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

	  Note that this is an ref. implementation only.  It may or may not work

	  for your integrated video device.

	  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

config ACPI_FAN

	tristate "Fan"

	tristate "Fan"

	depends on !IA64_SGI_SN

	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_EC)		+= ec.o

obj-$(CONFIG_ACPI_FAN)		+= fan.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_PCI)		+= pci_root.o pci_link.o pci_irq.o pci_bind.o

obj-$(CONFIG_ACPI_POWER)	+= power.o

obj-$(CONFIG_ACPI_POWER)	+= power.o

obj-$(CONFIG_ACPI_PROCESSOR)	+= processor.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)

	if (acpi_disabled)

		return -ENODEV;

		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);

	asus_proc_dir = proc_mkdir(PROC_ASUS, acpi_root_dir);

	if (!asus_proc_dir) {

	if (!asus_proc_dir) {

		printk(KERN_ERR "Asus ACPI: Unable to create /proc entry\n");

		printk(KERN_ERR "Asus ACPI: Unable to create /proc entry\n");

drivers/acpi/hotkey.c

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