The patch supports DMIC clock slew rate controls.
Signed-off-by: Seven Lee wtli@nuvoton.com --- sound/soc/codecs/nau8821.c | 7 +++++++ sound/soc/codecs/nau8821.h | 3 +++ 2 files changed, 10 insertions(+)
diff --git a/sound/soc/codecs/nau8821.c b/sound/soc/codecs/nau8821.c index 6e1b6b26298a..012e347e6391 100644 --- a/sound/soc/codecs/nau8821.c +++ b/sound/soc/codecs/nau8821.c @@ -1738,6 +1738,10 @@ static int nau8821_read_device_properties(struct device *dev, &nau8821->dmic_clk_threshold); if (ret) nau8821->dmic_clk_threshold = 3072000; + ret = device_property_read_u32(dev, "nuvoton,dmic-slew-rate", + &nau8821->dmic_slew_rate); + if (ret) + nau8821->dmic_slew_rate = 0;
return 0; } @@ -1797,6 +1801,9 @@ static void nau8821_init_regs(struct nau8821 *nau8821) NAU8821_ADC_SYNC_DOWN_MASK, NAU8821_ADC_SYNC_DOWN_64); regmap_update_bits(regmap, NAU8821_R2C_DAC_CTRL1, NAU8821_DAC_OVERSAMPLE_MASK, NAU8821_DAC_OVERSAMPLE_64); + regmap_update_bits(regmap, NAU8821_R13_DMIC_CTRL, + NAU8821_DMIC_SLEW_MASK, nau8821->dmic_slew_rate << + NAU8821_DMIC_SLEW_SFT); if (nau8821->left_input_single_end) { regmap_update_bits(regmap, NAU8821_R6B_PGA_MUTE, NAU8821_MUTE_MICNL_EN, NAU8821_MUTE_MICNL_EN); diff --git a/sound/soc/codecs/nau8821.h b/sound/soc/codecs/nau8821.h index 00a888ed07ce..62eaad130b2e 100644 --- a/sound/soc/codecs/nau8821.h +++ b/sound/soc/codecs/nau8821.h @@ -236,6 +236,8 @@ #define NAU8821_DMIC_SRC_MASK (0x3 << NAU8821_DMIC_SRC_SFT) #define NAU8821_CLK_DMIC_SRC (0x2 << NAU8821_DMIC_SRC_SFT) #define NAU8821_DMIC_EN_SFT 0 +#define NAU8821_DMIC_SLEW_SFT 8 +#define NAU8821_DMIC_SLEW_MASK (0x7 << NAU8821_DMIC_SLEW_SFT)
/* GPIO12_CTRL (0x1a) */ #define NAU8821_JKDET_PULL_UP (0x1 << 11) /* 0 - pull down, 1 - pull up */ @@ -573,6 +575,7 @@ struct nau8821 { int jack_eject_debounce; int fs; int dmic_clk_threshold; + int dmic_slew_rate; int key_enable; };