diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 3547f797a850..285aac3554df 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -28,6 +28,7 @@
 #include <linux/export.h>
 #include <linux/dma-fence.h>
 #include <linux/ktime.h>
+#include <linux/media-bus-format.h>
 
 #include <drm/drm_atomic.h>
 #include <drm/drm_atomic_helper.h>
@@ -4107,3 +4108,83 @@ drm_atomic_helper_bridge_propagate_bus_fmt(struct drm_bridge *bridge,
 	return input_fmts;
 }
 EXPORT_SYMBOL(drm_atomic_helper_bridge_propagate_bus_fmt);
+
+/**
+ * drm_atomic_helper_bridge_get_hdmi_output_bus_fmts - helper implementing
+ *                                           atomic_get_output_bus_fmts for HDMI
+ * @bridge: pointer to &struct drm_bridge
+ * @bridge_state: pointer to the current bridge state
+ * @crtc_state: pointer to the current CRTC state
+ * @conn_state: pointer to the current connector state
+ * @num_output_fmts: pointer to where the number of entries in the returned array
+ *                   will be stored. Set to 0 if unsuccessful.
+ *
+ * Common implementation for the &drm_bridge_funcs.atomic_get_output_bus_fmts
+ * operation that's applicable to HDMI connectors.
+ *
+ * Returns: a newly allocated array of u32 values of length \*@num_output_fmts,
+ * representing all the MEDIA_BUS_FMTS\_ for the current connector state's
+ * chosen HDMI output bits per compoennt, or %NULL if it fails to allocate one.
+ */
+u32 *
+drm_atomic_helper_bridge_get_hdmi_output_bus_fmts(struct drm_bridge *bridge,
+					struct drm_bridge_state *bridge_state,
+					struct drm_crtc_state *crtc_state,
+					struct drm_connector_state *conn_state,
+					unsigned int *num_output_fmts)
+{
+	unsigned int num_fmts = 0;
+	u32 *out_fmts;
+
+	/*
+	 * bridge->supported_formats is a bit field of BIT(enum drm_output_color_format)
+	 * values. The smallest hweight that is smaller than or equal to
+	 * %DRM_OUTPUT_COLOR_FORMAT_COUNT will do for counting set bits here.
+	 */
+	BUILD_BUG_ON(const_true(DRM_OUTPUT_COLOR_FORMAT_COUNT > 8));
+	out_fmts = kmalloc_array(hweight8(bridge->supported_formats),
+				 sizeof(u32), GFP_KERNEL);
+	if (!out_fmts) {
+		*num_output_fmts = 0;
+		return NULL;
+	}
+
+	switch (conn_state->hdmi.output_bpc) {
+	case 12:
+		if (bridge->supported_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_RGB444))
+			out_fmts[num_fmts++] = MEDIA_BUS_FMT_RGB121212_1X36;
+		if (bridge->supported_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR444))
+			out_fmts[num_fmts++] = MEDIA_BUS_FMT_YUV12_1X36;
+		if (bridge->supported_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR422))
+			out_fmts[num_fmts++] = MEDIA_BUS_FMT_UYVY12_1X24;
+		if (bridge->supported_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR420))
+			out_fmts[num_fmts++] = MEDIA_BUS_FMT_UYYVYY12_0_5X36;
+		break;
+	case 10:
+		if (bridge->supported_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_RGB444))
+			out_fmts[num_fmts++] = MEDIA_BUS_FMT_RGB101010_1X30;
+		if (bridge->supported_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR444))
+			out_fmts[num_fmts++] = MEDIA_BUS_FMT_YUV10_1X30;
+		if (bridge->supported_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR422))
+			out_fmts[num_fmts++] = MEDIA_BUS_FMT_UYVY10_1X20;
+		if (bridge->supported_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR420))
+			out_fmts[num_fmts++] = MEDIA_BUS_FMT_UYYVYY10_0_5X30;
+		break;
+	default:
+		if (bridge->supported_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_RGB444))
+			out_fmts[num_fmts++] = MEDIA_BUS_FMT_RGB888_1X24;
+		if (bridge->supported_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR444))
+			out_fmts[num_fmts++] = MEDIA_BUS_FMT_YUV8_1X24;
+		if (bridge->supported_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR422))
+			out_fmts[num_fmts++] = MEDIA_BUS_FMT_UYVY8_1X16;
+		if (bridge->supported_formats & BIT(DRM_OUTPUT_COLOR_FORMAT_YCBCR420))
+			out_fmts[num_fmts++] = MEDIA_BUS_FMT_UYYVYY8_0_5X24;
+		break;
+	}
+
+	*num_output_fmts = num_fmts;
+
+	return out_fmts;
+}
+EXPORT_SYMBOL(drm_atomic_helper_bridge_get_hdmi_output_bus_fmts);
+
diff --git a/include/drm/drm_atomic_helper.h b/include/drm/drm_atomic_helper.h
index b84152810abb..4cfeec70d648 100644
--- a/include/drm/drm_atomic_helper.h
+++ b/include/drm/drm_atomic_helper.h
@@ -295,4 +295,11 @@ drm_atomic_helper_bridge_propagate_bus_fmt(struct drm_bridge *bridge,
 					u32 output_fmt,
 					unsigned int *num_input_fmts);
 
+u32 *
+drm_atomic_helper_bridge_get_hdmi_output_bus_fmts(struct drm_bridge *bridge,
+					struct drm_bridge_state *bridge_state,
+					struct drm_crtc_state *crtc_state,
+					struct drm_connector_state *conn_state,
+					unsigned int *num_output_fmts);
+
 #endif /* DRM_ATOMIC_HELPER_H_ */