Drivers

Information on Thinkpad Drivers.

Connectivity
Hardware function	relevant drivers
Bluetooth	ibm-acpi (enabling/disabling bluetooth)
Ethernet	see Ethernet Controllers
Modem	see Modem Devices
WAN
Wireless LAN	hostap (Intersil Prism2/2.5/3 Driver for Wifi) ipw2100 (Intel PRO/Wireless 2100 Driver for WiFi) ipw2200 (Intel PRO/Wireless 2200 Driver for Wifi) madwifi (Multiband Atheros Driver for WiFi) see Wireless Network Adapters
Display
Hardware function	relevant drivers
Display brightness	ibm-acpi (ACPI based LCD brightness control) tpctl
Video drivers	fglrx (ATI driver for Radeon, FireGL and Mobility boards) savage (Driver for Savage chips found in some Thinkpads) R128 (Driver for Rage128 chips found in some Thinkpads) R300 (Driver for ATI boards with R300 chips like Radeon 9500 and the FireGL series)
Video Output switching	ibm-acpi (ACPI based video switching for X series models)
Drives
Hardware function	relevant drivers
CD/DVD Speed control	tp_smapi (Extended battery information and control)
UltraBay Hot-Swapping	ibm-acpi
Input
Hardware function	relevant drivers
TrackPoint	trackpoint (TrackPoint Linux kernel driver)
Touchpad	Synaptics TouchPad driver (Touchpad driver for X.org/XFree86) tpconfig (Touchpad driver)
TouchScreen	MicroTouch TouchBase Driver
PowerManagement
Hardware function	relevant drivers
ACPI	ibm-acpi (IBM ThinkPad ACPI Extras Driver) thinkpad-acpi (IBM ThinkPad Fn+Fx key driver)
APM	thinkpad & tpctl (ThinkPad configuration programs that are compatible with APM)
Battery management	tp_smapi (Extended battery information and control)
Battery status	tp_smapi (Extended battery information and control)
Security & Safety
Hardware function	relevant drivers
TCP/TCPA (Embedded Security Subsystem)	tpm (GPL driver for the TCPA chip in newer ThinkPads) tpmdd (another driver for the TCPA chip in newer ThinkPads)
Harddisk protection (APS)	HDAPS
Additional Hardware
Hardware function	relevant drivers
UltraPort Camera	IBM UltraCam II driver