add amdgpu_acpi_is_s0ix_supported() to check the platform
whether support s0i3.
v2: fix empty function parameters warning (void)
Signed-off-by: Prike Liang <Prike.Liang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
void amdgpu_acpi_get_backlight_caps(struct amdgpu_device *adev,
struct amdgpu_dm_backlight_caps *caps);
+bool amdgpu_acpi_is_s0ix_supported(void);
#else
static inline int amdgpu_acpi_init(struct amdgpu_device *adev) { return 0; }
static inline void amdgpu_acpi_fini(struct amdgpu_device *adev) { }
+static inline bool amdgpu_acpi_is_s0ix_supported(void) { return false; }
#endif
int amdgpu_cs_find_mapping(struct amdgpu_cs_parser *parser,
#include <linux/power_supply.h>
#include <linux/pm_runtime.h>
#include <acpi/video.h>
+#include <acpi/actbl.h>
#include <drm/drm_crtc_helper.h>
#include "amdgpu.h"
unregister_acpi_notifier(&adev->acpi_nb);
kfree(adev->atif);
}
+
+/**
+ * amdgpu_acpi_is_s0ix_supported
+ *
+ * returns true if supported, false if not.
+ */
+bool amdgpu_acpi_is_s0ix_supported(void)
+{
+ if (acpi_gbl_FADT.flags & ACPI_FADT_LOW_POWER_S0)
+ return true;
+
+ return false;
+}