Fix unnecessary widget power up when standby; And decrease internal clock frequency to save power.
Signed-off-by: John Hsu KCHSU0@nuvoton.com --- sound/soc/codecs/nau8825.c | 49 +++++++++++++++++++++++++++++++++------------- 1 file changed, 35 insertions(+), 14 deletions(-)
diff --git a/sound/soc/codecs/nau8825.c b/sound/soc/codecs/nau8825.c index 52882e4..f9752cc 100644 --- a/sound/soc/codecs/nau8825.c +++ b/sound/soc/codecs/nau8825.c @@ -262,6 +262,29 @@ static int nau8825_playback_event(struct snd_soc_dapm_widget *w, return 0; }
+static int nau8825_dacr_event(struct snd_soc_dapm_widget *w, + struct snd_kcontrol *kcontrol, int event) +{ + struct snd_soc_codec *codec = snd_soc_dapm_to_codec(w->dapm); + struct nau8825 *nau8825 = snd_soc_codec_get_drvdata(codec); + + switch (event) { + case SND_SOC_DAPM_POST_PMU: + regmap_update_bits(nau8825->regmap, NAU8825_REG_ENA_CTRL, + NAU8825_ENABLE_DACR, NAU8825_ENABLE_DACR); + break; + case SND_SOC_DAPM_POST_PMD: + if (!nau8825->irq) + regmap_update_bits(nau8825->regmap, + NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_DACR, 0); + break; + default: + return -EINVAL; + } + + return 0; +} +
static const char * const nau8825_adc_decimation[] = { "32", "64", "128", "256" @@ -337,16 +360,17 @@ static const struct snd_soc_dapm_widget nau8825_dapm_widgets[] = { 0),
/* ADC for button press detection */ - SND_SOC_DAPM_ADC("SAR", NULL, NAU8825_REG_SAR_CTRL, - NAU8825_SAR_ADC_EN_SFT, 0), + SND_SOC_DAPM_SUPPLY("SAR", NAU8825_REG_SAR_CTRL, + NAU8825_SAR_ADC_EN_SFT, 0, NULL, 0),
SND_SOC_DAPM_DAC("ADACL", NULL, NAU8825_REG_RDAC, 12, 0), SND_SOC_DAPM_DAC("ADACR", NULL, NAU8825_REG_RDAC, 13, 0), SND_SOC_DAPM_SUPPLY("ADACL Clock", NAU8825_REG_RDAC, 8, 0, NULL, 0), SND_SOC_DAPM_SUPPLY("ADACR Clock", NAU8825_REG_RDAC, 9, 0, NULL, 0),
- SND_SOC_DAPM_DAC("DDACR", NULL, NAU8825_REG_ENA_CTRL, - NAU8825_ENABLE_DACR_SFT, 0), + SND_SOC_DAPM_DAC_E("DDACR", NULL, SND_SOC_NOPM, 0, 0, + nau8825_dacr_event, SND_SOC_DAPM_POST_PMU | + SND_SOC_DAPM_POST_PMD), SND_SOC_DAPM_DAC("DDACL", NULL, NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_DACL_SFT, 0), SND_SOC_DAPM_SUPPLY("DDAC Clock", NAU8825_REG_ENA_CTRL, 6, 0, NULL, 0), @@ -878,13 +902,6 @@ static int nau8825_codec_probe(struct snd_soc_codec *codec)
nau8825->dapm = dapm;
- /* The interrupt clock is gated by x1[10:8], - * one of them needs to be enabled all the time for - * interrupts to happen. - */ - snd_soc_dapm_force_enable_pin(dapm, "DDACR"); - snd_soc_dapm_sync(dapm); - /* Unmask interruptions. Handler uses dapm object so we can enable * interruptions only after dapm is fully initialized. */ @@ -1075,6 +1092,12 @@ static int nau8825_configure_sysclk(struct nau8825 *nau8825, int clk_id, NAU8825_DCO_EN); regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER, NAU8825_CLK_SRC_MASK, NAU8825_CLK_SRC_VCO); + regmap_update_bits(regmap, NAU8825_REG_CLK_DIVIDER, + NAU8825_CLK_MCLK_SRC_MASK, 0xf); + regmap_update_bits(regmap, NAU8825_REG_FLL1, + NAU8825_FLL_RATIO_MASK, 0x10); + regmap_update_bits(regmap, NAU8825_REG_FLL6, + NAU8825_SDM_EN, NAU8825_SDM_EN); if (nau8825->mclk_freq) { clk_disable_unprepare(nau8825->mclk); nau8825->mclk_freq = 0; @@ -1309,9 +1332,7 @@ static int nau8825_setup_irq(struct nau8825 *nau8825) /* Enable internal VCO needed for interruptions */ nau8825_configure_sysclk(nau8825, NAU8825_CLK_INTERNAL, 0);
- /* Enable DDACR needed for interrupts - * It is the same as force_enable_pin("DDACR") we do later - */ + /* Enable DDACR needed for interrupts */ regmap_update_bits(regmap, NAU8825_REG_ENA_CTRL, NAU8825_ENABLE_DACR, NAU8825_ENABLE_DACR);