drm/i915/sdvo: Reduce copy-pasta in output setup

Avoid having to call the output init function for each
output type separately. We can just call the right one
based on the "class" of the output.

Technically we could just walk the bits of the bitmask
but that could change the order in which we initialize
the outputs. To avoid any behavioural changes keep to
the same explicit probe order as before.

Signed-off-by: Ville Syrjälä <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Reviewed-by: Jani Nikula <[email protected]>

Author: vsyrjala

drivers/gpu/drm/i915/display/intel_sdvo.c

@@ -2931,11 +2931,38 @@ static u16 intel_sdvo_filter_output_flags(u16 flags)
 	return flags;
 }
 
+static bool intel_sdvo_output_init(struct intel_sdvo *sdvo, u16 type)
+{
+	if (type & SDVO_TMDS_MASK)
+		return intel_sdvo_dvi_init(sdvo, type);
+	else if (type & SDVO_TV_MASK)
+		return intel_sdvo_tv_init(sdvo, type);
+	else if (type & SDVO_RGB_MASK)
+		return intel_sdvo_analog_init(sdvo, type);
+	else if (type & SDVO_LVDS_MASK)
+		return intel_sdvo_lvds_init(sdvo, type);
+	else
+		return false;
+}
+
 static bool
 intel_sdvo_output_setup(struct intel_sdvo *intel_sdvo)
 {
+	static const u16 probe_order[] = {
+		SDVO_OUTPUT_TMDS0,
+		SDVO_OUTPUT_TMDS1,
+		/* TV has no XXX1 function block */
+		SDVO_OUTPUT_SVID0,
+		SDVO_OUTPUT_CVBS0,
+		SDVO_OUTPUT_YPRPB0,
+		SDVO_OUTPUT_RGB0,
+		SDVO_OUTPUT_RGB1,
+		SDVO_OUTPUT_LVDS0,
+		SDVO_OUTPUT_LVDS1,
+	};
 	struct drm_i915_private *i915 = to_i915(intel_sdvo->base.base.dev);
 	u16 flags;
+	int i;
 
 	flags = intel_sdvo_filter_output_flags(intel_sdvo->caps.output_flags);
 
@@ -2949,42 +2976,15 @@ intel_sdvo_output_setup(struct intel_sdvo *intel_sdvo)
 
 	intel_sdvo_select_ddc_bus(i915, intel_sdvo);
 
-	if (flags & SDVO_OUTPUT_TMDS0)
-		if (!intel_sdvo_dvi_init(intel_sdvo, SDVO_OUTPUT_TMDS0))
-			return false;
+	for (i = 0; i < ARRAY_SIZE(probe_order); i++) {
+		u16 type = flags & probe_order[i];
 
-	if (flags & SDVO_OUTPUT_TMDS1)
-		if (!intel_sdvo_dvi_init(intel_sdvo, SDVO_OUTPUT_TMDS1))
-			return false;
+		if (!type)
+			continue;
 
-	/* TV has no XXX1 function block */
-	if (flags & SDVO_OUTPUT_SVID0)
-		if (!intel_sdvo_tv_init(intel_sdvo, SDVO_OUTPUT_SVID0))
-			return false;
-
-	if (flags & SDVO_OUTPUT_CVBS0)
-		if (!intel_sdvo_tv_init(intel_sdvo, SDVO_OUTPUT_CVBS0))
-			return false;
-
-	if (flags & SDVO_OUTPUT_YPRPB0)
-		if (!intel_sdvo_tv_init(intel_sdvo, SDVO_OUTPUT_YPRPB0))
-			return false;
-
-	if (flags & SDVO_OUTPUT_RGB0)
-		if (!intel_sdvo_analog_init(intel_sdvo, SDVO_OUTPUT_RGB0))
-			return false;
-
-	if (flags & SDVO_OUTPUT_RGB1)
-		if (!intel_sdvo_analog_init(intel_sdvo, SDVO_OUTPUT_RGB1))
-			return false;
-
-	if (flags & SDVO_OUTPUT_LVDS0)
-		if (!intel_sdvo_lvds_init(intel_sdvo, SDVO_OUTPUT_LVDS0))
-			return false;
-
-	if (flags & SDVO_OUTPUT_LVDS1)
-		if (!intel_sdvo_lvds_init(intel_sdvo, SDVO_OUTPUT_LVDS1))
+		if (!intel_sdvo_output_init(intel_sdvo, type))
 			return false;
+	}
 
 	intel_sdvo->base.pipe_mask = ~0;