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1 | /* | |
2 | * wm8776.c -- WM8776 ALSA SoC Audio driver | |
3 | * | |
4 | * Copyright 2009-12 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 | * TODO: Input ALC/limiter support | |
13 | */ | |
14 | ||
15 | #include <linux/module.h> | |
16 | #include <linux/moduleparam.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/delay.h> | |
19 | #include <linux/pm.h> | |
20 | #include <linux/i2c.h> | |
21 | #include <linux/of_device.h> | |
22 | #include <linux/regmap.h> | |
23 | #include <linux/spi/spi.h> | |
24 | #include <linux/slab.h> | |
25 | #include <sound/core.h> | |
26 | #include <sound/pcm.h> | |
27 | #include <sound/pcm_params.h> | |
28 | #include <sound/soc.h> | |
29 | #include <sound/initval.h> | |
30 | #include <sound/tlv.h> | |
31 | ||
32 | #include "wm8776.h" | |
33 | ||
34 | enum wm8776_chip_type { | |
35 | WM8775 = 1, | |
36 | WM8776, | |
37 | }; | |
38 | ||
39 | /* codec private data */ | |
40 | struct wm8776_priv { | |
41 | struct regmap *regmap; | |
42 | int sysclk[2]; | |
43 | }; | |
44 | ||
45 | static const struct reg_default wm8776_reg_defaults[] = { | |
46 | { 0, 0x79 }, | |
47 | { 1, 0x79 }, | |
48 | { 2, 0x79 }, | |
49 | { 3, 0xff }, | |
50 | { 4, 0xff }, | |
51 | { 5, 0xff }, | |
52 | { 6, 0x00 }, | |
53 | { 7, 0x90 }, | |
54 | { 8, 0x00 }, | |
55 | { 9, 0x00 }, | |
56 | { 10, 0x22 }, | |
57 | { 11, 0x22 }, | |
58 | { 12, 0x22 }, | |
59 | { 13, 0x08 }, | |
60 | { 14, 0xcf }, | |
61 | { 15, 0xcf }, | |
62 | { 16, 0x7b }, | |
63 | { 17, 0x00 }, | |
64 | { 18, 0x32 }, | |
65 | { 19, 0x00 }, | |
66 | { 20, 0xa6 }, | |
67 | { 21, 0x01 }, | |
68 | { 22, 0x01 }, | |
69 | }; | |
70 | ||
71 | static bool wm8776_volatile(struct device *dev, unsigned int reg) | |
72 | { | |
73 | switch (reg) { | |
74 | case WM8776_RESET: | |
75 | return true; | |
76 | default: | |
77 | return false; | |
78 | } | |
79 | } | |
80 | ||
81 | static int wm8776_reset(struct snd_soc_codec *codec) | |
82 | { | |
83 | return snd_soc_write(codec, WM8776_RESET, 0); | |
84 | } | |
85 | ||
86 | static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1); | |
87 | static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); | |
88 | static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1); | |
89 | ||
90 | static const struct snd_kcontrol_new wm8776_snd_controls[] = { | |
91 | SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL, | |
92 | 0, 127, 0, hp_tlv), | |
93 | SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL, | |
94 | 0, 255, 0, dac_tlv), | |
95 | SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0), | |
96 | ||
97 | SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0), | |
98 | ||
99 | SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL, | |
100 | 0, 255, 0, adc_tlv), | |
101 | SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1), | |
102 | SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0), | |
103 | SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1), | |
104 | }; | |
105 | ||
106 | static const struct snd_kcontrol_new inmix_controls[] = { | |
107 | SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0), | |
108 | SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0), | |
