diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-07-05 23:54:51 +0900 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-07-06 08:46:10 +0900 |
| commit | db059c0f6edec0b1deba665e5853f4ed829003b7 (patch) | |
| tree | b30bede340908df84d915051cbe59f4256bf1417 /sound/soc/codecs/wm8960.c | |
| parent | afd6d36a0ded1691c6710ebddabae06e5bb9583b (diff) | |
ASoC: Automatically manage ALC coefficients for WM8960
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'sound/soc/codecs/wm8960.c')
| -rw-r--r-- | sound/soc/codecs/wm8960.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c index 743d9a708a22..3c6ee61f6c95 100644 --- a/sound/soc/codecs/wm8960.c +++ b/sound/soc/codecs/wm8960.c @@ -487,6 +487,21 @@ static int wm8960_set_dai_fmt(struct snd_soc_dai *codec_dai, return 0; } +static struct { + int rate; + unsigned int val; +} alc_rates[] = { + { 48000, 0 }, + { 44100, 0 }, + { 32000, 1 }, + { 22050, 2 }, + { 24000, 2 }, + { 16000, 3 }, + { 11250, 4 }, + { 12000, 4 }, + { 8000, 5 }, +}; + static int wm8960_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) @@ -496,6 +511,7 @@ static int wm8960_hw_params(struct snd_pcm_substream *substream, struct snd_soc_codec *codec = socdev->card->codec; struct wm8960_priv *wm8960 = snd_soc_codec_get_drvdata(codec); u16 iface = snd_soc_read(codec, WM8960_IFACE1) & 0xfff3; + int i; /* bit size */ switch (params_format(params)) { @@ -513,6 +529,12 @@ static int wm8960_hw_params(struct snd_pcm_substream *substream, if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { wm8960->playback_fs = params_rate(params); wm8960_set_deemph(codec); + } else { + for (i = 0; i < ARRAY_SIZE(alc_rates); i++) + if (alc_rates[i].rate == params_rate(params)) + snd_soc_update_bits(codec, + WM8960_ADDCTL3, 0x7, + alc_rates[i].val); } /* set iface */ |