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 <sound/core.h>
22 #include <sound/pcm.h>
23 #include <sound/pcm_params.h>
24 #include <sound/soc.h>
25 #include <sound/soc-dapm.h>
26 #include <sound/initval.h>
30 #define AUDIO_NAME "wm8510"
31 #define WM8510_VERSION "0.6"
33 struct snd_soc_codec_device soc_codec_dev_wm8510;
36 * wm8510 register cache
37 * We can't read the WM8510 register space when we are
38 * using 2 wire for device control, so we cache them instead.
40 static const u16 wm8510_reg[WM8510_CACHEREGNUM] = {
41 0x0000, 0x0000, 0x0000, 0x0000,
42 0x0050, 0x0000, 0x0140, 0x0000,
43 0x0000, 0x0000, 0x0000, 0x00ff,
44 0x0000, 0x0000, 0x0100, 0x00ff,
45 0x0000, 0x0000, 0x012c, 0x002c,
46 0x002c, 0x002c, 0x002c, 0x0000,
47 0x0032, 0x0000, 0x0000, 0x0000,
48 0x0000, 0x0000, 0x0000, 0x0000,
49 0x0038, 0x000b, 0x0032, 0x0000,
50 0x0008, 0x000c, 0x0093, 0x00e9,
51 0x0000, 0x0000, 0x0000, 0x0000,
52 0x0003, 0x0010, 0x0000, 0x0000,
53 0x0000, 0x0002, 0x0001, 0x0000,
54 0x0000, 0x0000, 0x0039, 0x0000,
59 * read wm8510 register cache
61 static inline unsigned int wm8510_read_reg_cache(struct snd_soc_codec *codec,
64 u16 *cache = codec->reg_cache;
65 if (reg == WM8510_RESET)
67 if (reg >= WM8510_CACHEREGNUM)
73 * write wm8510 register cache
75 static inline void wm8510_write_reg_cache(struct snd_soc_codec *codec,
76 u16 reg, unsigned int value)
78 u16 *cache = codec->reg_cache;
79 if (reg >= WM8510_CACHEREGNUM)
85 * write to the WM8510 register space
87 static int wm8510_write(struct snd_soc_codec *codec, unsigned int reg,
93 * D15..D9 WM8510 register offset
94 * D8...D0 register data
96 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
97 data[1] = value & 0x00ff;
99 wm8510_write_reg_cache(codec, reg, value);
100 if (codec->hw_write(codec->control_data, data, 2) == 2)
106 #define wm8510_reset(c) wm8510_write(c, WM8510_RESET, 0)
108 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };
109 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
110 static const char *wm8510_alc[] = { "ALC", "Limiter" };
112 static const struct soc_enum wm8510_enum[] = {
113 SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */
114 SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */
115 SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp),
116 SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc),
119 static const struct snd_kcontrol_new wm8510_snd_controls[] = {
121 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),
123 SOC_ENUM("DAC Companding", wm8510_enum[1]),
124 SOC_ENUM("ADC Companding", wm8510_enum[0]),
126 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),
127 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),
129 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),
131 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),
132 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),
133 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),
135 SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0),
137 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0),
138 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0),
139 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0),
141 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0),
142 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0),
144 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0),
145 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0),
146 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0),
148 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0),
149 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0),
150 SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0),
152 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),
153 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0),
154 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0),
156 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0),
157 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0),
159 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0),
160 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0),
162 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0),
163 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1),
164 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0),
165 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),
167 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0),
168 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),
171 /* add non dapm controls */
172 static int wm8510_add_controls(struct snd_soc_codec *codec)
176 for (i = 0; i < ARRAY_SIZE(wm8510_snd_controls); i++) {
177 err = snd_ctl_add(codec->card,
178 snd_soc_cnew(&wm8510_snd_controls[i], codec,
187 /* Speaker Output Mixer */
188 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {
189 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),
190 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),
191 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),
194 /* Mono Output Mixer */
