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Revert "drm/i915/tgl/psr: Fix glitches when doing frontbuffer modifications"

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This reverts commit 71c1a49983.

The proper fix is Wa_14013723622, so now we can revert this WA and
get back some power savings.

Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Tested-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210408204917.254272-2-jose.souza@intel.com
This commit is contained in:
José Roberto de Souza 2021-04-08 13:49:17 -07:00
parent 41c70d2b71
commit f10fe8f89d
1 changed files with 1 additions and 15 deletions
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16
drivers/gpu/drm/i915/display/intel_psr.c
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@ -1167,21 +1167,7 @@ static void psr_force_hw_tracking_exit(struct intel_dp *intel_dp)
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
if (IS_TIGERLAKE(dev_priv))
/*
* Writes to CURSURFLIVE in TGL are causing IOMMU errors and
* visual glitches that are often reproduced when executing
* CPU intensive workloads while a eDP 4K panel is attached.
*
* Manually exiting PSR causes the frontbuffer to be updated
* without glitches and the IOMMU errors are also gone but
* this comes at the cost of less time with PSR active.
*
* So using this workaround until this issue is root caused
* and a better fix is found.
*/
intel_psr_exit(intel_dp);
else if (DISPLAY_VER(dev_priv) >= 9)
if (DISPLAY_VER(dev_priv) >= 9)
/*
* Display WA #0884: skl+
* This documented WA for bxt can be safely applied