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, whichever is loaded first shall be used. 27 28 The ACPI SourceForge project contains the latest source code, 29 documentation, tools, mailing list subscription, and other 30 information. This project is available at: 31 <http://sourceforge.net/projects/acpi> 32 33 Linux support for ACPI is based on Intel Corporation's ACPI 34 Component Architecture (ACPI CA). For more information see: 35 <http://developer.intel.com/technology/iapc/acpi> 36 37 ACPI is an open industry specification co-developed by Compaq, 38 Intel, Microsoft, Phoenix, and Toshiba. The specification is 39 available at: 40 <http://www.acpi.info> 41 42if ACPI 43 44config ACPI_SLEEP 45 bool 46 depends on SUSPEND || HIBERNATION 47 default y 48 49config ACPI_PROCFS 50 bool "Deprecated /proc/acpi files" 51 depends on PROC_FS 52 ---help--- 53 For backwards compatibility, this option allows 54 deprecated /proc/acpi/ files to exist, even when 55 they have been replaced by functions in /sys. 56 The deprecated files (and their replacements) include: 57 58 /proc/acpi/sleep (/sys/power/state) 59 /proc/acpi/info (/sys/modules/acpi/parameters/acpica_version) 60 /proc/acpi/dsdt (/sys/firmware/acpi/tables/DSDT) 61 /proc/acpi/fadt (/sys/firmware/acpi/tables/FACP) 62 /proc/acpi/debug_layer (/sys/module/acpi/parameters/debug_layer) 63 /proc/acpi/debug_level (/sys/module/acpi/parameters/debug_level) 64 65 This option has no effect on /proc/acpi/ files 66 and functions which do not yet exist in /sys. 67 68 Say N to delete /proc/acpi/ files that have moved to /sys/ 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, acpi, typically read /proc/acpi/event 98 and handled all ACPI sub-system generated events. 99 100 These events are now delivered to user-space via 101 either 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 adds support for 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 119config ACPI_BATTERY 120 tristate "Battery" 121 depends on X86 122 default y 123 help 124 This driver adds support for battery information through 125 /proc/acpi/battery. If you have a mobile system with a battery, 126 say Y. 127 128config ACPI_BUTTON 129 tristate "Button" 130 depends on INPUT 131 default y 132 help 133 This driver handles events on the power, sleep and lid buttons. 134 A daemon reads /proc/acpi/event and perform user-defined actions 135 such as shutting down the system. This is necessary for 136 software controlled poweroff. 137 138config ACPI_VIDEO 139 tristate "Video" 140 depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL 141 depends on INPUT 142 select THERMAL 143 help 144 This driver implement the ACPI Extensions For Display Adapters 145 for integrated graphics devices on motherboard, as specified in 146 ACPI 2.0 Specification, Appendix B, allowing to perform some basic 147 control like defining the video POST device, retrieving EDID information 148 or to setup a video output, etc. 149 Note that this is an ref. implementation only. It may or may not work 150 for your integrated video device. 151 152config ACPI_FAN 153 tristate "Fan" 154 select THERMAL 155 default y 156 help 157 This driver adds support for ACPI fan devices, allowing user-mode 158 applications to perform basic fan control (on, off, status). 159 160config ACPI_DOCK 161 bool "Dock" 162 depends on EXPERIMENTAL 163 help 164 This driver adds support for ACPI controlled docking stations and removable 165 drive bays such as the IBM ultrabay or the Dell Module Bay. 166 167config ACPI_PROCESSOR 168 tristate "Processor" 169 select THERMAL 170 default y 171 help 172 This driver installs ACPI as the idle handler for Linux, and uses 173 ACPI C2 and C3 processor states to save power, on systems that 174 support it. It is required by several flavors of cpufreq 175 Performance-state drivers. 176 177config ACPI_HOTPLUG_CPU 178 bool 179 depends on ACPI_PROCESSOR && HOTPLUG_CPU 180 select ACPI_CONTAINER 181 default y 182 183config ACPI_THERMAL 184 tristate "Thermal Zone" 185 depends on ACPI_PROCESSOR 186 select THERMAL 187 default y 188 help 189 This driver adds support for ACPI thermal zones. Most mobile and 190 some desktop systems support ACPI thermal zones. It is HIGHLY 191 recommended that this option be enabled, as your processor(s) 192 may be damaged without it. 193 194config ACPI_NUMA 195 bool "NUMA support" 196 depends on NUMA 197 depends on (X86 || IA64) 198 default y if IA64_GENERIC || IA64_SGI_SN2 199 200config ACPI_CUSTOM_DSDT_FILE 201 string "Custom DSDT Table file to include" 202 default "" 203 depends on !STANDALONE 204 help 205 This option supports a custom DSDT by linking it into the kernel. 