drm/i915/display: Defeature PSR2 for RKL and ADL-S

PSR2 is defeatured for RKL and ADL-S, no important power impact as
those are desktop CPUs and PSR2 was not even enabled by default yet
in platforms without PSR2 HW tracking.

HSDES: 14011750631
HSDES: 14011741325
BSpec: 53273
Cc: Caz Yokoyama <Caz.Yokoyama@intel.com>
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210408214205.327704-1-jose.souza@intel.com

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 32d3d56..2627d0b 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -739,6 +739,12 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
                return false;
        }
 
+       /* Wa_16011181250 */
+       if (IS_ROCKETLAKE(dev_priv) || IS_ALDERLAKE_S(dev_priv)) {
+               drm_dbg_kms(&dev_priv->drm, "PSR2 is defeatured for this platform\n");
+               return false;
+       }
+
        if (!transcoder_has_psr2(dev_priv, crtc_state->cpu_transcoder)) {
                drm_dbg_kms(&dev_priv->drm,
                            "PSR2 not supported in transcoder %s\n",