09 Jul, 2008
2 commits
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rfkill_add_switch() calls rfkill_toggle_radio() to set the state of a
recently registered rfkill class to the current global state [for that
rfkill->type].The rfkill_toggle_radio() call is going to error out if the hardware is
RFKILL_STATE_HARD_BLOCKED, and the global state is RFKILL_STATE_UNBLOCKED.That is a quite normal situation which I missed to account for. As things
stand, the error return from rfkill_toggle_radio ends up causing
rfkill_register to bail out with an error (de-registering the new switch in
the process), which is Not Nice.Change rfkill_add_switch() to not return errors because of a failed call to
rfkill_toggle_radio(). We can go back to returning errors again (if that's
indeed the right thing to do) if we define the exact error codes the
rfkill->toggle_radio callbacks are to return in each situation, so that we
can ignore the right ones only.Bug reported by "kionez ".
Signed-off-by: Henrique de Moraes Holschuh
Cc: kionez
Acked-by: Ivo van Doorn
Signed-off-by: John W. Linville -
Improve rfkill_toggle_radio's kernel-doc header a bit.
Signed-off-by: Henrique de Moraes Holschuh
Acked-by: Ivo van Doorn
Signed-off-by: John W. Linville
27 Jun, 2008
12 commits
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The current naming of rfkill_state causes a lot of confusion: not only the
"kill" in rfkill suggests negative logic, but also the fact that rfkill cannot
turn anything on (it can just force something off or stop forcing something
off) is often forgotten.Rename RFKILL_STATE_OFF to RFKILL_STATE_SOFT_BLOCKED (transmitter is blocked
and will not operate; state can be changed by a toggle_radio request), and
RFKILL_STATE_ON to RFKILL_STATE_UNBLOCKED (transmitter is not blocked, and may
operate).Also, add a new third state, RFKILL_STATE_HARD_BLOCKED (transmitter is blocked
and will not operate; state cannot be changed through a toggle_radio request),
which is used by drivers to indicate a wireless transmiter was blocked by a
hardware rfkill line that accepts no overrides.Keep the old names as #defines, but document them as deprecated. This way,
drivers can be converted to the new names *and* verified to actually use rfkill
correctly one by one.Signed-off-by: Henrique de Moraes Holschuh
Acked-by: Ivo van Doorn
Signed-off-by: John W. Linville -
SW_RFKILL_ALL is the "emergency power-off all radios" input event. It must
be handled, and must always do the same thing as far as the rfkill system
is concerned: all transmitters are to go *immediately* offline.For safety, do NOT allow userspace to override EV_SW SW_RFKILL_ALL OFF. As
long as rfkill-input is loaded, that event will *always* be processed, and
it will *always* force all rfkill switches to disable all wireless
transmitters, regardless of user_claim attribute or anything else.Signed-off-by: Henrique de Moraes Holschuh
Acked-by: Ivo van Doorn
Cc: Dmitry Torokhov
Signed-off-by: John W. Linville -
The whole current_state thing seems completely useless and a source of
problems in rfkill-input, since state comparison is already done in rfkill,
and rfkill-input is more than likely to become out of sync with the real
state.Signed-off-by: Fabien Crespel
Acked-by: Henrique de Moraes Holschuh
Acked-by: Ivo van Doorn
Cc: Dmitry Torokhov
Signed-off-by: John W. Linville -
Use the notification chains to also send uevents, so that userspace can be
notified of state changes of every rfkill switch.Userspace should use these events for OSD/status report applications and
rfkill GUI frontends. HAL might want to broadcast them over DBUS, for
example. It might be also useful for userspace implementations of
rfkill-input, or to use HAL as the platform driver which promotes rfkill
switch change events into input events (to synchronize all other switches)
when necessary for platforms that lack a convenient platform-specific
kernel module to do it.Signed-off-by: Henrique de Moraes Holschuh
Acked-by: Ivo van Doorn
Cc: Dmitry Torokhov
Signed-off-by: John W. Linville -
We will need access to the rfkill switch type in string format for more
than just sysfs. Therefore, move it to a generic helper.Signed-off-by: Henrique de Moraes Holschuh
Acked-by: Ivo van Doorn
Signed-off-by: John W. Linville -
Add a notifier chain for use by the rfkill class. This notifier chain
signals the following events (more to be added when needed):1. rfkill: rfkill device state has changed
A pointer to the rfkill struct will be passed as a parameter.
