diff options
Diffstat (limited to 'sound/soc/codecs/ad193x.c')
| -rw-r--r-- | sound/soc/codecs/ad193x.c | 586 |
1 files changed, 586 insertions, 0 deletions
diff --git a/sound/soc/codecs/ad193x.c b/sound/soc/codecs/ad193x.c new file mode 100644 index 000000000000..1def75e4862f --- /dev/null +++ b/sound/soc/codecs/ad193x.c @@ -0,0 +1,586 @@ +/* + * AD193X Audio Codec driver supporting AD1936/7/8/9 + * + * Copyright 2010 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#include <linux/init.h> +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/i2c.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/initval.h> +#include <sound/soc.h> +#include <sound/tlv.h> +#include <sound/soc-dapm.h> +#include "ad193x.h" + +/* codec private data */ +struct ad193x_priv { + unsigned int sysclk; + struct snd_soc_codec codec; + u8 reg_cache[AD193X_NUM_REGS]; +}; + +/* ad193x register cache & default register settings */ +static const u8 ad193x_reg[AD193X_NUM_REGS] = { + 0, 0, 0, 0, 0, 0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, +}; + +static struct snd_soc_codec *ad193x_codec; +struct snd_soc_codec_device soc_codec_dev_ad193x; + +/* + * AD193X volume/mute/de-emphasis etc. controls + */ +static const char *ad193x_deemp[] = {"None", "48kHz", "44.1kHz", "32kHz"}; + +static const struct soc_enum ad193x_deemp_enum = + SOC_ENUM_SINGLE(AD193X_DAC_CTRL2, 1, 4, ad193x_deemp); + +static const struct snd_kcontrol_new ad193x_snd_controls[] = { + /* DAC volume control */ + SOC_DOUBLE_R("DAC1 Volume", AD193X_DAC_L1_VOL, + AD193X_DAC_R1_VOL, 0, 0xFF, 1), + SOC_DOUBLE_R("DAC2 Volume", AD193X_DAC_L2_VOL, + AD193X_DAC_R2_VOL, 0, 0xFF, 1), + SOC_DOUBLE_R("DAC3 Volume", AD193X_DAC_L3_VOL, + AD193X_DAC_R3_VOL, 0, 0xFF, 1), + SOC_DOUBLE_R("DAC4 Volume", AD193X_DAC_L4_VOL, + AD193X_DAC_R4_VOL, 0, 0xFF, 1), + + /* ADC switch control */ + SOC_DOUBLE("ADC1 Switch", AD193X_ADC_CTRL0, AD193X_ADCL1_MUTE, + AD193X_ADCR1_MUTE, 1, 1), + SOC_DOUBLE("ADC2 Switch", AD193X_ADC_CTRL0, AD193X_ADCL2_MUTE, + AD193X_ADCR2_MUTE, 1, 1), + + /* DAC switch control */ + SOC_DOUBLE("DAC1 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL1_MUTE, + AD193X_DACR1_MUTE, 1, 1), + SOC_DOUBLE("DAC2 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL2_MUTE, + AD193X_DACR2_MUTE, 1, 1), + SOC_DOUBLE("DAC3 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL3_MUTE, + AD193X_DACR3_MUTE, 1, 1), + SOC_DOUBLE("DAC4 Switch", AD193X_DAC_CHNL_MUTE, AD193X_DACL4_MUTE, + AD193X_DACR4_MUTE, 1, 1), + + /* ADC high-pass filter */ + SOC_SINGLE("ADC High Pass Filter Switch", AD193X_ADC_CTRL0, + AD193X_ADC_HIGHPASS_FILTER, 1, 0), + + /* DAC de-emphasis */ + SOC_ENUM("Playback Deemphasis", ad193x_deemp_enum), +}; + +static const struct snd_soc_dapm_widget ad193x_dapm_widgets[] = { + SND_SOC_DAPM_DAC("DAC", "Playback", AD193X_DAC_CTRL0, 0, 1), + SND_SOC_DAPM_ADC("ADC", "Capture", SND_SOC_NOPM, 0, 0), + SND_SOC_DAPM_SUPPLY("PLL_PWR", AD193X_PLL_CLK_CTRL0, 0, 1, NULL, 0), + SND_SOC_DAPM_SUPPLY("ADC_PWR", AD193X_ADC_CTRL0, 0, 1, NULL, 0), + SND_SOC_DAPM_OUTPUT("DAC1OUT"), + SND_SOC_DAPM_OUTPUT("DAC2OUT"), + SND_SOC_DAPM_OUTPUT("DAC3OUT"), + SND_SOC_DAPM_OUTPUT("DAC4OUT"), + SND_SOC_DAPM_INPUT("ADC1IN"), + SND_SOC_DAPM_INPUT("ADC2IN"), +}; + +static