ASoC: TWL4030: hands-free start-up sequence.
A special start-up sequence is required to reduce the pop-noise of Class D amplifier when enable hands-free on TWL4030. Signed-off-by: Stanley.Miao <stanley.miao@windriver.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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@ -322,6 +322,30 @@ static int outmixer_event(struct snd_soc_dapm_widget *w,
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return ret;
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return ret;
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}
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}
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static int handsfree_event(struct snd_soc_dapm_widget *w,
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struct snd_kcontrol *kcontrol, int event)
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{
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struct soc_enum *e = (struct soc_enum *)w->kcontrols->private_value;
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unsigned char hs_ctl;
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hs_ctl = twl4030_read_reg_cache(w->codec, e->reg);
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if (hs_ctl & TWL4030_HF_CTL_REF_EN) {
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hs_ctl |= TWL4030_HF_CTL_RAMP_EN;
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twl4030_write(w->codec, e->reg, hs_ctl);
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hs_ctl |= TWL4030_HF_CTL_LOOP_EN;
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twl4030_write(w->codec, e->reg, hs_ctl);
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hs_ctl |= TWL4030_HF_CTL_HB_EN;
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twl4030_write(w->codec, e->reg, hs_ctl);
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} else {
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hs_ctl &= ~(TWL4030_HF_CTL_RAMP_EN | TWL4030_HF_CTL_LOOP_EN
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| TWL4030_HF_CTL_HB_EN);
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twl4030_write(w->codec, e->reg, hs_ctl);
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}
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return 0;
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}
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/*
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/*
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* Some of the gain controls in TWL (mostly those which are associated with
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* Some of the gain controls in TWL (mostly those which are associated with
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* the outputs) are implemented in an interesting way:
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* the outputs) are implemented in an interesting way:
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@ -806,10 +830,12 @@ static const struct snd_soc_dapm_widget twl4030_dapm_widgets[] = {
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SND_SOC_DAPM_MUX("CarkitR Mux", SND_SOC_NOPM, 0, 0,
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SND_SOC_DAPM_MUX("CarkitR Mux", SND_SOC_NOPM, 0, 0,
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&twl4030_dapm_carkitr_control),
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&twl4030_dapm_carkitr_control),
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/* HandsfreeL/R */
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/* HandsfreeL/R */
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SND_SOC_DAPM_MUX("HandsfreeL Mux", TWL4030_REG_HFL_CTL, 5, 0,
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SND_SOC_DAPM_MUX_E("HandsfreeL Mux", TWL4030_REG_HFL_CTL, 5, 0,
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&twl4030_dapm_handsfreel_control),
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&twl4030_dapm_handsfreel_control, handsfree_event,
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SND_SOC_DAPM_MUX("HandsfreeR Mux", TWL4030_REG_HFR_CTL, 5, 0,
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SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD),
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&twl4030_dapm_handsfreer_control),
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SND_SOC_DAPM_MUX_E("HandsfreeR Mux", TWL4030_REG_HFR_CTL, 5, 0,
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&twl4030_dapm_handsfreer_control, handsfree_event,
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SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD),
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SND_SOC_DAPM_ADC("ADCL", "Left Capture", SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_ADC("ADCL", "Left Capture", SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_ADC("ADCR", "Right Capture", SND_SOC_NOPM, 0, 0),
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SND_SOC_DAPM_ADC("ADCR", "Right Capture", SND_SOC_NOPM, 0, 0),
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@ -191,6 +191,12 @@
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#define TWL4030_RAMP_DELAY_2581MS 0x1C
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#define TWL4030_RAMP_DELAY_2581MS 0x1C
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#define TWL4030_RAMP_EN 0x02
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#define TWL4030_RAMP_EN 0x02
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/* HFL_CTL (0x29, 0x2A) Fields */
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#define TWL4030_HF_CTL_HB_EN 0x04
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#define TWL4030_HF_CTL_LOOP_EN 0x08
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#define TWL4030_HF_CTL_RAMP_EN 0x10
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#define TWL4030_HF_CTL_REF_EN 0x20
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/* APLL_CTL (0x3A) Fields */
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/* APLL_CTL (0x3A) Fields */
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#define TWL4030_APLL_EN 0x10
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#define TWL4030_APLL_EN 0x10
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