109 | SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0), | |
110 | SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0), | |
111 | SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0), | |
112 | }; | |
113 | ||
114 | static const struct snd_kcontrol_new outmix_controls[] = { | |
115 | SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0), | |
116 | SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0), | |
117 | SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0), | |
118 | }; | |
119 | ||
120 | static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = { | |
121 | SND_SOC_DAPM_INPUT("AUX"), | |
122 | ||
123 | SND_SOC_DAPM_INPUT("AIN1"), | |
124 | SND_SOC_DAPM_INPUT("AIN2"), | |
125 | SND_SOC_DAPM_INPUT("AIN3"), | |
126 | SND_SOC_DAPM_INPUT("AIN4"), | |
127 | SND_SOC_DAPM_INPUT("AIN5"), | |
128 | ||
129 | SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1, | |
130 | inmix_controls, ARRAY_SIZE(inmix_controls)), | |
131 | ||
132 | SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1), | |
133 | SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1), | |
134 | ||
135 | SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, | |
136 | outmix_controls, ARRAY_SIZE(outmix_controls)), | |
137 | ||
138 | SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0), | |
139 | ||
140 | SND_SOC_DAPM_OUTPUT("VOUT"), | |
141 | ||
142 | SND_SOC_DAPM_OUTPUT("HPOUTL"), | |
143 | SND_SOC_DAPM_OUTPUT("HPOUTR"), | |
144 | }; | |
145 | ||
146 | static const struct snd_soc_dapm_route routes[] = { | |
147 | { "Input Mixer", "AIN1 Switch", "AIN1" }, | |
148 | { "Input Mixer", "AIN2 Switch", "AIN2" }, | |
149 | { "Input Mixer", "AIN3 Switch", "AIN3" }, | |
150 | { "Input Mixer", "AIN4 Switch", "AIN4" }, | |
151 | { "Input Mixer", "AIN5 Switch", "AIN5" }, | |
152 | ||
153 | { "ADC", NULL, "Input Mixer" }, | |
154 | ||
155 | { "Output Mixer", "DAC Switch", "DAC" }, | |
156 | { "Output Mixer", "AUX Switch", "AUX" }, | |
157 | { "Output Mixer", "Bypass Switch", "Input Mixer" }, | |
158 | ||
159 | { "VOUT", NULL, "Output Mixer" }, | |
160 | ||
161 | { "Headphone PGA", NULL, "Output Mixer" }, | |
162 | ||
163 | { "HPOUTL", NULL, "Headphone PGA" }, | |
164 | { "HPOUTR", NULL, "Headphone PGA" }, | |
165 | }; | |
166 | ||
167 | static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) | |
168 | { | |
169 | struct snd_soc_codec *codec = dai->codec; | |
170 | int reg, iface, master; | |
171 | ||
172 | switch (dai->driver->id) { | |
173 | case WM8776_DAI_DAC: | |
174 | reg = WM8776_DACIFCTRL; | |
175 | master = 0x80; | |
176 | break; | |
177 | case WM8776_DAI_ADC: | |
178 | reg = WM8776_ADCIFCTRL; | |
179 | master = 0x100; | |
180 | break; | |
181 | default: | |
182 | return -EINVAL; | |
183 | } | |
184 | ||
185 | iface = 0; | |
186 | ||
187 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { | |
188 | case SND_SOC_DAIFMT_CBM_CFM: | |
189 | break; | |
190 | case SND_SOC_DAIFMT_CBS_CFS: | |
191 | master = 0; | |
192 | break; | |
193 | default: | |
194 | return -EINVAL; | |
195 | } | |
196 | ||
197 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { | |
198 | case SND_SOC_DAIFMT_I2S: | |
199 | iface |= 0x0002; | |
200 | break; | |
201 | case SND_SOC_DAIFMT_RIGHT_J: | |
