1 /*
2 * wm8770.c -- WM8770 ALSA SoC Audio driver
3 *
4 * Copyright 2010 Wolfson Microelectronics plc
5 *
6 * Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
7 *
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.
11 */
12
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
33 static const char *wm8770_supply_names[WM8770_NUM_SUPPLIES] = {
34 "AVDD1",
35 "AVDD2",
36 "DVDD"
37 };
38
39 static 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
wm8770_volatile_reg(struct device * dev,unsigned int reg)73 static 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
83 struct 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
91 static int vout12supply_event(struct snd_soc_dapm_widget *w,
92 struct snd_kcontrol *kcontrol, int event);
93 static int vout34supply_event(struct snd_soc_dapm_widget *w,
94 struct snd_kcontrol *kcontrol, int event);
95
96 /*
97 * We can't use the same notifier block for more than one supply and
98 * there's no way I can see to get from a callback to the caller
99 * except container_of().
100 */
101 #define WM8770_REGULATOR_EVENT(n) \
102 static 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
113 WM8770_REGULATOR_EVENT(0)
114 WM8770_REGULATOR_EVENT(1)
115 WM8770_REGULATOR_EVENT(2)
116
117 static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0);
118 static const DECLARE_TLV_DB_SCALE(dac_dig_tlv, -12750, 50, 1);
119 static const DECLARE_TLV_DB_SCALE(dac_alg_tlv, -12700, 100, 1);
120
121 static 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
128 static 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
135 static const struct snd_kcontrol_new wm8770_snd_controls[] = {
136 /* global DAC playback controls */
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 /* global VOUT playback controls */
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 /* VOUT1/2/3/4 specific controls */
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 /* DAC1/2/3/4 specific controls */
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 /* ADC specific controls */
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 /* other controls */
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
194 static const char *ain_text[] = {
195 "AIN1", "AIN2", "AIN3", "AIN4",
196 "AIN5", "AIN6", "AIN7", "AIN8"
197 };
198
199 static const struct soc_enum ain_enum =
200 SOC_ENUM_DOUBLE(WM8770_ADCMUX, 0, 4, 8, ain_text);
201
202 static const struct snd_kcontrol_new ain_mux =
203 SOC_DAPM_ENUM("Capture Mux", ain_enum);
204
205 static 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
211 static 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
217 static 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
223 static 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
228 static 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
271 static 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
vout12supply_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)308 static int vout12supply_event(struct snd_soc_dapm_widget *w,
309 struct snd_kcontrol *kcontrol, int event)
310 {
311 struct snd_soc_codec *codec;
312
313 codec = w->codec;
314
315 switch (event) {
316 case SND_SOC_DAPM_PRE_PMU:
317 snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0);
318 break;
319 case SND_SOC_DAPM_POST_PMD:
320 snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0x180);
321 break;
322 }
323
324 return 0;
325 }
326
vout34supply_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)327 static int vout34supply_event(struct snd_soc_dapm_widget *w,
328 struct snd_kcontrol *kcontrol, int event)
329 {
