Commit c481fca3 authored Jan 07, 2008 by Matthew Ranostay Committed by Jaroslav Kysela Jan 31, 2008

[ALSA] hda: STAC927x VREF fix



Some laptops incorrectly assume the front input jack as a line in
instead of a microphone in. Which in turn disables the voltage
reference, in which non-amplified input is not possible.  This patch
enables VREF80 for the input jack.

Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

parent 740eb835

sound/pci/hda/patch_sigmatel.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -3344,6 +3344,9 @@ static int patch_stac927x(struct hda_codec *codec)
		spec->mixer = stac927x_mixer;
		break;
		case STAC_DELL_BIOS:
		/* correct the front input jack as a mic */
		stac92xx_set_config_reg(codec, 0x0e, 0x02a79130);
		/* fallthru */
		case STAC_DELL_3ST:
		/* GPIO2 High = Enable EAPD */
		spec->gpio_mask = spec->gpio_data = 0x00000004;