1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * wm8770.c -- WM8770 ALSA SoC Audio driver
4 *
5 * Copyright 2010 Wolfson Microelectronics plc
6 *
7 * Author: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
8 */
9
10 #include <linux/module.h>
11 #include <linux/moduleparam.h>
12 #include <linux/init.h>
13 #include <linux/delay.h>
14 #include <linux/pm.h>
15 #include <linux/spi/spi.h>
16 #include <linux/regmap.h>
17 #include <linux/regulator/consumer.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/initval.h>
24 #include <sound/tlv.h>
25
26 #include "wm8770.h"
27
28 #define WM8770_NUM_SUPPLIES 3
29 static const char *wm8770_supply_names[WM8770_NUM_SUPPLIES] = {
30 "AVDD1",
31 "AVDD2",
32 "DVDD"
33 };
34
35 static const struct reg_default wm8770_reg_defaults[] = {
36 { 0, 0x7f },
37 { 1, 0x7f },
38 { 2, 0x7f },
39 { 3, 0x7f },
40 { 4, 0x7f },
41 { 5, 0x7f },
42 { 6, 0x7f },
43 { 7, 0x7f },
44 { 8, 0x7f },
45 { 9, 0xff },
46 { 10, 0xff },
47 { 11, 0xff },
48 { 12, 0xff },
49 { 13, 0xff },
50 { 14, 0xff },
51 { 15, 0xff },
52 { 16, 0xff },
53 { 17, 0xff },
54 { 18, 0 },
55 { 19, 0x90 },
56 { 20, 0 },
57 { 21, 0 },
58 { 22, 0x22 },
59 { 23, 0x22 },
60 { 24, 0x3e },
61 { 25, 0xc },
62 { 26, 0xc },
63 { 27, 0x100 },
64 { 28, 0x189 },
65 { 29, 0x189 },
66 { 30, 0x8770 },
67 };
68
wm8770_volatile_reg(struct device * dev,unsigned int reg)69 static bool wm8770_volatile_reg(struct device *dev, unsigned int reg)
70 {
71 switch (reg) {
72 case WM8770_RESET:
73 return true;
74 default:
75 return false;
76 }
77 }
78
79 struct wm8770_priv {
80 struct regmap *regmap;
81 struct regulator_bulk_data supplies[WM8770_NUM_SUPPLIES];
82 struct notifier_block disable_nb[WM8770_NUM_SUPPLIES];
83 struct snd_soc_component *component;
84 int sysclk;
85 };
86
87 static int vout12supply_event(struct snd_soc_dapm_widget *w,
88 struct snd_kcontrol *kcontrol, int event);
89 static int vout34supply_event(struct snd_soc_dapm_widget *w,
90 struct snd_kcontrol *kcontrol, int event);
91
92 /*
93 * We can't use the same notifier block for more than one supply and
94 * there's no way I can see to get from a callback to the caller
95 * except container_of().
96 */
97 #define WM8770_REGULATOR_EVENT(n) \
98 static int wm8770_regulator_event_##n(struct notifier_block *nb, \
99 unsigned long event, void *data) \
100 { \
101 struct wm8770_priv *wm8770 = container_of(nb, struct wm8770_priv, \
102 disable_nb[n]); \
103 if (event & REGULATOR_EVENT_DISABLE) { \
104 regcache_mark_dirty(wm8770->regmap); \
105 } \
106 return 0; \
107 }
108
109 WM8770_REGULATOR_EVENT(0)
110 WM8770_REGULATOR_EVENT(1)
111 WM8770_REGULATOR_EVENT(2)
112
113 static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0);
114 static const DECLARE_TLV_DB_SCALE(dac_dig_tlv, -12750, 50, 1);
115 static const DECLARE_TLV_DB_SCALE(dac_alg_tlv, -12700, 100, 1);
116
117 static const char *dac_phase_text[][2] = {
118 { "DAC1 Normal", "DAC1 Inverted" },
119 { "DAC2 Normal", "DAC2 Inverted" },
120 { "DAC3 Normal", "DAC3 Inverted" },
121 { "DAC4 Normal", "DAC4 Inverted" },
122 };
123
124 static const struct soc_enum dac_phase[] = {
