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ASoC: ak4642: Add enhanced sampling rate 

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Kuninori Morimoto 2010-03-23 16:27:38 +09:00 committed by Mark Brown
parent 0643ce8f42
commit 1ad747ca9b
1 changed files with 63 additions and 5 deletions
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68
sound/soc/codecs/ak4642.c
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@ -101,6 +101,13 @@
#define BCKO_MASK (1 << 3)
#define BCKO_64 BCKO_MASK
/* MD_CTL2 */
#define FS0 (1 << 0)
#define FS1 (1 << 1)
#define FS2 (1 << 2)
#define FS3 (1 << 5)
#define FS_MASK (FS0 | FS1 | FS2 | FS3)
struct snd_soc_codec_device soc_codec_dev_ak4642;
/* codec private data */
@ -196,14 +203,12 @@ static int ak4642_dai_startup(struct snd_pcm_substream *substream,
*
* PLL, Master Mode
* Audio I/F Format :MSB justified (ADC & DAC)
* Sampling Frequency: 44.1kHz
* Digital Volume: −8dB
* Digital Volume: -8dB
* Bass Boost Level : Middle
*
* This operation came from example code of
* "ASAHI KASEI AK4642" (japanese) manual p97.
*/
ak4642_write(codec, 0x05, 0x27);
ak4642_write(codec, 0x0f, 0x09);
ak4642_write(codec, 0x0e, 0x19);
ak4642_write(codec, 0x09, 0x91);
@ -219,7 +224,6 @@ static int ak4642_dai_startup(struct snd_pcm_substream *substream,
*
* PLL Master Mode
* Audio I/F Format:MSB justified (ADC & DAC)
* Sampling Frequency:44.1kHz
* Pre MIC AMP:+20dB
* MIC Power On
* ALC setting:Refer to Table 35
@ -228,7 +232,6 @@ static int ak4642_dai_startup(struct snd_pcm_substream *substream,
* This operation came from example code of
* "ASAHI KASEI AK4642" (japanese) manual p94.
*/
ak4642_write(codec, 0x05, 0x27);
ak4642_write(codec, 0x02, 0x05);
ak4642_write(codec, 0x06, 0x3c);
ak4642_write(codec, 0x08, 0xe1);
@ -321,11 +324,65 @@ static int ak4642_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
return 0;
}
static int ak4642_dai_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct snd_soc_codec *codec = dai->codec;
u8 rate;
switch (params_rate(params)) {
case 7350:
rate = FS2;
break;
case 8000:
rate = 0;
break;
case 11025:
rate = FS2 | FS0;
break;
case 12000:
rate = FS0;
break;
case 14700:
rate = FS2 | FS1;
break;
case 16000:
rate = FS1;
break;
case 22050:
rate = FS2 | FS1 | FS0;
break;
case 24000:
rate = FS1 | FS0;
break;
case 29400:
rate = FS3 | FS2 | FS1;
break;
case 32000:
rate = FS3 | FS1;
break;
case 44100:
rate = FS3 | FS2 | FS1 | FS0;
break;
case 48000:
rate = FS3 | FS1 | FS0;
break;
default:
return -EINVAL;
break;
}
snd_soc_update_bits(codec, MD_CTL2, FS_MASK, rate);
return 0;
}
static struct snd_soc_dai_ops ak4642_dai_ops = {
.startup = ak4642_dai_startup,
.shutdown = ak4642_dai_shutdown,
.set_sysclk = ak4642_dai_set_sysclk,
.set_fmt = ak4642_dai_set_fmt,
.hw_params = ak4642_dai_hw_params,
};
struct snd_soc_dai ak4642_dai = {
@ -343,6 +400,7 @@ struct snd_soc_dai ak4642_dai = {
.rates = SNDRV_PCM_RATE_8000_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE },
.ops = &ak4642_dai_ops,
.symmetric_rates = 1,
};
EXPORT_SYMBOL_GPL(ak4642_dai);