tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * wm8737.c -- WM8737 ALSA SoC Audio driver
3 *
4 * Copyright 2010 Wolfson Microelectronics plc
5 *
6 * Author: Mark Brown <broonie@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/i2c.h>
19#include <linux/regmap.h>
20#include <linux/regulator/consumer.h>
21#include <linux/spi/spi.h>
22#include <linux/slab.h>
23#include <linux/of_device.h>
24#include <sound/core.h>
25#include <sound/pcm.h>
26#include <sound/pcm_params.h>
27#include <sound/soc.h>
28#include <sound/soc-dapm.h>
29#include <sound/initval.h>
30#include <sound/tlv.h>
31
32#include "wm8737.h"
33
34#define WM8737_NUM_SUPPLIES 4
35static const char *wm8737_supply_names[WM8737_NUM_SUPPLIES] = {
36 "DCVDD",
37 "DBVDD",
38 "AVDD",
39 "MVDD",
40};
41
42/* codec private data */
43struct wm8737_priv {
44 struct regmap *regmap;
45 struct regulator_bulk_data supplies[WM8737_NUM_SUPPLIES];
46 unsigned int mclk;
47};
48
49static const struct reg_default wm8737_reg_defaults[] = {
50 { 0, 0x00C3 }, /* R0 - Left PGA volume */
51 { 1, 0x00C3 }, /* R1 - Right PGA volume */
52 { 2, 0x0007 }, /* R2 - AUDIO path L */
53 { 3, 0x0007 }, /* R3 - AUDIO path R */
54 { 4, 0x0000 }, /* R4 - 3D Enhance */
55 { 5, 0x0000 }, /* R5 - ADC Control */
56 { 6, 0x0000 }, /* R6 - Power Management */
57 { 7, 0x000A }, /* R7 - Audio Format */
58 { 8, 0x0000 }, /* R8 - Clocking */
59 { 9, 0x000F }, /* R9 - MIC Preamp Control */
60 { 10, 0x0003 }, /* R10 - Misc Bias Control */
61 { 11, 0x0000 }, /* R11 - Noise Gate */
62 { 12, 0x007C }, /* R12 - ALC1 */
63 { 13, 0x0000 }, /* R13 - ALC2 */
64 { 14, 0x0032 }, /* R14 - ALC3 */
65};
66
67static bool wm8737_volatile(struct device *dev, unsigned int reg)
68{
69 switch (reg) {
70 case WM8737_RESET:
71 return true;
72 default:
73 return false;
74 }
75}
76
77static int wm8737_reset(struct snd_soc_codec *codec)
78{
79 return snd_soc_write(codec, WM8737_RESET, 0);
80}
81
82static const unsigned int micboost_tlv[] = {
83 TLV_DB_RANGE_HEAD(4),
84 0, 0, TLV_DB_SCALE_ITEM(1300, 0, 0),
85 1, 1, TLV_DB_SCALE_ITEM(1800, 0, 0),
86 2, 2, TLV_DB_SCALE_ITEM(2800, 0, 0),
87 3, 3, TLV_DB_SCALE_ITEM(3300, 0, 0),
88};
89static const DECLARE_TLV_DB_SCALE(pga_tlv, -9750, 50, 1);
90static const DECLARE_TLV_DB_SCALE(adc_tlv, -600, 600, 0);
91static const DECLARE_TLV_DB_SCALE(ng_tlv, -7800, 600, 0);
92static const DECLARE_TLV_DB_SCALE(alc_max_tlv, -1200, 600, 0);
93static const DECLARE_TLV_DB_SCALE(alc_target_tlv, -1800, 100, 0);
94
95static const char *micbias_enum_text[] = {
96 "25%",
97 "50%",
98 "75%",
99 "100%",
100};
101
102static const struct soc_enum micbias_enum =
103 SOC_ENUM_SINGLE(WM8737_MIC_PREAMP_CONTROL, 0, 4, micbias_enum_text);
104
105static const char *low_cutoff_text[] = {
106 "Low", "High"
107};
108
109static const struct soc_enum low_3d =
110 SOC_ENUM_SINGLE(WM8737_3D_ENHANCE, 6, 2, low_cutoff_text);
111
112static const char *high_cutoff_text[] = {
113 "High", "Low"
114};
115
116static const struct soc_enum high_3d =
117 SOC_ENUM_SINGLE(WM8737_3D_ENHANCE, 5, 2, high_cutoff_text);
118
119static const char *alc_fn_text[] = {
120 "Disabled", "Right", "Left", "Stereo"
