From 2377cd945fcd024a4083729a90b33231d2e1e721 Mon Sep 17 00:00:00 2001 From: Rex Zhu Date: Mon, 5 Sep 2016 17:49:19 +0800 Subject: [PATCH] drm/amd/powerplay: enable/disable auto thermal throttle for tonga. Signed-off-by: Rex Zhu Acked-by: Flora Cui Reviewed-by: Alex Deucher Signed-off-by: Alex Deucher --- .../gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c | 82 +++++++++++++++++++ 1 file changed, 82 insertions(+) diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/tonga_hwmgr.c index e7c281f6dbc7..5616ec5dd1cc 100644 --- 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); -- 2.20.1