202 | break; | |
203 | case SND_SOC_DAIFMT_LEFT_J: | |
204 | iface |= 0x0001; | |
205 | break; | |
206 | default: | |
207 | return -EINVAL; | |
208 | } | |
209 | ||
210 | switch (fmt & SND_SOC_DAIFMT_INV_MASK) { | |
211 | case SND_SOC_DAIFMT_NB_NF: | |
212 | break; | |
213 | case SND_SOC_DAIFMT_IB_IF: | |
214 | iface |= 0x00c; | |
215 | break; | |
216 | case SND_SOC_DAIFMT_IB_NF: | |
217 | iface |= 0x008; | |
218 | break; | |
219 | case SND_SOC_DAIFMT_NB_IF: | |
220 | iface |= 0x004; | |
221 | break; | |
222 | default: | |
223 | return -EINVAL; | |
224 | } | |
225 | ||
226 | /* Finally, write out the values */ | |
227 | snd_soc_update_bits(codec, reg, 0xf, iface); | |
228 | snd_soc_update_bits(codec, WM8776_MSTRCTRL, 0x180, master); | |
229 | ||
230 | return 0; | |
231 | } | |
232 | ||
233 | static int mclk_ratios[] = { | |
234 | 128, | |
235 | 192, | |
236 | 256, | |
237 | 384, | |
238 | 512, | |
239 | 768, | |
240 | }; | |
241 | ||
242 | static int wm8776_hw_params(struct snd_pcm_substream *substream, | |
243 | struct snd_pcm_hw_params *params, | |
244 | struct snd_soc_dai *dai) | |
245 | { | |
246 | struct snd_soc_codec *codec = dai->codec; | |
247 | struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec); | |
248 | int iface_reg, iface; | |
249 | int ratio_shift, master; | |
250 | int i; | |
251 | ||
252 | switch (dai->driver->id) { | |
253 | case WM8776_DAI_DAC: | |
254 | iface_reg = WM8776_DACIFCTRL; | |
255 | master = 0x80; | |
256 | ratio_shift = 4; | |
257 | break; | |
258 | case WM8776_DAI_ADC: | |
259 | iface_reg = WM8776_ADCIFCTRL; | |
260 | master = 0x100; | |
261 | ratio_shift = 0; | |
262 | break; | |
263 | default: | |
264 | return -EINVAL; | |
265 | } | |
266 | ||
267 | /* Set word length */ | |
268 | switch (snd_pcm_format_width(params_format(params))) { | |
269 | case 16: | |
270 | iface = 0; | |
271 | break; | |
272 | case 20: | |
273 | iface = 0x10; | |
274 | break; | |
275 | case 24: | |
276 | iface = 0x20; | |
277 | break; | |
278 | case 32: | |
279 | iface = 0x30; | |
280 | break; | |
281 | default: | |
282 | dev_err(codec->dev, "Unsupported sample size: %i\n", | |
283 | snd_pcm_format_width(params_format(params))); | |
284 | return -EINVAL; | |
285 | } | |
286 | ||
287 | /* Only need to set MCLK/LRCLK ratio if we're master */ | |
288 | if (snd_soc_read(codec, WM8776_MSTRCTRL) & master) { | |
289 | for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) { | |
290 | if (wm8776->sysclk[dai->driver->id] / params_rate(params) | |
291 | == mclk_ratios[i]) | |
292 | break; | |
293 | } | |
294 | ||
295 | if (i == ARRAY_SIZE(mclk_ratios)) { | |
296 | dev_err(codec->dev, | |
297 | "Unable to configure MCLK ratio %d/%d\n", | |
298 | wm8776->sysclk[dai->driver->id], params_rate(params)); | |
299 | return -EINVAL; | |
300 | } | |
301 | ||
302 | dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]); | |
303 | ||
304 | snd_soc_update_bits(codec, WM8776_MSTRCTRL, | |
305 | 0x7 << ratio_shift, i << ratio_shift); | |
306 | } else { | |
307 | dev_dbg(codec->dev, "DAI in slave mode\n"); | |
308 | } | |
309 | ||
310 | snd_soc_update_bits(codec, iface_reg, 0x30, iface); | |
311 | ||
312 | return 0; | |
313 | } | |
314 | ||
