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drm/amd/powerplay/rv: power up/down sdma via the SMU 

sdma is powered down by default in vbios,
need to power up in driver init.  Power it down
again on driver tear down.

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Chunming Zhou 2017-03-10 14:48:09 +08:00 committed by Alex Deucher
parent a960d61cbd
commit 401b58ceb5
1 changed files with 23 additions and 0 deletions
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23
drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c
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@ -243,6 +243,26 @@ static int rv_verify_smc_interface(struct pp_smumgr *smumgr)
return 0;
}
/* sdma is disabled by default in vbios, need to re-enable in driver */
static int rv_smc_enable_sdma(struct pp_smumgr *smumgr)
{
PP_ASSERT_WITH_CODE(!rv_send_msg_to_smc(smumgr,
PPSMC_MSG_PowerUpSdma),
"Attempt to power up sdma Failed!",
return -EINVAL);
return 0;
}
static int rv_smc_disable_sdma(struct pp_smumgr *smumgr)
{
PP_ASSERT_WITH_CODE(!rv_send_msg_to_smc(smumgr,
PPSMC_MSG_PowerDownSdma),
"Attempt to power down sdma Failed!",
return -EINVAL);
return 0;
}
static int rv_smu_fini(struct pp_smumgr *smumgr)
{
@ -250,6 +270,7 @@ static int rv_smu_fini(struct pp_smumgr *smumgr)
(struct rv_smumgr *)(smumgr->backend);
if (priv) {
rv_smc_disable_sdma(smumgr);
cgs_free_gpu_mem(smumgr->device,
priv->smu_tables.entry[WMTABLE].handle);
cgs_free_gpu_mem(smumgr->device,
@ -265,6 +286,8 @@ static int rv_start_smu(struct pp_smumgr *smumgr)
{
if (rv_verify_smc_interface(smumgr))
return -EINVAL;
if (rv_smc_enable_sdma(smumgr))
return -EINVAL;
return 0;
}