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

[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=3887



Signed-off-by: default avatarLuming Yu <luming.yu@intel.com>
Signed-off-by: default avatarLen Brown <len.brown@intel.com>
parent d58da590

Documentation/acpi-hotkey.txt

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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.

drivers/acpi/Kconfig

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@@ -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

drivers/acpi/Makefile

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@@ -43,6 +43,7 @@ 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_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

drivers/acpi/asus_acpi.c

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@@ -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");

drivers/acpi/hotkey.c

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File added.

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