195 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {
196 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),
197 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),
198 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),
201 static const struct snd_kcontrol_new wm8510_boost_controls[] = {
202 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 0),
203 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),
204 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),
207 static const struct snd_kcontrol_new wm8510_micpga_controls[] = {
208 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),
209 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),
210 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),
213 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {
214 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,
215 &wm8510_speaker_mixer_controls[0],
216 ARRAY_SIZE(wm8510_speaker_mixer_controls)),
217 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,
218 &wm8510_mono_mixer_controls[0],
219 ARRAY_SIZE(wm8510_mono_mixer_controls)),
220 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),
221 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),
222 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),
223 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),
224 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),
225 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),
227 SND_SOC_DAPM_PGA("Mic PGA", WM8510_POWER2, 2, 0,
228 &wm8510_micpga_controls[0],
229 ARRAY_SIZE(wm8510_micpga_controls)),
230 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,
231 &wm8510_boost_controls[0],
232 ARRAY_SIZE(wm8510_boost_controls)),
234 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),
236 SND_SOC_DAPM_INPUT("MICN"),
237 SND_SOC_DAPM_INPUT("MICP"),
238 SND_SOC_DAPM_INPUT("AUX"),
239 SND_SOC_DAPM_OUTPUT("MONOOUT"),
240 SND_SOC_DAPM_OUTPUT("SPKOUTP"),
241 SND_SOC_DAPM_OUTPUT("SPKOUTN"),
244 static const struct snd_soc_dapm_route audio_map[] = {
245 /* Mono output mixer */
246 {"Mono Mixer", "PCM Playback Switch", "DAC"},
247 {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
248 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
250 /* Speaker output mixer */
251 {"Speaker Mixer", "PCM Playback Switch", "DAC"},
252 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
253 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
256 {"Mono Out", NULL, "Mono Mixer"},
257 {"MONOOUT", NULL, "Mono Out"},
258 {"SpkN Out", NULL, "Speaker Mixer"},
259 {"SpkP Out", NULL, "Speaker Mixer"},
260 {"SPKOUTN", NULL, "SpkN Out"},
261 {"SPKOUTP", NULL, "SpkP Out"},
264 {"Mic PGA", "MICN Switch", "MICN"},
265 {"Mic PGA", "MICP Switch", "MICP"},
266 { "Mic PGA", "AUX Switch", "Aux Input" },
269 {"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
270 {"Boost Mixer", "Mic Volume", "MICP"},
271 {"Boost Mixer", "Aux Volume", "Aux Input"},
273 {"ADC", NULL, "Boost Mixer"},
276 static int wm8510_add_widgets(struct snd_soc_codec *codec)
278 snd_soc_dapm_new_controls(codec, wm8510_dapm_widgets,
279 ARRAY_SIZE(wm8510_dapm_widgets));
281 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
283 snd_soc_dapm_new_widgets(codec);
288 unsigned int pre_div:4; /* prescale - 1 */
293 static struct pll_ pll_div;
295 /* The size in bits of the pll divide multiplied by 10
296 * to allow rounding later */
297 #define FIXED_PLL_SIZE ((1 << 24) * 10)
299 static void pll_factors(unsigned int target, unsigned int source)
301 unsigned long long Kpart;
302 unsigned int K, Ndiv, Nmod;
304 Ndiv = target / source;
308 Ndiv = target / source;
312 if ((Ndiv < 6) || (Ndiv > 12))
314 "WM8510 N value %d outwith recommended range!d\n",
318 Nmod = target % source;
319 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
321 do_div(Kpart, source);
323 K = Kpart & 0xFFFFFFFF;
325 /* Check if we need to round */
329 /* Move down to proper range now rounding is done */
335 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai,
336 int pll_id, unsigned int freq_in, unsigned int freq_out)
338 struct snd_soc_codec *codec = codec_dai->codec;
341 if (freq_in == 0 || freq_out == 0) {
342 /* Clock CODEC directly from MCLK */
343 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
344 wm8510_write(codec, WM8510_CLOCK, reg & 0x0ff);
347 reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
348 wm8510_write(codec, WM8510_POWER1, reg & 0x1df);
352 pll_factors(freq_out*8, freq_in);
354 wm8510_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);
355 wm8510_write(codec, WM8510_PLLK1, pll_div.k >> 18);
356 wm8510_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);
357 wm8510_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff);
358 reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
359 wm8510_write(codec, WM8510_POWER1, reg | 0x020);
361 /* Run CODEC from PLL instead of MCLK */
362 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
363 wm8510_write(codec, WM8510_CLOCK, reg | 0x100);
369 * Configure WM8510 clock dividers.
