2 * wm8510.c -- WM8510 ALSA Soc Audio driver
4 * Copyright 2006 Wolfson Microelectronics PLC.
6 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
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 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,
58 #define WM8510_POWER1_BIASEN 0x08
59 #define WM8510_POWER1_BUFIOEN 0x10
62 * read wm8510 register cache
64 static inline unsigned int wm8510_read_reg_cache(struct snd_soc_codec *codec,
67 u16 *cache = codec->reg_cache;
68 if (reg == WM8510_RESET)
70 if (reg >= WM8510_CACHEREGNUM)
76 * write wm8510 register cache
78 static inline void wm8510_write_reg_cache(struct snd_soc_codec *codec,
79 u16 reg, unsigned int value)
81 u16 *cache = codec->reg_cache;
82 if (reg >= WM8510_CACHEREGNUM)
88 * write to the WM8510 register space
90 static int wm8510_write(struct snd_soc_codec *codec, unsigned int reg,
96 * D15..D9 WM8510 register offset
97 * D8...D0 register data
99 data[0] = (reg << 1) | ((value >> 8) & 0x0001);
100 data[1] = value & 0x00ff;
102 wm8510_write_reg_cache(codec, reg, value);
103 if (codec->hw_write(codec->control_data, data, 2) == 2)
109 #define wm8510_reset(c) wm8510_write(c, WM8510_RESET, 0)
111 static const char *wm8510_companding[] = { "Off", "NC", "u-law", "A-law" };
112 static const char *wm8510_deemp[] = { "None", "32kHz", "44.1kHz", "48kHz" };
113 static const char *wm8510_alc[] = { "ALC", "Limiter" };
115 static const struct soc_enum wm8510_enum[] = {
116 SOC_ENUM_SINGLE(WM8510_COMP, 1, 4, wm8510_companding), /* adc */
117 SOC_ENUM_SINGLE(WM8510_COMP, 3, 4, wm8510_companding), /* dac */
118 SOC_ENUM_SINGLE(WM8510_DAC, 4, 4, wm8510_deemp),
119 SOC_ENUM_SINGLE(WM8510_ALC3, 8, 2, wm8510_alc),
122 static const struct snd_kcontrol_new wm8510_snd_controls[] = {
124 SOC_SINGLE("Digital Loopback Switch", WM8510_COMP, 0, 1, 0),
126 SOC_ENUM("DAC Companding", wm8510_enum[1]),
127 SOC_ENUM("ADC Companding", wm8510_enum[0]),
129 SOC_ENUM("Playback De-emphasis", wm8510_enum[2]),
130 SOC_SINGLE("DAC Inversion Switch", WM8510_DAC, 0, 1, 0),
132 SOC_SINGLE("Master Playback Volume", WM8510_DACVOL, 0, 127, 0),
134 SOC_SINGLE("High Pass Filter Switch", WM8510_ADC, 8, 1, 0),
135 SOC_SINGLE("High Pass Cut Off", WM8510_ADC, 4, 7, 0),
136 SOC_SINGLE("ADC Inversion Switch", WM8510_COMP, 0, 1, 0),
138 SOC_SINGLE("Capture Volume", WM8510_ADCVOL, 0, 127, 0),
140 SOC_SINGLE("DAC Playback Limiter Switch", WM8510_DACLIM1, 8, 1, 0),
141 SOC_SINGLE("DAC Playback Limiter Decay", WM8510_DACLIM1, 4, 15, 0),
142 SOC_SINGLE("DAC Playback Limiter Attack", WM8510_DACLIM1, 0, 15, 0),
144 SOC_SINGLE("DAC Playback Limiter Threshold", WM8510_DACLIM2, 4, 7, 0),
145 SOC_SINGLE("DAC Playback Limiter Boost", WM8510_DACLIM2, 0, 15, 0),
147 SOC_SINGLE("ALC Enable Switch", WM8510_ALC1, 8, 1, 0),
148 SOC_SINGLE("ALC Capture Max Gain", WM8510_ALC1, 3, 7, 0),
149 SOC_SINGLE("ALC Capture Min Gain", WM8510_ALC1, 0, 7, 0),
