fd70da6a62
The Microsoft WMI documentation requires all data blocks to implement the Query Control Method (WQxx). If we encounter a data block not implementing this control method, issue a warning, and ignore the data block. Remove the "readable" attribute as all data blocks must be readable (query-able). Be consistent with the language in the documentation, replace the "writable" attribute with "setable". Simplify (flatten) the control flow of wmi_create_device a bit while we are updating it for the above changes. Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Mario Limonciello <mario_limonciello@dell.com> Cc: Pali Rohár <pali.rohar@gmail.com> Cc: linux-kernel@vger.kernel.org Cc: platform-driver-x86@vger.kernel.org Cc: linux-acpi@vger.kernel.org Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/*
|
|
* wmi.h - ACPI WMI interface
|
|
*
|
|
* Copyright (c) 2015 Andrew Lutomirski
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*/
|
|
|
|
#ifndef _LINUX_WMI_H
|
|
#define _LINUX_WMI_H
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/acpi.h>
|
|
|
|
struct wmi_device {
|
|
struct device dev;
|
|
|
|
/* True for data blocks implementing the Set Control Method */
|
|
bool setable;
|
|
};
|
|
|
|
/* Caller must kfree the result. */
|
|
extern union acpi_object *wmidev_block_query(struct wmi_device *wdev,
|
|
u8 instance);
|
|
|
|
/* Gets another device on the same bus. Caller must put_device the result. */
|
|
extern struct wmi_device *wmidev_get_other_guid(struct wmi_device *wdev,
|
|
const char *guid_string);
|
|
|
|
struct wmi_device_id {
|
|
const char *guid_string;
|
|
};
|
|
|
|
struct wmi_driver {
|
|
struct device_driver driver;
|
|
const struct wmi_device_id *id_table;
|
|
|
|
int (*probe)(struct wmi_device *wdev);
|
|
int (*remove)(struct wmi_device *wdev);
|
|
void (*notify)(struct wmi_device *device, union acpi_object *data);
|
|
};
|
|
|
|
extern int __must_check __wmi_driver_register(struct wmi_driver *driver,
|
|
struct module *owner);
|
|
extern void wmi_driver_unregister(struct wmi_driver *driver);
|
|
#define wmi_driver_register(driver) __wmi_driver_register((driver), THIS_MODULE)
|
|
|
|
#define module_wmi_driver(__wmi_driver) \
|
|
module_driver(__wmi_driver, wmi_driver_register, \
|
|
wmi_driver_unregister)
|
|
|
|
#endif
|