From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 5 Aug 2015 17:04:01 -0300 Subject: Initial import --- sound/soc/codecs/wm8776.c | 583 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 583 insertions(+) create mode 100644 sound/soc/codecs/wm8776.c (limited to 'sound/soc/codecs/wm8776.c') diff --git a/sound/soc/codecs/wm8776.c b/sound/soc/codecs/wm8776.c new file mode 100644 index 000000000..c13050b77 --- /dev/null +++ b/sound/soc/codecs/wm8776.c @@ -0,0 +1,583 @@ +/* + * wm8776.c -- WM8776 ALSA SoC Audio driver + * + * Copyright 2009-12 Wolfson Microelectronics plc + * + * Author: Mark Brown + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * TODO: Input ALC/limiter support + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "wm8776.h" + +enum wm8776_chip_type { + WM8775 = 1, + WM8776, +}; + +/* codec private data */ +struct wm8776_priv { + struct regmap *regmap; + int sysclk[2]; +}; + +static const struct reg_default wm8776_reg_defaults[] = { + { 0, 0x79 }, + { 1, 0x79 }, + { 2, 0x79 }, + { 3, 0xff }, + { 4, 0xff }, + { 5, 0xff }, + { 6, 0x00 }, + { 7, 0x90 }, + { 8, 0x00 }, + { 9, 0x00 }, + { 10, 0x22 }, + { 11, 0x22 }, + { 12, 0x22 }, + { 13, 0x08 }, + { 14, 0xcf }, + { 15, 0xcf }, + { 16, 0x7b }, + { 17, 0x00 }, + { 18, 0x32 }, + { 19, 0x00 }, + { 20, 0xa6 }, + { 21, 0x01 }, + { 22, 0x01 }, +}; + +static bool wm8776_volatile(struct device *dev, unsigned int reg) +{ + switch (reg) { + case WM8776_RESET: + return true; + default: + return false; + } +} + +static int wm8776_reset(struct snd_soc_codec *codec) +{ + return snd_soc_write(codec, WM8776_RESET, 0); +} + +static const DECLARE_TLV_DB_SCALE(hp_tlv, -12100, 100, 1); +static const DECLARE_TLV_DB_SCALE(dac_tlv, -12750, 50, 1); +static const DECLARE_TLV_DB_SCALE(adc_tlv, -10350, 50, 1); + +static const struct snd_kcontrol_new wm8776_snd_controls[] = { +SOC_DOUBLE_R_TLV("Headphone Playback Volume", WM8776_HPLVOL, WM8776_HPRVOL, + 0, 127, 0, hp_tlv), +SOC_DOUBLE_R_TLV("Digital Playback Volume", WM8776_DACLVOL, WM8776_DACRVOL, + 0, 255, 0, dac_tlv), +SOC_SINGLE("Digital Playback ZC Switch", WM8776_DACCTRL1, 0, 1, 0), + +SOC_SINGLE("Deemphasis Switch", WM8776_DACCTRL2, 0, 1, 0), + +SOC_DOUBLE_R_TLV("Capture Volume", WM8776_ADCLVOL, WM8776_ADCRVOL, + 0, 255, 0, adc_tlv), +SOC_DOUBLE("Capture Switch", WM8776_ADCMUX, 7, 6, 1, 1), +SOC_DOUBLE_R("Capture ZC Switch", WM8776_ADCLVOL, WM8776_ADCRVOL, 8, 1, 0), +SOC_SINGLE("Capture HPF Switch", WM8776_ADCIFCTRL, 8, 1, 1), +}; + +static const struct snd_kcontrol_new inmix_controls[] = { +SOC_DAPM_SINGLE("AIN1 Switch", WM8776_ADCMUX, 0, 1, 0), +SOC_DAPM_SINGLE("AIN2 Switch", WM8776_ADCMUX, 1, 1, 0), +SOC_DAPM_SINGLE("AIN3 Switch", WM8776_ADCMUX, 2, 1, 0), +SOC_DAPM_SINGLE("AIN4 Switch", WM8776_ADCMUX, 3, 1, 0), +SOC_DAPM_SINGLE("AIN5 Switch", WM8776_ADCMUX, 4, 1, 0), +}; + +static const struct snd_kcontrol_new outmix_controls[] = { +SOC_DAPM_SINGLE("DAC Switch", WM8776_OUTMUX, 0, 1, 0), +SOC_DAPM_SINGLE("AUX Switch", WM8776_OUTMUX, 1, 1, 0), +SOC_DAPM_SINGLE("Bypass Switch", WM8776_OUTMUX, 2, 1, 0), +}; + +static const struct snd_soc_dapm_widget wm8776_dapm_widgets[] = { +SND_SOC_DAPM_INPUT("AUX"), + +SND_SOC_DAPM_INPUT("AIN1"), +SND_SOC_DAPM_INPUT("AIN2"), +SND_SOC_DAPM_INPUT("AIN3"), +SND_SOC_DAPM_INPUT("AIN4"), +SND_SOC_DAPM_INPUT("AIN5"), + +SND_SOC_DAPM_MIXER("Input Mixer", WM8776_PWRDOWN, 6, 