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authorYongqiang Sun <yongqiang.sun@amd.com>2016-12-15 10:50:48 -0500
committerAlex Deucher <alexander.deucher@amd.com>2017-09-26 17:05:26 -0400
commitaa66df58b2f272dad459c9f02fa3718d844b9fc6 (patch)
treece431119dbd868aa21a6be2690a7cdb02f258819 /drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
parentea24af3e21192a719603ed02ec42e549e3c4a66a (diff)
drm/amd/display: Add debug option to disable dmcu
Signed-off-by: Yongqiang Sun <yongqiang.sun@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>
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c')
-rw-r--r--drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c3
1 files changed, 3 insertions, 0 deletions
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