125 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 0, 1, 2, dac_phase_text[0]),
126 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 2, 3, 2, dac_phase_text[1]),
127 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 4, 5, 2, dac_phase_text[2]),
128 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 6, 7, 2, dac_phase_text[3]),
129 };
130
131 static const struct snd_kcontrol_new wm8770_snd_controls[] = {
132 /* global DAC playback controls */
133 SOC_SINGLE_TLV("DAC Playback Volume", WM8770_MSDIGVOL, 0, 255, 0,
134 dac_dig_tlv),
135 SOC_SINGLE("DAC Playback Switch", WM8770_DACMUTE, 4, 1, 1),
136 SOC_SINGLE("DAC Playback ZC Switch", WM8770_DACCTRL1, 0, 1, 0),
137
138 /* global VOUT playback controls */
139 SOC_SINGLE_TLV("VOUT Playback Volume", WM8770_MSALGVOL, 0, 127, 0,
140 dac_alg_tlv),
141 SOC_SINGLE("VOUT Playback ZC Switch", WM8770_MSALGVOL, 7, 1, 0),
142
143 /* VOUT1/2/3/4 specific controls */
144 SOC_DOUBLE_R_TLV("VOUT1 Playback Volume", WM8770_VOUT1LVOL,
145 WM8770_VOUT1RVOL, 0, 127, 0, dac_alg_tlv),
146 SOC_DOUBLE_R("VOUT1 Playback ZC Switch", WM8770_VOUT1LVOL,
147 WM8770_VOUT1RVOL, 7, 1, 0),
148 SOC_DOUBLE_R_TLV("VOUT2 Playback Volume", WM8770_VOUT2LVOL,
149 WM8770_VOUT2RVOL, 0, 127, 0, dac_alg_tlv),
150 SOC_DOUBLE_R("VOUT2 Playback ZC Switch", WM8770_VOUT2LVOL,
151 WM8770_VOUT2RVOL, 7, 1, 0),
152 SOC_DOUBLE_R_TLV("VOUT3 Playback Volume", WM8770_VOUT3LVOL,
153 WM8770_VOUT3RVOL, 0, 127, 0, dac_alg_tlv),
154 SOC_DOUBLE_R("VOUT3 Playback ZC Switch", WM8770_VOUT3LVOL,
155 WM8770_VOUT3RVOL, 7, 1, 0),
156 SOC_DOUBLE_R_TLV("VOUT4 Playback Volume", WM8770_VOUT4LVOL,
157 WM8770_VOUT4RVOL, 0, 127, 0, dac_alg_tlv),
158 SOC_DOUBLE_R("VOUT4 Playback ZC Switch", WM8770_VOUT4LVOL,
159 WM8770_VOUT4RVOL, 7, 1, 0),
160
161 /* DAC1/2/3/4 specific controls */
162 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", WM8770_DAC1LVOL,
163 WM8770_DAC1RVOL, 0, 255, 0, dac_dig_tlv),
164 SOC_SINGLE("DAC1 Deemphasis Switch", WM8770_DACCTRL2, 0, 1, 0),
165 SOC_ENUM("DAC1 Phase", dac_phase[0]),
166 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", WM8770_DAC2LVOL,
167 WM8770_DAC2RVOL, 0, 255, 0, dac_dig_tlv),
168 SOC_SINGLE("DAC2 Deemphasis Switch", WM8770_DACCTRL2, 1, 1, 0),
169 SOC_ENUM("DAC2 Phase", dac_phase[1]),
170 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", WM8770_DAC3LVOL,
171 WM8770_DAC3RVOL, 0, 255, 0, dac_dig_tlv),
172 SOC_SINGLE("DAC3 Deemphasis Switch", WM8770_DACCTRL2, 2, 1, 0),
173 SOC_ENUM("DAC3 Phase", dac_phase[2]),
174 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", WM8770_DAC4LVOL,
175 WM8770_DAC4RVOL, 0, 255, 0, dac_dig_tlv),
176 SOC_SINGLE("DAC4 Deemphasis Switch", WM8770_DACCTRL2, 3, 1, 0),
177 SOC_ENUM("DAC4 Phase", dac_phase[3]),
178
179 /* ADC specific controls */
180 SOC_DOUBLE_R_TLV("Capture Volume", WM8770_ADCLCTRL, WM8770_ADCRCTRL,
181 0, 31, 0, adc_tlv),
182 SOC_DOUBLE_R("Capture Switch", WM8770_ADCLCTRL, WM8770_ADCRCTRL,
183 5, 1, 1),
184
185 /* other controls */
186 SOC_SINGLE("ADC 128x Oversampling Switch", WM8770_MSTRCTRL, 3, 1, 0),
187 SOC_SINGLE("ADC Highpass Filter Switch", WM8770_IFACECTRL, 8, 1, 1)
188 };
189
190 static const char *ain_text[] = {
