From: Anthony Koo <Anthony.Koo@amd.com>
Date: Wed, 3 May 2017 15:19:07 -0400
Subject: drm/amd/display: use signal type to decide whether to set backlight
Git-commit: c282ca3390d3327e0f8004d33acb9b022245a958
Patch-mainline: v4.15-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166

Signed-off-by: Anthony Koo <Anthony.Koo@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -1389,7 +1389,7 @@ bool dc_link_set_backlight_level(const s
 	dm_logger_write(link->ctx->logger, LOG_BACKLIGHT,
 			"New Backlight level: %d (0x%X)\n", level, level);
 
-	if (link->device_tag.dev_id.device_type == DEVICE_TYPE_LCD) {
+	if (dc_is_embedded_signal(dc_link->connector_signal)) {
 		if (stream != NULL) {
 			core_stream = DC_STREAM_TO_CORE(stream);
 			for (i = 0; i < MAX_PIPES; i++) {