This source file includes following definitions.
- wm8731_volatile
- wm8731_set_deemph
- wm8731_get_deemph
- wm8731_put_deemph
- wm8731_check_osc
- get_coeff
- wm8731_hw_params
- wm8731_mute
- wm8731_set_dai_sysclk
- wm8731_set_dai_fmt
- wm8731_set_bias_level
- wm8731_startup
- wm8731_request_supplies
- wm8731_hw_init
- wm8731_spi_probe
- wm8731_spi_remove
- wm8731_i2c_probe
- wm8731_i2c_remove
- wm8731_modinit
- wm8731_exit
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13 #include <linux/module.h>
14 #include <linux/moduleparam.h>
15 #include <linux/init.h>
16 #include <linux/delay.h>
17 #include <linux/pm.h>
18 #include <linux/i2c.h>
19 #include <linux/slab.h>
20 #include <linux/regmap.h>
21 #include <linux/regulator/consumer.h>
22 #include <linux/spi/spi.h>
23 #include <linux/of_device.h>
24 #include <linux/mutex.h>
25 #include <linux/clk.h>
26 #include <sound/core.h>
27 #include <sound/pcm.h>
28 #include <sound/pcm_params.h>
29 #include <sound/soc.h>
30 #include <sound/initval.h>
31 #include <sound/tlv.h>
32
33 #include "wm8731.h"
34
35 #define WM8731_NUM_SUPPLIES 4
36 static const char *wm8731_supply_names[WM8731_NUM_SUPPLIES] = {
37 "AVDD",
38 "HPVDD",
39 "DCVDD",
40 "DBVDD",
41 };
42
43
44 struct wm8731_priv {
45 struct regmap *regmap;
46 struct clk *mclk;
47 struct regulator_bulk_data supplies[WM8731_NUM_SUPPLIES];
48 const struct snd_pcm_hw_constraint_list *constraints;
49 unsigned int sysclk;
50 int sysclk_type;
51 int playback_fs;
52 bool deemph;
53
54 struct mutex lock;
55 };
56
57
58
59
60
61 static const struct reg_default wm8731_reg_defaults[] = {
62 { 0, 0x0097 },
63 { 1, 0x0097 },
64 { 2, 0x0079 },
65 { 3, 0x0079 },
66 { 4, 0x000a },
67 { 5, 0x0008 },
68 { 6, 0x009f },
69 { 7, 0x000a },
70 { 8, 0x0000 },
71 { 9, 0x0000 },
72 };
73
74 static bool wm8731_volatile(struct device *dev, unsigned int reg)
75 {
76 return reg == WM8731_RESET;
77 }
78
79 #define wm8731_reset(m) regmap_write(m, WM8731_RESET, 0)
80
81 static const char *wm8731_input_select[] = {"Line In", "Mic"};
82
83 static SOC_ENUM_SINGLE_DECL(wm8731_insel_enum,
84 WM8731_APANA, 2, wm8731_input_select);
85
86 static int wm8731_deemph[] = { 0, 32000, 44100, 48000 };
87
88 static int wm8731_set_deemph(struct snd_soc_component *component)
89 {
90 struct wm8731_priv *wm8731 = snd_soc_component_get_drvdata(component);
91 int val, i, best;
92
93
94
95
96 if (wm8731->deemph) {
97 best = 1;
98 for (i = 2; i < ARRAY_SIZE(wm8731_deemph); i++) {
99 if (abs(wm8731_deemph[i] - wm8731->playback_fs) <
100 abs(wm8731_deemph[best] - wm8731->playback_fs))
101 best = i;
102 }
103
104 val = best << 1;
105 } else {
106 best = 0;
107 val = 0;
108 }
109
110 dev_dbg(component->dev, "Set deemphasis %d (%dHz)\n",
111 best, wm8731_deemph[best]);
112
113 return snd_soc_component_update_bits(component, WM8731_APDIGI, 0x6, val);