191 "AIN1", "AIN2", "AIN3", "AIN4",
192 "AIN5", "AIN6", "AIN7", "AIN8"
193 };
194
195 static SOC_ENUM_DOUBLE_DECL(ain_enum,
196 WM8770_ADCMUX, 0, 4, ain_text);
197
198 static const struct snd_kcontrol_new ain_mux =
199 SOC_DAPM_ENUM("Capture Mux", ain_enum);
200
201 static const struct snd_kcontrol_new vout1_mix_controls[] = {
202 SOC_DAPM_SINGLE("DAC1 Switch", WM8770_OUTMUX1, 0, 1, 0),
203 SOC_DAPM_SINGLE("AUX1 Switch", WM8770_OUTMUX1, 1, 1, 0),
204 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 2, 1, 0)
205 };
206
207 static const struct snd_kcontrol_new vout2_mix_controls[] = {
208 SOC_DAPM_SINGLE("DAC2 Switch", WM8770_OUTMUX1, 3, 1, 0),
209 SOC_DAPM_SINGLE("AUX2 Switch", WM8770_OUTMUX1, 4, 1, 0),
210 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 5, 1, 0)
211 };
212
213 static const struct snd_kcontrol_new vout3_mix_controls[] = {
214 SOC_DAPM_SINGLE("DAC3 Switch", WM8770_OUTMUX2, 0, 1, 0),
215 SOC_DAPM_SINGLE("AUX3 Switch", WM8770_OUTMUX2, 1, 1, 0),
216 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 2, 1, 0)
217 };
218
219 static const struct snd_kcontrol_new vout4_mix_controls[] = {
220 SOC_DAPM_SINGLE("DAC4 Switch", WM8770_OUTMUX2, 3, 1, 0),
221 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 4, 1, 0)
222 };
223
224 static const struct snd_soc_dapm_widget wm8770_dapm_widgets[] = {
225 SND_SOC_DAPM_INPUT("AUX1"),
226 SND_SOC_DAPM_INPUT("AUX2"),
227 SND_SOC_DAPM_INPUT("AUX3"),
228
229 SND_SOC_DAPM_INPUT("AIN1"),
230 SND_SOC_DAPM_INPUT("AIN2"),
231 SND_SOC_DAPM_INPUT("AIN3"),
232 SND_SOC_DAPM_INPUT("AIN4"),
233 SND_SOC_DAPM_INPUT("AIN5"),
234 SND_SOC_DAPM_INPUT("AIN6"),
235 SND_SOC_DAPM_INPUT("AIN7"),
236 SND_SOC_DAPM_INPUT("AIN8"),
237
238 SND_SOC_DAPM_MUX("Capture Mux", WM8770_ADCMUX, 8, 1, &ain_mux),
239
240 SND_SOC_DAPM_ADC("ADC", "Capture", WM8770_PWDNCTRL, 1, 1),
241
242 SND_SOC_DAPM_DAC("DAC1", "Playback", WM8770_PWDNCTRL, 2, 1),
243 SND_SOC_DAPM_DAC("DAC2", "Playback", WM8770_PWDNCTRL, 3, 1),
244 SND_SOC_DAPM_DAC("DAC3", "Playback", WM8770_PWDNCTRL, 4, 1),
245 SND_SOC_DAPM_DAC("DAC4", "Playback", WM8770_PWDNCTRL, 5, 1),
246
247 SND_SOC_DAPM_SUPPLY("VOUT12 Supply", SND_SOC_NOPM, 0, 0,
248 vout12supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
249 SND_SOC_DAPM_SUPPLY("VOUT34 Supply", SND_SOC_NOPM, 0, 0,
250 vout34supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
251
252 SND_SOC_DAPM_MIXER("VOUT1 Mixer", SND_SOC_NOPM, 0, 0,
253 vout1_mix_controls, ARRAY_SIZE(vout1_mix_controls)),
254 SND_SOC_DAPM_MIXER("VOUT2 Mixer", SND_SOC_NOPM, 0, 0,
255 vout2_mix_controls, ARRAY_SIZE(vout2_mix_controls)),
256 SND_SOC_DAPM_MIXER("VOUT3 Mixer", SND_SOC_NOPM, 0, 0,
257 vout3_mix_controls, ARRAY_SIZE(vout3_mix_controls)),
258 SND_SOC_DAPM_MIXER("VOUT4 Mixer", SND_SOC_NOPM, 0, 0,
259 vout4_mix_controls, ARRAY_SIZE(vout4_mix_controls)),
260
261 SND_SOC_DAPM_OUTPUT("VOUT1"),
262 SND_SOC_DAPM_OUTPUT("VOUT2"),
263 SND_SOC_DAPM_OUTPUT("VOUT3"),
264 SND_SOC_DAPM_OUTPUT("VOUT4")
265 };
266
267 static const struct snd_soc_dapm_route wm8770_intercon[] = {
268 { "Capture Mux", "AIN1", "AIN1" },
269 { "Capture Mux", "AIN2", "AIN2" },
270 { "Capture Mux", "AIN3", "AIN3" },
