[PATCH] drm/amdgpu: check whether s2idle is enabled to determine s0ix

[Alex Deucher]

For legacy S3, we need to use different handling in the driver.
Suggested by Heiko Przybyl.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1553
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
index 2e9b16fb3fcd..b64c002b9aa3 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c
@@ -26,6 +26,7 @@
 #include <linux/slab.h>
 #include <linux/power_supply.h>
 #include <linux/pm_runtime.h>
+#include <linux/suspend.h>
 #include <acpi/video.h>
 #include <acpi/actbl.h>
 
@@ -906,7 +907,7 @@ bool amdgpu_acpi_is_s0ix_supported(struct amdgpu_device *adev)
 #if defined(CONFIG_AMD_PMC) || defined(CONFIG_AMD_PMC_MODULE)
 	if (acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0) {
 		if (adev->flags & AMD_IS_APU)
-			return true;
+			return pm_suspend_default_s2idle();
 	}
 #endif
 	return false;
-- 
2.30.2