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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
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_component *component;
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 * 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) \
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 /* 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
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_component *component = snd_soc_dapm_to_component(w->dapm);
312
313 switch (event) {
314 case SND_SOC_DAPM_PRE_PMU:
315 snd_soc_component_update_bits(component, WM8770_OUTMUX1, 0x180, 0);
316 break;
317 case SND_SOC_DAPM_POST_PMD:
318 snd_soc_component_update_bits(component, 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_component *component = snd_soc_dapm_to_component(w->dapm);
329
330 switch (event) {
331 case SND_SOC_DAPM_PRE_PMU:
332 snd_soc_component_update_bits(component, WM8770_OUTMUX2, 0x180, 0);
333 break;
334 case SND_SOC_DAPM_POST_PMD:
335 snd_soc_component_update_bits(component, WM8770_OUTMUX2, 0x180, 0x180);
336 break;
337 }
338
339 return 0;
340}
341
342static int wm8770_reset(struct snd_soc_component *component)
343{
344 return snd_soc_component_write(component, WM8770_RESET, 0);
345}
346
347static int wm8770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
348{
349 struct snd_soc_component *component;
350 int iface, master;
351
352 component = dai->component;
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_component_update_bits(component, WM8770_IFACECTRL, 0xf, iface);
396 snd_soc_component_update_bits(component, 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_component *component;
415 struct wm8770_priv *wm8770;
416 int i;
417 int iface;
418 int shift;
419 int ratio;
420
421 component = dai->component;
422 wm8770 = snd_soc_component_get_drvdata(component);
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 /* Only need to set MCLK/LRCLK ratio if we're master */
453 if (snd_soc_component_read32(component, 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(component->dev,
462 "Unable to configure MCLK ratio %d/%d\n",
463 wm8770->sysclk, params_rate(params));
464 return -EINVAL;
465 }
466
467 dev_dbg(component->dev, "MCLK is %dfs\n", mclk_ratios[i]);
468
469 snd_soc_component_update_bits(component, WM8770_MSTRCTRL, 0x7 << shift,
470 i << shift);
471 }
472
473 snd_soc_component_update_bits(component, 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_component *component;
481
482 component = dai->component;
483 return snd_soc_component_update_bits(component, 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_component *component;
491 struct wm8770_priv *wm8770;
492
493 component = dai->component;
494 wm8770 = snd_soc_component_get_drvdata(component);
495 wm8770->sysclk = freq;
496 return 0;
497}
498
499static int wm8770_set_bias_level(struct snd_soc_component *component,
500 enum snd_soc_bias_level level)
501{
502 int ret;
503 struct wm8770_priv *wm8770;
504
505 wm8770 = snd_soc_component_get_drvdata(component);
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 (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
514 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
515 wm8770->supplies);
516 if (ret) {
517 dev_err(component->dev,
518 "Failed to enable supplies: %d\n",
519 ret);
520 return ret;
521 }
522
523 regcache_sync(wm8770->regmap);
524
525 /* global powerup */
526 snd_soc_component_write(component, WM8770_PWDNCTRL, 0);
527 }
528 break;
529 case SND_SOC_BIAS_OFF:
530 /* global powerdown */
531 snd_soc_component_write(component, WM8770_PWDNCTRL, 1);
532 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies),
533 wm8770->supplies);
534 break;
535 }
536
537 return 0;
538}
539
540#define WM8770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
541 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
542
543static const struct snd_soc_dai_ops wm8770_dai_ops = {
544 .digital_mute = wm8770_mute,
545 .hw_params = wm8770_hw_params,
546 .set_fmt = wm8770_set_fmt,
547 .set_sysclk = wm8770_set_sysclk,
548};
549
550static struct snd_soc_dai_driver wm8770_dai = {
551 .name = "wm8770-hifi",
552 .playback = {
553 .stream_name = "Playback",
554 .channels_min = 2,
555 .channels_max = 2,
556 .rates = SNDRV_PCM_RATE_8000_192000,
557 .formats = WM8770_FORMATS
558 },
559 .capture = {
560 .stream_name = "Capture",
