1 /*
2 * wm8510.c -- WM8510 ALSA Soc Audio driver
3 *
4 * Copyright 2006 Wolfson Microelectronics PLC.
5 *
6 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
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/kernel.h>
16 #include <linux/init.h>
17 #include <linux/delay.h>
18 #include <linux/pm.h>
19 #include <linux/i2c.h>
20 #include <linux/spi/spi.h>
21 #include <linux/slab.h>
22 #include <linux/of_device.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
29 #include "wm8510.h"
30
31 /*
32 * wm8510 register cache
33 * We can't read the WM8510 register space when we are
34 * using 2 wire for device control, so we cache them instead.
35 */
36 static const u16 wm8510_reg[WM8510_CACHEREGNUM] = {
37 0x0000, 0x0000, 0x0000, 0x0000,
38 0x0050, 0x0000, 0x0140, 0x0000,
39 0x0000, 0x0000, 0x0000, 0x00ff,
40 0x0000, 0x0000, 0x0100, 0x00ff,
41 0x0000, 0x0000, 0x012c, 0x002c,
42 0x002c, 0x002c, 0x002c, 0x0000,
43 0x0032, 0x0000, 0x0000, 0x0000,
44 0x0000, 0x0000, 0x0000, 0x0000,
45 0x0038, 0x000b, 0x0032, 0x0000,
46 0x0008, 0x000c, 0x0093, 0x00e9,
47 0x0000, 0x0000, 0x0000, 0x0000,
48 0x0003, 0x0010, 0x0000, 0x0000,
49 0x0000, 0x0002, 0x0001, 0x0000,
50 0x0000, 0x0000, 0x0039, 0x0000,
51 0x0001,
52 };
53
54 #define WM8510_POWER1_BIASEN 0x08
55 #define WM8510_POWER1_BUFIOEN 0x10
56
57 #define wm8510_reset(c) snd_soc_write(c, WM8510_RESET, 0)
58
59 /* codec private data */
60 struct wm8510_priv {
61 enum snd_soc_control_type control_type;
62 };
63
64 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };
65 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
66 static const char *wm8510_alc[] = { "ALC", "Limiter" };
67
68 static const struct soc_enum wm8510_enum[] = {
69 SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */
70 SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */
71 SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp),
72 SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc),
73 };
74
75 static const struct snd_kcontrol_new wm8510_snd_controls[] = {
76
77 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),
78
79 SOC_ENUM("DAC Companding", wm8510_enum[1]),
80 SOC_ENUM("ADC Companding", wm8510_enum[0]),
81
82 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),
83 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),
84
85 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),
86
87 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),
88 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),
89 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),
90
91 SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0),
92
93 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0),
94 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0),
95 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0),
96
97 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0),
98 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0),
99
100 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0),
101 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0),
102 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0),
103
104 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0),
105 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0),
106 SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0),
107
108 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),
109 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0),
110 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0),
111
112 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0),
113 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0),
114
115 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0),
116 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0),
117
118 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0),
119 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1),
120 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0),
121 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),
122
123 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0),
124 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),
125 };
126
127 /* Speaker Output Mixer */
128 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {
129 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),
130 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),
131 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),
132 };
133
134 /* Mono Output Mixer */
135 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {
136 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),
137 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),
138 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),
139 };
140
141 static const struct snd_kcontrol_new wm8510_boost_controls[] = {
142 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1),
143 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),
144 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),
145 };
146
147 static const struct snd_kcontrol_new wm8510_micpga_controls[] = {
