drm/amd/powerplay: enable/disable auto thermal throttle for tonga.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Acked-by: Flora Cui <Flora.Cui@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c
index e7c281f6dbc74565668c96dc89c582452d62f7da..5616ec5dd1ccd942d9738416375987ea669b0570 100644 (file)
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c
@@ -203,6 +203,7 @@ uint8_t tonga_get_voltage_id(pp_atomctrl_voltage_table *voltage_table,
        return i - 1;
 }
 
+
 /**
  * @brief PhwTonga_GetVoltageOrder
  *  Returns index of requested voltage record in lookup(table)
@@ -4327,6 +4328,79 @@ int tonga_program_voting_clients(struct pp_hwmgr *hwmgr)
        return 0;
 }
 
+static void tonga_set_dpm_event_sources(struct pp_hwmgr *hwmgr, uint32_t sources)
+{
+       bool protection;
+       enum DPM_EVENT_SRC src;
+
+       switch (sources) {
+       default:
+               printk(KERN_ERR "Unknown throttling event sources.");
+               /* fall through */
+       case 0:
+               protection = false;
+               /* src is unused */
+               break;
+       case (1 << PHM_AutoThrottleSource_Thermal):
+               protection = true;
+               src = DPM_EVENT_SRC_DIGITAL;
+               break;
+       case (1 << PHM_AutoThrottleSource_External):
+               protection = true;
+               src = DPM_EVENT_SRC_EXTERNAL;
+               break;
+       case (1 << PHM_AutoThrottleSource_External) |
+                       (1 << PHM_AutoThrottleSource_Thermal):
+               protection = true;
+               src = DPM_EVENT_SRC_DIGITAL_OR_EXTERNAL;
+               break;
+       }
+       /* Order matters - don't enable thermal protection for the wrong source. */
+       if (protection) {
+               PHM_WRITE_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, CG_THERMAL_CTRL,
+                               DPM_EVENT_SRC, src);
+               PHM_WRITE_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, GENERAL_PWRMGT,
+                               THERMAL_PROTECTION_DIS,
+                               !phm_cap_enabled(hwmgr->platform_descriptor.platformCaps,
+                                               PHM_PlatformCaps_ThermalController));
+       } else
+               PHM_WRITE_INDIRECT_FIELD(hwmgr->device, CGS_IND_REG__SMC, GENERAL_PWRMGT,
+                               THERMAL_PROTECTION_DIS, 1);
+}
+
+static int tonga_enable_auto_throttle_source(struct pp_hwmgr *hwmgr,
+               PHM_AutoThrottleSource source)
+{
+       struct tonga_hwmgr *data = (struct tonga_hwmgr *)(hwmgr->backend);
+
+       if (!(data->active_auto_throttle_sources & (1 << source))) {
+               data->active_auto_throttle_sources |= 1 << source;
+               tonga_set_dpm_event_sources(hwmgr, data->active_auto_throttle_sources);
+       }
+       return 0;
+}
+
+static int tonga_enable_thermal_auto_throttle(struct pp_hwmgr *hwmgr)
+{
+       return tonga_enable_auto_throttle_source(hwmgr, PHM_AutoThrottleSource_Thermal);
+}
+
+static int tonga_disable_auto_throttle_source(struct pp_hwmgr *hwmgr,
+               PHM_AutoThrottleSource source)
+{
+       struct tonga_hwmgr *data = (struct tonga_hwmgr *)(hwmgr->backend);
+
+       if (data->active_auto_throttle_sources & (1 << source)) {
+               data->active_auto_throttle_sources &= ~(1 << source);
+               tonga_set_dpm_event_sources(hwmgr, data->active_auto_throttle_sources);
+       }
+       return 0;
+}
+
+static int tonga_disable_thermal_auto_throttle(struct pp_hwmgr *hwmgr)
+{
+       return tonga_disable_auto_throttle_source(hwmgr, PHM_AutoThrottleSource_Thermal);
+}
 
 int tonga_enable_dpm_tasks(struct pp_hwmgr *hwmgr)
 {
@@ -4410,6 +4484,10 @@ int tonga_enable_dpm_tasks(struct pp_hwmgr *hwmgr)
        PP_ASSERT_WITH_CODE((tmp_result == 0),
                        "Failed to power control set level!", result = tmp_result);
 
+       tmp_result = tonga_enable_thermal_auto_throttle(hwmgr);
+       PP_ASSERT_WITH_CODE((0 == tmp_result),
+                       "Failed to enable thermal auto throttle!", result = tmp_result);
+
        return result;
 }
 
@@ -4421,6 +4499,10 @@ int tonga_disable_dpm_tasks(struct pp_hwmgr *hwmgr)
        PP_ASSERT_WITH_CODE((0 == tmp_result),
                "SMC is still running!", return 0);
 
+       tmp_result = tonga_disable_thermal_auto_throttle(hwmgr);
+       PP_ASSERT_WITH_CODE((tmp_result == 0),
+                       "Failed to disable thermal auto throttle!", result = tmp_result);
+
        tmp_result = tonga_stop_dpm(hwmgr);
        PP_ASSERT_WITH_CODE((0 == tmp_result),
                "Failed to stop DPM!", result = tmp_result);