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85e7652d89
linux/sound/soc/codecs/ad193x.c
Lars-Peter Clausen 85e7652d89 ASoC: Constify snd_soc_dai_ops structs 
Commit 1ee46ebd("ASoC: Make the DAI ops constant in the DAI structure")
introduced the possibility to have constant DAI ops structures, yet this is
barley used in both existing drivers and also new drivers being submitted,
although none of them modifies its DAI ops structure. The later is not
surprising since existing drivers are often used as templates for new drivers.
So this patch just constifies all existing snd_soc_dai_ops structs to eliminate
the issue altogether.

The patch was generated with the following coccinelle semantic patch:
// <smpl>
@@
identifier ops;
@@
-struct snd_soc_dai_ops ops =
+const struct snd_soc_dai_ops ops =
{ ... };
// </smpl>

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-11-23 10:40:46 +00:00

552 lines
14 KiB
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Raw Blame History

/*
* 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 "ad193x.h"
/* codec private data */
struct ad193x_priv {
struct regmap *regmap;
int sysclk;
};
/*
* 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;
if (mute)
snd_soc_update_bits(codec, AD193X_DAC_CTRL2,
AD193X_DAC_MASTER_MUTE,
AD193X_DAC_MASTER_MUTE);
else
snd_soc_update_bits(codec, AD193X_DAC_CTRL2,
AD193X_DAC_MASTER_MUTE, 0);
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, master_rate = 0;
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_codec *codec = rtd->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;
}
snd_soc_update_bits(codec, AD193X_PLL_CLK_CTRL0,
AD193X_PLL_INPUT_MASK, master_rate);
snd_soc_update_bits(codec, AD193X_DAC_CTRL2,
AD193X_DAC_WORD_LEN_MASK,
word_len << AD193X_DAC_WORD_LEN_SHFT);
snd_soc_update_bits(codec, AD193X_ADC_CTRL1,
AD193X_ADC_WORD_LEN_MASK, word_len);
return 0;
}
static const 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 */
static struct snd_soc_dai_driver ad193x_dai = {
.name = "ad193x-hifi",
.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,
};
static int ad193x_probe(struct snd_soc_codec *codec)
{
struct ad193x_priv *ad193x = snd_soc_codec_get_drvdata(codec);
struct snd_soc_dapm_context *dapm = &codec->dapm;
int ret;
codec->control_data = ad193x->regmap;
ret = snd_soc_codec_set_cache_io(codec, 0, 0, SND_SOC_REGMAP);
if (ret < 0) {
dev_err(codec->dev, "failed to set cache I/O: %d\n", ret);
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);
snd_soc_add_controls(codec, ad193x_snd_controls,
ARRAY_SIZE(ad193x_snd_controls));
snd_soc_dapm_new_controls(dapm, ad193x_dapm_widgets,
ARRAY_SIZE(ad193x_dapm_widgets));
snd_soc_dapm_add_routes(dapm, audio_paths, ARRAY_SIZE(audio_paths));
return ret;
}
static struct snd_soc_codec_driver soc_codec_dev_ad193x = {
.probe = ad193x_probe,
};
#if defined(CONFIG_SPI_MASTER)
static const struct regmap_config ad193x_spi_regmap_config = {
.val_bits = 8,
.reg_bits = 16,
.read_flag_mask = 0x09,
.write_flag_mask = 0x08,
};
static int __devinit ad193x_spi_probe(struct spi_device *spi)
{
struct ad193x_priv *ad193x;
int ret;
ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL);
if (ad193x == NULL)
return -ENOMEM;
ad193x->regmap = regmap_init_spi(spi, &ad193x_spi_regmap_config);
if (IS_ERR(ad193x->regmap)) {
ret = PTR_ERR(ad193x->regmap);
goto err_free;
}
spi_set_drvdata(spi, ad193x);
ret = snd_soc_register_codec(&spi->dev,
&soc_codec_dev_ad193x, &ad193x_dai, 1);
if (ret < 0)
goto err_regmap_exit;
return 0;
err_regmap_exit:
regmap_exit(ad193x->regmap);
err_free:
kfree(ad193x);
return ret;
}
static int __devexit ad193x_spi_remove(struct spi_device *spi)
{
struct ad193x_priv *ad193x = spi_get_drvdata(spi);
snd_soc_unregister_codec(&spi->dev);
regmap_exit(ad193x->regmap);
kfree(ad193x);
return 0;
}
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 regmap_config ad193x_i2c_regmap_config = {
.val_bits = 8,
.reg_bits = 8,
};
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)
{
struct ad193x_priv *ad193x;
int ret;
ad193x = kzalloc(sizeof(struct ad193x_priv), GFP_KERNEL);
if (ad193x == NULL)
return -ENOMEM;
ad193x->regmap = regmap_init_i2c(client, &ad193x_i2c_regmap_config);
if (IS_ERR(ad193x->regmap)) {
ret = PTR_ERR(ad193x->regmap);
goto err_free;
}
i2c_set_clientdata(client, ad193x);
ret = snd_soc_register_codec(&client->dev,
&soc_codec_dev_ad193x, &ad193x_dai, 1);
if (ret < 0)
goto err_regmap_exit;
return 0;
err_regmap_exit:
regmap_exit(ad193x->regmap);
err_free:
kfree(ad193x);
return ret;
}
static int __devexit ad193x_i2c_remove(struct i2c_client *client)
{
struct ad193x_priv *ad193x = i2c_get_clientdata(client);
snd_soc_unregister_codec(&client->dev);
regmap_exit(ad193x->regmap);
kfree(ad193x);
return 0;
}
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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