561 .channels_min = 2,
562 .channels_max = 2,
563 .rates = SNDRV_PCM_RATE_8000_96000,
564 .formats = WM8770_FORMATS
565 },
566 .ops = &wm8770_dai_ops,
567 .symmetric_rates = 1
568};
569
570static int wm8770_probe(struct snd_soc_component *component)
571{
572 struct wm8770_priv *wm8770;
573 int ret;
574
575 wm8770 = snd_soc_component_get_drvdata(component);
576 wm8770->component = component;
577
578 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
579 wm8770->supplies);
580 if (ret) {
581 dev_err(component->dev, "Failed to enable supplies: %d\n", ret);
582 return ret;
583 }
584
585 ret = wm8770_reset(component);
586 if (ret < 0) {
587 dev_err(component->dev, "Failed to issue reset: %d\n", ret);
588 goto err_reg_enable;
589 }
590
591 /* latch the volume update bits */
592 snd_soc_component_update_bits(component, WM8770_MSDIGVOL, 0x100, 0x100);
593 snd_soc_component_update_bits(component, WM8770_MSALGVOL, 0x100, 0x100);
594 snd_soc_component_update_bits(component, WM8770_VOUT1RVOL, 0x100, 0x100);
595 snd_soc_component_update_bits(component, WM8770_VOUT2RVOL, 0x100, 0x100);
596 snd_soc_component_update_bits(component, WM8770_VOUT3RVOL, 0x100, 0x100);
597 snd_soc_component_update_bits(component, WM8770_VOUT4RVOL, 0x100, 0x100);
598 snd_soc_component_update_bits(component, WM8770_DAC1RVOL, 0x100, 0x100);
599 snd_soc_component_update_bits(component, WM8770_DAC2RVOL, 0x100, 0x100);
600 snd_soc_component_update_bits(component, WM8770_DAC3RVOL, 0x100, 0x100);
601 snd_soc_component_update_bits(component, WM8770_DAC4RVOL, 0x100, 0x100);
602
603 /* mute all DACs */
604 snd_soc_component_update_bits(component, WM8770_DACMUTE, 0x10, 0x10);
605
606err_reg_enable:
607 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
608 return ret;
609}
610
611static const struct snd_soc_component_driver soc_component_dev_wm8770 = {
612 .probe = wm8770_probe,
613 .set_bias_level = wm8770_set_bias_level,
614 .controls = wm8770_snd_controls,
615 .num_controls = ARRAY_SIZE(wm8770_snd_controls),
616 .dapm_widgets = wm8770_dapm_widgets,
617 .num_dapm_widgets = ARRAY_SIZE(wm8770_dapm_widgets),
618 .dapm_routes = wm8770_intercon,
619 .num_dapm_routes = ARRAY_SIZE(wm8770_intercon),
620 .use_pmdown_time = 1,
621 .endianness = 1,
622 .non_legacy_dai_naming = 1,
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 /* This should really be moved into the regulator core */
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 = devm_snd_soc_register_component(&spi->dev,
685 &soc_component_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 return 0;
700}
701
702static struct spi_driver wm8770_spi_driver = {
703 .driver = {
704 .name = "wm8770",
705 .of_match_table = wm8770_of_match,
706 },
707 .probe = wm8770_spi_probe,
708 .remove = wm8770_spi_remove
709};
710
711module_spi_driver(wm8770_spi_driver);
712
713MODULE_DESCRIPTION("ASoC WM8770 driver");
714MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");
715MODULE_LICENSE("GPL");
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/pm.h>
18#include <linux/platform_device.h>
19#include <linux/spi/spi.h>
20#include <linux/regulator/consumer.h>
21#include <linux/slab.h>
22#include <sound/core.h>
23#include <sound/pcm.h>
24#include <sound/pcm_params.h>
25#include <sound/soc.h>
26#include <sound/initval.h>
27#include <sound/tlv.h>
28
29#include "wm8770.h"
30
31#define WM8770_NUM_SUPPLIES 3
32static const char *wm8770_supply_names[WM8770_NUM_SUPPLIES] = {
33 "AVDD1",
34 "AVDD2",
35 "DVDD"
36};
37
38static const u16 wm8770_reg_defs[WM8770_CACHEREGNUM] = {
39 0x7f, 0x7f, 0x7f, 0x7f,
40 0x7f, 0x7f, 0x7f, 0x7f,
41 0x7f, 0xff, 0xff, 0xff,
42 0xff, 0xff, 0xff, 0xff,
43 0xff, 0xff, 0, 0x90, 0,
44 0, 0x22, 0x22, 0x3e,
45 0xc, 0xc, 0x100, 0x189,
46 0x189, 0x8770
47};
48
49struct wm8770_priv {
50 enum snd_soc_control_type control_type;
51 struct regulator_bulk_data supplies[WM8770_NUM_SUPPLIES];
52 struct notifier_block disable_nb[WM8770_NUM_SUPPLIES];
53 struct snd_soc_codec *codec;
54 int sysclk;
55};
56
57static int vout12supply_event(struct snd_soc_dapm_widget *w,
58 struct snd_kcontrol *kcontrol, int event);
59static int vout34supply_event(struct snd_soc_dapm_widget *w,
60 struct snd_kcontrol *kcontrol, int event);
61
62/*
63 * We can't use the same notifier block for more than one supply and
64 * there's no way I can see to get from a callback to the caller
65 * except container_of().
