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drm/amd/display: Add debug option to disable dmcu

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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>
This commit is contained in:
Yongqiang Sun 2016-12-15 10:50:48 -05:00 • committed by Alex Deucher
parent ea24af3e21
commit aa66df58b2
2 changed files with 4 additions and 0 deletions
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1
drivers/gpu/drm/amd/display/dc/dc.h
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@ -147,6 +147,7 @@ struct dc_debug {
bool disable_dfs_bypass;
bool disable_power_gate;
bool disable_clock_gate;
bool disable_dmcu;
};
struct dc {

3
drivers/gpu/drm/amd/display/dc/dce/dce_link_encoder.c
View file

@ -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