[PATCH 5.11 099/254] drm/amdgpu: fix the hibernation suspend with s0ix

[Greg Kroah-Hartman]

From: Prike Liang <Prike.Liang@xxxxxxx>

commit 9aa26019c1a60013ea866d460de6392acb1712ee upstream.

During system hibernation suspend still need un-gate gfx CG/PG firstly to handle HW
status check before HW resource destory.

Signed-off-by: Prike Liang <Prike.Liang@xxxxxxx>
Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
Acked-by: Huang Rui <ray.huang@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -2666,7 +2666,7 @@ static int amdgpu_device_ip_suspend_phas
 {
 	int i, r;
 
-	if (adev->in_poweroff_reboot_com ||
+	if (adev->in_poweroff_reboot_com || adev->in_hibernate ||
 	    !amdgpu_acpi_is_s0ix_supported(adev) || amdgpu_in_reset(adev)) {
 		amdgpu_device_set_pg_state(adev, AMD_PG_STATE_UNGATE);
 		amdgpu_device_set_cg_state(adev, AMD_CG_STATE_UNGATE);
@@ -3727,7 +3727,11 @@ int amdgpu_device_suspend(struct drm_dev
 
 	amdgpu_fence_driver_suspend(adev);
 
-	if (adev->in_poweroff_reboot_com ||
+	/*
+	 * TODO: Need figure out the each GNB IP idle off dependency and then
+	 * improve the AMDGPU suspend/resume sequence for system-wide Sx entry/exit.
+	 */
+	if (adev->in_poweroff_reboot_com || adev->in_hibernate ||
 	    !amdgpu_acpi_is_s0ix_supported(adev) || amdgpu_in_reset(adev))
 		r = amdgpu_device_ip_suspend_phase2(adev);
 	else