drm/radeon: add support for ASPM on evergreen asics

Enables PCIE ASPM (Active State Power Management) on
evergreen-cayman asics.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
index ad65143232c0..cafc3bd78a38 100644
--- a/drivers/gpu/drm/radeon/ni.c
+++ b/drivers/gpu/drm/radeon/ni.c
@@ -173,6 +173,7 @@ extern void evergreen_irq_suspend(struct radeon_device *rdev);
 extern int evergreen_mc_init(struct radeon_device *rdev);
 extern void evergreen_fix_pci_max_read_req_size(struct radeon_device *rdev);
 extern void evergreen_pcie_gen2_enable(struct radeon_device *rdev);
+extern void evergreen_program_aspm(struct radeon_device *rdev);
 extern void sumo_rlc_fini(struct radeon_device *rdev);
 extern int sumo_rlc_init(struct radeon_device *rdev);
 
@@ -2076,6 +2077,8 @@ static int cayman_startup(struct radeon_device *rdev)
 
         /* enable pcie gen2 link */
         evergreen_pcie_gen2_enable(rdev);
+        /* enable aspm */
+        evergreen_program_aspm(rdev);
 
         if (rdev->flags & RADEON_IS_IGP) {
                 if (!rdev->me_fw || !rdev->pfp_fw || !rdev->rlc_fw) {