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drm/amdgpu: add get clockgating_state method for vi common 

Signed-off-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Huang Rui 2017-01-05 20:48:06 +08:00 committed by Alex Deucher
parent 41c360f6a6
commit abd2c2fe12
1 changed files with 27 additions and 0 deletions
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27
drivers/gpu/drm/amd/amdgpu/vi.c
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@ -1369,6 +1369,32 @@ static int vi_common_set_powergating_state(void *handle,
return 0;
}
static void vi_common_get_clockgating_state(void *handle, u32 *flags)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
int data;
/* AMD_CG_SUPPORT_BIF_LS */
data = RREG32_PCIE(ixPCIE_CNTL2);
if (data & PCIE_CNTL2__SLV_MEM_LS_EN_MASK)
*flags |= AMD_CG_SUPPORT_BIF_LS;
/* AMD_CG_SUPPORT_HDP_LS */
data = RREG32(mmHDP_MEM_POWER_LS);
if (data & HDP_MEM_POWER_LS__LS_ENABLE_MASK)
*flags |= AMD_CG_SUPPORT_HDP_LS;
/* AMD_CG_SUPPORT_HDP_MGCG */
data = RREG32(mmHDP_HOST_PATH_CNTL);
if (!(data & HDP_HOST_PATH_CNTL__CLOCK_GATING_DIS_MASK))
*flags |= AMD_CG_SUPPORT_HDP_MGCG;
/* AMD_CG_SUPPORT_ROM_MGCG */
data = RREG32_SMC(ixCGTT_ROM_CLK_CTRL0);
if (!(data & CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK))
*flags |= AMD_CG_SUPPORT_ROM_MGCG;
}
static const struct amd_ip_funcs vi_common_ip_funcs = {
.name = "vi_common",
.early_init = vi_common_early_init,
@ -1384,6 +1410,7 @@ static const struct amd_ip_funcs vi_common_ip_funcs = {
.soft_reset = vi_common_soft_reset,
.set_clockgating_state = vi_common_set_clockgating_state,
.set_powergating_state = vi_common_set_powergating_state,
.get_clockgating_state = vi_common_get_clockgating_state,
};
static const struct amdgpu_ip_block_version vi_common_ip_block =