66 */
67#define WM8770_REGULATOR_EVENT(n) \
68static int wm8770_regulator_event_##n(struct notifier_block *nb, \
69 unsigned long event, void *data) \
70{ \
71 struct wm8770_priv *wm8770 = container_of(nb, struct wm8770_priv, \
72 disable_nb[n]); \
73 if (event & REGULATOR_EVENT_DISABLE) { \
74 wm8770->codec->cache_sync = 1; \
75 } \
76 return 0; \
77}
78
79WM8770_REGULATOR_EVENT(0)
80WM8770_REGULATOR_EVENT(1)
81WM8770_REGULATOR_EVENT(2)
82
83static const DECLARE_TLV_DB_SCALE(adc_tlv, -1200, 100, 0);
84static const DECLARE_TLV_DB_SCALE(dac_dig_tlv, -12750, 50, 1);
85static const DECLARE_TLV_DB_SCALE(dac_alg_tlv, -12700, 100, 1);
86
87static const char *dac_phase_text[][2] = {
88 { "DAC1 Normal", "DAC1 Inverted" },
89 { "DAC2 Normal", "DAC2 Inverted" },
90 { "DAC3 Normal", "DAC3 Inverted" },
91 { "DAC4 Normal", "DAC4 Inverted" },
92};
93
94static const struct soc_enum dac_phase[] = {
95 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 0, 1, 2, dac_phase_text[0]),
96 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 2, 3, 2, dac_phase_text[1]),
97 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 4, 5, 2, dac_phase_text[2]),
98 SOC_ENUM_DOUBLE(WM8770_DACPHASE, 6, 7, 2, dac_phase_text[3]),
99};
100
101static const struct snd_kcontrol_new wm8770_snd_controls[] = {
102 /* global DAC playback controls */
103 SOC_SINGLE_TLV("DAC Playback Volume", WM8770_MSDIGVOL, 0, 255, 0,
104 dac_dig_tlv),
105 SOC_SINGLE("DAC Playback Switch", WM8770_DACMUTE, 4, 1, 1),
106 SOC_SINGLE("DAC Playback ZC Switch", WM8770_DACCTRL1, 0, 1, 0),
107
108 /* global VOUT playback controls */
109 SOC_SINGLE_TLV("VOUT Playback Volume", WM8770_MSALGVOL, 0, 127, 0,
110 dac_alg_tlv),
111 SOC_SINGLE("VOUT Playback ZC Switch", WM8770_MSALGVOL, 7, 1, 0),
112
113 /* VOUT1/2/3/4 specific controls */
114 SOC_DOUBLE_R_TLV("VOUT1 Playback Volume", WM8770_VOUT1LVOL,
115 WM8770_VOUT1RVOL, 0, 127, 0, dac_alg_tlv),
116 SOC_DOUBLE_R("VOUT1 Playback ZC Switch", WM8770_VOUT1LVOL,
117 WM8770_VOUT1RVOL, 7, 1, 0),
118 SOC_DOUBLE_R_TLV("VOUT2 Playback Volume", WM8770_VOUT2LVOL,
119 WM8770_VOUT2RVOL, 0, 127, 0, dac_alg_tlv),
120 SOC_DOUBLE_R("VOUT2 Playback ZC Switch", WM8770_VOUT2LVOL,
121 WM8770_VOUT2RVOL, 7, 1, 0),
122 SOC_DOUBLE_R_TLV("VOUT3 Playback Volume", WM8770_VOUT3LVOL,
123 WM8770_VOUT3RVOL, 0, 127, 0, dac_alg_tlv),
124 SOC_DOUBLE_R("VOUT3 Playback ZC Switch", WM8770_VOUT3LVOL,
125 WM8770_VOUT3RVOL, 7, 1, 0),
126 SOC_DOUBLE_R_TLV("VOUT4 Playback Volume", WM8770_VOUT4LVOL,
127 WM8770_VOUT4RVOL, 0, 127, 0, dac_alg_tlv),
128 SOC_DOUBLE_R("VOUT4 Playback ZC Switch", WM8770_VOUT4LVOL,
129 WM8770_VOUT4RVOL, 7, 1, 0),
130
131 /* DAC1/2/3/4 specific controls */
132 SOC_DOUBLE_R_TLV("DAC1 Playback Volume", WM8770_DAC1LVOL,
133 WM8770_DAC1RVOL, 0, 255, 0, dac_dig_tlv),
134 SOC_SINGLE("DAC1 Deemphasis Switch", WM8770_DACCTRL2, 0, 1, 0),
135 SOC_ENUM("DAC1 Phase", dac_phase[0]),
136 SOC_DOUBLE_R_TLV("DAC2 Playback Volume", WM8770_DAC2LVOL,
137 WM8770_DAC2RVOL, 0, 255, 0, dac_dig_tlv),
138 SOC_SINGLE("DAC2 Deemphasis Switch", WM8770_DACCTRL2, 1, 1, 0),
139 SOC_ENUM("DAC2 Phase", dac_phase[1]),
140 SOC_DOUBLE_R_TLV("DAC3 Playback Volume", WM8770_DAC3LVOL,
141 WM8770_DAC3RVOL, 0, 255, 0, dac_dig_tlv),
142 SOC_SINGLE("DAC3 Deemphasis Switch", WM8770_DACCTRL2, 2, 1, 0),
143 SOC_ENUM("DAC3 Phase", dac_phase[2]),
144 SOC_DOUBLE_R_TLV("DAC4 Playback Volume", WM8770_DAC4LVOL,
145 WM8770_DAC4RVOL, 0, 255, 0, dac_dig_tlv),
