/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Common functions for kernel modules using Dell SMBIOS
*
* Copyright ( c ) Red Hat < mjg @ redhat . com >
* Copyright ( c ) 2014 Gabriele Mazzotta < gabriele . mzt @ gmail . com >
* Copyright ( c ) 2014 Pali Roh á r < pali @ kernel . org >
*
* Based on documentation in the libsmbios package :
* Copyright ( C ) 2005 - 2014 Dell Inc .
*/
#ifndef _DELL_SMBIOS_H_
#define _DELL_SMBIOS_H_
#include <linux/device.h>
#include <uapi/linux/wmi.h>
/* Classes and selects used only in kernel drivers */
#define CLASS_KBD_BACKLIGHT 4
#define SELECT_KBD_BACKLIGHT 11
#define SELECT_THERMAL_MANAGEMENT 19
/* Tokens used in kernel drivers, any of these
* should be filtered from userspace access
*/
#define BRIGHTNESS_TOKEN 0 x007d
#define KBD_LED_AC_TOKEN 0 x0451
#define KBD_LED_OFF_TOKEN 0 x01E1
#define KBD_LED_ON_TOKEN 0 x01E2
#define KBD_LED_AUTO_TOKEN 0 x01E3
#define KBD_LED_AUTO_25_TOKEN 0 x02EA
#define KBD_LED_AUTO_50_TOKEN 0 x02EB
#define KBD_LED_AUTO_75_TOKEN 0 x02EC
#define KBD_LED_AUTO_100_TOKEN 0 x02F6
#define BAT_PRI_AC_MODE_TOKEN 0 x0341
#define BAT_ADAPTIVE_MODE_TOKEN 0 x0342
#define BAT_CUSTOM_MODE_TOKEN 0 x0343
#define BAT_STANDARD_MODE_TOKEN 0 x0346
#define BAT_EXPRESS_MODE_TOKEN 0 x0347
#define BAT_CUSTOM_CHARGE_START 0 x0349
#define BAT_CUSTOM_CHARGE_END 0 x034A
#define GLOBAL_MIC_MUTE_ENABLE 0 x0364
#define GLOBAL_MIC_MUTE_DISABLE 0 x0365
#define GLOBAL_MUTE_ENABLE 0 x058C
#define GLOBAL_MUTE_DISABLE 0 x058D
struct notifier_block;
struct calling_interface_token {
u16 tokenID;
u16 location;
union {
u16 value;
u16 stringlength;
};
};
struct calling_interface_structure {
struct dmi_header header;
u16 cmdIOAddress;
u8 cmdIOCode;
u32 supportedCmds;
struct calling_interface_token tokens[];
} __packed;
int dell_smbios_register_device(struct device *d, int priority, void *call_fn);
void dell_smbios_unregister_device(struct device *d);
int dell_smbios_error(int value);
int dell_smbios_call_filter(struct device *d,
struct calling_interface_buffer *buffer);
int dell_smbios_call(struct calling_interface_buffer *buffer);
void dell_fill_request(struct calling_interface_buffer *buffer,
u32 arg0, u32 arg1, u32 arg2, u32 arg3);
int dell_send_request(struct calling_interface_buffer *buffer,
u16 class , u16 select);
struct calling_interface_token *dell_smbios_find_token(int tokenid);
enum dell_laptop_notifier_actions {
DELL_LAPTOP_KBD_BACKLIGHT_BRIGHTNESS_CHANGED,
};
int dell_laptop_register_notifier(struct notifier_block *nb);
int dell_laptop_unregister_notifier(struct notifier_block *nb);
void dell_laptop_call_notifier(unsigned long action, void *data);
bool dell_smbios_class_is_supported(u16 class );
/* for the supported backends */
#ifdef CONFIG_DELL_SMBIOS_WMI
int init_dell_smbios_wmi(void );
void exit_dell_smbios_wmi(void );
#else /* CONFIG_DELL_SMBIOS_WMI */
static inline int init_dell_smbios_wmi(void )
{
return -ENODEV;
}
static inline void exit_dell_smbios_wmi(void )
{}
#endif /* CONFIG_DELL_SMBIOS_WMI */
#ifdef CONFIG_DELL_SMBIOS_SMM
int init_dell_smbios_smm(void );
void exit_dell_smbios_smm(void );
#else /* CONFIG_DELL_SMBIOS_SMM */
static inline int init_dell_smbios_smm(void )
{
return -ENODEV;
}
static inline void exit_dell_smbios_smm(void )
{}
#endif /* CONFIG_DELL_SMBIOS_SMM */
#endif /* _DELL_SMBIOS_H_ */
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