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drm/amdgpu: add get clockgating_state method for gmc v8 

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 20:03:27 +08:00 committed by Alex Deucher
parent ebd843d6ee
commit 8bcab092f8
1 changed files with 16 additions and 0 deletions
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16
drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
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@ -1439,6 +1439,21 @@ static int gmc_v8_0_set_powergating_state(void *handle,
return 0;
}
static void gmc_v8_0_get_clockgating_state(void *handle, u32 *flags)
{
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
int data;
/* AMD_CG_SUPPORT_MC_MGCG */
data = RREG32(mmMC_HUB_MISC_HUB_CG);
if (data & MC_HUB_MISC_HUB_CG__ENABLE_MASK)
*flags |= AMD_CG_SUPPORT_MC_MGCG;
/* AMD_CG_SUPPORT_MC_LS */
if (data & MC_HUB_MISC_HUB_CG__MEM_LS_ENABLE_MASK)
*flags |= AMD_CG_SUPPORT_MC_LS;
}
static const struct amd_ip_funcs gmc_v8_0_ip_funcs = {
.name = "gmc_v8_0",
.early_init = gmc_v8_0_early_init,
@ -1457,6 +1472,7 @@ static const struct amd_ip_funcs gmc_v8_0_ip_funcs = {
.post_soft_reset = gmc_v8_0_post_soft_reset,
.set_clockgating_state = gmc_v8_0_set_clockgating_state,
.set_powergating_state = gmc_v8_0_set_powergating_state,
.get_clockgating_state = gmc_v8_0_get_clockgating_state,
};
static const struct amdgpu_gart_funcs gmc_v8_0_gart_funcs = {