_get_drvdata(spi);
693 int i;
694
695 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); ++i)
696 regulator_unregister_notifier(wm8770->supplies[i].consumer,
697 &wm8770->disable_nb[i]);
698
699 snd_soc_unregister_codec(&spi->dev);
700
701 return 0;
702}
703
704static struct spi_driver wm8770_spi_driver = {
705 .driver = {
706 .name = "wm8770",
707 .owner = THIS_MODULE,
708 .of_match_table = wm8770_of_match,
709 },
710 .probe = wm8770_spi_probe,
711 .remove = wm8770_spi_remove
712};
713
714module_spi_driver(wm8770_spi_driver);
715
716MODULE_DESCRIPTION("ASoC WM8770 driver");
717MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");
718MODULE_LICENSE("GPL");
719
