2 * wm8776.c -- WM8776 ALSA SoC Audio driver
4 * Copyright 2009-12 Wolfson Microelectronics plc
6 * Author: Mark Brown <broonie@opensource.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.
12 * TODO: Input ALC/limiter support
15 #include <linux/module.h>
16 #include <linux/moduleparam.h>
17 #include <linux/init.h>
18 #include <linux/delay.h>
20 #include <linux/i2c.h>
21 #include <linux/of_device.h>
22 #include <linux/spi/spi.h>
23 #include <linux/slab.h>
24 #include <sound/core.h>
25 #include <sound/pcm.h>
26 #include <sound/pcm_params.h>
27 #include <sound/soc.h>
28 #include <sound/initval.h>
29 #include <sound/tlv.h>
33 enum wm8776_chip_type {
38 /* codec private data */
40 enum snd_soc_control_type control_type;
44 static const u16 wm8776_reg[WM8776_CACHEREGNUM] = {
45 0x79, 0x79, 0x79, 0xff, 0xff, /* 4 */
46 0xff, 0x00, 0x90, 0x00, 0x00, /* 9 */
47 0x22, 0x22, 0x22, 0x08, 0xcf, /* 14 */
48 0xcf, 0x7b, 0x00, 0x32, 0x00, /* 19 */
52 static int wm8776_reset(struct snd_soc_codec *codec)
54 return snd_soc_write(codec, WM8776_RESET, 0);
57 static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1);
58 static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1);
59 static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1);
61 static const struct snd_kcontrol_new wm8776_snd_controls[] = {
62 SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL,
64 SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL,
66 SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0),
68 SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0),
70 SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL,
72 SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1),
73 SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0),
74 SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1),
77 static const struct snd_kcontrol_new inmix_controls[] = {
78 SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0),
79 SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0),
80 SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0),
81 SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0),
82 SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0),
85 static const struct snd_kcontrol_new outmix_controls[] = {
86 SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0),
87 SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0),
88 SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0),
91 static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = {
92 SND_SOC_DAPM_INPUT("AUX"),
94 SND_SOC_DAPM_INPUT("AIN1"),
95 SND_SOC_DAPM_INPUT("AIN2"),
96 SND_SOC_DAPM_INPUT("AIN3"),
97 SND_SOC_DAPM_INPUT("AIN4"),
98 SND_SOC_DAPM_INPUT("AIN5"),
100 SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1,
101 inmix_controls, ARRAY_SIZE(inmix_controls)),
103 SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1),
104 SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1),
106 SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0,
107 outmix_controls, ARRAY_SIZE(outmix_controls)),
109 SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0),
111 SND_SOC_DAPM_OUTPUT("VOUT"),
113 SND_SOC_DAPM_OUTPUT("HPOUTL"),
114 SND_SOC_DAPM_OUTPUT("HPOUTR"),
117 static const struct snd_soc_dapm_route routes[] = {
118 { "Input Mixer", "AIN1 Switch", "AIN1" },
119 { "Input Mixer", "AIN2 Switch", "AIN2" },
120 { "Input Mixer", "AIN3 Switch", "AIN3" },
121 { "Input Mixer", "AIN4 Switch", "AIN4" },
122 { "Input Mixer", "AIN5 Switch", "AIN5" },
124 { "ADC", NULL, "Input Mixer" },
126 { "Output Mixer", "DAC Switch", "DAC" },
127 { "Output Mixer", "AUX Switch", "AUX" },
128 { "Output Mixer", "Bypass Switch", "Input Mixer" },
130 { "VOUT", NULL, "Output Mixer" },
132 { "Headphone PGA", NULL, "Output Mixer" },
134 { "HPOUTL", NULL, "Headphone PGA" },
135 { "HPOUTR", NULL, "Headphone PGA" },
138 static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
140 struct snd_soc_codec *codec = dai->codec;
141 int reg, iface, master;
143 switch (dai->driver->id) {
145 reg = WM8776_DACIFCTRL;
149 reg = WM8776_ADCIFCTRL;
