-rfkill - RF switch subsystem support
-====================================
+rfkill - RF kill switch support
+===============================
-1 Introduction
-2 Implementation details
-3 Kernel driver guidelines
-3.1 wireless device drivers
-3.2 platform/switch drivers
-3.3 input device drivers
-4 Kernel API
-5 Userspace support
+1. Introduction
+2. Implementation details
+3. Kernel driver guidelines
+4. Kernel API
+5. Userspace support
-1. Introduction:
+1. Introduction
-The rfkill switch subsystem exists to add a generic interface to circuitry that
-can enable or disable the signal output of a wireless *transmitter* of any
-type. By far, the most common use is to disable radio-frequency transmitters.
+The rfkill subsystem provides a generic interface to disabling any radio
+transmitter in the system. When a transmitter is blocked, it shall not
+radiate any power.
-Note that disabling the signal output means that the the transmitter is to be
-made to not emit any energy when "blocked". rfkill is not about blocking data
-transmissions, it is about blocking energy emission.
+The subsystem also provides the ability to react on button presses and
+disable all transmitters of a certain type (or all). This is intended for
+situations where transmitters need to be turned off, for example on
+aircraft.
-The rfkill subsystem offers support for keys and switches often found on
-laptops to enable wireless devices like WiFi and Bluetooth, so that these keys
-and switches actually perform an action in all wireless devices of a given type
-attached to the system.
-The buttons to enable and disable the wireless transmitters are important in
-situations where the user is for example using his laptop on a location where
-radio-frequency transmitters _must_ be disabled (e.g. airplanes).
-Because of this requirement, userspace support for the keys should not be made
-mandatory. Because userspace might want to perform some additional smarter
-tasks when the key is pressed, rfkill provides userspace the possibility to
-take over the task to handle the key events.
-
-===============================================================================
-2: Implementation details
+2. Implementation details
The rfkill subsystem is composed of various components: the rfkill class, the
rfkill-input module (an input layer handler), and some specific input layer
events.
-The rfkill class provides kernel drivers with an interface that allows them to
-know when they should enable or disable a wireless network device transmitter.
-This is enabled by the CONFIG_RFKILL Kconfig option.
-
-The rfkill class support makes sure userspace will be notified of all state
-changes on rfkill devices through uevents. It provides a notification chain
-for interested parties in the kernel to also get notified of rfkill state
-changes in other drivers. It creates several sysfs entries which can be used
-by userspace. See section "Userspace support".
-
-The rfkill-input module provides the kernel with the ability to implement a
-basic response when the user presses a key or button (or toggles a switch)
-related to rfkill functionality. It is an in-kernel implementation of default
-policy of reacting to rfkill-related input events and neither mandatory nor
-required for wireless drivers to operate. It is enabled by the
-CONFIG_RFKILL_INPUT Kconfig option.
-
-rfkill-input is a rfkill-related events input layer handler. This handler will
-listen to all rfkill key events and will change the rfkill state of the
-wireless devices accordingly. With this option enabled userspace could either
-do nothing or simply perform monitoring tasks.
-
-The rfkill-input module also provides EPO (emergency power-off) functionality
-for all wireless transmitters. This function cannot be overridden, and it is
-always active. rfkill EPO is related to *_RFKILL_ALL input layer events.
-
-
-Important terms for the rfkill subsystem:
-
-In order to avoid confusion, we avoid the term "switch" in rfkill when it is
-referring to an electronic control circuit that enables or disables a
-transmitter. We reserve it for the physical device a human manipulates
-(which is an input device, by the way):
-
-rfkill switch:
-
- A physical device a human manipulates. Its state can be perceived by
- the kernel either directly (through a GPIO pin, ACPI GPE) or by its
- effect on a rfkill line of a wireless device.
-
-rfkill controller:
-
- A hardware circuit that controls the state of a rfkill line, which a
- kernel driver can interact with *to modify* that state (i.e. it has
- either write-only or read/write access).
-
-rfkill line:
-
- An input channel (hardware or software) of a wireless device, which
- causes a wireless transmitter to stop emitting energy (BLOCK) when it
- is active. Point of view is extremely important here: rfkill lines are
- always seen from the PoV of a wireless device (and its driver).
-
-soft rfkill line/software rfkill line:
-
- A rfkill line the wireless device driver can directly change the state
- of. Related to rfkill_state RFKILL_STATE_SOFT_BLOCKED.
