Signed-off-by: Huang Rui <ray.huang at amd.com>
---
drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c
index b1e0e6b..68e5f7a 100644
--- a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c
@@ -552,6 +552,22 @@ static int mmhub_v1_0_set_clockgating_state(void *handle,
return 0;
}
+static void mmhub_v1_0_get_clockgating_state(void *handle, u32 *flags)
+{
+ struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ int data;
+
+ /* AMD_CG_SUPPORT_MC_MGCG */
+ data = RREG32(SOC15_REG_OFFSET(ATHUB, 0, mmATHUB_MISC_CNTL));
+ if (data & ATHUB_MISC_CNTL__CG_ENABLE_MASK)
+ *flags |= AMD_CG_SUPPORT_MC_MGCG;
+
+ /* AMD_CG_SUPPORT_MC_LS */
+ data = RREG32(SOC15_REG_OFFSET(MMHUB, 0, mmATC_L2_MISC_CG));
+ if (data & ATC_L2_MISC_CG__MEM_LS_ENABLE_MASK)
+ *flags |= AMD_CG_SUPPORT_MC_LS;
+}
+
static int mmhub_v1_0_set_powergating_state(void *handle,
enum amd_powergating_state state)
{
@@ -573,6 +589,7 @@ const struct amd_ip_funcs mmhub_v1_0_ip_funcs = {
.soft_reset = mmhub_v1_0_soft_reset,
.set_clockgating_state = mmhub_v1_0_set_clockgating_state,
.set_powergating_state = mmhub_v1_0_set_powergating_state,
+ .get_clockgating_state = mmhub_v1_0_get_clockgating_state,
};
const struct amdgpu_ip_block_version mmhub_v1_0_ip_block =
--
2.7.4