151 SOC_SINGLE("ALC Capture ZC Switch", WM8510_ALC2, 8, 1, 0),
152 SOC_SINGLE("ALC Capture Hold", WM8510_ALC2, 4, 7, 0),
153 SOC_SINGLE("ALC Capture Target", WM8510_ALC2, 0, 15, 0),
155 SOC_ENUM("ALC Capture Mode", wm8510_enum[3]),
156 SOC_SINGLE("ALC Capture Decay", WM8510_ALC3, 4, 15, 0),
157 SOC_SINGLE("ALC Capture Attack", WM8510_ALC3, 0, 15, 0),
159 SOC_SINGLE("ALC Capture Noise Gate Switch", WM8510_NGATE, 3, 1, 0),
160 SOC_SINGLE("ALC Capture Noise Gate Threshold", WM8510_NGATE, 0, 7, 0),
162 SOC_SINGLE("Capture PGA ZC Switch", WM8510_INPPGA, 7, 1, 0),
163 SOC_SINGLE("Capture PGA Volume", WM8510_INPPGA, 0, 63, 0),
165 SOC_SINGLE("Speaker Playback ZC Switch", WM8510_SPKVOL, 7, 1, 0),
166 SOC_SINGLE("Speaker Playback Switch", WM8510_SPKVOL, 6, 1, 1),
167 SOC_SINGLE("Speaker Playback Volume", WM8510_SPKVOL, 0, 63, 0),
168 SOC_SINGLE("Speaker Boost", WM8510_OUTPUT, 2, 1, 0),
170 SOC_SINGLE("Capture Boost(+20dB)", WM8510_ADCBOOST, 8, 1, 0),
171 SOC_SINGLE("Mono Playback Switch", WM8510_MONOMIX, 6, 1, 1),
174 /* add non dapm controls */
175 static int wm8510_add_controls(struct snd_soc_codec *codec)
179 for (i = 0; i < ARRAY_SIZE(wm8510_snd_controls); i++) {
180 err = snd_ctl_add(codec->card,
181 snd_soc_cnew(&wm8510_snd_controls[i], codec,
190 /* Speaker Output Mixer */
191 static const struct snd_kcontrol_new wm8510_speaker_mixer_controls[] = {
192 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_SPKMIX, 1, 1, 0),
193 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_SPKMIX, 5, 1, 0),
194 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_SPKMIX, 0, 1, 0),
197 /* Mono Output Mixer */
198 static const struct snd_kcontrol_new wm8510_mono_mixer_controls[] = {
199 SOC_DAPM_SINGLE("Line Bypass Switch", WM8510_MONOMIX, 1, 1, 0),
200 SOC_DAPM_SINGLE("Aux Playback Switch", WM8510_MONOMIX, 2, 1, 0),
201 SOC_DAPM_SINGLE("PCM Playback Switch", WM8510_MONOMIX, 0, 1, 0),
204 static const struct snd_kcontrol_new wm8510_boost_controls[] = {
205 SOC_DAPM_SINGLE("Mic PGA Switch", WM8510_INPPGA, 6, 1, 1),
206 SOC_DAPM_SINGLE("Aux Volume", WM8510_ADCBOOST, 0, 7, 0),
207 SOC_DAPM_SINGLE("Mic Volume", WM8510_ADCBOOST, 4, 7, 0),
210 static const struct snd_kcontrol_new wm8510_micpga_controls[] = {
211 SOC_DAPM_SINGLE("MICP Switch", WM8510_INPUT, 0, 1, 0),
212 SOC_DAPM_SINGLE("MICN Switch", WM8510_INPUT, 1, 1, 0),
213 SOC_DAPM_SINGLE("AUX Switch", WM8510_INPUT, 2, 1, 0),
216 static const struct snd_soc_dapm_widget wm8510_dapm_widgets[] = {
217 SND_SOC_DAPM_MIXER("Speaker Mixer", WM8510_POWER3, 2, 0,
218 &wm8510_speaker_mixer_controls[0],
219 ARRAY_SIZE(wm8510_speaker_mixer_controls)),
220 SND_SOC_DAPM_MIXER("Mono Mixer", WM8510_POWER3, 3, 0,
221 &wm8510_mono_mixer_controls[0],
222 ARRAY_SIZE(wm8510_mono_mixer_controls)),
223 SND_SOC_DAPM_DAC("DAC", "HiFi Playback", WM8510_POWER3, 0, 0),
224 SND_SOC_DAPM_ADC("ADC", "HiFi Capture", WM8510_POWER2, 0, 0),