271 { "Capture Mux", "AIN4", "AIN4" },
272 { "Capture Mux", "AIN5", "AIN5" },
273 { "Capture Mux", "AIN6", "AIN6" },
274 { "Capture Mux", "AIN7", "AIN7" },
275 { "Capture Mux", "AIN8", "AIN8" },
276
277 { "ADC", NULL, "Capture Mux" },
278
279 { "VOUT1 Mixer", NULL, "VOUT12 Supply" },
280 { "VOUT1 Mixer", "DAC1 Switch", "DAC1" },
281 { "VOUT1 Mixer", "AUX1 Switch", "AUX1" },
282 { "VOUT1 Mixer", "Bypass Switch", "Capture Mux" },
283
284 { "VOUT2 Mixer", NULL, "VOUT12 Supply" },
285 { "VOUT2 Mixer", "DAC2 Switch", "DAC2" },
286 { "VOUT2 Mixer", "AUX2 Switch", "AUX2" },
287 { "VOUT2 Mixer", "Bypass Switch", "Capture Mux" },
288
289 { "VOUT3 Mixer", NULL, "VOUT34 Supply" },
290 { "VOUT3 Mixer", "DAC3 Switch", "DAC3" },
291 { "VOUT3 Mixer", "AUX3 Switch", "AUX3" },
292 { "VOUT3 Mixer", "Bypass Switch", "Capture Mux" },
293
294 { "VOUT4 Mixer", NULL, "VOUT34 Supply" },
295 { "VOUT4 Mixer", "DAC4 Switch", "DAC4" },
296 { "VOUT4 Mixer", "Bypass Switch", "Capture Mux" },
297
298 { "VOUT1", NULL, "VOUT1 Mixer" },
299 { "VOUT2", NULL, "VOUT2 Mixer" },
300 { "VOUT3", NULL, "VOUT3 Mixer" },
301 { "VOUT4", NULL, "VOUT4 Mixer" }
302 };
303
vout12supply_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)304 static int vout12supply_event(struct snd_soc_dapm_widget *w,
305 struct snd_kcontrol *kcontrol, int event)
306 {
307 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
308
309 switch (event) {
310 case SND_SOC_DAPM_PRE_PMU:
311 snd_soc_component_update_bits(component, WM8770_OUTMUX1, 0x180, 0);
312 break;
313 case SND_SOC_DAPM_POST_PMD:
314 snd_soc_component_update_bits(component, WM8770_OUTMUX1, 0x180, 0x180);
315 break;
316 }
317
318 return 0;
319 }
320
vout34supply_event(struct snd_soc_dapm_widget * w,struct snd_kcontrol * kcontrol,int event)321 static int vout34supply_event(struct snd_soc_dapm_widget *w,
322 struct snd_kcontrol *kcontrol, int event)
323 {
324 struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
325
326 switch (event) {
327 case SND_SOC_DAPM_PRE_PMU:
328 snd_soc_component_update_bits(component, WM8770_OUTMUX2, 0x180, 0);
329 break;
330 case SND_SOC_DAPM_POST_PMD:
331 snd_soc_component_update_bits(component, WM8770_OUTMUX2, 0x180, 0x180);
332 break;
333 }
334
335 return 0;
336 }
337
wm8770_reset(struct snd_soc_component * component)338 static int wm8770_reset(struct snd_soc_component *component)
339 {
340 return snd_soc_component_write(component, WM8770_RESET, 0);
341 }
342
wm8770_set_fmt(struct snd_soc_dai * dai,unsigned int fmt)343 static int wm8770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
344 {
345 struct snd_soc_component *component;
346 int iface, master;
347
348 component = dai->component;
349
350 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
351 case SND_SOC_DAIFMT_CBP_CFP:
352 master = 0x100;
353 break;
354 case SND_SOC_DAIFMT_CBC_CFC:
355 master = 0;
356 break;
357 default:
358 return -EINVAL;
359 }
360
361 iface = 0;
362 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
363 case SND_SOC_DAIFMT_I2S:
364 iface |= 0x2;
365 break;
366 case SND_SOC_DAIFMT_RIGHT_J:
367 break;
368 case SND_SOC_DAIFMT_LEFT_J:
369 iface |= 0x1;
370 break;
