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drm/amdgpu: add get_clockgating callback for mmhub v1

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Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Edward O'Callaghan <funfunctor@folklore1984.net>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Huang Rui 2017-03-24 11:52:23 +08:00 committed by Alex Deucher
parent 2eba890cb8
commit e2a4cd69a5
1 changed files with 20 additions and 0 deletions
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20
drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c
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@ -552,6 +552,25 @@ 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;
if (amdgpu_sriov_vf(adev))
*flags = 0;
/* 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 +592,7 @@ 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 =