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Fix the following sparse warning:
classmate-laptop.c:523:61: warning: Using plain integer as NULL pointer
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Fix the following sparse warning:
sony-laptop.c:1035:29: warning: symbol 'sony_bl_props' was not declared. Should it be static?
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Fix the following sparse warning:
thinkpad_acpi.c:3459:11: warning: symbol 'adaptive_keyboard_modes' was not declared. Should it be static?
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Replace existing usage of single variable sscanf with kstrtoint for
consistency with checkpatch warnings against such usage.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Fix the following sparse warning:
samsung-laptop.c:1365:52: warning: Using plain integer as NULL pointer
Signed-off-by: Lad, Prabhakar <prabhakar.csengg@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Some Samsung laptops with SABI3 delay the sleep for 10 seconds after
the lid is closed and do not wake up from sleep after the lid is opened.
A SABI command is needed to enable the better behavior.
Command = 0x6e, d0 = 0x81 enables this behavior. Returns d0 = 0x01.
Command = 0x6e, d0 = 0x80 disables this behavior. Returns d0 = 0x00.
Command = 0x6d and any d0 queries the state. This returns:
d0 = 0x00000*01, d1 = 0x00, d2 = 0x00, d3 = 0x0* when it is enabled.
d0 = 0x00000*00, d1 = 0x00, d2 = 0x00, d3 = 0x0* when it is disabled.
Where * is 0 - laptop has never slept or hibernated after switch on,
1 - laptop has hibernated just before,
2 - laptop has slept just before.
Patch addresses bug https://bugzilla.kernel.org/show_bug.cgi?id=75901 .
It adds a sysfs attribute lid_handling with a description and also an
addition to the quirks structure to enable the mode by default.
A user with another laptop in the bug report says that "power button has
to be pressed twice to wake the machine" when he or she enabled the mode
manually using the SABI command. Therefore, it is enabled by default
only for the single laptop that I have tested.
Signed-off-by: Julijonas Kikutis <julijonas.kikutis@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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This was "toshiba_acpi: Change sci_open function return value"
Some Toshiba laptops have "poorly implemented" SCI calls on their
BIOSes and are not checking for sci_{open, close} calls, therefore,
the sci_open function is failing and making some of the supported
features unavailable (kbd backlight, touchpad, illumination, etc.).
This patch checks whether we receive TOS_NOT_SUPPORTED and returns
1, making the supported features work on such laptops.
In the case that some laptops really do not support the SCI, all the
SCI dependent functions check for TOS_NOT_SUPPORTED, and thus, not
registering support for the queried feature.
Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Use DEVICE_ATTR_{RO,WO,RW} macros to simplify sysfs attributes
declaration.
To declare a "foo" attribute, DEVICE_ATTR_RW() requires foo_show() and
foo_store(), so rename a few functions to satisfy this requirement.
Also put the macro below each related show/store functions for clarity.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Read the resources from PCI BAR0 instead of using hardcoded values.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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This is small performance optimization of the busy_loop().
While here, use BIT() macro instead of plain integers when check the status.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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While here, do couple of amendments:
- move platform variable to the function where it's used
- define intel_scu_ipc_check_status() static
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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This reverts commit 02b2aaaa57ab41504e8d03a3b2ceeb9440a2c188.
This interface was determined to be flawed and required too invasive a
fix for the RC cycle. This will be revisited in 3.20.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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With a Lucid platform, asus_sysfs_is_visible() returned a boolean for
ls_switch and ls_level attributes.
Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Replace the magic numbers in fujitsu-laptop.c by the appropriate FB_BLANK
constants, as indicated by the comment for backlight_properties.power in
include/linux/backlight.h.
Signed-off-by: Michael Karcher <kernel@mkarcher.dialup.fu-berlin.de>
Acked-by: Jonathan Woithe <jwoithe@just42.net>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Since kernel 3.14 the backlight control has been broken on various Samsung
Atom based netbooks. This has been bisected and this problem happens since
commit b35684b8fa94 ("drm/i915: do full backlight setup at enable time")
This has been reported and discussed in detail here:
http://lists.freedesktop.org/archives/intel-gfx/2014-July/049395.html
Unfortunately no-one has been able to fix this. This only affects Samsung
Atom netbooks, and the Linux kernel and the BIOS of those laptops have never
worked well together. All affected laptops already have a quirk to avoid using
the standard acpi-video interface and instead use the samsung specific SABI
interface which samsung-laptop uses. It seems that recent fixes to the i915
driver have also broken backlight control through the SABI interface.
