diff options
| author | Huang Rui <ray.huang@amd.com> | 2017-01-05 15:48:06 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-01-27 19:13:09 +0300 |
| commit | abd2c2fe1212698ed326d5746e487abecb2ed325 (patch) | |
| tree | 1c4cc02c0fb456a86c5758a58557f67ae7f5779e /drivers/gpu/drm/amd | |
| parent | 41c360f6a6ccd477481a3309608e9b3388bdd83d (diff) | |
| download | linux-abd2c2fe1212698ed326d5746e487abecb2ed325.tar.xz | |
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>
Diffstat (limited to 'drivers/gpu/drm/amd')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/vi.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c index 0e1b2fd5cf38..45b7edd2c969 100644 --- a/drivers/gpu/drm/amd/amdgpu/vi.c +++ b/drivers/gpu/drm/amd/amdgpu/vi.c @@ -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 = |