Signed-off-by: Huang Rui <ray.huang at amd.com>
---
drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index 7347326..df4b1d3 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -1389,6 +1389,22 @@ static int sdma_v4_0_set_powergating_state(void *handle,
return 0;
}
+static void sdma_v4_0_get_clockgating_state(void *handle, u32 *flags)
+{
+ struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+ int data;
+
+ /* AMD_CG_SUPPORT_SDMA_MGCG */
+ data = RREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_CLK_CTRL));
+ if (!(data & SDMA0_CLK_CTRL__SOFT_OVERRIDE7_MASK))
+ *flags |= AMD_CG_SUPPORT_SDMA_MGCG;
+
+ /* AMD_CG_SUPPORT_SDMA_LS */
+ data = RREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_POWER_CNTL));
+ if (data & SDMA0_POWER_CNTL__MEM_POWER_OVERRIDE_MASK)
+ *flags |= AMD_CG_SUPPORT_SDMA_LS;
+}
+
const struct amd_ip_funcs sdma_v4_0_ip_funcs = {
.name = "sdma_v4_0",
.early_init = sdma_v4_0_early_init,
@@ -1404,6 +1420,7 @@ const struct amd_ip_funcs sdma_v4_0_ip_funcs = {
.soft_reset = sdma_v4_0_soft_reset,
.set_clockgating_state = sdma_v4_0_set_clockgating_state,
.set_powergating_state = sdma_v4_0_set_powergating_state,
+ .get_clockgating_state = sdma_v4_0_get_clockgating_state,
};
static const struct amdgpu_ring_funcs sdma_v4_0_ring_funcs = {
--
2.7.4
