[PATCH v2 3/6] drm/i915: move VBT based eDP port check to intel_bios.c

[Jani Nikula <jani.nikula@xxxxxxxxx>]

Hide knowledge about VBT child devices in intel_bios.c.

Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
---
 drivers/gpu/drm/i915/i915_drv.h   |  1 +
 drivers/gpu/drm/i915/intel_bios.c | 33 +++++++++++++++++++++++++++++++++
 drivers/gpu/drm/i915/intel_dp.c   | 21 +--------------------
 3 files changed, 35 insertions(+), 20 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 24bf770907ae..ac66552cb135 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -3395,6 +3395,7 @@ int intel_bios_init(struct drm_i915_private *dev_priv);
 bool intel_bios_is_valid_vbt(const void *buf, size_t size);
 bool intel_bios_is_tv_present(struct drm_i915_private *dev_priv);
 bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin);
+bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port);
 
 /* intel_opregion.c */
 #ifdef CONFIG_ACPI
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 4f7eba36a849..7f61ca8165f0 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -1522,3 +1522,36 @@ bool intel_bios_is_lvds_present(struct drm_i915_private *dev_priv, u8 *i2c_pin)
 
 	return false;
 }
+
+/**
+ * intel_bios_is_port_edp - is the device in given port eDP
+ * @dev_priv:	i915 device instance
+ * @port:	port to check
+ *
+ * Return true if the device in %port is eDP.
+ */
+bool intel_bios_is_port_edp(struct drm_i915_private *dev_priv, enum port port)
+{
+	union child_device_config *p_child;
+	static const short port_mapping[] = {
+		[PORT_B] = DVO_PORT_DPB,
+		[PORT_C] = DVO_PORT_DPC,
+		[PORT_D] = DVO_PORT_DPD,
+		[PORT_E] = DVO_PORT_DPE,
+	};
+	int i;
+
+	if (!dev_priv->vbt.child_dev_num)
+		return false;
+
+	for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
+		p_child = dev_priv->vbt.child_dev + i;
+
+		if (p_child->common.dvo_port == port_mapping[port] &&
+		    (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) ==
+		    (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS))
+			return true;
+	}
+
+	return false;
+}
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index a073f04a5330..9a4cfdf0cd70 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -5065,14 +5065,6 @@ put_power:
 bool intel_dp_is_edp(struct drm_device *dev, enum port port)
 {
 	struct drm_i915_private *dev_priv = dev->dev_private;
-	union child_device_config *p_child;
-	int i;
-	static const short port_mapping[] = {
-		[PORT_B] = DVO_PORT_DPB,
-		[PORT_C] = DVO_PORT_DPC,
-		[PORT_D] = DVO_PORT_DPD,
-		[PORT_E] = DVO_PORT_DPE,
-	};
 
 	/*
 	 * eDP not supported on g4x. so bail out early just
@@ -5084,18 +5076,7 @@ bool intel_dp_is_edp(struct drm_device *dev, enum port port)
 	if (port == PORT_A)
 		return true;
 
-	if (!dev_priv->vbt.child_dev_num)
-		return false;
-
-	for (i = 0; i < dev_priv->vbt.child_dev_num; i++) {
-		p_child = dev_priv->vbt.child_dev + i;
-
-		if (p_child->common.dvo_port == port_mapping[port] &&
-		    (p_child->common.device_type & DEVICE_TYPE_eDP_BITS) ==
-		    (DEVICE_TYPE_eDP & DEVICE_TYPE_eDP_BITS))
-			return true;
-	}
-	return false;
+	return intel_bios_is_port_edp(dev_priv, port);
 }
 
 void
-- 
2.1.4

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