330 struct snd_soc_codec *codec;
331
332 codec = w->codec;
333
334 switch (event) {
335 case SND_SOC_DAPM_PRE_PMU:
336 snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0);
337 break;
338 case SND_SOC_DAPM_POST_PMD:
339 snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0x180);
340 break;
341 }
342
343 return 0;
344 }
345
wm8770_reset(struct snd_soc_codec * codec)346 static int wm8770_reset(struct snd_soc_codec *codec)
347 {
348 return snd_soc_write(codec, WM8770_RESET, 0);
349 }
350
wm8770_set_fmt(struct snd_soc_dai * dai,unsigned int fmt)351 static int wm8770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
352 {
353 struct snd_soc_codec *codec;
354 int iface, master;
355
356 codec = dai->codec;
357
358 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
359 case SND_SOC_DAIFMT_CBM_CFM:
360 master = 0x100;
361 break;
362 case SND_SOC_DAIFMT_CBS_CFS:
363 master = 0;
364 break;
365 default:
366 return -EINVAL;
367 }
368
369 iface = 0;
370 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
371 case SND_SOC_DAIFMT_I2S:
372 iface |= 0x2;
373 break;
374 case SND_SOC_DAIFMT_RIGHT_J:
375 break;
376 case SND_SOC_DAIFMT_LEFT_J:
377 iface |= 0x1;
378 break;
379 default:
380 return -EINVAL;
381 }
382
383 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
384 case SND_SOC_DAIFMT_NB_NF:
385 break;
386 case SND_SOC_DAIFMT_IB_IF:
387 iface |= 0xc;
388 break;
389 case SND_SOC_DAIFMT_IB_NF:
390 iface |= 0x8;
391 break;
392 case SND_SOC_DAIFMT_NB_IF:
393 iface |= 0x4;
394 break;
395 default:
396 return -EINVAL;
397 }
398
399 snd_soc_update_bits(codec, WM8770_IFACECTRL, 0xf, iface);
400 snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x100, master);
401
402 return 0;
403 }
404
405 static const int mclk_ratios[] = {
406 128,
407 192,
408 256,
409 384,
410 512,
411 768
412 };
413
wm8770_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)414 static int wm8770_hw_params(struct snd_pcm_substream *substream,
415 struct snd_pcm_hw_params *params,
416 struct snd_soc_dai *dai)
417 {
418 struct snd_soc_codec *codec;
419 struct wm8770_priv *wm8770;
420 int i;
421 int iface;
422 int shift;
423 int ratio;
424
425 codec = dai->codec;
426 wm8770 = snd_soc_codec_get_drvdata(codec);
427
428 iface = 0;
429 switch (params_format(params)) {
430 case SNDRV_PCM_FORMAT_S16_LE:
431 break;
432 case SNDRV_PCM_FORMAT_S20_3LE:
433 iface |= 0x10;
434 break;
435 case SNDRV_PCM_FORMAT_S24_LE:
436 iface |= 0x20;
437 break;
438 case SNDRV_PCM_FORMAT_S32_LE:
439 iface |= 0x30;
440 break;
441 }
442
443 switch (substream->stream) {
444 case SNDRV_PCM_STREAM_PLAYBACK:
445 i = 0;
446 shift = 4;
447 break;
448 case SNDRV_PCM_STREAM_CAPTURE:
449 i = 2;
450 shift = 0;
451 break;
452 default:
453 return -EINVAL;
454 }
455
456 /* Only need to set MCLK/LRCLK ratio if we're master */
457 if (snd_soc_read(codec, WM8770_MSTRCTRL) & 0x100) {
458 for (; i < ARRAY_SIZE(mclk_ratios); ++i) {
459 ratio = wm8770->sysclk / params_rate(params);
460 if (ratio == mclk_ratios[i])
461 break;
462 }
463
464 if (i == ARRAY_SIZE(mclk_ratios)) {
465 dev_err(codec->dev,
466 "Unable to configure MCLK ratio %d/%d\n",
467 wm8770->sysclk, params_rate(params));
468 return -EINVAL;
469 }
470
471 dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]);
472
473 snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x7 << shift,
474 i << shift);
475 }
476
477 snd_soc_update_bits(codec, WM8770_IFACECTRL, 0x30, iface);
478
479 return 0;
480 }
481
wm8770_mute(struct snd_soc_dai * dai,int mute)482 static int wm8770_mute(struct snd_soc_dai *dai, int mute)
483 {
484 struct snd_soc_codec *codec;
485
