static int ak5702_set_bias_level(struct snd_soc_codec *codec,
enum snd_soc_bias_level level)
{
u8 reg = 0;
switch (level) {
case SND_SOC_BIAS_ON:
case SND_SOC_BIAS_PREPARE:
reg = ak5702_read_reg_cache(codec, AK5702_PM1);
ak5702_write(codec, AK5702_PM1, reg | AK5702_PM1_PMVCM);
reg = ak5702_read_reg_cache(codec, AK5702_PLL1);
reg = reg | AK5702_PLL1_POWERUP | AK5702_PLL1_MASTER;
ak5702_write(codec, AK5702_PLL1, reg);
break;
case SND_SOC_BIAS_STANDBY:
reg = ak5702_read_reg_cache(codec, AK5702_PM1);
ak5702_write(codec, AK5702_PM1, reg | AK5702_PM1_PMVCM);
reg = ak5702_read_reg_cache(codec, AK5702_PLL1);
ak5702_write(codec, AK5702_PLL1, reg & (~AK5702_PLL1_POWERUP));
break;
case SND_SOC_BIAS_OFF:
reg = ak5702_read_reg_cache(codec, AK5702_PM1);
ak5702_write(codec, AK5702_PM1, reg & (~AK5702_PM1_PMVCM));
break;
}
codec->bias_level = level;
return 0;
}
static int ak5702_set_dai_clkdiv(struct snd_soc_dai *codec_dai,
int div_id, int div)
{
struct snd_soc_codec *codec = codec_dai->codec;
u8 reg = 0;
if (div_id == AK5702_BCLK_CLKDIV) {
reg = ak5702_read_reg_cache(codec, AK5702_FS1);
switch (div) {
case AK5702_BCLK_DIV_32:
reg &= (~AK5702_FS1_BCKO_MASK);
reg |= AK5702_FS1_BCKO_32FS;
ak5702_write(codec, AK5702_FS1, reg);
break;
case AK5702_BCLK_DIV_64:
reg &= (~AK5702_FS1_BCKO_MASK);
reg |= AK5702_FS1_BCKO_64FS;
ak5702_write(codec, AK5702_FS1, reg);
break;
default:
return -EINVAL;
}
}
return 0;
}
static int ak5702_set_dai_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt)
{
struct snd_soc_codec *codec = codec_dai->codec;
u8 fmt1 = 0;
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
fmt1 = AK5702_FMT1_I2S;
break;
case SND_SOC_DAIFMT_LEFT_J:
fmt1 = AK5702_FMT1_MSB;
break;
default:
return -EINVAL;
}
ak5702_write(codec, AK5702_FMT1, fmt1);
ak5702_write(codec, AK5702_FMT2, AK5702_FMT2_STEREO);
return 0;
}
static int ak5702_set_dai_pll(struct snd_soc_dai *codec_dai, int pll_id,
int source, unsigned int freq_in,
unsigned int freq_out)
{
struct snd_soc_codec *codec = codec_dai->codec;
u8 reg = 0;
reg = ak5702_read_reg_cache(codec, AK5702_PLL1);
switch (pll_id) {
case AK5702_PLL_POWERDOWN:
reg &= (~AK5702_PLL1_PM_MASK);
reg |= AK5702_PLL1_POWERDOWN;
break;
case AK5702_PLL_MASTER:
reg &= (~AK5702_PLL1_MODE_MASK);
reg |= AK5702_PLL1_MASTER;
reg |= AK5702_PLL1_POWERUP;
break;
case AK5702_PLL_SLAVE:
reg &= (~AK5702_PLL1_MODE_MASK);
reg |= AK5702_PLL1_SLAVE;
reg |= AK5702_PLL1_POWERUP;
break;
default:
return -ENODEV;
}
switch (freq_in) {
case 11289600:
reg &= (~AK5702_PLL1_PLL_MASK);
reg |= AK5702_PLL1_11289600;
break;
case 12000000:
reg &= (~AK5702_PLL1_PLL_MASK);
reg |= AK5702_PLL1_12000000;
break;
case 12288000:
reg &= (~AK5702_PLL1_PLL_MASK);
reg |= AK5702_PLL1_12288000;
break;
case 19200000:
reg &= (~AK5702_PLL1_PLL_MASK);
reg |= AK5702_PLL1_19200000;
break;
default:
return -ENODEV;