-
-hard rfkill line/hardware rfkill line:
-
- A rfkill line that works fully in hardware or firmware, and that cannot
- be overridden by the kernel driver. The hardware device or the
- firmware just exports its status to the driver, but it is read-only.
- Related to rfkill_state RFKILL_STATE_HARD_BLOCKED.
-
-The enum rfkill_state describes the rfkill state of a transmitter:
-
-When a rfkill line or rfkill controller is in the RFKILL_STATE_UNBLOCKED state,
-the wireless transmitter (radio TX circuit for example) is *enabled*. When the
-it is in the RFKILL_STATE_SOFT_BLOCKED or RFKILL_STATE_HARD_BLOCKED, the
-wireless transmitter is to be *blocked* from operating.
-
-RFKILL_STATE_SOFT_BLOCKED indicates that a call to toggle_radio() can change
-that state. RFKILL_STATE_HARD_BLOCKED indicates that a call to toggle_radio()
-will not be able to change the state and will return with a suitable error if
-attempts are made to set the state to RFKILL_STATE_UNBLOCKED.
-
-RFKILL_STATE_HARD_BLOCKED is used by drivers to signal that the device is
-locked in the BLOCKED state by a hardwire rfkill line (typically an input pin
-that, when active, forces the transmitter to be disabled) which the driver
-CANNOT override.
-
-Full rfkill functionality requires two different subsystems to cooperate: the
-input layer and the rfkill class. The input layer issues *commands* to the
-entire system requesting that devices registered to the rfkill class change
-state. The way this interaction happens is not complex, but it is not obvious
-either:
-
-Kernel Input layer:
-
- * Generates KEY_WWAN, KEY_WLAN, KEY_BLUETOOTH, SW_RFKILL_ALL, and
- other such events when the user presses certain keys, buttons, or
- toggles certain physical switches.
-
- THE INPUT LAYER IS NEVER USED TO PROPAGATE STATUS, NOTIFICATIONS OR THE
- KIND OF STUFF AN ON-SCREEN-DISPLAY APPLICATION WOULD REPORT. It is
- used to issue *commands* for the system to change behaviour, and these
- commands may or may not be carried out by some kernel driver or
- userspace application. It follows that doing user feedback based only
- on input events is broken, as there is no guarantee that an input event
- will be acted upon.
-
- Most wireless communication device drivers implementing rfkill
- functionality MUST NOT generate these events, and have no reason to
- register themselves with the input layer. Doing otherwise is a common
- misconception. There is an API to propagate rfkill status change
- information, and it is NOT the input layer.
-
-rfkill class:
-
- * Calls a hook in a driver to effectively change the wireless
- transmitter state;
- * Keeps track of the wireless transmitter state (with help from
- the driver);
- * Generates userspace notifications (uevents) and a call to a
- notification chain (kernel) when there is a wireless transmitter
- state change;
- * Connects a wireless communications driver with the common rfkill
- control system, which, for example, allows actions such as
- "switch all bluetooth devices offline" to be carried out by
- userspace or by rfkill-input.
-
- THE RFKILL CLASS NEVER ISSUES INPUT EVENTS. THE RFKILL CLASS DOES
- NOT LISTEN TO INPUT EVENTS. NO DRIVER USING THE RFKILL CLASS SHALL
- EVER LISTEN TO, OR ACT ON RFKILL INPUT EVENTS. Doing otherwise is
- a layering violation.
-
- Most wireless data communication drivers in the kernel have just to
- implement the rfkill class API to work properly. Interfacing to the
- input layer is not often required (and is very often a *bug*) on
- wireless drivers.
-
- Platform drivers often have to attach to the input layer to *issue*
- (but never to listen to) rfkill events for rfkill switches, and also to
- the rfkill class to export a control interface for the platform rfkill
- controllers to the rfkill subsystem. This does NOT mean the rfkill
- switch is attached to a rfkill class (doing so is almost always wrong).
- It just means the same kernel module is the driver for different
- devices (rfkill switches and rfkill controllers).
-
-
-Userspace input handlers (uevents) or kernel input handlers (rfkill-input):
-
- * Implements the policy of what should happen when one of the input
- layer events related to rfkill operation is received.
- * Uses the sysfs interface (userspace) or private rfkill API calls
- to tell the devices registered with the rfkill class to change
- their state (i.e. translates the input layer event into real
- action).