146 SOC_SINGLE("DAC4 Deemphasis Switch", WM8770_DACCTRL2, 3, 1, 0),
147 SOC_ENUM("DAC4 Phase", dac_phase[3]),
148
149 /* ADC specific controls */
150 SOC_DOUBLE_R_TLV("Capture Volume", WM8770_ADCLCTRL, WM8770_ADCRCTRL,
151 0, 31, 0, adc_tlv),
152 SOC_DOUBLE_R("Capture Switch", WM8770_ADCLCTRL, WM8770_ADCRCTRL,
153 5, 1, 1),
154
155 /* other controls */
156 SOC_SINGLE("ADC 128x Oversampling Switch", WM8770_MSTRCTRL, 3, 1, 0),
157 SOC_SINGLE("ADC Highpass Filter Switch", WM8770_IFACECTRL, 8, 1, 1)
158};
159
160static const char *ain_text[] = {
161 "AIN1", "AIN2", "AIN3", "AIN4",
162 "AIN5", "AIN6", "AIN7", "AIN8"
163};
164
165static const struct soc_enum ain_enum =
166 SOC_ENUM_DOUBLE(WM8770_ADCMUX, 0, 4, 8, ain_text);
167
168static const struct snd_kcontrol_new ain_mux =
169 SOC_DAPM_ENUM("Capture Mux", ain_enum);
170
171static const struct snd_kcontrol_new vout1_mix_controls[] = {
172 SOC_DAPM_SINGLE("DAC1 Switch", WM8770_OUTMUX1, 0, 1, 0),
173 SOC_DAPM_SINGLE("AUX1 Switch", WM8770_OUTMUX1, 1, 1, 0),
174 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 2, 1, 0)
175};
176
177static const struct snd_kcontrol_new vout2_mix_controls[] = {
178 SOC_DAPM_SINGLE("DAC2 Switch", WM8770_OUTMUX1, 3, 1, 0),
179 SOC_DAPM_SINGLE("AUX2 Switch", WM8770_OUTMUX1, 4, 1, 0),
180 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX1, 5, 1, 0)
181};
182
183static const struct snd_kcontrol_new vout3_mix_controls[] = {
184 SOC_DAPM_SINGLE("DAC3 Switch", WM8770_OUTMUX2, 0, 1, 0),
185 SOC_DAPM_SINGLE("AUX3 Switch", WM8770_OUTMUX2, 1, 1, 0),
186 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 2, 1, 0)
187};
188
189static const struct snd_kcontrol_new vout4_mix_controls[] = {
190 SOC_DAPM_SINGLE("DAC4 Switch", WM8770_OUTMUX2, 3, 1, 0),
191 SOC_DAPM_SINGLE("Bypass Switch", WM8770_OUTMUX2, 4, 1, 0)
192};
193
194static const struct snd_soc_dapm_widget wm8770_dapm_widgets[] = {
195 SND_SOC_DAPM_INPUT("AUX1"),
196 SND_SOC_DAPM_INPUT("AUX2"),
197 SND_SOC_DAPM_INPUT("AUX3"),
198
199 SND_SOC_DAPM_INPUT("AIN1"),
200 SND_SOC_DAPM_INPUT("AIN2"),
201 SND_SOC_DAPM_INPUT("AIN3"),
202 SND_SOC_DAPM_INPUT("AIN4"),
203 SND_SOC_DAPM_INPUT("AIN5"),
204 SND_SOC_DAPM_INPUT("AIN6"),
205 SND_SOC_DAPM_INPUT("AIN7"),
206 SND_SOC_DAPM_INPUT("AIN8"),
207
208 SND_SOC_DAPM_MUX("Capture Mux", WM8770_ADCMUX, 8, 1, &ain_mux),
209
210 SND_SOC_DAPM_ADC("ADC", "Capture", WM8770_PWDNCTRL, 1, 1),
211
212 SND_SOC_DAPM_DAC("DAC1", "Playback", WM8770_PWDNCTRL, 2, 1),
213 SND_SOC_DAPM_DAC("DAC2", "Playback", WM8770_PWDNCTRL, 3, 1),
214 SND_SOC_DAPM_DAC("DAC3", "Playback", WM8770_PWDNCTRL, 4, 1),
215 SND_SOC_DAPM_DAC("DAC4", "Playback", WM8770_PWDNCTRL, 5, 1),
216
217 SND_SOC_DAPM_SUPPLY("VOUT12 Supply", SND_SOC_NOPM, 0, 0,
218 vout12supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
219 SND_SOC_DAPM_SUPPLY("VOUT34 Supply", SND_SOC_NOPM, 0, 0,
220 vout34supply_event, SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMD),
221
222 SND_SOC_DAPM_MIXER("VOUT1 Mixer", SND_SOC_NOPM, 0, 0,
223 vout1_mix_controls, ARRAY_SIZE(vout1_mix_controls)),
224 SND_SOC_DAPM_MIXER("VOUT2 Mixer", SND_SOC_NOPM, 0, 0,
225 vout2_mix_controls, ARRAY_SIZE(vout2_mix_controls)),
226 SND_SOC_DAPM_MIXER("VOUT3 Mixer", SND_SOC_NOPM, 0, 0,
227 vout3_mix_controls, ARRAY_SIZE(vout3_mix_controls)),
228 SND_SOC_DAPM_MIXER("VOUT4 Mixer", SND_SOC_NOPM, 0, 0,
229 vout4_mix_controls, ARRAY_SIZE(vout4_mix_controls)),
230
231 SND_SOC_DAPM_OUTPUT("VOUT1"),
