forked from Minki/linux
ALSA: hda - Keep power link on for PantherPoint HDMI
On some of the PantherPoint HDMI machines we currently enable, we're seeing trouble with unsol events, i e detecting monitor presence, especially when on battery and after suspend/resume. BugLink: https://bugs.launchpad.net/bugs/1075882 Tested-by: Cyrus Lien <cyrus.lien@canonical.com> Signed-off-by: David Henningsson <david.henningsson@canonical.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -1288,13 +1288,17 @@ static int hdmi_parse_codec(struct hda_codec *codec)
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}
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}
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#ifdef CONFIG_PM
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/* We're seeing some problems with unsolicited hot plug events on
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* PantherPoint after S3, if this is not enabled */
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if (codec->vendor_id == 0x80862806)
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codec->bus->power_keep_link_on = 1;
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/*
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* G45/IbexPeak don't support EPSS: the unsolicited pin hot plug event
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* can be lost and presence sense verb will become inaccurate if the
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* HDA link is powered off at hot plug or hw initialization time.
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*/
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#ifdef CONFIG_PM
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if (!(snd_hda_param_read(codec, codec->afg, AC_PAR_POWER_STATE) &
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else if (!(snd_hda_param_read(codec, codec->afg, AC_PAR_POWER_STATE) &
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AC_PWRST_EPSS))
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codec->bus->power_keep_link_on = 1;
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#endif
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