114 }
115
116 static int wm8731_get_deemph(struct snd_kcontrol *kcontrol,
117 struct snd_ctl_elem_value *ucontrol)
118 {
119 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
120 struct wm8731_priv *wm8731 = snd_soc_component_get_drvdata(component);
121
122 ucontrol->value.integer.value[0] = wm8731->deemph;
123
124 return 0;
125 }
126
127 static int wm8731_put_deemph(struct snd_kcontrol *kcontrol,
128 struct snd_ctl_elem_value *ucontrol)
129 {
130 struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
131 struct wm8731_priv *wm8731 = snd_soc_component_get_drvdata(component);
132 unsigned int deemph = ucontrol->value.integer.value[0];
133 int ret = 0;
134
135 if (deemph > 1)
136 return -EINVAL;
137
138 mutex_lock(&wm8731->lock);
139 if (wm8731->deemph != deemph) {
140 wm8731->deemph = deemph;
141
142 wm8731_set_deemph(component);
143
144 ret = 1;
145 }
146 mutex_unlock(&wm8731->lock);
147
148 return ret;
149 }
150
151 static const DECLARE_TLV_DB_SCALE(in_tlv, -3450, 150, 0);
152 static const DECLARE_TLV_DB_SCALE(sidetone_tlv, -1500, 300, 0);
153 static const DECLARE_TLV_DB_SCALE(out_tlv, -12100, 100, 1);
154 static const DECLARE_TLV_DB_SCALE(mic_tlv, 0, 2000, 0);
155
156 static const struct snd_kcontrol_new wm8731_snd_controls[] = {
157
158 SOC_DOUBLE_R_TLV("Master Playback Volume", WM8731_LOUT1V, WM8731_ROUT1V,
159 0, 127, 0, out_tlv),
160 SOC_DOUBLE_R("Master Playback ZC Switch", WM8731_LOUT1V, WM8731_ROUT1V,
161 7, 1, 0),
162
163 SOC_DOUBLE_R_TLV("Capture Volume", WM8731_LINVOL, WM8731_RINVOL, 0, 31, 0,
164 in_tlv),
165 SOC_DOUBLE_R("Line Capture Switch", WM8731_LINVOL, WM8731_RINVOL, 7, 1, 1),
166
167 SOC_SINGLE_TLV("Mic Boost Volume", WM8731_APANA, 0, 1, 0, mic_tlv),
168 SOC_SINGLE("Mic Capture Switch", WM8731_APANA, 1, 1, 1),
169
170 SOC_SINGLE_TLV("Sidetone Playback Volume", WM8731_APANA, 6, 3, 1,
171 sidetone_tlv),
172
173 SOC_SINGLE("ADC High Pass Filter Switch", WM8731_APDIGI, 0, 1, 1),
174 SOC_SINGLE("Store DC Offset Switch", WM8731_APDIGI, 4, 1, 0),
175
176 SOC_SINGLE_BOOL_EXT("Playback Deemphasis Switch", 0,
177 wm8731_get_deemph, wm8731_put_deemph),
178 };
179
180
181 static const struct snd_kcontrol_new wm8731_output_mixer_controls[] = {
182 SOC_DAPM_SINGLE("Line Bypass Switch", WM8731_APANA, 3, 1, 0),
183 SOC_DAPM_SINGLE("Mic Sidetone Switch", WM8731_APANA, 5, 1, 0),
184 SOC_DAPM_SINGLE("HiFi Playback Switch", WM8731_APANA, 4, 1, 0),
185 };
186
187
188 static const struct snd_kcontrol_new wm8731_input_mux_controls =
189 SOC_DAPM_ENUM("Input Select", wm8731_insel_enum);
190
191 static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {
192 SND_SOC_DAPM_SUPPLY("ACTIVE",WM8731_ACTIVE, 0, 0, NULL, 0),
193 SND_SOC_DAPM_SUPPLY("OSC", WM8731_PWR, 5, 1, NULL, 0),
194 SND_SOC_DAPM_MIXER("Output Mixer", WM8731_PWR, 4, 1,
195 &wm8731_output_mixer_controls[0],
