Commit 25319ae8 authored by Rex Zhu's avatar Rex Zhu Committed by Greg Kroah-Hartman

drm/amd/powerplay: refine vce dpm update code on Cz.


[ Upstream commit ab8db87b ]

Program HardMin based on the vce_arbiter.ecclk
if ecclk is 0, disable ECLK DPM 0. Otherwise VCE
could hang if switching SCLK from DPM 0 to 6/7
Signed-off-by: default avatarRex Zhu <Rex.Zhu@amd.com>
Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f275ac7f
......@@ -1402,14 +1402,22 @@ int cz_dpm_update_vce_dpm(struct pp_hwmgr *hwmgr)
cz_hwmgr->vce_dpm.hard_min_clk,
PPSMC_MSG_SetEclkHardMin));
} else {
/*EPR# 419220 -HW limitation to to */
cz_hwmgr->vce_dpm.hard_min_clk = hwmgr->vce_arbiter.ecclk;
smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
PPSMC_MSG_SetEclkHardMin,
cz_get_eclk_level(hwmgr,
cz_hwmgr->vce_dpm.hard_min_clk,
PPSMC_MSG_SetEclkHardMin));
/*Program HardMin based on the vce_arbiter.ecclk */
if (hwmgr->vce_arbiter.ecclk == 0) {
smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
PPSMC_MSG_SetEclkHardMin, 0);
/* disable ECLK DPM 0. Otherwise VCE could hang if
* switching SCLK from DPM 0 to 6/7 */
smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
PPSMC_MSG_SetEclkSoftMin, 1);
} else {
cz_hwmgr->vce_dpm.hard_min_clk = hwmgr->vce_arbiter.ecclk;
smum_send_msg_to_smc_with_parameter(hwmgr->smumgr,
PPSMC_MSG_SetEclkHardMin,
cz_get_eclk_level(hwmgr,
cz_hwmgr->vce_dpm.hard_min_clk,
PPSMC_MSG_SetEclkHardMin));
}
}
return 0;
}
......
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