ideapad: add backlight driver
authorIke Panhc <ike.pan@canonical.com>
Thu, 30 Jun 2011 11:50:52 +0000 (19:50 +0800)
committerMatthew Garrett <mjg@redhat.com>
Fri, 5 Aug 2011 18:45:45 +0000 (14:45 -0400)
commita4ecbb8ae7be16497db2f984ee7a3ffec0f164c3
treea35d723223e7144f8b828b3e5be48667caad36b9
parenta84511f7fbeb37e26aacb9c72f5a21ffc24e909e
ideapad: add backlight driver

When acpi_backlight=vendor in cmdline or no backlight support in acpi video
device, ideapad-laptop will register backlight device and control brightness
and backlight power via the command in VPC2004.

Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
drivers/platform/x86/ideapad-laptop.c