diff options
| author | David Henningsson <david.henningsson@canonical.com> | 2012-09-18 14:26:59 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-13 05:47:14 +0900 |
| commit | 8e503dfba1352f262a516bc537354986b809eb01 (patch) | |
| tree | 56cf6eb5118c03dcfbe4a62cf16e3cc3bdc85d8f | |
| parent | 5245ac8619ff483daa2456315db76613065304cd (diff) | |
ALSA: hda - limit internal mic boost for Asus X202E
commit 4b527b6516ab1f0af8aaedd02dbf71ee2c1180f4 upstream.
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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | sound/pci/hda/patch_via.c | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_via.c b/sound/pci/hda/patch_via.c index f21fd911b542..9c35043a5683 100644 --- a/sound/pci/hda/patch_via.c +++ b/sound/pci/hda/patch_via.c @@ -3661,6 +3661,32 @@ 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) { @@ -3677,6 +3703,9 @@ 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) { |