[Intel-xe] [PATCH 14/42] drm/i915/lnl: Add fake PCH

[Lucas De Marchi]

From: Gustavo Sousa <gustavo.sousa at intel.com>

LNL has south display on the same SoC. As such, define a new fake PCH
entry for it.

Signed-off-by: Gustavo Sousa <gustavo.sousa at intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
 drivers/gpu/drm/i915/soc/intel_pch.c | 5 ++++-
 drivers/gpu/drm/i915/soc/intel_pch.h | 2 ++
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/soc/intel_pch.c b/drivers/gpu/drm/i915/soc/intel_pch.c
index cf795ecdcc26..5b9a01d26cab 100644
--- a/drivers/gpu/drm/i915/soc/intel_pch.c
+++ b/drivers/gpu/drm/i915/soc/intel_pch.c
@@ -220,7 +220,10 @@ void intel_detect_pch(struct drm_i915_private *dev_priv)
 	 * South display engine on the same PCI device: just assign the fake
 	 * PCH.
 	 */
-	if (IS_DG2(dev_priv)) {
+	if (IS_LUNARLAKE(dev_priv)) {
+		dev_priv->pch_type = PCH_LNL;
+		return;
+	} else if (IS_DG2(dev_priv)) {
 		dev_priv->pch_type = PCH_DG2;
 		return;
 	} else if (IS_DG1(dev_priv)) {
diff --git a/drivers/gpu/drm/i915/soc/intel_pch.h b/drivers/gpu/drm/i915/soc/intel_pch.h
index 32aff5a70d04..1b03ea60a7a8 100644
--- a/drivers/gpu/drm/i915/soc/intel_pch.h
+++ b/drivers/gpu/drm/i915/soc/intel_pch.h
@@ -30,6 +30,7 @@ enum intel_pch {
 	/* Fake PCHs, functionality handled on the same PCI dev */
 	PCH_DG1 = 1024,
 	PCH_DG2,
+	PCH_LNL,
 };
 
 #define INTEL_PCH_DEVICE_ID_MASK		0xff80
@@ -66,6 +67,7 @@ enum intel_pch {
 
 #define INTEL_PCH_TYPE(dev_priv)		((dev_priv)->pch_type)
 #define INTEL_PCH_ID(dev_priv)			((dev_priv)->pch_id)
+#define HAS_PCH_LNL(dev_priv)			(INTEL_PCH_TYPE(dev_priv) == PCH_LNL)
 #define HAS_PCH_MTP(dev_priv)			(INTEL_PCH_TYPE(dev_priv) == PCH_MTP)
 #define HAS_PCH_DG2(dev_priv)			(INTEL_PCH_TYPE(dev_priv) == PCH_DG2)
 #define HAS_PCH_ADP(dev_priv)			(INTEL_PCH_TYPE(dev_priv) == PCH_ADP)
-- 
2.40.1