Remove the status variable from hp_wmi_perform_query which holds the
return value from wmi_evaluate_method(). It is never checked as the
function bails out if the output buffer hasn't been allocated which
indicates the call failed.
Signed-off-by: NAnssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Check BIOS provided return value code in hp_wmi_perform_query and print
a warning on error. Printing is suppressed for HPWMI_RET_UNKNOWN_CMDTYPE
which is returned when the command type is unsupported.
Signed-off-by: NAnssi Hannula <anssi.hannula@iki.fi>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Reasonably recent Vaios have a 0x12f or 0x137 handler that exposes a
fine lid backlight regulation with values ranging from 0 to 255.
The patch is based on findings and code from Javier Achirica
<achirica@gmail.com> and Marco Chiappero <marco@absence.it>
Signed-off-by: NMattia Dongili <malattia@linux.it>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Recent Vaios have the opportunity to control the keyboard backlight via
ACPI calls to the SNC device.
Introduce two module parameters to control how keyboard backlight should
be set at module loading (default to on and with 10 seconds timeout).
Tested-by: NMarco Chiappero <marco@absence.it>
Signed-off-by: NMattia Dongili <malattia@linux.it>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Avoid calling into acpi each time we need to lookup a method handle
and report the available handles to ease collection of information when
debugging issues. Also move initialization of the platform driver
earlier to allow adding files from other setup functions.
Signed-off-by: NMattia Dongili <malattia@linux.it>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NMattia Dongili <malattia@linux.it>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NMattia Dongili <malattia@linux.it>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

There is not much use for these events in userspace and handling the
events themselves seems to get in the way of the actual activation of
the rf devices. The SNC device doesn't expose them already.
https://bugzilla.kernel.org/show_bug.cgi?id=15303Signed-off-by: NMattia Dongili <malattia@linux.it>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NMattia Dongili <malattia@linux.it>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NMattia Dongili <malattia@linux.it>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

intel_mid_powerbtn.c uses input interfaces, so it should depend
on INPUT to fix build errors when CONFIG_INPUT is not enabled:

intel_mid_powerbtn.c:(.text+0x56ca8f): undefined reference to `input_event'
intel_mid_powerbtn.c:(.devinit.text+0x2e7b4): undefined reference to `input_allocate_device'
intel_mid_powerbtn.c:(.devinit.text+0x2e7ff): undefined reference to `input_set_capability'
intel_mid_powerbtn.c:(.devinit.text+0x2e84a): undefined reference to `input_register_device'
intel_mid_powerbtn.c:(.devinit.text+0x2e88b): undefined reference to `input_free_device'
intel_mid_powerbtn.c:(.devexit.text+0x42f0): undefined reference to `input_unregister_device'
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Cc: Hong Liu <hong.liu@intel.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

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/676997Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

The power button is connected to MSIC on Medfield, we will get two
interrupts from IOAPIC when pressing or releasing the power button.
Signed-off-by: NHong Liu <hong.liu@intel.com>
[Minor fixes as noted by Dmitry]
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Acked-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

These keys are supposed to be handled by any software
using the camera (like webKam or cheese...). They can
also be used to actually move the camera when possible.
Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Each device seems to be in a "group" (devid >> 16 & 0xFF).
Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

I should have done that one year ago, so it's more than
time to do it.

These two features use non-standard interfaces. There are the
only features that really need multiple path to guess what's
the right method name on a specific laptop.

Removing them allow to remove a lot of code an significantly
clean the driver.

This will affect the backlight code which won't be able to know
if the backlight is on or off.

The platform display file will also be write only (like the one
in eeepc-laptop).
Signed-off-by: NCorentin Chary <corentin.chary@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Asus took the DSDT from another model (L84F), made some change
to make it work, but forgot to remove WLED method (the laptop
doesn't have a wireless card). They even didn't change the model
name.

ref: https://bugzilla.kernel.org/show_bug.cgi?id=25712Signed-off-by: NCorentin Chary <corentin.chary@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Found while checking PDF manuals...
Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

This key should power off the backlight, not the display,
it is also used in acpi/video.c to do the same thing.
Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

I checked some more DSDT, and it seems that I wasn't
totally right about the meaning of DSTS return value.
Bit 0 is clearly the status of the device, and I discovered
that bit 16 is set when the device is present.
Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

This allow to remove ~30 lines of code.
Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

eeepc_wmi_get_devstate returns an acpi_status, so each
call need extra logic to handle the return code. This
patch add a simple getter, returning a boolean (or a
negative error code).
Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

