/* * wm8776.c -- WM8776 ALSA SoC Audio driver * * Copyright 2009 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" /* 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, }; #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-codec", .owner = THIS_MODULE, }, .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-codec", .owner = THIS_MODULE, }, .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 "); MODULE_LICENSE("GPL");