This source file includes following definitions.
- wm8741_reset
- wm8741_startup
- wm8741_hw_params
- wm8741_set_dai_sysclk
- wm8741_set_dai_fmt
- wm8741_mute
- wm8741_resume
- wm8741_configure
- wm8741_add_controls
- wm8741_probe
- wm8741_remove
- wm8741_set_pdata
- wm8741_i2c_probe
- wm8741_spi_probe
- wm8741_modinit
- wm8741_exit
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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/i2c.h>
16 #include <linux/spi/spi.h>
17 #include <linux/regmap.h>
18 #include <linux/regulator/consumer.h>
19 #include <linux/slab.h>
20 #include <linux/of_device.h>
21 #include <sound/core.h>
22 #include <sound/pcm.h>
23 #include <sound/pcm_params.h>
24 #include <sound/soc.h>
25 #include <sound/initval.h>
26 #include <sound/tlv.h>
27
28 #include "wm8741.h"
29
30 #define WM8741_NUM_SUPPLIES 2
31 static const char *wm8741_supply_names[WM8741_NUM_SUPPLIES] = {
32 "AVDD",
33 "DVDD",
34 };
35
36
37 struct wm8741_priv {
38 struct wm8741_platform_data pdata;
39 struct regmap *regmap;
40 struct regulator_bulk_data supplies[WM8741_NUM_SUPPLIES];
41 unsigned int sysclk;
42 const struct snd_pcm_hw_constraint_list *sysclk_constraints;
43 };
44
45 static const struct reg_default wm8741_reg_defaults[] = {
46 { 0, 0x0000 },
47 { 1, 0x0000 },
48 { 2, 0x0000 },
49 { 3, 0x0000 },
50 { 4, 0x0000 },
51 { 5, 0x000A },
52 { 6, 0x0000 },
53 { 7, 0x0000 },
54 { 8, 0x0002 },
55 { 32, 0x0002 },
56 };
57
58 static int wm8741_reset(struct snd_soc_component *component)
59 {
60 return snd_soc_component_write(component, WM8741_RESET, 0);
61 }
62
63 static const DECLARE_TLV_DB_SCALE(dac_tlv_fine, -12700, 13, 0);
64 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12700, 400, 0);
65
66 static const struct snd_kcontrol_new wm8741_snd_controls_stereo[] = {
67 SOC_DOUBLE_R_TLV("Fine Playback Volume", WM8741_DACLLSB_ATTENUATION,
68 WM8741_DACRLSB_ATTENUATION, 1, 255, 1, dac_tlv_fine),
69 SOC_DOUBLE_R_TLV("Playback Volume", WM8741_DACLMSB_ATTENUATION,
70 WM8741_DACRMSB_ATTENUATION, 0, 511, 1, dac_tlv),
71 };
72
73 static const struct snd_kcontrol_new wm8741_snd_controls_mono_left[] = {
74 SOC_SINGLE_TLV("Fine Playback Volume", WM8741_DACLLSB_ATTENUATION,
75 1, 255, 1, dac_tlv_fine),
76 SOC_SINGLE_TLV("Playback Volume", WM8741_DACLMSB_ATTENUATION,
77 0, 511, 1, dac_tlv),
78 };
79
80 static const struct snd_kcontrol_new wm8741_snd_controls_mono_right[] = {
81 SOC_SINGLE_TLV("Fine Playback Volume", WM8741_DACRLSB_ATTENUATION,
82 1, 255, 1, dac_tlv_fine),
83 SOC_SINGLE_TLV("Playback Volume", WM8741_DACRMSB_ATTENUATION,
84 0, 511, 1, dac_tlv),
85 };
86
87 static const struct snd_soc_dapm_widget wm8741_dapm_widgets[] = {
88 SND_SOC_DAPM_DAC("DACL", "Playback", SND_SOC_NOPM, 0, 0),
89 SND_SOC_DAPM_DAC("DACR", "Playback", SND_SOC_NOPM, 0, 0),
90 SND_SOC_DAPM_OUTPUT("VOUTLP"),
91 SND_SOC_DAPM_OUTPUT("VOUTLN"),
92 SND_SOC_DAPM_OUTPUT("VOUTRP"),
93 SND_SOC_DAPM_OUTPUT("VOUTRN"),
94 };
95
96 static const struct snd_soc_dapm_route wm8741_dapm_routes[] = {
97 { "VOUTLP", NULL, "DACL" },
98 { "VOUTLN", NULL, "DACL" },
99 { "VOUTRP", NULL, "DACR" },
100 { "VOUTRN", NULL, "DACR" },
101 };
102
103 static const unsigned int rates_11289[] = {
104 44100, 88200,
