mirror of
https://github.com/torvalds/linux.git
synced 2024-11-14 16:12:02 +00:00
46ec8598fd
This patch adds support for ACPI device driver .notify() methods. If such a method is present, Linux/ACPI installs a handler for device notifications (but not for system notifications such as Bus Check, Device Check, etc). When a device notification occurs, Linux/ACPI passes it on to the driver's .notify() method. In most cases, this removes the need for drivers to install their own handlers for device-specific notifications. For fixed hardware devices like some power and sleep buttons, there's no notification value because there's no control method to execute a Notify opcode. When a fixed hardware device generates an event, we handle it the same as a regular device notification, except we send a ACPI_FIXED_HARDWARE_EVENT value. This is outside the normal 0x0-0xff range used by Notify opcodes. Several drivers install their own handlers for system Bus Check and Device Check notifications so they can support hot-plug. This patch doesn't affect that usage. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Reviewed-by: Alex Chiang <achiang@hp.com> Signed-off-by: Len Brown <len.brown@intel.com>
161 lines
5.4 KiB
C
161 lines
5.4 KiB
C
/*
|
|
* acpi_drivers.h ($Revision: 31 $)
|
|
*
|
|
* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
|
|
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or (at
|
|
* your option) any later version.
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program; if not, write to the Free Software Foundation, Inc.,
|
|
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
|
|
*
|
|
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
*/
|
|
|
|
#ifndef __ACPI_DRIVERS_H__
|
|
#define __ACPI_DRIVERS_H__
|
|
|
|
#include <linux/acpi.h>
|
|
#include <acpi/acpi_bus.h>
|
|
|
|
#define ACPI_MAX_STRING 80
|
|
|
|
/*
|
|
* Please update drivers/acpi/debug.c and Documentation/acpi/debug.txt
|
|
* if you add to this list.
|
|
*/
|
|
#define ACPI_BUS_COMPONENT 0x00010000
|
|
#define ACPI_AC_COMPONENT 0x00020000
|
|
#define ACPI_BATTERY_COMPONENT 0x00040000
|
|
#define ACPI_BUTTON_COMPONENT 0x00080000
|
|
#define ACPI_SBS_COMPONENT 0x00100000
|
|
#define ACPI_FAN_COMPONENT 0x00200000
|
|
#define ACPI_PCI_COMPONENT 0x00400000
|
|
#define ACPI_POWER_COMPONENT 0x00800000
|
|
#define ACPI_CONTAINER_COMPONENT 0x01000000
|
|
#define ACPI_SYSTEM_COMPONENT 0x02000000
|
|
#define ACPI_THERMAL_COMPONENT 0x04000000
|
|
#define ACPI_MEMORY_DEVICE_COMPONENT 0x08000000
|
|
#define ACPI_VIDEO_COMPONENT 0x10000000
|
|
#define ACPI_PROCESSOR_COMPONENT 0x20000000
|
|
|
|
/*
|
|
* _HID definitions
|
|
* HIDs must conform to ACPI spec(6.1.4)
|
|
* Linux specific HIDs do not apply to this and begin with LNX:
|
|
*/
|
|
|
|
#define ACPI_POWER_HID "LNXPOWER"
|
|
#define ACPI_PROCESSOR_OBJECT_HID "ACPI_CPU"
|
|
#define ACPI_PROCESSOR_HID "ACPI0007"
|
|
#define ACPI_SYSTEM_HID "LNXSYSTM"
|
|
#define ACPI_THERMAL_HID "LNXTHERM"
|
|
#define ACPI_BUTTON_HID_POWERF "LNXPWRBN"
|
|
#define ACPI_BUTTON_HID_SLEEPF "LNXSLPBN"
|
|
#define ACPI_VIDEO_HID "LNXVIDEO"
|
|
#define ACPI_BAY_HID "LNXIOBAY"
|
|
#define ACPI_DOCK_HID "LNXDOCK"
|
|
|
|
/*
|
|
* For fixed hardware buttons, we fabricate acpi_devices with HID
|
|
* ACPI_BUTTON_HID_POWERF or ACPI_BUTTON_HID_SLEEPF. Fixed hardware
|
|
* signals only an event; it doesn't supply a notification value.
