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| 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 | |
| parent | b14224bb74e19072c34617c501bceab94ebf579f (diff) | |
| download | linux-stable-0287d970652027d5e299e0215578f228660a0e4e.tar.gz linux-stable-0287d970652027d5e299e0215578f228660a0e4e.tar.bz2 linux-stable-0287d970652027d5e299e0215578f228660a0e4e.zip | |
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>
| -rw-r--r-- | sound/pci/hda/hda_codec.h | 1 | ||||
| -rw-r--r-- | sound/pci/hda/hda_intel.c | 3 | ||||
| -rw-r--r-- | sound/pci/hda/patch_intelhdmi.c | 11 |
3 files changed, 14 insertions, 1 deletions
diff --git a/sound/pci/hda/hda_codec.h b/sound/pci/hda/hda_codec.h index 9000d52fccca..1d541b7f5547 100644 --- a/sound/pci/hda/hda_codec.h +++ b/sound/pci/hda/hda_codec.h @@ -639,6 +639,7 @@ struct hda_bus { unsigned int rirb_error:1; /* error in codec communication */ unsigned int response_reset:1; /* controller was reset */ unsigned int in_reset:1; /* during reset operation */ + unsigned int power_keep_link_on:1; /* don't power off HDA link */ }; /* diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index efcc4f7c57f2..e54420e691ae 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -2082,7 +2082,8 @@ static void azx_power_notify(struct hda_bus *bus) } if (power_on) azx_init_chip(chip); - else if (chip->running && power_save_controller) + else if (chip->running && power_save_controller && + !bus->power_keep_link_on) azx_stop_chip(chip); } #endif /* CONFIG_SND_HDA_POWER_SAVE */ diff --git a/sound/pci/hda/patch_intelhdmi.c b/sound/pci/hda/patch_intelhdmi.c index 3990182777ee..918f40378d52 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; } |