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ASoC: TWL4030: Add voice digital loopback: sidetone

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This patch add voice digital loopback (sidetone) to the twl4030
driver. It mixes voice uplink attenuated (by sidetone gain) with
voice downlink when the codec is working in option2 (voice/audio
mode).

Signed-off-by: Misael Lopez Cruz <x0052729@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Lopez Cruz, Misael 2009-04-30 21:48:08 -05:00 committed by Mark Brown
parent fcd274a345
commit ee8f6894f3
1 changed files with 25 additions and 2 deletions
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27
sound/soc/codecs/twl4030.c
View File

@ -491,6 +491,18 @@ static const struct snd_kcontrol_new twl4030_dapm_dbypassr_control =
TWL4030_REG_ATX2ARXPGA, 0, 7, 0,
twl4030_dapm_dbypass_tlv);
/*
* Voice Sidetone GAIN volume control:
* from -51 to -10 dB in 1 dB steps (mute instead of -51 dB)
*/
static DECLARE_TLV_DB_SCALE(twl4030_dapm_dbypassv_tlv, -5100, 100, 1);
/* Digital bypass voice: sidetone (VUL -> VDL)*/
static const struct snd_kcontrol_new twl4030_dapm_dbypassv_control =
SOC_DAPM_SINGLE_TLV("Volume",
TWL4030_REG_VSTPGA, 0, 0x29, 0,
twl4030_dapm_dbypassv_tlv);
static int micpath_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
@ -607,12 +619,18 @@ static int bypass_event(struct snd_soc_dapm_widget *w,
twl4030->bypass_state |= (1 << 4);
else
twl4030->bypass_state &= ~(1 << 4);
} else if (m->reg == TWL4030_REG_VSTPGA) {
/* Voice digital bypass */
if (reg)
twl4030->bypass_state |= (1 << 5);
else
twl4030->bypass_state &= ~(1 << 5);
} else {
/* Digital bypass */
if (reg & (0x7 << m->shift))
twl4030->bypass_state |= (1 << (m->shift ? 6 : 5));
twl4030->bypass_state |= (1 << (m->shift ? 7 : 6));
else
twl4030->bypass_state &= ~(1 << (m->shift ? 6 : 5));
twl4030->bypass_state &= ~(1 << (m->shift ? 7 : 6));
}
/* Enable master analog loopback mode if any analog switch is enabled*/
@ -991,6 +1009,9 @@ static const struct snd_soc_dapm_widget twl4030_dapm_widgets[] = {
SND_SOC_DAPM_SWITCH_E("Right Digital Loopback", SND_SOC_NOPM, 0, 0,
&twl4030_dapm_dbypassr_control, bypass_event,
SND_SOC_DAPM_POST_REG),
SND_SOC_DAPM_SWITCH_E("Voice Digital Loopback", SND_SOC_NOPM, 0, 0,
&twl4030_dapm_dbypassv_control, bypass_event,
SND_SOC_DAPM_POST_REG),
SND_SOC_DAPM_MIXER("Analog R1 Playback Mixer", TWL4030_REG_AVDAC_CTL,
0, 0, NULL, 0),
@ -1203,9 +1224,11 @@ static const struct snd_soc_dapm_route intercon[] = {
/* Digital bypass routes */
{"Right Digital Loopback", "Volume", "TX1 Capture Route"},
{"Left Digital Loopback", "Volume", "TX1 Capture Route"},
{"Voice Digital Loopback", "Volume", "TX2 Capture Route"},
{"Analog R2 Playback Mixer", NULL, "Right Digital Loopback"},
{"Analog L2 Playback Mixer", NULL, "Left Digital Loopback"},
{"Analog Voice Playback Mixer", NULL, "Voice Digital Loopback"},
};