drivers/acpi/fan.h

   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         {"PNP0C0B", } /* Generic ACPI fan */
  23
  24 #define ACPI_FPS_NAME_LEN       20
  25
  26 struct acpi_fan_fps {
  27         u64 control;
  28         u64 trip_point;
  29         u64 speed;
  30         u64 noise_level;
  31         u64 power;
  32         char name[ACPI_FPS_NAME_LEN];
  33         struct device_attribute dev_attr;
  34 };
  35
  36 struct acpi_fan_fif {
  37         u8 revision;
  38         u8 fine_grain_ctrl;
  39         u8 step_size;
  40         u8 low_speed_notification;
  41 };
  42
  43 struct acpi_fan_fst {
  44         u64 revision;
  45         u64 control;
  46         u64 speed;
  47 };
  48
  49 struct acpi_fan {
  50         bool acpi4;
  51         struct acpi_fan_fif fif;
  52         struct acpi_fan_fps *fps;
  53         int fps_count;
  54         struct thermal_cooling_device *cdev;
  55         struct device_attribute fst_speed;
  56         struct device_attribute fine_grain_control;
  57 };
  58
  59 int acpi_fan_get_fst(struct acpi_device *device, struct acpi_fan_fst *fst);
  60 int acpi_fan_create_attributes(struct acpi_device *device);
  61 void acpi_fan_delete_attributes(struct acpi_device *device);
  62
  63 #if IS_REACHABLE(CONFIG_HWMON)
  64 int devm_acpi_fan_create_hwmon(struct acpi_device *device);
  65 #else
  66 static inline int devm_acpi_fan_create_hwmon(struct acpi_device *device) { return 0; };
  67 #endif
  68
  69 #endif