105 };
106
107 static const struct snd_pcm_hw_constraint_list constraints_11289 = {
108 .count = ARRAY_SIZE(rates_11289),
109 .list = rates_11289,
110 };
111
112 static const unsigned int rates_12288[] = {
113 32000, 48000, 96000,
114 };
115
116 static const struct snd_pcm_hw_constraint_list constraints_12288 = {
117 .count = ARRAY_SIZE(rates_12288),
118 .list = rates_12288,
119 };
120
121 static const unsigned int rates_16384[] = {
122 32000,
123 };
124
125 static const struct snd_pcm_hw_constraint_list constraints_16384 = {
126 .count = ARRAY_SIZE(rates_16384),
127 .list = rates_16384,
128 };
129
130 static const unsigned int rates_16934[] = {
131 44100, 88200,
132 };
133
134 static const struct snd_pcm_hw_constraint_list constraints_16934 = {
135 .count = ARRAY_SIZE(rates_16934),
136 .list = rates_16934,
137 };
138
139 static const unsigned int rates_18432[] = {
140 48000, 96000,
141 };
142
143 static const struct snd_pcm_hw_constraint_list constraints_18432 = {
144 .count = ARRAY_SIZE(rates_18432),
145 .list = rates_18432,
146 };
147
148 static const unsigned int rates_22579[] = {
149 44100, 88200, 176400
150 };
151
152 static const struct snd_pcm_hw_constraint_list constraints_22579 = {
153 .count = ARRAY_SIZE(rates_22579),
154 .list = rates_22579,
155 };
156
157 static const unsigned int rates_24576[] = {
158 32000, 48000, 96000, 192000
159 };
160
161 static const struct snd_pcm_hw_constraint_list constraints_24576 = {
162 .count = ARRAY_SIZE(rates_24576),
163 .list = rates_24576,
164 };
165
166 static const unsigned int rates_36864[] = {
167 48000, 96000, 192000
168 };
169
170 static const struct snd_pcm_hw_constraint_list constraints_36864 = {
171 .count = ARRAY_SIZE(rates_36864),
172 .list = rates_36864,
173 };
174
175 static int wm8741_startup(struct snd_pcm_substream *substream,
176 struct snd_soc_dai *dai)
177 {
178 struct snd_soc_component *component = dai->component;
179 struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
180
181 if (wm8741->sysclk)
182 snd_pcm_hw_constraint_list(substream->runtime, 0,
183 SNDRV_PCM_HW_PARAM_RATE,
184 wm8741->sysclk_constraints);
185
186 return 0;
187 }
188
189 static int wm8741_hw_params(struct snd_pcm_substream *substream,
190 struct snd_pcm_hw_params *params,
191 struct snd_soc_dai *dai)
192 {
193 struct snd_soc_component *component = dai->component;
194 struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
195 unsigned int iface, mode;
196 int i;
197
198
199
200
201 if (!wm8741->sysclk) {
202 dev_err(component->dev,
203 "No MCLK configured, call set_sysclk() on init or in hw_params\n");
204 return -EINVAL;
205 }
206
207
208 for (i = 0; i < wm8741->sysclk_constraints->count; i++) {
209 if (wm8741->sysclk_constraints->list[i] == params_rate(params))
210 break;
211 }
212
213 if (i == wm8741->sysclk_constraints->count) {
214 dev_err(component->dev, "LRCLK %d unsupported with MCLK %d\n",
215 params_rate(params), wm8741->sysclk);
216 return -EINVAL;
217 }
218
219
220 switch (params_width(params)) {
221 case 16:
222 iface = 0x0;
223 break;
224 case 20:
225 iface = 0x1;
226 break;
227 case 24:
228 iface = 0x2;
229 break;
230 case 32:
231 iface = 0x3;
232 break;
233 default:
234 dev_dbg(component->dev, "wm8741_hw_params: Unsupported bit size param = %d",
235 params_width(params));
236 return -EINVAL;
237 }
238
239
240 if (params_rate(params) > 96000)
241 mode = 0x40;
242 else if (params_rate(params) > 48000)
243 mode = 0x20;
244 else
245 mode = 0x00;
246
247 dev_dbg(component->dev, "wm8741_hw_params: bit size param = %d, rate param = %d",
248 params_width(params), params_rate(params));
249
250 snd_soc_component_update_bits(component, WM8741_FORMAT_CONTROL, WM8741_IWL_MASK,
251 iface);
252 snd_soc_component_update_bits(component, WM8741_MODE_CONTROL_1, WM8741_OSR_MASK,
253 mode);
254
255 return 0;
256 }
257
258 static int wm8741_set_dai_sysclk(struct snd_soc_dai *codec_dai,
259 int clk_id, unsigned int freq, int dir)
260 {
261 struct snd_soc_component *component = codec_dai->component;
262 struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
263
264 dev_dbg(component->dev, "wm8741_set_dai_sysclk info: freq=%dHz\n", freq);
265
266 switch (freq) {
267 case 0:
268 wm8741->sysclk_constraints = NULL;
269 break;
270 case 11289600:
271 wm8741->sysclk_constraints = &constraints_11289;
272 break;
273 case 12288000:
274 wm8741->sysclk_constraints = &constraints_12288;
275 break;
276 case 16384000:
277 wm8741->sysclk_constraints = &constraints_16384;
278 break;
279 case 16934400:
280 wm8741->sysclk_constraints = &constraints_16934;
281 break;
282 case 18432000:
283 wm8741->sysclk_constraints = &constraints_18432;
284 break;
285 case 22579200:
286 case 33868800:
287 wm8741->sysclk_constraints = &constraints_22579;
288 break;
289 case 24576000:
290 wm8741->sysclk_constraints = &constraints_24576;
291 break;
292 case 36864000:
293 wm8741->sysclk_constraints = &constraints_36864;
294 break;
295 default:
296 return -EINVAL;
297 }
298
299 wm8741->sysclk = freq;
300 return 0;
301 }
302
303 static int wm8741_set_dai_fmt(struct snd_soc_dai *codec_dai,
304 unsigned int fmt)
305 {
306 struct snd_soc_component *component = codec_dai->component;
307 unsigned int iface;
308
309
310 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
311 case SND_SOC_DAIFMT_CBS_CFS:
312 break;
313 default:
314 return -EINVAL;
315 }
316
317
318 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
319 case SND_SOC_DAIFMT_I2S:
320 iface = 0x08;
321 break;
322 case SND_SOC_DAIFMT_RIGHT_J:
323 iface = 0x00;
324 break;
325 case SND_SOC_DAIFMT_LEFT_J:
326 iface = 0x04;
327 break;
328 case SND_SOC_DAIFMT_DSP_A:
329 iface = 0x0C;
330 break;
331 case SND_SOC_DAIFMT_DSP_B:
332 iface = 0x1C;
333 break;
334 default:
335 return -EINVAL;
336 }
337
338
339 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
340 case SND_SOC_DAIFMT_NB_NF:
341 break;
342 case SND_SOC_DAIFMT_NB_IF:
343 iface |= 0x10;
344 break;
345 case SND_SOC_DAIFMT_IB_NF:
346 iface |= 0x20;
347 break;
348 case SND_SOC_DAIFMT_IB_IF:
349 iface |= 0x30;
350 break;
351 default:
352 return -EINVAL;
353 }
354
355
356 dev_dbg(component->dev, "wm8741_set_dai_fmt: Format=%x, Clock Inv=%x\n",
357 fmt & SND_SOC_DAIFMT_FORMAT_MASK,
358 ((fmt & SND_SOC_DAIFMT_INV_MASK)));
359
360 snd_soc_component_update_bits(component, WM8741_FORMAT_CONTROL,
361 WM8741_BCP_MASK | WM8741_LRP_MASK | WM8741_FMT_MASK,
362 iface);
363