The notifier message types have been added to include/linux/rfkill.h
instead of to include/linux/notifier.h in order to avoid the madness of
modifying a header used globally (and that triggers an almost full tree
rebuild every time it is touched) with information that is of interest only
to code that includes the rfkill.h header.Signed-off-by: Henrique de Moraes Holschuh
Acked-by: Ivo van Doorn
Signed-off-by: John W. Linville -
The resume handler should reset the wireless transmitter rfkill
state to exactly what it was when the system was suspended. Do it,
and do it using the normal routines for state change while at it.The suspend handler should force-switch the transmitter to blocked
state, ignoring caches. Do it.Also take an opportunity shot to rfkill_remove_switch() and also
force the transmitter to blocked state there, bypassing caches.Signed-off-by: Henrique de Moraes Holschuh
Acked-by: Ivo van Doorn
Signed-off-by: John W. Linville -
Unfortunately, instead of adding a generic Wireless WAN type, a technology-
specific type (WiMAX) was added. That's useless for other WWAN devices,
such as EDGE, UMTS, X-RTT and other such radios.Add a WWAN rfkill type for generic wireless WAN devices. No keys are added
as most devices really want to use KEY_WLAN for WWAN control (in a cycle of
none, WLAN, WWAN, WLAN+WWAN) and need no specific keycode added.Signed-off-by: Henrique de Moraes Holschuh
Acked-by: Ivo van Doorn
Cc: Iñaky Pérez-González
Cc: David S. Miller
Signed-off-by: John W. Linville -
Currently, rfkill support for read/write rfkill switches is hacked through
a round-trip over the input layer and rfkill-input to let a driver sync
rfkill->state to hardware changes.This is buggy and sub-optimal. It causes real problems. It is best to
think of the rfkill class as supporting only write-only switches at the
moment.In order to implement the read/write functionality properly:
Add a get_state() hook that is called by the class every time it needs to
fetch the current state of the switch. Add a call to this hook every time
the *current* state of the radio plays a role in a decision.Also add a force_state() method that can be used to forcefully syncronize
the class' idea of the current state of the switch. This allows for a
faster implementation of the read/write functionality, as a driver which
get events on switch changes can avoid the need for a get_state() hook.If the get_state() hook is left as NULL, current behaviour is maintained,
so this change is fully backwards compatible with the current rfkill
drivers.For hardware that issues events when the rfkill state changes, leave
get_state() NULL in the rfkill struct, set the initial state properly
before registering with the rfkill class, and use the force_state() method
in the driver to keep the rfkill interface up-to-date.get_state() can be called by the class from atomic context. It must not
sleep.Signed-off-by: Henrique de Moraes Holschuh
Acked-by: Ivo van Doorn
Cc: Dmitry Torokhov
Signed-off-by: John W. Linville -
Currently, radios are always enabled when their rfkill interface is
registered. This is not optimal, the safest state for a radio is to be
offline unless the user turns it on.Add a module parameter that causes all radios to be disabled when their
rfkill interface is registered. The module default is not changed so
unless the parameter is used, radios will still be forced to their enabled
state when they are registered.The new rfkill module parameter is called "default_state".
