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authorCarlos Corbacho <carlos@strangeworlds.co.uk>2008-02-08 00:36:49 -0500
committerLen Brown <len.brown@intel.com>2008-02-08 00:36:49 -0500
commit20b4514799ebcfb04b45537e90e421cb73fd0cc9 (patch)
tree40034e54acc85e95a4afd4bc5f3dddead4340185 /drivers/acpi
parent543a956140e1f57331c0e528d2367106057aeca0 (diff)
ACPI: WMI: Improve Kconfig description
As Pavel Machek has pointed out, the Kconfig entry for WMI is pretty non-descriptive. Rewrite it so that it explains what ACPI-WMI is, and why anyone would want to enable it. Many thanks to Ray Lee for ideas on this. Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk> CC: Pavel Machek <pavel@ucw.cz> CC: Ray Lee <ray-lk@madrabbit.org> Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'drivers/acpi')
-rw-r--r--drivers/acpi/Kconfig19
1 files changed, 15 insertions, 4 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index 65da19bd0bee..f688c214be0c 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -207,11 +207,22 @@ config ACPI_WMI
depends on X86
depends on EXPERIMENTAL
help
- This driver adds support for the ACPI-WMI mapper device (PNP0C14)
- found on some systems.
+ This driver adds support for the ACPI-WMI (Windows Management
+ Instrumentation) mapper device (PNP0C14) found on some systems.
- NOTE: You will need another driver or userspace application on top of
- this to actually use anything defined in the ACPI-WMI mapper.
+ ACPI-WMI is a proprietary extension to ACPI to expose parts of the
+ ACPI firmware to userspace - this is done through various vendor
+ defined methods and data blocks in a PNP0C14 device, which are then
+ made available for userspace to call.
+
+ The implementation of this in Linux currently only exposes this to
+ other kernel space drivers.
+
+ This driver is a required dependency to build the firmware specific
+ drivers needed on many machines, including Acer and HP laptops.
+
+ It is safe to enable this driver even if your DSDT doesn't define
+ any ACPI-WMI devices.
config ACPI_ASUS
tristate "ASUS/Medion Laptop Extras"