While looking for the duplicates in /sys/class/wmi/, I couldn't find
them. The code that looks for duplicates uses strncmp in a binary GUID,
which may contain zero bytes. The right function is memcmp, which is
also used in another section of wmi code.

It was finding 49142400-C6A3-40FA-BADB-8A2652834100 as a duplicate of
39142400-C6A3-40FA-BADB-8A2652834100. Since the first byte is the fourth
printed, they were found as equal by strncmp.
Signed-off-by: NThadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>
Cc: stable@kernel.org

Free acpi return memory after query.
Signed-off-by: NZeng Zhaoming <zengzm.kernel@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

I didn't know the difference between the two when I wrote this code in
commit c30116c6.
Signed-off-by: NAnisse Astier <anisse@astier.eu>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Add new MUTE key seen on Medion Akoya AIO PC P4010D using MSI motherboard
(Product Name: MS-7621)
Reported-and-tested-by: NMark Huijgen <mark.sf.net@huijgen.tk>
Signed-off-by: NAnisse Astier <anisse@astier.eu>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Asus UL30A has a 3G chip, but the radio is disabled by default.
The DSDT also reference a WIMAX device, which is not present on this model.

This patch adds two new files: wwan and wimax to control WWAN and
WIMAX devices. It does not use rfkill, because like WLED and BLED,
we don't know yet that the two ACPI functions will always control the
radio, they may control only the leds on some hardware.

We may add rfkill switchs later.
Signed-off-by: NCorentin Chary <corentincj@iksaif.net>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

This fixes the following:

  CC [M]  drivers/platform/x86/eeepc-wmi.o
drivers/platform/x86/eeepc-wmi.c:322: warning: initialization from incompatible pointer type
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Some of the IBM servers that are supported by ibm_rtl
can run in both Legacy mode (BIOS) and in UEFI mode.
When running in UEFI mode, it is possible that the
EBDA table exists but cannot be mapped and reports
errors.  We need to make sure that by default we don't
try to probe the machines if they are running in UEFI
mode.
Signed-off-by: NVernon Mauery <vernux@us.ibm.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Allow all IBM machines to pass the DMI check so that we
don't have to add them one by one to the driver.  Any IBM
machine that has the _RTL_ table in the EBDA will work.
Signed-off-by: NVernon Mauery <vernux@us.ibm.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Delete successive assignments to the same location.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression i;
@@

*i = ...;
 i = ...;
// </smpl>
Signed-off-by: NJulia Lawall <julia@diku.dk>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

A lone FN key press on a Toshiba Portégé R700 without another key in
conjunction results in an ACPI event and a spurious error message on
the console.

Add a key entry to map this event to a KEY_FN keypress. This prevents
the console message.
Signed-off-by: NJon Dowland <jmtd@debian.org>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Fix printk format warning:

drivers/platform/x86/ibm_rtl.c:305:warning: format '%#llx' expects type 'long long unsigned int', but argument 2 has type 'phys_addr_t'
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Cc: Keith Mannthey <kmannth@us.ibm.com>
Cc: Vernon Mauery <vernux@us.ibm.com>
Cc: platform-driver-x86@vger.kernel.org
Cc: Matthew Garrett <mjg@redhat.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NZimny Lech <napohybelskurwysynom2010@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

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: NChris Bagwell <chris@cnpbagwell.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

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: NChris Bagwell <chris@cnpbagwell.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Function acpi_pcc_retrieve_biosdata is always called with parameters
(pcc, pcc->sinf), so we can drop the second parameter. It was
dangerous to pass the sinf array separately anyway, as its length is
checked as pcc->num_sifr, which pretty much assumed it was pcc->sinf
(or at least had the same size.)

This change makes the code slightly more compact and thus marginally
faster.
Signed-off-by: NJean Delvare <jdelvare@suse.de>
Cc: Harald Welte <laforge@gnumonks.org>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

acpi_pcc_retrieve_biosdata() returns success instead of error if
HKEY.SINF is invalid. Fix this.

Furthermore, if acpi_pcc_retrieve_biosdata() returns an error
during device addition, initialization is properly reverted but value
0 is returned, which means success. This would cause a crash when
later using or removing the device, so fix this too.
Signed-off-by: NJean Delvare <jdelvare@suse.de>
Cc: Harald Welte <laforge@gnumonks.org>
Cc: Bruno Premont <bonbons@linux-vserver.org>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

In pmic_irq_type(), we use gpio as array index for trigger,
thus the valid value range for gpio should be 0 .. NUM_GPIO - 1.
Signed-off-by: NAxel Lin <axel.lin@gmail.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

After a period of RFC for this driver, I think it is ready
for inclusion in the platform-driver-x86 tree, hopefully to
be staged in the next merge window into Linus's tree.

