ACPI: hotkey: remove driver, per feature-removal-schedule.txt (5ee6edbc) · Commits · e / devices / android_kernel_xiaomi_nabu

Documentation/acpi-hotkey.txt

deleted100644 → 0

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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 dynamically
	created. Please use command "cat /proc/acpi/hotkey/polling_method"
	to retrieve it.

	Note: Use cmdline "acpi_generic_hotkey" to over-ride
	platform-specific with generic driver.

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	@@ -246,29 +246,6 @@ Who: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>

	---------------------------		---------------------------

	<<<<<<< test:Documentation/feature-removal-schedule.txt
	What: ACPI hotkey driver (CONFIG_ACPI_HOTKEY)
	When: 2.6.21
	Why: hotkey.c was an attempt to consolidate multiple drivers that use
	ACPI to implement hotkeys. However, hotkeys are not documented
	in the ACPI specification, so the drivers used undocumented
	vendor-specific hooks and turned out to be more different than
	the same.

	Further, the keys and the features supplied by each platform
	are different, so there will always be a need for
	platform-specific drivers.

	So the new plan is to delete hotkey.c and instead, work on the
	platform specific drivers to try to make them look the same
	to the user when they supply the same features.

	hotkey.c has always depended on CONFIG_EXPERIMENTAL

	Who: Len Brown <len.brown@intel.com>

	---------------------------

	What: /sys/firmware/acpi/namespace		What: /sys/firmware/acpi/namespace
	When: 2.6.21		When: 2.6.21
	Why: The ACPI namespace is effectively the symbol list for		Why: The ACPI namespace is effectively the symbol list for

+0 −9

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	@@ -132,15 +132,6 @@ 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 (EXPERIMENTAL)"
	depends on EXPERIMENTAL
	depends on X86
	default n
	help
	Experimental consolidated hotkey driver.
	If you are unsure, say N.

	config ACPI_FAN		config ACPI_FAN
	tristate "Fan"		tristate "Fan"
	default y		default y

+0 −1

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	@@ -46,7 +46,6 @@ obj-$(CONFIG_ACPI_FAN) += fan.o
	obj-$(CONFIG_ACPI_DOCK) += dock.o		obj-$(CONFIG_ACPI_DOCK) += dock.o
	obj-$(CONFIG_ACPI_BAY) += bay.o		obj-$(CONFIG_ACPI_BAY) += bay.o
	obj-$(CONFIG_ACPI_VIDEO) += video.o		obj-$(CONFIG_ACPI_VIDEO) += video.o
	obj-$(CONFIG_ACPI_HOTKEY) += hotkey.o
	obj-y += pci_root.o pci_link.o pci_irq.o pci_bind.o		obj-y += 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

+0 −4

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	@@ -1365,10 +1365,6 @@ 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");