371 default:
372 return -EINVAL;
373 }
374
375 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
376 case SND_SOC_DAIFMT_NB_NF:
377 break;
378 case SND_SOC_DAIFMT_IB_IF:
379 iface |= 0xc;
380 break;
381 case SND_SOC_DAIFMT_IB_NF:
382 iface |= 0x8;
383 break;
384 case SND_SOC_DAIFMT_NB_IF:
385 iface |= 0x4;
386 break;
387 default:
388 return -EINVAL;
389 }
390
391 snd_soc_component_update_bits(component, WM8770_IFACECTRL, 0xf, iface);
392 snd_soc_component_update_bits(component, WM8770_MSTRCTRL, 0x100, master);
393
394 return 0;
395 }
396
397 static const int mclk_ratios[] = {
398 128,
399 192,
400 256,
401 384,
402 512,
403 768
404 };
405
wm8770_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)406 static int wm8770_hw_params(struct snd_pcm_substream *substream,
407 struct snd_pcm_hw_params *params,
408 struct snd_soc_dai *dai)
409 {
410 struct snd_soc_component *component;
411 struct wm8770_priv *wm8770;
412 int i;
413 int iface;
414 int shift;
415 int ratio;
416
417 component = dai->component;
418 wm8770 = snd_soc_component_get_drvdata(component);
419
420 iface = 0;
421 switch (params_width(params)) {
422 case 16:
423 break;
424 case 20:
425 iface |= 0x10;
426 break;
427 case 24:
428 iface |= 0x20;
429 break;
430 case 32:
431 iface |= 0x30;
432 break;
433 }
434
435 switch (substream->stream) {
436 case SNDRV_PCM_STREAM_PLAYBACK:
437 i = 0;
438 shift = 4;
439 break;
440 case SNDRV_PCM_STREAM_CAPTURE:
441 i = 2;
442 shift = 0;
443 break;
444 default:
445 return -EINVAL;
446 }
447
448 /* Only need to set MCLK/LRCLK ratio if we're master */
449 if (snd_soc_component_read(component, WM8770_MSTRCTRL) & 0x100) {
450 for (; i < ARRAY_SIZE(mclk_ratios); ++i) {
451 ratio = wm8770->sysclk / params_rate(params);
452 if (ratio == mclk_ratios[i])
453 break;
454 }
455
456 if (i == ARRAY_SIZE(mclk_ratios)) {
457 dev_err(component->dev,
458 "Unable to configure MCLK ratio %d/%d\n",
459 wm8770->sysclk, params_rate(params));
460 return -EINVAL;
461 }
462
463 dev_dbg(component->dev, "MCLK is %dfs\n", mclk_ratios[i]);
464
465 snd_soc_component_update_bits(component, WM8770_MSTRCTRL, 0x7 << shift,
466 i << shift);
467 }
468
469 snd_soc_component_update_bits(component, WM8770_IFACECTRL, 0x30, iface);
470
471 return 0;
472 }
473
wm8770_mute(struct snd_soc_dai * dai,int mute,int direction)474 static int wm8770_mute(struct snd_soc_dai *dai, int mute, int direction)
475 {
476 struct snd_soc_component *component;
477
478 component = dai->component;
479 return snd_soc_component_update_bits(component, WM8770_DACMUTE, 0x10,
480 !!mute << 4);
481 }
482
wm8770_set_sysclk(struct snd_soc_dai * dai,int clk_id,unsigned int freq,int dir)483 static int wm8770_set_sysclk(struct snd_soc_dai *dai,
484 int clk_id, unsigned int freq, int dir)
485 {
486 struct snd_soc_component *component;
487 struct wm8770_priv *wm8770;
488
489 component = dai->component;
490 wm8770 = snd_soc_component_get_drvdata(component);
491 wm8770->sysclk = freq;
492 return 0;
493 }
494
wm8770_set_bias_level(struct snd_soc_component * component,enum snd_soc_bias_level level)495 static int wm8770_set_bias_level(struct snd_soc_component *component,
