From 9499473463628a1af4be5aea1ad8d35d3fd341b0 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Mon, 11 Jul 2011 11:36:44 +0200
Subject: [PATCH] ALSA: hda - Preserve input pin-ctl bits in HP-automute for
VIA codec
For smart51 pins, we need to preserve the input pin-control bits at
auto-mute controls instead of overwriting zero or pin-out-only.
Otherwise the VREF won't be set properly when smart51 is disabled
again.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
sound/pci/hda/patch_via.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c
index 27de53fb331e..77df2bedfb81 100644
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -1509,10 +1509,18 @@ static void toggle_output_mutes(struct hda_codec *codec, int num_pins,
hda_nid_t *pins, bool mute)
{
int i;
- for (i = 0; i < num_pins; i++)
+ for (i = 0; i < num_pins; i++) {
+ unsigned int parm = snd_hda_codec_read(codec, pins[i], 0,
+ AC_VERB_GET_PIN_WIDGET_CONTROL, 0);
+ if (parm & AC_PINCTL_IN_EN)
+ continue;
+ if (mute)
+ parm &= ~AC_PINCTL_OUT_EN;
+ else
+ parm |= AC_PINCTL_OUT_EN;
snd_hda_codec_write(codec, pins[i], 0,
- AC_VERB_SET_PIN_WIDGET_CONTROL,
- mute ? 0 : PIN_OUT);
+ AC_VERB_SET_PIN_WIDGET_CONTROL, parm);
+ }
}
/* mute internal speaker if line-out is plugged */
--
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