tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Common functions for kernel modules using Dell SMBIOS
3 *
4 * Copyright (c) Red Hat <mjg@redhat.com>
5 * Copyright (c) 2014 Gabriele Mazzotta <gabriele.mzt@gmail.com>
6 * Copyright (c) 2014 Pali Rohár <pali.rohar@gmail.com>
7 *
8 * Based on documentation in the libsmbios package:
9 * Copyright (C) 2005-2014 Dell Inc.
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 */
15
16#ifndef _DELL_SMBIOS_H_
17#define _DELL_SMBIOS_H_
18
19#include <linux/device.h>
20#include <uapi/linux/wmi.h>
21
22/* Classes and selects used only in kernel drivers */
23#define CLASS_KBD_BACKLIGHT 4
24#define SELECT_KBD_BACKLIGHT 11
25
26/* Tokens used in kernel drivers, any of these
27 * should be filtered from userspace access
28 */
29#define BRIGHTNESS_TOKEN 0x007d
30#define KBD_LED_AC_TOKEN 0x0451
31#define KBD_LED_OFF_TOKEN 0x01E1
32#define KBD_LED_ON_TOKEN 0x01E2
33#define KBD_LED_AUTO_TOKEN 0x01E3
34#define KBD_LED_AUTO_25_TOKEN 0x02EA
35#define KBD_LED_AUTO_50_TOKEN 0x02EB
36#define KBD_LED_AUTO_75_TOKEN 0x02EC
37#define KBD_LED_AUTO_100_TOKEN 0x02F6
38#define GLOBAL_MIC_MUTE_ENABLE 0x0364
39#define GLOBAL_MIC_MUTE_DISABLE 0x0365
40
41struct notifier_block;
42
43struct calling_interface_token {
44 u16 tokenID;
45 u16 location;
46 union {
47 u16 value;
48 u16 stringlength;
49 };
50};
51
52struct calling_interface_structure {
53 struct dmi_header header;
54 u16 cmdIOAddress;
55 u8 cmdIOCode;
56 u32 supportedCmds;
57 struct calling_interface_token tokens[];
58} __packed;
59
60int dell_smbios_register_device(struct device *d, void *call_fn);
61void dell_smbios_unregister_device(struct device *d);
62
63int dell_smbios_error(int value);
64int dell_smbios_call_filter(struct device *d,
65 struct calling_interface_buffer *buffer);
66int dell_smbios_call(struct calling_interface_buffer *buffer);
67
68struct calling_interface_token *dell_smbios_find_token(int tokenid);
69
70enum dell_laptop_notifier_actions {
71 DELL_LAPTOP_KBD_BACKLIGHT_BRIGHTNESS_CHANGED,
72};
73
74int dell_laptop_register_notifier(struct notifier_block *nb);
75int dell_laptop_unregister_notifier(struct notifier_block *nb);
76void dell_laptop_call_notifier(unsigned long action, void *data);
77
78/* for the supported backends */
79#ifdef CONFIG_DELL_SMBIOS_WMI
80int init_dell_smbios_wmi(void);
81void exit_dell_smbios_wmi(void);
82#else /* CONFIG_DELL_SMBIOS_WMI */
83static inline int init_dell_smbios_wmi(void)
84{
85 return -ENODEV;
86}
87static inline void exit_dell_smbios_wmi(void)
88{}
89#endif /* CONFIG_DELL_SMBIOS_WMI */
90
91#ifdef CONFIG_DELL_SMBIOS_SMM
92int init_dell_smbios_smm(void);
93void exit_dell_smbios_smm(void);
94#else /* CONFIG_DELL_SMBIOS_SMM */
95static inline int init_dell_smbios_smm(void)
96{
97 return -ENODEV;
98}
99static inline void exit_dell_smbios_smm(void)
100{}
101#endif /* CONFIG_DELL_SMBIOS_SMM */
102
103#endif /* _DELL_SMBIOS_H_ */