Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit c9adeefd authored by David Henningsson's avatar David Henningsson Committed by Takashi Iwai
Browse files

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: default avatarCyrus Lien <cyrus.lien@canonical.com>
Signed-off-by: default avatarDavid Henningsson <david.henningsson@canonical.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 44923632

sound/pci/hda/patch_hdmi.c

+6 −2
Original line number Original line Diff line number Diff line
@@ -1288,13 +1288,17 @@ static int hdmi_parse_codec(struct hda_codec *codec) 
		}

		}

	}

	}





#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

	 * G45/IbexPeak don't support EPSS: the unsolicited pin hot plug event

	 * can be lost and presence sense verb will become inaccurate if the

	 * can be lost and presence sense verb will become inaccurate if the

	 * HDA link is powered off at hot plug or hw initialization time.

	 * HDA link is powered off at hot plug or hw initialization time.

	 */

	 */

#ifdef CONFIG_PM

	else if (!(snd_hda_param_read(codec, codec->afg, AC_PAR_POWER_STATE) &

	if (!(snd_hda_param_read(codec, codec->afg, AC_PAR_POWER_STATE) &

	      AC_PWRST_EPSS))

	      AC_PWRST_EPSS))

		codec->bus->power_keep_link_on = 1;

		codec->bus->power_keep_link_on = 1;

#endif

#endif