diff options
| author | Huang Rui <ray.huang@amd.com> | 2017-03-24 11:52:23 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-03-29 23:55:21 -0400 |
| commit | e2a4cd69a57de8c229f4de577739cde63f3dde0d (patch) | |
| tree | de4ceab3a96834a1f9ed7c6959bae0d7bc6efc9c /drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c | |
| parent | drm/amdgpu: add get_clockgating for sdma v4 (diff) | |
| download | linux-e2a4cd69a57de8c229f4de577739cde63f3dde0d.tar.gz linux-e2a4cd69a57de8c229f4de577739cde63f3dde0d.zip | |
drm/amdgpu: add get_clockgating callback for mmhub v1
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>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c index b1e0e6b796b8..7c2075a2c243 100644 --- a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c +++ b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c @@ -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 = |