const struct snd_soc_dapm_route audio_paths[] = { + { "DAC", NULL, "PLL_PWR" }, + { "ADC", NULL, "PLL_PWR" }, + { "DAC", NULL, "ADC_PWR" }, + { "ADC", NULL, "ADC_PWR" }, + { "DAC1OUT", "DAC1 Switch", "DAC" }, + { "DAC2OUT", "DAC2 Switch", "DAC" }, + { "DAC3OUT", "DAC3 Switch", "DAC" }, + { "DAC4OUT", "DAC4 Switch", "DAC" }, + { "ADC", "ADC1 Switch", "ADC1IN" }, + { "ADC", "ADC2 Switch", "ADC2IN" }, +}; + +/* + * DAI ops entries + */ + +static int ad193x_mute(struct snd_soc_dai *dai, int mute) +{ + struct snd_soc_codec *codec = dai->codec; + int reg; + + reg = snd_soc_read(codec, AD193X_DAC_CTRL2); + reg = (mute > 0) ? reg | AD193X_DAC_MASTER_MUTE : reg & + (~AD193X_DAC_MASTER_MUTE); + snd_soc_write(codec, AD193X_DAC_CTRL2, reg); + + return 0; +} + +static int ad193x_set_tdm_slot(struct snd_soc_dai *dai, unsigned int tx_mask, + unsigned int rx_mask, int slots, int width) +{ + struct snd_soc_codec *codec = dai->codec; + int dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1); + int adc_reg = snd_soc_read(codec, AD193X_ADC_CTRL2); + + dac_reg &= ~AD193X_DAC_CHAN_MASK; + adc_reg &= ~AD193X_ADC_CHAN_MASK; + + switch (slots) { + case 2: + dac_reg |= AD193X_DAC_2_CHANNELS << AD193X_DAC_CHAN_SHFT; + adc_reg |= AD193X_ADC_2_CHANNELS << AD193X_ADC_CHAN_SHFT; + break; + case 4: + dac_reg |= AD193X_DAC_4_CHANNELS << AD193X_DAC_CHAN_SHFT; + adc_reg |= AD193X_ADC_4_CHANNELS << AD193X_ADC_CHAN_SHFT; + break; + case 8: + dac_reg |= AD193X_DAC_8_CHANNELS << AD193X_DAC_CHAN_SHFT; + adc_reg |= AD193X_ADC_8_CHANNELS << AD193X_ADC_CHAN_SHFT; + break; + case 16: + dac_reg |= AD193X_DAC_16_CHANNELS << AD193X_DAC_CHAN_SHFT; + adc_reg |= AD193X_ADC_16_CHANNELS << AD193X_ADC_CHAN_SHFT; + break; + default: + return -EINVAL; + } + + snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg); + snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg); + + return 0; +} + +static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai, + unsigned int fmt) +{ + struct snd_soc_codec *codec = codec_dai->codec; + int adc_reg1, adc_reg2, dac_reg; + + adc_reg1 = snd_soc_read(codec, AD193X_ADC_CTRL1); + adc_reg2 = snd_soc_read(codec, AD193X_ADC_CTRL2); + dac_reg = snd_soc_read(codec, AD193X_DAC_CTRL1); + + /* At present, the driver only support AUX ADC mode(SND_SOC_DAIFMT_I2S + * with TDM) and ADC&DAC TDM mode(SND_SOC_DAIFMT_DSP_A) + */ + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + adc_reg1 &= ~AD193X_ADC_SERFMT_MASK; + adc_reg1 |= AD193X_ADC_SERFMT_TDM; + break; + case SND_SOC_DAIFMT_DSP_A: + adc_reg1 &= ~AD193X_ADC_SERFMT_MASK; + adc_reg1 |= AD193X_ADC_SERFMT_AUX; + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: /* normal bit clock + frame */ + adc_reg2 &= ~AD193X_ADC_LEFT_HIGH; + adc_reg2 &= ~AD193X_ADC_BCLK_INV; + dac_reg &= ~AD193X_DAC_LEFT_HIGH; + dac_reg &= ~AD193X_DAC_BCLK_INV; + break; + case SND_SOC_DAIFMT_NB_IF: /* normal bclk + invert frm */ + adc_reg2 |= AD193X_ADC_LEFT_HIGH; + adc_reg2 &= ~AD193X_ADC_BCLK_INV; + dac_reg |= AD193X_DAC_LEFT_HIGH; + dac_reg &= ~AD193X_DAC_BCLK_INV; + break; + case SND_SOC_DAIFMT_IB_NF: /* invert bclk + normal frm */ + adc_reg2 &= ~AD193X_ADC_LEFT_HIGH; + adc_reg2 |= AD193X_ADC_BCLK_INV; + dac_reg &= ~AD193X_DAC_LEFT_HIGH; + dac_reg |= AD193X_DAC_BCLK_INV; + break; + + case SND_SOC_DAIFMT_IB_IF: /* invert bclk + frm */ + adc_reg2 |= AD193X_ADC_LEFT_HIGH; + adc_reg2 |= AD193X_ADC_BCLK_INV; + dac_reg |= AD193X_DAC_LEFT_HIGH; + dac_reg |= AD193X_DAC_BCLK_INV; + break; + default: + return -EINVAL; + } + + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */ + adc_reg2 |= AD193X_ADC_LCR_MASTER; + adc_reg2 |= AD193X_ADC_BCLK_MASTER; + dac_reg |= AD193X_DAC_LCR_MASTER; + dac_reg |= AD193X_DAC_BCLK_MASTER; + break; + case SND_SOC_DAIFMT_CBS_CFM: /* codec clk slave & frm master */ + adc_reg2 |= AD193X_ADC_LCR_MASTER; + adc_reg2 &= ~AD193X_ADC_BCLK_MASTER; + dac_reg |= AD193X_DAC_LCR_MASTER; + dac_reg &= ~AD193X_DAC_BCLK_MASTER; + break; + case SND_SOC_DAIFMT_CBM_CFS: /* codec clk master & frame slave */ + adc_reg2 &= ~AD193X_ADC_LCR_MASTER; + adc_reg2 |= AD193X_ADC_BCLK_MASTER; + dac_reg &= ~AD193X_DAC_LCR_MASTER; + dac_reg |= AD193X_DAC_BCLK_MASTER; + break; + case SND_SOC_DAIFMT_CBS_CFS: /* codec clk & frm slave */ + adc_reg2 &= ~AD193X_ADC_LCR_MASTER; + adc_reg2 &= ~AD193X_ADC_BCLK_MASTER; + dac_reg &= ~AD193X_DAC_LCR_MASTER; + dac_reg &= ~AD193X_DAC_BCLK_MASTER; + break; + default: + return -EINVAL; + } + + snd_soc_write(codec, AD193X_ADC_CTRL1, adc_reg1); + snd_soc_write(codec, AD193X_ADC_CTRL2, adc_reg2); + snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg); + + return 0; +} + +static int ad193x_set_dai_sysclk(struct snd_soc_dai *codec_dai, + int clk_id, unsigned int freq, int dir) +{ + struct snd_soc_codec *codec = codec_dai->codec; + struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec); + switch (freq) { + case 12288000: + case 18432000: + case 24576000: + case 36864000: + ad193x->sysclk = freq; + return 0; + } + return -EINVAL; +} + +static int ad193x_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + int word_len = 0, reg = 0, master_rate = 0; + + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_device *socdev = rtd->socdev; + struct snd_soc_codec *codec = socdev->card->codec; + struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec); + + /* bit size */ + switch (params_format(params)) { + case SNDRV_PCM_FORMAT_S16_LE: + word_len = 3; + break; + case SNDRV_PCM_FORMAT_S20_3LE: + word_len = 1; + break; + case SNDRV_PCM_FORMAT_S24_LE: + case SNDRV_PCM_FORMAT_S32_LE: + word_len = 0; + break; + } + + switch (ad193x->sysclk) { + case 12288000: + master_rate = AD193X_PLL_INPUT_256; + break; + case 18432000: + master_rate = AD193X_PLL_INPUT_384; + break; + case 24576000: + master_rate = AD193X_PLL_INPUT_512; + break; + case 36864000: + master_rate = AD193X_PLL_INPUT_768; + break; + } + + reg = snd_soc_read(codec, AD193X_PLL_CLK_CTRL0); + reg = (reg & AD193X_PLL_INPUT_MASK) | master_rate; + snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, reg); + + reg = snd_soc_read(codec, AD193X_DAC_CTRL2); + reg = (reg & (~AD193X_DAC_WORD_LEN_MASK)) | word_len; + snd_soc_write(codec, AD193X_DAC_CTRL2, reg); + + reg = snd_soc_read(codec, AD193X_ADC_CTRL1); + reg = (reg & (~AD193X_ADC_WORD_LEN_MASK)) | word_len; + snd_soc_write(codec, AD193X_ADC_CTRL1, reg); + + return 0; +} + +static int ad193x_bus_probe(struct device *dev, void *ctrl_data, int bus_type) +{ + struct snd_soc_codec *codec; + struct ad193x_priv *ad193x; + int ret; + + if (ad193x_codec) { + dev_err(dev, "Another ad193x is registered\n"); + return -EINVAL; + } + + ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL); + if (ad193x == NULL) + return -ENOMEM; + + dev_set_drvdata(dev, ad193x); + + codec = &ad193x->codec; + mutex_init(&codec->mutex); + codec->control_data = ctrl_data; + codec->dev = dev; + snd_soc_codec_set_drvdata(codec, ad193x); + codec->reg_cache = ad193x->reg_cache; + codec->reg_cache_size = AD193X_NUM_REGS; + codec->name = "AD193X"; + codec->owner = THIS_MODULE; + codec->dai = &ad193x_dai; + codec->num_dai = 1; + INIT_LIST_HEAD(&codec->dapm_widgets); + INIT_LIST_HEAD(&codec->dapm_paths); + + ad193x_dai.dev = codec->dev; + ad193x_codec = codec; + + memcpy(codec->reg_cache, ad193x_reg, AD193X_NUM_REGS); + + if (bus_type == SND_SOC_I2C) + ret = snd_soc_codec_set_cache_io(codec, 8, 8, bus_type); + else + ret = snd_soc_codec_set_cache_io(codec, 16, 8, bus_type); + if (ret < 0) { + dev_err(codec->dev, "failed to set cache I/O: %d\n", + ret); + kfree(ad193x); + return ret; + } + + /* default setting for ad193x */ + + /* unmute dac channels */ + snd_soc_write(codec, AD193X_DAC_CHNL_MUTE, 0x0); + /* de-emphasis: 48kHz, powedown dac */ + snd_soc_write(codec, AD193X_DAC_CTRL2, 0x1A); + /* powerdown dac, dac in tdm mode */ + snd_soc_write(codec, AD193X_DAC_CTRL0, 0x41); + /* high-pass filter enable */ + snd_soc_write(codec, AD193X_ADC_CTRL0, 0x3); + /* sata delay=1, adc aux mode */ + snd_soc_write(codec, AD193X_ADC_CTRL1, 0x43); + /* pll input: mclki/xi */ + snd_soc_write(codec, AD193X_PLL_CLK_CTRL0, 0x99); /* mclk=24.576Mhz: 0x9D; mclk=12.288Mhz: 0x99 */ + snd_soc_write(codec, AD193X_PLL_CLK_CTRL1, 0x04); + ad193x->sysclk = 12288000; + + ret = snd_soc_register_codec(codec); + if (ret != 0) { + dev_err(codec->dev, "Failed to register codec: %d\n", ret); + kfree(ad193x); + return ret; + } + + ret = snd_soc_register_dai(&ad193x_dai); + if (ret != 0) { + dev_err(codec->dev, "Failed to register DAI: %d\n", ret); + snd_soc_unregister_codec(codec); + kfree(ad193x); + return ret; + } + + return 0; +} + +static int ad193x_bus_remove(struct device *dev) +{ + struct ad193x_priv *ad193x = dev_get_drvdata(dev); + + snd_soc_unregister_dai(&ad193x_dai); + snd_soc_unregister_codec(&ad193x->codec); + kfree(ad193x); + ad193x_codec = NULL; + + return 0; +} + +static struct snd_soc_dai_ops ad193x_dai_ops = { + .hw_params = ad193x_hw_params, + .digital_mute = ad193x_mute, + .set_tdm_slot = ad193x_set_tdm_slot, + .set_sysclk = ad193x_set_dai_sysclk, + .set_fmt = ad193x_set_dai_fmt, +}; + +/* codec DAI instance */ +struct snd_soc_dai ad193x_dai = { + .name = "AD193X", + .playback = { + .stream_name = "Playback", + .channels_min = 2, + .channels_max = 8, + .rates = SNDRV_PCM_RATE_48000, + .