486 codec = dai->codec;
487 return snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10,
488 !!mute << 4);
489 }
490
wm8770_set_sysclk(struct snd_soc_dai * dai,int clk_id,unsigned int freq,int dir)491 static int wm8770_set_sysclk(struct snd_soc_dai *dai,
492 int clk_id, unsigned int freq, int dir)
493 {
494 struct snd_soc_codec *codec;
495 struct wm8770_priv *wm8770;
496
497 codec = dai->codec;
498 wm8770 = snd_soc_codec_get_drvdata(codec);
499 wm8770->sysclk = freq;
500 return 0;
501 }
502
wm8770_set_bias_level(struct snd_soc_codec * codec,enum snd_soc_bias_level level)503 static int wm8770_set_bias_level(struct snd_soc_codec *codec,
504 enum snd_soc_bias_level level)
505 {
506 int ret;
507 struct wm8770_priv *wm8770;
508
509 wm8770 = snd_soc_codec_get_drvdata(codec);
510
511 switch (level) {
512 case SND_SOC_BIAS_ON:
513 break;
514 case SND_SOC_BIAS_PREPARE:
515 break;
516 case SND_SOC_BIAS_STANDBY:
517 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
518 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
519 wm8770->supplies);
520 if (ret) {
521 dev_err(codec->dev,
522 "Failed to enable supplies: %d\n",
523 ret);
524 return ret;
525 }
526
527 regcache_sync(wm8770->regmap);
528
529 /* global powerup */
530 snd_soc_write(codec, WM8770_PWDNCTRL, 0);
531 }
532 break;
533 case SND_SOC_BIAS_OFF:
534 /* global powerdown */
535 snd_soc_write(codec, WM8770_PWDNCTRL, 1);
536 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies),
537 wm8770->supplies);
538 break;
539 }
540
541 codec->dapm.bias_level = level;
542 return 0;
543 }
544
545 #define WM8770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
546 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
547
548 static const struct snd_soc_dai_ops wm8770_dai_ops = {
549 .digital_mute = wm8770_mute,
550 .hw_params = wm8770_hw_params,
551 .set_fmt = wm8770_set_fmt,
552 .set_sysclk = wm8770_set_sysclk,
553 };
554
555 static struct snd_soc_dai_driver wm8770_dai = {
556 .name = "wm8770-hifi",
557 .playback = {
558 .stream_name = "Playback",
559 .channels_min = 2,
560 .channels_max = 2,
561 .rates = SNDRV_PCM_RATE_8000_192000,
562 .formats = WM8770_FORMATS
563 },
564 .capture = {
565 .stream_name = "Capture",
566 .channels_min = 2,
567 .channels_max = 2,
568 .rates = SNDRV_PCM_RATE_8000_96000,
569 .formats = WM8770_FORMATS
570 },
571 .ops = &wm8770_dai_ops,
572 .symmetric_rates = 1
573 };
574
wm8770_probe(struct snd_soc_codec * codec)575 static int wm8770_probe(struct snd_soc_codec *codec)
576 {
577 struct wm8770_priv *wm8770;
578 int ret;
579
580 wm8770 = snd_soc_codec_get_drvdata(codec);
581 wm8770->codec = codec;
582
583 ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
584 if (ret < 0) {
585 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
586 return ret;
587 }
588
589 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
590 wm8770->supplies);
591 if (ret) {
592 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
593 return ret;
594 }
595
596 ret = wm8770_reset(codec);
597 if (ret < 0) {
598 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
599 goto err_reg_enable;
600 }
601
602 /* latch the volume update bits */
603 snd_soc_update_bits(codec, WM8770_MSDIGVOL, 0x100, 0x100);
604 snd_soc_update_bits(codec, WM8770_MSALGVOL, 0x100, 0x100);
605 snd_soc_update_bits(codec, WM8770_VOUT1RVOL, 0x100, 0x100);
606 snd_soc_update_bits(codec, WM8770_VOUT2RVOL, 0x100, 0x100);
607 snd_soc_update_bits(codec, WM8770_VOUT3RVOL, 0x100, 0x100);
608 snd_soc_update_bits(codec, WM8770_VOUT4RVOL, 0x100, 0x100);
609 snd_soc_update_bits(codec, WM8770_DAC1RVOL, 0x100, 0x100);
