6 bool "ACPI (Advanced Configuration and Power Interface) Support"
7 depends on !IA64_HP_SIM
14 Advanced Configuration and Power Interface (ACPI) support for
15 Linux requires an ACPI compliant platform (hardware/firmware),
16 and assumes the presence of OS-directed configuration and power
17 management (OSPM) software. This option will enlarge your
20 Linux ACPI provides a robust functional replacement for several
21 legacy configuration and power management interfaces, including
22 the Plug-and-Play BIOS specification (PnP BIOS), the
23 MultiProcessor Specification (MPS), and the Advanced Power
24 Management (APM) specification. If both ACPI and APM support
25 are configured, whichever is loaded first shall be used.
27 The ACPI SourceForge project contains the latest source code,
28 documentation, tools, mailing list subscription, and other
29 information. This project is available at:
30 <http://sourceforge.net/projects/acpi>
32 Linux support for ACPI is based on Intel Corporation's ACPI
33 Component Architecture (ACPI CA). For more information see:
34 <http://developer.intel.com/technology/iapc/acpi>
36 ACPI is an open industry specification co-developed by Compaq,
37 Intel, Microsoft, Phoenix, and Toshiba. The specification is
39 <http://www.acpi.info>
45 depends on SUSPEND || HIBERNATION
49 bool "Deprecated /proc/acpi files"
52 For backwards compatibility, this option allows
53 deprecated /proc/acpi/ files to exist, even when
54 they have been replaced by functions in /sys.
55 The deprecated files (and their replacements) include:
57 /proc/acpi/sleep (/sys/power/state)
58 /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version)
59 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT)
60 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP)
61 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer)
62 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level)
64 This option has no effect on /proc/acpi/ files
65 and functions which do not yet exist in /sys.
67 Say N to delete /proc/acpi/ files that have moved to /sys/
68 config ACPI_PROCFS_POWER
69 bool "Deprecated power /proc/acpi directories"
73 For backwards compatibility, this option allows
74 deprecated power /proc/acpi/ directories to exist, even when
75 they have been replaced by functions in /sys.
76 The deprecated directories (and their replacements) include:
77 /proc/acpi/battery/* (/sys/class/power_supply/*)
78 /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
79 This option has no effect on /proc/acpi/ directories
80 and functions, which do not yet exist in /sys
82 Say N to delete power /proc/acpi/ directories that have moved to /sys/
84 config ACPI_SYSFS_POWER
85 bool "Future power /sys interface"
89 Say N to disable power /sys interface
91 config ACPI_PROC_EVENT
92 bool "Deprecated /proc/acpi/event support"
96 A user-space daemon, acpi, typically read /proc/acpi/event
97 and handled all ACPI sub-system generated events.
99 These events are now delivered to user-space via
100 either the input layer, or as netlink events.
102 This build option enables the old code for legacy
103 user-space implementation. After some time, this will
104 be moved under CONFIG_ACPI_PROCFS, and then deleted.
106 Say Y here to retain the old behaviour. Say N if your
107 user-space is newer than kernel 2.6.23 (September 2007).
110 tristate "AC Adapter"
114 This driver adds support for the AC Adapter object, which indicates
115 whether a system is on AC, or not. If you have a system that can
116 switch between A/C and battery, say Y.
123 This driver adds support for battery information through
124 /proc/acpi/battery. If you have a mobile system with a battery,
132 This driver handles events on the power, sleep and lid buttons.
133 A daemon reads /proc/acpi/event and perform user-defined actions
134 such as shutting down the system. This is necessary for
135 software controlled poweroff.
139 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
143 This driver implement the ACPI Extensions For Display Adapters
144 for integrated graphics devices on motherboard, as specified in
145 ACPI 2.0 Specification, Appendix B, allowing to perform some basic
146 control like defining the video POST device, retrieving EDID information
147 or to setup a video output, etc.
148 Note that this is an ref. implementation only. It may or may not work
149 for your integrated video device.
156 This driver adds support for ACPI fan devices, allowing user-mode
157 applications to perform basic fan control (on, off, status).
161 depends on EXPERIMENTAL
163 This driver adds support for ACPI controlled docking stations and removable
164 drive bays such as the IBM ultrabay or the Dell Module Bay.