The intel_backlight driver OTOH works fine, and also allows for finer grained
backlight control. So add a new use_native_backlight quirk, and replace the
broken_acpi_video quirk with this quirk for affected models. This new quirk
disables acpi-video as before and also stops samsung-laptop from registering
the SABI based samsung_laptop backlight interface, leaving only the working
intel_backlight interface.
This commit enables this new quirk for 3 models which are known to be affected,
chances are that it needs to be used on other models too.
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1094948 # N145P
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1115713 # N250P
Reported-by: Bertrik Sikken <bertrik@sikken.nl> # N150P
Cc: stable@vger.kernel.org # 3.16
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Newer Toshiba laptops now come with a feature called USB Sleep and
Music, where the laptop speakers remain powered and the line-in jack
is used to connect an external device to use the laptop speakers when
the computer is asleep or turned off.
This patchs adds support to such feature, by creating a sysfs entry
named "usb_sleep_music", accepting only two values, 0 to disable and
1 to enable.
Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Newer Toshiba laptops equipped with USB 3.0 ports now have the
functionality of rapid charging devices connected to their USB hubs.
This patch adds support to use such feature by creating a sysfs entry
named "usb_rapid_charge", accepting only two values, 0 to disable and
1 to enable, however, the machine needs a restart everytime the
function is toggled.
Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Toshiba laptops supporting USB Sleep and Charge also come with a
feature called "USB functions under battery", which what it does when
enabled, is allows the USB Sleep functions when the computer is under
battery power.
This patch adds support to that function, creating a sysfs entry
named "sleep_functions_on_battery", accepting values from 0-100,
where zero disables the function and 1-100 sets the battery level at
which point the USB Sleep functions will be disabled, and printing
the current state of the functon and also the battery level currently
set.
Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Newer Toshiba models now come with a feature called Sleep and Charge,
where the computer USB ports remain powered when the computer is
asleep or turned off.
This patch adds support to such feature, creating a sysfs entry
called "usb_sleep_charge" to set the desired charging mode or to
disable it.
The sysfs entry accepts three parameters, 0, 1 and 2, beign disabled,
alternate and auto respectively.
The auto mode stands for USB conformant devices (which most are), and
the alternate mode stands for those non USB conformant devices that
require more power.
Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
Pull x86 platform driver update from Darren Hart:
- thinkpad-acpi: Switch to software mute, cleanups
- acerhdf: Bang-bang thermal governor, new models, cleanups
- dell-laptop: New keyboard backlight support and documentation
- toshiba_acpi: Keyboard backlight updates, hotkey handling
- dell-wmi: Keypress filtering, WMI event processing
- eeepc-laptop: Multiple cleanups, improved error handling, documentation
- hp_wireless: Inform the user if hp_wireless_input_setup()/add() fails
- misc: Code cleanups, quirks, various new IDs
* tag 'platform-drivers-x86-v3.19-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: (33 commits)
platform/x86/acerhdf: Still depends on THERMAL
Documentation: Add entry for dell-laptop sysfs interface
acpi: Remove _OSI(Linux) for ThinkPads
thinkpad-acpi: Try to use full software mute control
acerhdf: minor clean up
acerhdf: added critical trip point
acerhdf: Use bang-bang thermal governor
acerhdf: Adding support for new models
acerhdf: Adding support for "manual mode"
dell-smo8800: Add more ACPI ids and change description of driver
platform: x86: dell-laptop: Add support for keyboard backlight
toshiba_acpi: Add keyboard backlight mode change event
toshiba_acpi: Change notify funtion to handle more events
toshiba_acpi: Move hotkey enabling code to its own function
dell-wmi: Don't report keypresses on keybord illumination change
dell-wmi: Don't report keypresses for radio state changes
hp_wireless: Inform the user if hp_wireless_input_setup()/add() fails
toshiba-acpi: Add missing ID (TOS6207)
Sony-laptop: Deletion of an unnecessary check before the function call "pci_dev_put"
platform: x86: Deletion of checks before backlight_device_unregister()
...
