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authorPeter Ujfalusi <peter.ujfalusi@nokia.com>2009-01-27 10:29:41 +0100
committerMark Brown <broonie@opensource.wolfsonmicro.com>2009-01-27 11:42:40 +0100
commitaad749e51a66d473f5cef4a050e3e36795261be3 (patch)
tree1ec7550d036fa6e8d94e8229048f9c0d278ced3d /sound/soc/codecs/twl4030.c
parentASoC: TWL4030: Code clean up for codec power up and down (diff)
downloadlinux-aad749e51a66d473f5cef4a050e3e36795261be3.tar.xz
linux-aad749e51a66d473f5cef4a050e3e36795261be3.zip
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>
Diffstat (limited to 'sound/soc/codecs/twl4030.c')
-rw-r--r--sound/soc/codecs/twl4030.c71
1 files changed, 45 insertions, 26 deletions
diff --git a/sound/soc/codecs/twl4030.c b/sound/soc/codecs/twl4030.c
index af7b433d4f53..900486ef633d 100644
--- a/sound/soc/codecs/twl4030.c
+++ b/sound/soc/codecs/twl4030.c
@@ -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);
}