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drm/amd/pm: disable OD_FAN_CURVE if temp or pwm range invalid for smu v14

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Forcibly disable the OD_FAN_CURVE feature when temperature or PWM range is invalid,
otherwise PMFW will reject this configuration on smu v14.0.2/14.0.3.

example:
$ sudo cat /sys/bus/pci/devices/<BDF>/gpu_od/fan_ctrl/fan_curve

OD_FAN_CURVE:
0: 0C 0%
1: 0C 0%
2: 0C 0%
3: 0C 0%
4: 0C 0%
OD_RANGE:
FAN_CURVE(hotspot temp): 0C 0C
FAN_CURVE(fan speed): 0% 0%

$ echo "0 50 40" | sudo tee fan_curve

kernel log:
[  969.761627] amdgpu 0000:03:00.0: amdgpu: Fan curve temp setting(50) must be within [0, 0]!
[ 1010.897800] amdgpu 0000:03:00.0: amdgpu: Fan curve temp setting(50) must be within [0, 0]!

Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Yang Wang
2026-03-19 03:36:50 -04:00
committed by Alex Deucher
parent 19d4149b22
commit ab4905d466
1 changed files with 32 additions and 1 deletions
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33
drivers/gpu/drm/amd/pm/swsmu/smu14/smu_v14_0_2_ppt.c
View File

@@ -56,6 +56,10 @@
#define to_amdgpu_device(x) (container_of(x, struct amdgpu_device, pm.smu_i2c))
static void smu_v14_0_2_get_od_setting_limits(struct smu_context *smu,
int od_feature_bit,
int32_t *min, int32_t *max);
static const struct smu_feature_bits smu_v14_0_2_dpm_features = {
.bits = { SMU_FEATURE_BIT_INIT(FEATURE_DPM_GFXCLK_BIT),
SMU_FEATURE_BIT_INIT(FEATURE_DPM_UCLK_BIT),
@@ -922,8 +926,35 @@ static bool smu_v14_0_2_is_od_feature_supported(struct smu_context *smu,
PPTable_t *pptable = smu->smu_table.driver_pptable;
const OverDriveLimits_t * const overdrive_upperlimits =
&pptable->SkuTable.OverDriveLimitsBasicMax;
int32_t min_value, max_value;
bool feature_enabled;
return overdrive_upperlimits->FeatureCtrlMask & (1U << od_feature_bit);
switch (od_feature_bit) {
case PP_OD_FEATURE_FAN_CURVE_BIT:
feature_enabled = !!(overdrive_upperlimits->FeatureCtrlMask & (1U << od_feature_bit));
if (feature_enabled) {
smu_v14_0_2_get_od_setting_limits(smu, PP_OD_FEATURE_FAN_CURVE_TEMP,
&min_value, &max_value);
if (!min_value && !max_value) {
feature_enabled = false;
goto out;
}
smu_v14_0_2_get_od_setting_limits(smu, PP_OD_FEATURE_FAN_CURVE_PWM,
&min_value, &max_value);
if (!min_value && !max_value) {
feature_enabled = false;
goto out;
}
}
break;
default:
feature_enabled = !!(overdrive_upperlimits->FeatureCtrlMask & (1U << od_feature_bit));
break;
}
out:
return feature_enabled;
}
static void smu_v14_0_2_get_od_setting_limits(struct smu_context *smu,