364 return 0;
365 }
366
367 static int wm8741_mute(struct snd_soc_dai *codec_dai, int mute)
368 {
369 struct snd_soc_component *component = codec_dai->component;
370
371 snd_soc_component_update_bits(component, WM8741_VOLUME_CONTROL,
372 WM8741_SOFT_MASK, !!mute << WM8741_SOFT_SHIFT);
373 return 0;
374 }
375
376 #define WM8741_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
377 SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 | \
378 SNDRV_PCM_RATE_96000 | SNDRV_PCM_RATE_176400 | \
379 SNDRV_PCM_RATE_192000)
380
381 #define WM8741_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
382 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
383
384 static const struct snd_soc_dai_ops wm8741_dai_ops = {
385 .startup = wm8741_startup,
386 .hw_params = wm8741_hw_params,
387 .set_sysclk = wm8741_set_dai_sysclk,
388 .set_fmt = wm8741_set_dai_fmt,
389 .digital_mute = wm8741_mute,
390 };
391
392 static struct snd_soc_dai_driver wm8741_dai = {
393 .name = "wm8741",
394 .playback = {
395 .stream_name = "Playback",
396 .channels_min = 2,
397 .channels_max = 2,
398 .rates = WM8741_RATES,
399 .formats = WM8741_FORMATS,
400 },
401 .ops = &wm8741_dai_ops,
402 };
403
404 #ifdef CONFIG_PM
405 static int wm8741_resume(struct snd_soc_component *component)
406 {
407 snd_soc_component_cache_sync(component);
408 return 0;
409 }
410 #else
411 #define wm8741_resume NULL
412 #endif
413
414 static int wm8741_configure(struct snd_soc_component *component)
415 {
416 struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
417
418
419 switch (wm8741->pdata.diff_mode) {
420 case WM8741_DIFF_MODE_STEREO:
421 case WM8741_DIFF_MODE_STEREO_REVERSED:
422 case WM8741_DIFF_MODE_MONO_LEFT:
423 case WM8741_DIFF_MODE_MONO_RIGHT:
424 snd_soc_component_update_bits(component, WM8741_MODE_CONTROL_2,
425 WM8741_DIFF_MASK,
426 wm8741->pdata.diff_mode << WM8741_DIFF_SHIFT);
427 break;
428 default:
429 return -EINVAL;
430 }
431
432
433 snd_soc_component_update_bits(component, WM8741_DACLLSB_ATTENUATION,
434 WM8741_UPDATELL, WM8741_UPDATELL);
435 snd_soc_component_update_bits(component, WM8741_DACLMSB_ATTENUATION,
436 WM8741_UPDATELM, WM8741_UPDATELM);
437 snd_soc_component_update_bits(component, WM8741_DACRLSB_ATTENUATION,
438 WM8741_UPDATERL, WM8741_UPDATERL);
439 snd_soc_component_update_bits(component, WM8741_DACRMSB_ATTENUATION,
440 WM8741_UPDATERM, WM8741_UPDATERM);
441
442 return 0;
443 }
444
445 static int wm8741_add_controls(struct snd_soc_component *component)
446 {
447 struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
448
449 switch (wm8741->pdata.diff_mode) {
450 case WM8741_DIFF_MODE_STEREO:
451 case WM8741_DIFF_MODE_STEREO_REVERSED:
452 snd_soc_add_component_controls(component,
453 wm8741_snd_controls_stereo,
454 ARRAY_SIZE(wm8741_snd_controls_stereo));
455 break;
456 case WM8741_DIFF_MODE_MONO_LEFT:
457 snd_soc_add_component_controls(component,
458 wm8741_snd_controls_mono_left,
459 ARRAY_SIZE(wm8741_snd_controls_mono_left));
460 break;
461 case WM8741_DIFF_MODE_MONO_RIGHT:
462 snd_soc_add_component_controls(component,
463 wm8741_snd_controls_mono_right,
464 ARRAY_SIZE(wm8741_snd_controls_mono_right));
465 break;
466 default:
467 return -EINVAL;
468 }
469
