Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | # |
| 2 | # ACPI Configuration |
| 3 | # |
| 4 | |
Jan Engelhardt | 3f2c48c | 2007-07-03 01:40:59 -0400 | [diff] [blame] | 5 | menuconfig ACPI |
Frans Pop | 355ee5e | 2007-10-29 17:20:38 -0400 | [diff] [blame] | 6 | bool "ACPI (Advanced Configuration and Power Interface) Support" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | depends on !IA64_HP_SIM |
| 8 | depends on IA64 || X86 |
Adrian Bunk | 1300124 | 2006-03-28 17:04:00 -0500 | [diff] [blame] | 9 | depends on PCI |
Andrew Morton | 6796a12 | 2006-12-19 12:56:13 -0800 | [diff] [blame] | 10 | depends on PM |
Len Brown | 243b66e | 2007-02-15 22:34:36 -0500 | [diff] [blame] | 11 | select PNP |
Len Brown | 9fdd54f | 2009-02-06 12:24:17 -0500 | [diff] [blame] | 12 | select CPU_IDLE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Len Brown | 3e11c3c | 2005-05-27 04:53:27 -0400 | [diff] [blame] | 42 | if ACPI |
| 43 | |
Len Brown | 673d5b4 | 2007-07-28 03:33:16 -0400 | [diff] [blame] | 44 | config ACPI_SLEEP |
| 45 | bool |
Rafael J. Wysocki | 5d1e072 | 2008-10-22 14:58:43 -0400 | [diff] [blame] | 46 | depends on SUSPEND || HIBERNATION |
Len Brown | 673d5b4 | 2007-07-28 03:33:16 -0400 | [diff] [blame] | 47 | default y |
| 48 | |
Zhang Rui | b981c59 | 2007-01-29 11:02:30 +0800 | [diff] [blame] | 49 | config ACPI_PROCFS |
Len Brown | fb80471 | 2007-07-24 01:50:46 -0400 | [diff] [blame] | 50 | bool "Deprecated /proc/acpi files" |
| 51 | depends on PROC_FS |
Zhang Rui | b981c59 | 2007-01-29 11:02:30 +0800 | [diff] [blame] | 52 | ---help--- |
Len Brown | fb80471 | 2007-07-24 01:50:46 -0400 | [diff] [blame] | 53 | For backwards compatibility, this option allows |
Rolf Eike Beer | 405bbe9 | 2007-10-20 03:10:57 +0200 | [diff] [blame] | 54 | deprecated /proc/acpi/ files to exist, even when |
Len Brown | fb80471 | 2007-07-24 01:50:46 -0400 | [diff] [blame] | 55 | they have been replaced by functions in /sys. |
| 56 | The deprecated files (and their replacements) include: |
| 57 | |
Len Brown | 43532c8 | 2007-07-24 02:16:50 -0400 | [diff] [blame] | 58 | /proc/acpi/sleep (/sys/power/state) |
Len Brown | fb80471 | 2007-07-24 01:50:46 -0400 | [diff] [blame] | 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/ |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 69 | config ACPI_PROCFS_POWER |
Alan Cox | 9e52797 | 2008-01-03 16:31:42 +0000 | [diff] [blame] | 70 | bool "Deprecated power /proc/acpi directories" |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 71 | depends on PROC_FS |
| 72 | default y |
| 73 | ---help--- |
| 74 | For backwards compatibility, this option allows |
Alan Cox | 9e52797 | 2008-01-03 16:31:42 +0000 | [diff] [blame] | 75 | deprecated power /proc/acpi/ directories to exist, even when |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 76 | they have been replaced by functions in /sys. |
Alan Cox | 9e52797 | 2008-01-03 16:31:42 +0000 | [diff] [blame] | 77 | The deprecated directories (and their replacements) include: |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 78 | /proc/acpi/battery/* (/sys/class/power_supply/*) |
| 79 | /proc/acpi/ac_adapter/* (sys/class/power_supply/*) |
Alan Cox | 9e52797 | 2008-01-03 16:31:42 +0000 | [diff] [blame] | 80 | This option has no effect on /proc/acpi/ directories |
Alexey Starikovskiy | fdcedbb | 2007-11-19 16:33:45 +0300 | [diff] [blame] | 81 | and functions, which do not yet exist in /sys |
Zhang Rui | b981c59 | 2007-01-29 11:02:30 +0800 | [diff] [blame] | 82 | |
Alan Cox | 9e52797 | 2008-01-03 16:31:42 +0000 | [diff] [blame] | 83 | Say N to delete power /proc/acpi/ directories that have moved to /sys/ |
| 84 | |
