ACPI: thinkpad-acpi: add bluetooth and WWAN rfkill support
Add a read/write rfkill interface to the bluetooth radio switch on the
bluetooth submodule, and one for the wireless wan radio switch to the wan
submodule.
Since rfkill does care for when a switch changes state, use WLSW
notifications to also check if the WWAN or Bluetooth switches did not
change state (due to them being slaves of WLSW in firmware/hardware, but
that reality not being always properly exported by the thinkpad firmware).
Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: Ivo van Doorn <IvDoorn@gmail.com>
Cc: John W. Linville <linville@tuxdriver.com>
diff --git a/Documentation/laptops/thinkpad-acpi.txt b/Documentation/laptops/thinkpad-acpi.txt
index 64b3f14..1c1c021 100644
--- a/Documentation/laptops/thinkpad-acpi.txt
+++ b/Documentation/laptops/thinkpad-acpi.txt
@@ -621,7 +621,8 @@
---------
procfs: /proc/acpi/ibm/bluetooth
-sysfs device attribute: bluetooth_enable
+sysfs device attribute: bluetooth_enable (deprecated)
+sysfs rfkill class: switch "tpacpi_bluetooth_sw"
This feature shows the presence and current state of a ThinkPad
Bluetooth device in the internal ThinkPad CDC slot.
@@ -643,8 +644,12 @@
0: disables Bluetooth / Bluetooth is disabled
1: enables Bluetooth / Bluetooth is enabled.
- Note: this interface will be probably be superseded by the
- generic rfkill class, so it is NOT to be considered stable yet.
+ Note: this interface has been superseded by the generic rfkill
+ class. It has been deprecated, and it will be removed in year
+ 2010.
+
+ rfkill controller switch "tpacpi_bluetooth_sw": refer to
+ Documentation/rfkill.txt for details.
Video output control -- /proc/acpi/ibm/video
--------------------------------------------
@@ -1374,7 +1379,8 @@
-----------------
procfs: /proc/acpi/ibm/wan
-sysfs device attribute: wwan_enable
+sysfs device attribute: wwan_enable (deprecated)
+sysfs rfkill class: switch "tpacpi_wwan_sw"
This feature is marked EXPERIMENTAL because the implementation
directly accesses hardware registers and may not work as expected. USE
@@ -1404,8 +1410,12 @@
0: disables WWAN card / WWAN card is disabled
1: enables WWAN card / WWAN card is enabled.
- Note: this interface will be probably be superseded by the
- generic rfkill class, so it is NOT to be considered stable yet.
+ Note: this interface has been superseded by the generic rfkill
+ class. It has been deprecated, and it will be removed in year
+ 2010.
+
+ rfkill controller switch "tpacpi_wwan_sw": refer to
+ Documentation/rfkill.txt for details.
Multiple Commands, Module Parameters
------------------------------------