From 1ad747ca9b6f97f895e0a6ccd447b158aeaa568d Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Tue, 23 Mar 2010 16:27:38 +0900 Subject: [PATCH] ASoC: ak4642: Add enhanced sampling rate Signed-off-by: Kuninori Morimoto Acked-by: Liam Girdwood Signed-off-by: Mark Brown --- sound/soc/codecs/ak4642.c | 68 ++++++++++++++++++++++++++++++++++++--- 1 file changed, 63 insertions(+), 5 deletions(-) diff --git a/sound/soc/codecs/ak4642.c b/sound/soc/codecs/ak4642.c index 3452bd752739..de1809dc8d91 100644 --- a/sound/soc/codecs/ak4642.c +++ b/sound/soc/codecs/ak4642.c @@ -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); -- 2.20.1