225 SND_SOC_DAPM_PGA("Aux Input", WM8510_POWER1, 6, 0, NULL, 0),
226 SND_SOC_DAPM_PGA("SpkN Out", WM8510_POWER3, 5, 0, NULL, 0),
227 SND_SOC_DAPM_PGA("SpkP Out", WM8510_POWER3, 6, 0, NULL, 0),
228 SND_SOC_DAPM_PGA("Mono Out", WM8510_POWER3, 7, 0, NULL, 0),
230 SND_SOC_DAPM_MIXER("Mic PGA", WM8510_POWER2, 2, 0,
231 &wm8510_micpga_controls[0],
232 ARRAY_SIZE(wm8510_micpga_controls)),
233 SND_SOC_DAPM_MIXER("Boost Mixer", WM8510_POWER2, 4, 0,
234 &wm8510_boost_controls[0],
235 ARRAY_SIZE(wm8510_boost_controls)),
237 SND_SOC_DAPM_MICBIAS("Mic Bias", WM8510_POWER1, 4, 0),
239 SND_SOC_DAPM_INPUT("MICN"),
240 SND_SOC_DAPM_INPUT("MICP"),
241 SND_SOC_DAPM_INPUT("AUX"),
242 SND_SOC_DAPM_OUTPUT("MONOOUT"),
243 SND_SOC_DAPM_OUTPUT("SPKOUTP"),
244 SND_SOC_DAPM_OUTPUT("SPKOUTN"),
247 static const struct snd_soc_dapm_route audio_map[] = {
248 /* Mono output mixer */
249 {"Mono Mixer", "PCM Playback Switch", "DAC"},
250 {"Mono Mixer", "Aux Playback Switch", "Aux Input"},
251 {"Mono Mixer", "Line Bypass Switch", "Boost Mixer"},
253 /* Speaker output mixer */
254 {"Speaker Mixer", "PCM Playback Switch", "DAC"},
255 {"Speaker Mixer", "Aux Playback Switch", "Aux Input"},
256 {"Speaker Mixer", "Line Bypass Switch", "Boost Mixer"},
259 {"Mono Out", NULL, "Mono Mixer"},
260 {"MONOOUT", NULL, "Mono Out"},
261 {"SpkN Out", NULL, "Speaker Mixer"},
262 {"SpkP Out", NULL, "Speaker Mixer"},
263 {"SPKOUTN", NULL, "SpkN Out"},
264 {"SPKOUTP", NULL, "SpkP Out"},
267 {"Mic PGA", "MICN Switch", "MICN"},
268 {"Mic PGA", "MICP Switch", "MICP"},
269 { "Mic PGA", "AUX Switch", "Aux Input" },
272 {"Boost Mixer", "Mic PGA Switch", "Mic PGA"},
273 {"Boost Mixer", "Mic Volume", "MICP"},
274 {"Boost Mixer", "Aux Volume", "Aux Input"},
276 {"ADC", NULL, "Boost Mixer"},
279 static int wm8510_add_widgets(struct snd_soc_codec *codec)
281 snd_soc_dapm_new_controls(codec, wm8510_dapm_widgets,
282 ARRAY_SIZE(wm8510_dapm_widgets));
284 snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));
286 snd_soc_dapm_new_widgets(codec);
291 unsigned int pre_div:4; /* prescale - 1 */
296 static struct pll_ pll_div;
298 /* The size in bits of the pll divide multiplied by 10
299 * to allow rounding later */
300 #define FIXED_PLL_SIZE ((1 << 24) * 10)
302 static void pll_factors(unsigned int target, unsigned int source)
304 unsigned long long Kpart;
305 unsigned int K, Ndiv, Nmod;
307 Ndiv = target / source;
311 Ndiv = target / source;
315 if ((Ndiv < 6) || (Ndiv > 12))
317 "WM8510 N value %d outwith recommended range!d\n",
321 Nmod = target % source;
322 Kpart = FIXED_PLL_SIZE * (long long)Nmod;
324 do_div(Kpart, source);
326 K = Kpart & 0xFFFFFFFF;
328 /* Check if we need to round */
332 /* Move down to proper range now rounding is done */
338 static int wm8510_set_dai_pll(struct snd_soc_dai *codec_dai,
339 int pll_id, unsigned int freq_in, unsigned int freq_out)
