1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_dsi.h b/drivers/gpu/drm/i915/intel_dsi.h
index 657eb5c1b9d8..97a6f621774f 100644
--- a/drivers/gpu/drm/i915/intel_dsi.h
+++ b/drivers/gpu/drm/i915/intel_dsi.h
@@ -127,6 +127,22 @@ struct intel_dsi {
 	u16 panel_pwr_cycle_delay;
 };
 
+/* XXX: Transitional before dual port configuration */
+static inline enum port intel_dsi_pipe_to_port(enum pipe pipe)
+{
+	if (pipe == PIPE_A)
+		return PORT_A;
+	else if (pipe == PIPE_B)
+		return PORT_C;
+
+	WARN(1, "DSI on pipe %c, assuming port C\n", pipe_name(pipe));
+	return PORT_C;
+}
+
+#define for_each_dsi_port(__port, __ports_mask) \
+	for ((__port) = PORT_A; (__port) < I915_MAX_PORTS; (__port)++)	\
+		if ((__ports_mask) & (1 << (__port)))
+
 static inline struct intel_dsi *enc_to_intel_dsi(struct drm_encoder *encoder)
 {
 	return container_of(encoder, struct intel_dsi, base.base);