diff options
| author | Wu Fengguang <fengguang.wu@intel.com> | 2009-12-11 20:15:11 +0800 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2009-12-11 14:06:18 +0100 |
| commit | 0287d970652027d5e299e0215578f228660a0e4e (patch) | |
| tree | 9147b88351f901747fb25e8f7a396e1afd4b0a2b /sound/pci/hda/patch_intelhdmi.c | |
| parent | b14224bb74e19072c34617c501bceab94ebf579f (diff) | |
intelhdmi - dont power off HDA link
For codecs without EPSS support (G45/IbexPeak), the hotplug event will
be lost if the HDA is powered off during the time. After that the pin
presence detection verb returns inaccurate info.
So always power-on HDA link for !EPSS codecs.
KarL offers the fact and Takashi recommends to flag hda_bus. Thanks!
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/patch_intelhdmi.c')
| -rw-r--r-- | sound/pci/hda/patch_intelhdmi.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sound/pci/hda/patch_intelhdmi.c b/sound/pci/hda/patch_intelhdmi.c index 3990182777e..918f40378d5 100644 --- a/sound/pci/hda/patch_intelhdmi.c +++ b/sound/pci/hda/patch_intelhdmi.c @@ -391,6 +391,17 @@ static int intel_hdmi_parse_codec(struct hda_codec *codec) } } + /* + * G45/IbexPeak don't support EPSS: the unsolicited pin hot plug event + * can be lost and presence sense verb will become inaccurate if the + * HDA link is powered off at hot plug or hw initialization time. + */ +#ifdef CONFIG_SND_HDA_POWER_SAVE + if (!(snd_hda_param_read(codec, codec->afg, AC_PAR_POWER_STATE) & + AC_PWRST_EPSS)) + codec->bus->power_keep_link_on = 1; +#endif + return 0; } |