[PATCH AUTOSEL 5.15 31/36] drm/amd: Only run s3 or s0ix if system is configured properly

[Sasha Levin]

From: Mario Limonciello <mario.limonciello at amd.com>

[ Upstream commit 04ef860469fda6a646dc841190d05b31fae68e8c ]

This will cause misconfigured systems to not run the GPU suspend
routines.

* In APUs that are properly configured system will go into s2idle.
* In APUs that are intended to be S3 but user selects
  s2idle the GPU will stay fully powered for the suspend.
* In APUs that are intended to be s2idle and system misconfigured
  the GPU will stay fully powered for the suspend.
* In systems that are intended to be s2idle, but AMD dGPU is also
  present, the dGPU will go through S3

Signed-off-by: Mario Limonciello <mario.limonciello at amd.com>
Reviewed-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
Signed-off-by: Sasha Levin <sashal at kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index 41677f99c67b1..f5852bda59349 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -1499,6 +1499,7 @@ static void amdgpu_drv_delayed_reset_work_handler(struct work_struct *work)
 static int amdgpu_pmops_prepare(struct device *dev)
 {
 	struct drm_device *drm_dev = dev_get_drvdata(dev);
+	struct amdgpu_device *adev = drm_to_adev(drm_dev);
 
 	/* Return a positive number here so
 	 * DPM_FLAG_SMART_SUSPEND works properly
@@ -1507,6 +1508,13 @@ static int amdgpu_pmops_prepare(struct device *dev)
 		return pm_runtime_suspended(dev) &&
 			pm_suspend_via_firmware();
 
+	/* if we will not support s3 or s2i for the device
+	 *  then skip suspend
+	 */
+	if (!amdgpu_acpi_is_s0ix_active(adev) &&
+	    !amdgpu_acpi_is_s3_active(adev))
+		return 1;
+
 	return 0;
 }
 
-- 
2.34.1