341 struct snd_soc_codec *codec = codec_dai->codec;
344 if (freq_in == 0 || freq_out == 0) {
345 /* Clock CODEC directly from MCLK */
346 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
347 wm8510_write(codec, WM8510_CLOCK, reg & 0x0ff);
350 reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
351 wm8510_write(codec, WM8510_POWER1, reg & 0x1df);
355 pll_factors(freq_out*8, freq_in);
357 wm8510_write(codec, WM8510_PLLN, (pll_div.pre_div << 4) | pll_div.n);
358 wm8510_write(codec, WM8510_PLLK1, pll_div.k >> 18);
359 wm8510_write(codec, WM8510_PLLK2, (pll_div.k >> 9) & 0x1ff);
360 wm8510_write(codec, WM8510_PLLK3, pll_div.k & 0x1ff);
361 reg = wm8510_read_reg_cache(codec, WM8510_POWER1);
362 wm8510_write(codec, WM8510_POWER1, reg | 0x020);
364 /* Run CODEC from PLL instead of MCLK */
365 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK);
366 wm8510_write(codec, WM8510_CLOCK, reg | 0x100);
372 * Configure WM8510 clock dividers.
374 static int wm8510_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
377 struct snd_soc_codec *codec = codec_dai->codec;
381 case WM8510_OPCLKDIV:
382 reg = wm8510_read_reg_cache(codec, WM8510_GPIO) & 0x1cf;
383 wm8510_write(codec, WM8510_GPIO, reg | div);
386 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1f;
387 wm8510_write(codec, WM8510_CLOCK, reg | div);
390 reg = wm8510_read_reg_cache(codec, WM8510_ADC) & 0x1f7;
391 wm8510_write(codec, WM8510_ADC, reg | div);
394 reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0x1f7;
395 wm8510_write(codec, WM8510_DAC, reg | div);
398 reg = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1e3;
399 wm8510_write(codec, WM8510_CLOCK, reg | div);
408 static int wm8510_set_dai_fmt(struct snd_soc_dai *codec_dai,
411 struct snd_soc_codec *codec = codec_dai->codec;
413 u16 clk = wm8510_read_reg_cache(codec, WM8510_CLOCK) & 0x1fe;
415 /* set master/slave audio interface */
416 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
417 case SND_SOC_DAIFMT_CBM_CFM:
420 case SND_SOC_DAIFMT_CBS_CFS:
426 /* interface format */
427 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
428 case SND_SOC_DAIFMT_I2S:
431 case SND_SOC_DAIFMT_RIGHT_J:
433 case SND_SOC_DAIFMT_LEFT_J:
436 case SND_SOC_DAIFMT_DSP_A:
443 /* clock inversion */
444 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
445 case SND_SOC_DAIFMT_NB_NF:
447 case SND_SOC_DAIFMT_IB_IF:
450 case SND_SOC_DAIFMT_IB_NF:
453 case SND_SOC_DAIFMT_NB_IF:
460 wm8510_write(codec, WM8510_IFACE, iface);
461 wm8510_write(codec, WM8510_CLOCK, clk);
465 static int wm8510_pcm_hw_params(struct snd_pcm_substream *substream,
466 struct snd_pcm_hw_params *params)
468 struct snd_soc_pcm_runtime *rtd = substream->private_data;
469 struct snd_soc_device *socdev = rtd->socdev;
470 struct snd_soc_codec *codec = socdev->codec;
471 u16 iface = wm8510_read_reg_cache(codec, WM8510_IFACE) & 0x19f;
472 u16 adn = wm8510_read_reg_cache(codec, WM8510_ADD) & 0x1f1;
