drivers/acpi/Kconfig

   1 #
   2 # ACPI Configuration
   3 #
   4
   5 menuconfig ACPI
   6         bool "ACPI (Advanced Configuration and Power Interface) Support"
   7         depends on !IA64_HP_SIM
   8         depends on IA64 || X86
   9         depends on PCI
  10         depends on PM
  11         select PNP
  12         select CPU_IDLE
  13         default y
  14         help
  15           Advanced Configuration and Power Interface (ACPI) support for
  16           Linux requires an ACPI-compliant platform (hardware/firmware),
  17           and assumes the presence of OS-directed configuration and power
  18           management (OSPM) software.  This option will enlarge your
  19           kernel by about 70K.
  20
  21           Linux ACPI provides a robust functional replacement for several
  22           legacy configuration and power management interfaces, including
  23           the Plug-and-Play BIOS specification (PnP BIOS), the
  24           MultiProcessor Specification (MPS), and the Advanced Power
  25           Management (APM) specification.  If both ACPI and APM support
  26           are configured, ACPI is used.
  27
  28           The project home page for the Linux ACPI subsystem is here:
  29           <http://www.lesswatts.org/projects/acpi/>
  30
  31           Linux support for ACPI is based on Intel Corporation's ACPI
  32           Component Architecture (ACPI CA).  For more information on the
  33           ACPI CA, see:
  34           <http://acpica.org/>
  35
  36           ACPI is an open industry specification co-developed by
  37           Hewlett-Packard, Intel, Microsoft, Phoenix, and Toshiba.
  38           The specification is available at:
  39           <http://www.acpi.info>
  40
  41 if ACPI
  42
  43 config ACPI_SLEEP
  44         bool
  45         depends on SUSPEND || HIBERNATION
  46         default y
  47
  48 config ACPI_PROCFS
  49         bool "Deprecated /proc/acpi files"
  50         depends on PROC_FS
  51         help
  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  54           they have been replaced by functions in /sys.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:
  56
  57           /proc/acpi/sleep (/sys/power/state)
  58           /proc/acpi/info (/sys/module/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)
  63
  64           This option has no effect on /proc/acpi/ files
  65           and functions which do not yet exist in /sys.
  66
  67           Say N to delete /proc/acpi/ files that have moved to /sys/
  68
  69 config ACPI_PROCFS_POWER
  70         bool "Deprecated power /proc/acpi directories"
  71         depends on PROC_FS
  72         default y
  73         help
  74           For backwards compatibility, this option allows
  75           deprecated power /proc/acpi/ directories to exist, even when
  76           they have been replaced by functions in /sys.
  77           The deprecated directories (and their replacements) include:
  78           /proc/acpi/battery/* (/sys/class/power_supply/*)
  79           /proc/acpi/ac_adapter/* (sys/class/power_supply/*)
  80           This option has no effect on /proc/acpi/ directories
  81           and functions, which do not yet exist in /sys
  82
  83           Say N to delete power /proc/acpi/ directories that have moved to /sys/
  84
  85 config ACPI_SYSFS_POWER
  86         bool "Future power /sys interface"
  87         select POWER_SUPPLY
  88         default y
  89         help
  90           Say N to disable power /sys interface
  91
  92 config ACPI_PROC_EVENT
  93         bool "Deprecated /proc/acpi/event support"
  94         depends on PROC_FS
  95         default y
  96         help
  97           A user-space daemon, acpid, typically reads /proc/acpi/event
  98           and handles all ACPI-generated events.
  99
 100           These events are now delivered to user-space either
 101           via the input layer or as netlink events.
 102
 103           This build option enables the old code for legacy
 104           user-space implementation.  After some time, this will
 105           be moved under CONFIG_ACPI_PROCFS, and then deleted.
 106
 107           Say Y here to retain the old behaviour.  Say N if your
 108           user-space is newer than kernel 2.6.23 (September 2007).
