From: Mengdong Lin Date: Thu, 5 Dec 2013 23:35:48 +0000 (-0500) Subject: ALSA: hda - skip depop delay before D3 for Haswell and Valleyview2 display codec X-Git-Tag: firefly_0821_release~176^2~4492^2~11^2~56 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=5b8620bb84b2f66b7a776fbfc0d273f6c78d969c;p=firefly-linux-kernel-4.4.55.git ALSA: hda - skip depop delay before D3 for Haswell and Valleyview2 display codec This patch skips the default depop delay before D3 for Haswell (10 ms) and Valleyview2 (100 ms) display codec, to reduce codec suspend time. The analog part of display audio is implemented in the external display. Some displays have weak pop noise while others not when suspending, no matter there is the default delay or not. Signed-off-by: Mengdong Lin Signed-off-by: Takashi Iwai --- diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index 4098196b2300..1bd637b1dd0f 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -2247,6 +2247,10 @@ static int patch_generic_hdmi(struct hda_codec *codec) intel_haswell_fixup_enable_dp12(codec); } + if (is_haswell(codec) || is_valleyview(codec)) { + codec->depop_delay = 0; + } + if (hdmi_parse_codec(codec) < 0) { codec->spec = NULL; kfree(spec);