475 switch (params_format(params)) {
476 case SNDRV_PCM_FORMAT_S16_LE:
478 case SNDRV_PCM_FORMAT_S20_3LE:
481 case SNDRV_PCM_FORMAT_S24_LE:
484 case SNDRV_PCM_FORMAT_S32_LE:
489 /* filter coefficient */
490 switch (params_rate(params)) {
491 case SNDRV_PCM_RATE_8000:
494 case SNDRV_PCM_RATE_11025:
497 case SNDRV_PCM_RATE_16000:
500 case SNDRV_PCM_RATE_22050:
503 case SNDRV_PCM_RATE_32000:
506 case SNDRV_PCM_RATE_44100:
507 case SNDRV_PCM_RATE_48000:
511 wm8510_write(codec, WM8510_IFACE, iface);
512 wm8510_write(codec, WM8510_ADD, adn);
516 static int wm8510_mute(struct snd_soc_dai *dai, int mute)
518 struct snd_soc_codec *codec = dai->codec;
519 u16 mute_reg = wm8510_read_reg_cache(codec, WM8510_DAC) & 0xffbf;
522 wm8510_write(codec, WM8510_DAC, mute_reg | 0x40);
524 wm8510_write(codec, WM8510_DAC, mute_reg);
528 /* liam need to make this lower power with dapm */
529 static int wm8510_set_bias_level(struct snd_soc_codec *codec,
530 enum snd_soc_bias_level level)
532 u16 power1 = wm8510_read_reg_cache(codec, WM8510_POWER1) & ~0x3;
535 case SND_SOC_BIAS_ON:
536 case SND_SOC_BIAS_PREPARE:
537 power1 |= 0x1; /* VMID 50k */
538 wm8510_write(codec, WM8510_POWER1, power1);
541 case SND_SOC_BIAS_STANDBY:
542 power1 |= WM8510_POWER1_BIASEN | WM8510_POWER1_BUFIOEN;
544 if (codec->bias_level == SND_SOC_BIAS_OFF) {
545 /* Initial cap charge at VMID 5k */
546 wm8510_write(codec, WM8510_POWER1, power1 | 0x3);
550 power1 |= 0x2; /* VMID 500k */
551 wm8510_write(codec, WM8510_POWER1, power1);
554 case SND_SOC_BIAS_OFF:
555 wm8510_write(codec, WM8510_POWER1, 0);
556 wm8510_write(codec, WM8510_POWER2, 0);
557 wm8510_write(codec, WM8510_POWER3, 0);
561 codec->bias_level = level;
565 #define WM8510_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\
566 SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\
567 SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
569 #define WM8510_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
570 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
572 struct snd_soc_dai wm8510_dai = {
573 .name = "WM8510 HiFi",
575 .stream_name = "Playback",
578 .rates = WM8510_RATES,
579 .formats = WM8510_FORMATS,},
581 .stream_name = "Capture",
584 .rates = WM8510_RATES,
585 .formats = WM8510_FORMATS,},
587 .hw_params = wm8510_pcm_hw_params,
590 .digital_mute = wm8510_mute,
591 .set_fmt = wm8510_set_dai_fmt,
592 .set_clkdiv = wm8510_set_dai_clkdiv,
593 .set_pll = wm8510_set_dai_pll,
596 EXPORT_SYMBOL_GPL(wm8510_dai);
598 static int wm8510_suspend(struct platform_device *pdev, pm_message_t state)
600 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
601 struct snd_soc_codec *codec = socdev->codec;
603 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
607 static int wm8510_resume(struct platform_device *pdev)
609 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
610 struct snd_soc_codec *codec = socdev->codec;
