Reviewed-by: Gwan-gyeong Mun <gwan-gyeong.mun@xxxxxxxxx>
Tested-by: Gwan-gyeong Mun <gwan-gyeong.mun@xxxxxxxxx>
On Thu, 2021-04-08 at 13:49 -0700, José Roberto de Souza wrote:
> This reverts commit 71c1a4998320962f7b8362b2c5ee36610d49e8fb.
>
> 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@xxxxxxxxx>
> Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_psr.c | 16 +---------------
> 1 file changed, 1 insertion(+), 15 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
> b/drivers/gpu/drm/i915/display/intel_psr.c
> index 32d3d56259c2..6a61fe42686e 100644
> --- a/drivers/gpu/drm/i915/display/intel_psr.c
> +++ b/drivers/gpu/drm/i915/display/intel_psr.c
> @@ -1161,21 +1161,7 @@ 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
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