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>
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c
index 39ca100..3824699 100644
--- a/sound/pci/hda/patch_hdmi.c
+++ b/sound/pci/hda/patch_hdmi.c
@@ -1288,13 +1288,17 @@
}
}
+#ifdef CONFIG_PM
+ /* We're seeing some problems with unsolicited hot plug events on
+ * PantherPoint after S3, if this is not enabled */
+ if (codec->vendor_id == 0x80862806)
+ codec->bus->power_keep_link_on = 1;
/*
* 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_PM
- if (!(snd_hda_param_read(codec, codec->afg, AC_PAR_POWER_STATE) &
+ else if (!(snd_hda_param_read(codec, codec->afg, AC_PAR_POWER_STATE) &
AC_PWRST_EPSS))
codec->bus->power_keep_link_on = 1;
#endif