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