121};
122
123static const struct soc_enum alc_fn =
124 SOC_ENUM_SINGLE(WM8737_ALC1, 7, 4, alc_fn_text);
125
126static const char *alc_hold_text[] = {
127 "0", "2.67ms", "5.33ms", "10.66ms", "21.32ms", "42.64ms", "85.28ms",
128 "170.56ms", "341.12ms", "682.24ms", "1.364s", "2.728s", "5.458s",
129 "10.916s", "21.832s", "43.691s"
130};
131
132static const struct soc_enum alc_hold =
133 SOC_ENUM_SINGLE(WM8737_ALC2, 0, 16, alc_hold_text);
134
135static const char *alc_atk_text[] = {
136 "8.4ms", "16.8ms", "33.6ms", "67.2ms", "134.4ms", "268.8ms", "537.6ms",
137 "1.075s", "2.15s", "4.3s", "8.6s"
138};
139
140static const struct soc_enum alc_atk =
141 SOC_ENUM_SINGLE(WM8737_ALC3, 0, 11, alc_atk_text);
142
143static const char *alc_dcy_text[] = {
144 "33.6ms", "67.2ms", "134.4ms", "268.8ms", "537.6ms", "1.075s", "2.15s",
145 "4.3s", "8.6s", "17.2s", "34.41s"
146};
147
148static const struct soc_enum alc_dcy =
149 SOC_ENUM_SINGLE(WM8737_ALC3, 4, 11, alc_dcy_text);
150
151static const struct snd_kcontrol_new wm8737_snd_controls[] = {
152SOC_DOUBLE_R_TLV("Mic Boost Volume", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R,
153 6, 3, 0, micboost_tlv),
154SOC_DOUBLE_R("Mic Boost Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R,
155 4, 1, 0),
156SOC_DOUBLE("Mic ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R,
157 3, 1, 0),
158
159SOC_DOUBLE_R_TLV("Capture Volume", WM8737_LEFT_PGA_VOLUME,
160 WM8737_RIGHT_PGA_VOLUME, 0, 255, 0, pga_tlv),
161SOC_DOUBLE("Capture ZC Switch", WM8737_AUDIO_PATH_L, WM8737_AUDIO_PATH_R,
162 2, 1, 0),
163
164SOC_DOUBLE("INPUT1 DC Bias Switch", WM8737_MISC_BIAS_CONTROL, 0, 1, 1, 0),
165
166SOC_ENUM("Mic PGA Bias", micbias_enum),
167SOC_SINGLE("ADC Low Power Switch", WM8737_ADC_CONTROL, 2, 1, 0),
168SOC_SINGLE("High Pass Filter Switch", WM8737_ADC_CONTROL, 0, 1, 1),
169SOC_DOUBLE("Polarity Invert Switch", WM8737_ADC_CONTROL, 5, 6, 1, 0),
170
171SOC_SINGLE("3D Switch", WM8737_3D_ENHANCE, 0, 1, 0),
172SOC_SINGLE("3D Depth", WM8737_3D_ENHANCE, 1, 15, 0),
173SOC_ENUM("3D Low Cut-off", low_3d),
174SOC_ENUM("3D High Cut-off", low_3d),
175SOC_SINGLE_TLV("3D ADC Volume", WM8737_3D_ENHANCE, 7, 1, 1, adc_tlv),
176
177SOC_SINGLE("Noise Gate Switch", WM8737_NOISE_GATE, 0, 1, 0),
178SOC_SINGLE_TLV("Noise Gate Threshold Volume", WM8737_NOISE_GATE, 2, 7, 0,
179 ng_tlv),
180
181SOC_ENUM("ALC", alc_fn),
182SOC_SINGLE_TLV("ALC Max Gain Volume", WM8737_ALC1, 4, 7, 0, alc_max_tlv),
183SOC_SINGLE_TLV("ALC Target Volume", WM8737_ALC1, 0, 15, 0, alc_target_tlv),
184SOC_ENUM("ALC Hold Time", alc_hold),
185SOC_SINGLE("ALC ZC Switch", WM8737_ALC2, 4, 1, 0),
186SOC_ENUM("ALC Attack Time", alc_atk),
187SOC_ENUM("ALC Decay Time", alc_dcy),
188};
189
190static const char *linsel_text[] = {
191 "LINPUT1", "LINPUT2", "LINPUT3", "LINPUT1 DC",
192};
193
194static const struct soc_enum linsel_enum =
195 SOC_ENUM_SINGLE(WM8737_AUDIO_PATH_L, 7, 4, linsel_text);
196
197static const struct snd_kcontrol_new linsel_mux =
198 SOC_DAPM_ENUM("LINSEL", linsel_enum);
199
200
201static const char *rinsel_text[] = {
202 "RINPUT1", "RINPUT2", "RINPUT3", "RINPUT1 DC",
203};
204