 109
 110 config ACPI_AC
 111         tristate "AC Adapter"
 112         depends on X86
 113         default y
 114         help
 115           This driver supports the AC Adapter object, which indicates
 116           whether a system is on AC or not.  If you have a system that can
 117           switch between A/C and battery, say Y.
 118
 119           To compile this driver as a module, choose M here:
 120           the module will be called ac.
 121
 122 config ACPI_BATTERY
 123         tristate "Battery"
 124         depends on X86
 125         default y
 126         help
 127           This driver adds support for battery information through
 128           /proc/acpi/battery. If you have a mobile system with a battery,
 129           say Y.
 130
 131           To compile this driver as a module, choose M here:
 132           the module will be called battery.
 133
 134 config ACPI_BUTTON
 135         tristate "Button"
 136         depends on INPUT
 137         default y
 138         help
 139           This driver handles events on the power, sleep, and lid buttons.
 140           A daemon reads /proc/acpi/event and perform user-defined actions
 141           such as shutting down the system.  This is necessary for
 142           software-controlled poweroff.
 143
 144           To compile this driver as a module, choose M here:
 145           the module will be called button.
 146
 147 config ACPI_VIDEO
 148         tristate "Video"
 149         depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL
 150         depends on INPUT
 151         select THERMAL
 152         help
 153           This driver implements the ACPI Extensions For Display Adapters
 154           for integrated graphics devices on motherboard, as specified in
 155           ACPI 2.0 Specification, Appendix B.  This supports basic operations
 156           such as defining the video POST device, retrieving EDID information,
 157           and setting up a video output.
 158
 159           To compile this driver as a module, choose M here:
 160           the module will be called video.
 161
 162 config ACPI_FAN
 163         tristate "Fan"
 164         select THERMAL
 165         default y
 166         help
 167           This driver supports ACPI fan devices, allowing user-mode
 168           applications to perform basic fan control (on, off, status).
 169
 170           To compile this driver as a module, choose M here:
 171           the module will be called fan.
 172
 173 config ACPI_DOCK
 174         bool "Dock"
 175         depends on EXPERIMENTAL
 176         help
 177           This driver supports ACPI-controlled docking stations and removable
 178           drive bays such as the IBM Ultrabay and the Dell Module Bay.
 179
 180 config ACPI_PROCESSOR
 181         tristate "Processor"
 182         select THERMAL
 183         default y
 184         help
 185           This driver installs ACPI as the idle handler for Linux and uses
 186           ACPI C2 and C3 processor states to save power on systems that
 187           support it.  It is required by several flavors of cpufreq
 188           performance-state drivers.
 189
 190           To compile this driver as a module, choose M here:
 191           the module will be called processor.
 192
 193 config ACPI_HOTPLUG_CPU
 194         bool
 195         depends on ACPI_PROCESSOR && HOTPLUG_CPU
 196         select ACPI_CONTAINER
 197         default y
 198
 199 config ACPI_THERMAL
 200         tristate "Thermal Zone"
 201         depends on ACPI_PROCESSOR
 202         select THERMAL
 203         default y
 204         help
 205           This driver supports ACPI thermal zones.  Most mobile and
 206           some desktop systems support ACPI thermal zones.  It is HIGHLY
 207           recommended that this option be enabled, as your processor(s)
 208           may be damaged without it.
 209
 210           To compile this driver as a module, choose M here:
 211           the module will be called thermal.
 212
 213 config ACPI_NUMA
 214         bool "NUMA support"
 215         depends on NUMA
 216         depends on (X86 || IA64)
 217         default y if IA64_GENERIC || IA64_SGI_SN2
 218
 219 config ACPI_CUSTOM_DSDT_FILE
 220         string "Custom DSDT Table file to include"
 221         default ""
 222         depends on !STANDALONE
 223         help
 224           This option supports a custom DSDT by linking it into the kernel.
 225           See Documentation/acpi/dsdt-override.txt
 226
 227           Enter the full path name to the file which includes the AmlCode
 228           declaration.