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acerhdf uses thermal interfaces so it should depend on THERMAL.
It also should not select a thermal driver without checking that
THERMAL is enabled.
This fixes the following build errors when THERMAL=m and
ACERHDF=y.
drivers/built-in.o: In function `acerhdf_set_mode':
acerhdf.c:(.text+0x3e02e1): undefined reference to `thermal_zone_device_update'
drivers/built-in.o: In function `acerhdf_unbind':
acerhdf.c:(.text+0x3e052d): undefined reference to `thermal_zone_unbind_cooling_device'
drivers/built-in.o: In function `acerhdf_bind':
acerhdf.c:(.text+0x3e0593): undefined reference to `thermal_zone_bind_cooling_device'
drivers/built-in.o: In function `acerhdf_init':
acerhdf.c:(.init.text+0x1c2f5): undefined reference to `thermal_cooling_device_register'
acerhdf.c:(.init.text+0x1c360): undefined reference to `thermal_zone_device_register'
drivers/built-in.o: In function `acerhdf_unregister_thermal':
acerhdf.c:(.text.unlikely+0x3c67): undefined reference to `thermal_cooling_device_unregister'
acerhdf.c:(.text.unlikely+0x3c91): undefined reference to `thermal_zone_device_unregister'
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Peter Feuerer <peter@piie.net>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core update from Greg KH:
"Here's the set of driver core patches for 3.19-rc1.
They are dominated by the removal of the .owner field in platform
drivers. They touch a lot of files, but they are "simple" changes,
just removing a line in a structure.
Other than that, a few minor driver core and debugfs changes. There
are some ath9k patches coming in through this tree that have been
acked by the wireless maintainers as they relied on the debugfs
changes.
Everything has been in linux-next for a while"
* tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits)
Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries"
fs: debugfs: add forward declaration for struct device type
firmware class: Deletion of an unnecessary check before the function call "vunmap"
firmware loader: fix hung task warning dump
devcoredump: provide a one-way disable function
device: Add dev_<level>_once variants
ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries
ath: use seq_file api for ath9k debugfs files
debugfs: add helper function to create device related seq_file
drivers/base: cacheinfo: remove noisy error boot message
Revert "core: platform: add warning if driver has no owner"
drivers: base: support cpu cache information interface to userspace via sysfs
drivers: base: add cpu_device_create to support per-cpu devices
topology: replace custom attribute macros with standard DEVICE_ATTR*
cpumask: factor out show_cpumap into separate helper function
driver core: Fix unbalanced device reference in drivers_probe
driver core: fix race with userland in device_add()
sysfs/kernfs: make read requests on pre-alloc files use the buffer.
sysfs/kernfs: allow attributes to request write buffer be pre-allocated.
fs: sysfs: return EGBIG on write if offset is larger than file size
...
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thinkpad-acpi:
acpi: Remove _OSI(Linux) for ThinkPads
thinkpad-acpi: Try to use full software mute control
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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ThinkPads have hardware volume controls and three buttons to control
them. (These are separate from the standard mixer.) By default,
the buttons are:
- Mute: Mutes the hardware volume control and, on some models,
generates KEY_MUTE.
- Up: Unmutes, generates KEY_VOLUMEUP, and increases volume if
applicable. (Newer thinkpads only have hardware mute/unmute.)
- Down: Unmutes, generates KEY_VOLUMEDOWN, and decreases volume
if applicable.
This behavior is unfortunate, since modern userspace will also
handle the hotkeys and change the other mixer. If the software
mixer is muted and the hardware mixer is unmuted and you push mute,
hilarity ensues as they both switch state.
Rather than adding a lot of complex ALSA integration to fix this,
just disable the special ThinkPad volume controls when possible.
This turns the mute and volume buttons into regular buttons, and
standard software controls will work as expected.
ALSA already knows about the mute light on models with a mute light,
so everything should just work.
This should also allow us to remove _OSI(Linux) for all ThinkPads.
