From 47b67c9900db0db41e7a678bc0b2fc54983b6cb9 Mon Sep 17 00:00:00 2001 From: Lijo Lazar Date: Fri, 22 Oct 2021 15:35:25 +0800 Subject: [PATCH] drm/amd/pm: Disable fan control if not supported 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 Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c index 082f01893f3d1..fd1d30a93db52 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/arcturus_ppt.c @@ -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;