From: Yongqiang Sun <[email protected]>
Change-Id: I5b27513237c6cc9a2fee239a6a77339f3acf962c
Signed-off-by: Yongqiang Sun <[email protected]>
Reviewed-by: Tony Cheng <[email protected]>
Acked-by: Harry Wentland <[email protected]>
---
drivers/gpu/drm/amd/display/dc/dc.h | 1 +
drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c | 3 +++
2 files changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h
b/drivers/gpu/drm/amd/display/dc/dc.h
index 4cb194831504..c7905b367d65 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -147,6 +147,7 @@ struct dc_debug {
bool disable_dfs_bypass;
bool disable_power_gate;
bool disable_clock_gate;
+ bool disable_dmcu;
};
struct dc {
diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
index c73d6054cdda..a8a2290d47db 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
@@ -1821,6 +1821,9 @@ void dce110_link_encoder_init_dmcu_backlight_settings(
uint32_t s2;
uint32_t value;
+ if (enc->ctx->dc->debug.disable_dmcu)
+ return;
+
bl_pwm_cntl = REG_READ(BL_PWM_CNTL);
/* It must not be 0, so we have to restore them
--
2.9.3
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