From 9476d369d7b39348945c297da5f2935904229813 Mon Sep 17 00:00:00 2001 From: Gabriele Mazzotta Date: Sun, 19 Apr 2015 19:00:40 +0200 Subject: [PATCH] ALSA: hda - Mute headphone pin on suspend on XPS13 9333 Muting the headphone output pin right before the codec suspension prevents pop noises when headphones are plugged in (except for a barely audible click noise). This solution allows to truly save some power when headphones are plugged in unlike the previous solution (033b0a7ca9c: "ALSA: hda - Pop noises fix for XPS13 9333") Signed-off-by: Gabriele Mazzotta Signed-off-by: Takashi Iwai --- sound/pci/hda/patch_realtek.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/sound/pci/hda/patch_realtek.c b/sound/pci/hda/patch_realtek.c index b18b9c67b262..231d0e4b9a95 100644 --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -4176,17 +4176,15 @@ static void alc_fixup_disable_aamix(struct hda_codec *codec, } } -static unsigned int alc_power_filter_xps13(struct hda_codec *codec, - hda_nid_t nid, - unsigned int power_state) +static void alc_shutup_dell_xps13(struct hda_codec *codec) { struct alc_spec *spec = codec->spec; + int hp_pin = spec->gen.autocfg.hp_pins[0]; - /* Avoid pop noises when headphones are plugged in */ - if (spec->gen.hp_jack_present) - if (nid == codec->core.afg || nid == 0x02 || nid == 0x15) - return AC_PWRST_D0; - return snd_hda_gen_path_power_filter(codec, nid, power_state); + /* Prevent pop noises when headphones are plugged in */ + snd_hda_codec_write(codec, hp_pin, 0, + AC_VERB_SET_AMP_GAIN_MUTE, AMP_OUT_MUTE); + msleep(20); } static void alc_fixup_dell_xps13(struct hda_codec *codec, @@ -4197,8 +4195,7 @@ static void alc_fixup_dell_xps13(struct hda_codec *codec, struct hda_input_mux *imux = &spec->gen.input_mux; int i; - spec->shutup = alc_no_shutup; - codec->power_filter = alc_power_filter_xps13; + spec->shutup = alc_shutup_dell_xps13; /* Make the internal mic the default input source. */ for (i = 0; i < imux->num_items; i++) {