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drm/i915/psr: Do not unnecessarily remove underrun on idle PSR WA

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We are currently removing underrun on idle PSR WA even if it's not
applied. Fix this by checking pkg_c_latency_used on PSR exit as well.

Fixes: 9b1795e9b0 ("drm/i915/psr: Underrun on idle PSR wa only when pkgc latency > delayed vblank")
Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Link: https://lore.kernel.org/r/20250822105846.1023631-1-jouni.hogander@intel.com
This commit is contained in:
Jouni Högander 2025-08-22 13:58:46 +03:00
parent 9cc10041e9
commit c65ee1b1ff
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/i915/display/intel_psr.c
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@ -2095,8 +2095,9 @@ static void intel_psr_exit(struct intel_dp *intel_dp)
drm_WARN_ON(display->drm, !(val & EDP_PSR2_ENABLE));
} else {
if (DISPLAY_VER(display) == 20 ||
IS_DISPLAY_VERx100_STEP(display, 3000, STEP_A0, STEP_B0))
if ((DISPLAY_VER(display) == 20 ||
IS_DISPLAY_VERx100_STEP(display, 3000, STEP_A0, STEP_B0)) &&
intel_dp->psr.pkg_c_latency_used)
intel_dmc_start_pkgc_exit_at_start_of_undelayed_vblank(display,
intel_dp->psr.pipe,
false);