470 return 0;
471 }
472
473 static int wm8741_probe(struct snd_soc_component *component)
474 {
475 struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
476 int ret = 0;
477
478 ret = regulator_bulk_enable(ARRAY_SIZE(wm8741->supplies),
479 wm8741->supplies);
480 if (ret != 0) {
481 dev_err(component->dev, "Failed to enable supplies: %d\n", ret);
482 goto err_get;
483 }
484
485 ret = wm8741_reset(component);
486 if (ret < 0) {
487 dev_err(component->dev, "Failed to issue reset\n");
488 goto err_enable;
489 }
490
491 ret = wm8741_configure(component);
492 if (ret < 0) {
493 dev_err(component->dev, "Failed to change default settings\n");
494 goto err_enable;
495 }
496
497 ret = wm8741_add_controls(component);
498 if (ret < 0) {
499 dev_err(component->dev, "Failed to add controls\n");
500 goto err_enable;
501 }
502
503 dev_dbg(component->dev, "Successful registration\n");
504 return ret;
505
506 err_enable:
507 regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies);
508 err_get:
509 return ret;
510 }
511
512 static void wm8741_remove(struct snd_soc_component *component)
513 {
514 struct wm8741_priv *wm8741 = snd_soc_component_get_drvdata(component);
515
516 regulator_bulk_disable(ARRAY_SIZE(wm8741->supplies), wm8741->supplies);
517 }
518
519 static const struct snd_soc_component_driver soc_component_dev_wm8741 = {
520 .probe = wm8741_probe,
521 .remove = wm8741_remove,
522 .resume = wm8741_resume,
523 .dapm_widgets = wm8741_dapm_widgets,
524 .num_dapm_widgets = ARRAY_SIZE(wm8741_dapm_widgets),
525 .dapm_routes = wm8741_dapm_routes,
526 .num_dapm_routes = ARRAY_SIZE(wm8741_dapm_routes),
527 .idle_bias_on = 1,
528 .use_pmdown_time = 1,
529 .endianness = 1,
530 .non_legacy_dai_naming = 1,
531 };
532
533 static const struct of_device_id wm8741_of_match[] = {
534 { .compatible = "wlf,wm8741", },
535 { }
536 };
537 MODULE_DEVICE_TABLE(of, wm8741_of_match);
538
539 static const struct regmap_config wm8741_regmap = {
540 .reg_bits = 7,
541 .val_bits = 9,
542 .max_register = WM8741_MAX_REGISTER,
543
544 .reg_defaults = wm8741_reg_defaults,
545 .num_reg_defaults = ARRAY_SIZE(wm8741_reg_defaults),
546 .cache_type = REGCACHE_RBTREE,
547 };
548
549 static int wm8741_set_pdata(struct device *dev, struct wm8741_priv *wm8741)
550 {
551 const struct wm8741_platform_data *pdata = dev_get_platdata(dev);
552 u32 diff_mode;
553
554 if (dev->of_node) {
555 if (of_property_read_u32(dev->of_node, "diff-mode", &diff_mode)
556 >= 0)
557 wm8741->pdata.diff_mode = diff_mode;
558 } else {
559 if (pdata != NULL)
560 memcpy(&wm8741->pdata, pdata, sizeof(wm8741->pdata));
561 }
562
563 return 0;
564 }
565
566 #if IS_ENABLED(CONFIG_I2C)
567 static int wm8741_i2c_probe(struct i2c_client *i2c,
568 const struct i2c_device_id *id)
569 {
570 struct wm8741_priv *wm8741;
571 int ret, i;
572
573 wm8741 = devm_kzalloc(&i2c->dev, sizeof(struct wm8741_priv),
574 GFP_KERNEL);
575 if (wm8741 == NULL)
576 return -ENOMEM;
577
578 for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++)
579 wm8741->supplies[i].supply = wm8741_supply_names[i];
580
581 ret = devm_regulator_bulk_get(&i2c->dev, ARRAY_SIZE(wm8741->supplies),
582 wm8741->supplies);
583 if (ret != 0) {