Alexey Starikovskiy | 97749cd | 2008-01-01 14:27:24 -0500 | [diff] [blame] | 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 |
Alan Cox | 9e52797 | 2008-01-03 16:31:42 +0000 | [diff] [blame] | 91 | |
Len Brown | 14e04fb | 2007-08-23 15:20:26 -0400 | [diff] [blame] | 92 | config ACPI_PROC_EVENT |
| 93 | bool "Deprecated /proc/acpi/event support" |
| 94 | depends on PROC_FS |
Hugh Dickins | 721ebe0 | 2007-08-27 16:04:39 +0100 | [diff] [blame] | 95 | default y |
Len Brown | 14e04fb | 2007-08-23 15:20:26 -0400 | [diff] [blame] | 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 | |
Hugh Dickins | 721ebe0 | 2007-08-27 16:04:39 +0100 | [diff] [blame] | 103 | This build option enables the old code for legacy |
Len Brown | 14e04fb | 2007-08-23 15:20:26 -0400 | [diff] [blame] | 104 | user-space implementation. After some time, this will |
| 105 | be moved under CONFIG_ACPI_PROCFS, and then deleted. |
| 106 | |
Hugh Dickins | 721ebe0 | 2007-08-27 16:04:39 +0100 | [diff] [blame] | 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | config ACPI_AC |
| 111 | tristate "AC Adapter" |
Alexey Starikovskiy | 5527c8b | 2007-10-29 17:08:59 -0400 | [diff] [blame] | 112 | depends on X86 |
Len Brown | 07fefe4 | 2005-08-25 12:22:04 -0400 | [diff] [blame] | 113 | default y |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | help |
| 115 | This driver adds support for the AC Adapter object, which indicates |
Len Brown | 07fefe4 | 2005-08-25 12:22:04 -0400 | [diff] [blame] | 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. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | |
| 119 | config ACPI_BATTERY |
| 120 | tristate "Battery" |
Alexey Starikovskiy | 5527c8b | 2007-10-29 17:08:59 -0400 | [diff] [blame] | 121 | depends on X86 |
Len Brown | 07fefe4 | 2005-08-25 12:22:04 -0400 | [diff] [blame] | 122 | default y |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 128 | config ACPI_BUTTON |
| 129 | tristate "Button" |
Dmitry Torokhov | c0968f0 | 2006-11-09 00:40:13 -0500 | [diff] [blame] | 130 | depends on INPUT |
Len Brown | 07fefe4 | 2005-08-25 12:22:04 -0400 | [diff] [blame] | 131 | default y |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | help |
Len Brown | 07fefe4 | 2005-08-25 12:22:04 -0400 | [diff] [blame] | 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. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 137 | |
| 138 | config ACPI_VIDEO |
| 139 | tristate "Video" |
Luming Yu | 23b0f01 | 2007-05-09 21:07:05 +0800 | [diff] [blame] | 140 | depends on X86 && BACKLIGHT_CLASS_DEVICE && VIDEO_OUTPUT_CONTROL |
Andreas Herrmann | 03e2bf2 | 2007-09-17 23:41:05 +0200 | [diff] [blame] | 141 | depends on INPUT |
Zhang Rui | 63c4ec9 | 2008-04-21 16:07:13 +0800 | [diff] [blame] | 142 | select THERMAL |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 152 | config ACPI_FAN |
| 153 | tristate "Fan" |
Zhang Rui | 63c4ec9 | 2008-04-21 16:07:13 +0800 | [diff] [blame] | 154 | select THERMAL |
Len Brown | 07fefe4 | 2005-08-25 12:22:04 -0400 | [diff] [blame] | 155 | default y |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Len Brown | c8f7a62 | 2006-07-09 17:22:28 -0400 | [diff] [blame] | 160 | config ACPI_DOCK |
Shaohua Li | 898b054 | 2008-09-27 11:10:28 +0800 | [diff] [blame] | 161 | bool "Dock" |
Len Brown | 8d7bff6 | 2006-07-09 22:09:57 -0400 | [diff] [blame] | 162 | depends on EXPERIMENTAL |
Len Brown | c8f7a62 | 2006-07-09 17:22:28 -0400 | [diff] [blame] | 163 | help |
Shaohua Li | 4be9309 | 2008-08-28 10:06:44 +0800 | [diff] [blame] | 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. |
Kristen Carlson Accardi | 01b57e7 | 2006-10-20 14:30:25 -0700 | [diff] [blame] | 166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | config ACPI_PROCESSOR |