315 | static int wm8776_mute(struct snd_soc_dai *dai, int mute) | |
316 | { | |
317 | struct snd_soc_codec *codec = dai->codec; | |
318 | ||
319 | return snd_soc_write(codec, WM8776_DACMUTE, !!mute); | |
320 | } | |
321 | ||
322 | static int wm8776_set_sysclk(struct snd_soc_dai *dai, | |
323 | int clk_id, unsigned int freq, int dir) | |
324 | { | |
325 | struct snd_soc_codec *codec = dai->codec; | |
326 | struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec); | |
327 | ||
328 | BUG_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk)); | |
329 | ||
330 | wm8776->sysclk[dai->driver->id] = freq; | |
331 | ||
332 | return 0; | |
333 | } | |
334 | ||
335 | static int wm8776_set_bias_level(struct snd_soc_codec *codec, | |
336 | enum snd_soc_bias_level level) | |
337 | { | |
338 | struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec); | |
339 | ||
340 | switch (level) { | |
341 | case SND_SOC_BIAS_ON: | |
342 | break; | |
343 | case SND_SOC_BIAS_PREPARE: | |
344 | break; | |
345 | case SND_SOC_BIAS_STANDBY: | |
346 | if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { | |
347 | regcache_sync(wm8776->regmap); | |
348 | ||
349 | /* Disable the global powerdown; DAPM does the rest */ | |
350 | snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 0); | |
351 | } | |
352 | ||
353 | break; | |
354 | case SND_SOC_BIAS_OFF: | |
355 | snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 1); | |
356 | break; | |
357 | } | |
358 | ||
359 | codec->dapm.bias_level = level; | |
360 | return 0; | |
361 | } | |
362 | ||
363 | #define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ | |
364 | SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) | |
365 | ||
366 | static const struct snd_soc_dai_ops wm8776_dac_ops = { | |
367 | .digital_mute = wm8776_mute, | |
368 | .hw_params = wm8776_hw_params, | |
369 | .set_fmt = wm8776_set_fmt, | |
370 | .set_sysclk = wm8776_set_sysclk, | |
371 | }; | |
372 | ||
373 | static const struct snd_soc_dai_ops wm8776_adc_ops = { | |
374 | .hw_params = wm8776_hw_params, | |
375 | .set_fmt = wm8776_set_fmt, | |
376 | .set_sysclk = wm8776_set_sysclk, | |
377 | }; | |
378 | ||
379 | static struct snd_soc_dai_driver wm8776_dai[] = { | |
380 | { | |
381 | .name = "wm8776-hifi-playback", | |
382 | .id = WM8776_DAI_DAC, | |
383 | .playback = { | |
384 | .stream_name = "Playback", | |
385 | .channels_min = 2, | |
386 | .channels_max = 2, | |
387 | .rates = SNDRV_PCM_RATE_CONTINUOUS, | |
388 | .rate_min = 32000, | |
389 | .rate_max = 192000, | |
390 | .formats = WM8776_FORMATS, | |
391 | }, | |
392 | .ops = &wm8776_dac_ops, | |
393 | }, | |
394 | { | |
395 | .name = "wm8776-hifi-capture", | |
396 | .id = WM8776_DAI_ADC, | |
397 | .capture = { | |
398 | .stream_name = "Capture", | |
399 | .channels_min = 2, | |
400 | .channels_max = 2, | |
401 | .rates = SNDRV_PCM_RATE_CONTINUOUS, | |
402 | .rate_min = 32000, | |
403 | .rate_max = 96000, | |
404 | .formats = WM8776_FORMATS, | |
405 | }, | |
406 | .ops = &wm8776_adc_ops, | |
407 | }, | |
408 | }; | |
409 | ||
410 | #ifdef CONFIG_PM | |
411 | static int wm8776_suspend(struct snd_soc_codec *codec) | |
412 | { | |
413 | wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
414 | ||
415 | return 0; | |
416 | } | |