496 enum snd_soc_bias_level level)
497 {
498 int ret;
499 struct snd_soc_dapm_context *dapm = snd_soc_component_to_dapm(component);
500 struct wm8770_priv *wm8770;
501
502 wm8770 = snd_soc_component_get_drvdata(component);
503
504 switch (level) {
505 case SND_SOC_BIAS_ON:
506 break;
507 case SND_SOC_BIAS_PREPARE:
508 break;
509 case SND_SOC_BIAS_STANDBY:
510 if (snd_soc_dapm_get_bias_level(dapm) == SND_SOC_BIAS_OFF) {
511 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
512 wm8770->supplies);
513 if (ret) {
514 dev_err(component->dev,
515 "Failed to enable supplies: %d\n",
516 ret);
517 return ret;
518 }
519
520 regcache_sync(wm8770->regmap);
521
522 /* global powerup */
523 snd_soc_component_write(component, WM8770_PWDNCTRL, 0);
524 }
525 break;
526 case SND_SOC_BIAS_OFF:
527 /* global powerdown */
528 snd_soc_component_write(component, WM8770_PWDNCTRL, 1);
529 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies),
530 wm8770->supplies);
531 break;
532 }
533
534 return 0;
535 }
536
537 #define WM8770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
538 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
539
540 static const struct snd_soc_dai_ops wm8770_dai_ops = {
541 .mute_stream = wm8770_mute,
542 .hw_params = wm8770_hw_params,
543 .set_fmt = wm8770_set_fmt,
544 .set_sysclk = wm8770_set_sysclk,
545 .no_capture_mute = 1,
546 };
547
548 static struct snd_soc_dai_driver wm8770_dai = {
549 .name = "wm8770-hifi",
550 .playback = {
551 .stream_name = "Playback",
552 .channels_min = 2,
553 .channels_max = 2,
554 .rates = SNDRV_PCM_RATE_8000_192000,
555 .formats = WM8770_FORMATS
556 },
557 .capture = {
558 .stream_name = "Capture",
559 .channels_min = 2,
560 .channels_max = 2,
561 .rates = SNDRV_PCM_RATE_8000_96000,
562 .formats = WM8770_FORMATS
563 },
564 .ops = &wm8770_dai_ops,
565 .symmetric_rate = 1
566 };
567
wm8770_probe(struct snd_soc_component * component)568 static int wm8770_probe(struct snd_soc_component *component)
569 {
570 struct wm8770_priv *wm8770;
571 int ret;
572
573 wm8770 = snd_soc_component_get_drvdata(component);
574 wm8770->component = component;
575
576 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
577 wm8770->supplies);
578 if (ret) {
579 dev_err(component->dev, "Failed to enable supplies: %d\n", ret);
580 return ret;
581 }
582
583 ret = wm8770_reset(component);
584 if (ret < 0) {
585 dev_err(component->dev, "Failed to issue reset: %d\n", ret);
586 goto err_reg_enable;
587 }
588
589 /* latch the volume update bits */
590 snd_soc_component_update_bits(component, WM8770_MSDIGVOL, 0x100, 0x100);
591 snd_soc_component_update_bits(component, WM8770_MSALGVOL, 0x100, 0x100);
592 snd_soc_component_update_bits(component, WM8770_VOUT1RVOL, 0x100, 0x100);
593 snd_soc_component_update_bits(component, WM8770_VOUT2RVOL, 0x100, 0x100);
594 snd_soc_component_update_bits(component, WM8770_VOUT3RVOL, 0x100, 0x100);
595 snd_soc_component_update_bits(component, WM8770_VOUT4RVOL, 0x100, 0x100);
596 snd_soc_component_update_bits(component, WM8770_DAC1RVOL, 0x100, 0x100);
597 snd_soc_component_update_bits(component, WM8770_DAC2RVOL, 0x100, 0x100);
