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drm/amd/pm: Fix power limit query on aldebaran

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Aldebaran doesn't have AC/DC power limits. Separate the implementation
from SMU13. Max power limit is queried from PPTable.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Kevin Wang <kevin1.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar 2021-01-28 18:20:06 +08:00 committed by Alex Deucher
parent 4ac5617c4b
commit d6f19a9949
1 changed files with 13 additions and 15 deletions
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28
drivers/gpu/drm/amd/pm/swsmu/smu13/aldebaran_ppt.c
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@ -1066,30 +1066,28 @@ static int aldebaran_read_sensor(struct smu_context *smu,
static int aldebaran_get_power_limit(struct smu_context *smu)
{
struct smu_13_0_powerplay_table *powerplay_table =
(struct smu_13_0_powerplay_table *)smu->smu_table.power_play_table;
PPTable_t *pptable = smu->smu_table.driver_pptable;
uint32_t power_limit, od_percent;
uint32_t power_limit = 0;
int ret;
if (smu_v13_0_get_current_power_limit(smu, &power_limit)) {
if (!smu_cmn_feature_is_enabled(smu, SMU_FEATURE_PPT_BIT))
return -EINVAL;
ret = smu_cmn_send_smc_msg(smu, SMU_MSG_GetPptLimit, &power_limit);
if (!ret) {
/* the last hope to figure out the ppt limit */
if (!pptable) {
dev_err(smu->adev->dev, "Cannot get PPT limit due to pptable missing!");
return -EINVAL;
}
power_limit = pptable->PptLimit;
}
smu->current_power_limit = power_limit;
if (smu->od_enabled) {
od_percent = le32_to_cpu(powerplay_table->overdrive_table.max[SMU_13_0_ODSETTING_POWERPERCENTAGE]);
dev_dbg(smu->adev->dev, "ODSETTING_POWERPERCENTAGE: %d (default: %d)\n", od_percent, power_limit);
power_limit *= (100 + od_percent);
power_limit /= 100;
}
smu->max_power_limit = power_limit;
if (pptable)
smu->max_power_limit = pptable->PptLimit;
return 0;
}