2 * wm8510.c -- WM8510 ALSA Soc Audio driver
4 * Copyright 2006 Wolfson Microelectronics PLC.
6 * Author: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
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.
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>
19 #include <linux/i2c.h>
20 #include <linux/platform_device.h>
21 #include <linux/spi/spi.h>
22 #include <sound/core.h>
23 #include <sound/pcm.h>
24 #include <sound/pcm_params.h>
25 #include <sound/soc.h>
26 #include <sound/soc-dapm.h>
27 #include <sound/initval.h>
31 #define AUDIO_NAME "wm8510"
32 #define WM8510_VERSION "0.6"
34 struct snd_soc_codec_device soc_codec_dev_wm8510;
37 * wm8510 register cache
38 * We can't read the WM8510 register space when we are
39 * using 2 wire for device control, so we cache them instead.
41 static const u16 wm8510_reg[WM8510_CACHEREGNUM] = {
42 0x0000, 0x0000, 0x0000, 0x0000,
43 0x0050, 0x0000, 0x0140, 0x0000,
44 0x0000, 0x0000, 0x0000, 0x00ff,
45 0x0000, 0x0000, 0x0100, 0x00ff,
46 0x0000, 0x0000, 0x012c, 0x002c,
47 0x002c, 0x002c, 0x002c, 0x0000,
48 0x0032, 0x0000, 0x0000, 0x0000,
49 0x0000, 0x0000, 0x0000, 0x0000,
50 0x0038, 0x000b, 0x0032, 0x0000,
51 0x0008, 0x000c, 0x0093, 0x00e9,
52 0x0000, 0x0000, 0x0000, 0x0000,
53 0x0003, 0x0010, 0x0000, 0x0000,
54 0x0000, 0x0002, 0x0001, 0x0000,
55 0x0000, 0x0000, 0x0039, 0x0000,
60 * read wm8510 register cache
62 static inline unsigned int wm8510_read_reg_cache(struct snd_soc_codec *codec,
65 u16 *cache = codec->reg_cache;
66 if (reg == WM8510_RESET)
68 if (reg >= WM8510_CACHEREGNUM)
74 * write wm8510 register cache
76 static inline void wm8510_write_reg_cache(struct snd_soc_codec *codec,
77 u16 reg, unsigned int value)
79 u16 *cache = codec->reg_cache;
80 if (reg >= WM8510_CACHEREGNUM)
86 * write to the WM8510 register space
88 static int wm8510_write(struct snd_soc_codec *codec, unsigned int reg,
94 * D15..D9 WM8510 register offset
95 * D8...D0 register data
97 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
98 data[1] = value & 0x00ff;
100 wm8510_write_reg_cache(codec, reg, value);
101 if (codec->hw_write(codec->control_data, data, 2) == 2)
107 #define wm8510_reset(c) wm8510_write(c, WM8510_RESET, 0)
109 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };
110 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
111 static const char *wm8510_alc[] = { "ALC", "Limiter" };
113 static const struct soc_enum wm8510_enum[] = {
114 SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */
115 SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */
116 SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp),
117 SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc),
120 static const struct snd_kcontrol_new wm8510_snd_controls[] = {
122 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),
124 SOC_ENUM("DAC Companding", wm8510_enum[1]),
125 SOC_ENUM("ADC Companding", wm8510_enum[0]),
127 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),
128 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),
130 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),
132 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),
133 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),
134 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),
136 SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0),
138 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0),
139 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0),
140 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0),
142 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0),
143 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0),
145 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0),
146 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0),
147 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0),
149 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0),
150 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0),
151 SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0),
153 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),
154 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0),
155 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0),
157 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0),
158 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0),
160 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0),
161 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0),
163 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0),
164 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1),
165 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0),
166 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),
168 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0),
169 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),
172 /* add non dapm controls */
173 static int wm8510_add_controls(struct snd_soc_codec *codec)
177 for (i = 0; i < ARRAY_SIZE(wm8510_snd_controls); i++) {
178 err = snd_ctl_add(codec->card,
179 snd_soc_cnew(&wm8510_snd_controls[i], codec,
188 /* Speaker Output Mixer */
189 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {
190 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),