| 168 | tristate "Processor" |
Zhang Rui | 63c4ec9 | 2008-04-21 16:07:13 +0800 | [diff] [blame] | 169 | select THERMAL |
Len Brown | 07fefe4 | 2005-08-25 12:22:04 -0400 | [diff] [blame] | 170 | default y |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Len Brown | 07fefe4 | 2005-08-25 12:22:04 -0400 | [diff] [blame] | 174 | support it. It is required by several flavors of cpufreq |
| 175 | Performance-state drivers. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
| 177 | config ACPI_HOTPLUG_CPU |
Adrian Bunk | cbfc1ba | 2005-07-30 04:18:00 -0400 | [diff] [blame] | 178 | bool |
| 179 | depends on ACPI_PROCESSOR && HOTPLUG_CPU |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 180 | select ACPI_CONTAINER |
Adrian Bunk | cbfc1ba | 2005-07-30 04:18:00 -0400 | [diff] [blame] | 181 | default y |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
| 183 | config ACPI_THERMAL |
| 184 | tristate "Thermal Zone" |
| 185 | depends on ACPI_PROCESSOR |
Zhang Rui | 3f655ef | 2008-01-17 15:51:11 +0800 | [diff] [blame] | 186 | select THERMAL |
Len Brown | 07fefe4 | 2005-08-25 12:22:04 -0400 | [diff] [blame] | 187 | default y |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 194 | config ACPI_NUMA |
| 195 | bool "NUMA support" |
| 196 | depends on NUMA |
Yasunori Goto | 762834e | 2006-06-23 02:03:19 -0700 | [diff] [blame] | 197 | depends on (X86 || IA64) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 198 | default y if IA64_GENERIC || IA64_SGI_SN2 |
| 199 | |
Randy Dunlap | 7ce9573 | 2008-02-22 11:25:04 -0800 | [diff] [blame] | 200 | config ACPI_CUSTOM_DSDT_FILE |
| 201 | string "Custom DSDT Table file to include" |
| 202 | default "" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | depends on !STANDALONE |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 204 | help |
Len Brown | d89e9d6 | 2008-02-06 19:28:02 -0500 | [diff] [blame] | 205 | This option supports a custom DSDT by linking it into the kernel. |
| 206 | See Documentation/acpi/dsdt-override.txt |
| 207 | |
Uwe Zeisberger | c30fe7f | 2006-03-24 18:23:14 +0100 | [diff] [blame] | 208 | Enter the full path name to the file which includes the AmlCode |
| 209 | declaration. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | |
Randy Dunlap | 7ce9573 | 2008-02-22 11:25:04 -0800 | [diff] [blame] | 211 | If unsure, don't enter a file name. |
| 212 | |
| 213 | config ACPI_CUSTOM_DSDT |
| 214 | bool |
| 215 | default ACPI_CUSTOM_DSDT_FILE != "" |
| 216 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 217 | config ACPI_BLACKLIST_YEAR |
Andi Kleen | 2eb1bdb | 2006-02-26 04:18:43 +0100 | [diff] [blame] | 218 | int "Disable ACPI for systems before Jan 1st this year" if X86_32 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 228 | config ACPI_DEBUG |
| 229 | bool "Debug Statements" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 230 | default n |
| 231 | help |
Bjorn Helgaas | a0d84a9 | 2008-11-07 16:58:05 -0700 | [diff] [blame] | 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. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | |
Thomas Renninger | 798d9103 | 2007-05-31 17:20:39 +0200 | [diff] [blame] | 240 | config 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 | |
Alex Chiang | 8344b56 | 2008-06-10 15:30:42 -0600 | [diff] [blame] | 248 | config 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 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | config X86_PM_TIMER |
Andi Kleen | e78256b | 2006-02-26 04:18:37 +0100 | [diff] [blame] | 258 | bool "Power Management Timer Support" if EMBEDDED |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 259 | depends on X86 |
