From: Huang Rui Date: Fri, 24 Mar 2017 03:52:23 +0000 (+0800) Subject: drm/amdgpu: add get_clockgating callback for mmhub v1 X-Git-Tag: v4.12~21^2~26^2~57 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e2a4cd69a57de8c229f4de577739cde63f3dde0d;p=platform%2Fkernel%2Flinux-exynos.git drm/amdgpu: add get_clockgating callback for mmhub v1 Signed-off-by: Huang Rui Reviewed-by: Alex Deucher Reviewed-by: Edward O'Callaghan Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c b/drivers/gpu/drm/amd/amdgpu/mmhub_v1_0.c index b1e0e6b..7c2075a2 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 =