232 SND_SOC_DAPM_OUTPUT("VOUT2"),
233 SND_SOC_DAPM_OUTPUT("VOUT3"),
234 SND_SOC_DAPM_OUTPUT("VOUT4")
235};
236
237static const struct snd_soc_dapm_route wm8770_intercon[] = {
238 { "Capture Mux", "AIN1", "AIN1" },
239 { "Capture Mux", "AIN2", "AIN2" },
240 { "Capture Mux", "AIN3", "AIN3" },
241 { "Capture Mux", "AIN4", "AIN4" },
242 { "Capture Mux", "AIN5", "AIN5" },
243 { "Capture Mux", "AIN6", "AIN6" },
244 { "Capture Mux", "AIN7", "AIN7" },
245 { "Capture Mux", "AIN8", "AIN8" },
246
247 { "ADC", NULL, "Capture Mux" },
248
249 { "VOUT1 Mixer", NULL, "VOUT12 Supply" },
250 { "VOUT1 Mixer", "DAC1 Switch", "DAC1" },
251 { "VOUT1 Mixer", "AUX1 Switch", "AUX1" },
252 { "VOUT1 Mixer", "Bypass Switch", "Capture Mux" },
253
254 { "VOUT2 Mixer", NULL, "VOUT12 Supply" },
255 { "VOUT2 Mixer", "DAC2 Switch", "DAC2" },
256 { "VOUT2 Mixer", "AUX2 Switch", "AUX2" },
257 { "VOUT2 Mixer", "Bypass Switch", "Capture Mux" },
258
259 { "VOUT3 Mixer", NULL, "VOUT34 Supply" },
260 { "VOUT3 Mixer", "DAC3 Switch", "DAC3" },
261 { "VOUT3 Mixer", "AUX3 Switch", "AUX3" },
262 { "VOUT3 Mixer", "Bypass Switch", "Capture Mux" },
263
264 { "VOUT4 Mixer", NULL, "VOUT34 Supply" },
265 { "VOUT4 Mixer", "DAC4 Switch", "DAC4" },
266 { "VOUT4 Mixer", "Bypass Switch", "Capture Mux" },
267
268 { "VOUT1", NULL, "VOUT1 Mixer" },
269 { "VOUT2", NULL, "VOUT2 Mixer" },
270 { "VOUT3", NULL, "VOUT3 Mixer" },
271 { "VOUT4", NULL, "VOUT4 Mixer" }
272};
273
274static int vout12supply_event(struct snd_soc_dapm_widget *w,
275 struct snd_kcontrol *kcontrol, int event)
276{
277 struct snd_soc_codec *codec;
278
279 codec = w->codec;
280
281 switch (event) {
282 case SND_SOC_DAPM_PRE_PMU:
283 snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0);
284 break;
285 case SND_SOC_DAPM_POST_PMD:
286 snd_soc_update_bits(codec, WM8770_OUTMUX1, 0x180, 0x180);
287 break;
288 }
289
290 return 0;
291}
292
293static int vout34supply_event(struct snd_soc_dapm_widget *w,
294 struct snd_kcontrol *kcontrol, int event)
295{
296 struct snd_soc_codec *codec;
297
298 codec = w->codec;
299
300 switch (event) {
301 case SND_SOC_DAPM_PRE_PMU:
302 snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0);
303 break;
304 case SND_SOC_DAPM_POST_PMD:
305 snd_soc_update_bits(codec, WM8770_OUTMUX2, 0x180, 0x180);
306 break;
307 }
308
309 return 0;
310}
311
312static int wm8770_reset(struct snd_soc_codec *codec)
313{
314 return snd_soc_write(codec, WM8770_RESET, 0);
315}
316
317static int wm8770_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
318{
319 struct snd_soc_codec *codec;
320 int iface, master;
321
322 codec = dai->codec;
323
324 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
325 case SND_SOC_DAIFMT_CBM_CFM:
326 master = 0x100;
327 break;
328 case SND_SOC_DAIFMT_CBS_CFS:
329 master = 0;
330 break;
331 default:
332 return -EINVAL;
333 }
334
335 iface = 0;
336 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
337 case SND_SOC_DAIFMT_I2S:
338 iface |= 0x2;
339 break;
340 case SND_SOC_DAIFMT_RIGHT_J:
341 break;
342 case SND_SOC_DAIFMT_LEFT_J:
343 iface |= 0x1;
344 break;
345 default:
346 return -EINVAL;
347 }
348
349 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
350 case SND_SOC_DAIFMT_NB_NF:
351 break;
352 case SND_SOC_DAIFMT_IB_IF:
353 iface |= 0xc;
354 break;
355 case SND_SOC_DAIFMT_IB_NF:
356 iface |= 0x8;
357 break;
358 case SND_SOC_DAIFMT_NB_IF:
359 iface |= 0x4;
360 break;
361 default:
