drm/i915: refer to pin instead of port in the intel_i2c.c interfaces

Rename intel_gmbus_is_port_valid to intel_gmbus_is_valid_pin, and rename
port parameters to pin as well. This matches usage all around, as
usually a pin is passed to the validity check function. No functional
changes.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/i915_drv.h

@@ -3065,13 +3065,13 @@ void i915_teardown_sysfs(struct drm_device *dev_priv);
 /* intel_i2c.c */
 extern int intel_setup_gmbus(struct drm_device *dev);
 extern void intel_teardown_gmbus(struct drm_device *dev);
-static inline bool intel_gmbus_is_port_valid(unsigned port)
+static inline bool intel_gmbus_is_valid_pin(unsigned int pin)
 {
-	return (port >= GMBUS_PIN_SSC && port <= GMBUS_PIN_DPD);
+	return (pin >= GMBUS_PIN_SSC && pin <= GMBUS_PIN_DPD);
 }
 
-extern struct i2c_adapter *intel_gmbus_get_adapter(
-		struct drm_i915_private *dev_priv, unsigned port);
+extern struct i2c_adapter *
+intel_gmbus_get_adapter(struct drm_i915_private *dev_priv, unsigned int pin);
 extern void intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed);
 extern void intel_gmbus_force_bit(struct i2c_adapter *adapter, bool force_bit);
 static inline bool intel_gmbus_is_forced_bit(struct i2c_adapter *adapter)

drivers/gpu/drm/i915/intel_bios.c

@@ -438,7 +438,7 @@ parse_general_definitions(struct drm_i915_private *dev_priv,
 		if (block_size >= sizeof(*general)) {
 			int bus_pin = general->crt_ddc_gmbus_pin;
 			DRM_DEBUG_KMS("crt_ddc_bus_pin: %d\n", bus_pin);
-			if (intel_gmbus_is_port_valid(bus_pin))
+			if (intel_gmbus_is_valid_pin(bus_pin))
 				dev_priv->vbt.crt_ddc_pin = bus_pin;
 		} else {
 			DRM_DEBUG_KMS("BDB_GD too small (%d). Invalid.\n",

drivers/gpu/drm/i915/intel_dvo.c

@@ -502,7 +502,7 @@ void intel_dvo_init(struct drm_device *dev)
 		 * special cases, but otherwise default to what's defined
 		 * in the spec.
 		 */
-		if (intel_gmbus_is_port_valid(dvo->gpio))
+		if (intel_gmbus_is_valid_pin(dvo->gpio))
 			gpio = dvo->gpio;
 		else if (dvo->type == INTEL_DVO_CHIP_LVDS)
 			gpio = GMBUS_PIN_SSC;

drivers/gpu/drm/i915/intel_i2c.c

@@ -574,12 +574,12 @@ int intel_setup_gmbus(struct drm_device *dev)
 }
 
 struct i2c_adapter *intel_gmbus_get_adapter(struct drm_i915_private *dev_priv,
-					    unsigned port)
+					    unsigned int pin)
 {
-	WARN_ON(!intel_gmbus_is_port_valid(port));
+	WARN_ON(!intel_gmbus_is_valid_pin(pin));
 	/* -1 to map pin pair to gmbus index */
-	return (intel_gmbus_is_port_valid(port)) ?
-		&dev_priv->gmbus[port - 1].adapter : NULL;
+	return (intel_gmbus_is_valid_pin(pin)) ?
+		&dev_priv->gmbus[pin - 1].adapter : NULL;
 }
 
 void intel_gmbus_set_speed(struct i2c_adapter *adapter, int speed)

drivers/gpu/drm/i915/intel_lvds.c

@@ -781,7 +781,7 @@ static bool lvds_is_present_in_vbt(struct drm_device *dev,
 		    child->device_type != DEVICE_TYPE_LFP)
 			continue;
 
-		if (intel_gmbus_is_port_valid(child->i2c_pin))
+		if (intel_gmbus_is_valid_pin(child->i2c_pin))
 			*i2c_pin = child->i2c_pin;
 
 		/* However, we cannot trust the BIOS writers to populate

drivers/gpu/drm/i915/intel_sdvo.c

@@ -2291,7 +2291,7 @@ intel_sdvo_select_i2c_bus(struct drm_i915_private *dev_priv,
 	else
 		mapping = &dev_priv->sdvo_mappings[1];
 
-	if (mapping->initialized && intel_gmbus_is_port_valid(mapping->i2c_pin))
+	if (mapping->initialized && intel_gmbus_is_valid_pin(mapping->i2c_pin))
 		pin = mapping->i2c_pin;
 	else
 		pin = GMBUS_PIN_DPB;