drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_thermal.c

Source file repositories/reference/linux-study-clean/drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_thermal.c

File Facts

System
Linux kernel
Corpus path
drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_thermal.c
Extension
.c
Size
10061 bytes
Lines
357
Domain
Driver Families
Bucket
drivers/gpu
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

#include "vega20_thermal.h"
#include "vega20_hwmgr.h"
#include "vega20_smumgr.h"
#include "vega20_ppsmc.h"
#include "vega20_inc.h"
#include "soc15_common.h"
#include "pp_debug.h"

static int vega20_disable_fan_control_feature(struct pp_hwmgr *hwmgr)
{
	struct vega20_hwmgr *data = hwmgr->backend;
	int ret = 0;

	if (data->smu_features[GNLD_FAN_CONTROL].supported) {
		ret = vega20_enable_smc_features(
				hwmgr, false,
				data->smu_features[GNLD_FAN_CONTROL].
				smu_feature_bitmap);
		PP_ASSERT_WITH_CODE(!ret,
				"Disable FAN CONTROL feature Failed!",
				return ret);
		data->smu_features[GNLD_FAN_CONTROL].enabled = false;
	}

	return ret;
}

int vega20_fan_ctrl_stop_smc_fan_control(struct pp_hwmgr *hwmgr)
{
	struct vega20_hwmgr *data = hwmgr->backend;

	if (data->smu_features[GNLD_FAN_CONTROL].supported)
		return vega20_disable_fan_control_feature(hwmgr);

	return 0;
}

static int vega20_enable_fan_control_feature(struct pp_hwmgr *hwmgr)
{
	struct vega20_hwmgr *data = hwmgr->backend;
	int ret = 0;

	if (data->smu_features[GNLD_FAN_CONTROL].supported) {
		ret = vega20_enable_smc_features(
				hwmgr, true,
				data->smu_features[GNLD_FAN_CONTROL].
				smu_feature_bitmap);
		PP_ASSERT_WITH_CODE(!ret,
				"Enable FAN CONTROL feature Failed!",
				return ret);
		data->smu_features[GNLD_FAN_CONTROL].enabled = true;
	}

	return ret;
}

int vega20_fan_ctrl_start_smc_fan_control(struct pp_hwmgr *hwmgr)
{
	struct vega20_hwmgr *data = hwmgr->backend;

	if (data->smu_features[GNLD_FAN_CONTROL].supported)
		return vega20_enable_fan_control_feature(hwmgr);

	return 0;
}

static int vega20_fan_ctrl_set_static_mode(struct pp_hwmgr *hwmgr, uint32_t mode)
{
	struct amdgpu_device *adev = hwmgr->adev;

	WREG32_SOC15(THM, 0, mmCG_FDO_CTRL2,
			REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL2),
				CG_FDO_CTRL2, TMIN, 0));
	WREG32_SOC15(THM, 0, mmCG_FDO_CTRL2,
			REG_SET_FIELD(RREG32_SOC15(THM, 0, mmCG_FDO_CTRL2),
				CG_FDO_CTRL2, FDO_PWM_MODE, mode));

	return 0;
}

static int vega20_get_current_rpm(struct pp_hwmgr *hwmgr, uint32_t *current_rpm)
{
	int ret = 0;

	PP_ASSERT_WITH_CODE((ret = smum_send_msg_to_smc(hwmgr,
				PPSMC_MSG_GetCurrentRpm,
				current_rpm)) == 0,
			"Attempt to get current RPM from SMC Failed!",
			return ret);

Annotation

Implementation Notes