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drm/amdgpu: add get_clockgating callback for soc15 (v3) 

v2: squash register typo fix from Ray
v3: fix spelling

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 10:46:16 +08:00 committed by Alex Deucher
parent e96487a6a7
commit f9abe35c30
2 changed files with 40 additions and 0 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
View File

@ -55,7 +55,10 @@ static const struct cg_flag_name clocks[] = {
{AMD_CG_SUPPORT_VCE_MGCG, "Video Compression Engine Medium Grain Clock Gating"},
{AMD_CG_SUPPORT_HDP_LS, "Host Data Path Light Sleep"},
{AMD_CG_SUPPORT_HDP_MGCG, "Host Data Path Medium Grain Clock Gating"},
{AMD_CG_SUPPORT_DRM_MGCG, "Digital Right Management Medium Grain Clock Gating"},
{AMD_CG_SUPPORT_DRM_LS, "Digital Right Management Light Sleep"},
{AMD_CG_SUPPORT_ROM_MGCG, "Rom Medium Grain Clock Gating"},
{AMD_CG_SUPPORT_DF_MGCG, "Data Fabric Medium Grain Clock Gating"},
{0, NULL},
};

37
drivers/gpu/drm/amd/amdgpu/soc15.c
View File

@ -792,6 +792,42 @@ static int soc15_common_set_clockgating_state(void *handle,
return 0;
}
static void soc15_common_get_clockgating_state(void *handle, u32 *flags)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
int data;
if (amdgpu_sriov_vf(adev))
*flags = 0;
nbio_v6_1_get_clockgating_state(adev, flags);
/* AMD_CG_SUPPORT_HDP_LS */
data = RREG32(SOC15_REG_OFFSET(HDP, 0, mmHDP_MEM_POWER_LS));
if (data & HDP_MEM_POWER_LS__LS_ENABLE_MASK)
*flags |= AMD_CG_SUPPORT_HDP_LS;
/* AMD_CG_SUPPORT_DRM_MGCG */
data = RREG32(SOC15_REG_OFFSET(MP0, 0, mmMP0_MISC_CGTT_CTRL0));
if (!(data & 0x01000000))
*flags |= AMD_CG_SUPPORT_DRM_MGCG;
/* AMD_CG_SUPPORT_DRM_LS */
data = RREG32(SOC15_REG_OFFSET(MP0, 0, mmMP0_MISC_LIGHT_SLEEP_CTRL));
if (data & 0x1)
*flags |= AMD_CG_SUPPORT_DRM_LS;
/* AMD_CG_SUPPORT_ROM_MGCG */
data = RREG32(SOC15_REG_OFFSET(SMUIO, 0, mmCGTT_ROM_CLK_CTRL0));
if (!(data & CGTT_ROM_CLK_CTRL0__SOFT_OVERRIDE0_MASK))
*flags |= AMD_CG_SUPPORT_ROM_MGCG;
/* AMD_CG_SUPPORT_DF_MGCG */
data = RREG32(SOC15_REG_OFFSET(DF, 0, mmDF_PIE_AON0_DfGlobalClkGater));
if (data & DF_MGCG_ENABLE_15_CYCLE_DELAY)
*flags |= AMD_CG_SUPPORT_DF_MGCG;
}
static int soc15_common_set_powergating_state(void *handle,
enum amd_powergating_state state)
{
@ -814,4 +850,5 @@ const struct amd_ip_funcs soc15_common_ip_funcs = {
.soft_reset = soc15_common_soft_reset,
.set_clockgating_state = soc15_common_set_clockgating_state,
.set_powergating_state = soc15_common_set_powergating_state,
.get_clockgating_state= soc15_common_get_clockgating_state,
};