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drm/amd/pm: Disable fan control if not supported

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On arcturus, not all platforms use PMFW based fan control. On such
ASICs fan control by PMFW will be disabled in PPTable. Disable hwmon
knobs for fan control also as it is not possible to report or control
fan speed on such platforms through driver.

Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Lijo Lazar 2021-10-22 15:35:25 +08:00 committed by Alex Deucher
parent df9feb1a69
commit 47b67c9900
1 changed files with 14 additions and 0 deletions
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14
drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c
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@ -436,6 +436,19 @@ static void arcturus_check_bxco_support(struct smu_context *smu)
}
}
static void arcturus_check_fan_support(struct smu_context *smu)
{
struct smu_table_context *table_context = &smu->smu_table;
PPTable_t *pptable = table_context->driver_pptable;
/* No sort of fan control possible if PPTable has it disabled */
smu->adev->pm.no_fan =
!(pptable->FeaturesToRun[0] & FEATURE_FAN_CONTROL_MASK);
if (smu->adev->pm.no_fan)
dev_info_once(smu->adev->dev,
"PMFW based fan control disabled");
}
static int arcturus_check_powerplay_table(struct smu_context *smu)
{
struct smu_table_context *table_context = &smu->smu_table;
@ -443,6 +456,7 @@ static int arcturus_check_powerplay_table(struct smu_context *smu)
table_context->power_play_table;
arcturus_check_bxco_support(smu);
arcturus_check_fan_support(smu);
table_context->thermal_controller_type =
powerplay_table->thermal_controller_type;