diff options
Diffstat (limited to 'drivers/platform/x86/dell/dell-smbios.h')
| -rw-r--r-- | drivers/platform/x86/dell/dell-smbios.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/drivers/platform/x86/dell/dell-smbios.h b/drivers/platform/x86/dell/dell-smbios.h new file mode 100644 index 000000000..75fa8ea04 --- /dev/null +++ b/drivers/platform/x86/dell/dell-smbios.h @@ -0,0 +1,100 @@ +/* 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 Rohár <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 + +/* Tokens used in kernel drivers, any of these + * should be filtered from userspace access + */ +#define BRIGHTNESS_TOKEN 0x007d +#define KBD_LED_AC_TOKEN 0x0451 +#define KBD_LED_OFF_TOKEN 0x01E1 +#define KBD_LED_ON_TOKEN 0x01E2 +#define KBD_LED_AUTO_TOKEN 0x01E3 +#define KBD_LED_AUTO_25_TOKEN 0x02EA +#define KBD_LED_AUTO_50_TOKEN 0x02EB +#define KBD_LED_AUTO_75_TOKEN 0x02EC +#define KBD_LED_AUTO_100_TOKEN 0x02F6 +#define GLOBAL_MIC_MUTE_ENABLE 0x0364 +#define GLOBAL_MIC_MUTE_DISABLE 0x0365 + +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, 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); + +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); + +/* 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_ */ |