196 ARRAY_SIZE(wm8731_output_mixer_controls)),
197 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8731_PWR, 3, 1),
198 SND_SOC_DAPM_OUTPUT("LOUT"),
199 SND_SOC_DAPM_OUTPUT("LHPOUT"),
200 SND_SOC_DAPM_OUTPUT("ROUT"),
201 SND_SOC_DAPM_OUTPUT("RHPOUT"),
202 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8731_PWR, 2, 1),
203 SND_SOC_DAPM_MUX("Input Mux", SND_SOC_NOPM, 0, 0, &wm8731_input_mux_controls),
204 SND_SOC_DAPM_PGA("Line Input", WM8731_PWR, 0, 1, NULL, 0),
205 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8731_PWR, 1, 1),
206 SND_SOC_DAPM_INPUT("MICIN"),
207 SND_SOC_DAPM_INPUT("RLINEIN"),
208 SND_SOC_DAPM_INPUT("LLINEIN"),
209 };
210
211 static int wm8731_check_osc(struct snd_soc_dapm_widget *source,
212 struct snd_soc_dapm_widget *sink)
213 {
214 struct snd_soc_component *component = snd_soc_dapm_to_component(source->dapm);
215 struct wm8731_priv *wm8731 = snd_soc_component_get_drvdata(component);
216
217 return wm8731->sysclk_type == WM8731_SYSCLK_XTAL;
218 }
219
220 static const struct snd_soc_dapm_route wm8731_intercon[] = {
221 {"DAC", NULL, "OSC", wm8731_check_osc},
222 {"ADC", NULL, "OSC", wm8731_check_osc},
223 {"DAC", NULL, "ACTIVE"},
224 {"ADC", NULL, "ACTIVE"},
225
226
227 {"Output Mixer", "Line Bypass Switch", "Line Input"},
228 {"Output Mixer", "HiFi Playback Switch", "DAC"},
229 {"Output Mixer", "Mic Sidetone Switch", "Mic Bias"},
230
231
232 {"RHPOUT", NULL, "Output Mixer"},
233 {"ROUT", NULL, "Output Mixer"},
234 {"LHPOUT", NULL, "Output Mixer"},
235 {"LOUT", NULL, "Output Mixer"},
236
237
238 {"Input Mux", "Line In", "Line Input"},
239 {"Input Mux", "Mic", "Mic Bias"},
240 {"ADC", NULL, "Input Mux"},
241
242
243 {"Line Input", NULL, "LLINEIN"},
244 {"Line Input", NULL, "RLINEIN"},
245 {"Mic Bias", NULL, "MICIN"},
246 };
247
248 struct _coeff_div {
249 u32 mclk;
250 u32 rate;
251 u16 fs;
252 u8 sr:4;
253 u8 bosr:1;
254 u8 usb:1;
255 };
256
257
258 static const struct _coeff_div coeff_div[] = {
259
260 {12288000, 48000, 256, 0x0, 0x0, 0x0},
261 {18432000, 48000, 384, 0x0, 0x1, 0x0},
262 {12000000, 48000, 250, 0x0, 0x0, 0x1},
263
264
265 {12288000, 32000, 384, 0x6, 0x0, 0x0},
266 {18432000, 32000, 576, 0x6, 0x1, 0x0},
267 {12000000, 32000, 375, 0x6, 0x0, 0x1},
268
269
270 {12288000, 8000, 1536, 0x3, 0x0, 0x0},
271 {18432000, 8000, 2304, 0x3, 0x1, 0x0},
272 {11289600, 8000, 1408, 0xb, 0x0, 0x0},
273 {16934400, 8000, 2112, 0xb, 0x1, 0x0},
274 {12000000, 8000, 1500, 0x3, 0x0, 0x1},
275
276
277 {12288000, 96000, 128, 0x7, 0x0, 0x0},
278 {18432000, 96000, 192, 0x7, 0x1, 0x0},
279 {12000000, 96000, 125, 0x7, 0x0, 0x1},
280
281
282 {11289600, 44100, 256, 0x8, 0x0, 0x0},
283 {16934400, 44100, 384, 0x8, 0x1, 0x0},
284 {12000000, 44100, 272, 0x8, 0x1, 0x1},
285
286
287 {11289600, 88200, 128, 0xf, 0x0, 0x0},
288 {16934400, 88200, 192, 0xf, 0x1, 0x0},
