| /* |
| * wm8776.c -- WM8776 ALSA SoC Audio driver |
| * |
| * Copyright 2009 Wolfson Microelectronics plc |
| * |
| * Author: Mark Brown <broonie@opensource.wolfsonmicro.com> |
| * |
| * 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 <linux/module.h> |
| #include <linux/moduleparam.h> |
| #include <linux/init.h> |
| #include <linux/delay.h> |
| #include <linux/pm.h> |
| #include <linux/i2c.h> |
| #include <linux/of_device.h> |
| #include <linux/platform_device.h> |
| #include <linux/spi/spi.h> |
| #include <linux/slab.h> |
| #include <sound/core.h> |
| #include <sound/pcm.h> |
| #include <sound/pcm_params.h> |
| #include <sound/soc.h> |
| #include <sound/initval.h> |
| #include <sound/tlv.h> |
| |
| #include "wm8776.h" |
| |
| /* codec private data */ |
| struct wm8776_priv { |
| enum snd_soc_control_type control_type; |
| int sysclk[2]; |
| }; |
| |
| static const u16 wm8776_reg[WM8776_CACHEREGNUM] = { |
| 0x79, 0x79, 0x79, 0xff, 0xff, /* 4 */ |
| 0xff, 0x00, 0x90, 0x00, 0x00, /* 9 */ |
| 0x22, 0x22, 0x22, 0x08, 0xcf, /* 14 */ |
| 0xcf, 0x7b, 0x00, 0x32, 0x00, /* 19 */ |
| 0xa6, 0x01, 0x01 |
| }; |
| |
| 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; |
| |
| iface = 0; |
| |
| 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 (params_format(params)) { |
| case SNDRV_PCM_FORMAT_S16_LE: |
| break; |
| case SNDRV_PCM_FORMAT_S20_3LE: |
| iface |= 0x10; |
| break; |
| case SNDRV_PCM_FORMAT_S24_LE: |
| iface |= 0x20; |
| break; |
| case SNDRV_PCM_FORMAT_S32_LE: |
| iface |= 0x30; |
| break; |
| } |
| |
| /* 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); |
| |
| BUG_ON(dai->driver->id >= ARRAY_SIZE(wm8776->sysclk)); |
| |
| 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) |
| { |
| 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) { |
| /* 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_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ |
| SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_88200 |\ |
| SNDRV_PCM_RATE_96000) |
| |
| |
| #define WM8776_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE |\ |
| SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE) |
| |
| static 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 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 = WM8776_RATES, |
| .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 = WM8776_RATES, |
| .formats = WM8776_FORMATS, |
| }, |
| .ops = &wm8776_adc_ops, |
| }, |
| }; |
| |
| #ifdef CONFIG_PM |
| static int wm8776_suspend(struct snd_soc_codec *codec, pm_message_t state) |
| { |
| wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| |
| return 0; |
| } |
| |
| static int wm8776_resume(struct snd_soc_codec *codec) |
| { |
| int i; |
| u8 data[2]; |
| u16 *cache = codec->reg_cache; |
| |
| /* Sync reg_cache with the hardware */ |
| for (i = 0; i < ARRAY_SIZE(wm8776_reg); i++) { |
| if (cache[i] == wm8776_reg[i]) |
| continue; |
| data[0] = (i << 1) | ((cache[i] >> 8) & 0x0001); |
| data[1] = cache[i] & 0x00ff; |
| codec->hw_write(codec->control_data, data, 2); |
| } |
| |
| wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| |
| return 0; |
| } |
| #else |
| #define wm8776_suspend NULL |
| #define wm8776_resume NULL |
| #endif |
| |
| static int wm8776_probe(struct snd_soc_codec *codec) |
| { |
| struct wm8776_priv *wm8776 = snd_soc_codec_get_drvdata(codec); |
| struct snd_soc_dapm_context *dapm = &codec->dapm; |
| int ret = 0; |
| |
| ret = snd_soc_codec_set_cache_io(codec, 7, 9, wm8776->control_type); |