613 u16 *cache = codec->reg_cache;
615 /* Sync reg_cache with the hardware */
616 for (i = 0; i < ARRAY_SIZE(wm8510_reg); i++) {
617 data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001);
618 data[1] = cache[i] & 0x00ff;
619 codec->hw_write(codec->control_data, data, 2);
621 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
622 wm8510_set_bias_level(codec, codec->suspend_bias_level);
627 * initialise the WM8510 driver
628 * register the mixer and dsp interfaces with the kernel
630 static int wm8510_init(struct snd_soc_device *socdev)
632 struct snd_soc_codec *codec = socdev->codec;
635 codec->name = "WM8510";
636 codec->owner = THIS_MODULE;
637 codec->read = wm8510_read_reg_cache;
638 codec->write = wm8510_write;
639 codec->set_bias_level = wm8510_set_bias_level;
640 codec->dai = &wm8510_dai;
642 codec->reg_cache_size = ARRAY_SIZE(wm8510_reg);
643 codec->reg_cache = kmemdup(wm8510_reg, sizeof(wm8510_reg), GFP_KERNEL);
645 if (codec->reg_cache == NULL)
651 ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
653 printk(KERN_ERR "wm8510: failed to create pcms\n");
657 /* power on device */
658 codec->bias_level = SND_SOC_BIAS_OFF;
659 wm8510_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
660 wm8510_add_controls(codec);
661 wm8510_add_widgets(codec);
662 ret = snd_soc_register_card(socdev);
664 printk(KERN_ERR "wm8510: failed to register card\n");
670 snd_soc_free_pcms(socdev);
671 snd_soc_dapm_free(socdev);
673 kfree(codec->reg_cache);
677 static struct snd_soc_device *wm8510_socdev;
679 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
682 * WM8510 2 wire address is 0x1a
685 static int wm8510_i2c_probe(struct i2c_client *i2c,
686 const struct i2c_device_id *id)
688 struct snd_soc_device *socdev = wm8510_socdev;
689 struct snd_soc_codec *codec = socdev->codec;
692 i2c_set_clientdata(i2c, codec);
693 codec->control_data = i2c;
695 ret = wm8510_init(socdev);
697 pr_err("failed to initialise WM8510\n");
702 static int wm8510_i2c_remove(struct i2c_client *client)
704 struct snd_soc_codec *codec = i2c_get_clientdata(client);
705 kfree(codec->reg_cache);
709 static const struct i2c_device_id wm8510_i2c_id[] = {
713 MODULE_DEVICE_TABLE(i2c, wm8510_i2c_id);
715 static struct i2c_driver wm8510_i2c_driver = {
717 .name = "WM8510 I2C Codec",
718 .owner = THIS_MODULE,
720 .probe = wm8510_i2c_probe,
721 .remove = wm8510_i2c_remove,
722 .id_table = wm8510_i2c_id,
725 static int wm8510_add_i2c_device(struct platform_device *pdev,
726 const struct wm8510_setup_data *setup)
728 struct i2c_board_info info;
729 struct i2c_adapter *adapter;
730 struct i2c_client *client;
733 ret = i2c_add_driver(&wm8510_i2c_driver);
735 dev_err(&pdev->dev, "can't add i2c driver\n");
739 memset(&info, 0, sizeof(struct i2c_board_info));
740 info.addr = setup->i2c_address;
741 strlcpy(info.type, "wm8510", I2C_NAME_SIZE);