206 See Documentation/acpi/dsdt-override.txt 207 208 Enter the full path name to the file which includes the AmlCode 209 declaration. 210 211 If unsure, don't enter a file name. 212 213config ACPI_CUSTOM_DSDT 214 bool 215 default ACPI_CUSTOM_DSDT_FILE != "" 216 217config ACPI_BLACKLIST_YEAR 218 int "Disable ACPI for systems before Jan 1st this year" if X86_32 219 default 0 220 help 221 enter a 4-digit year, eg. 2001 to disable ACPI by default 222 on platforms with DMI BIOS date before January 1st that year. 223 "acpi=force" can be used to override this mechanism. 224 225 Enter 0 to disable this mechanism and allow ACPI to 226 run by default no matter what the year. (default) 227 228config ACPI_DEBUG 229 bool "Debug Statements" 230 default n 231 help 232 The ACPI subsystem can produce debug output. Saying Y enables this 233 output and increases the kernel size by around 50K. 234 235 Use the acpi.debug_layer and acpi.debug_level kernel command-line 236 parameters documented in Documentation/acpi/debug.txt and 237 Documentation/kernel-parameters.txt to control the type and 238 amount of debug output. 239 240config ACPI_DEBUG_FUNC_TRACE 241 bool "Additionally enable ACPI function tracing" 242 default n 243 depends on ACPI_DEBUG 244 help 245 ACPI Debug Statements slow down ACPI processing. Function trace 246 is about half of the penalty and is rarely useful. 247 248config ACPI_PCI_SLOT 249 tristate "PCI slot detection driver" 250 default n 251 help 252 This driver will attempt to discover all PCI slots in your system, 253 and creates entries in /sys/bus/pci/slots/. This feature can 254 help you correlate PCI bus addresses with the physical geography 255 of your slots. If you are unsure, say N. 256 257config ACPI_SYSTEM 258 bool 259 default y 260 help 261 This driver will enable your system to shut down using ACPI, and 262 dump your ACPI DSDT table using /proc/acpi/dsdt. 263 264config X86_PM_TIMER 265 bool "Power Management Timer Support" if EMBEDDED 266 depends on X86 267 default y 268 help 269 The Power Management Timer is available on all ACPI-capable, 270 in most cases even if ACPI is unusable or blacklisted. 271 272 This timing source is not affected by power management features 273 like aggressive processor idling, throttling, frequency and/or 274 voltage scaling, unlike the commonly used Time Stamp Counter 275 (TSC) timing source. 276 277 You should nearly always say Y here because many modern 278 systems require this timer. 279 280config ACPI_CONTAINER 281 tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)" 282 depends on EXPERIMENTAL 283 default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) 284 ---help--- 285 This allows _physical_ insertion and removal of CPUs and memory. 286 This can be useful, for example, on NUMA machines that support 287 ACPI based physical hotplug of nodes, or non-NUMA machines that 288 support physical cpu/memory hot-plug. 289 290 If one selects "m", this driver can be loaded with 291 "modprobe container". 292 293config ACPI_HOTPLUG_MEMORY 294 tristate "Memory Hotplug" 295 depends on MEMORY_HOTPLUG 296 default n 297 help 298 This driver adds supports for ACPI Memory Hotplug. This driver 299 provides support for fielding notifications on ACPI memory 300 devices (PNP0C80) which represent memory ranges that may be 301 onlined or offlined during runtime. 302 303 Enabling this driver assumes that your platform hardware 304 and firmware have support for hot-plugging physical memory. If 305 your system does not support physically adding or ripping out 306 memory DIMMs at some platform defined granularity (individually 307 or as a bank) at runtime, then you need not enable this driver. 308 309 If one selects "m," this driver can be loaded using the following 310 command: 311 $>modprobe acpi_memhotplug 312 313config ACPI_SBS 314 tristate "Smart Battery System" 315 depends on X86 316 help 317 This driver adds support for the Smart Battery System, another 318 type of access to battery information, found on some laptops. 319 320endif # ACPI 321