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ASoC: TWL4030: Enable Headset Left anti-pop/bias ramp only if the Headset Left is in use 

The Headset Left anti-pop and bias ramp does not need to be
enabled, if the headset is not in use.
Move the code to DAPM event handler for HeadsetL.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Peter Ujfalusi 2009-01-27 11:29:41 +02:00 committed by Mark Brown
parent db04e2c58a
commit aad749e51a
1 changed files with 45 additions and 26 deletions
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71
sound/soc/codecs/twl4030.c
View File

@ -414,6 +414,47 @@ static int handsfree_event(struct snd_soc_dapm_widget *w,
return 0;
}
static int headsetl_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
unsigned char hs_gain, hs_pop;
/* Save the current volume */
hs_gain = twl4030_read_reg_cache(w->codec, TWL4030_REG_HS_GAIN_SET);
switch (event) {
case SND_SOC_DAPM_POST_PMU:
/* Do the anti-pop/bias ramp enable according to the TRM */
hs_pop = TWL4030_RAMP_DELAY_645MS;
twl4030_write(w->codec, TWL4030_REG_HS_POPN_SET, hs_pop);
hs_pop |= TWL4030_VMID_EN;
twl4030_write(w->codec, TWL4030_REG_HS_POPN_SET, hs_pop);
/* Is this needed? Can we just use whatever gain here? */
twl4030_write(w->codec, TWL4030_REG_HS_GAIN_SET,
(hs_gain & (~0x0f)) | 0x0a);
hs_pop |= TWL4030_RAMP_EN;
twl4030_write(w->codec, TWL4030_REG_HS_POPN_SET, hs_pop);
/* Restore the original volume */
twl4030_write(w->codec, TWL4030_REG_HS_GAIN_SET, hs_gain);
break;
case SND_SOC_DAPM_POST_PMD:
/* Do the anti-pop/bias ramp disable according to the TRM */
hs_pop = twl4030_read_reg_cache(w->codec,
TWL4030_REG_HS_POPN_SET);
hs_pop &= ~TWL4030_RAMP_EN;
twl4030_write(w->codec, TWL4030_REG_HS_POPN_SET, hs_pop);
/* Bypass the reg_cache to mute the headset */
twl4030_i2c_write_u8(TWL4030_MODULE_AUDIO_VOICE,
hs_gain & (~0x0f),
TWL4030_REG_HS_GAIN_SET);
hs_pop &= ~TWL4030_VMID_EN;
twl4030_write(w->codec, TWL4030_REG_HS_POPN_SET, hs_pop);
break;
}
return 0;
}
/*
* Some of the gain controls in TWL (mostly those which are associated with
* the outputs) are implemented in an interesting way:
@ -720,8 +761,9 @@ static const struct snd_soc_dapm_widget twl4030_dapm_widgets[] = {
SND_SOC_DAPM_VALUE_MUX("PredriveR Mux", SND_SOC_NOPM, 0, 0,
&twl4030_dapm_predriver_control),
/* HeadsetL/R */
SND_SOC_DAPM_MUX("HeadsetL Mux", SND_SOC_NOPM, 0, 0,
&twl4030_dapm_hsol_control),
SND_SOC_DAPM_MUX_E("HeadsetL Mux", SND_SOC_NOPM, 0, 0,
&twl4030_dapm_hsol_control, headsetl_event,
SND_SOC_DAPM_POST_PMU|SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_MUX("HeadsetR Mux", SND_SOC_NOPM, 0, 0,
&twl4030_dapm_hsor_control),
/* CarkitL/R */
@ -882,7 +924,7 @@ static int twl4030_add_widgets(struct snd_soc_codec *codec)
static void twl4030_power_up(struct snd_soc_codec *codec)
{
u8 anamicl, regmisc1, byte, popn;
u8 anamicl, regmisc1, byte;
int i = 0;
/* set CODECPDZ to turn on codec */
@ -915,33 +957,10 @@ static void twl4030_power_up(struct snd_soc_codec *codec)
/* toggle CODECPDZ as per TRM */
twl4030_codec_enable(codec, 0);
twl4030_codec_enable(codec, 1);
/* program anti-pop with bias ramp delay */
popn = twl4030_read_reg_cache(codec, TWL4030_REG_HS_POPN_SET);
popn &= TWL4030_RAMP_DELAY;
popn |= TWL4030_RAMP_DELAY_645MS;
twl4030_write(codec, TWL4030_REG_HS_POPN_SET, popn);
popn |= TWL4030_VMID_EN;
twl4030_write(codec, TWL4030_REG_HS_POPN_SET, popn);
/* enable anti-pop ramp */
popn |= TWL4030_RAMP_EN;
twl4030_write(codec, TWL4030_REG_HS_POPN_SET, popn);
}
static void twl4030_power_down(struct snd_soc_codec *codec)
{
u8 popn;
/* disable anti-pop ramp */
popn = twl4030_read_reg_cache(codec, TWL4030_REG_HS_POPN_SET);
popn &= ~TWL4030_RAMP_EN;
twl4030_write(codec, TWL4030_REG_HS_POPN_SET, popn);
/* disable bias out */
popn &= ~TWL4030_VMID_EN;
twl4030_write(codec, TWL4030_REG_HS_POPN_SET, popn);
/* power down */
twl4030_codec_enable(codec, 0);
}