Signed-off-by: Huang Rui <ray.huang at amd.com>
---
drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index 2f36417..6f46562 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -1496,6 +1496,21 @@ static int gmc_v8_0_set_powergating_state(void *handle,
return 0;
}
+static void gmc_v8_0_clockgating_state(void *handle, u32 *flags)
+{
+ struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ int data;
+
+ /* AMD_CG_SUPPORT_MC_MGCG */
+ data = RREG32(mmMC_HUB_MISC_HUB_CG);
+ if (data & MC_HUB_MISC_HUB_CG__ENABLE_MASK)
+ *flags |= AMD_CG_SUPPORT_MC_MGCG;
+
+ /* AMD_CG_SUPPORT_MC_LS */
+ if (data & MC_HUB_MISC_HUB_CG__MEM_LS_ENABLE_MASK)
+ *flags |= AMD_CG_SUPPORT_MC_LS;
+}
+
static const struct amd_ip_funcs gmc_v8_0_ip_funcs = {
.name = "gmc_v8_0",
.early_init = gmc_v8_0_early_init,
@@ -1514,6 +1529,7 @@ static const struct amd_ip_funcs gmc_v8_0_ip_funcs = {
.post_soft_reset = gmc_v8_0_post_soft_reset,
.set_clockgating_state = gmc_v8_0_set_clockgating_state,
.set_powergating_state = gmc_v8_0_set_powergating_state,
+ .clockgating_state = gmc_v8_0_clockgating_state,
};
static const struct amdgpu_gart_funcs gmc_v8_0_gart_funcs = {
--
2.7.4