| if (ret < 0) { |
| dev_err(codec->dev, "Failed to set cache I/O: %d\n", ret); |
| return ret; |
| } |
| |
| ret = wm8776_reset(codec); |
| if (ret < 0) { |
| dev_err(codec->dev, "Failed to issue reset: %d\n", ret); |
| return ret; |
| } |
| |
| wm8776_set_bias_level(codec, SND_SOC_BIAS_STANDBY); |
| |
| /* 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); |
| |
| snd_soc_add_controls(codec, wm8776_snd_controls, |
| ARRAY_SIZE(wm8776_snd_controls)); |
| snd_soc_dapm_new_controls(dapm, wm8776_dapm_widgets, |
| ARRAY_SIZE(wm8776_dapm_widgets)); |
| snd_soc_dapm_add_routes(dapm, routes, ARRAY_SIZE(routes)); |
| |
| return ret; |
| } |
| |
| /* power down chip */ |
| static int wm8776_remove(struct snd_soc_codec *codec) |
| { |
| wm8776_set_bias_level(codec, SND_SOC_BIAS_OFF); |
| return 0; |
| } |
| |
| static struct snd_soc_codec_driver soc_codec_dev_wm8776 = { |
| .probe = wm8776_probe, |
| .remove = wm8776_remove, |
| .suspend = wm8776_suspend, |
| .resume = wm8776_resume, |
| .set_bias_level = wm8776_set_bias_level, |
| .reg_cache_size = ARRAY_SIZE(wm8776_reg), |
| .reg_word_size = sizeof(u16), |
| .reg_cache_default = wm8776_reg, |
| }; |
| |
| static const struct of_device_id wm8776_of_match[] = { |
| { .compatible = "wlf,wm8776", }, |
| { } |
| }; |
| MODULE_DEVICE_TABLE(of, wm8776_of_match); |
| |
| #if defined(CONFIG_SPI_MASTER) |
| static int __devinit wm8776_spi_probe(struct spi_device *spi) |
| { |
| struct wm8776_priv *wm8776; |
| int ret; |
| |
| wm8776 = kzalloc(sizeof(struct wm8776_priv), GFP_KERNEL); |
| if (wm8776 == NULL) |
| return -ENOMEM; |
| |
| wm8776->control_type = SND_SOC_SPI; |
| spi_set_drvdata(spi, wm8776); |
| |
| ret = snd_soc_register_codec(&spi->dev, |
| &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai)); |
| if (ret < 0) |
| kfree(wm8776); |
| return ret; |
| } |
| |
| static int __devexit wm8776_spi_remove(struct spi_device *spi) |
| { |
| snd_soc_unregister_codec(&spi->dev); |
| kfree(spi_get_drvdata(spi)); |
| 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 = __devexit_p(wm8776_spi_remove), |
| }; |
| #endif /* CONFIG_SPI_MASTER */ |
| |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| static __devinit int wm8776_i2c_probe(struct i2c_client *i2c, |
| const struct i2c_device_id *id) |
| { |
| struct wm8776_priv *wm8776; |
| int ret; |
| |
| wm8776 = kzalloc(sizeof(struct wm8776_priv), GFP_KERNEL); |
| if (wm8776 == NULL) |
| return -ENOMEM; |
| |
| i2c_set_clientdata(i2c, wm8776); |
| wm8776->control_type = SND_SOC_I2C; |
| |
| ret = snd_soc_register_codec(&i2c->dev, |
| &soc_codec_dev_wm8776, wm8776_dai, ARRAY_SIZE(wm8776_dai)); |
| if (ret < 0) |
| kfree(wm8776); |
| return ret; |
| } |
| |
| static __devexit int wm8776_i2c_remove(struct i2c_client *client) |
| { |
| snd_soc_unregister_codec(&client->dev); |
| kfree(i2c_get_clientdata(client)); |
| return 0; |
| } |
| |
| static const struct i2c_device_id wm8776_i2c_id[] = { |
| { "wm8776", 0 }, |
| { } |
| }; |
| 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 = __devexit_p(wm8776_i2c_remove), |
| .id_table = wm8776_i2c_id, |
| }; |
| #endif |
| |
| static int __init wm8776_modinit(void) |
| { |
| int ret = 0; |
| #if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| 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 defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) |
| 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 <broonie@opensource.wolfsonmicro.com>"); |
| MODULE_LICENSE("GPL"); |