148 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),
149 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),
150 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),
151 };
152
153 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {
154 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,
155 &wm8510_speaker_mixer_controls[0],
156 ARRAY_SIZE(wm8510_speaker_mixer_controls)),
157 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,
158 &wm8510_mono_mixer_controls[0],
159 ARRAY_SIZE(wm8510_mono_mixer_controls)),
160 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),
161 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),
162 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),
163 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),
164 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),
165 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),
166
167 SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0,
168 &wm8510_micpga_controls[0],
169 ARRAY_SIZE(wm8510_micpga_controls)),
170 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,
171 &wm8510_boost_controls[0],
172 ARRAY_SIZE(wm8510_boost_controls)),
173
174 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),
175
176 SND_SOC_DAPM_INPUT("MICN"),
177 SND_SOC_DAPM_INPUT("MICP"),
178 SND_SOC_DAPM_INPUT("AUX"),
179 SND_SOC_DAPM_OUTPUT("MONOOUT"),
180 SND_SOC_DAPM_OUTPUT("SPKOUTP"),
181 SND_SOC_DAPM_OUTPUT("SPKOUTN"),
182 };
183
184 static const struct snd_soc_dapm_route wm8510_dapm_routes[] = {
185 /* Mono output mixer */
186 {"Mono Mixer", "PCM Playback Switch", "DAC"},
187 {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
188 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
189
190 /* Speaker output mixer */
191 {"Speaker Mixer", "PCM Playback Switch", "DAC"},
192 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
193 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
194
195 /* Outputs */
196 {"Mono Out", NULL, "Mono Mixer"},
197 {"MONOOUT", NULL, "Mono Out"},
198 {"SpkN Out", NULL, "Speaker Mixer"},
199 {"SpkP Out", NULL, "Speaker Mixer"},
200 {"SPKOUTN", NULL, "SpkN Out"},
201 {"SPKOUTP", NULL, "SpkP Out"},
202
203 /* Microphone PGA */
204 {"Mic PGA", "MICN Switch", "MICN"},
205 {"Mic PGA", "MICP Switch", "MICP"},
206 { "Mic PGA", "AUX Switch", "Aux Input" },
207
208 /* Boost Mixer */
209 {"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
210 {"Boost Mixer", "Mic Volume", "MICP"},
211 {"Boost Mixer", "Aux Volume", "Aux Input"},
212
213 {"ADC", NULL, "Boost Mixer"},
214 };
215
216 struct pll_ {
217 unsigned int pre_div:4; /* prescale - 1 */
218 unsigned int n:4;
219 unsigned int k;
220 };
221
222 static struct pll_ pll_div;
223
224 /* The size in bits of the pll divide multiplied by 10
225 * to allow rounding later */
226 #define FIXED_PLL_SIZE ((1 << 24) * 10)
227
pll_factors(unsigned int target,unsigned int source)228 static void pll_factors(unsigned int target, unsigned int source)
229 {
230 unsigned long long Kpart;
231 unsigned int K, Ndiv, Nmod;
232
233 Ndiv = target / source;
234 if (Ndiv < 6) {
235 source >>= 1;
236 pll_div.pre_div = 1;
237 Ndiv = target / source;
238 } else
239 pll_div.pre_div = 0;
240
241 if ((Ndiv < 6) || (Ndiv > 12))
242 printk(KERN_WARNING
243 "WM8510 N value %u outwith recommended range!d\n",
244 Ndiv);
245
246 pll_div.n = Ndiv;
247 Nmod = target % source;
248 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
249
250 do_div(Kpart, source);
251
252 K = Kpart & 0xFFFFFFFF;
253
254 /* Check if we need to round */
255 if ((K % 10) >= 5)
256 K += 5;
257
258 /* Move down to proper range now rounding is done */
259 K /= 10;
260
261 pll_div.k = K;
262 }
263
wm8510_set_dai_pll(struct snd_soc_dai * codec_dai,int pll_id,int source,unsigned int freq_in,unsigned int freq_out)264 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
265 int source, unsigned int freq_in, unsigned int freq_out)
266 {
267 struct snd_soc_codec *codec = codec_dai->codec;
268 u16 reg;
269
270 if (freq_in == 0 || freq_out == 0) {
271 /* Clock CODEC directly from MCLK */
272 reg = snd_soc_read(codec, WM8510_CLOCK);
273 snd_soc_write(codec, WM8510_CLOCK, reg & 0x0ff);
274
275 /* Turn off PLL */
276 reg = snd_soc_read(codec, WM8510_POWER1);
277 snd_soc_write(codec, WM8510_POWER1, reg & 0x1df);
278 return 0;
279 }
280
281 pll_factors(freq_out*4, freq_in);
282
283 snd_soc_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);
284 snd_soc_write(codec, WM8510_PLLK1, pll_div.k >> 18);
285 snd_soc_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);
286 snd_soc_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff);
287 reg = snd_soc_read(codec, WM8510_POWER1);
288 snd_soc_write(codec, WM8510_POWER1, reg | 0x020);
289
290 /* Run CODEC from PLL instead of MCLK */
291 reg = snd_soc_read(codec, WM8510_CLOCK);
292 snd_soc_write(codec, WM8510_CLOCK, reg | 0x100);
293
294 return 0;
295 }
296
297 /*
298 * Configure WM8510 clock dividers.
