From 0151486221f0cfa260d110beb33387736753a797 Mon Sep 17 00:00:00 2001
From: Chris Park <chris.park@amd.com>
Date: Thu, 23 Jun 2022 18:21:59 -0400
Subject: drm/amd/display: Reduce SCDC Status Flags Definition
Git-commit: 236124d1167bcc539432b4f6fc19ce1fa015e2ad
Patch-mainline: v6.0-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849

[Why]
Status flags definition is reduced to read
less bytes in SCDC transaction for status update.

[How]
Reduce definition of reserved bytes from 3 to 1
for status update.

Reviewed-by: Charlene Liu <Charlene.Liu@amd.com>
Acked-by: Solomon Chiu <solomon.chiu@amd.com>
Signed-off-by: Chris Park <chris.park@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c
index b13a516ba0f2..d01d2eeed813 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_ddc.c
@@ -93,16 +93,13 @@ union hdmi_scdc_update_read_data {
 };
 
 union hdmi_scdc_status_flags_data {
-	uint8_t byte[2];
+	uint8_t byte;
 	struct {
 		uint8_t CLOCK_DETECTED:1;
 		uint8_t CH0_LOCKED:1;
 		uint8_t CH1_LOCKED:1;
 		uint8_t CH2_LOCKED:1;
 		uint8_t RESERVED:4;
-		uint8_t RESERVED2:8;
-		uint8_t RESERVED3:8;
-
 	} fields;
 };
 
@@ -770,7 +767,7 @@ void dal_ddc_service_read_scdc_data(struct ddc_service *ddc_service)
 				sizeof(scramble_status));
 		offset = HDMI_SCDC_STATUS_FLAGS;
 		dal_ddc_service_query_ddc_data(ddc_service, slave_address,
-				&offset, sizeof(offset), status_data.byte,
+				&offset, sizeof(offset), &status_data.byte,
 				sizeof(status_data.byte));
 	}
 }
-- 
2.38.1