commit f63409ae91ff94e2192dafbeb00c278ba299f80e
author Ike Panhc <ike.pan@canonical.com> Mon Dec 13 18:00:38 2010 +0800
committer Matthew Garrett <mjg@redhat.com> Fri Jan 07 17:03:46 2011 -0500
tree 905c847ca636d8d15ae0fbfd4bde4d587c28ea12
parent c9f718d0c6b4cf8033aa0f5ac892d68ddfb865aa

ideapad: add hotkey support

Hotkey enabled by this patch:
  Fn+F3: Video mode switch
  Fn+F5: software rfkill for wifi

For some ideapad when push Fn+F3, hardware generates Super-P keys, those key
will not be enabled by this patch.

Thanks for Dave Hansen report the problem. If CONFIG_INPUT_SPARSEKMAP is not
set, when building, you will have error message:

  ERROR: "sparse_keymap_setup" [drivers/platform/x86/ideapad-laptop.ko] undefined!
  ERROR: "sparse_keymap_free" [drivers/platform/x86/ideapad-laptop.ko] undefined!
  ERROR: "sparse_keymap_report_event" [drivers/platform/x86/ideapad-laptop.ko] undefined!

To select INPUT_SPARSEKMAP solve this issue.

Ref: http://lkml.org/lkml/2010/12/2/340

Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

drivers/platform/x86/Kconfig

diff --git a/drivers/platform/x86/Kconfig b/drivers/platform/x86/Kconfig
index 4c7f8b9..254c4ef 100644
--- a/drivers/platform/x86/Kconfig
+++ b/drivers/platform/x86/Kconfig
@@ -226,6 +226,7 @@
 	tristate "Lenovo IdeaPad Laptop Extras"
 	depends on ACPI
 	depends on RFKILL
+	select INPUT_SPARSEKMAP
 	help
 	  This is a driver for the rfkill switches on Lenovo IdeaPad netbooks.