ASoC: TWL4030: Add DAPM event handler for output MUX selection (e8ff9c41) · Commits · 戴 / test

DAPM event handler is set to filter out invalid MUX settings for certain outputs. Earpiece: - 0 = Off - 1 = DACL1 - 2 = DACL2 - 3 = *** Invalid *** - 4 = DACR1 PreDriveL/R: - 0 = Off/Off - 1 = DACL1/DACR1 - 2 = DACL2/DACR2 - 3 = *** Invalid/Invalid *** - 4 = DACR2/DACL2 Signed-off-by:

Peter Ujfalusi <peter.ujfalusi@nokia.com> Signed-off-by:

Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/twl4030.c

+24 −0

Original line number	Diff line number	Diff line
		@@ -190,6 +190,30 @@ static void twl4030_init_chip(struct snd_soc_codec *codec)

		}

		static int outmixer_event(struct snd_soc_dapm_widget *w,
		struct snd_kcontrol *kcontrol, int event)
		{
		struct soc_enum e = (struct soc_enum )kcontrol->private_value;
		int ret = 0;
		int val;

		switch (e->reg) {
		case TWL4030_REG_PREDL_CTL:
		case TWL4030_REG_PREDR_CTL:
		case TWL4030_REG_EAR_CTL:
		val = w->value >> e->shift_l;
		if (val == 3) {
		printk(KERN_WARNING
		"Invalid MUX setting for register 0x%02x (%d)\n",
		e->reg, val);
		ret = -1;
		}
		break;
		}

		return ret;
		}

		/*
		* Some of the gain controls in TWL (mostly those which are associated with
		* the outputs) are implemented in an interesting way:

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