From 70d9e8cb8b4439dcfd42bee08831ffb1c02a4805 Mon Sep 17 00:00:00 2001 From: Paul Hsieh Date: Tue, 7 May 2019 17:58:58 +0800 Subject: drm/amd/display: disable PSR/ABM before destroy DMCU struct [Why] 1. DMCU is not running on some platform but driver still send ABM command. It may cause assert due to DMCU is not alive. 2. To make sure PSR disable when driver disable [How] 1. Add dmcu_is_running in ABM struct, driver can check this flag to determine driver should send ABM command or not. 2. Send PSR disable command when destroy PSR Signed-off-by: Paul Hsieh Reviewed-by: Anthony Koo Acked-by: Leo Li Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/display/dc/inc/hw/abm.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/gpu/drm/amd/display/dc/inc/hw/abm.h') diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/abm.h b/drivers/gpu/drm/amd/display/dc/inc/hw/abm.h index 86dc39a02408..d607b3191954 100644 --- a/drivers/gpu/drm/amd/display/dc/inc/hw/abm.h +++ b/drivers/gpu/drm/amd/display/dc/inc/hw/abm.h @@ -37,7 +37,7 @@ struct abm_backlight_registers { struct abm { struct dc_context *ctx; const struct abm_funcs *funcs; - + bool dmcu_is_running; /* registers setting needs to be saved and restored at InitBacklight */ struct abm_backlight_registers stored_backlight_registers; }; -- cgit v1.2.3