289 {12000000, 88200, 136, 0xf, 0x1, 0x1},
290 };
291
292
293 static const unsigned int wm8731_rates_12000000[] = {
294 8000, 32000, 44100, 48000, 96000, 88200,
295 };
296
297 static const unsigned int wm8731_rates_12288000_18432000[] = {
298 8000, 32000, 48000, 96000,
299 };
300
301 static const unsigned int wm8731_rates_11289600_16934400[] = {
302 8000, 44100, 88200,
303 };
304
305 static const struct snd_pcm_hw_constraint_list wm8731_constraints_12000000 = {
306 .list = wm8731_rates_12000000,
307 .count = ARRAY_SIZE(wm8731_rates_12000000),
308 };
309
310 static const
311 struct snd_pcm_hw_constraint_list wm8731_constraints_12288000_18432000 = {
312 .list = wm8731_rates_12288000_18432000,
313 .count = ARRAY_SIZE(wm8731_rates_12288000_18432000),
314 };
315
316 static const
317 struct snd_pcm_hw_constraint_list wm8731_constraints_11289600_16934400 = {
318 .list = wm8731_rates_11289600_16934400,
319 .count = ARRAY_SIZE(wm8731_rates_11289600_16934400),
320 };
321
322 static inline int get_coeff(int mclk, int rate)
323 {
324 int i;
325
326 for (i = 0; i < ARRAY_SIZE(coeff_div); i++) {
327 if (coeff_div[i].rate == rate && coeff_div[i].mclk == mclk)
328 return i;
329 }
330 return 0;
331 }
332
333 static int wm8731_hw_params(struct snd_pcm_substream *substream,
334 struct snd_pcm_hw_params *params,
335 struct snd_soc_dai *dai)
336 {
337 struct snd_soc_component *component = dai->component;
338 struct wm8731_priv *wm8731 = snd_soc_component_get_drvdata(component);
339 u16 iface = snd_soc_component_read32(component, WM8731_IFACE) & 0xfff3;
340 int i = get_coeff(wm8731->sysclk, params_rate(params));
341 u16 srate = (coeff_div[i].sr << 2) |
342 (coeff_div[i].bosr << 1) | coeff_div[i].usb;
343
344 wm8731->playback_fs = params_rate(params);
345
346 snd_soc_component_write(component, WM8731_SRATE, srate);
347
348
349 switch (params_width(params)) {
350 case 16:
351 break;
352 case 20:
353 iface |= 0x0004;
354 break;
355 case 24:
356 iface |= 0x0008;
357 break;
358 case 32:
359 iface |= 0x000c;
360 break;
361 }
362
363 wm8731_set_deemph(component);
364
365 snd_soc_component_write(component, WM8731_IFACE, iface);
366 return 0;
367 }
368
369 static int wm8731_mute(struct snd_soc_dai *dai, int mute)
370 {
371 struct snd_soc_component *component = dai->component;
372 u16 mute_reg = snd_soc_component_read32(component, WM8731_APDIGI) & 0xfff7;
373
374 if (mute)
375 snd_soc_component_write(component, WM8731_APDIGI, mute_reg | 0x8);
376 else
377 snd_soc_component_write(component, WM8731_APDIGI, mute_reg);
378 return 0;
379 }
380
381 static int wm8731_set_dai_sysclk(struct snd_soc_dai *codec_dai,
382 int clk_id, unsigned int freq, int dir)
383 {
384 struct snd_soc_component *component = codec_dai->component;
385 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
