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eeepc-laptop provides a sysfs interface to read and control what it
calls cpufv. When WMI is enabled, the ACPI interface changes slightly
and becames a write-only control with 3 valid values.
Expose cpufv again to allow for user space utils that can extended battery
life noticably and come a little closer to parity with eeepc-laptop.
Write-only is OK for most user space apps because read status was
mostly used to prevent unneeded mode changes. Since this same check
to ignore changes to same mode also exists in the DSDT then it was
wasted ACPI call.
acpi_osi="!Windows 2009" can be used for get back eeepc-laptop's
read support of cpufv for debugging things such as behaviour
during resume.
This patch was tested with EEE PC 1005PE by monitoring powertop output while
writing values of "0", "1", and "2" and by reviewing the decompiled DSDT of
an 1201NL and comparing it to 1005PE's DSDT.
Signed-off-by: Chris Bagwell <chris@cnpbagwell.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
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Added 4 hotkeys using same keymap values as eeepc-latop.
These are mousepad toggle, resolution change, screen off,
and task manager. These were tested on 1005PE and are the
Fn-F3, F4, F7, and F9, respectively.
Also, added a new hot key for power toggles (Fn-Space on 1005PE)
and is meant to drive cpufv interface from userspace.
Signed-off-by: Chris Bagwell <chris@cnpbagwell.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
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drivers/platform/x86/eeepc-wmi.c: In function ‘eeepc_wmi_notify’:
drivers/platform/x86/eeepc-wmi.c:209: warning: ‘new’ may be used uninitialized in this function
drivers/platform/x86/eeepc-wmi.c:209: note: ‘new’ was declared here
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Yong Wang <yong.y.wang@intel.com>
Cc: Corentin Chary <corentincj@iksaif.net>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Tejun Heo <tj@kernel.org>
Cc: platform-driver-x86@vger.kernel.org
Acked-By: Corentin Chary <corentincj@iksaif.net>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
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Add backlight support for WMI based Eee PC laptops.
Signed-off-by: Yong Wang <yong.y.wang@intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Reviewed-by: Corentin Chary <corentincj@iksaif.net>
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Add a platform device and use it as the parent device of all sub-devices.
Signed-off-by: Yong Wang <yong.y.wang@intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Reviewed-by: Corentin Chary <corentincj@iksaif.net>
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Add an eeepc_wmi context structure to manage all the sub-devices
that will be implemented later on. Put input device into it first.
Signed-off-by: Yong Wang <yong.y.wang@intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Reviewed-by: Corentin Chary <corentincj@iksaif.net>
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eeepc-wmi uses kfree() but doesn't include slab.h. Include it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Yong Wang <yong.y.wang@intel.com>
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Add a WMI driver for Eee PC laptops. Currently it only supports hotkeys.
Signed-off-by: Yong Wang <yong.y.wang@intel.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
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