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drm/amd/pm: do not use ixFEATURE_STATUS for checking smc running

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[ Upstream commit 786436b453 ]

This reverts commit f878122841 ("drm/amdgpu:
Fix bug where DPM is not enabled after hibernate and resume").
It was intended to fix Hawaii S4(hibernation) issue but break S3. As
ixFEATURE_STATUS is filled with garbage data on resume which can be
only cleared by reloading smc firmware(but that will involve many
changes). So, we will revert this S4 fix and seek a new way.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Tested-by: Sandeep Raghuraman <sandy.8925@gmail.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Evan Quan
2020-10-27 10:24:18 +08:00
committed by Greg Kroah-Hartman
parent 48083640a4
commit c1cbb64c10
1 changed files with 1 additions and 4 deletions
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5
drivers/gpu/drm/amd/powerplay/smumgr/ci_smumgr.c
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@@ -2725,10 +2725,7 @@ static int ci_initialize_mc_reg_table(struct pp_hwmgr *hwmgr)
static bool ci_is_dpm_running(struct pp_hwmgr *hwmgr)
{
return (1 == PHM_READ_INDIRECT_FIELD(hwmgr->device,
CGS_IND_REG__SMC, FEATURE_STATUS,
VOLTAGE_CONTROLLER_ON))
? true : false;
return ci_is_smc_ram_running(hwmgr);
}
static int ci_smu_init(struct pp_hwmgr *hwmgr)