[PATCH v6 4/9] drm/i915/cx0: Extend C10 check to PTL

[Clint Taylor <clinton.a.taylor@intel.com>]

From: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>

When deciding the type of the phy, add PTL support to make
sure the correct path is taken for selection of C10 PHY.
Only port A is connected C10 PHY for Pantherlake.

Bspec:  72571
Signed-off-by: Dnyaneshwar Bhadane <dnyaneshwar.bhadane@intel.com>
Signed-off-by: Matt Atwood <matthew.s.atwood@intel.com>
Signed-off-by: Clint Taylor <Clinton.A.Taylor@intel.com>
Reviewed-by: Gustavo Sousa <gustavo.sousa@intel.com>
---
 drivers/gpu/drm/i915/display/intel_cx0_phy.c      | 3 +++
 drivers/gpu/drm/xe/compat-i915-headers/i915_drv.h | 1 +
 2 files changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_cx0_phy.c b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
index d05daa7a2b03..4d6e1c135bdc 100644
--- a/drivers/gpu/drm/i915/display/intel_cx0_phy.c
+++ b/drivers/gpu/drm/i915/display/intel_cx0_phy.c
@@ -34,6 +34,9 @@ bool intel_encoder_is_c10phy(struct intel_encoder *encoder)
 	struct drm_i915_private *i915 = to_i915(encoder->base.dev);
 	enum phy phy = intel_encoder_to_phy(encoder);
 
+	if (IS_PANTHERLAKE(i915) && phy == PHY_A)
+		return true;
+
 	if ((IS_LUNARLAKE(i915) || IS_METEORLAKE(i915)) && phy < PHY_C)
 		return true;
 
diff --git a/drivers/gpu/drm/xe/compat-i915-headers/i915_drv.h b/drivers/gpu/drm/xe/compat-i915-headers/i915_drv.h
index b7041b578e5e..bd8c3de57dcd 100644
--- a/drivers/gpu/drm/xe/compat-i915-headers/i915_drv.h
+++ b/drivers/gpu/drm/xe/compat-i915-headers/i915_drv.h
@@ -67,6 +67,7 @@ static inline struct drm_i915_private *to_i915(const struct drm_device *dev)
 #define IS_METEORLAKE(dev_priv) IS_PLATFORM(dev_priv, XE_METEORLAKE)
 #define IS_LUNARLAKE(dev_priv) IS_PLATFORM(dev_priv, XE_LUNARLAKE)
 #define IS_BATTLEMAGE(dev_priv)  IS_PLATFORM(dev_priv, XE_BATTLEMAGE)
+#define IS_PANTHERLAKE(dev_priv) IS_PLATFORM(dev_priv, XE_PANTHERLAKE)
 
 #define IS_HASWELL_ULT(dev_priv) (dev_priv && 0)
 #define IS_BROADWELL_ULT(dev_priv) (dev_priv && 0)
-- 
2.25.1