610 snd_soc_update_bits(codec, WM8770_DAC2RVOL, 0x100, 0x100);
611 snd_soc_update_bits(codec, WM8770_DAC3RVOL, 0x100, 0x100);
612 snd_soc_update_bits(codec, WM8770_DAC4RVOL, 0x100, 0x100);
613
614 /* mute all DACs */
615 snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10, 0x10);
616
617 err_reg_enable:
618 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
619 return ret;
620 }
621
622 static struct snd_soc_codec_driver soc_codec_dev_wm8770 = {
623 .probe = wm8770_probe,
624 .set_bias_level = wm8770_set_bias_level,
625 .idle_bias_off = true,
626
627 .controls = wm8770_snd_controls,
628 .num_controls = ARRAY_SIZE(wm8770_snd_controls),
629 .dapm_widgets = wm8770_dapm_widgets,
630 .num_dapm_widgets = ARRAY_SIZE(wm8770_dapm_widgets),
631 .dapm_routes = wm8770_intercon,
632 .num_dapm_routes = ARRAY_SIZE(wm8770_intercon),
633 };
634
635 static const struct of_device_id wm8770_of_match[] = {
636 { .compatible = "wlf,wm8770", },
637 { }
638 };
639 MODULE_DEVICE_TABLE(of, wm8770_of_match);
640
641 static const struct regmap_config wm8770_regmap = {
642 .reg_bits = 7,
643 .val_bits = 9,
644 .max_register = WM8770_RESET,
645
646 .reg_defaults = wm8770_reg_defaults,
647 .num_reg_defaults = ARRAY_SIZE(wm8770_reg_defaults),
648 .cache_type = REGCACHE_RBTREE,
649
650 .volatile_reg = wm8770_volatile_reg,
651 };
652
wm8770_spi_probe(struct spi_device * spi)653 static int wm8770_spi_probe(struct spi_device *spi)
654 {
655 struct wm8770_priv *wm8770;
656 int ret, i;
657
658 wm8770 = devm_kzalloc(&spi->dev, sizeof(struct wm8770_priv),
659 GFP_KERNEL);
660 if (!wm8770)
661 return -ENOMEM;
662
663 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++)
664 wm8770->supplies[i].supply = wm8770_supply_names[i];
665
666 ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8770->supplies),
667 wm8770->supplies);
668 if (ret) {
669 dev_err(&spi->dev, "Failed to request supplies: %d\n", ret);
670 return ret;
671 }
672
673 wm8770->disable_nb[0].notifier_call = wm8770_regulator_event_0;
674 wm8770->disable_nb[1].notifier_call = wm8770_regulator_event_1;
675 wm8770->disable_nb[2].notifier_call = wm8770_regulator_event_2;
676
677 /* This should really be moved into the regulator core */
678 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) {
679 ret = regulator_register_notifier(wm8770->supplies[i].consumer,
680 &wm8770->disable_nb[i]);
681 if (ret) {
682 dev_err(&spi->dev,
683 "Failed to register regulator notifier: %d\n",
684 ret);
685 }
686 }
687
688 wm8770->regmap = devm_regmap_init_spi(spi, &wm8770_regmap);
689 if (IS_ERR(wm8770->regmap))
690 return PTR_ERR(wm8770->regmap);
691
692 spi_set_drvdata(spi, wm8770);
693
694 ret = snd_soc_register_codec(&spi->dev,
695 &soc_codec_dev_wm8770, &wm8770_dai, 1);
696
697 return ret;
698 }
699
wm8770_spi_remove(struct spi_device * spi)700 static int wm8770_spi_remove(struct spi_device *spi)
701 {
702 struct wm8770_priv *wm8770 = spi_get_drvdata(spi);
703 int i;
704
705 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); ++i)
706 regulator_unregister_notifier(wm8770->supplies[i].consumer,
707 &wm8770->disable_nb[i]);
708
709 snd_soc_unregister_codec(&spi->dev);
710
711 return 0;
712 }
713
714 static struct spi_driver wm8770_spi_driver = {
715 .driver = {
716 .name = "wm8770",
717 .owner = THIS_MODULE,
718 .of_match_table = wm8770_of_match,
719 },
720 .probe = wm8770_spi_probe,
721 .remove = wm8770_spi_remove
722 };
723
724 module_spi_driver(wm8770_spi_driver);
725
726 MODULE_DESCRIPTION("ASoC WM8770 driver");
727 MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");
728 MODULE_LICENSE("GPL");
729