1, + inmix_controls, ARRAY_SIZE(inmix_controls)), + +SND_SOC_DAPM_ADC("ADC", "Capture", WM8776_PWRDOWN, 1, 1), +SND_SOC_DAPM_DAC("DAC", "Playback", WM8776_PWRDOWN, 2, 1), + +SND_SOC_DAPM_MIXER("Output Mixer", SND_SOC_NOPM, 0, 0, + outmix_controls, ARRAY_SIZE(outmix_controls)), + +SND_SOC_DAPM_PGA("Headphone PGA", WM8776_PWRDOWN, 3, 1, NULL, 0), + +SND_SOC_DAPM_OUTPUT("VOUT"), + +SND_SOC_DAPM_OUTPUT("HPOUTL"), +SND_SOC_DAPM_OUTPUT("HPOUTR"), +}; + +static const struct snd_soc_dapm_route routes[] = { + { "Input Mixer", "AIN1 Switch", "AIN1" }, + { "Input Mixer", "AIN2 Switch", "AIN2" }, + { "Input Mixer", "AIN3 Switch", "AIN3" }, + { "Input Mixer", "AIN4 Switch", "AIN4" }, + { "Input Mixer", "AIN5 Switch", "AIN5" }, + + { "ADC", NULL, "Input Mixer" }, + + { "Output Mixer", "DAC Switch", "DAC" }, + { "Output Mixer", "AUX Switch", "AUX" }, + { "Output Mixer", "Bypass Switch", "Input Mixer" }, + + { "VOUT", NULL, "Output Mixer" }, + + { "Headphone PGA", NULL, "Output Mixer" }, + + { "HPOUTL", NULL, "Headphone PGA" }, + { "HPOUTR", NULL, "Headphone PGA" }, +}; + +static int wm8776_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct snd_soc_codec *codec = dai->codec; + int reg, iface, master; + + switch (dai->driver->id) { + case WM8776_DAI_DAC: + reg = WM8776_DACIFCTRL; + master = 0x80; + break; + case WM8776_DAI_ADC: + reg = WM8776_ADCIFCTRL; + master = 0x100; + break; + default: + return -EINVAL; + } + + iface = 0; + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: + break; + case SND_SOC_DAIFMT_CBS_CFS: + master = 0; + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + iface |= 0x0002; + break; + case SND_SOC_DAIFMT_RIGHT_J: + break; + case SND_SOC_DAIFMT_LEFT_J: + iface |= 0x0001; + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + break; + case SND_SOC_DAIFMT_IB_IF: + iface |= 0x00c; + break; + case SND_SOC_DAIFMT_IB_NF: + iface |= 0x008; + break; + case SND_SOC_DAIFMT_NB_IF: + iface |= 0x004; + break; + default: + return -EINVAL; + } + + /* Finally, write out the values */ + snd_soc_update_bits(codec, reg, 0xf, iface); + snd_soc_update_bits(codec, WM8776_MSTRCTRL, 0x180, master); + + return 0; +} + +static int mclk_ratios[] = { + 128, + 192, + 256, + 384, + 512, + 768, +}; + +static int wm8776_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct snd_soc_codec *codec = dai->codec; + struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec); + int iface_reg, iface; + int ratio_shift, master; + int i; + + switch (dai->driver->id) { + case WM8776_DAI_DAC: + iface_reg = WM8776_DACIFCTRL; + master = 0x80; + ratio_shift = 4; + break; + case WM8776_DAI_ADC: + iface_reg = WM8776_ADCIFCTRL; + master = 0x100; + ratio_shift = 0; + break; + default: + return -EINVAL; + } + + /* Set word length */ + switch (snd_pcm_format_width(params_format(params))) { + case 16: + iface = 0; + break; + case 20: + iface = 0x10; + break; + case 24: + iface = 0x20; + break; + case 32: + iface = 0x30; + break; + default: + dev_err(codec->dev, "Unsupported sample size: %i\n", + snd_pcm_format_width(params_format(params))); + return -EINVAL; + } + + /* Only need to set MCLK/LRCLK ratio if we're master */ + if (snd_soc_read(codec, WM8776_MSTRCTRL) & master) { + for (i = 0; i < ARRAY_SIZE(mclk_ratios); i++) { + if (wm8776->sysclk[dai->driver->id] / params_rate(params) + == mclk_ratios[i]) + break; + } + + if (i == ARRAY_SIZE(mclk_ratios)) { + dev_err(codec->dev, + "Unable