Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit ee8f6894 authored by Lopez Cruz, Misael's avatar Lopez Cruz, Misael Committed by Mark Brown
Browse files

ASoC: TWL4030: Add voice digital loopback: sidetone 



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: default avatarMisael Lopez Cruz <x0052729@ti.com>
Acked-by: default avatarPeter Ujfalusi <peter.ujfalusi@nokia.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent fcd274a3

sound/soc/codecs/twl4030.c

+25 −2
Original line number Diff line number Diff line
@@ -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"},



};