386 struct wm8731_priv *wm8731 = snd_soc_component_get_drvdata(component);
387
388 switch (clk_id) {
389 case WM8731_SYSCLK_XTAL:
390 case WM8731_SYSCLK_MCLK:
391 if (wm8731->mclk && clk_set_rate(wm8731->mclk, freq))
392 return -EINVAL;
393 wm8731->sysclk_type = clk_id;
394 break;
395 default:
396 return -EINVAL;
397 }
398
399 switch (freq) {
400 case 0:
401 wm8731->constraints = NULL;
402 break;
403 case 12000000:
404 wm8731->constraints = &wm8731_constraints_12000000;
405 break;
406 case 12288000:
407 case 18432000:
408 wm8731->constraints = &wm8731_constraints_12288000_18432000;
409 break;
410 case 16934400:
411 case 11289600:
412 wm8731->constraints = &wm8731_constraints_11289600_16934400;
413 break;
414 default:
415 return -EINVAL;
416 }
417
418 wm8731->sysclk = freq;
419
420 snd_soc_dapm_sync(dapm);
421
422 return 0;
423 }
424
425
426 static int wm8731_set_dai_fmt(struct snd_soc_dai *codec_dai,
427 unsigned int fmt)
428 {
429 struct snd_soc_component *component = codec_dai->component;
430 u16 iface = 0;
431
432
433 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
434 case SND_SOC_DAIFMT_CBM_CFM:
435 iface |= 0x0040;
436 break;
437 case SND_SOC_DAIFMT_CBS_CFS:
438 break;
439 default:
440 return -EINVAL;
441 }
442
443
444 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
445 case SND_SOC_DAIFMT_I2S:
446 iface |= 0x0002;
447 break;
448 case SND_SOC_DAIFMT_RIGHT_J:
449 break;
450 case SND_SOC_DAIFMT_LEFT_J:
451 iface |= 0x0001;
452 break;
453 case SND_SOC_DAIFMT_DSP_A:
454 iface |= 0x0013;
455 break;
456 case SND_SOC_DAIFMT_DSP_B:
457 iface |= 0x0003;
458 break;
459 default:
460 return -EINVAL;
461 }
462
463
464 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
465 case SND_SOC_DAIFMT_NB_NF:
466 break;
467 case SND_SOC_DAIFMT_IB_IF:
468 iface |= 0x0090;
469 break;
470 case SND_SOC_DAIFMT_IB_NF:
471 iface |= 0x0080;
472 break;
473 case SND_SOC_DAIFMT_NB_IF:
474 iface |= 0x0010;
475 break;
476 default:
477 return -EINVAL;
478 }
479
480
481 snd_soc_component_write(component, WM8731_IFACE, iface);
482 return 0;
483 }
484
485 static int wm8731_set_bias_level(struct snd_soc_component *component,
486 enum snd_soc_bias_level level)
487 {
488 struct wm8731_priv *wm8731 = snd_soc_component_get_drvdata(component);
489 int ret;
490 u16 reg;
491
492 switch (level) {
493 case SND_SOC_BIAS_ON:
494 if (wm8731->mclk) {
495 ret = clk_prepare_enable(wm8731->mclk);
496 if (ret)
497 return ret;
498 }
499 break;
500 case SND_SOC_BIAS_PREPARE:
501 break;
502 case SND_SOC_BIAS_STANDBY:
503 if (snd_soc_component_get_bias_level(component) == SND_SOC_BIAS_OFF) {
504 ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
505 wm8731->supplies);
506 if (ret != 0)
507 return ret;
508
509 regcache_sync(wm8731->regmap);
510 }
511
512
513 reg = snd_soc_component_read32(component, WM8731_PWR) & 0xff7f;