371 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
374 struct snd_soc_codec *codec = codec_dai->codec;
378 case WM8510_OPCLKDIV:
379 reg = wm8510_read_reg_cache(codec, WM8510_GPIO) & 0x1cf;
380 wm8510_write(codec, WM8510_GPIO, reg | div);
383 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1f;
384 wm8510_write(codec, WM8510_CLOCK, reg | div);
387 reg = wm8510_read_reg_cache(codec, WM8510_ADC) & 0x1f7;
388 wm8510_write(codec, WM8510_ADC, reg | div);
391 reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0x1f7;
392 wm8510_write(codec, WM8510_DAC, reg | div);
395 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1e3;
396 wm8510_write(codec, WM8510_CLOCK, reg | div);
405 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai,
408 struct snd_soc_codec *codec = codec_dai->codec;
410 u16 clk = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1fe;
412 /* set master/slave audio interface */
413 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
414 case SND_SOC_DAIFMT_CBM_CFM:
417 case SND_SOC_DAIFMT_CBS_CFS:
423 /* interface format */
424 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
425 case SND_SOC_DAIFMT_I2S:
428 case SND_SOC_DAIFMT_RIGHT_J:
430 case SND_SOC_DAIFMT_LEFT_J:
433 case SND_SOC_DAIFMT_DSP_A:
440 /* clock inversion */
441 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
442 case SND_SOC_DAIFMT_NB_NF:
444 case SND_SOC_DAIFMT_IB_IF:
447 case SND_SOC_DAIFMT_IB_NF:
450 case SND_SOC_DAIFMT_NB_IF:
457 wm8510_write(codec, WM8510_IFACE, iface);
458 wm8510_write(codec, WM8510_CLOCK, clk);
462 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream,
463 struct snd_pcm_hw_params *params)
465 struct snd_soc_pcm_runtime *rtd = substream->private_data;
466 struct snd_soc_device *socdev = rtd->socdev;
467 struct snd_soc_codec *codec = socdev->codec;
468 u16 iface = wm8510_read_reg_cache(codec, WM8510_IFACE) & 0x19f;
469 u16 adn = wm8510_read_reg_cache(codec, WM8510_ADD) & 0x1f1;
472 switch (params_format(params)) {
473 case SNDRV_PCM_FORMAT_S16_LE:
475 case SNDRV_PCM_FORMAT_S20_3LE:
478 case SNDRV_PCM_FORMAT_S24_LE:
481 case SNDRV_PCM_FORMAT_S32_LE:
486 /* filter coefficient */
487 switch (params_rate(params)) {
488 case SNDRV_PCM_RATE_8000:
491 case SNDRV_PCM_RATE_11025:
494 case SNDRV_PCM_RATE_16000:
497 case SNDRV_PCM_RATE_22050:
500 case SNDRV_PCM_RATE_32000:
503 case SNDRV_PCM_RATE_44100:
504 case SNDRV_PCM_RATE_48000:
508 wm8510_write(codec, WM8510_IFACE, iface);
509 wm8510_write(codec, WM8510_ADD, adn);
513 static int wm8510_mute(struct snd_soc_dai *dai, int mute)
515 struct snd_soc_codec *codec = dai->codec;
516 u16 mute_reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0xffbf;
519 wm8510_write(codec, WM8510_DAC, mute_reg | 0x40);
521 wm8510_write(codec, WM8510_DAC, mute_reg);
525 /* liam need to make this lower power with dapm */
526 static int wm8510_set_bias_level(struct snd_soc_codec *codec,
527 enum snd_soc_bias_level level)
531 case SND_SOC_BIAS_ON:
532 wm8510_write(codec, WM8510_POWER1, 0x1ff);
533 wm8510_write(codec, WM8510_POWER2, 0x1ff);
534 wm8510_write(codec, WM8510_POWER3, 0x1ff);
536 case SND_SOC_BIAS_PREPARE:
537 case SND_SOC_BIAS_STANDBY:
539 case SND_SOC_BIAS_OFF:
540 /* everything off, dac mute, inactive */
541 wm8510_write(codec, WM8510_POWER1, 0x0);
542 wm8510_write(codec, WM8510_POWER2, 0x0);
543 wm8510_write(codec, WM8510_POWER3, 0x0);
546 codec->bias_level = level;
550 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
551 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
552 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
554 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
555 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
557 struct snd_soc_dai wm8510_dai = {
558 .name = "WM8510 HiFi",
560 .stream_name = "Playback",
563 .rates = WM8510_RATES,
564 .formats = WM8510_FORMATS,},
566 .stream_name = "Capture",
569 .rates = WM8510_RATES,
570 .formats = WM8510_FORMATS,},
572 .hw_params = wm8510_pcm_hw_params,
575 .digital_mute = wm8510_mute,
576 .set_fmt = wm8510_set_dai_fmt,
577 .set_clkdiv = wm8510_set_dai_clkdiv,
578 .set_pll = wm8510_set_dai_pll,
581 EXPORT_SYMBOL_GPL(wm8510_dai);
583 static int wm8510_suspend(struct platform_device *pdev, pm_message_t state)
585 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
586 struct snd_soc_codec *codec = socdev->codec;
588 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
592 static int wm8510_resume(struct platform_device *pdev)
594 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
595 struct snd_soc_codec *codec = socdev->codec;
598 u16 *cache = codec->reg_cache;
600 /* Sync reg_cache with the hardware */
601 for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) {
602 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
603 data[1] = cache[i] & 0x00ff;
604 codec->hw_write(codec->control_data, data, 2);
606 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
607 wm8510_set_bias_level(codec, codec->suspend_bias_level);
612 * initialise the WM8510 driver
613 * register the mixer and dsp interfaces with the kernel
615 static int wm8510_init(struct snd_soc_device *socdev)
617 struct snd_soc_codec *codec = socdev->codec;
620 codec->name = "WM8510";
621 codec->owner = THIS_MODULE;
622 codec->read = wm8510_read_reg_cache;
623 codec->write = wm8510_write;
624 codec->set_bias_level = wm8510_set_bias_level;
625 codec->dai = &wm8510_dai;
627 codec->reg_cache_size = ARRAY_SIZE(wm8510_reg);
628 codec->reg_cache = kmemdup(wm8510_reg, sizeof(wm8510_reg), GFP_KERNEL);
630 if (codec->reg_cache == NULL)
636 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
638 printk(KERN_ERR "wm8510: failed to create pcms\n");
642 /* power on device */
643 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
644 wm8510_add_controls(codec);
645 wm8510_add_widgets(codec);
646 ret = snd_soc_register_card(socdev);
648 printk(KERN_ERR "wm8510: failed to register card\n");
654 snd_soc_free_pcms(socdev);
655 snd_soc_dapm_free(socdev);
657 kfree(codec->reg_cache);
661 static struct snd_soc_device *wm8510_socdev;
663 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
666 * WM8510 2 wire address is 0x1a
668 #define I2C_DRIVERID_WM8510 0xfefe /* liam - need a proper id */
670 static unsigned short normal_i2c[] = { 0, I2C_CLIENT_END };
672 /* Magic definition of all other variables and things */
675 static struct i2c_driver wm8510_i2c_driver;
676 static struct i2c_client client_template;
678 /* If the i2c layer weren't so broken, we could pass this kind of data
681 static int wm8510_codec_probe(struct i2c_adapter *adap, int addr, int kind)
683 struct snd_soc_device *socdev = wm8510_socdev;
684 struct wm8510_setup_data *setup = socdev->codec_data;
685 struct snd_soc_codec *codec = socdev->codec;
686 struct i2c_client *i2c;
689 if (addr != setup->i2c_address)
692 client_template.adapter = adap;
693 client_template.addr = addr;
695 i2c = kmemdup(&client_template, sizeof(client_template), GFP_KERNEL);
699 i2c_set_clientdata(i2c, codec);
700 codec->control_data = i2c;
702 ret = i2c_attach_client(i2c);
704 pr_err("failed to attach codec at addr %x\n", addr);
708 ret = wm8510_init(socdev);
710 pr_err("failed to initialise WM8510\n");
720 static int wm8510_i2c_detach(struct i2c_client *client)
722 struct snd_soc_codec *codec = i2c_get_clientdata(client);
723 i2c_detach_client(client);
724 kfree(codec->reg_cache);
729 static int wm8510_i2c_attach(struct i2c_adapter *adap)
731 return i2c_probe(adap, &addr_data, wm8510_codec_probe);
734 /* corgi i2c codec control layer */
735 static struct i2c_driver wm8510_i2c_driver = {
737 .name = "WM8510 I2C Codec",
738 .owner = THIS_MODULE,
740 .id = I2C_DRIVERID_WM8510,
741 .attach_adapter = wm8510_i2c_attach,
742 .detach_client = wm8510_i2c_detach,
746 static struct i2c_client client_template = {
748 .driver = &wm8510_i2c_driver,
752 static int wm8510_probe(struct platform_device *pdev)
754 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
755 struct wm8510_setup_data *setup;
756 struct snd_soc_codec *codec;
759 pr_info("WM8510 Audio Codec %s", WM8510_VERSION);
761 setup = socdev->codec_data;
762 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
766 socdev->codec = codec;
767 mutex_init(&codec->mutex);
768 INIT_LIST_HEAD(&codec->dapm_widgets);
769 INIT_LIST_HEAD(&codec->dapm_paths);
771 wm8510_socdev = socdev;
772 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
773 if (setup->i2c_address) {
774 normal_i2c[0] = setup->i2c_address;
775 codec->hw_write = (hw_write_t)i2c_master_send;
776 ret = i2c_add_driver(&wm8510_i2c_driver);
778 printk(KERN_ERR "can't add i2c driver");
781 /* Add other interfaces here */
789 /* power down chip */
790 static int wm8510_remove(struct platform_device *pdev)
792 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
793 struct snd_soc_codec *codec = socdev->codec;
795 if (codec->control_data)
796 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
798 snd_soc_free_pcms(socdev);
799 snd_soc_dapm_free(socdev);
800 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
801 i2c_del_driver(&wm8510_i2c_driver);
808 struct snd_soc_codec_device soc_codec_dev_wm8510 = {
809 .probe = wm8510_probe,
810 .remove = wm8510_remove,
811 .suspend = wm8510_suspend,
812 .resume = wm8510_resume,
814 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510);
816 MODULE_DESCRIPTION("ASoC WM8510 driver");
817 MODULE_AUTHOR("Liam Girdwood");
818 MODULE_LICENSE("GPL");