158 switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
159 case SND_SOC_DAIFMT_CBM_CFM:
161 case SND_SOC_DAIFMT_CBS_CFS:
168 switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
169 case SND_SOC_DAIFMT_I2S:
172 case SND_SOC_DAIFMT_RIGHT_J:
174 case SND_SOC_DAIFMT_LEFT_J:
181 switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
182 case SND_SOC_DAIFMT_NB_NF:
184 case SND_SOC_DAIFMT_IB_IF:
187 case SND_SOC_DAIFMT_IB_NF:
190 case SND_SOC_DAIFMT_NB_IF:
197 /* Finally, write out the values */
198 snd_soc_update_bits(codec, reg, 0xf, iface);
199 snd_soc_update_bits(codec, WM8776_MSTRCTRL, 0x180, master);
204 static int mclk_ratios[] = {
213 static int wm8776_hw_params(struct snd_pcm_substream *substream,
214 struct snd_pcm_hw_params *params,
215 struct snd_soc_dai *dai)
217 struct snd_soc_codec *codec = dai->codec;
218 struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
219 int iface_reg, iface;
220 int ratio_shift, master;
223 switch (dai->driver->id) {
225 iface_reg = WM8776_DACIFCTRL;
230 iface_reg = WM8776_ADCIFCTRL;
238 /* Set word length */
239 switch (snd_pcm_format_width(params_format(params))) {
253 dev_err(codec->dev, "Unsupported sample size: %i\n",
254 snd_pcm_format_width(params_format(params)));
258 /* Only need to set MCLK/LRCLK ratio if we're master */
259 if (snd_soc_read(codec, WM8776_MSTRCTRL) & master) {
260 for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) {
261 if (wm8776->sysclk[dai->driver->id] / params_rate(params)
266 if (i == ARRAY_SIZE(mclk_ratios)) {
268 "Unable to configure MCLK ratio %d/%d\n",
269 wm8776->sysclk[dai->driver->id], params_rate(params));
273 dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]);
275 snd_soc_update_bits(codec, WM8776_MSTRCTRL,
276 0x7 << ratio_shift, i << ratio_shift);
278 dev_dbg(codec->dev, "DAI in slave mode\n");
281 snd_soc_update_bits(codec, iface_reg, 0x30, iface);
286 static int wm8776_mute(struct snd_soc_dai *dai, int mute)
288 struct snd_soc_codec *codec = dai->codec;
290 return snd_soc_write(codec, WM8776_DACMUTE, !!mute);
293 static int wm8776_set_sysclk(struct snd_soc_dai *dai,
294 int clk_id, unsigned int freq, int dir)
296 struct snd_soc_codec *codec = dai->codec;
297 struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
299 BUG_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk));
301 wm8776->sysclk[dai->driver->id] = freq;
306 static int wm8776_set_bias_level(struct snd_soc_codec *codec,
307 enum snd_soc_bias_level level)
310 case SND_SOC_BIAS_ON:
312 case SND_SOC_BIAS_PREPARE:
314 case SND_SOC_BIAS_STANDBY:
315 if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) {
316 snd_soc_cache_sync(codec);
318 /* Disable the global powerdown; DAPM does the rest */
319 snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 0);
323 case SND_SOC_BIAS_OFF:
324 snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 1);
328 codec->dapm.bias_level = level;
332 #define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\
333 SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
335 static const struct snd_soc_dai_ops wm8776_dac_ops = {
336 .digital_mute = wm8776_mute,
337 .hw_params = wm8776_hw_params,
338 .set_fmt = wm8776_set_fmt,
339 .set_sysclk = wm8776_set_sysclk,
342 static const struct snd_soc_dai_ops wm8776_adc_ops = {
343 .hw_params = wm8776_hw_params,
344 .set_fmt = wm8776_set_fmt,
345 .set_sysclk = wm8776_set_sysclk,
348 static struct snd_soc_dai_driver wm8776_dai[] = {
350 .name = "wm8776-hifi-playback",
351 .id = WM8776_DAI_DAC,
353 .stream_name = "Playback",
356 .rates = SNDRV_PCM_RATE_CONTINUOUS,
359 .formats = WM8776_FORMATS,
361 .ops = &wm8776_dac_ops,
364 .name = "wm8776-hifi-capture",
365 .id = WM8776_DAI_ADC,
367 .stream_name = "Capture",
370 .rates = SNDRV_PCM_RATE_CONTINUOUS,
373 .formats = WM8776_FORMATS,
375 .ops = &wm8776_adc_ops,
380 static int wm8776_suspend(struct snd_soc_codec *codec)
382 wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF);
387 static int wm8776_resume(struct snd_soc_codec *codec)