362 return -EINVAL;
363 }
364
365 snd_soc_update_bits(codec, WM8770_IFACECTRL, 0xf, iface);
366 snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x100, master);
367
368 return 0;
369}
370
371static const int mclk_ratios[] = {
372 128,
373 192,
374 256,
375 384,
376 512,
377 768
378};
379
380static int wm8770_hw_params(struct snd_pcm_substream *substream,
381 struct snd_pcm_hw_params *params,
382 struct snd_soc_dai *dai)
383{
384 struct snd_soc_codec *codec;
385 struct wm8770_priv *wm8770;
386 int i;
387 int iface;
388 int shift;
389 int ratio;
390
391 codec = dai->codec;
392 wm8770 = snd_soc_codec_get_drvdata(codec);
393
394 iface = 0;
395 switch (params_format(params)) {
396 case SNDRV_PCM_FORMAT_S16_LE:
397 break;
398 case SNDRV_PCM_FORMAT_S20_3LE:
399 iface |= 0x10;
400 break;
401 case SNDRV_PCM_FORMAT_S24_LE:
402 iface |= 0x20;
403 break;
404 case SNDRV_PCM_FORMAT_S32_LE:
405 iface |= 0x30;
406 break;
407 }
408
409 switch (substream->stream) {
410 case SNDRV_PCM_STREAM_PLAYBACK:
411 i = 0;
412 shift = 4;
413 break;
414 case SNDRV_PCM_STREAM_CAPTURE:
415 i = 2;
416 shift = 0;
417 break;
418 default:
419 return -EINVAL;
420 }
421
422 /* Only need to set MCLK/LRCLK ratio if we're master */
423 if (snd_soc_read(codec, WM8770_MSTRCTRL) & 0x100) {
424 for (; i < ARRAY_SIZE(mclk_ratios); ++i) {
425 ratio = wm8770->sysclk / params_rate(params);
426 if (ratio == mclk_ratios[i])
427 break;
428 }
429
430 if (i == ARRAY_SIZE(mclk_ratios)) {
431 dev_err(codec->dev,
432 "Unable to configure MCLK ratio %d/%d\n",
433 wm8770->sysclk, params_rate(params));
434 return -EINVAL;
435 }
436
437 dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]);
438
439 snd_soc_update_bits(codec, WM8770_MSTRCTRL, 0x7 << shift,
440 i << shift);
441 }
442
443 snd_soc_update_bits(codec, WM8770_IFACECTRL, 0x30, iface);
444
445 return 0;
446}
447
448static int wm8770_mute(struct snd_soc_dai *dai, int mute)
449{
450 struct snd_soc_codec *codec;
451
452 codec = dai->codec;
453 return snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10,
454 !!mute << 4);
455}
456
457static int wm8770_set_sysclk(struct snd_soc_dai *dai,
458 int clk_id, unsigned int freq, int dir)
459{
460 struct snd_soc_codec *codec;
461 struct wm8770_priv *wm8770;
462
463 codec = dai->codec;
464 wm8770 = snd_soc_codec_get_drvdata(codec);
465 wm8770->sysclk = freq;
466 return 0;
467}
468
469static void wm8770_sync_cache(struct snd_soc_codec *codec)
470{
471 int i;
472 u16 *cache;
473
474 if (!codec->cache_sync)
475 return;
476
477 codec->cache_only = 0;
478 cache = codec->reg_cache;
479 for (i = 0; i < codec->driver->reg_cache_size; i++) {
480 if (i == WM8770_RESET || cache[i] == wm8770_reg_defs[i])
481 continue;
482 snd_soc_write(codec, i, cache[i]);
483 }
484 codec->cache_sync = 0;
485}
486
487static int wm8770_set_bias_level(struct snd_soc_codec *codec,
488 enum snd_soc_bias_level level)
489{
490 int ret;
491 struct wm8770_priv *wm8770;
492
493 wm8770 = snd_soc_codec_get_drvdata(codec);
494
495 switch (level) {
496 case SND_SOC_BIAS_ON:
497 break;
498 case SND_SOC_BIAS_PREPARE:
499 break;
500 case SND_SOC_BIAS_STANDBY:
501 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
502 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
503 wm8770->supplies);
504 if (ret) {
505 dev_err(codec->dev,
506 "Failed to enable supplies: %d\n",
507 ret);
508 return ret;
509 }
510 wm8770_sync_cache(codec);
511 /* global powerup */
512 snd_soc_write(codec, WM8770_PWDNCTRL, 0);
513 }
514 break;
515 case SND_SOC_BIAS_OFF:
516 /* global powerdown */
517 snd_soc_write(codec, WM8770_PWDNCTRL, 1);
518 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies),
519 wm8770->supplies);
520 break;
521 }
522
523 codec->dapm.bias_level = level;
524 return 0;
525}
526
527#define WM8770_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
528 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
529
530static struct snd_soc_dai_ops wm8770_dai_ops = {
531 .digital_mute = wm8770_mute,
532 .hw_params = wm8770_hw_params,
533 .set_fmt = wm8770_set_fmt,
534 .set_sysclk = wm8770_set_sysclk,
535};
536
537static struct snd_soc_dai_driver wm8770_dai = {
538 .name = "wm8770-hifi",
539 .playback = {
540 .stream_name = "Playback",
541 .channels_min = 2,
542 .channels_max = 2,
543 .rates = SNDRV_PCM_RATE_8000_192000,
544 .formats = WM8770_FORMATS
545 },
546 .capture = {
547 .stream_name = "Capture",
548 .channels_min = 2,
549 .channels_max = 2,
550 .rates = SNDRV_PCM_RATE_8000_96000,
551 .formats = WM8770_FORMATS
552 },
553 .ops = &wm8770_dai_ops,
554 .symmetric_rates = 1
555};
556
557#ifdef CONFIG_PM
558static int wm8770_suspend(struct snd_soc_codec *codec, pm_message_t state)
559{
560 wm8770_set_bias_level(codec, SND_SOC_BIAS_OFF);
561 return 0;
562}
563
564static int wm8770_resume(struct snd_soc_codec *codec)
565{
566 wm8770_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
567 return 0;
568}
569#else
570#define wm8770_suspend NULL
571#define wm8770_resume NULL
572#endif
573
574static int wm8770_probe(struct snd_soc_codec *codec)
575{
576 struct wm8770_priv *wm8770;
577 int ret;
578 int i;
579
580 wm8770 = snd_soc_codec_get_drvdata(codec);
581 wm8770->codec = codec;
582
583 codec->dapm.idle_bias_off = 1;
584
585 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8770->control_type);
586 if (ret < 0) {
587 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
588 return ret;
589 }
590
591 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++)
592 wm8770->supplies[i].supply = wm8770_supply_names[i];
593
594 ret = regulator_bulk_get(codec->dev, ARRAY_SIZE(wm8770->supplies),
595 wm8770->supplies);
596 if (ret) {
597 dev_err(codec->dev, "Failed to request supplies: %d\n", ret);
598 return ret;
599 }
600
601 wm8770->disable_nb[0].notifier_call = wm8770_regulator_event_0;
602 wm8770->disable_nb[1].notifier_call = wm8770_regulator_event_1;
603 wm8770->disable_nb[2].notifier_call = wm8770_regulator_event_2;
604
605 /* This should really be moved into the regulator core */
606 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); i++) {
607 ret = regulator_register_notifier(wm8770->supplies[i].consumer,
608 &wm8770->disable_nb[i]);
609 if (ret) {
610 dev_err(codec->dev,
611 "Failed to register regulator notifier: %d\n",
612 ret);
613 }
614 }
615
616 ret = regulator_bulk_enable(ARRAY_SIZE(wm8770->supplies),
617 wm8770->supplies);
618 if (ret) {
619 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
620 goto err_reg_get;
621 }
622
623 ret = wm8770_reset(codec);
624 if (ret < 0) {
625 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
626 goto err_reg_enable;
627 }
628
629 wm8770_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
630
631 /* latch the volume update bits */
632 snd_soc_update_bits(codec, WM8770_MSDIGVOL, 0x100, 0x100);
633 snd_soc_update_bits(codec, WM8770_MSALGVOL, 0x100, 0x100);