|
|
* To allow drivers to treat notifications from fixed hardware the
|
|
* same as those from real devices, we turn the events into this
|
|
* notification value.
|
|
*/
|
|
#define ACPI_FIXED_HARDWARE_EVENT 0x100
|
|
|
|
/* --------------------------------------------------------------------------
|
|
PCI
|
|
-------------------------------------------------------------------------- */
|
|
|
|
|
|
/* ACPI PCI Interrupt Link (pci_link.c) */
|
|
|
|
int acpi_irq_penalty_init(void);
|
|
int acpi_pci_link_allocate_irq(acpi_handle handle, int index, int *triggering,
|
|
int *polarity, char **name);
|
|
int acpi_pci_link_free_irq(acpi_handle handle);
|
|
|
|
/* ACPI PCI Interrupt Routing (pci_irq.c) */
|
|
|
|
int acpi_pci_irq_add_prt(acpi_handle handle, int segment, int bus);
|
|
void acpi_pci_irq_del_prt(int segment, int bus);
|
|
|
|
/* ACPI PCI Device Binding (pci_bind.c) */
|
|
|
|
struct pci_bus;
|
|
|
|
acpi_status acpi_get_pci_id(acpi_handle handle, struct acpi_pci_id *id);
|
|
int acpi_pci_bind(struct acpi_device *device);
|
|
int acpi_pci_bind_root(struct acpi_device *device, struct acpi_pci_id *id,
|
|
struct pci_bus *bus);
|
|
|
|
/* Arch-defined function to add a bus to the system */
|
|
|
|
struct pci_bus *pci_acpi_scan_root(struct acpi_device *device, int domain,
|
|
int bus);
|
|
|
|
/* --------------------------------------------------------------------------
|
|
Processor
|
|
-------------------------------------------------------------------------- */
|
|
|
|
#define ACPI_PROCESSOR_LIMIT_NONE 0x00
|
|
#define ACPI_PROCESSOR_LIMIT_INCREMENT 0x01
|
|
#define ACPI_PROCESSOR_LIMIT_DECREMENT 0x02
|
|
|
|
int acpi_processor_set_thermal_limit(acpi_handle handle, int type);
|
|
|
|
/*--------------------------------------------------------------------------
|
|
Dock Station
|
|
-------------------------------------------------------------------------- */
|
|
struct acpi_dock_ops {
|
|
acpi_notify_handler handler;
|
|
acpi_notify_handler uevent;
|
|
};
|
|
|
|
#if defined(CONFIG_ACPI_DOCK) || defined(CONFIG_ACPI_DOCK_MODULE)
|
|
extern int is_dock_device(acpi_handle handle);
|
|
extern int register_dock_notifier(struct notifier_block *nb);
|
|
extern void unregister_dock_notifier(struct notifier_block *nb);
|
|
extern int register_hotplug_dock_device(acpi_handle handle,
|
|
struct acpi_dock_ops *ops,
|
|
void *context);
|
|
extern void unregister_hotplug_dock_device(acpi_handle handle);
|
|
#else
|
|
static inline int is_dock_device(acpi_handle handle)
|
|
{
|
|
return 0;
|
|
}
|
|
static inline int register_dock_notifier(struct notifier_block *nb)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
static inline void unregister_dock_notifier(struct notifier_block *nb)
|
|
{
|
|
}
|
|
static inline int register_hotplug_dock_device(acpi_handle handle,
|
|
struct acpi_dock_ops *ops,
|
|
void *context)
|
|
{
|
|
return -ENODEV;
|
|
}
|
|
static inline void unregister_hotplug_dock_device(acpi_handle handle)
|
|
{
|
|
}
|
|
#endif
|
|
|
|
#endif /*__ACPI_DRIVERS_H__*/
|