191 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),
192 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),
195 /* Mono Output Mixer */
196 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {
197 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),
198 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),
199 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),
202 static const struct snd_kcontrol_new wm8510_boost_controls[] = {
203 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1),
204 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),
205 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),
208 static const struct snd_kcontrol_new wm8510_micpga_controls[] = {
209 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),
210 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),
211 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),
214 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {
215 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,
216 &wm8510_speaker_mixer_controls[0],
217 ARRAY_SIZE(wm8510_speaker_mixer_controls)),
218 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,
219 &wm8510_mono_mixer_controls[0],
220 ARRAY_SIZE(wm8510_mono_mixer_controls)),
221 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),
222 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),
223 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),
224 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),
225 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),
226 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),
228 SND_SOC_DAPM_PGA("Mic PGA", WM8510_POWER2, 2, 0,
229 &wm8510_micpga_controls[0],
230 ARRAY_SIZE(wm8510_micpga_controls)),
231 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,
232 &wm8510_boost_controls[0],
233 ARRAY_SIZE(wm8510_boost_controls)),
235 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),
237 SND_SOC_DAPM_INPUT("MICN"),
238 SND_SOC_DAPM_INPUT("MICP"),
239 SND_SOC_DAPM_INPUT("AUX"),
240 SND_SOC_DAPM_OUTPUT("MONOOUT"),
241 SND_SOC_DAPM_OUTPUT("SPKOUTP"),
242 SND_SOC_DAPM_OUTPUT("SPKOUTN"),
245 static const struct snd_soc_dapm_route audio_map[] = {
246 /* Mono output mixer */
247 {"Mono Mixer", "PCM Playback Switch", "DAC"},
248 {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
249 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
251 /* Speaker output mixer */
252 {"Speaker Mixer", "PCM Playback Switch", "DAC"},
253 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
254 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
257 {"Mono Out", NULL, "Mono Mixer"},
258 {"MONOOUT", NULL, "Mono Out"},
259 {"SpkN Out", NULL, "Speaker Mixer"},
260 {"SpkP Out", NULL, "Speaker Mixer"},
261 {"SPKOUTN", NULL, "SpkN Out"},
262 {"SPKOUTP", NULL, "SpkP Out"},
265 {"Mic PGA", "MICN Switch", "MICN"},
266 {"Mic PGA", "MICP Switch", "MICP"},
267 { "Mic PGA", "AUX Switch", "Aux Input" },
270 {"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
271 {"Boost Mixer", "Mic Volume", "MICP"},
272 {"Boost Mixer", "Aux Volume", "Aux Input"},
274 {"ADC", NULL, "Boost Mixer"},
277 static int wm8510_add_widgets(struct snd_soc_codec *codec)
279 snd_soc_dapm_new_controls(codec, wm8510_dapm_widgets,
280 ARRAY_SIZE(wm8510_dapm_widgets));
282 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
284 snd_soc_dapm_new_widgets(codec);
289 unsigned int pre_div:4; /* prescale - 1 */
294 static struct pll_ pll_div;
296 /* The size in bits of the pll divide multiplied by 10
297 * to allow rounding later */
298 #define FIXED_PLL_SIZE ((1 << 24) * 10)
300 static void pll_factors(unsigned int target, unsigned int source)
302 unsigned long long Kpart;
303 unsigned int K, Ndiv, Nmod;
305 Ndiv = target / source;
309 Ndiv = target / source;
313 if ((Ndiv < 6) || (Ndiv > 12))
315 "WM8510 N value %d outwith recommended range!d\n",
319 Nmod = target % source;
320 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
322 do_div(Kpart, source);
324 K = Kpart & 0xFFFFFFFF;
326 /* Check if we need to round */
330 /* Move down to proper range now rounding is done */
336 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai,
337 int pll_id, unsigned int freq_in, unsigned int freq_out)
339 struct snd_soc_codec *codec = codec_dai->codec;
342 if (freq_in == 0 || freq_out == 0) {
343 /* Clock CODEC directly from MCLK */
344 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
345 wm8510_write(codec, WM8510_CLOCK, reg & 0x0ff);
348 reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
349 wm8510_write(codec, WM8510_POWER1, reg & 0x1df);
353 pll_factors(freq_out*8, freq_in);
355 wm8510_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);
356 wm8510_write(codec, WM8510_PLLK1, pll_div.k >> 18);
357 wm8510_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);
358 wm8510_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff);
359 reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
360 wm8510_write(codec, WM8510_POWER1, reg | 0x020);
362 /* Run CODEC from PLL instead of MCLK */
363 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
364 wm8510_write(codec, WM8510_CLOCK, reg | 0x100);
370 * Configure WM8510 clock dividers.
