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drm/amdgpu/swm14: Update power limit logic

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Take into account the limits from the vbios.  Ported
from the SMU13 code.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/4352
Reviewed-by: Jesse Zhang <Jesse.Zhang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher
2025-08-08 13:12:07 -04:00
parent 8a358aaa5d
commit 54f7f3ca98
1 changed files with 25 additions and 5 deletions
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30
drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c
View File

@@ -1697,9 +1697,11 @@ static int smu_v14_0_2_get_power_limit(struct smu_context *smu,
uint32_t *min_power_limit)
{
struct smu_table_context *table_context = &smu->smu_table;
struct smu_14_0_2_powerplay_table *powerplay_table =
table_context->power_play_table;
PPTable_t *pptable = table_context->driver_pptable;
CustomSkuTable_t *skutable = &pptable->CustomSkuTable;
uint32_t power_limit;
uint32_t power_limit, od_percent_upper = 0, od_percent_lower = 0;
uint32_t msg_limit = pptable->SkuTable.MsgLimits.Power[PPT_THROTTLER_PPT0][POWER_SOURCE_AC];
if (smu_v14_0_get_current_power_limit(smu, &power_limit))
@@ -1712,11 +1714,29 @@ static int smu_v14_0_2_get_power_limit(struct smu_context *smu,
if (default_power_limit)
*default_power_limit = power_limit;
if (max_power_limit)
*max_power_limit = msg_limit;
if (powerplay_table) {
if (smu->od_enabled &&
smu_v14_0_2_is_od_feature_supported(smu, PP_OD_FEATURE_PPT_BIT)) {
od_percent_upper = pptable->SkuTable.OverDriveLimitsBasicMax.Ppt;
od_percent_lower = pptable->SkuTable.OverDriveLimitsBasicMin.Ppt;
} else if (smu_v14_0_2_is_od_feature_supported(smu, PP_OD_FEATURE_PPT_BIT)) {
od_percent_upper = 0;
od_percent_lower = pptable->SkuTable.OverDriveLimitsBasicMin.Ppt;
}
}
if (min_power_limit)
*min_power_limit = 0;
dev_dbg(smu->adev->dev, "od percent upper:%d, od percent lower:%d (default power: %d)\n",
od_percent_upper, od_percent_lower, power_limit);
if (max_power_limit) {
*max_power_limit = msg_limit * (100 + od_percent_upper);
*max_power_limit /= 100;
}
if (min_power_limit) {
*min_power_limit = power_limit * (100 + od_percent_lower);
*min_power_limit /= 100;
}
return 0;
}