drm/radeon: add a module parameter to disable aspm
Can cause hangs when enabled in certain motherboards.
Set radeon.aspm=0 to disable aspm.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c
index d914e04..2d34792 100644
--- a/drivers/gpu/drm/radeon/rv770_dpm.c
+++ b/drivers/gpu/drm/radeon/rv770_dpm.c
@@ -2099,12 +2099,14 @@
rv770_enable_acpi_pm(rdev);
- if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L0s)
- rv770_enable_l0s(rdev);
- if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L1)
- rv770_enable_l1(rdev);
- if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_TURNOFFPLL_ASPML1)
- rv770_enable_pll_sleep_in_l1(rdev);
+ if (radeon_aspm != 0) {
+ if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L0s)
+ rv770_enable_l0s(rdev);
+ if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_ASPM_L1)
+ rv770_enable_l1(rdev);
+ if (rdev->pm.dpm.platform_caps & ATOM_PP_PLATFORM_CAP_TURNOFFPLL_ASPML1)
+ rv770_enable_pll_sleep_in_l1(rdev);
+ }
}
void rv770_dpm_display_configuration_changed(struct radeon_device *rdev)