598 snd_soc_component_update_bits(component, WM8770_DAC3RVOL, 0x100, 0x100);
599 snd_soc_component_update_bits(component, WM8770_DAC4RVOL, 0x100, 0x100);
600
601 /* mute all DACs */
602 snd_soc_component_update_bits(component, WM8770_DACMUTE, 0x10, 0x10);
603
604 err_reg_enable:
605 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
606 return ret;
607 }
608
609 static const struct snd_soc_component_driver soc_component_dev_wm8770 = {
610 .probe = wm8770_probe,
611 .set_bias_level = wm8770_set_bias_level,
612 .controls = wm8770_snd_controls,
613 .num_controls = ARRAY_SIZE(wm8770_snd_controls),
614 .dapm_widgets = wm8770_dapm_widgets,
615 .num_dapm_widgets = ARRAY_SIZE(wm8770_dapm_widgets),
616 .dapm_routes = wm8770_intercon,
617 .num_dapm_routes = ARRAY_SIZE(wm8770_intercon),
618 .use_pmdown_time = 1,
619 .endianness = 1,
620 };
621
622 static const struct of_device_id wm8770_of_match[] = {
623 { .compatible = "wlf,wm8770", },
624 { }
625 };
626 MODULE_DEVICE_TABLE(of, wm8770_of_match);
627
628 static const struct regmap_config wm8770_regmap = {
629 .reg_bits = 7,
630 .val_bits = 9,
631 .max_register = WM8770_RESET,
632
633 .reg_defaults = wm8770_reg_defaults,
634 .num_reg_defaults = ARRAY_SIZE(wm8770_reg_defaults),
635 .cache_type = REGCACHE_MAPLE,
636
637 .volatile_reg = wm8770_volatile_reg,
638 };
639
wm8770_spi_probe(struct spi_device * spi)640 static int wm8770_spi_probe(struct spi_device *spi)
641 {
642 struct wm8770_priv *wm8770;
643 int ret, i;
644
645 wm8770 = devm_kzalloc(&spi->dev, sizeof(struct wm8770_priv),
646 GFP_KERNEL);
647 if (!wm8770)
648 return -ENOMEM;
649
650 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++)
651 wm8770->supplies[i].supply = wm8770_supply_names[i];
652
653 ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8770->supplies),
654 wm8770->supplies);
655 if (ret) {
656 dev_err(&spi->dev, "Failed to request supplies: %d\n", ret);
657 return ret;
658 }
659
660 wm8770->disable_nb[0].notifier_call = wm8770_regulator_event_0;
661 wm8770->disable_nb[1].notifier_call = wm8770_regulator_event_1;
662 wm8770->disable_nb[2].notifier_call = wm8770_regulator_event_2;
663
664 /* This should really be moved into the regulator core */
665 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) {
666 ret = devm_regulator_register_notifier(
667 wm8770->supplies[i].consumer,
668 &wm8770->disable_nb[i]);
669 if (ret) {
670 dev_err(&spi->dev,
671 "Failed to register regulator notifier: %d\n",
672 ret);
673 }
674 }
675
676 wm8770->regmap = devm_regmap_init_spi(spi, &wm8770_regmap);
677 if (IS_ERR(wm8770->regmap))
678 return PTR_ERR(wm8770->regmap);
679
680 spi_set_drvdata(spi, wm8770);
681
682 ret = devm_snd_soc_register_component(&spi->dev,
683 &soc_component_dev_wm8770, &wm8770_dai, 1);
684
685 return ret;
686 }
687
688 static struct spi_driver wm8770_spi_driver = {
689 .driver = {
690 .name = "wm8770",
691 .of_match_table = wm8770_of_match,
692 },
693 .probe = wm8770_spi_probe,
694 };
695
696 module_spi_driver(wm8770_spi_driver);
697
698 MODULE_DESCRIPTION("ASoC WM8770 driver");
699 MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");
700 MODULE_LICENSE("GPL");
701