lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

ASoC: ad1836: use soc-cache framework for codec registers access

Browse Source 
Signed-off-by: Barry Song <Barry.Song@analog.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Barry Song
2010-01-27 11:46:17 +08:00
committed by Mark Brown
parent e473b84742
commit 63b62ab0d5
2 changed files with 90 additions and 69 deletions
Download Patch File Download Diff File Expand all files Collapse all files

92
sound/soc/codecs/ad1836.c
View File

@ -171,58 +171,6 @@ static int ad1836_hw_params(struct snd_pcm_substream *substream,
return 0;
}
/*
* interface to read/write ad1836 register
*/
#define AD1836_SPI_REG_SHFT 12
#define AD1836_SPI_READ (1 << 11)
#define AD1836_SPI_VAL_MSK 0x3FF
/*
* write to the ad1836 register space
*/
static int ad1836_write_reg(struct snd_soc_codec *codec, unsigned int reg,
unsigned int value)
{
u16 *reg_cache = codec->reg_cache;
int ret = 0;
if (value != reg_cache[reg]) {
unsigned short buf;
struct spi_transfer t = {
.tx_buf = &buf,
.len = 2,
};
struct spi_message m;
buf = (reg << AD1836_SPI_REG_SHFT) |
(value & AD1836_SPI_VAL_MSK);
spi_message_init(&m);
spi_message_add_tail(&t, &m);
ret = spi_sync(codec->control_data, &m);
if (ret == 0)
reg_cache[reg] = value;
}
return ret;
}
/*
* read from the ad1836 register space cache
*/
static unsigned int ad1836_read_reg_cache(struct snd_soc_codec *codec,
unsigned int reg)
{
u16 *reg_cache = codec->reg_cache;
if (reg >= codec->reg_cache_size)
return -EINVAL;
return reg_cache[reg];
}
#ifdef CONFIG_PM
static int ad1836_soc_suspend(struct platform_device *pdev,
pm_message_t state)
@ -231,10 +179,10 @@ static int ad1836_soc_suspend(struct platform_device *pdev,
struct snd_soc_codec *codec = socdev->card->codec;
/* reset clock control mode */
u16 adc_ctrl2 = codec->read(codec, AD1836_ADC_CTRL2);
u16 adc_ctrl2 = snd_soc_read(codec, AD1836_ADC_CTRL2);
adc_ctrl2 &= ~AD1836_ADC_SERFMT_MASK;
return codec->write(codec, AD1836_ADC_CTRL2, adc_ctrl2);
return snd_soc_write(codec, AD1836_ADC_CTRL2, adc_ctrl2);
}
static int ad1836_soc_resume(struct platform_device *pdev)
@ -243,10 +191,10 @@ static int ad1836_soc_resume(struct platform_device *pdev)
struct snd_soc_codec *codec = socdev->card->codec;
/* restore clock control mode */
u16 adc_ctrl2 = codec->read(codec, AD1836_ADC_CTRL2);
u16 adc_ctrl2 = snd_soc_read(codec, AD1836_ADC_CTRL2);
adc_ctrl2 |= AD1836_ADC_AUX;
return codec->write(codec, AD1836_ADC_CTRL2, adc_ctrl2);
return snd_soc_write(codec, AD1836_ADC_CTRL2, adc_ctrl2);
}
#else
#define ad1836_soc_suspend NULL
@ -336,32 +284,38 @@ static int ad1836_register(struct ad1836_priv *ad1836)
codec->owner = THIS_MODULE;
codec->dai = &ad1836_dai;
codec->num_dai = 1;
codec->write = ad1836_write_reg;
codec->read = ad1836_read_reg_cache;
INIT_LIST_HEAD(&codec->dapm_widgets);
INIT_LIST_HEAD(&codec->dapm_paths);
ad1836_dai.dev = codec->dev;
ad1836_codec = codec;
ret = snd_soc_codec_set_cache_io(codec, 4, 12, SND_SOC_SPI);
if (ret < 0) {
dev_err(codec->dev, "failed to set cache I/O: %d\n",
ret);
kfree(ad1836);
return ret;
}
/* default setting for ad1836 */
/* de-emphasis: 48kHz, power-on dac */
codec->write(codec, AD1836_DAC_CTRL1, 0x300);
snd_soc_write(codec, AD1836_DAC_CTRL1, 0x300);
/* unmute dac channels */
codec->write(codec, AD1836_DAC_CTRL2, 0x0);
snd_soc_write(codec, AD1836_DAC_CTRL2, 0x0);
/* high-pass filter enable, power-on adc */
codec->write(codec, AD1836_ADC_CTRL1, 0x100);
snd_soc_write(codec, AD1836_ADC_CTRL1, 0x100);
/* unmute adc channles, adc aux mode */
codec->write(codec, AD1836_ADC_CTRL2, 0x180);
snd_soc_write(codec, AD1836_ADC_CTRL2, 0x180);
/* left/right diff:PGA/MUX */
codec->write(codec, AD1836_ADC_CTRL3, 0x3A);
snd_soc_write(codec, AD1836_ADC_CTRL3, 0x3A);
/* volume */
codec->write(codec, AD1836_DAC_L1_VOL, 0x3FF);
codec->write(codec, AD1836_DAC_R1_VOL, 0x3FF);
codec->write(codec, AD1836_DAC_L2_VOL, 0x3FF);
codec->write(codec, AD1836_DAC_R2_VOL, 0x3FF);
codec->write(codec, AD1836_DAC_L3_VOL, 0x3FF);
codec->write(codec, AD1836_DAC_R3_VOL, 0x3FF);
snd_soc_write(codec, AD1836_DAC_L1_VOL, 0x3FF);
snd_soc_write(codec, AD1836_DAC_R1_VOL, 0x3FF);
snd_soc_write(codec, AD1836_DAC_L2_VOL, 0x3FF);
snd_soc_write(codec, AD1836_DAC_R2_VOL, 0x3FF);
snd_soc_write(codec, AD1836_DAC_L3_VOL, 0x3FF);
snd_soc_write(codec, AD1836_DAC_R3_VOL, 0x3FF);
ret = snd_soc_register_codec(codec);
if (ret != 0) {