Commit e715be87 authored by Mario Limonciello's avatar Mario Limonciello Committed by Peng Zhang
Browse files

drm/amd/display: Disable PSR-SU on Parade 0803 TCON again 

stable inclusion
from stable-v6.6.15
commit 107a11637f43e7cdcca96c09525481e38b004455
bugzilla: https://gitee.com/openeuler/kernel/issues/I99K53

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=107a11637f43e7cdcca96c09525481e38b004455



--------------------------------

commit e7ab758741672acb21c5d841a9f0309d30e48a06 upstream.

When screen brightness is rapidly changed and PSR-SU is enabled the
display hangs on panels with this TCON even on the latest DCN 3.1.4
microcode (0x8002a81 at this time).

This was disabled previously as commit 072030b1 ("drm/amd: Disable
PSR-SU on Parade 0803 TCON") but reverted as commit 1e66a17c ("Revert
"drm/amd: Disable PSR-SU on Parade 0803 TCON"") in favor of testing for
a new enough microcode (commit cd2e31a9 ("drm/amd/display: Set minimum
requirement for using PSR-SU on Phoenix")).

As hangs are still happening specifically with this TCON, disable PSR-SU
again for it until it can be root caused.

Cc: stable@vger.kernel.org
Cc: aaron.ma@canonical.com
Cc: binli@gnome.org
Cc: Marc Rossi <Marc.Rossi@amd.com>
Cc: Hamza Mahfooz <Hamza.Mahfooz@amd.com>
Signed-off-by: default avatarMario Limonciello <mario.limonciello@amd.com>
Link: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2046131


Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Reviewed-by: default avatarHarry Wentland <harry.wentland@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarZhangPeng <zhangpeng362@huawei.com>
parent 3ffeb812

drivers/gpu/drm/amd/display/modules/power/power_helpers.c

+2 −0
Original line number Diff line number Diff line
@@ -839,6 +839,8 @@ bool is_psr_su_specific_panel(struct dc_link *link) 
				((dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x08) ||

				(dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x07)))

				isPSRSUSupported = false;

			else if (dpcd_caps->sink_dev_id_str[1] == 0x08 && dpcd_caps->sink_dev_id_str[0] == 0x03)

				isPSRSUSupported = false;

			else if (dpcd_caps->psr_info.force_psrsu_cap == 0x1)

				isPSRSUSupported = true;

		}