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drm/amd/powerplay: disable UVD SMU handshake for MCLK. 

sync up with internal programming recommendations.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Rex Zhu 2016-06-08 19:41:00 +08:00 committed by Alex Deucher
parent a2fb4934e9
commit 40787ef21c
1 changed files with 9 additions and 0 deletions
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9
drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_hwmgr.c
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@ -2252,6 +2252,9 @@ static int polaris10_enable_deep_sleep_master_switch(struct pp_hwmgr *hwmgr)
static int polaris10_enable_sclk_mclk_dpm(struct pp_hwmgr *hwmgr)
{
struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend);
uint32_t soft_register_value = 0;
uint32_t handshake_disables_offset = data->soft_regs_start
+ offsetof(SMU74_SoftRegisters, HandshakeDisables);
/* enable SCLK dpm */
if (!data->sclk_dpm_key_disabled)
@ -2262,6 +2265,12 @@ static int polaris10_enable_sclk_mclk_dpm(struct pp_hwmgr *hwmgr)
/* enable MCLK dpm */
if (0 == data->mclk_dpm_key_disabled) {
/* Disable UVD - SMU handshake for MCLK. */
soft_register_value = cgs_read_ind_register(hwmgr->device,
CGS_IND_REG__SMC, handshake_disables_offset);
soft_register_value |= SMU7_UVD_MCLK_HANDSHAKE_DISABLE;
cgs_write_ind_register(hwmgr->device, CGS_IND_REG__SMC,
handshake_disables_offset, soft_register_value);
PP_ASSERT_WITH_CODE(
(0 == smum_send_msg_to_smc(hwmgr->smumgr,