205static const struct soc_enum rinsel_enum =
206 SOC_ENUM_SINGLE(WM8737_AUDIO_PATH_R, 7, 4, rinsel_text);
207
208static const struct snd_kcontrol_new rinsel_mux =
209 SOC_DAPM_ENUM("RINSEL", rinsel_enum);
210
211static const char *bypass_text[] = {
212 "Direct", "Preamp"
213};
214
215static const struct soc_enum lbypass_enum =
216 SOC_ENUM_SINGLE(WM8737_MIC_PREAMP_CONTROL, 2, 2, bypass_text);
217
218static const struct snd_kcontrol_new lbypass_mux =
219 SOC_DAPM_ENUM("Left Bypass", lbypass_enum);
220
221
222static const struct soc_enum rbypass_enum =
223 SOC_ENUM_SINGLE(WM8737_MIC_PREAMP_CONTROL, 3, 2, bypass_text);
224
225static const struct snd_kcontrol_new rbypass_mux =
226 SOC_DAPM_ENUM("Left Bypass", rbypass_enum);
227
228static const struct snd_soc_dapm_widget wm8737_dapm_widgets[] = {
229SND_SOC_DAPM_INPUT("LINPUT1"),
230SND_SOC_DAPM_INPUT("LINPUT2"),
231SND_SOC_DAPM_INPUT("LINPUT3"),
232SND_SOC_DAPM_INPUT("RINPUT1"),
233SND_SOC_DAPM_INPUT("RINPUT2"),
234SND_SOC_DAPM_INPUT("RINPUT3"),
235SND_SOC_DAPM_INPUT("LACIN"),
236SND_SOC_DAPM_INPUT("RACIN"),
237
238SND_SOC_DAPM_MUX("LINSEL", SND_SOC_NOPM, 0, 0, &linsel_mux),
239SND_SOC_DAPM_MUX("RINSEL", SND_SOC_NOPM, 0, 0, &rinsel_mux),
240
241SND_SOC_DAPM_MUX("Left Preamp Mux", SND_SOC_NOPM, 0, 0, &lbypass_mux),
242SND_SOC_DAPM_MUX("Right Preamp Mux", SND_SOC_NOPM, 0, 0, &rbypass_mux),
243
244SND_SOC_DAPM_PGA("PGAL", WM8737_POWER_MANAGEMENT, 5, 0, NULL, 0),
245SND_SOC_DAPM_PGA("PGAR", WM8737_POWER_MANAGEMENT, 4, 0, NULL, 0),
246
247SND_SOC_DAPM_DAC("ADCL", NULL, WM8737_POWER_MANAGEMENT, 3, 0),
248SND_SOC_DAPM_DAC("ADCR", NULL, WM8737_POWER_MANAGEMENT, 2, 0),
249
250SND_SOC_DAPM_AIF_OUT("AIF", "Capture", 0, WM8737_POWER_MANAGEMENT, 6, 0),
251};
252
253static const struct snd_soc_dapm_route intercon[] = {
254 { "LINSEL", "LINPUT1", "LINPUT1" },
255 { "LINSEL", "LINPUT2", "LINPUT2" },
256 { "LINSEL", "LINPUT3", "LINPUT3" },
257 { "LINSEL", "LINPUT1 DC", "LINPUT1" },
258
259 { "RINSEL", "RINPUT1", "RINPUT1" },
260 { "RINSEL", "RINPUT2", "RINPUT2" },
261 { "RINSEL", "RINPUT3", "RINPUT3" },
262 { "RINSEL", "RINPUT1 DC", "RINPUT1" },
263
264 { "Left Preamp Mux", "Preamp", "LINSEL" },
265 { "Left Preamp Mux", "Direct", "LACIN" },
266
267 { "Right Preamp Mux", "Preamp", "RINSEL" },
268 { "Right Preamp Mux", "Direct", "RACIN" },
269
270 { "PGAL", NULL, "Left Preamp Mux" },
271 { "PGAR", NULL, "Right Preamp Mux" },
272
273 { "ADCL", NULL, "PGAL" },
274 { "ADCR", NULL, "PGAR" },
275
276 { "AIF", NULL, "ADCL" },
277 { "AIF", NULL, "ADCR" },
278};
279
280static int wm8737_add_widgets(struct snd_soc_codec *codec)
281{
282 struct snd_soc_dapm_context *dapm = &codec->dapm;
283
284 snd_soc_dapm_new_controls(dapm, wm8737_dapm_widgets,
285 ARRAY_SIZE(wm8737_dapm_widgets));
286 snd_soc_dapm_add_routes(dapm, intercon, ARRAY_SIZE(intercon));
287
288 return 0;
289}
290
291/* codec mclk clock divider coefficients */
292static const struct {
293 u32 mclk;
294 u32 rate;
295 u8 usb;
296 u8 sr;
297} coeff_div[] = {
298 { 12288000, 8000, 0, 0x4 },
299 { 12288000, 12000, 0, 0x8 },
300 { 12288000, 16000, 0, 0xa },
301 { 12288000, 24000, 0, 0x1c },