372 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
375 struct snd_soc_codec *codec = codec_dai->codec;
379 case WM8510_OPCLKDIV:
380 reg = wm8510_read_reg_cache(codec, WM8510_GPIO) & 0x1cf;
381 wm8510_write(codec, WM8510_GPIO, reg | div);
384 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1f;
385 wm8510_write(codec, WM8510_CLOCK, reg | div);
388 reg = wm8510_read_reg_cache(codec, WM8510_ADC) & 0x1f7;
389 wm8510_write(codec, WM8510_ADC, reg | div);
392 reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0x1f7;
393 wm8510_write(codec, WM8510_DAC, reg | div);
396 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1e3;
397 wm8510_write(codec, WM8510_CLOCK, reg | div);
406 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai,
409 struct snd_soc_codec *codec = codec_dai->codec;
411 u16 clk = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1fe;
413 /* set master/slave audio interface */
414 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
415 case SND_SOC_DAIFMT_CBM_CFM:
418 case SND_SOC_DAIFMT_CBS_CFS:
424 /* interface format */
425 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
426 case SND_SOC_DAIFMT_I2S:
429 case SND_SOC_DAIFMT_RIGHT_J:
431 case SND_SOC_DAIFMT_LEFT_J:
434 case SND_SOC_DAIFMT_DSP_A:
441 /* clock inversion */
442 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
443 case SND_SOC_DAIFMT_NB_NF:
445 case SND_SOC_DAIFMT_IB_IF:
448 case SND_SOC_DAIFMT_IB_NF:
451 case SND_SOC_DAIFMT_NB_IF:
458 wm8510_write(codec, WM8510_IFACE, iface);
459 wm8510_write(codec, WM8510_CLOCK, clk);
463 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream,
464 struct snd_pcm_hw_params *params)
466 struct snd_soc_pcm_runtime *rtd = substream->private_data;
467 struct snd_soc_device *socdev = rtd->socdev;
468 struct snd_soc_codec *codec = socdev->codec;
469 u16 iface = wm8510_read_reg_cache(codec, WM8510_IFACE) & 0x19f;
470 u16 adn = wm8510_read_reg_cache(codec, WM8510_ADD) & 0x1f1;
473 switch (params_format(params)) {
474 case SNDRV_PCM_FORMAT_S16_LE:
476 case SNDRV_PCM_FORMAT_S20_3LE:
479 case SNDRV_PCM_FORMAT_S24_LE:
482 case SNDRV_PCM_FORMAT_S32_LE:
487 /* filter coefficient */
488 switch (params_rate(params)) {
489 case SNDRV_PCM_RATE_8000:
492 case SNDRV_PCM_RATE_11025:
495 case SNDRV_PCM_RATE_16000:
498 case SNDRV_PCM_RATE_22050:
501 case SNDRV_PCM_RATE_32000:
504 case SNDRV_PCM_RATE_44100:
505 case SNDRV_PCM_RATE_48000:
509 wm8510_write(codec, WM8510_IFACE, iface);
510 wm8510_write(codec, WM8510_ADD, adn);
514 static int wm8510_mute(struct snd_soc_dai *dai, int mute)
516 struct snd_soc_codec *codec = dai->codec;
517 u16 mute_reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0xffbf;
520 wm8510_write(codec, WM8510_DAC, mute_reg | 0x40);
522 wm8510_write(codec, WM8510_DAC, mute_reg);
526 /* liam need to make this lower power with dapm */
527 static int wm8510_set_bias_level(struct snd_soc_codec *codec,
528 enum snd_soc_bias_level level)
532 case SND_SOC_BIAS_ON:
533 wm8510_write(codec, WM8510_POWER1, 0x1ff);
534 wm8510_write(codec, WM8510_POWER2, 0x1ff);
535 wm8510_write(codec, WM8510_POWER3, 0x1ff);
537 case SND_SOC_BIAS_PREPARE:
538 case SND_SOC_BIAS_STANDBY:
540 case SND_SOC_BIAS_OFF:
541 /* everything off, dac mute, inactive */
542 wm8510_write(codec, WM8510_POWER1, 0x0);
543 wm8510_write(codec, WM8510_POWER2, 0x0);
544 wm8510_write(codec, WM8510_POWER3, 0x0);
547 codec->bias_level = level;
551 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