299 */
wm8510_set_dai_clkdiv(struct snd_soc_dai * codec_dai,int div_id,int div)300 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
301 int div_id, int div)
302 {
303 struct snd_soc_codec *codec = codec_dai->codec;
304 u16 reg;
305
306 switch (div_id) {
307 case WM8510_OPCLKDIV:
308 reg = snd_soc_read(codec, WM8510_GPIO) & 0x1cf;
309 snd_soc_write(codec, WM8510_GPIO, reg | div);
310 break;
311 case WM8510_MCLKDIV:
312 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x11f;
313 snd_soc_write(codec, WM8510_CLOCK, reg | div);
314 break;
315 case WM8510_ADCCLK:
316 reg = snd_soc_read(codec, WM8510_ADC) & 0x1f7;
317 snd_soc_write(codec, WM8510_ADC, reg | div);
318 break;
319 case WM8510_DACCLK:
320 reg = snd_soc_read(codec, WM8510_DAC) & 0x1f7;
321 snd_soc_write(codec, WM8510_DAC, reg | div);
322 break;
323 case WM8510_BCLKDIV:
324 reg = snd_soc_read(codec, WM8510_CLOCK) & 0x1e3;
325 snd_soc_write(codec, WM8510_CLOCK, reg | div);
326 break;
327 default:
328 return -EINVAL;
329 }
330
331 return 0;
332 }
333
wm8510_set_dai_fmt(struct snd_soc_dai * codec_dai,unsigned int fmt)334 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai,
335 unsigned int fmt)
336 {
337 struct snd_soc_codec *codec = codec_dai->codec;
338 u16 iface = 0;
339 u16 clk = snd_soc_read(codec, WM8510_CLOCK) & 0x1fe;
340
341 /* set master/slave audio interface */
342 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
343 case SND_SOC_DAIFMT_CBM_CFM:
344 clk |= 0x0001;
345 break;
346 case SND_SOC_DAIFMT_CBS_CFS:
347 break;
348 default:
349 return -EINVAL;
350 }
351
352 /* interface format */
353 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
354 case SND_SOC_DAIFMT_I2S:
355 iface |= 0x0010;
356 break;
357 case SND_SOC_DAIFMT_RIGHT_J:
358 break;
359 case SND_SOC_DAIFMT_LEFT_J:
360 iface |= 0x0008;
361 break;
362 case SND_SOC_DAIFMT_DSP_A:
363 iface |= 0x00018;
364 break;
365 default:
366 return -EINVAL;
367 }
368
369 /* clock inversion */
370 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
371 case SND_SOC_DAIFMT_NB_NF:
372 break;
373 case SND_SOC_DAIFMT_IB_IF:
374 iface |= 0x0180;
375 break;
376 case SND_SOC_DAIFMT_IB_NF:
377 iface |= 0x0100;
378 break;
379 case SND_SOC_DAIFMT_NB_IF:
380 iface |= 0x0080;
381 break;
382 default:
383 return -EINVAL;
384 }
385
386 snd_soc_write(codec, WM8510_IFACE, iface);
387 snd_soc_write(codec, WM8510_CLOCK, clk);
388 return 0;
389 }
390
wm8510_pcm_hw_params(struct snd_pcm_substream * substream,struct snd_pcm_hw_params * params,struct snd_soc_dai * dai)391 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream,
392 struct snd_pcm_hw_params *params,
393 struct snd_soc_dai *dai)
394 {
395 struct snd_soc_pcm_runtime *rtd = substream->private_data;
396 struct snd_soc_codec *codec = rtd->codec;
397 u16 iface = snd_soc_read(codec, WM8510_IFACE) & 0x19f;
398 u16 adn = snd_soc_read(codec, WM8510_ADD) & 0x1f1;
399
400 /* bit size */
401 switch (params_format(params)) {
402 case SNDRV_PCM_FORMAT_S16_LE:
403 break;
404 case SNDRV_PCM_FORMAT_S20_3LE:
405 iface |= 0x0020;
406 break;
407 case SNDRV_PCM_FORMAT_S24_LE:
408 iface |= 0x0040;
409 break;
410 case SNDRV_PCM_FORMAT_S32_LE:
411 iface |= 0x0060;
412 break;
413 }
414
415 /* filter coefficient */
416 switch (params_rate(params)) {
417 case 8000:
418 adn |= 0x5 << 1;
419 break;
420 case 11025:
421 adn |= 0x4 << 1;
422 break;
423 case 16000:
424 adn |= 0x3 << 1;
425 break;
426 case 22050:
427 adn |= 0x2 << 1;
428 break;
429 case 32000:
430 adn |= 0x1 << 1;
431 break;
432 case 44100:
433 case 48000:
434 break;
435 }
436
437 snd_soc_write(codec, WM8510_IFACE, iface);
438 snd_soc_write(codec, WM8510_ADD, adn);
439 return 0;
440 }
441
wm8510_mute(struct snd_soc_dai * dai,int mute)442 static int wm8510_mute(struct snd_soc_dai *dai, int mute)
443 {