634 snd_soc_update_bits(codec, WM8770_VOUT1RVOL, 0x100, 0x100);
635 snd_soc_update_bits(codec, WM8770_VOUT2RVOL, 0x100, 0x100);
636 snd_soc_update_bits(codec, WM8770_VOUT3RVOL, 0x100, 0x100);
637 snd_soc_update_bits(codec, WM8770_VOUT4RVOL, 0x100, 0x100);
638 snd_soc_update_bits(codec, WM8770_DAC1RVOL, 0x100, 0x100);
639 snd_soc_update_bits(codec, WM8770_DAC2RVOL, 0x100, 0x100);
640 snd_soc_update_bits(codec, WM8770_DAC3RVOL, 0x100, 0x100);
641 snd_soc_update_bits(codec, WM8770_DAC4RVOL, 0x100, 0x100);
642
643 /* mute all DACs */
644 snd_soc_update_bits(codec, WM8770_DACMUTE, 0x10, 0x10);
645
646 snd_soc_add_controls(codec, wm8770_snd_controls,
647 ARRAY_SIZE(wm8770_snd_controls));
648 snd_soc_dapm_new_controls(&codec->dapm, wm8770_dapm_widgets,
649 ARRAY_SIZE(wm8770_dapm_widgets));
650 snd_soc_dapm_add_routes(&codec->dapm, wm8770_intercon,
651 ARRAY_SIZE(wm8770_intercon));
652 return 0;
653
654err_reg_enable:
655 regulator_bulk_disable(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
656err_reg_get:
657 regulator_bulk_free(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
658 return ret;
659}
660
661static int wm8770_remove(struct snd_soc_codec *codec)
662{
663 struct wm8770_priv *wm8770;
664 int i;
665
666 wm8770 = snd_soc_codec_get_drvdata(codec);
667 wm8770_set_bias_level(codec, SND_SOC_BIAS_OFF);
668
669 for (i = 0; i < ARRAY_SIZE(wm8770->supplies); ++i)
670 regulator_unregister_notifier(wm8770->supplies[i].consumer,
671 &wm8770->disable_nb[i]);
672 regulator_bulk_free(ARRAY_SIZE(wm8770->supplies), wm8770->supplies);
673 return 0;
674}
675
676static struct snd_soc_codec_driver soc_codec_dev_wm8770 = {
677 .probe = wm8770_probe,
678 .remove = wm8770_remove,
679 .suspend = wm8770_suspend,
680 .resume = wm8770_resume,
681 .set_bias_level = wm8770_set_bias_level,
682 .reg_cache_size = ARRAY_SIZE(wm8770_reg_defs),
683 .reg_word_size = sizeof (u16),
684 .reg_cache_default = wm8770_reg_defs
685};
686
687#if defined(CONFIG_SPI_MASTER)
688static int __devinit wm8770_spi_probe(struct spi_device *spi)
689{
690 struct wm8770_priv *wm8770;
691 int ret;
692
693 wm8770 = kzalloc(sizeof(struct wm8770_priv), GFP_KERNEL);
694 if (!wm8770)
695 return -ENOMEM;
696
697 wm8770->control_type = SND_SOC_SPI;
698 spi_set_drvdata(spi, wm8770);
699
700 ret = snd_soc_register_codec(&spi->dev,
701 &soc_codec_dev_wm8770, &wm8770_dai, 1);
702 if (ret < 0)
703 kfree(wm8770);
704 return ret;
705}
706
707static int __devexit wm8770_spi_remove(struct spi_device *spi)
708{
709 snd_soc_unregister_codec(&spi->dev);
710 kfree(spi_get_drvdata(spi));
711 return 0;
712}
713
714static struct spi_driver wm8770_spi_driver = {
715 .driver = {
716 .name = "wm8770",
717 .owner = THIS_MODULE,
718 },
719 .probe = wm8770_spi_probe,
720 .remove = __devexit_p(wm8770_spi_remove)
721};
722#endif
723
724static int __init wm8770_modinit(void)
725{
726 int ret = 0;
727
728#if defined(CONFIG_SPI_MASTER)
729 ret = spi_register_driver(&wm8770_spi_driver);
730 if (ret) {
731 printk(KERN_ERR "Failed to register wm8770 SPI driver: %d\n",
732 ret);
733 }
734#endif
735 return ret;
736}
737module_init(wm8770_modinit);
738
739static void __exit wm8770_exit(void)
740{
741#if defined(CONFIG_SPI_MASTER)
742 spi_unregister_driver(&wm8770_spi_driver);
743#endif
744}
745module_exit(wm8770_exit);
746
747MODULE_DESCRIPTION("ASoC WM8770 driver");
748MODULE_AUTHOR("Dimitris Papastamos <dp@opensource.wolfsonmicro.com>");
749MODULE_LICENSE("GPL");