302 { 12288000, 32000, 0, 0xc },
303 { 12288000, 48000, 0, 0 },
304 { 12288000, 96000, 0, 0xe },
305
306 { 11289600, 8000, 0, 0x14 },
307 { 11289600, 11025, 0, 0x18 },
308 { 11289600, 22050, 0, 0x1a },
309 { 11289600, 44100, 0, 0x10 },
310 { 11289600, 88200, 0, 0x1e },
311
312 { 18432000, 8000, 0, 0x5 },
313 { 18432000, 12000, 0, 0x9 },
314 { 18432000, 16000, 0, 0xb },
315 { 18432000, 24000, 0, 0x1b },
316 { 18432000, 32000, 0, 0xd },
317 { 18432000, 48000, 0, 0x1 },
318 { 18432000, 96000, 0, 0x1f },
319
320 { 16934400, 8000, 0, 0x15 },
321 { 16934400, 11025, 0, 0x19 },
322 { 16934400, 22050, 0, 0x1b },
323 { 16934400, 44100, 0, 0x11 },
324 { 16934400, 88200, 0, 0x1f },
325
326 { 12000000, 8000, 1, 0x4 },
327 { 12000000, 11025, 1, 0x19 },
328 { 12000000, 12000, 1, 0x8 },
329 { 12000000, 16000, 1, 0xa },
330 { 12000000, 22050, 1, 0x1b },
331 { 12000000, 24000, 1, 0x1c },
332 { 12000000, 32000, 1, 0xc },
333 { 12000000, 44100, 1, 0x11 },
334 { 12000000, 48000, 1, 0x0 },
335 { 12000000, 88200, 1, 0x1f },
336 { 12000000, 96000, 1, 0xe },
337};
338
339static int wm8737_hw_params(struct snd_pcm_substream *substream,
340 struct snd_pcm_hw_params *params,
341 struct snd_soc_dai *dai)
342{
343 struct snd_soc_codec *codec = dai->codec;
344 struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec);
345 int i;
346 u16 clocking = 0;
347 u16 af = 0;
348
349 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
350 if (coeff_div[i].rate != params_rate(params))
351 continue;
352
353 if (coeff_div[i].mclk == wm8737->mclk)
354 break;
355
356 if (coeff_div[i].mclk == wm8737->mclk * 2) {
357 clocking |= WM8737_CLKDIV2;
358 break;
359 }
360 }
361
362 if (i == ARRAY_SIZE(coeff_div)) {
363 dev_err(codec->dev, "%dHz MCLK can't support %dHz\n",
364 wm8737->mclk, params_rate(params));
365 return -EINVAL;
366 }
367
368 clocking |= coeff_div[i].usb | (coeff_div[i].sr << WM8737_SR_SHIFT);
369
370 switch (params_format(params)) {
371 case SNDRV_PCM_FORMAT_S16_LE:
372 break;
373 case SNDRV_PCM_FORMAT_S20_3LE:
374 af |= 0x8;
375 break;
376 case SNDRV_PCM_FORMAT_S24_LE:
377 af |= 0x10;
378 break;
379 case SNDRV_PCM_FORMAT_S32_LE:
380 af |= 0x18;
381 break;
382 default:
383 return -EINVAL;
384 }
385
386 snd_soc_update_bits(codec, WM8737_AUDIO_FORMAT, WM8737_WL_MASK, af);
387 snd_soc_update_bits(codec, WM8737_CLOCKING,
388 WM8737_USB_MODE | WM8737_CLKDIV2 | WM8737_SR_MASK,
389 clocking);
390
391 return 0;
392}
393
394static int wm8737_set_dai_sysclk(struct snd_soc_dai *codec_dai,
395 int clk_id, unsigned int freq, int dir)
396{
397 struct snd_soc_codec *codec = codec_dai->codec;
398 struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec);
399 int i;
400
401 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
402 if (freq == coeff_div[i].mclk ||
403 freq == coeff_div[i].mclk * 2) {
404 wm8737->mclk = freq;
405 return 0;
406 }
407 }
408
409 dev_err(codec->dev, "MCLK rate %dHz not supported\n", freq);
410
411 return -EINVAL;
412}
413
414
415static int wm8737_set_dai_fmt(struct snd_soc_dai *codec_dai,
416 unsigned int fmt)
417{
418 struct snd_soc_codec *codec = codec_dai->codec;
419 u16 af = 0;