514 snd_soc_component_write(component, WM8731_PWR, reg | 0x0040);
515 break;
516 case SND_SOC_BIAS_OFF:
517 if (wm8731->mclk)
518 clk_disable_unprepare(wm8731->mclk);
519 snd_soc_component_write(component, WM8731_PWR, 0xffff);
520 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies),
521 wm8731->supplies);
522 regcache_mark_dirty(wm8731->regmap);
523 break;
524 }
525 return 0;
526 }
527
528 static int wm8731_startup(struct snd_pcm_substream *substream,
529 struct snd_soc_dai *dai)
530 {
531 struct wm8731_priv *wm8731 = snd_soc_component_get_drvdata(dai->component);
532
533 if (wm8731->constraints)
534 snd_pcm_hw_constraint_list(substream->runtime, 0,
535 SNDRV_PCM_HW_PARAM_RATE,
536 wm8731->constraints);
537
538 return 0;
539 }
540
541 #define WM8731_RATES SNDRV_PCM_RATE_8000_96000
542
543 #define WM8731_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
544 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
545
546 static const struct snd_soc_dai_ops wm8731_dai_ops = {
547 .startup = wm8731_startup,
548 .hw_params = wm8731_hw_params,
549 .digital_mute = wm8731_mute,
550 .set_sysclk = wm8731_set_dai_sysclk,
551 .set_fmt = wm8731_set_dai_fmt,
552 };
553
554 static struct snd_soc_dai_driver wm8731_dai = {
555 .name = "wm8731-hifi",
556 .playback = {
557 .stream_name = "Playback",
558 .channels_min = 1,
559 .channels_max = 2,
560 .rates = WM8731_RATES,
561 .formats = WM8731_FORMATS,},
562 .capture = {
563 .stream_name = "Capture",
564 .channels_min = 1,
565 .channels_max = 2,
566 .rates = WM8731_RATES,
567 .formats = WM8731_FORMATS,},
568 .ops = &wm8731_dai_ops,
569 .symmetric_rates = 1,
570 };
571
572 static int wm8731_request_supplies(struct device *dev,
573 struct wm8731_priv *wm8731)
574 {
575 int ret = 0, i;
576
577 for (i = 0; i < ARRAY_SIZE(wm8731->supplies); i++)
578 wm8731->supplies[i].supply = wm8731_supply_names[i];
579
580 ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(wm8731->supplies),
581 wm8731->supplies);
582 if (ret != 0) {
583 dev_err(dev, "Failed to request supplies: %d\n", ret);
584 return ret;
585 }
586
587 ret = regulator_bulk_enable(ARRAY_SIZE(wm8731->supplies),
588 wm8731->supplies);
589 if (ret != 0) {
590 dev_err(dev, "Failed to enable supplies: %d\n", ret);
591 return ret;
592 }
593
594 return 0;
595 }
596
597 static int wm8731_hw_init(struct device *dev, struct wm8731_priv *wm8731)
598 {
599 int ret = 0;
600
601 ret = wm8731_reset(wm8731->regmap);
602 if (ret < 0) {
603 dev_err(dev, "Failed to issue reset: %d\n", ret);
604 goto err_regulator_enable;
605 }
606
607
608 regmap_write(wm8731->regmap, WM8731_PWR, 0x7f);
609
610
611 regmap_update_bits(wm8731->regmap, WM8731_LOUT1V, 0x100, 0);
612 regmap_update_bits(wm8731->regmap, WM8731_ROUT1V, 0x100, 0);
613 regmap_update_bits(wm8731->regmap, WM8731_LINVOL, 0x100, 0);
614 regmap_update_bits(wm8731->regmap, WM8731_RINVOL, 0x100, 0);
