Enable Dell All-In-One volume up/down keys

Enable volume up and down hotkeys on WMI events
GUID 284A0E6B-380E-472A-921F-E52786257FB4 and
GUID 02314822-307C-4F66-bf0E-48AEAEB26CC8.

Also works around a firmware bug where the _WED method
should return an integer containing the key code and in fact
the method returns the key code in element zero of a buffer.

BugLink: http://bugs.launchpad.net/bugs/701530
BugLink: http://bugs.launchpad.net/bugs/676997

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 2822d8a8cdd2..f0ef757d9fde 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -101,6 +101,19 @@ config DELL_WMI
           To compile this driver as a module, choose M here: the module will
           be called dell-wmi.
 
+config DELL_WMI_AIO
+        tristate "WMI Hotkeys for Dell All-In-One series"
+        depends on ACPI_WMI
+        depends on INPUT
+        select INPUT_SPARSEKMAP
+        ---help---
+          Say Y here if you want to support WMI-based hotkeys on Dell
+          All-In-One machines.
+
+          To compile this driver as a module, choose M here: the module will
+          be called dell-wmi.
+
+
 config FUJITSU_LAPTOP
         tristate "Fujitsu Laptop Extras"
         depends on ACPI