From c165305a3b10ecf1a78fef50ab6ede2d2ac1525b Mon Sep 17 00:00:00 2001
From: Chris Park <chris.park@amd.com>
Date: Thu, 23 Jun 2022 18:21:59 -0400
Subject: [PATCH] drm/amd/display: Reduce SCDC Status Flags Definition
[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>
---
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 b13a516ba0f20..d01d2eeed8135 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));
}
}
--
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