615
616
617 regmap_update_bits(wm8731->regmap, WM8731_APANA, 0x8, 0);
618
619 regcache_mark_dirty(wm8731->regmap);
620
621 err_regulator_enable:
622
623 regulator_bulk_disable(ARRAY_SIZE(wm8731->supplies), wm8731->supplies);
624
625 return ret;
626 }
627
628 static const struct snd_soc_component_driver soc_component_dev_wm8731 = {
629 .set_bias_level = wm8731_set_bias_level,
630 .controls = wm8731_snd_controls,
631 .num_controls = ARRAY_SIZE(wm8731_snd_controls),
632 .dapm_widgets = wm8731_dapm_widgets,
633 .num_dapm_widgets = ARRAY_SIZE(wm8731_dapm_widgets),
634 .dapm_routes = wm8731_intercon,
635 .num_dapm_routes = ARRAY_SIZE(wm8731_intercon),
636 .suspend_bias_off = 1,
637 .idle_bias_on = 1,
638 .use_pmdown_time = 1,
639 .endianness = 1,
640 .non_legacy_dai_naming = 1,
641 };
642
643 static const struct of_device_id wm8731_of_match[] = {
644 { .compatible = "wlf,wm8731", },
645 { }
646 };
647
648 MODULE_DEVICE_TABLE(of, wm8731_of_match);
649
650 static const struct regmap_config wm8731_regmap = {
651 .reg_bits = 7,
652 .val_bits = 9,
653
654 .max_register = WM8731_RESET,
655 .volatile_reg = wm8731_volatile,
656
657 .cache_type = REGCACHE_RBTREE,
658 .reg_defaults = wm8731_reg_defaults,
659 .num_reg_defaults = ARRAY_SIZE(wm8731_reg_defaults),
660 };
661
662 #if defined(CONFIG_SPI_MASTER)
663 static int wm8731_spi_probe(struct spi_device *spi)
664 {
665 struct wm8731_priv *wm8731;
666 int ret;
667
668 wm8731 = devm_kzalloc(&spi->dev, sizeof(*wm8731), GFP_KERNEL);
669 if (wm8731 == NULL)
670 return -ENOMEM;
671
672 wm8731->mclk = devm_clk_get(&spi->dev, "mclk");
673 if (IS_ERR(wm8731->mclk)) {
674 ret = PTR_ERR(wm8731->mclk);
675 if (ret == -ENOENT) {
676 wm8731->mclk = NULL;
677 dev_warn(&spi->dev, "Assuming static MCLK\n");
678 } else {
679 dev_err(&spi->dev, "Failed to get MCLK: %d\n",
680 ret);
681 return ret;
682 }
683 }
684
685 mutex_init(&wm8731->lock);
686
687 spi_set_drvdata(spi, wm8731);
688
689 ret = wm8731_request_supplies(&spi->dev, wm8731);
690 if (ret != 0)
691 return ret;
692
693 wm8731->regmap = devm_regmap_init_spi(spi, &wm8731_regmap);
694 if (IS_ERR(wm8731->regmap)) {
695 ret = PTR_ERR(wm8731->regmap);
696 dev_err(&spi->dev, "Failed to allocate register map: %d\n",
697 ret);
698 return ret;
699 }
700
701 ret = wm8731_hw_init(&spi->dev, wm8731);
702 if (ret != 0)
703 return ret;
704
705 ret = devm_snd_soc_register_component(&spi->dev,
706 &soc_component_dev_wm8731, &wm8731_dai, 1);
707 if (ret != 0) {
708 dev_err(&spi->dev, "Failed to register CODEC: %d\n", ret);
709 return ret;
710 }
711
712 return 0;
713 }
714
715 static int wm8731_spi_remove(struct spi_device *spi)
716 {
717 return 0;
718 }
719
720 static struct spi_driver wm8731_spi_driver = {
721 .driver = {
722 .name = "wm8731",
723 .of_match_table = wm8731_of_match,