Signed-off-by: Henrique de Moraes Holschuh
Acked-by: Ivo van Doorn
Signed-off-by: John W. Linville -
Teach rfkill-input how to handle SW_RFKILL_ALL events (new name for the
SW_RADIO event).SW_RFKILL_ALL is an absolute enable-or-disable command that is tied to all
radios in a system.Signed-off-by: Henrique de Moraes Holschuh
Acked-by: Ivo van Doorn
Cc: Dmitry Torokhov
Signed-off-by: John W. Linville -
Fix a minor typo in an exported function documentation
Signed-off-by: Henrique de Moraes Holschuh
Acked-by: Ivo van Doorn
Cc: Dmitry Torokhov
Signed-off-by: John W. Linville
16 Apr, 2008
1 commit
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rfkill_switch_all() is supposed to only switch all the interfaces of a
given type, but does not actually do this; instead, it just switches
everything currently in the same state.Add the necessary type check in.
(This fixes a bug I've been seeing while developing an rfkill laptop
driver, with both bluetooth and wireless simultaneously changing state
after only pressing either KEY_WLAN or KEY_BLUETOOTH).Signed-off-by: Carlos Corbacho
Signed-off-by: John W. Linville
24 Feb, 2008
1 commit
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During the last step of hibernation in the "platform" mode (with the
help of ACPI) we use the suspend code, including the devices'
->suspend() methods, to prepare the system for entering the ACPI S4
system sleep state.But at least for some devices the operations performed by the
->suspend() callback in that case must be different from its operations
during regular suspend.For this reason, introduce the new PM event type PM_EVENT_HIBERNATE and
pass it to the device drivers' ->suspend() methods during the last phase
of hibernation, so that they can distinguish this case and handle it as
appropriate. Modify the drivers that handle PM_EVENT_SUSPEND in a
special way and need to handle PM_EVENT_HIBERNATE in the same way.These changes are necessary to fix a hibernation regression related
to the i915 driver (ref. http://lkml.org/lkml/2008/2/22/488).Signed-off-by: Rafael J. Wysocki
Acked-by: Pavel Machek
Tested-by: Jeff Chua
Signed-off-by: Linus Torvalds
03 Feb, 2008
1 commit
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Signed-off-by: Oliver Pinter
Signed-off-by: Adrian Bunk
01 Feb, 2008
1 commit
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Teach rfkill about wimax radios.
Had to define a KEY_WIMAX as a 'key for disabling only wimax radios',
as other radio technologies have. This makes sense as hardware has
specific keys for disabling specific radios.The RFKILL enabling part is, otherwise, a copy and paste of any other
radio technology.Signed-off-by: Inaky Perez-Gonzalez
Signed-off-by: Ivo van Doorn
Signed-off-by: John W. Linville
Signed-off-by: David S. Miller
21 Jan, 2008
1 commit
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Code inspection turned up that error cases in rfkill_register() do not
call rfkill_led_trigger_unregister() even though we have already
registered.Signed-off-by: Eric Paris
Signed-off-by: John W. Linville
30 Nov, 2007
1 commit
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rfkill_toggle_radio is called from functions where
rfkill->mutex is already aquired.Remove the lock from rfkill_toggle_radio() and add it to
the only calling function that calls it without the lock held.Signed-off-by: Michael Buesch
Acked-by: Ivo van Doorn
Signed-off-by: John W. Linville
11 Nov, 2007
4 commits
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Signed-off-by: John W. Linville
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Replace mutex_lock_interruptible() by mutex_lock() in rfkill_register(),
as interruptible doesn't make sense there.Add a sanity check for rfkill->type, as that's used for an unchecked dereference
in an array and might cause hard to debug crashes if the driver sets this
to an invalid value.Signed-off-by: Michael Buesch
Signed-off-by: Ivo van Doorn
Signed-off-by: John W. Linville -
We must use subsys_initcall, because we must initialize before a
driver calls rfkill_register().Signed-off-by: Michael Buesch
Signed-off-by: Ivo van Doorn
Signed-off-by: John W. Linville -
Registering the switch triggers a LED event, so we must register
LED triggers before the switch.
