github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-31 02:24:24 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/i915/alpm: ALPM disable fixes

Browse Source 
PORT_ALPM_CTL is supposed to be written only before link training. Remove
writing it from ALPM disable.

Also clearing ALPM_CTL_ALPM_AUX_LESS_ENABLE and is not about disabling ALPM
but switching to AUX-Wake ALPM. Stop touching this bit on ALPM disable.

Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/7153
Fixes: 1ccbf13586 ("drm/i915/psr: Enable ALPM on source side for eDP Panel replay")
Cc: Animesh Manna <animesh.manna@intel.com>
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: <stable@vger.kernel.org> # v6.10+
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Michał Grzelak <michal.grzelak@intel.com>
Link: https://patch.msgid.link/20260212062731.397801-1-jouni.hogander@intel.com
This commit is contained in:
Jouni Högander 2026-02-12 08:27:31 +02:00
parent 84fa9532c6
commit 008304c9ae
1 changed files with 1 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/gpu/drm/i915/display/intel_alpm.c
View File

@ -604,12 +604,7 @@ void intel_alpm_disable(struct intel_dp *intel_dp)
mutex_lock(&intel_dp->alpm.lock);
intel_de_rmw(display, ALPM_CTL(display, cpu_transcoder),
ALPM_CTL_ALPM_ENABLE | ALPM_CTL_LOBF_ENABLE |
ALPM_CTL_ALPM_AUX_LESS_ENABLE, 0);
intel_de_rmw(display,
PORT_ALPM_CTL(cpu_transcoder),
PORT_ALPM_CTL_ALPM_AUX_LESS_ENABLE, 0);
ALPM_CTL_ALPM_ENABLE | ALPM_CTL_LOBF_ENABLE, 0);
drm_dbg_kms(display->drm, "Disabling ALPM\n");
mutex_unlock(&intel_dp->alpm.lock);