724 },
725 .probe = wm8731_spi_probe,
726 .remove = wm8731_spi_remove,
727 };
728 #endif
729
730 #if IS_ENABLED(CONFIG_I2C)
731 static int wm8731_i2c_probe(struct i2c_client *i2c,
732 const struct i2c_device_id *id)
733 {
734 struct wm8731_priv *wm8731;
735 int ret;
736
737 wm8731 = devm_kzalloc(&i2c->dev, sizeof(struct wm8731_priv),
738 GFP_KERNEL);
739 if (wm8731 == NULL)
740 return -ENOMEM;
741
742 wm8731->mclk = devm_clk_get(&i2c->dev, "mclk");
743 if (IS_ERR(wm8731->mclk)) {
744 ret = PTR_ERR(wm8731->mclk);
745 if (ret == -ENOENT) {
746 wm8731->mclk = NULL;
747 dev_warn(&i2c->dev, "Assuming static MCLK\n");
748 } else {
749 dev_err(&i2c->dev, "Failed to get MCLK: %d\n",
750 ret);
751 return ret;
752 }
753 }
754
755 mutex_init(&wm8731->lock);
756
757 i2c_set_clientdata(i2c, wm8731);
758
759 ret = wm8731_request_supplies(&i2c->dev, wm8731);
760 if (ret != 0)
761 return ret;
762
763 wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap);
764 if (IS_ERR(wm8731->regmap)) {
765 ret = PTR_ERR(wm8731->regmap);
766 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
767 ret);
768 return ret;
769 }
770
771 ret = wm8731_hw_init(&i2c->dev, wm8731);
772 if (ret != 0)
773 return ret;
774
775 ret = devm_snd_soc_register_component(&i2c->dev,
776 &soc_component_dev_wm8731, &wm8731_dai, 1);
777 if (ret != 0) {
778 dev_err(&i2c->dev, "Failed to register CODEC: %d\n", ret);
779 return ret;
780 }
781
782 return 0;
783 }
784
785 static int wm8731_i2c_remove(struct i2c_client *client)
786 {
787 return 0;
788 }
789
790 static const struct i2c_device_id wm8731_i2c_id[] = {
791 { "wm8731", 0 },
792 { }
793 };
794 MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id);
795
796 static struct i2c_driver wm8731_i2c_driver = {
797 .driver = {
798 .name = "wm8731",
799 .of_match_table = wm8731_of_match,
800 },
801 .probe = wm8731_i2c_probe,
802 .remove = wm8731_i2c_remove,
803 .id_table = wm8731_i2c_id,
804 };
805 #endif
806
807 static int __init wm8731_modinit(void)
808 {
809 int ret = 0;
810 #if IS_ENABLED(CONFIG_I2C)
811 ret = i2c_add_driver(&wm8731_i2c_driver);
812 if (ret != 0) {
813 printk(KERN_ERR "Failed to register WM8731 I2C driver: %d\n",
814 ret);
815 }
816 #endif
817 #if defined(CONFIG_SPI_MASTER)
818 ret = spi_register_driver(&wm8731_spi_driver);
819 if (ret != 0) {
820 printk(KERN_ERR "Failed to register WM8731 SPI driver: %d\n",
821 ret);
822 }
823 #endif
824 return ret;
825 }
826 module_init(wm8731_modinit);
827
828 static void __exit wm8731_exit(void)
829 {
830 #if IS_ENABLED(CONFIG_I2C)
831 i2c_del_driver(&wm8731_i2c_driver);
832 #endif
833 #if defined(CONFIG_SPI_MASTER)
834 spi_unregister_driver(&wm8731_spi_driver);
835 #endif
836 }
837 module_exit(wm8731_exit);
838
839 MODULE_DESCRIPTION("ASoC WM8731 driver");
840 MODULE_AUTHOR("Richard Purdie");
841 MODULE_LICENSE("GPL");