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Merge tag 'drm-intel-fixes-2024-01-26' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

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- PSR fix for HSW

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ZbPGBL9lj4DxxIW1@jlahtine-mobl.ger.corp.intel.com
This commit is contained in:
Dave Airlie 2024-01-27 03:58:24 +10:00
commit 9c4a1126ad
1 changed files with 12 additions and 2 deletions
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14
drivers/gpu/drm/i915/display/intel_psr.c
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@ -1525,8 +1525,18 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp,
* can rely on frontbuffer tracking.
*/
mask = EDP_PSR_DEBUG_MASK_MEMUP |
EDP_PSR_DEBUG_MASK_HPD |
EDP_PSR_DEBUG_MASK_LPSP;
EDP_PSR_DEBUG_MASK_HPD;
/*
* For some unknown reason on HSW non-ULT (or at least on
* Dell Latitude E6540) external displays start to flicker
* when PSR is enabled on the eDP. SR/PC6 residency is much
* higher than should be possible with an external display.
* As a workaround leave LPSP unmasked to prevent PSR entry
* when external displays are active.
*/
if (DISPLAY_VER(dev_priv) >= 8 || IS_HASWELL_ULT(dev_priv))
mask |= EDP_PSR_DEBUG_MASK_LPSP;
if (DISPLAY_VER(dev_priv) < 20)
mask |= EDP_PSR_DEBUG_MASK_MAX_SLEEP;