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

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Date:   Mon, 29 Mar 2021 09:56:55 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Prike Liang <Prike.Liang@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Huang Rui <ray.huang@....com>
Subject: [PATCH 5.11 099/254] drm/amdgpu: fix the hibernation suspend with s0ix

From: Prike Liang <Prike.Liang@....com>

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@....com>
Acked-by: Alex Deucher <alexander.deucher@....com>
Acked-by: Huang Rui <ray.huang@....com>
Signed-off-by: Alex Deucher <alexander.deucher@....com>
Cc: stable@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 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