From: Chunming Zhou <David1.Zhou@xxxxxxx>
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 at amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang at amd.com>
Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c
index 6b6b755..6c931ba 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;
}
--
2.5.5
