Commit a329598e authored by Roman Li's avatar Roman Li Committed by Alex Deucher
Browse files

drm/amd/display: Clear shared dmub firmware state on init 



[Why]
Reset the shared dmub firmware region on dmub hw init to start with
known state.

[How]
Memset the shared region to 0 in dmub_hw_init().

Suggested-by: default avatarNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: default avatarNicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: default avatarRoman Li <roman.li@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent afa91e2d

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+3 −0
Original line number Diff line number Diff line
@@ -1207,6 +1207,9 @@ static int dm_dmub_hw_init(struct amdgpu_device *adev) 
	memset(fb_info->fb[DMUB_WINDOW_6_FW_STATE].cpu_addr, 0,

	       fb_info->fb[DMUB_WINDOW_6_FW_STATE].size);



	memset(fb_info->fb[DMUB_WINDOW_SHARED_STATE].cpu_addr, 0,

	       fb_info->fb[DMUB_WINDOW_SHARED_STATE].size);



	/* Initialize hardware. */

	memset(&hw_params, 0, sizeof(hw_params));

	hw_params.fb_base = adev->gmc.fb_start;