1/* SPDX-License-Identifier: GPL-2.0-only */
2
3/*
4 * ACPI fan device IDs are shared between the fan driver and the device power
5 * management code.
6 *
7 * Add new device IDs before the generic ACPI fan one.
8 */
9
10#ifndef _ACPI_FAN_H_
11#define _ACPI_FAN_H_
12
13#define ACPI_FAN_DEVICE_IDS \
14 {"INT3404", }, /* Fan */ \
15 {"INTC1044", }, /* Fan for Tiger Lake generation */ \
16 {"INTC1048", }, /* Fan for Alder Lake generation */ \
17 {"INTC1063", }, /* Fan for Meteor Lake generation */ \
18 {"INTC10A2", }, /* Fan for Raptor Lake generation */ \
19 {"PNP0C0B", } /* Generic ACPI fan */
20
21#define ACPI_FPS_NAME_LEN 20
22
23struct acpi_fan_fps {
24 u64 control;
25 u64 trip_point;
26 u64 speed;
27 u64 noise_level;
28 u64 power;
29 char name[ACPI_FPS_NAME_LEN];
30 struct device_attribute dev_attr;
31};
32
33struct acpi_fan_fif {
34 u8 revision;
35 u8 fine_grain_ctrl;
36 u8 step_size;
37 u8 low_speed_notification;
38};
39
40struct acpi_fan_fst {
41 u64 revision;
42 u64 control;
43 u64 speed;
44};
45
46struct acpi_fan {
47 bool acpi4;
48 struct acpi_fan_fif fif;
49 struct acpi_fan_fps *fps;
50 int fps_count;
51 struct thermal_cooling_device *cdev;
52 struct device_attribute fst_speed;
53 struct device_attribute fine_grain_control;
54};
55
56int acpi_fan_get_fst(struct acpi_device *device, struct acpi_fan_fst *fst);
57int acpi_fan_create_attributes(struct acpi_device *device);
58void acpi_fan_delete_attributes(struct acpi_device *device);
59#endif
60

source code of linux/drivers/acpi/fan.h