420
421 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
422 case SND_SOC_DAIFMT_CBM_CFM:
423 af |= WM8737_MS;
424 break;
425 case SND_SOC_DAIFMT_CBS_CFS:
426 break;
427 default:
428 return -EINVAL;
429 }
430
431 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
432 case SND_SOC_DAIFMT_I2S:
433 af |= 0x2;
434 break;
435 case SND_SOC_DAIFMT_RIGHT_J:
436 break;
437 case SND_SOC_DAIFMT_LEFT_J:
438 af |= 0x1;
439 break;
440 case SND_SOC_DAIFMT_DSP_A:
441 af |= 0x3;
442 break;
443 case SND_SOC_DAIFMT_DSP_B:
444 af |= 0x13;
445 break;
446 default:
447 return -EINVAL;
448 }
449
450 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
451 case SND_SOC_DAIFMT_NB_NF:
452 break;
453 case SND_SOC_DAIFMT_NB_IF:
454 af |= WM8737_LRP;
455 break;
456 default:
457 return -EINVAL;
458 }
459
460 snd_soc_update_bits(codec, WM8737_AUDIO_FORMAT,
461 WM8737_FORMAT_MASK | WM8737_LRP | WM8737_MS, af);
462
463 return 0;
464}
465
466static int wm8737_set_bias_level(struct snd_soc_codec *codec,
467 enum snd_soc_bias_level level)
468{
469 struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec);
470 int ret;
471
472 switch (level) {
473 case SND_SOC_BIAS_ON:
474 break;
475
476 case SND_SOC_BIAS_PREPARE:
477 /* VMID at 2*75k */
478 snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL,
479 WM8737_VMIDSEL_MASK, 0);
480 break;
481
482 case SND_SOC_BIAS_STANDBY:
483 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
484 ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies),
485 wm8737->supplies);
486 if (ret != 0) {
487 dev_err(codec->dev,
488 "Failed to enable supplies: %d\n",
489 ret);
490 return ret;
491 }
492
493 regcache_sync(wm8737->regmap);
494
495 /* Fast VMID ramp at 2*2.5k */
496 snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL,
497 WM8737_VMIDSEL_MASK, 0x4);
498
499 /* Bring VMID up */
500 snd_soc_update_bits(codec, WM8737_POWER_MANAGEMENT,
501 WM8737_VMID_MASK |
502 WM8737_VREF_MASK,
503 WM8737_VMID_MASK |
504 WM8737_VREF_MASK);
505
506 msleep(500);
507 }
508
509 /* VMID at 2*300k */
510 snd_soc_update_bits(codec, WM8737_MISC_BIAS_CONTROL,
511 WM8737_VMIDSEL_MASK, 2);
512
513 break;
514
515 case SND_SOC_BIAS_OFF:
516 snd_soc_update_bits(codec, WM8737_POWER_MANAGEMENT,
517 WM8737_VMID_MASK | WM8737_VREF_MASK, 0);
518
519 regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies),
520 wm8737->supplies);
521 break;
522 }
523
524 codec->dapm.bias_level = level;
525 return 0;
526}
527
528#define WM8737_RATES SNDRV_PCM_RATE_8000_96000
529
530#define WM8737_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
531 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
532
533static const struct snd_soc_dai_ops wm8737_dai_ops = {
534 .hw_params = wm8737_hw_params,
535 .set_sysclk = wm8737_set_dai_sysclk,
536 .set_fmt = wm8737_set_dai_fmt,
537};
538
539static struct snd_soc_dai_driver wm8737_dai = {
540 .name = "wm8737",
541 .capture = {
542 .stream_name = "Capture",
543 .channels_min = 2, /* Mono modes not yet supported */
544 .channels_max = 2,
545 .rates = WM8737_RATES,
546 .formats = WM8737_FORMATS,
547 },
548 .ops = &wm8737_dai_ops,
549};
550
551#ifdef CONFIG_PM