584 dev_err(&i2c->dev, "Failed to request supplies: %d\n", ret);
585 return ret;
586 }
587
588 wm8741->regmap = devm_regmap_init_i2c(i2c, &wm8741_regmap);
589 if (IS_ERR(wm8741->regmap)) {
590 ret = PTR_ERR(wm8741->regmap);
591 dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
592 return ret;
593 }
594
595 ret = wm8741_set_pdata(&i2c->dev, wm8741);
596 if (ret != 0) {
597 dev_err(&i2c->dev, "Failed to set pdata: %d\n", ret);
598 return ret;
599 }
600
601 i2c_set_clientdata(i2c, wm8741);
602
603 ret = devm_snd_soc_register_component(&i2c->dev,
604 &soc_component_dev_wm8741, &wm8741_dai, 1);
605
606 return ret;
607 }
608
609 static const struct i2c_device_id wm8741_i2c_id[] = {
610 { "wm8741", 0 },
611 { }
612 };
613 MODULE_DEVICE_TABLE(i2c, wm8741_i2c_id);
614
615 static struct i2c_driver wm8741_i2c_driver = {
616 .driver = {
617 .name = "wm8741",
618 .of_match_table = wm8741_of_match,
619 },
620 .probe = wm8741_i2c_probe,
621 .id_table = wm8741_i2c_id,
622 };
623 #endif
624
625 #if defined(CONFIG_SPI_MASTER)
626 static int wm8741_spi_probe(struct spi_device *spi)
627 {
628 struct wm8741_priv *wm8741;
629 int ret, i;
630
631 wm8741 = devm_kzalloc(&spi->dev, sizeof(struct wm8741_priv),
632 GFP_KERNEL);
633 if (wm8741 == NULL)
634 return -ENOMEM;
635
636 for (i = 0; i < ARRAY_SIZE(wm8741->supplies); i++)
637 wm8741->supplies[i].supply = wm8741_supply_names[i];
638
639 ret = devm_regulator_bulk_get(&spi->dev, ARRAY_SIZE(wm8741->supplies),
640 wm8741->supplies);
641 if (ret != 0) {
642 dev_err(&spi->dev, "Failed to request supplies: %d\n", ret);
643 return ret;
644 }
645
646 wm8741->regmap = devm_regmap_init_spi(spi, &wm8741_regmap);
647 if (IS_ERR(wm8741->regmap)) {
648 ret = PTR_ERR(wm8741->regmap);
649 dev_err(&spi->dev, "Failed to init regmap: %d\n", ret);
650 return ret;
651 }
652
653 ret = wm8741_set_pdata(&spi->dev, wm8741);
654 if (ret != 0) {
655 dev_err(&spi->dev, "Failed to set pdata: %d\n", ret);
656 return ret;
657 }
658
659 spi_set_drvdata(spi, wm8741);
660
661 ret = devm_snd_soc_register_component(&spi->dev,
662 &soc_component_dev_wm8741, &wm8741_dai, 1);
663 return ret;
664 }
665
666 static struct spi_driver wm8741_spi_driver = {
667 .driver = {
668 .name = "wm8741",
669 .of_match_table = wm8741_of_match,
670 },
671 .probe = wm8741_spi_probe,
672 };
673 #endif
674
675 static int __init wm8741_modinit(void)
676 {
677 int ret = 0;
678
679 #if IS_ENABLED(CONFIG_I2C)
680 ret = i2c_add_driver(&wm8741_i2c_driver);
681 if (ret != 0)
682 pr_err("Failed to register WM8741 I2C driver: %d\n", ret);
683 #endif
684 #if defined(CONFIG_SPI_MASTER)
685 ret = spi_register_driver(&wm8741_spi_driver);
686 if (ret != 0) {
687 printk(KERN_ERR "Failed to register wm8741 SPI driver: %d\n",
688 ret);
689 }
690 #endif
691
692 return ret;
693 }
694 module_init(wm8741_modinit);
695
696 static void __exit wm8741_exit(void)
697 {
698 #if defined(CONFIG_SPI_MASTER)
699 spi_unregister_driver(&wm8741_spi_driver);
700 #endif
701 #if IS_ENABLED(CONFIG_I2C)
702 i2c_del_driver(&wm8741_i2c_driver);
703 #endif
704 }
705 module_exit(wm8741_exit);
706
707 MODULE_DESCRIPTION("ASoC WM8741 driver");
708 MODULE_AUTHOR("Ian Lartey <ian@opensource.wolfsonmicro.com>");
709 MODULE_LICENSE("GPL");