diff options
| author | Chunming Zhou <David1.Zhou@amd.com> | 2017-03-10 09:48:09 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2017-05-25 00:41:53 +0300 |
| commit | 401b58ceb598aca618c8df4ce99cb2a7100aa39b (patch) | |
| tree | 0f864b39cf80d970eb3be9a2ae490e56fc4ee22c /drivers/gpu/drm/amd/powerplay | |
| parent | a960d61cbd62544c04adb4fe6513577601ff4535 (diff) | |
| download | linux-401b58ceb598aca618c8df4ce99cb2a7100aa39b.tar.xz | |
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>
Diffstat (limited to 'drivers/gpu/drm/amd/powerplay')
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c index 6b6b75538bc5..6c931baeeb15 100644 --- a/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c +++ b/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c @@ -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; } |