444 struct snd_soc_codec *codec = dai->codec;
445 u16 mute_reg = snd_soc_read(codec, WM8510_DAC) & 0xffbf;
446
447 if (mute)
448 snd_soc_write(codec, WM8510_DAC, mute_reg | 0x40);
449 else
450 snd_soc_write(codec, WM8510_DAC, mute_reg);
451 return 0;
452 }
453
454 /* liam need to make this lower power with dapm */
wm8510_set_bias_level(struct snd_soc_codec * codec,enum snd_soc_bias_level level)455 static int wm8510_set_bias_level(struct snd_soc_codec *codec,
456 enum snd_soc_bias_level level)
457 {
458 u16 power1 = snd_soc_read(codec, WM8510_POWER1) & ~0x3;
459
460 switch (level) {
461 case SND_SOC_BIAS_ON:
462 case SND_SOC_BIAS_PREPARE:
463 power1 |= 0x1; /* VMID 50k */
464 snd_soc_write(codec, WM8510_POWER1, power1);
465 break;
466
467 case SND_SOC_BIAS_STANDBY:
468 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN;
469
470 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
471 snd_soc_cache_sync(codec);
472
473 /* Initial cap charge at VMID 5k */
474 snd_soc_write(codec, WM8510_POWER1, power1 | 0x3);
475 mdelay(100);
476 }
477
478 power1 |= 0x2; /* VMID 500k */
479 snd_soc_write(codec, WM8510_POWER1, power1);
480 break;
481
482 case SND_SOC_BIAS_OFF:
483 snd_soc_write(codec, WM8510_POWER1, 0);
484 snd_soc_write(codec, WM8510_POWER2, 0);
485 snd_soc_write(codec, WM8510_POWER3, 0);
486 break;
487 }
488
489 codec->dapm.bias_level = level;
490 return 0;
491 }
492
493 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
494 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
495 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
496
497 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
498 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
499
500 static const struct snd_soc_dai_ops wm8510_dai_ops = {
501 .hw_params = wm8510_pcm_hw_params,
502 .digital_mute = wm8510_mute,
503 .set_fmt = wm8510_set_dai_fmt,
504 .set_clkdiv = wm8510_set_dai_clkdiv,
505 .set_pll = wm8510_set_dai_pll,
506 };
507
508 static struct snd_soc_dai_driver wm8510_dai = {
509 .name = "wm8510-hifi",
510 .playback = {
511 .stream_name = "Playback",
512 .channels_min = 2,
513 .channels_max = 2,
514 .rates = WM8510_RATES,
515 .formats = WM8510_FORMATS,},
516 .capture = {
517 .stream_name = "Capture",
518 .channels_min = 2,
519 .channels_max = 2,
520 .rates = WM8510_RATES,
521 .formats = WM8510_FORMATS,},
522 .ops = &wm8510_dai_ops,
523 .symmetric_rates = 1,
524 };
525
wm8510_suspend(struct snd_soc_codec * codec)526 static int wm8510_suspend(struct snd_soc_codec *codec)
527 {
528 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
529 return 0;
530 }
531
wm8510_resume(struct snd_soc_codec * codec)532 static int wm8510_resume(struct snd_soc_codec *codec)
533 {
534 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
535 return 0;
536 }
537
wm8510_probe(struct snd_soc_codec * codec)538 static int wm8510_probe(struct snd_soc_codec *codec)
539 {
540 struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec);
541 int ret;
542
543 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8510->control_type);
544 if (ret < 0) {
545 printk(KERN_ERR "wm8510: failed to set cache I/O: %d\n", ret);
546 return ret;
547 }
548
549 wm8510_reset(codec);
550
551 /* power on device */
552 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
553
554 return ret;
555 }
556
557 /* power down chip */
wm8510_remove(struct snd_soc_codec * codec)558 static int wm8510_remove(struct snd_soc_codec *codec)
559 {
560 struct wm8510_priv *wm8510 = snd_soc_codec_get_drvdata(codec);
561
562 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
563 kfree(wm8510);
564 return 0;
565 }
566
567 static struct snd_soc_codec_driver soc_codec_dev_wm8510 = {
568 .probe = wm8510_probe,
569 .remove = wm8510_remove,
570 .suspend = wm8510_suspend,
571 .resume = wm8510_resume,
572 .set_bias_level = wm8510_set_bias_level,
