ThinkPad ACPI Extras Driver
- Version 0.14
- April 21st, 2007
+ Version 0.15
+ July 1st, 2007
Borislav Deianov <borislav@users.sf.net>
- Henrique de Moraes Holschuh <hmh@hmh.eng.br>
- http://ibm-acpi.sf.net/
+ Henrique de Moraes Holschuh <hmh@hmh.eng.br>
+ http://ibm-acpi.sf.net/
This is a Linux driver for the IBM and Lenovo ThinkPad laptops. It
The events are available in an input device, with the following id:
Bus: BUS_HOST
- vendor: 0x1014 (PCI_VENDOR_ID_IBM)
+ vendor: 0x1014 (PCI_VENDOR_ID_IBM) or
+ 0x17aa (PCI_VENDOR_ID_LENOVO)
product: 0x5054 ("TP")
version: 0x4101
event code Key Notes
0x1001 0x00 FN+F1 -
-0x1002 0x01 FN+F2 -
+0x1002 0x01 FN+F2 IBM: battery (rare)
+ Lenovo: Screen lock
-0x1003 0x02 FN+F3 Many models always report this
- hot key, even with hot keys
+0x1003 0x02 FN+F3 Many IBM models always report
+ this hot key, even with hot keys
disabled or with Fn+F3 masked
off
+ IBM: screen lock
+ Lenovo: battery
0x1004 0x03 FN+F4 Sleep button (ACPI sleep button
semanthics, i.e. sleep-to-RAM).
and W-WAN card if left in control
of the firmware. Does not affect
the WLAN card.
+ Should be used to turn on/off all
+ radios (bluetooth+W-WAN+WLAN),
+ really.
0x1006 0x05 FN+F6 -
0x1007 0x06 FN+F7 Video output cycle.
Do you feel lucky today?
-0x1008 0x07 FN+F8 -
+0x1008 0x07 FN+F8 IBM: toggle screen expand
+ Lenovo: configure ultranav
+
+0x1009 0x08 FN+F9 -
.. .. ..
0x100B 0x0A FN+F11 -
0x100F 0x0E FN+DELETE -
0x1010 0x0F FN+HOME Brightness up. This key is
- always handled by the firmware,
- even when unmasked. Just leave
- it alone.
-0x1011 0x10 FN+END Brightness down. This key is
- always handled by the firmware,
- even when unmasked. Just leave
- it alone.
+ always handled by the firmware
+ in IBM ThinkPads, even when
+ unmasked. Just leave it alone.
+ For Lenovo ThinkPads with a new
+ BIOS, it has to be handled either
+ by the ACPI OSI, or by userspace.
+0x1011 0x10 FN+END Brightness down. See brightness
+ up for details.
+
0x1012 0x11 FN+PGUP Thinklight toggle. This key is
always handled by the firmware,
even when unmasked.
0x1015 0x14 VOLUME UP Internal mixer volume up. This
key is always handled by the
firmware, even when unmasked.
+ NOTE: Lenovo seems to be changing
+ this.
0x1016 0x15 VOLUME DOWN Internal mixer volume up. This
key is always handled by the
firmware, even when unmasked.
+ NOTE: Lenovo seems to be changing
+ this.
0x1017 0x16 MUTE Mute internal mixer. This
key is always handled by the
firmware, even when unmasked.
procfs: /proc/acpi/ibm/thermal
sysfs device attributes: (hwmon) temp*_input
-Most ThinkPads include six or more separate temperature sensors but
-only expose the CPU temperature through the standard ACPI methods.
-This feature shows readings from up to eight different sensors on older
-ThinkPads, and it has experimental support for up to sixteen different
-sensors on newer ThinkPads.
-
-EXPERIMENTAL: The 16-sensors feature is marked EXPERIMENTAL because the
-implementation directly accesses hardware registers and may not work as
-expected. USE WITH CAUTION! To use this feature, you need to supply the
-experimental=1 parameter when loading the module. When EXPERIMENTAL
-mode is enabled, reading the first 8 sensors on newer ThinkPads will
-also use an new experimental thermal sensor access mode.
+Most ThinkPads include six or more separate temperature sensors but only
+expose the CPU temperature through the standard ACPI methods. This
+feature shows readings from up to eight different sensors on older
+ThinkPads, and up to sixteen different sensors on newer ThinkPads.
For example, on the X40, a typical output may be:
temperatures: 42 42 45 41 36 -128 33 -128
-EXPERIMENTAL: On the T43/p, a typical output may be:
+On the T43/p, a typical output may be:
temperatures: 48 48 36 52 38 -128 31 -128 48 52 48 -128 -128 -128 -128 -128
The mapping of thermal sensors to physical locations varies depending on
The backlight control has eight levels, ranging from 0 to 7. Some of the
levels may not be distinct.
+There are two interfaces to the firmware for brightness control, EC and CMOS.
+To select which one should be used, use the brightness_mode module parameter:
+brightness_mode=1 selects EC mode, brightness_mode=2 selects CMOS mode,
+brightness_mode=3 selects both EC and CMOS. The driver tries to autodetect
+which interface to use.
+
Procfs notes:
The available commands are:
device.
0x000200: Hot key support for 32 hot keys, and radio slider switch
support.
+0x010000: Hot keys are now handled by default over the input
+ layer, the radio switch generates input event EV_RADIO,
+ and the driver enables hot key handling by default in
+ the firmware.
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