417 | ||
418 | static int wm8776_resume(struct snd_soc_codec *codec) | |
419 | { | |
420 | wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
421 | return 0; | |
422 | } | |
423 | #else | |
424 | #define wm8776_suspend NULL | |
425 | #define wm8776_resume NULL | |
426 | #endif | |
427 | ||
428 | static int wm8776_probe(struct snd_soc_codec *codec) | |
429 | { | |
430 | int ret = 0; | |
431 | ||
432 | ret = snd_soc_codec_set_cache_io(codec, 7, 9, SND_SOC_REGMAP); | |
433 | if (ret < 0) { | |
434 | dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); | |
435 | return ret; | |
436 | } | |
437 | ||
438 | ret = wm8776_reset(codec); | |
439 | if (ret < 0) { | |
440 | dev_err(codec->dev, "Failed to issue reset: %d\n", ret); | |
441 | return ret; | |
442 | } | |
443 | ||
444 | wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY); | |
445 | ||
446 | /* Latch the update bits; right channel only since we always | |
447 | * update both. */ | |
448 | snd_soc_update_bits(codec, WM8776_HPRVOL, 0x100, 0x100); | |
449 | snd_soc_update_bits(codec, WM8776_DACRVOL, 0x100, 0x100); | |
450 | ||
451 | return ret; | |
452 | } | |
453 | ||
454 | /* power down chip */ | |
455 | static int wm8776_remove(struct snd_soc_codec *codec) | |
456 | { | |
457 | wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF); | |
458 | return 0; | |
459 | } | |
460 | ||
461 | static struct snd_soc_codec_driver soc_codec_dev_wm8776 = { | |
462 | .probe = wm8776_probe, | |
463 | .remove = wm8776_remove, | |
464 | .suspend = wm8776_suspend, | |
465 | .resume = wm8776_resume, | |
466 | .set_bias_level = wm8776_set_bias_level, | |
467 | ||
468 | .controls = wm8776_snd_controls, | |
469 | .num_controls = ARRAY_SIZE(wm8776_snd_controls), | |
470 | .dapm_widgets = wm8776_dapm_widgets, | |
471 | .num_dapm_widgets = ARRAY_SIZE(wm8776_dapm_widgets), | |
472 | .dapm_routes = routes, | |
473 | .num_dapm_routes = ARRAY_SIZE(routes), | |
474 | }; | |
475 | ||
476 | static const struct of_device_id wm8776_of_match[] = { | |
477 | { .compatible = "wlf,wm8776", }, | |
478 | { } | |
479 | }; | |
480 | MODULE_DEVICE_TABLE(of, wm8776_of_match); | |
481 | ||
482 | static const struct regmap_config wm8776_regmap = { | |
483 | .reg_bits = 7, | |
484 | .val_bits = 9, | |
485 | .max_register = WM8776_RESET, | |
486 | ||
487 | .reg_defaults = wm8776_reg_defaults, | |
488 | .num_reg_defaults = ARRAY_SIZE(wm8776_reg_defaults), | |
489 | .cache_type = REGCACHE_RBTREE, | |
490 | ||
491 | .volatile_reg = wm8776_volatile, | |
492 | }; | |
493 | ||
494 | #if defined(CONFIG_SPI_MASTER) | |
495 | static int wm8776_spi_probe(struct spi_device *spi) | |
496 | { | |
497 | struct wm8776_priv *wm8776; | |
498 | int ret; | |
499 | ||
500 | wm8776 = devm_kzalloc(&spi->dev, sizeof(struct wm8776_priv), | |
501 | GFP_KERNEL); | |
502 | if (wm8776 == NULL) | |
503 | return -ENOMEM; | |
504 | ||
505 | wm8776->regmap = devm_regmap_init_spi(spi, &wm8776_regmap); | |
506 | if (IS_ERR(wm8776->regmap)) | |
507 | return PTR_ERR(wm8776->regmap); | |
508 | ||
509 | spi_set_drvdata(spi, wm8776); | |
510 | ||
511 | ret = snd_soc_register_codec(&spi->dev, | |
512 | &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai)); | |
513 | ||
514 | return ret; | |