552 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
553 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
555 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
556 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
558 struct snd_soc_dai wm8510_dai = {
559 .name = "WM8510 HiFi",
561 .stream_name = "Playback",
564 .rates = WM8510_RATES,
565 .formats = WM8510_FORMATS,},
567 .stream_name = "Capture",
570 .rates = WM8510_RATES,
571 .formats = WM8510_FORMATS,},
573 .hw_params = wm8510_pcm_hw_params,
576 .digital_mute = wm8510_mute,
577 .set_fmt = wm8510_set_dai_fmt,
578 .set_clkdiv = wm8510_set_dai_clkdiv,
579 .set_pll = wm8510_set_dai_pll,
582 EXPORT_SYMBOL_GPL(wm8510_dai);
584 static int wm8510_suspend(struct platform_device *pdev, pm_message_t state)
586 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
587 struct snd_soc_codec *codec = socdev->codec;
589 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
593 static int wm8510_resume(struct platform_device *pdev)
595 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
596 struct snd_soc_codec *codec = socdev->codec;
599 u16 *cache = codec->reg_cache;
601 /* Sync reg_cache with the hardware */
602 for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) {
603 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
604 data[1] = cache[i] & 0x00ff;
605 codec->hw_write(codec->control_data, data, 2);
607 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
608 wm8510_set_bias_level(codec, codec->suspend_bias_level);
613 * initialise the WM8510 driver
614 * register the mixer and dsp interfaces with the kernel
616 static int wm8510_init(struct snd_soc_device *socdev)
618 struct snd_soc_codec *codec = socdev->codec;
621 codec->name = "WM8510";
622 codec->owner = THIS_MODULE;
623 codec->read = wm8510_read_reg_cache;
624 codec->write = wm8510_write;
625 codec->set_bias_level = wm8510_set_bias_level;
626 codec->dai = &wm8510_dai;
628 codec->reg_cache_size = ARRAY_SIZE(wm8510_reg);
629 codec->reg_cache = kmemdup(wm8510_reg, sizeof(wm8510_reg), GFP_KERNEL);
631 if (codec->reg_cache == NULL)
637 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
639 printk(KERN_ERR "wm8510: failed to create pcms\n");
643 /* power on device */
644 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
645 wm8510_add_controls(codec);
646 wm8510_add_widgets(codec);
647 ret = snd_soc_register_card(socdev);
649 printk(KERN_ERR "wm8510: failed to register card\n");
655 snd_soc_free_pcms(socdev);
656 snd_soc_dapm_free(socdev);
658 kfree(codec->reg_cache);
662 static struct snd_soc_device *wm8510_socdev;
664 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
667 * WM8510 2 wire address is 0x1a
670 static int wm8510_i2c_probe(struct i2c_client *i2c,
671 const struct i2c_device_id *id)
673 struct snd_soc_device *socdev = wm8510_socdev;
674 struct snd_soc_codec *codec = socdev->codec;
677 i2c_set_clientdata(i2c, codec);
678 codec->control_data = i2c;
680 ret = wm8510_init(socdev);
682 pr_err("failed to initialise WM8510\n");
687 static int wm8510_i2c_remove(struct i2c_client *client)
689 struct snd_soc_codec *codec = i2c_get_clientdata(client);
690 kfree(codec->reg_cache);
694 static const struct i2c_device_id wm8510_i2c_id[] = {
698 MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id);
700 static struct i2c_driver wm8510_i2c_driver = {
702 .name = "WM8510 I2C Codec",
703 .owner = THIS_MODULE,
705 .probe = wm8510_i2c_probe,