--Vernon

------------------------------------------------------------

IBM Real-Time "SMI Free" mode driver

This driver supports the Real-Time Linux (RTL) BIOS feature.
The RTL feature allows non-fatal System Management Interrupts
(SMIs) to be disabled on supported IBM platforms and is
intended to be coupled with a user-space daemon to monitor
the hardware in a way that can be prioritized and scheduled
to better suit the requirements for the system.

The Device is presented as a special "_RTL_" table to the OS
in the Extended BIOS Data Area.  There is a simple protocol
for entering and exiting the mode at runtime.  This driver
creates a simple sysfs interface to allow a simple entry and
exit from RTL mode in the UFI/BIOS.

Since the driver is specific to IBM SystemX hardware (x86-
based servers) it only builds on x86 builds.  To reduce the
risk of loading on the wrong hardware, the module uses DMI
information and checks a list of servers that are known to
work.
Signed-off-by: NVernon Mauery <vernux@us.ibm.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Add a software rfkill switch for the WLAN interface in the OLPC XO-1
laptop. It uses the OLPC embedded controller to cut/restore power to
the Marvell WLAN chip on the motherboard.
Signed-off-by: NDaniel Drake <dsd@laptop.org>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

The hdaps driver isn't a hardware monitoring driver, so it shouldn't
live under driver/hwmon. drivers/platform/x86 seems much more
appropriate, as the driver is only useful on x86 laptops.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Guenter Roeck <guenter.roeck@ericsson.com>
Cc: Matthew Garrett <mjg@redhat.com>
Cc: Frank Seidel <frank@f-seidel.de>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

The makefile didn't get updated when the driver changed name, which broke
the build.
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

The intel_scu_ipc_update_register 2nd paramter should the bits and 3rd
paramter should be the mask.

This typo was introduced during IPC function changing...
Reported-by: NRyan Zhou <ryan.zhou@intel.com>
Signed-off-by: NAlek Du <alek.du@intel.com>
Signed-off-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Add new module parameter that force module not to register bluetooth rfkill.

There is report that saying using this bluetooth rfkill to enable/disable
bluetooth will let bluetooth device initial failed when enable on Lenovo
ideapad S12. Fortunately there is another rfkill registered by bluetooth
driver for S12 and user can shutdown the bluetooth by either bluetooth driver
or HW RF switch.

For dual OS user, it may have some trouble that using Linux after turning off
bluetooth with another OS if we do not register bluetooth rfkill at all. So
we will force bluetooth enable when no_bt_rfkill=1.
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Tested-by: NMario 'BitKoenig' Holbe <Mario.Holbe@TU-Ilmenau.DE>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Since the platform drivers doing more for laptops than just using specific
ACPI device. It will be good to change the name from *_acpi to *-laptop.

Reference: http://lkml.org/lkml/2010/8/14/154Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Acked-by: NLen Brown <len.brown@intel.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Control power of rf modules by ec commands
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

1. Read hw rfkill status by ec command
2. Not to touch sw status of each rfkill when hw rfkill notify
3. Initial rfkill status when module loaded
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

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

There are several bits of the return value of _CFG shows if RF/Camera devices
exist or not.
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

By reading from method _CFG to make sure we bind on the correct VPC2004 device.
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Check VPC bit to make sure the HW rfkill is touched.
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

There are two methods under VPC2004 which is used to access VDAT/VCMD of EC
register. Add helpers for read and write these two registers.

And add read_method_int for reading the return value from ACPI methods which
requires no parameter.
Signed-off-by: NIke Panhc <ike.pan@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Export the status of RF killswitch through debugfs.

The killswitch status is obtained by the SMI to BIOS. Exporting this status
through debugfs can help identify the issue with the misbehaving firmware.
Signed-off-by: NKeng-Yu Lin <keng-yu.lin@canonical.com>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Instead of creating wmi_blocks and then register corresponding devices
on a separate pass do it all in one shot, since lifetime rules for both
objects are the same. This also takes care of leaking devices when
device_create fails for one of them.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Instead of adding modalias attribute manually set it up as class's
device attribute so driver core will create and remove it for us.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

This makes source more concise and easier to read.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Do not abuse wmi_block structure to hold the head of list
of blocks, use separate list_head for that.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

There is no reason why we allocate memory and copy data into an
intermediate buffer, it is not like we are working with data coming
from userspace.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

If we _WDG returned object that is not buffer we were forgetting
to free memory allocated for that object.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>

Courtesy of sparse...
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NMatthew Garrett <mjg@redhat.com>