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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>
This commit is contained in:
Rex Zhu 2016-09-05 17:49:19 +08:00 committed by Alex Deucher
parent 74b0b15784
commit 2377cd945f
1 changed files with 82 additions and 0 deletions
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82
drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c
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@ -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);