Len Brown | 07fefe4 | 2005-08-25 12:22:04 -0400 | [diff] [blame] | 260 | default y |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 261 | help |
| 262 | The Power Management Timer is available on all ACPI-capable, |
| 263 | in most cases even if ACPI is unusable or blacklisted. |
| 264 | |
Matt LaPlante | c73a668 | 2006-10-03 22:24:43 +0200 | [diff] [blame] | 265 | This timing source is not affected by power management features |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | like aggressive processor idling, throttling, frequency and/or |
| 267 | voltage scaling, unlike the commonly used Time Stamp Counter |
| 268 | (TSC) timing source. |
| 269 | |
Andi Kleen | e78256b | 2006-02-26 04:18:37 +0100 | [diff] [blame] | 270 | You should nearly always say Y here because many modern |
| 271 | systems require this timer. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | |
| 273 | config ACPI_CONTAINER |
| 274 | tristate "ACPI0004,PNP0A05 and PNP0A06 Container Driver (EXPERIMENTAL)" |
| 275 | depends on EXPERIMENTAL |
| 276 | default (ACPI_HOTPLUG_MEMORY || ACPI_HOTPLUG_CPU || ACPI_HOTPLUG_IO) |
| 277 | ---help--- |
Keiichiro Tokunaga | 45b1b19 | 2005-03-02 00:00:00 -0500 | [diff] [blame] | 278 | This allows _physical_ insertion and removal of CPUs and memory. |
| 279 | This can be useful, for example, on NUMA machines that support |
| 280 | ACPI based physical hotplug of nodes, or non-NUMA machines that |
| 281 | support physical cpu/memory hot-plug. |
| 282 | |
| 283 | If one selects "m", this driver can be loaded with |
Thierry Vignaud | 370154b | 2009-02-07 01:12:19 -0500 | [diff] [blame] | 284 | "modprobe container". |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 285 | |
| 286 | config ACPI_HOTPLUG_MEMORY |
| 287 | tristate "Memory Hotplug" |
Yasunori Goto | bc02af9 | 2006-06-27 02:53:30 -0700 | [diff] [blame] | 288 | depends on MEMORY_HOTPLUG |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 289 | default n |
| 290 | help |
| 291 | This driver adds supports for ACPI Memory Hotplug. This driver |
| 292 | provides support for fielding notifications on ACPI memory |
| 293 | devices (PNP0C80) which represent memory ranges that may be |
| 294 | onlined or offlined during runtime. |
| 295 | |
| 296 | Enabling this driver assumes that your platform hardware |
| 297 | and firmware have support for hot-plugging physical memory. If |
| 298 | your system does not support physically adding or ripping out |
Matt LaPlante | c73a668 | 2006-10-03 22:24:43 +0200 | [diff] [blame] | 299 | memory DIMMs at some platform defined granularity (individually |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | or as a bank) at runtime, then you need not enable this driver. |
| 301 | |
| 302 | If one selects "m," this driver can be loaded using the following |
| 303 | command: |
| 304 | $>modprobe acpi_memhotplug |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 305 | |
| 306 | config ACPI_SBS |
Alexey Starikovskiy | 94f6c08 | 2007-09-26 19:43:48 +0400 | [diff] [blame] | 307 | tristate "Smart Battery System" |
Vladimir Lebedev | b4150fc | 2007-03-19 17:45:50 +0300 | [diff] [blame] | 308 | depends on X86 |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 309 | help |
Alexey Starikovskiy | 94f6c08 | 2007-09-26 19:43:48 +0400 | [diff] [blame] | 310 | This driver adds support for the Smart Battery System, another |
| 311 | type of access to battery information, found on some laptops. |
Rich Townsend | 3f86b83 | 2006-07-01 11:36:54 -0400 | [diff] [blame] | 312 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 313 | endif # ACPI |