389 wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
393 #define wm8776_suspend NULL
394 #define wm8776_resume NULL
397 static int wm8776_probe(struct snd_soc_codec *codec)
399 struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec);
402 ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8776->control_type);
404 dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret);
408 ret = wm8776_reset(codec);
410 dev_err(codec->dev, "Failed to issue reset: %d\n", ret);
414 wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
416 /* Latch the update bits; right channel only since we always
418 snd_soc_update_bits(codec, WM8776_HPRVOL, 0x100, 0x100);
419 snd_soc_update_bits(codec, WM8776_DACRVOL, 0x100, 0x100);
424 /* power down chip */
425 static int wm8776_remove(struct snd_soc_codec *codec)
427 wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF);
431 static struct snd_soc_codec_driver soc_codec_dev_wm8776 = {
432 .probe = wm8776_probe,
433 .remove = wm8776_remove,
434 .suspend = wm8776_suspend,
435 .resume = wm8776_resume,
436 .set_bias_level = wm8776_set_bias_level,
437 .reg_cache_size = ARRAY_SIZE(wm8776_reg),
438 .reg_word_size = sizeof(u16),
439 .reg_cache_default = wm8776_reg,
441 .controls = wm8776_snd_controls,
442 .num_controls = ARRAY_SIZE(wm8776_snd_controls),
443 .dapm_widgets = wm8776_dapm_widgets,
444 .num_dapm_widgets = ARRAY_SIZE(wm8776_dapm_widgets),
445 .dapm_routes = routes,
446 .num_dapm_routes = ARRAY_SIZE(routes),
449 static const struct of_device_id wm8776_of_match[] = {
450 { .compatible = "wlf,wm8776", },
453 MODULE_DEVICE_TABLE(of, wm8776_of_match);
455 #if defined(CONFIG_SPI_MASTER)
456 static int __devinit wm8776_spi_probe(struct spi_device *spi)
458 struct wm8776_priv *wm8776;
461 wm8776 = devm_kzalloc(&spi->dev, sizeof(struct wm8776_priv),
466 wm8776->control_type = SND_SOC_SPI;
467 spi_set_drvdata(spi, wm8776);
469 ret = snd_soc_register_codec(&spi->dev,
470 &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));
475 static int __devexit wm8776_spi_remove(struct spi_device *spi)
477 snd_soc_unregister_codec(&spi->dev);
481 static struct spi_driver wm8776_spi_driver = {
484 .owner = THIS_MODULE,
485 .of_match_table = wm8776_of_match,
487 .probe = wm8776_spi_probe,
488 .remove = __devexit_p(wm8776_spi_remove),
490 #endif /* CONFIG_SPI_MASTER */
492 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
493 static __devinit int wm8776_i2c_probe(struct i2c_client *i2c,
494 const struct i2c_device_id *id)
496 struct wm8776_priv *wm8776;
499 wm8776 = devm_kzalloc(&i2c->dev, sizeof(struct wm8776_priv),
504 i2c_set_clientdata(i2c, wm8776);
505 wm8776->control_type = SND_SOC_I2C;
507 ret = snd_soc_register_codec(&i2c->dev,
508 &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai));
513 static __devexit int wm8776_i2c_remove(struct i2c_client *client)
515 snd_soc_unregister_codec(&client->dev);
519 static const struct i2c_device_id wm8776_i2c_id[] = {
520 { "wm8775", WM8775 },
521 { "wm8776", WM8776 },
524 MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id);
526 static struct i2c_driver wm8776_i2c_driver = {
529 .owner = THIS_MODULE,
530 .of_match_table = wm8776_of_match,
532 .probe = wm8776_i2c_probe,
533 .remove = __devexit_p(wm8776_i2c_remove),
534 .id_table = wm8776_i2c_id,
538 static int __init wm8776_modinit(void)
541 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
542 ret = i2c_add_driver(&wm8776_i2c_driver);
544 printk(KERN_ERR "Failed to register wm8776 I2C driver: %d\n",
548 #if defined(CONFIG_SPI_MASTER)
549 ret = spi_register_driver(&wm8776_spi_driver);
551 printk(KERN_ERR "Failed to register wm8776 SPI driver: %d\n",
557 module_init(wm8776_modinit);
559 static void __exit wm8776_exit(void)
561 #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
562 i2c_del_driver(&wm8776_i2c_driver);
564 #if defined(CONFIG_SPI_MASTER)
565 spi_unregister_driver(&wm8776_spi_driver);
568 module_exit(wm8776_exit);
570 MODULE_DESCRIPTION("ASoC WM8776 driver");
571 MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
572 MODULE_LICENSE("GPL");