1# 2# ACPI Configuration 3# 4 5menuconfig 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 41if ACPI 42 43config ACPI_SLEEP 44 bool 45 depends on SUSPEND || HIBERNATION 46 default y 47 48config 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52 For backwards compatibility, this option allows 53 deprecated /proc/acpi/ files to exist, even when 54 they have been replaced by functions in /sys. 55 The deprecated files (and their replacements) include: 56 57 /proc/acpi/sleep (/sys/power/state) 58 /proc/acpi/info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 69config 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 85config 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 92config 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 110config 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 122config 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 134config 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 147config 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 162config 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 173config 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 180config 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 193config ACPI_HOTPLUG_CPU 194 bool 195 depends on ACPI_PROCESSOR && HOTPLUG_CPU 196 select ACPI_CONTAINER 197 default y 198 199config 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 213config 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 219config 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 232config ACPI_CUSTOM_DSDT 233 bool 234 default ACPI_CUSTOM_DSDT_FILE != "" 235 236config 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 247config 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 259config 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 267config ACPI_PCI_SLOT 268 tristate "PCI slot detection driver" 269 default n 270 help 271 This driver creates entries in /sys/bus/pci/slots/ for all PCI 272 slots in the system. This can help correlate PCI bus addresses, 273 i.e., segment/bus/device/function tuples, with physical slots in 274 the system. If you are unsure, say N. 275 276 To compile this driver as a module, choose M here: 277 the module will be called pci_slot. 278 279config X86_PM_TIMER 280 bool "Power Management Timer Support" if EMBEDDED 281 depends on X86 282 default y 283 help 284 The Power Management Timer is available on all ACPI-capable, 285 in most cases even if ACPI is unusable or blacklisted. 286 287 This timing source is not affected by power management features 288 like aggressive processor idling, throttling, frequency and/or 289 voltage scaling, unlike the commonly used Time Stamp Counter 290 (TSC) timing source. 291 292 You should nearly always say Y here because many modern 293 systems require this timer. 294 295config ACPI_CONTAINER 296 tristate "Container and Module Devices (EXPERIMENTAL)" 297 depends on EXPERIMENTAL 298 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) 299 help 300 This driver supports ACPI Container and Module devices (IDs 301 ACPI0004, PNP0A05, and PNP0A06). 302 303 This helps support hotplug of nodes, CPUs, and memory. 304 305 To compile this driver as a module, choose M here: 306 the module will be called container. 307 308config ACPI_HOTPLUG_MEMORY 309 tristate "Memory Hotplug" 310 depends on MEMORY_HOTPLUG 311 default n 312 help 313 This driver supports ACPI memory hotplug. The driver 314 fields notifications on ACPI memory devices (PNP0C80), 315 which represent memory ranges that may be onlined or 316 offlined during runtime. 317 318 If your hardware and firmware do not support adding or 319 removing memory devices at runtime, you need not enable 320 this driver. 321 322 To compile this driver as a module, choose M here: 323 the module will be called acpi_memhotplug. 324 325config ACPI_SBS 326 tristate "Smart Battery System" 327 depends on X86 328 help 329 This driver supports the Smart Battery System, another 330 type of access to battery information, found on some laptops. 331 332 To compile this driver as a module, choose M here: 333 the modules will be called sbs and sbshc. 334 335endif # ACPI 336