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#include <linux/kconfig.h>
14
15#define ACPI_FAN_DEVICE_IDS \
16 {"INT3404", }, /* Fan */ \
17 {"INTC1044", }, /* Fan for Tiger Lake generation */ \
18 {"INTC1048", }, /* Fan for Alder Lake generation */ \
19 {"INTC1063", }, /* Fan for Meteor Lake generation */ \
20 {"INTC106A", }, /* Fan for Lunar Lake generation */ \
21 {"INTC10A2", }, /* Fan for Raptor Lake generation */ \
22 {"INTC10D6", }, /* Fan for Panther Lake generation */ \
23 {"INTC10FE", }, /* Fan for Wildcat Lake generation */ \
24 {"PNP0C0B", } /* Generic ACPI fan */
25
26#define ACPI_FPS_NAME_LEN 20
27
28struct acpi_fan_fps {
29 u64 control;
30 u64 trip_point;
31 u64 speed;
32 u64 noise_level;
33 u64 power;
34 char name[ACPI_FPS_NAME_LEN];
35 struct device_attribute dev_attr;
36};
37
38struct acpi_fan_fif {
39 u8 revision;
40 u8 fine_grain_ctrl;
41 u8 step_size;
42 u8 low_speed_notification;
43};
44
45struct acpi_fan_fst {
46 u64 revision;
47 u64 control;
48 u64 speed;
49};
50
51struct acpi_fan {
52 bool acpi4;
53 bool has_fst;
54 struct acpi_fan_fif fif;
55 struct acpi_fan_fps *fps;
56 int fps_count;
57 struct thermal_cooling_device *cdev;
58 struct device_attribute fst_speed;
59 struct device_attribute fine_grain_control;
60};
61
62int acpi_fan_get_fst(struct acpi_device *device, struct acpi_fan_fst *fst);
63int acpi_fan_create_attributes(struct acpi_device *device);
64void acpi_fan_delete_attributes(struct acpi_device *device);
65
66#if IS_REACHABLE(CONFIG_HWMON)
67int devm_acpi_fan_create_hwmon(struct acpi_device *device);
68#else
69static inline int devm_acpi_fan_create_hwmon(struct acpi_device *device) { return 0; };
70#endif
71
72#endif
73