515 | } | |
516 | ||
517 | static int wm8776_spi_remove(struct spi_device *spi) | |
518 | { | |
519 | snd_soc_unregister_codec(&spi->dev); | |
520 | return 0; | |
521 | } | |
522 | ||
523 | static struct spi_driver wm8776_spi_driver = { | |
524 | .driver = { | |
525 | .name = "wm8776", | |
526 | .owner = THIS_MODULE, | |
527 | .of_match_table = wm8776_of_match, | |
528 | }, | |
529 | .probe = wm8776_spi_probe, | |
530 | .remove = wm8776_spi_remove, | |
531 | }; | |
532 | #endif /* CONFIG_SPI_MASTER */ | |
533 | ||
534 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
535 | static int wm8776_i2c_probe(struct i2c_client *i2c, | |
536 | const struct i2c_device_id *id) | |
537 | { | |
538 | struct wm8776_priv *wm8776; | |
539 | int ret; | |
540 | ||
541 | wm8776 = devm_kzalloc(&i2c->dev, sizeof(struct wm8776_priv), | |
542 | GFP_KERNEL); | |
543 | if (wm8776 == NULL) | |
544 | return -ENOMEM; | |
545 | ||
546 | wm8776->regmap = devm_regmap_init_i2c(i2c, &wm8776_regmap); | |
547 | if (IS_ERR(wm8776->regmap)) | |
548 | return PTR_ERR(wm8776->regmap); | |
549 | ||
550 | i2c_set_clientdata(i2c, wm8776); | |
551 | ||
552 | ret = snd_soc_register_codec(&i2c->dev, | |
553 | &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai)); | |
554 | ||
555 | return ret; | |
556 | } | |
557 | ||
558 | static int wm8776_i2c_remove(struct i2c_client *client) | |
559 | { | |
560 | snd_soc_unregister_codec(&client->dev); | |
561 | return 0; | |
562 | } | |
563 | ||
564 | static const struct i2c_device_id wm8776_i2c_id[] = { | |
565 | { "wm8775", WM8775 }, | |
566 | { "wm8776", WM8776 }, | |
567 | { } | |
568 | }; | |
569 | MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id); | |
570 | ||
571 | static struct i2c_driver wm8776_i2c_driver = { | |
572 | .driver = { | |
573 | .name = "wm8776", | |
574 | .owner = THIS_MODULE, | |
575 | .of_match_table = wm8776_of_match, | |
576 | }, | |
577 | .probe = wm8776_i2c_probe, | |
578 | .remove = wm8776_i2c_remove, | |
579 | .id_table = wm8776_i2c_id, | |
580 | }; | |
581 | #endif | |
582 | ||
583 | static int __init wm8776_modinit(void) | |
584 | { | |
585 | int ret = 0; | |
586 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
587 | ret = i2c_add_driver(&wm8776_i2c_driver); | |
588 | if (ret != 0) { | |
589 | printk(KERN_ERR "Failed to register wm8776 I2C driver: %d\n", | |
590 | ret); | |
591 | } | |
592 | #endif | |
593 | #if defined(CONFIG_SPI_MASTER) | |
594 | ret = spi_register_driver(&wm8776_spi_driver); | |
595 | if (ret != 0) { | |
596 | printk(KERN_ERR "Failed to register wm8776 SPI driver: %d\n", | |
597 | ret); | |
598 | } | |
599 | #endif | |
600 | return ret; | |
601 | } | |
602 | module_init(wm8776_modinit); | |
603 | ||
604 | static void __exit wm8776_exit(void) | |
605 | { | |
606 | #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) | |
607 | i2c_del_driver(&wm8776_i2c_driver); | |
608 | #endif | |
609 | #if defined(CONFIG_SPI_MASTER) | |
610 | spi_unregister_driver(&wm8776_spi_driver); | |
611 | #endif | |
612 | } | |
613 | module_exit(wm8776_exit); | |
614 | ||
615 | MODULE_DESCRIPTION("ASoC WM8776 driver"); | |
616 | MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>"); | |
617 | MODULE_LICENSE("GPL"); |