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drm/amdgpu: add drm light sleep support for Vi 

v2: fix copy error.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rex Zhu 2016-12-08 10:58:15 +08:00 committed by Alex Deucher
parent e8a95b274d
commit f6f534e2af
1 changed files with 19 additions and 0 deletions
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19
drivers/gpu/drm/amd/amdgpu/vi.c
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@ -1177,6 +1177,23 @@ static void vi_update_hdp_light_sleep(struct amdgpu_device *adev,
WREG32(mmHDP_MEM_POWER_LS, data);
}
static void vi_update_drm_light_sleep(struct amdgpu_device *adev,
bool enable)
{
uint32_t temp, data;
temp = data = RREG32(0x157a);
if (enable && (adev->cg_flags & AMD_CG_SUPPORT_DRM_LS))
data |= 1;
else
data &= ~1;
if (temp != data)
WREG32(0x157a, data);
}
static void vi_update_rom_medium_grain_clock_gating(struct amdgpu_device *adev,
bool enable)
{
@ -1337,6 +1354,8 @@ static int vi_common_set_clockgating_state(void *handle,
state == AMD_CG_STATE_GATE ? true : false);
vi_update_hdp_light_sleep(adev,
state == AMD_CG_STATE_GATE ? true : false);
vi_update_drm_light_sleep(adev,
state == AMD_CG_STATE_GATE ? true : false);
break;
case CHIP_TONGA:
case CHIP_POLARIS10: