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authorDavid Henningsson <david.henningsson@canonical.com>2012-09-18 14:26:59 +0200
committerTakashi Iwai <tiwai@suse.de>2012-09-18 14:32:42 +0200
commit4b527b6516ab1f0af8aaedd02dbf71ee2c1180f4 (patch)
treec4225546efe5786bf819f113f08dc307e8e831ff /sound/pci/hda/patch_via.c
parentd279fae8a41690ec1b20c07be8c6f42f8af27a17 (diff)
ALSA: hda - limit internal mic boost for Asus X202E
When the input gain for the internal mic is set to its maximum level, the background noise becomes so high - and any relevant signal clipped - that the setting becomes unusable. It is better to limit the amplification. BugLink: https://bugs.launchpad.net/bugs/1052460 Signed-off-by: David Henningsson <david.henningsson@canonical.com> Cc: <stable@vger.kernel.org> [v3.5+] Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/patch_via.c')
-rw-r--r--sound/pci/hda/patch_via.c29
1 files changed, 29 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c
index d5f36a179eb..74fb6fd6768 100644
--- a/sound/pci/hda/patch_via.c
+++ b/sound/pci/hda/patch_via.c
@@ -3666,6 +3666,32 @@ static void set_widgets_power_state_vt2002P(struct hda_codec *codec)
update_power_state(codec, 0x21, AC_PWRST_D3);
}
+/*
+ * pin fix-up
+ */
+enum {
+ VIA_FIXUP_INTMIC_BOOST,
+};
+
+static void via_fixup_intmic_boost(struct hda_codec *codec,
+ const struct hda_fixup *fix, int action)
+{
+ if (action == HDA_FIXUP_ACT_PRE_PROBE)
+ override_mic_boost(codec, 0x30, 0, 2, 40);
+}
+
+static const struct hda_fixup via_fixups[] = {
+ [VIA_FIXUP_INTMIC_BOOST] = {
+ .type = HDA_FIXUP_FUNC,
+ .v.func = via_fixup_intmic_boost,
+ },
+};
+
+static const struct snd_pci_quirk vt2002p_fixups[] = {
+ SND_PCI_QUIRK(0x1043, 0x8532, "Asus X202E", VIA_FIXUP_INTMIC_BOOST),
+ {}
+};
+
/* patch for vt2002P */
static int patch_vt2002P(struct hda_codec *codec)
{
@@ -3682,6 +3708,9 @@ static int patch_vt2002P(struct hda_codec *codec)
override_mic_boost(codec, 0x29, 0, 3, 40);
add_secret_dac_path(codec);
+ snd_hda_pick_fixup(codec, NULL, vt2002p_fixups, via_fixups);
+ snd_hda_apply_fixup(codec, HDA_FIXUP_ACT_PRE_PROBE);
+
/* automatic parse from the BIOS config */
err = via_parse_auto_config(codec);
if (err < 0) {