743 adapter = i2c_get_adapter(setup->i2c_bus);
745 dev_err(&pdev->dev, "can't get i2c adapter %d\n",
750 client = i2c_new_device(adapter, &info);
751 i2c_put_adapter(adapter);
753 dev_err(&pdev->dev, "can't add i2c device at 0x%x\n",
754 (unsigned int)info.addr);
761 i2c_del_driver(&wm8510_i2c_driver);
766 #if defined(CONFIG_SPI_MASTER)
767 static int __devinit wm8510_spi_probe(struct spi_device *spi)
769 struct snd_soc_device *socdev = wm8510_socdev;
770 struct snd_soc_codec *codec = socdev->codec;
773 codec->control_data = spi;
775 ret = wm8510_init(socdev);
777 dev_err(&spi->dev, "failed to initialise WM8510\n");
782 static int __devexit wm8510_spi_remove(struct spi_device *spi)
787 static struct spi_driver wm8510_spi_driver = {
790 .bus = &spi_bus_type,
791 .owner = THIS_MODULE,
793 .probe = wm8510_spi_probe,
794 .remove = __devexit_p(wm8510_spi_remove),
797 static int wm8510_spi_write(struct spi_device *spi, const char *data, int len)
799 struct spi_transfer t;
800 struct spi_message m;
809 spi_message_init(&m);
810 memset(&t, 0, (sizeof t));
815 spi_message_add_tail(&t, &m);
820 #endif /* CONFIG_SPI_MASTER */
822 static int wm8510_probe(struct platform_device *pdev)
824 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
825 struct wm8510_setup_data *setup;
826 struct snd_soc_codec *codec;
829 pr_info("WM8510 Audio Codec %s", WM8510_VERSION);
831 setup = socdev->codec_data;
832 codec = kzalloc(sizeof(struct snd_soc_codec), GFP_KERNEL);
836 socdev->codec = codec;
837 mutex_init(&codec->mutex);
838 INIT_LIST_HEAD(&codec->dapm_widgets);
839 INIT_LIST_HEAD(&codec->dapm_paths);
841 wm8510_socdev = socdev;
842 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
843 if (setup->i2c_address) {
844 codec->hw_write = (hw_write_t)i2c_master_send;
845 ret = wm8510_add_i2c_device(pdev, setup);
848 #if defined(CONFIG_SPI_MASTER)
850 codec->hw_write = (hw_write_t)wm8510_spi_write;
851 ret = spi_register_driver(&wm8510_spi_driver);
853 printk(KERN_ERR "can't add spi driver");
862 /* power down chip */
863 static int wm8510_remove(struct platform_device *pdev)
865 struct snd_soc_device *socdev = platform_get_drvdata(pdev);
866 struct snd_soc_codec *codec = socdev->codec;
868 if (codec->control_data)
869 wm8510_set_bias_level(codec, SND_SOC_BIAS_OFF);
871 snd_soc_free_pcms(socdev);
872 snd_soc_dapm_free(socdev);
873 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
874 i2c_unregister_device(codec->control_data);
875 i2c_del_driver(&wm8510_i2c_driver);
877 #if defined(CONFIG_SPI_MASTER)
878 spi_unregister_driver(&wm8510_spi_driver);
885 struct snd_soc_codec_device soc_codec_dev_wm8510 = {
886 .probe = wm8510_probe,
887 .remove = wm8510_remove,
888 .suspend = wm8510_suspend,
889 .resume = wm8510_resume,
891 EXPORT_SYMBOL_GPL(soc_codec_dev_wm8510);
893 MODULE_DESCRIPTION("ASoC WM8510 driver");
894 MODULE_AUTHOR("Liam Girdwood");
895 MODULE_LICENSE("GPL");