\AMW0.WMBC, which is the main method that we use,
is not reentrant. When wireless hotpluging is enabled,
toggling the status of the wireless device using WMBC will
trigger a notification and the notification handler need to
call WMBC again to get the new status of the device, this
will trigger the following error:

ACPI Error (dswload-0802): [_T_0] Namespace lookup failure, AE_ALREADY_EXISTS
ACPI Exception: AE_ALREADY_EXISTS, During name lookup/catalog (20100428/psloop-231)
ACPI Error (psparse-0537): Method parse/execution failed [\AMW0.WMBC] (Node f7023b88), AE_ALREADY_EXISTS
ACPI: Marking method WMBC as Serialized because of AE_ALREADY_EXISTS error

Since there is currently no way to tell the acpi subsystem to mark
a method as serialized, we do it in eeepc-wmi.

Of course, we could let the first call fail, and then it would work,
but it doesn't seems really clean, and it will make the first
WMBC call return a random value.

This patch was tested on EeePc 1000H with a RaLink RT2860
wireless card using the rt2800pci driver. rt2860sta driver
seems to deadlock when we remove the pci device...
Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Implement wireless like hotplug handling (code stolen from eeepc-laptop).

Reminder: on some models rfkill is implemented by logically unplugging the
wireless card from the PCI bus. Despite sending ACPI notifications, this does
not appear to be implemented using standard ACPI hotplug - nor does the
firmware provide the _OSC method required to support native PCIe hotplug.
The only sensible choice appears to be to handle the hotplugging directly in
the platform driver.
Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

The OLPC XO-1.5 has an ebook switch, triggered when the laptop
screen is rotated then folding down, converting the device into ebook
form.

This switch is exposed through ACPI. Add a driver that exposes it
to userspace as an input device.
Signed-off-by: NDaniel Drake <dsd@laptop.org>
Acked-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
  regulator: Add MODULE_DEVICE_TABLE to max8997 and max8998
  regulator: fix tps6524x section mismatch
  regulator: Remove more wm831x-specific IRQ operations
  regulator: add ab8500 enable and raise time delays
  regulator: provide consumer interface for fall/rise time
  regulator: add set_voltage_time_sel infrastructure
  regulator: initialization for ab8500 regulators
  regulator: add support for USB voltage regulator
  regulator: switch the ab3100 to use enable_time()
  Regulator: add suspend-finish API for regulator core.
  regulator: fix typo in Kconfig
  regulator: Convert WM831x regulators to genirq
  regulator: If we fail when setting up a supply say which supply

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: Fix yet another race in disconnection
  ALSA: asihpi - Update verbose debug print macros
  ALSA: asihpi - Improve non-busmaster adapter operation
  ALSA: asihpi - Support single-rate no-SRC cards
  ALSA: HDA: New AD1984A model for Dell Precision R5500
  ALSA: vmalloc buffers should use normal mmap
  ALSA: hda - Fix SPDIF out regression on ALC889
  ALSA: usb-audio - Support for Boss JS-8 Jam Station
  ALSA: usb-audio: add Cakewalk UM-1G support
  sound/oss/opl3: validate voice and channel indexes
  sound/oss: remove offset from load_patch callbacks

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6:
  mfd: Clean up max8997 IRQ namespace
  mfd: Fold irq_set_chip/irq_set_handler
  mfd: Cleanup irq namespace
  mfd: twl6030: Cleanup interrupt handling
  mfd: twl4030: Cleanup interrupt handling
  mfd: mx8925: Remove irq_desc leftovers
  mfd: htc-i2cpld: Cleanup interrupt handling
  mfd: htc-egpio: Cleanup interrupt handling
  mfd: ezx-pcap: Remvove open coded irq handling
  mfd: 88pm860x: Remove unused irq_desc leftovers
  mfd: asic3: Cleanup irq handling
  mfd: Select MFD_CORE if TPS6105X driver is configured
  mfd: Add MODULE_DEVICE_TABLE to rdc321x-southbridge
  mfd: Add MAX8997/8966 IRQ control
  mfd: Constify i2c_device_id tables
  mfd: OLPC: Clean up names to match what OLPC actually uses
  mfd: Add mfd_clone_cell(), convert cs5535-mfd/olpc-xo1 to it

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging:
  hwmon: (pmbus) Fix temperature limit register access