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Commit 401b58ce authored by Chunming Zhou's avatar Chunming Zhou Committed by Alex Deucher
Browse files

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: default avatarChunming Zhou <David1.Zhou@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent a960d61c

drivers/gpu/drm/amd/powerplay/smumgr/rv_smumgr.c

+23 −0
Original line number Diff line number Diff line
@@ -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;

}