[alsa-devel] [PATCH] hda: STAC927x analog mic

[Matthew Ranostay]

Some laptops have a internal analog microphone that is not setup by the BIOS.

Signed-off-by: Matthew Ranostay <mranostay at embeddedalley.com>
---
diff -r 6b53fa114faa pci/hda/patch_sigmatel.c
--- a/pci/hda/patch_sigmatel.c	Tue Feb 19 15:03:57 2008 +0100
+++ b/pci/hda/patch_sigmatel.c	Wed Feb 20 17:11:51 2008 -0500
@@ -3629,6 +3629,8 @@ static int patch_stac927x(struct hda_cod
 		spec->mixer = stac927x_mixer;
 		break;
 	case STAC_DELL_BIOS:
+		/* configure the analog microphone on some laptops */
+		stac92xx_set_config_reg(codec, 0x0c, 0x90a79130);
 		/* correct the front output jack as a hp out */
 		stac92xx_set_config_reg(codec, 0x0f, 0x02270110);
 		/* correct the front input jack as a mic */