diff options
| author | Evan Quan <evan.quan@amd.com> | 2019-06-27 11:01:04 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-10 09:53:43 +0200 |
| commit | ec6d8c9e6687868dfd58994b2ea1758fe60f2733 (patch) | |
| tree | b06361cc90a76af5f109ae584b9a1f9b637646d6 | |
| parent | b6d56f4f6a491d80169c666b64953d8395b47b4b (diff) | |
| download | linux-stable-ec6d8c9e6687868dfd58994b2ea1758fe60f2733.tar.gz | |
drm/amd/powerplay: use hardware fan control if no powerplay fan table
commit f78c581e22d4b33359ac3462e8d0504735df01f4 upstream.
Otherwise, you may get divided-by-zero error or corrput the SMU fan
control feature.
Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Tested-by: Slava Abramov <slava.abramov@amd.com>
Acked-by: Slava Abramov <slava.abramov@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/hwmgr/process_pptables_v1_0.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/inc/hwmgr.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c | 4 |
3 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/process_pptables_v1_0.c b/drivers/gpu/drm/amd/powerplay/hwmgr/process_pptables_v1_0.c index 4e1fd53938458e..fbbd5a4877e9ab 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/process_pptables_v1_0.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/process_pptables_v1_0.c @@ -916,8 +916,10 @@ static int init_thermal_controller( PHM_PlatformCaps_ThermalController ); - if (0 == powerplay_table->usFanTableOffset) + if (0 == powerplay_table->usFanTableOffset) { + hwmgr->thermal_controller.use_hw_fan_control = 1; return 0; + } fan_table = (const PPTable_Generic_SubTable_Header *) (((unsigned long)powerplay_table) + diff --git a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h index d3d96260f44067..6ee864455a12ab 100644 --- a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h +++ b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h @@ -677,6 +677,7 @@ struct pp_thermal_controller_info { uint8_t ucType; uint8_t ucI2cLine; uint8_t ucI2cAddress; + uint8_t use_hw_fan_control; struct pp_fan_info fanInfo; struct pp_advance_fan_control_parameters advanceFanControlParameters; }; diff --git a/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c b/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c index 45629f26dbc23e..0dbca38658514c 100644 --- a/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c +++ b/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c @@ -2038,6 +2038,10 @@ static int polaris10_thermal_setup_fan_table(struct pp_hwmgr *hwmgr) return 0; } + /* use hardware fan control */ + if (hwmgr->thermal_controller.use_hw_fan_control) + return 0; + tmp64 = hwmgr->thermal_controller.advanceFanControlParameters. usPWMMin * duty100; do_div(tmp64, 10000); |