166 config ACPI_PROCESSOR
171 This driver installs ACPI as the idle handler for Linux, and uses
172 ACPI C2 and C3 processor states to save power, on systems that
173 support it. It is required by several flavors of cpufreq
174 Performance-state drivers.
176 config ACPI_HOTPLUG_CPU
178 depends on ACPI_PROCESSOR && HOTPLUG_CPU
179 select ACPI_CONTAINER
183 tristate "Thermal Zone"
184 depends on ACPI_PROCESSOR
188 This driver adds support for ACPI thermal zones. Most mobile and
189 some desktop systems support ACPI thermal zones. It is HIGHLY
190 recommended that this option be enabled, as your processor(s)
191 may be damaged without it.
196 depends on (X86 || IA64)
197 default y if IA64_GENERIC || IA64_SGI_SN2
199 config ACPI_CUSTOM_DSDT_FILE
200 string "Custom DSDT Table file to include"
202 depends on !STANDALONE
204 This option supports a custom DSDT by linking it into the kernel.
205 See Documentation/acpi/dsdt-override.txt
207 Enter the full path name to the file which includes the AmlCode
210 If unsure, don't enter a file name.
212 config ACPI_CUSTOM_DSDT
214 default ACPI_CUSTOM_DSDT_FILE != ""
216 config ACPI_BLACKLIST_YEAR
217 int "Disable ACPI for systems before Jan 1st this year" if X86_32
220 enter a 4-digit year, eg. 2001 to disable ACPI by default
221 on platforms with DMI BIOS date before January 1st that year.
222 "acpi=force" can be used to override this mechanism.
224 Enter 0 to disable this mechanism and allow ACPI to
225 run by default no matter what the year. (default)
228 bool "Debug Statements"
231 The ACPI subsystem can produce debug output. Saying Y enables this
232 output and increases the kernel size by around 50K.
234 Use the acpi.debug_layer and acpi.debug_level kernel command-line
235 parameters documented in Documentation/acpi/debug.txt and
236 Documentation/kernel-parameters.txt to control the type and
237 amount of debug output.
239 config ACPI_DEBUG_FUNC_TRACE
240 bool "Additionally enable ACPI function tracing"
242 depends on ACPI_DEBUG
244 ACPI Debug Statements slow down ACPI processing. Function trace
245 is about half of the penalty and is rarely useful.
248 tristate "PCI slot detection driver"
251 This driver will attempt to discover all PCI slots in your system,
252 and creates entries in /sys/bus/pci/slots/. This feature can
253 help you correlate PCI bus addresses with the physical geography
254 of your slots. If you are unsure, say N.
260 This driver will enable your system to shut down using ACPI, and
261 dump your ACPI DSDT table using /proc/acpi/dsdt.
264 bool "Power Management Timer Support" if EMBEDDED
268 The Power Management Timer is available on all ACPI-capable,
269 in most cases even if ACPI is unusable or blacklisted.
271 This timing source is not affected by power management features
272 like aggressive processor idling, throttling, frequency and/or
273 voltage scaling, unlike the commonly used Time Stamp Counter
276 You should nearly always say Y here because many modern
277 systems require this timer.
279 config ACPI_CONTAINER
280 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)"
281 depends on EXPERIMENTAL
282 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
284 This allows _physical_ insertion and removal of CPUs and memory.
285 This can be useful, for example, on NUMA machines that support
286 ACPI based physical hotplug of nodes, or non-NUMA machines that
287 support physical cpu/memory hot-plug.
289 If one selects "m", this driver can be loaded with
290 "modprobe acpi_container".
292 config ACPI_HOTPLUG_MEMORY
293 tristate "Memory Hotplug"
294 depends on MEMORY_HOTPLUG
297 This driver adds supports for ACPI Memory Hotplug. This driver
298 provides support for fielding notifications on ACPI memory
299 devices (PNP0C80) which represent memory ranges that may be
300 onlined or offlined during runtime.
302 Enabling this driver assumes that your platform hardware
303 and firmware have support for hot-plugging physical memory. If
304 your system does not support physically adding or ripping out
305 memory DIMMs at some platform defined granularity (individually
306 or as a bank) at runtime, then you need not enable this driver.
308 If one selects "m," this driver can be loaded using the following
310 $>modprobe acpi_memhotplug
313 tristate "Smart Battery System"
316 This driver adds support for the Smart Battery System, another
317 type of access to battery information, found on some laptops.