For future reference: It turns out that we can ask ACPI for one of
three behaviors directly on very new models. They are "latch" (the
default), "none" (no automatic control), and "toggle" (mute unmutes
when muted). All of the modes besides "none" seem to be a bit
buggy, though, and there doesn't seem to be a consistent way to get
any notification when the HW mute state is changed.
Signed-off-by: Andy Lutomirski <luto@mit.edu>
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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* renamed bios_settings_t to bios_settings, as it is no typedef
* replaced "unsigned char" by u8 in bios_settings struct for better
readability.
Cc: platform-driver-x86@vger.kernel.org
Cc: Darren Hart <dvhart@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andreas Mohr <andi@lisas.de>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Peter Feuerer <peter@piie.net>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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added critical trip point which represents the temperature limit.
Added return -EINVAL in case wrong trip point is provided.
Cc: platform-driver-x86@vger.kernel.org
Cc: Darren Hart <dvhart@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andreas Mohr <andi@lisas.de>
Cc: Borislav Petkov <bp@suse.de>
Cc: Javi Merino <javi.merino@arm.com>
Signed-off-by: Peter Feuerer <peter@piie.net>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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acerhdf has been doing an on-off fan control using hysteresis by
post-manipulating the outcome of thermal subsystem trip point handling.
This patch enables acerhdf to use the bang-bang governor, which is
intended for on-off controlled fans.
Cc: platform-driver-x86@vger.kernel.org
Cc: Darren Hart <dvhart@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
CC: Zhang Rui <rui.zhang@intel.com>
Cc: Andreas Mohr <andi@lisas.de>
Cc: Javi Merino <javi.merino@arm.com>
Acked-and-tested-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Peter Feuerer <peter@piie.net>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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added following new models:
* Aspire 5755G
* AO521
* AO751h
* Aspire One 753
* Extensa 5420
* Aspire 5315
* Aspire 5739G
* TravelMate TM8573T
Cc: platform-driver-x86@vger.kernel.org
Cc: Darren Hart <dvhart@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andreas Mohr <andi@lisas.de>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Peter Feuerer <peter@piie.net>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Some Acer models require an additional command to turn off the fan after
bios mode has been enabled. Adding new section in bios table to allow
support for those models, by writing an extra "manual mode" register.
Cc: platform-driver-x86@vger.kernel.org
Cc: Darren Hart <dvhart@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andreas Mohr <andi@lisas.de>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Peter Feuerer <peter@piie.net>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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This patch adds other ACPI ids from Windows inf driver which should be handled
by dell-smo8800 driver. ACPI devices have same structure -- one IRQ number.
This patch also updates description of module.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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This patch adds support for configuring keyboard backlight settings on supported
Dell laptops. It exports kernel leds interface and uses Dell SMBIOS tokens or
keyboard class interface.
With this patch it is possible to set:
* keyboard backlight level
* timeout after which will be backlight automatically turned off
* input activity triggers (keyboard, touchpad, mouse) which enable backlight
* ambient light settings
Settings are exported via sysfs:
/sys/class/leds/dell::kbd_backlight/
Code is based on newly released documentation by Dell in libsmbios project.
Thanks to Dan Carpenter who reported bug about unpredictable results in
quirks->kbd_timeouts for loop. His fix adds needs_kbd_timeouts flag to
quirk structure to indicate if kbd_timeouts array is empty or not.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Minor English corrections to comments.
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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A previous patch added support to handle more events.
This patch adds support to update the sysfs group whenever we receive
a 0x92 event, which indicates a change in the keyboard backlight mode,
removing the update group code from toshiba_kbd_bl_mode_store, as it is
no longer needed there.
Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Currently the function toshiba_acpi_notify only takes care of hotkeys,
however, the TOSXXXX devices receive more events that can be useful.
This patch changes the function to be able to handle more events,
and in the process, move all hotkey related code residing in it to
a new function called toshiba_acpi_process_hotkeys.
Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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The hotkey enabling code is being used by *_setup_keyboard and also by
*_resume.
This patch creates a new function called toshiba_acpi_enable_hotkeys to
be used by these two functions to avoid duplicating code.
Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Keyboard illumination level changes are performed by the BIOS, so no
events should be reported on keypress. This is already done on systems
using the legacy keymap, do it also for systems that don't use it.
Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
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The WMI events associated to KEY_WLAN are for all the radio devices
available. Use KEY_RFKILL instead since it's more appropriate.
The state of radio devices is changed directly by the BIOS when hotkeys
are pressed, so no events should be reported.
Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Merged two patches modifying this one line
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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In hpwl_add() there is a unused variable err to which we assign the
result of hp_wireless_input_setup() but we don't do anything depending
on the result so print out a message that informs the user if add()
(hp_wireless_input_setup()) fails since acpi_device_probe() doesn't
print anything in this case.
Signed-off-by: Giedrius Statkevicius <giedriuswork@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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toshiba-acpi was always missing TOS6207 ID so it did not load automatically
on some laptops (such as Portege R100). But it worked fine if loaded manually.
Commit 135740de7764 ("toshiba_acpi: Convert to use acpi_driver") broke that
and the driver does not work even when loaded manually since then.
Add TOS6207 ID to fix it.
Tested on Toshiba Portege R100.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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"pci_dev_put"
The pci_dev_put() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call
is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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The backlight_device_unregister() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
For msi-wmi.c:
Acked-by: Anisse Astier <anisse@astier.eu>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Bug 86521 uncovered that some TOS6208 devices also return
non zero values on a write call to the backlight method,
thus getting caught and bailed out by the extra check code.
This patch changes the set_lcd_brightness function to its
"original" state by just adapting it to the new function
format.
Signed-off-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Wifi on this laptop does not work unless asus-nb-wmi.wapf=4 is specified on
the kerne commandline, add a quirk for this.
Cc: stable@vger.kernel.org
BugLink: https://bugs.launchpad.net/bugs/1173681
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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HP ZBook 15 laptop needs a non-standard mapping (x_inverted).
BugLink: http://bugzilla.opensuse.org/show_bug.cgi?id=905329
Signed-off-by: Dominique Leuenberger <dimstar@opensuse.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Signed-off-by: Masatake YAMATO <yamato@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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The WMI buffer can contain multiple events. First value in buffer is
length of event followed by data of specified length. After that is next
length and next data. When length is zero then there is no more events
in bufffer.
This patch adds support for processing all events in buffer (not only
first) and parse more event types (not only hotkey events). Because of
variable length of events sometimes BIOS fills more hotkeys (or other
values) into single WMI event. In this case this patch also processes
these multiple hotkeys (and not only first one).
Some event types are just ignored because kernel is not interested in
them (e.g. NIC Link status, battery unplug, ...).
This patch is based on DSDT table from Dell Latitude E6440. Code should
be backward compatible so will process other events of old types same as
before this patch.
This patch also fixes a problem with unknown WMI event messages being
written to the log. Now all known events are parsed and those which are
not interesting to the kernel are dropped without an unknown WMI event
message.
Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Tested-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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eeepc_acpi_notify increases the indentation level to a whopping four. If
we revise the conditions a bit, we can reduce that to a more soothing
two and satisfy the indentation guidelines in Documentation/CodingStyle.
Remove an unwanted space while we're in the neighbourhood.
Signed-off-by: Frans Klaver <fransklaver@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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s/tempurature/temperature/
Signed-off-by: Chen Hanxiao <chenhanxiao@cn.fujitsu.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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In eeepc_hotk_thaw, we assume that get_acpi() will effectively return a
bool. However, it is possible that get_acpi() returns an error instead.
We should not be writing error values to the ACPI device, even though
it's quite possible that we couldn't contact the ACPI device in the
first place.
Signed-off-by: Frans Klaver <fransklaver@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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eeepc_get_fan_pwm and eeepc_set_fan_pwm convert the PWM value read from
the fan to a range lmsensors understands. Unfortunately this is only
clear if you are familiar with how lmsensors handles duty cycles.
Introduce two conversion functions that document the goal of these
conversions.
Signed-off-by: Frans Klaver <fransklaver@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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eeepc_[gs]et_fan_ctrl uses some magic numbers. These numbers mean
something more than just the number. Describe them with macros instead
of comments in one of the functions.
Signed-off-by: Frans Klaver <fransklaver@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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