This has a potential to fix a crash, depending on how the device
driver initializes the rfkill data structure.Signed-off-by: Michael Buesch
Signed-off-by: Ivo van Doorn
Signed-off-by: John W. Linville
20 Oct, 2007
1 commit
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get rid of input BIT* duplicate defines
use newly global defined macros for input layer. Also remove includes of
input.h from non-input sources only for BIT macro definiton. Define the
macro temporarily in local manner, all those local definitons will be
removed further in this patchset (to not break bisecting).
BIT macro will be globally defined (1<
Cc:
Acked-by: Jiri Kosina
Cc:
Acked-by: Marcel Holtmann
Cc:
Acked-by: Mauro Carvalho Chehab
Cc:
Cc:
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
11 Oct, 2007
5 commits
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Buttons that work directly on hardware cannot support
the "user_claim" functionality. Add a flag to signal
this and return -EOPNOTSUPP in this case.
b43 is such a device.Signed-off-by: Michael Buesch
Acked-by: Ivo van Doorn
Signed-off-by: John W. Linville
Signed-off-by: David S. Miller -
This adds a LED trigger.
Signed-off-by: Michael Buesch
Acked-by: Ivo van Doorn
Signed-off-by: John W. Linville
Signed-off-by: David S. Miller -
rfkill_switch_all shouldn't be called by drivers directly,
instead they should send a signal over the input device.To prevent confusion for driver developers, move the
function into a rfkill private header.Signed-off-by: Ivo van Doorn
Signed-off-by: David S. Miller -
This patch will add support for UWB keys to rfkill,
support for this has been requested by Inaky.Signed-off-by: Ivo van Doorn
Signed-off-by: David S. Miller -
As Dmitry pointed out earlier, rfkill-input.c
doesn't support irda because there are no users
and we shouldn't add unrequired KEY_ defines.However, RFKILL_TYPE_IRDA was defined in the
rfkill.h header file and would confuse people
about whether it is implemented or not.This patch removes IRDA support completely,
so it can be added whenever a driver wants the
feature.Signed-off-by: Ivo van Doorn
Signed-off-by: David S. Miller
19 Jul, 2007
2 commits
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Signed-off-by: YOSHIFUJI Hideaki
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The rfkill state Sysfs attribute should be made writable,
we already pass the argument for the store handler,
so we only need to update the permissions flag.Signed-off-by: Ivo van Doorn
Signed-off-by: David S. Miller
15 Jul, 2007
1 commit
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Subject: [patch] net/input: fix net/rfkill/rfkill-input.c bug on 64-bit systems
this recent commit:
commit cf4328cd949c2086091c62c5685f1580fe9b55e4
Author: Ivo van Doorn
Date: Mon May 7 00:34:20 2007 -0700[NET]: rfkill: add support for input key to control wireless radio
added this 64-bit bug:
....
unsigned int flags;spin_lock_irqsave(&task->lock, flags);
....irq 'flags' must be unsigned long, not unsigned int. The -rt tree has
strict checks about this on 64-bit so this triggered a build failure.Signed-off-by: Ingo Molnar
Signed-off-by: David S. Miller
20 May, 2007
1 commit
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coverity has spotted a bug in rfkill.c (bug id #1627),
in rfkill_allocate() NULL was returns if the kzalloc() works,
and deref the NULL pointer if it fails,Signed-off-by: Ivo van Doorn
Signed-off-by: David S. Miller
07 May, 2007
1 commit
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The RF kill patch that provides infrastructure for implementing
switches controlling radio states on various network and other cards.[dtor@insightbb.com: address review comments]
[akpm@linux-foundation.org: cleanups, build fixes]Signed-off-by: Ivo van Doorn
Signed-off-by: Andrew Morton
Signed-off-by: Dmitry Torokhov
Signed-off-by: David S. Miller