[Intel-gfx] [PATCH v2] drm/i915/adlp: Extend PSR2 support in transcoder B

[José Roberto de Souza]

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 at intel.com> # v1
Cc: Jani Nikula <jani.nikula at intel.com>
Cc: Mika Kahola <mika.kahola at intel.com>
Cc: Jouni Hogander <jouni.hogander at intel.com>
Signed-off-by: José Roberto de Souza <jose.souza at intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 8d08e3cf08c1f..33b50646b9c97 100644
--- 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;
-- 
2.33.1