[Intel-gfx] [PATCH] drm/i915/display: hide workaround for broken vbt in intel_bios.c

[Lucas De Marchi]

Instead of poluting the normal code path in intel_display.c, make
intel_bios.c handle the brokenness of the VBT.

Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
---
 drivers/gpu/drm/i915/display/intel_bios.c    | 15 +++++++++++++++
 drivers/gpu/drm/i915/display/intel_display.c | 14 ++------------
 2 files changed, 17 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c
index befab891a6b9..e9f828452412 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -1852,6 +1852,14 @@ intel_bios_encoder_supports_edp(const struct intel_bios_encoder_data *devdata)
 		devdata->child.device_type & DEVICE_TYPE_INTERNAL_CONNECTOR;
 }
 
+static bool skip_broken_vbt(struct drm_i915_private *i915, enum port port)
+{
+	if (port == PORT_F && (IS_ICELAKE(i915) || IS_CANNONLAKE(i915)))
+		return !IS_ICL_WITH_PORT_F(i915) && !IS_CNL_WITH_PORT_F(i915);
+
+	return false;
+}
+
 static void parse_ddi_port(struct drm_i915_private *i915,
 			   struct intel_bios_encoder_data *devdata)
 {
@@ -1865,6 +1873,13 @@ static void parse_ddi_port(struct drm_i915_private *i915,
 	if (port == PORT_NONE)
 		return;
 
+	if (skip_broken_vbt(i915, port)) {
+		drm_dbg_kms(&i915->drm,
+			    "VBT reports port %c as supported, but that can't be true: skipping\n",
+			    port_name(port));
+		return;
+	}
+
 	info = &i915->vbt.ddi_port_info[port];
 
 	if (info->devdata) {
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 55f8f2ceada2..87a85de5e03d 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -10868,15 +10868,7 @@ static void intel_setup_outputs(struct drm_i915_private *dev_priv)
 		intel_ddi_init(dev_priv, PORT_C);
 		intel_ddi_init(dev_priv, PORT_D);
 		intel_ddi_init(dev_priv, PORT_E);
-
-		/*
-		 * On some ICL SKUs port F is not present, but broken VBTs mark
-		 * the port as present. Only try to initialize port F for the
-		 * SKUs that may actually have it.
-		 */
-		if (IS_ICL_WITH_PORT_F(dev_priv))
-			intel_ddi_init(dev_priv, PORT_F);
-
+		intel_ddi_init(dev_priv, PORT_F);
 		icl_dsi_init(dev_priv);
 	} else if (IS_GEMINILAKE(dev_priv) || IS_BROXTON(dev_priv)) {
 		intel_ddi_init(dev_priv, PORT_A);
@@ -10889,9 +10881,7 @@ static void intel_setup_outputs(struct drm_i915_private *dev_priv)
 		intel_ddi_init(dev_priv, PORT_C);
 		intel_ddi_init(dev_priv, PORT_D);
 		intel_ddi_init(dev_priv, PORT_E);
-
-		if (IS_CNL_WITH_PORT_F(dev_priv))
-			intel_ddi_init(dev_priv, PORT_F);
+		intel_ddi_init(dev_priv, PORT_F);
 	} else if (HAS_DDI(dev_priv)) {
 		u32 found;
 
-- 
2.31.1