Commit fb9802fa authored by Luming Yu's avatar Luming Yu Committed by Len Brown

[ACPI] generic Hot Key support

See Documentation/acpi-hotkey.txt

Use cmdline "acpi_specific_hotkey" to enable
legacy platform specific drivers.

http://bugzilla.kernel.org/show_bug.cgi?id=3887Signed-off-by: default avatarLuming Yu <luming.yu@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent d58da590
driver/acpi/hotkey.c implement:
1. /proc/acpi/hotkey/event_config
(event based hotkey or event config interface):
a. add a event based hotkey(event) :
echo "0:bus::action:method:num:num" > event_config
b. delete a event based hotkey(event):
echo "1:::::num:num" > event_config
c. modify a event based hotkey(event):
echo "2:bus::action:method:num:num" > event_config
2. /proc/acpi/hotkey/poll_config
(polling based hotkey or event config interface):
a.add a polling based hotkey(event) :
echo "0:bus:method:action:method:num" > poll_config
this adding command will create a proc file
/proc/acpi/hotkey/method, which is used to get
result of polling.
b.delete a polling based hotkey(event):
echo "1:::::num" > event_config
c.modify a polling based hotkey(event):
echo "2:bus:method:action:method:num" > poll_config
3./proc/acpi/hotkey/action
(interface to call aml method associated with a
specific hotkey(event))
echo "event_num:event_type:event_argument" >
/proc/acpi/hotkey/action.
The result of the execution of this aml method is
attached to /proc/acpi/hotkey/poll_method, which is dnyamically
created. Please use command "cat /proc/acpi/hotkey/polling_method"
to retrieve it.
......@@ -123,6 +123,15 @@ config ACPI_VIDEO
Note that this is an ref. implementation only. It may or may not work
for your integrated video device.
config ACPI_HOTKEY
tristate "Generic Hotkey"
depends on ACPI_INTERPRETER
depends on EXPERIMENTAL
depends on !IA64_SGI_SN
default m
help
ACPI generic hotkey
config ACPI_FAN
tristate "Fan"
depends on !IA64_SGI_SN
......
......@@ -42,7 +42,8 @@ obj-$(CONFIG_ACPI_BATTERY) += battery.o
obj-$(CONFIG_ACPI_BUTTON) += button.o
obj-$(CONFIG_ACPI_EC) += ec.o
obj-$(CONFIG_ACPI_FAN) += fan.o
obj-$(CONFIG_ACPI_VIDEO) += video.o
obj-$(CONFIG_ACPI_VIDEO) += video.o
obj-$(CONFIG_ACPI_HOTKEY) += hotkey.o
obj-$(CONFIG_ACPI_PCI) += pci_root.o pci_link.o pci_irq.o pci_bind.o
obj-$(CONFIG_ACPI_POWER) += power.o
obj-$(CONFIG_ACPI_PROCESSOR) += processor.o
......
......@@ -1204,6 +1204,10 @@ static int __init asus_acpi_init(void)
if (acpi_disabled)
return -ENODEV;
if (!acpi_specific_hotkey_enabled){
printk(KERN_ERR "Using generic hotkey driver\n");
return -ENODEV;
}
asus_proc_dir = proc_mkdir(PROC_ASUS, acpi_root_dir);
if (!asus_proc_dir) {
printk(KERN_ERR "Asus ACPI: Unable to create /proc entry\n");
......
This diff is collapsed.
......@@ -1185,6 +1185,10 @@ static int __init acpi_ibm_init(void)
if (acpi_disabled)
return -ENODEV;
if (!acpi_specific_hotkey_enabled){
printk(IBM_ERR "Using generic hotkey driver\n");
return -ENODEV;
}
/* these handles are required */
if (IBM_HANDLE_INIT(ec, 1) < 0 ||
IBM_HANDLE_INIT(hkey, 1) < 0 ||
......
......@@ -71,6 +71,9 @@ EXPORT_SYMBOL(acpi_in_debugger);
extern char line_buf[80];
#endif /*ENABLE_DEBUGGER*/
int acpi_specific_hotkey_enabled;
EXPORT_SYMBOL(acpi_specific_hotkey_enabled);
static unsigned int acpi_irq_irq;
static acpi_osd_handler acpi_irq_handler;
static void *acpi_irq_context;
......@@ -1152,6 +1155,15 @@ acpi_wake_gpes_always_on_setup(char *str)
__setup("acpi_wake_gpes_always_on", acpi_wake_gpes_always_on_setup);
int __init
acpi_hotkey_setup(char *str)
{
acpi_specific_hotkey_enabled = TRUE;
return 1;
}
__setup("acpi_specific_hotkey", acpi_hotkey_setup);
/*
* max_cstate is defined in the base kernel so modules can
* change it w/o depending on the state of the processor module.
......
......@@ -529,6 +529,11 @@ toshiba_acpi_init(void)
if (acpi_disabled)
return -ENODEV;
if (!acpi_specific_hotkey_enabled){
printk(MY_INFO "Using generic hotkey driver\n");
return -ENODEV;
}
/* simple device detection: look for HCI method */
if (is_valid_acpi_path(METHOD_HCI_1))
method_hci = METHOD_HCI_1;
......
......@@ -108,5 +108,10 @@ int acpi_ec_ecdt_probe (void);
int acpi_processor_set_thermal_limit(acpi_handle handle, int type);
/* --------------------------------------------------------------------------
Hot Keys
-------------------------------------------------------------------------- */
extern int acpi_specific_hotkey_enabled;
#endif /*__ACPI_DRIVERS_H__*/
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