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, + }, + .capture = { + .stream_name = "Capture", + .channels_min = 2, + .channels_max = 4, + .rates = SNDRV_PCM_RATE_48000, + .formats = SNDRV_PCM_FMTBIT_S32_LE | SNDRV_PCM_FMTBIT_S16_LE | + SNDRV_PCM_FMTBIT_S20_3LE | SNDRV_PCM_FMTBIT_S24_LE, + }, + .ops = &ad193x_dai_ops, +}; +EXPORT_SYMBOL_GPL(ad193x_dai); + +static int ad193x_probe(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + struct snd_soc_codec *codec; + int ret = 0; + + if (ad193x_codec == NULL) { + dev_err(&pdev->dev, "Codec device not registered\n"); + return -ENODEV; + } + + socdev->card->codec = ad193x_codec; + codec = ad193x_codec; + + /* register pcms */ + ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); + if (ret < 0) { + dev_err(codec->dev, "failed to create pcms: %d\n", ret); + goto pcm_err; + } + + snd_soc_add_controls(codec, ad193x_snd_controls, + ARRAY_SIZE(ad193x_snd_controls)); + snd_soc_dapm_new_controls(codec, ad193x_dapm_widgets, + ARRAY_SIZE(ad193x_dapm_widgets)); + snd_soc_dapm_add_routes(codec, audio_paths, ARRAY_SIZE(audio_paths)); + +pcm_err: + return ret; +} + +/* power down chip */ +static int ad193x_remove(struct platform_device *pdev) +{ + struct snd_soc_device *socdev = platform_get_drvdata(pdev); + + snd_soc_free_pcms(socdev); + snd_soc_dapm_free(socdev); + + return 0; +} + +struct snd_soc_codec_device soc_codec_dev_ad193x = { + .probe = ad193x_probe, + .remove = ad193x_remove, +}; +EXPORT_SYMBOL_GPL(soc_codec_dev_ad193x); + +#if defined(CONFIG_SPI_MASTER) +static int __devinit ad193x_spi_probe(struct spi_device *spi) +{ + return ad193x_bus_probe(&spi->dev, spi, SND_SOC_SPI); +} + +static int __devexit ad193x_spi_remove(struct spi_device *spi) +{ + return ad193x_bus_remove(&spi->dev); +} + +static struct spi_driver ad193x_spi_driver = { + .driver = { + .name = "ad193x", + .owner = THIS_MODULE, + }, + .probe = ad193x_spi_probe, + .remove = __devexit_p(ad193x_spi_remove), +}; +#endif + +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) +static const struct i2c_device_id ad193x_id[] = { + { "ad1936", 0 }, + { "ad1937", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, ad193x_id); + +static int __devinit ad193x_i2c_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + return ad193x_bus_probe(&client->dev, client, SND_SOC_I2C); +} + +static int __devexit ad193x_i2c_remove(struct i2c_client *client) +{ + return ad193x_bus_remove(&client->dev); +} + +static struct i2c_driver ad193x_i2c_driver = { + .driver = { + .name = "ad193x", + }, + .probe = ad193x_i2c_probe, + .remove = __devexit_p(ad193x_i2c_remove), + .id_table = ad193x_id, +}; +#endif + +static int __init ad193x_modinit(void) +{ + int ret; + +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) + ret = i2c_add_driver(&ad193x_i2c_driver); + if (ret != 0) { + printk(KERN_ERR "Failed to register AD193X I2C driver: %d\n", + ret); + } +#endif + +#if defined(CONFIG_SPI_MASTER) + ret = spi_register_driver(&ad193x_spi_driver); + if (ret != 0) { + printk(KERN_ERR "Failed to register AD193X SPI driver: %d\n", + ret); + } +#endif + return ret; +} +module_init(ad193x_modinit); + +static void __exit ad193x_modexit(void) +{ +#if defined(CONFIG_SPI_MASTER) + spi_unregister_driver(&ad193x_spi_driver); +#endif + +#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE) + i2c_del_driver(&ad193x_i2c_driver); +#endif +} +module_exit(ad193x_modexit); + +MODULE_DESCRIPTION("ASoC ad193x driver"); +MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>"); +MODULE_LICENSE("GPL"); |