summaryrefslogtreecommitdiff
path: root/drivers
diff options
context:
space:
mode:
authorEvan Quan <evan.quan@amd.com>2019-06-27 06:01:04 +0300
committerAlex Deucher <alexander.deucher@amd.com>2019-07-01 17:14:05 +0300
commitf78c581e22d4b33359ac3462e8d0504735df01f4 (patch)
tree8209d75bb22154f68b22fe6b5a05b916f7c520bd /drivers
parent665d6d4e32313a7952bb3339647f74c3a6b0d78a (diff)
downloadlinux-f78c581e22d4b33359ac3462e8d0504735df01f4.tar.xz
drm/amd/powerplay: use hardware fan control if no powerplay fan table
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
Diffstat (limited to 'drivers')
-rw-r--r--drivers/gpu/drm/amd/powerplay/hwmgr/process_pptables_v1_0.c4
-rw-r--r--drivers/gpu/drm/amd/powerplay/inc/hwmgr.h1
-rw-r--r--drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c4
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 ae64ff7153d6..1cd5a8b5cdc1 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 c92999aac07c..eccb26fddbd0 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/hwmgr.h
@@ -694,6 +694,7 @@ 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 2d4cfe14f72e..29e641c6a5db 100644
--- a/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c
+++ b/drivers/gpu/drm/amd/powerplay/smumgr/polaris10_smumgr.c
@@ -2092,6 +2092,10 @@ 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);