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linux-stable/sound/soc/codecs/ad193x.c
Mark Brown b2c812e22d ASoC: Add indirection for CODEC private data 
One of the features of the multi CODEC work is that it embeds a struct
device in the CODEC to provide diagnostics via a sysfs class rather than
via the device tree, at which point it's much better to use the struct
device private data rather than having two places to store it. Provide
an accessor function to allow this change to be made more easily, and
update all the CODEC drivers are updated.

To ensure use of the accessor the private data structure member is
renamed, meaning that if code developed with older an older core that
still uses private_data is merged it will fail to build.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
2010-04-17 10:46:22 +09:00

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/*
* 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 {
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_reg, dac_reg;
adc_reg = 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_reg &= ~AD193X_ADC_SERFMT_MASK;
adc_reg |= AD193X_ADC_SERFMT_TDM;
break;
case SND_SOC_DAIFMT_DSP_A:
adc_reg &= ~AD193X_ADC_SERFMT_MASK;
adc_reg |= 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_reg &= ~AD193X_ADC_LEFT_HIGH;
adc_reg &= ~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_reg |= AD193X_ADC_LEFT_HIGH;
adc_reg &= ~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_reg &= ~AD193X_ADC_LEFT_HIGH;
adc_reg |= 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_reg |= AD193X_ADC_LEFT_HIGH;
adc_reg |= 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_reg |= AD193X_ADC_LCR_MASTER;
adc_reg |= 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_reg |= AD193X_ADC_LCR_MASTER;
adc_reg &= ~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_reg &= ~AD193X_ADC_LCR_MASTER;
adc_reg |= 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_reg &= ~AD193X_ADC_LCR_MASTER;
adc_reg &= ~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_CTRL2, adc_reg);
snd_soc_write(codec, AD193X_DAC_CTRL1, dac_reg);
return 0;
}
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;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_device *socdev = rtd->socdev;
struct snd_soc_codec *codec = socdev->card->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;
}
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);
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_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");
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