552static int wm8737_suspend(struct snd_soc_codec *codec)
553{
554 wm8737_set_bias_level(codec, SND_SOC_BIAS_OFF);
555 return 0;
556}
557
558static int wm8737_resume(struct snd_soc_codec *codec)
559{
560 wm8737_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
561 return 0;
562}
563#else
564#define wm8737_suspend NULL
565#define wm8737_resume NULL
566#endif
567
568static int wm8737_probe(struct snd_soc_codec *codec)
569{
570 struct wm8737_priv *wm8737 = snd_soc_codec_get_drvdata(codec);
571 int ret;
572
573 ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP);
574 if (ret != 0) {
575 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
576 return ret;
577 }
578
579 ret = regulator_bulk_enable(ARRAY_SIZE(wm8737->supplies),
580 wm8737->supplies);
581 if (ret != 0) {
582 dev_err(codec->dev, "Failed to enable supplies: %d\n", ret);
583 goto err_get;
584 }
585
586 ret = wm8737_reset(codec);
587 if (ret < 0) {
588 dev_err(codec->dev, "Failed to issue reset\n");
589 goto err_enable;
590 }
591
592 snd_soc_update_bits(codec, WM8737_LEFT_PGA_VOLUME, WM8737_LVU,
593 WM8737_LVU);
594 snd_soc_update_bits(codec, WM8737_RIGHT_PGA_VOLUME, WM8737_RVU,
595 WM8737_RVU);
596
597 wm8737_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
598
599 /* Bias level configuration will have done an extra enable */
600 regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies);
601
602 snd_soc_add_codec_controls(codec, wm8737_snd_controls,
603 ARRAY_SIZE(wm8737_snd_controls));
604 wm8737_add_widgets(codec);
605
606 return 0;
607
608err_enable:
609 regulator_bulk_disable(ARRAY_SIZE(wm8737->supplies), wm8737->supplies);
610err_get:
611 return ret;
612}
613
614static int wm8737_remove(struct snd_soc_codec *codec)
615{
616 wm8737_set_bias_level(codec, SND_SOC_BIAS_OFF);
617 return 0;
618}
619
620static struct snd_soc_codec_driver soc_codec_dev_wm8737 = {
621 .probe = wm8737_probe,
622 .remove = wm8737_remove,
623 .suspend = wm8737_suspend,
624 .resume = wm8737_resume,
625 .set_bias_level = wm8737_set_bias_level,
626};
627
628static const struct of_device_id wm8737_of_match[] = {
629 { .compatible = "wlf,wm8737", },
630 { }
631};
632
633MODULE_DEVICE_TABLE(of, wm8737_of_match);
634
635static const struct regmap_config wm8737_regmap = {
636 .reg_bits = 7,
637 .val_bits = 9,
638 .max_register = WM8737_MAX_REGISTER,
639
640 .reg_defaults = wm8737_reg_defaults,
641 .num_reg_defaults = ARRAY_SIZE(wm8737_reg_defaults),
642 .cache_type = REGCACHE_RBTREE,
643
644 .volatile_reg = wm8737_volatile,
645};
646
647#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
648static int wm8737_i2c_probe(struct i2c_client *i2c,
649 const struct i2c_device_id *id)
650{
651 struct wm8737_priv *wm8737;
652 int ret, i;
653
654 wm8737 = devm_kzalloc(&i2c->dev, sizeof(struct wm8737_priv),
655 GFP_KERNEL);
656 if (wm8737 == NULL)
657 return -ENOMEM;
658
659 for (i = 0; i < ARRAY_SIZE(wm8737->supplies); i++)
660 wm8737->supplies[i].supply = wm8737_supply_names[i];
661
662 ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8737->supplies),
663 wm8737->supplies);
664 if (ret != 0) {
665 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