573 .reg_cache_size = ARRAY_SIZE(wm8510_reg),
574 .reg_word_size = sizeof(u16),
575 .reg_cache_default =wm8510_reg,
576
577 .controls = wm8510_snd_controls,
578 .num_controls = ARRAY_SIZE(wm8510_snd_controls),
579 .dapm_widgets = wm8510_dapm_widgets,
580 .num_dapm_widgets = ARRAY_SIZE(wm8510_dapm_widgets),
581 .dapm_routes = wm8510_dapm_routes,
582 .num_dapm_routes = ARRAY_SIZE(wm8510_dapm_routes),
583 };
584
585 static const struct of_device_id wm8510_of_match[] = {
586 { .compatible = "wlf,wm8510" },
587 { },
588 };
589
590 #if defined(CONFIG_SPI_MASTER)
wm8510_spi_probe(struct spi_device * spi)591 static int __devinit wm8510_spi_probe(struct spi_device *spi)
592 {
593 struct wm8510_priv *wm8510;
594 int ret;
595
596 wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL);
597 if (wm8510 == NULL)
598 return -ENOMEM;
599
600 wm8510->control_type = SND_SOC_SPI;
601 spi_set_drvdata(spi, wm8510);
602
603 ret = snd_soc_register_codec(&spi->dev,
604 &soc_codec_dev_wm8510, &wm8510_dai, 1);
605 if (ret < 0)
606 kfree(wm8510);
607 return ret;
608 }
609
wm8510_spi_remove(struct spi_device * spi)610 static int __devexit wm8510_spi_remove(struct spi_device *spi)
611 {
612 snd_soc_unregister_codec(&spi->dev);
613 return 0;
614 }
615
616 static struct spi_driver wm8510_spi_driver = {
617 .driver = {
618 .name = "wm8510",
619 .owner = THIS_MODULE,
620 .of_match_table = wm8510_of_match,
621 },
622 .probe = wm8510_spi_probe,
623 .remove = __devexit_p(wm8510_spi_remove),
624 };
625 #endif /* CONFIG_SPI_MASTER */
626
627 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
wm8510_i2c_probe(struct i2c_client * i2c,const struct i2c_device_id * id)628 static __devinit int wm8510_i2c_probe(struct i2c_client *i2c,
629 const struct i2c_device_id *id)
630 {
631 struct wm8510_priv *wm8510;
632 int ret;
633
634 wm8510 = kzalloc(sizeof(struct wm8510_priv), GFP_KERNEL);
635 if (wm8510 == NULL)
636 return -ENOMEM;
637
638 i2c_set_clientdata(i2c, wm8510);
639 wm8510->control_type = SND_SOC_I2C;
640
641 ret = snd_soc_register_codec(&i2c->dev,
642 &soc_codec_dev_wm8510, &wm8510_dai, 1);
643 if (ret < 0)
644 kfree(wm8510);
645 return ret;
646 }
647
wm8510_i2c_remove(struct i2c_client * client)648 static __devexit int wm8510_i2c_remove(struct i2c_client *client)
649 {
650 snd_soc_unregister_codec(&client->dev);
651 return 0;
652 }
653
654 static const struct i2c_device_id wm8510_i2c_id[] = {
655 { "wm8510", 0 },
656 { }
657 };
658 MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id);
659
660 static struct i2c_driver wm8510_i2c_driver = {
661 .driver = {
662 .name = "wm8510",
663 .owner = THIS_MODULE,
664 .of_match_table = wm8510_of_match,
665 },
666 .probe = wm8510_i2c_probe,
667 .remove = __devexit_p(wm8510_i2c_remove),
668 .id_table = wm8510_i2c_id,
669 };
670 #endif
671
wm8510_modinit(void)672 static int __init wm8510_modinit(void)
673 {
674 int ret = 0;
675 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
676 ret = i2c_add_driver(&wm8510_i2c_driver);
677 if (ret != 0) {
678 printk(KERN_ERR "Failed to register WM8510 I2C driver: %d\n",
679 ret);
680 }
681 #endif
682 #if defined(CONFIG_SPI_MASTER)
683 ret = spi_register_driver(&wm8510_spi_driver);
684 if (ret != 0) {
685 printk(KERN_ERR "Failed to register WM8510 SPI driver: %d\n",
686 ret);
687 }
688 #endif
689 return ret;
690 }
691 module_init(wm8510_modinit);
692
wm8510_exit(void)693 static void __exit wm8510_exit(void)
694 {
695 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
696 i2c_del_driver(&wm8510_i2c_driver);
697 #endif
698 #if defined(CONFIG_SPI_MASTER)
699 spi_unregister_driver(&wm8510_spi_driver);
700 #endif
701 }
702 module_exit(wm8510_exit);
703
704 MODULE_DESCRIPTION("ASoC WM8510 driver");
705 MODULE_AUTHOR("Liam Girdwood");
706 MODULE_LICENSE("GPL");
707