}
ak5702_write(codec, AK5702_PLL1, reg);
return 0;
}
static int ak5702_resume(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = socdev->card->codec;
int i;
/* Bring the codec back up to standby first to minimise pop/clicks */
ak5702_set_bias_level(codec, SND_SOC_BIAS_STANDBY);
ak5702_set_bias_level(codec, codec->suspend_bias_level);
/* Sync back everything else */
for (i = 0; i < ARRAY_SIZE(ak5702_reg); i++)
ak5702_write(codec, i, ak5702_reg[i]);
return 0;
}
static int ak5702_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;
u8 fs = 0;
u8 value;
switch (freq) {
case 8000:
fs = 0x0;
break;
case 11025:
fs = 0x05;
break;
case 12000:
fs = 0x01;
break;
case 16000:
fs = 0x02;
break;
case 22050:
fs = 0x07;
break;
case 24000:
fs = 0x03;
break;
case 32000:
fs = 0x0a;
break;
case 44100:
fs = 0x0f;
break;
case 48000:
fs = 0x0b;
break;
default:
return -EINVAL;
}
value = ak5702_read_reg_cache(codec, AK5702_FS1);
value &= (~AK5702_FS1_FS_MASK);
value |= fs;
ak5702_write(codec, AK5702_FS1, value);
return 0;
}
static int ak5702_probe(struct platform_device *pdev)
{
struct snd_soc_device *socdev = platform_get_drvdata(pdev);
struct snd_soc_codec *codec = ak5702_codec;
int ret = 0;
u8 reg = 0;
socdev->card->codec = ak5702_codec;
/* register pcms */
ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1);
if (ret < 0) {
printk(KERN_ERR "ak5702: failed to create pcms\n");
goto pcm_err;
}
/* power on device */
reg = ak5702_read_reg_cache(codec, AK5702_PM1);
reg |= AK5702_PM1_PMVCM;
ak5702_write(codec, AK5702_PM1, reg);
/* initialize ADC */
reg = AK5702_SIG1_L_LIN1 | AK5702_SIG1_R_RIN2;
ak5702_write(codec, AK5702_SIG1, reg);
reg = AK5702_SIG2_L_LIN3 | AK5702_SIG2_R_RIN4;
ak5702_write(codec, AK5702_SIG2, reg);
reg = ak5702_read_reg_cache(codec, AK5702_PM1);
reg = reg | AK5702_PM1_PMADAL | AK5702_PM1_PMADAR;
ak5702_write(codec, AK5702_PM1, reg);
reg = ak5702_read_reg_cache(codec, AK5702_PM2);
reg = reg | AK5702_PM2_PMADBL | AK5702_PM2_PMADBR;
ak5702_write(codec, AK5702_PM2, reg);
/* initialize volume */
ak5702_write(codec, AK5702_MICG1, AK5702_MICG1_INIT);
ak5702_write(codec, AK5702_MICG2, AK5702_MICG2_INIT);
ak5702_write(codec, AK5702_VOL1, AK5702_VOL1_IVOLAC);
ak5702_write(codec, AK5702_VOL2, AK5702_VOL2_IVOLBC);
ak5702_write(codec, AK5702_LVOL1, AK5702_LVOL1_INIT);
ak5702_write(codec, AK5702_RVOL1, AK5702_RVOL1_INIT);
ak5702_write(codec, AK5702_LVOL2, AK5702_LVOL2_INIT);
ak5702_write(codec, AK5702_RVOL2, AK5702_RVOL2_INIT);
snd_soc_add_controls(codec, ak5702_snd_controls,
ARRAY_SIZE(ak5702_snd_controls));
ak5702_add_widgets(codec);
ret = snd_soc_init_card(socdev);
if (ret < 0) {
printk(KERN_ERR "ak5702: failed to register card\n");
goto card_err;
}
return ret;
card_err:
snd_soc_free_pcms(socdev);
snd_soc_dapm_free(socdev);
pcm_err:
kfree(codec->reg_cache);
return ret;
}