to configure MCLK ratio %d/%d\n", + wm8776->sysclk[dai->driver->id], params_rate(params)); + return -EINVAL; + } + + dev_dbg(codec->dev, "MCLK is %dfs\n", mclk_ratios[i]); + + snd_soc_update_bits(codec, WM8776_MSTRCTRL, + 0x7 << ratio_shift, i << ratio_shift); + } else { + dev_dbg(codec->dev, "DAI in slave mode\n"); + } + + snd_soc_update_bits(codec, iface_reg, 0x30, iface); + + return 0; +} + +static int wm8776_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_codec *codec = dai->codec; + + return snd_soc_write(codec, WM8776_DACMUTE, !!mute); +} + +static int wm8776_set_sysclk(struct snd_soc_dai *dai, + int clk_id, unsigned int freq, int dir) +{ + struct snd_soc_codec *codec = dai->codec; + struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec); + + if (WARN_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk))) + return -EINVAL; + + wm8776->sysclk[dai->driver->id] = freq; + + return 0; +} + +static int wm8776_set_bias_level(struct snd_soc_codec *codec, + enum snd_soc_bias_level level) +{ + struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec); + + switch (level) { + case SND_SOC_BIAS_ON: + break; + case SND_SOC_BIAS_PREPARE: + break; + case SND_SOC_BIAS_STANDBY: + if (codec->dapm.bias_level == SND_SOC_BIAS_OFF) { + regcache_sync(wm8776->regmap); + + /* Disable the global powerdown; DAPM does the rest */ + snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 0); + } + + break; + case SND_SOC_BIAS_OFF: + snd_soc_update_bits(codec, WM8776_PWRDOWN, 1, 1); + break; + } + + codec->dapm.bias_level = level; + return 0; +} + +#define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ + SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) + +static const struct snd_soc_dai_ops wm8776_dac_ops = { + .digital_mute = wm8776_mute, + .hw_params = wm8776_hw_params, + .set_fmt = wm8776_set_fmt, + .set_sysclk = wm8776_set_sysclk, +}; + +static const struct snd_soc_dai_ops wm8776_adc_ops = { + .hw_params = wm8776_hw_params, + .set_fmt = wm8776_set_fmt, + .set_sysclk = wm8776_set_sysclk, +}; + +static struct snd_soc_dai_driver wm8776_dai[] = { + { + .name = "wm8776-hifi-playback", + .id = WM8776_DAI_DAC, + .playback = { + .stream_name = "Playback", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_CONTINUOUS, + .rate_min = 32000, + .rate_max = 192000, + .formats = WM8776_FORMATS, + }, + .ops = &wm8776_dac_ops, + }, + { + .name = "wm8776-hifi-capture", + .id = WM8776_DAI_ADC, + .capture = { + .stream_name = "Capture", + .channels_min = 2, + .channels_max = 2, + .rates = SNDRV_PCM_RATE_CONTINUOUS, + .rate_min = 32000, + .rate_max = 96000, + .formats = WM8776_FORMATS, + }, + .ops = &wm8776_adc_ops, + }, +}; + +static int wm8776_probe(struct snd_soc_codec *codec) +{ + int ret = 0; + + ret = wm8776_reset(codec); + if (ret < 0) { + dev_err(codec->dev, "Failed to issue reset: %d\n", ret); + return ret; + } + + /* Latch the update bits; right channel only since we always + * update both. */ + snd_soc_update_bits(codec, WM8776_HPRVOL, 0x100, 0x100); + snd_soc_update_bits(codec, WM8776_DACRVOL, 0x100, 0x100); + + return ret; +} + +static struct snd_soc_codec_driver soc_codec_dev_wm8776 = { + .probe = wm8776_probe, + .set_bias_level = wm8776_set_bias_level, + .suspend_bias_off = true, + + .controls = wm8776_snd_controls, + .num_controls = ARRAY_SIZE(wm8776_snd_controls), + .dapm_widgets = wm8776_dapm_widgets, + .num_dapm_widgets = ARRAY_SIZE(wm8776_dapm_widgets), + .dapm_routes = routes, + .num_dapm_routes = ARRAY_SIZE(routes), +}; + +static const struct of_device_id wm8776_of_match[] = { + { .compatible = "wlf,wm8776", }, + { } +}; +MODULE_DEVICE_TABLE(of, wm8776_of_match); + +static const struct regmap_config wm8776_regmap = { + .reg_bits = 7, + .val_bits = 9, + .max_register = WM8776_RESET, + + .reg_defaults = wm8776_reg_defaults, + .num_reg_defaults = ARRAY_SIZE(wm8776_reg_defaults), + .cache_type = REGCACHE_RBTREE, + + .volatile_reg = wm8776_volatile, +}; + +#if defined(CONFIG_SPI_MASTER) +static int wm8776_spi_probe(struct spi_device *spi) +{ + struct wm8776_priv *wm8776; + int ret; + + wm8776 = devm_kzalloc(&spi->dev, sizeof(struct wm8776_priv), + GFP_KERNEL); + if (wm8776 == NULL) + return -ENOMEM; + + wm8776->regmap = devm_regmap_init_spi(spi, &wm8776_regmap); + if (IS_ERR(wm8776->regmap)) + return PTR_ERR(wm8776->regmap); + + spi_set_drvdata(spi, wm8776); + + ret = snd_soc_register_codec(&spi->dev, + &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai)); + + return ret; +} + +static int wm8776_spi_remove(struct spi_device *spi) +{ + snd_soc_unregister_codec(&spi->dev); + return 0; +} + +static struct spi_driver wm8776_spi_driver = { + .driver = { + .name = "wm8776", + .owner = THIS_MODULE, + .of_match_table = wm8776_of_match, + }, + .probe = wm8776_spi_probe, + .remove = wm8776_spi_remove, +}; +#endif /* CONFIG_SPI_MASTER */ + +#if IS_ENABLED(CONFIG_I2C) +static int wm8776_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct wm8776_priv *wm8776; + int ret; + + wm8776 = devm_kzalloc(&i2c->dev, sizeof(struct wm8776_priv), + GFP_KERNEL); + if (wm8776 == NULL) + return -ENOMEM; + + wm8776->regmap = devm_regmap_init_i2c(i2c, &wm8776_regmap); + if (IS_ERR(wm8776->regmap)) + return PTR_ERR(wm8776->regmap); + + i2c_set_clientdata(i2c, wm8776); + + ret = snd_soc_register_codec(&i2c->dev, + &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai)); + + return ret; +} + +static int wm8776_i2c_remove(struct i2c_client *client) +{ + snd_soc_unregister_codec(&client->dev); + return 0; +} + +static const struct i2c_device_id wm8776_i2c_id[] = { + { "wm8775", WM8775 }, + { "wm8776", WM8776 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, wm8776_i2c_id); + +static struct i2c_driver wm8776_i2c_driver = { + .driver = { + .name = "wm8776", + .owner = THIS_MODULE, + .of_match_table = wm8776_of_match, + }, + .probe = wm8776_i2c_probe, + .remove = wm8776_i2c_remove, + .id_table = wm8776_i2c_id, +}; +#endif + +static int __init wm8776_modinit(void) +{ + int ret = 0; +#if IS_ENABLED(CONFIG_I2C) + ret = i2c_add_driver(&wm8776_i2c_driver); + if (ret != 0) { + printk(KERN_ERR "Failed to register wm8776 I2C driver: %d\n", + ret); + } +#endif +#if defined(CONFIG_SPI_MASTER) + ret = spi_register_driver(&wm8776_spi_driver); + if (ret != 0) { + printk(KERN_ERR "Failed to register wm8776 SPI driver: %d\n", + ret); + } +#endif + return ret; +} +module_init(wm8776_modinit); + +static void __exit wm8776_exit(void) +{ +#if IS_ENABLED(CONFIG_I2C) + i2c_del_driver(&wm8776_i2c_driver); +#endif +#if defined(CONFIG_SPI_MASTER) + spi_unregister_driver(&wm8776_spi_driver); +#endif +} +module_exit(wm8776_exit); + +MODULE_DESCRIPTION("ASoC WM8776 driver"); +MODULE_AUTHOR("Mark Brown "); +MODULE_LICENSE("GPL"); -- cgit v1.2.3-54-g00ecf