-
- * rfkill-input implements EPO by handling EV_SW SW_RFKILL_ALL 0
- (power off all transmitters) in a special way: it ignores any
- overrides and local state cache and forces all transmitters to the
- RFKILL_STATE_SOFT_BLOCKED state (including those which are already
- supposed to be BLOCKED).
- * rfkill EPO will remain active until rfkill-input receives an
- EV_SW SW_RFKILL_ALL 1 event. While the EPO is active, transmitters
- are locked in the blocked state (rfkill will refuse to unblock them).
- * rfkill-input implements different policies that the user can
- select for handling EV_SW SW_RFKILL_ALL 1. It will unlock rfkill,
- and either do nothing (leave transmitters blocked, but now unlocked),
- restore the transmitters to their state before the EPO, or unblock
- them all.
-
-Userspace uevent handler or kernel platform-specific drivers hooked to the
-rfkill notifier chain:
-
- * Taps into the rfkill notifier chain or to KOBJ_CHANGE uevents,
- in order to know when a device that is registered with the rfkill
- class changes state;
- * Issues feedback notifications to the user;
- * In the rare platforms where this is required, synthesizes an input
- event to command all *OTHER* rfkill devices to also change their
- statues when a specific rfkill device changes state.
-
-
-===============================================================================
-3: Kernel driver guidelines
-
-Remember: point-of-view is everything for a driver that connects to the rfkill
-subsystem. All the details below must be measured/perceived from the point of
-view of the specific driver being modified.
-
-The first thing one needs to know is whether his driver should be talking to
-the rfkill class or to the input layer. In rare cases (platform drivers), it
-could happen that you need to do both, as platform drivers often handle a
-variety of devices in the same driver.
-
-Do not mistake input devices for rfkill controllers. The only type of "rfkill
-switch" device that is to be registered with the rfkill class are those
-directly controlling the circuits that cause a wireless transmitter to stop
-working (or the software equivalent of them), i.e. what we call a rfkill
-controller. Every other kind of "rfkill switch" is just an input device and
-MUST NOT be registered with the rfkill class.
-
-A driver should register a device with the rfkill class when ALL of the
-following conditions are met (they define a rfkill controller):
-
-1. The device is/controls a data communications wireless transmitter;
-
-2. The kernel can interact with the hardware/firmware to CHANGE the wireless
- transmitter state (block/unblock TX operation);
-
-3. The transmitter can be made to not emit any energy when "blocked":
- rfkill is not about blocking data transmissions, it is about blocking
- energy emission;
-
-A driver should register a device with the input subsystem to issue
-rfkill-related events (KEY_WLAN, KEY_BLUETOOTH, KEY_WWAN, KEY_WIMAX,
-SW_RFKILL_ALL, etc) when ALL of the folowing conditions are met:
-
-1. It is directly related to some physical device the user interacts with, to
- command the O.S./firmware/hardware to enable/disable a data communications
- wireless transmitter.
-
- Examples of the physical device are: buttons, keys and switches the user
- will press/touch/slide/switch to enable or disable the wireless
- communication device.
-
-2. It is NOT slaved to another device, i.e. there is no other device that
- issues rfkill-related input events in preference to this one.
-
- Please refer to the corner cases and examples section for more details.
-
-When in doubt, do not issue input events. For drivers that should generate
-input events in some platforms, but not in others (e.g. b43), the best solution
-is to NEVER generate input events in the first place. That work should be
-deferred to a platform-specific kernel module (which will know when to generate
-events through the rfkill notifier chain) or to userspace. This avoids the
-usual maintenance problems with DMI whitelisting.
-
-
-Corner cases and examples:
-====================================
-
-1. If the device is an input device that, because of hardware or firmware,
-causes wireless transmitters to be blocked regardless of the kernel's will, it
-is still just an input device, and NOT to be registered with the rfkill class.
-
-2. If the wireless transmitter switch control is read-only, it is an input
-device and not to be registered with the rfkill class (and maybe not to be made
-an input layer event source either, see below).
-
-3. If there is some other device driver *closer* to the actual hardware the
-user interacted with (the button/switch/key) to issue an input event, THAT is
-the device driver that should be issuing input events.
-
-E.g:
- [RFKILL slider switch] -- [GPIO hardware] -- [WLAN card rf-kill input]
- (platform driver) (wireless card driver)
-
-The user is closer to the RFKILL slide switch plaform driver, so the driver
-which must issue input events is the platform driver looking at the GPIO
-hardware, and NEVER the wireless card driver (which is just a slave). It is
-very likely that there are other leaves than just the WLAN card rf-kill input
-(e.g. a bluetooth card, etc)...
