diff options
| author | Shunli Wang <shunli.wang@mediatek.com> | 2019-05-20 11:24:20 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-05-20 17:21:09 +0300 |
| commit | 326b18176353d26df54dbc8b4b75ed4332898f61 (patch) | |
| tree | 16078fed1eaf7986bfe3a90ca1f9da3df5540041 /sound/soc/mediatek | |
| parent | b0a821daf0d04e5a8ae99829e24f2fe538f25763 (diff) | |
| download | linux-326b18176353d26df54dbc8b4b75ed4332898f61.tar.xz | |
ASoC: Mediatek: MT8183: enable IIR filter
IIR fileter can remove DC offset. It must be enabled when
dmic or amic connected to pmic is used.
Signed-off-by: Shunli Wang <shunli.wang@mediatek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/mediatek')
| -rw-r--r-- | sound/soc/mediatek/mt8183/mt8183-dai-adda.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/sound/soc/mediatek/mt8183/mt8183-dai-adda.c b/sound/soc/mediatek/mt8183/mt8183-dai-adda.c index 017d7d1d9148..2b758a18c2ea 100644 --- a/sound/soc/mediatek/mt8183/mt8183-dai-adda.c +++ b/sound/soc/mediatek/mt8183/mt8183-dai-adda.c @@ -176,9 +176,6 @@ static int mtk_adda_ul_event(struct snd_soc_dapm_widget *w, case SND_SOC_DAPM_POST_PMD: /* should delayed 1/fs(smallest is 8k) = 125us before afe off */ usleep_range(125, 135); - - /* reset dmic */ - afe_priv->mtkaif_dmic = 0; break; default: break; @@ -426,6 +423,17 @@ static int mtk_dai_adda_hw_params(struct snd_pcm_substream *substream, ul_src_con0 |= (voice_mode << 17) & (0x7 << 17); + /* enable iir */ + ul_src_con0 |= (1 << UL_IIR_ON_TMP_CTL_SFT) & + UL_IIR_ON_TMP_CTL_MASK_SFT; + + /* 35Hz @ 48k */ + regmap_write(afe->regmap, AFE_ADDA_IIR_COEF_02_01, 0x00000000); + regmap_write(afe->regmap, AFE_ADDA_IIR_COEF_04_03, 0x00003FB8); + regmap_write(afe->regmap, AFE_ADDA_IIR_COEF_06_05, 0x3FB80000); + regmap_write(afe->regmap, AFE_ADDA_IIR_COEF_08_07, 0x3FB80000); + regmap_write(afe->regmap, AFE_ADDA_IIR_COEF_10_09, 0x0000C048); + regmap_write(afe->regmap, AFE_ADDA_UL_SRC_CON0, ul_src_con0); /* mtkaif_rxif_data_mode = 0, amic */ |