linux/drivers/accel/habanalabs/common/hwmon.c

// SPDX-License-Identifier: GPL-2.0

/*
 * Copyright 2016-2019 HabanaLabs, Ltd.
 * All Rights Reserved.
 */

#include "habanalabs.h"

#include <linux/pci.h>
#include <linux/hwmon.h>

#define HWMON_NR_SENSOR_TYPES …

#ifdef _HAS_HWMON_HWMON_T_ENABLE

static u32 fixup_flags_legacy_fw(struct hl_device *hdev, enum hwmon_sensor_types type,
					u32 cpucp_flags)
{
	u32 flags;

	switch (type) {
	case hwmon_temp:
		flags = (cpucp_flags << 1) | HWMON_T_ENABLE;
		break;

	case hwmon_in:
		flags = (cpucp_flags << 1) | HWMON_I_ENABLE;
		break;

	case hwmon_curr:
		flags = (cpucp_flags << 1) | HWMON_C_ENABLE;
		break;

	case hwmon_fan:
		flags = (cpucp_flags << 1) | HWMON_F_ENABLE;
		break;

	case hwmon_power:
		flags = (cpucp_flags << 1) | HWMON_P_ENABLE;
		break;

	case hwmon_pwm:
		/* enable bit was here from day 1, so no need to adjust */
		flags = cpucp_flags;
		break;

	default:
		dev_err_ratelimited(hdev->dev, "unsupported h/w sensor type %d\n", type);
		flags = cpucp_flags;
		break;
	}

	return flags;
}

static u32 fixup_attr_legacy_fw(u32 attr)
{
	return (attr - 1);
}

#else

static u32 fixup_flags_legacy_fw(struct hl_device *hdev, enum hwmon_sensor_types type,
						u32 cpucp_flags)
{ … }

static u32 fixup_attr_legacy_fw(u32 attr)
{ … }

#endif /* !_HAS_HWMON_HWMON_T_ENABLE */

static u32 adjust_hwmon_flags(struct hl_device *hdev, enum hwmon_sensor_types type, u32 cpucp_flags)
{ … }

int hl_build_hwmon_channel_info(struct hl_device *hdev, struct cpucp_sensor *sensors_arr)
{ … }

static int hl_read(struct device *dev, enum hwmon_sensor_types type,
			u32 attr, int channel, long *val)
{ … }

static int hl_write(struct device *dev, enum hwmon_sensor_types type,
			u32 attr, int channel, long val)
{ … }

static umode_t hl_is_visible(const void *data, enum hwmon_sensor_types type,
				u32 attr, int channel)
{ … }

static const struct hwmon_ops hl_hwmon_ops = …;

int hl_get_temperature(struct hl_device *hdev,
			int sensor_index, u32 attr, long *value)
{ … }

int hl_set_temperature(struct hl_device *hdev,
			int sensor_index, u32 attr, long value)
{ … }

int hl_get_voltage(struct hl_device *hdev,
			int sensor_index, u32 attr, long *value)
{ … }

int hl_get_current(struct hl_device *hdev,
			int sensor_index, u32 attr, long *value)
{ … }

int hl_get_fan_speed(struct hl_device *hdev,
			int sensor_index, u32 attr, long *value)
{ … }

int hl_get_pwm_info(struct hl_device *hdev,
			int sensor_index, u32 attr, long *value)
{ … }

void hl_set_pwm_info(struct hl_device *hdev, int sensor_index, u32 attr,
			long value)
{ … }

int hl_set_voltage(struct hl_device *hdev,
			int sensor_index, u32 attr, long value)
{ … }

int hl_set_current(struct hl_device *hdev,
			int sensor_index, u32 attr, long value)
{ … }

int hl_set_power(struct hl_device *hdev,
			int sensor_index, u32 attr, long value)
{ … }

int hl_get_power(struct hl_device *hdev,
			int sensor_index, u32 attr, long *value)
{ … }

int hl_hwmon_init(struct hl_device *hdev)
{ … }

void hl_hwmon_fini(struct hl_device *hdev)
{ … }

void hl_hwmon_release_resources(struct hl_device *hdev)
{ … }