-
-On the other hand, some embedded devices do this:
-
- [RFKILL slider switch] -- [WLAN card rf-kill input]
- (wireless card driver)
-
-In this situation, the wireless card driver *could* register itself as an input
-device and issue rf-kill related input events... but in order to AVOID the need
-for DMI whitelisting, the wireless card driver does NOT do it. Userspace (HAL)
-or a platform driver (that exists only on these embedded devices) will do the
-dirty job of issuing the input events.
-
-
-COMMON MISTAKES in kernel drivers, related to rfkill:
-====================================
-
-1. NEVER confuse input device keys and buttons with input device switches.
-
- 1a. Switches are always set or reset. They report the current state
- (on position or off position).
-
- 1b. Keys and buttons are either in the pressed or not-pressed state, and
- that's it. A "button" that latches down when you press it, and
- unlatches when you press it again is in fact a switch as far as input
- devices go.
-
-Add the SW_* events you need for switches, do NOT try to emulate a button using
-KEY_* events just because there is no such SW_* event yet. Do NOT try to use,
-for example, KEY_BLUETOOTH when you should be using SW_BLUETOOTH instead.
-
-2. Input device switches (sources of EV_SW events) DO store their current state
-(so you *must* initialize it by issuing a gratuitous input layer event on
-driver start-up and also when resuming from sleep), and that state CAN be
-queried from userspace through IOCTLs. There is no sysfs interface for this,
-but that doesn't mean you should break things trying to hook it to the rfkill
-class to get a sysfs interface :-)
-
-3. Do not issue *_RFKILL_ALL events by default, unless you are sure it is the
-correct event for your switch/button. These events are emergency power-off
-events when they are trying to turn the transmitters off. An example of an
-input device which SHOULD generate *_RFKILL_ALL events is the wireless-kill
-switch in a laptop which is NOT a hotkey, but a real sliding/rocker switch.
-An example of an input device which SHOULD NOT generate *_RFKILL_ALL events by
-default, is any sort of hot key that is type-specific (e.g. the one for WLAN).
-
-
-3.1 Guidelines for wireless device drivers
-------------------------------------------
-
-(in this text, rfkill->foo means the foo field of struct rfkill).
-
-1. Each independent transmitter in a wireless device (usually there is only one
-transmitter per device) should have a SINGLE rfkill class attached to it.
-
-2. If the device does not have any sort of hardware assistance to allow the
-driver to rfkill the device, the driver should emulate it by taking all actions
-required to silence the transmitter.
-
-3. If it is impossible to silence the transmitter (i.e. it still emits energy,
-even if it is just in brief pulses, when there is no data to transmit and there
-is no hardware support to turn it off) do NOT lie to the users. Do not attach
-it to a rfkill class. The rfkill subsystem does not deal with data
-transmission, it deals with energy emission. If the transmitter is emitting
-energy, it is not blocked in rfkill terms.
-
-4. It doesn't matter if the device has multiple rfkill input lines affecting
-the same transmitter, their combined state is to be exported as a single state
-per transmitter (see rule 1).
-
-This rule exists because users of the rfkill subsystem expect to get (and set,
-when possible) the overall transmitter rfkill state, not of a particular rfkill
-line.
+The rfkill class is provided for kernel drivers to register their radio
+transmitter with the kernel, provide methods for turning it on and off and,
+optionally, letting the system know about hardware-disabled states that may
+be implemented on the device. This code is enabled with the CONFIG_RFKILL
+Kconfig option, which drivers can "select".
-5. The wireless device driver MUST NOT leave the transmitter enabled during
-suspend and hibernation unless:
+The rfkill class code also notifies userspace of state changes, this is
+achieved via uevents. It also provides some sysfs files for userspace to
+check the status of radio transmitters. See the "Userspace support" section
+below.
- 5.1. The transmitter has to be enabled for some sort of functionality
- like wake-on-wireless-packet or autonomous packed forwarding in a mesh
- network, and that functionality is enabled for this suspend/hibernation
- cycle.
-AND
+The rfkill-input code implements a basic response to rfkill buttons -- it
+implements turning on/off all devices of a certain class (or all).
