wmi.h 1.6 KB

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  1. /* SPDX-License-Identifier: GPL-2.0-only */
  2. /*
  3. * wmi.h - ACPI WMI interface
  4. *
  5. * Copyright (c) 2015 Andrew Lutomirski
  6. */
  7. #ifndef _LINUX_WMI_H
  8. #define _LINUX_WMI_H
  9. #include <linux/device.h>
  10. #include <linux/acpi.h>
  11. #include <linux/mod_devicetable.h>
  12. #include <uapi/linux/wmi.h>
  13. struct wmi_device {
  14. struct device dev;
  15. /* True for data blocks implementing the Set Control Method */
  16. bool setable;
  17. };
  18. /* evaluate the ACPI method associated with this device */
  19. extern acpi_status wmidev_evaluate_method(struct wmi_device *wdev,
  20. u8 instance, u32 method_id,
  21. const struct acpi_buffer *in,
  22. struct acpi_buffer *out);
  23. /* Caller must kfree the result. */
  24. extern union acpi_object *wmidev_block_query(struct wmi_device *wdev,
  25. u8 instance);
  26. extern int set_required_buffer_size(struct wmi_device *wdev, u64 length);
  27. struct wmi_driver {
  28. struct device_driver driver;
  29. const struct wmi_device_id *id_table;
  30. int (*probe)(struct wmi_device *wdev, const void *context);
  31. int (*remove)(struct wmi_device *wdev);
  32. void (*notify)(struct wmi_device *device, union acpi_object *data);
  33. long (*filter_callback)(struct wmi_device *wdev, unsigned int cmd,
  34. struct wmi_ioctl_buffer *arg);
  35. };
  36. extern int __must_check __wmi_driver_register(struct wmi_driver *driver,
  37. struct module *owner);
  38. extern void wmi_driver_unregister(struct wmi_driver *driver);
  39. #define wmi_driver_register(driver) __wmi_driver_register((driver), THIS_MODULE)
  40. #define module_wmi_driver(__wmi_driver) \
  41. module_driver(__wmi_driver, wmi_driver_register, \
  42. wmi_driver_unregister)
  43. #endif