drm/i915/adlp: Extend PSR2 support in transcoder B

PSR2 is supported in transcoder A and B on Alderlake-P.

v2:
- explicity checking for transcoder A and B to avoid invalid transcoder

BSpec: 49185
Reviewed-by: Jouni Högander <jouni.hogander@intel.com> # v1
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Mika Kahola <mika.kahola@intel.com>
Cc: Jouni Hogander <jouni.hogander@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Reviewed-by: Mika Kahola <mika.kahola@intel.com> # v2
Link: https://patchwork.freedesktop.org/patch/msgid/20211027180545.55660-1-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 8d08e3c..33b5064 100644 (file)
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -588,7 +588,9 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp)
 static bool
 transcoder_has_psr2(struct drm_i915_private *dev_priv, enum transcoder trans)
 {
-       if (DISPLAY_VER(dev_priv) >= 12)
+       if (IS_ALDERLAKE_P(dev_priv))
+               return trans == TRANSCODER_A || trans == TRANSCODER_B;
+       else if (DISPLAY_VER(dev_priv) >= 12)
                return trans == TRANSCODER_A;
        else
                return trans == TRANSCODER_EDP;