 229
 230           If unsure, don't enter a file name.
 231
 232 config ACPI_CUSTOM_DSDT
 233         bool
 234         default ACPI_CUSTOM_DSDT_FILE != ""
 235
 236 config ACPI_BLACKLIST_YEAR
 237         int "Disable ACPI for systems before Jan 1st this year" if X86_32
 238         default 0
 239         help
 240           Enter a 4-digit year, e.g., 2001, to disable ACPI by default
 241           on platforms with DMI BIOS date before January 1st that year.
 242           "acpi=force" can be used to override this mechanism.
 243
 244           Enter 0 to disable this mechanism and allow ACPI to
 245           run by default no matter what the year.  (default)
 246
 247 config ACPI_DEBUG
 248         bool "Debug Statements"
 249         default n
 250         help
 251           The ACPI subsystem can produce debug output.  Saying Y enables this
 252           output and increases the kernel size by around 50K.
 253
 254           Use the acpi.debug_layer and acpi.debug_level kernel command-line
 255           parameters documented in Documentation/acpi/debug.txt and
 256           Documentation/kernel-parameters.txt to control the type and
 257           amount of debug output.
 258
 259 config ACPI_DEBUG_FUNC_TRACE
 260         bool "Additionally enable ACPI function tracing"
 261         default n
 262         depends on ACPI_DEBUG
 263         help
 264           ACPI Debug Statements slow down ACPI processing. Function trace
 265           is about half of the penalty and is rarely useful.
 266
 267 config ACPI_PCI_SLOT
 268         tristate "PCI slot detection driver"
 269         depends on SYSFS
 270         default n
 271         help
 272           This driver creates entries in /sys/bus/pci/slots/ for all PCI
 273           slots in the system.  This can help correlate PCI bus addresses,
 274           i.e., segment/bus/device/function tuples, with physical slots in
 275           the system.  If you are unsure, say N.
 276
 277           To compile this driver as a module, choose M here:
 278           the module will be called pci_slot.
 279
 280 config X86_PM_TIMER
 281         bool "Power Management Timer Support" if EMBEDDED
 282         depends on X86
 283         default y
 284         help
 285           The Power Management Timer is available on all ACPI-capable,
 286           in most cases even if ACPI is unusable or blacklisted.
 287
 288           This timing source is not affected by power management features
 289           like aggressive processor idling, throttling, frequency and/or
 290           voltage scaling, unlike the commonly used Time Stamp Counter
 291           (TSC) timing source.
 292
 293           You should nearly always say Y here because many modern
 294           systems require this timer.
 295
 296 config ACPI_CONTAINER
 297         tristate "Container and Module Devices (EXPERIMENTAL)"
 298         depends on EXPERIMENTAL
 299         default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO)
 300         help
 301           This driver supports ACPI Container and Module devices (IDs
 302           ACPI0004, PNP0A05, and PNP0A06).
 303
 304           This helps support hotplug of nodes, CPUs, and memory.
 305
 306           To compile this driver as a module, choose M here:
 307           the module will be called container.
 308
 309 config ACPI_HOTPLUG_MEMORY
 310         tristate "Memory Hotplug"
 311         depends on MEMORY_HOTPLUG
 312         default n
 313         help
 314           This driver supports ACPI memory hotplug.  The driver
 315           fields notifications on ACPI memory devices (PNP0C80),
 316           which represent memory ranges that may be onlined or
 317           offlined during runtime.
 318
 319           If your hardware and firmware do not support adding or
 320           removing memory devices at runtime, you need not enable
 321           this driver.
 322
 323           To compile this driver as a module, choose M here:
 324           the module will be called acpi_memhotplug.
 325
 326 config ACPI_SBS
 327         tristate "Smart Battery System"
 328         depends on X86
 329         help
 330           This driver supports the Smart Battery System, another
 331           type of access to battery information, found on some laptops.
 332
 333           To compile this driver as a module, choose M here:
 334           the modules will be called sbs and sbshc.
 335
 336 endif   # ACPI