666 return ret;
667 }
668
669 wm8737->regmap = devm_regmap_init_i2c(i2c, &wm8737_regmap);
670 if (IS_ERR(wm8737->regmap))
671 return PTR_ERR(wm8737->regmap);
672
673 i2c_set_clientdata(i2c, wm8737);
674
675 ret = snd_soc_register_codec(&i2c->dev,
676 &soc_codec_dev_wm8737, &wm8737_dai, 1);
677
678 return ret;
679
680}
681
682static int wm8737_i2c_remove(struct i2c_client *client)
683{
684 snd_soc_unregister_codec(&client->dev);
685
686 return 0;
687}
688
689static const struct i2c_device_id wm8737_i2c_id[] = {
690 { "wm8737", 0 },
691 { }
692};
693MODULE_DEVICE_TABLE(i2c, wm8737_i2c_id);
694
695static struct i2c_driver wm8737_i2c_driver = {
696 .driver = {
697 .name = "wm8737",
698 .owner = THIS_MODULE,
699 .of_match_table = wm8737_of_match,
700 },
701 .probe = wm8737_i2c_probe,
702 .remove = wm8737_i2c_remove,
703 .id_table = wm8737_i2c_id,
704};
705#endif
706
707#if defined(CONFIG_SPI_MASTER)
708static int wm8737_spi_probe(struct spi_device *spi)
709{
710 struct wm8737_priv *wm8737;
711 int ret, i;
712
713 wm8737 = devm_kzalloc(&spi->dev, sizeof(struct wm8737_priv),
714 GFP_KERNEL);
715 if (wm8737 == NULL)
716 return -ENOMEM;
717
718 for (i = 0; i < ARRAY_SIZE(wm8737->supplies); i++)
719 wm8737->supplies[i].supply = wm8737_supply_names[i];
720
721 ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8737->supplies),
722 wm8737->supplies);
723 if (ret != 0) {
724 dev_err(&spi->dev, "Failed to request supplies: %d\n", ret);
725 return ret;
726 }
727
728 wm8737->regmap = devm_regmap_init_spi(spi, &wm8737_regmap);
729 if (IS_ERR(wm8737->regmap))
730 return PTR_ERR(wm8737->regmap);
731
732 spi_set_drvdata(spi, wm8737);
733
734 ret = snd_soc_register_codec(&spi->dev,
735 &soc_codec_dev_wm8737, &wm8737_dai, 1);
736
737 return ret;
738}
739
740static int wm8737_spi_remove(struct spi_device *spi)
741{
742 snd_soc_unregister_codec(&spi->dev);
743
744 return 0;
745}
746
747static struct spi_driver wm8737_spi_driver = {
748 .driver = {
749 .name = "wm8737",
750 .owner = THIS_MODULE,
751 .of_match_table = wm8737_of_match,
752 },
753 .probe = wm8737_spi_probe,
754 .remove = wm8737_spi_remove,
755};
756#endif /* CONFIG_SPI_MASTER */
757
758static int __init wm8737_modinit(void)
759{
760 int ret;
761#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
762 ret = i2c_add_driver(&wm8737_i2c_driver);
763 if (ret != 0) {
764 printk(KERN_ERR "Failed to register WM8737 I2C driver: %d\n",
765 ret);
766 }
767#endif
768#if defined(CONFIG_SPI_MASTER)
769 ret = spi_register_driver(&wm8737_spi_driver);
770 if (ret != 0) {
771 printk(KERN_ERR "Failed to register WM8737 SPI driver: %d\n",
772 ret);
773 }
774#endif
775 return 0;
776}
777module_init(wm8737_modinit);
778
779static void __exit wm8737_exit(void)
780{
781#if defined(CONFIG_SPI_MASTER)
782 spi_unregister_driver(&wm8737_spi_driver);
783#endif
784#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
785 i2c_del_driver(&wm8737_i2c_driver);
786#endif
787}
788module_exit(wm8737_exit);
789
790MODULE_DESCRIPTION("ASoC WM8737 driver");
791MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
792MODULE_LICENSE("GPL");