706 .remove = wm8510_i2c_remove,
707 .id_table = wm8510_i2c_id,
710 static int wm8510_add_i2c_device(struct platform_device *pdev,
711 const struct wm8510_setup_data *setup)
713 struct i2c_board_info info;
714 struct i2c_adapter *adapter;
715 struct i2c_client *client;
718 ret = i2c_add_driver(&wm8510_i2c_driver);
720 dev_err(&pdev->dev, "can't add i2c driver\n");
724 memset(&info, 0, sizeof(struct i2c_board_info));
725 info.addr = setup->i2c_address;
726 strlcpy(info.type, "wm8510", I2C_NAME_SIZE);
728 adapter = i2c_get_adapter(setup->i2c_bus);
730 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
735 client = i2c_new_device(adapter, &info);
736 i2c_put_adapter(adapter);
738 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
739 (unsigned int)info.addr);
746 i2c_del_driver(&wm8510_i2c_driver);
751 #if defined(CONFIG_SPI_MASTER)
752 static int __devinit wm8510_spi_probe(struct spi_device *spi)
754 struct snd_soc_device *socdev = wm8510_socdev;
755 struct snd_soc_codec *codec = socdev->codec;
758 codec->control_data = spi;
760 ret = wm8510_init(socdev);
762 dev_err(&spi->dev, "failed to initialise WM8510\n");
767 static int __devexit wm8510_spi_remove(struct spi_device *spi)
772 static struct spi_driver wm8510_spi_driver = {
775 .bus = &spi_bus_type,
776 .owner = THIS_MODULE,
778 .probe = wm8510_spi_probe,
779 .remove = __devexit_p(wm8510_spi_remove),
782 static int wm8510_spi_write(struct spi_device *spi, const char *data, int len)
784 struct spi_transfer t;
785 struct spi_message m;
794 spi_message_init(&m);
795 memset(&t, 0, (sizeof t));
800 spi_message_add_tail(&t, &m);
805 #endif /* CONFIG_SPI_MASTER */
807 static int wm8510_probe(struct platform_device *pdev)
809 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
810 struct wm8510_setup_data *setup;
811 struct snd_soc_codec *codec;
814 pr_info("WM8510 Audio Codec %s", WM8510_VERSION);
816 setup = socdev->codec_data;
817 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
821 socdev->codec = codec;
822 mutex_init(&codec->mutex);
823 INIT_LIST_HEAD(&codec->dapm_widgets);
824 INIT_LIST_HEAD(&codec->dapm_paths);
826 wm8510_socdev = socdev;
827 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
828 if (setup->i2c_address) {
829 codec->hw_write = (hw_write_t)i2c_master_send;
830 ret = wm8510_add_i2c_device(pdev, setup);
833 #if defined(CONFIG_SPI_MASTER)
835 codec->hw_write = (hw_write_t)wm8510_spi_write;
836 ret = spi_register_driver(&wm8510_spi_driver);
838 printk(KERN_ERR "can't add spi driver");
847 /* power down chip */
848 static int wm8510_remove(struct platform_device *pdev)
850 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
851 struct snd_soc_codec *codec = socdev->codec;
853 if (codec->control_data)
854 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
856 snd_soc_free_pcms(socdev);
857 snd_soc_dapm_free(socdev);
858 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
859 i2c_unregister_device(codec->control_data);
860 i2c_del_driver(&wm8510_i2c_driver);
862 #if defined(CONFIG_SPI_MASTER)
863 spi_unregister_driver(&wm8510_spi_driver);
870 struct snd_soc_codec_device soc_codec_dev_wm8510 = {
871 .probe = wm8510_probe,
872 .remove = wm8510_remove,
873 .suspend = wm8510_suspend,
874 .resume = wm8510_resume,
876 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510);
878 MODULE_DESCRIPTION("ASoC WM8510 driver");
879 MODULE_AUTHOR("Liam Girdwood");
880 MODULE_LICENSE("GPL");