- 5.2. The device was not on a user-requested BLOCKED state before
- the suspend (i.e. the driver must NOT unblock a device, not even
- to support wake-on-wireless-packet or remain in the mesh).
+When the device is hard-blocked (either by a call to rfkill_set_hw_state()
+or from query_hw_block) set_block() will be invoked but drivers can well
+ignore the method call since they can use the return value of the function
+rfkill_set_hw_state() to sync the software state instead of keeping track
+of calls to set_block().
-In other words, there is absolutely no allowed scenario where a driver can
-automatically take action to unblock a rfkill controller (obviously, this deals
-with scenarios where soft-blocking or both soft and hard blocking is happening.
-Scenarios where hardware rfkill lines are the only ones blocking the
-transmitter are outside of this rule, since the wireless device driver does not
-control its input hardware rfkill lines in the first place).
-6. During resume, rfkill will try to restore its previous state.
+The entire functionality is spread over more than one subsystem:
-7. After a rfkill class is suspended, it will *not* call rfkill->toggle_radio
-until it is resumed.
+ * The kernel input layer generates KEY_WWAN, KEY_WLAN etc. and
+ SW_RFKILL_ALL -- when the user presses a button. Drivers for radio
+ transmitters generally do not register to the input layer, unless the
+ device really provides an input device (i.e. a button that has no
+ effect other than generating a button press event)
+ * The rfkill-input code hooks up to these events and switches the soft-block
+ of the various radio transmitters, depending on the button type.
-Example of a WLAN wireless driver connected to the rfkill subsystem:
---------------------------------------------------------------------
+ * The rfkill drivers turn off/on their transmitters as requested.
-A certain WLAN card has one input pin that causes it to block the transmitter
-and makes the status of that input pin available (only for reading!) to the
-kernel driver. This is a hard rfkill input line (it cannot be overridden by
-the kernel driver).
+ * The rfkill class will generate userspace notifications (uevents) to tell
+ userspace what the current state is.
-The card also has one PCI register that, if manipulated by the driver, causes
-it to block the transmitter. This is a soft rfkill input line.
-It has also a thermal protection circuitry that shuts down its transmitter if
-the card overheats, and makes the status of that protection available (only for
-reading!) to the kernel driver. This is also a hard rfkill input line.
-If either one of these rfkill lines are active, the transmitter is blocked by
-the hardware and forced offline.
+3. Kernel driver guidelines
-The driver should allocate and attach to its struct device *ONE* instance of
-the rfkill class (there is only one transmitter).
-It can implement the get_state() hook, and return RFKILL_STATE_HARD_BLOCKED if
-either one of its two hard rfkill input lines are active. If the two hard
-rfkill lines are inactive, it must return RFKILL_STATE_SOFT_BLOCKED if its soft
-rfkill input line is active. Only if none of the rfkill input lines are
-active, will it return RFKILL_STATE_UNBLOCKED.
+Drivers for radio transmitters normally implement only the rfkill class.
+These drivers may not unblock the transmitter based on own decisions, they
+should act on information provided by the rfkill class only.
-Since the device has a hardware rfkill line, it IS subject to state changes
-external to rfkill. Therefore, the driver must make sure that it calls
-rfkill_force_state() to keep the status always up-to-date, and it must do a
-rfkill_force_state() on resume from sleep.
+Platform drivers might implement input devices if the rfkill button is just
+that, a button. If that button influences the hardware then you need to
+implement an rfkill class instead. This also applies if the platform provides
+a way to turn on/off the transmitter(s).
-Every time the driver gets a notification from the card that one of its rfkill
-lines changed state (polling might be needed on badly designed cards that don't
-generate interrupts for such events), it recomputes the rfkill state as per
-above, and calls rfkill_force_state() to update it.
+During suspend/hibernation, transmitters should only be left enabled when
+wake-on wlan or similar functionality requires it and the device wasn't
+blocked before suspend/hibernate. Note that it may be necessary to update
+the rfkill subsystem's idea of what the current state is at resume time if
+the state may have changed over suspend.
-The driver should implement the toggle_radio() hook, that:
-1. Returns an error if one of the hardware rfkill lines are active, and the
-caller asked for RFKILL_STATE_UNBLOCKED.
-2. Activates the soft rfkill line if the caller asked for state
-RFKILL_STATE_SOFT_BLOCKED. It should do this even if one of the hard rfkill
-lines are active, effectively double-blocking the transmitter.
-
-3. Deactivates the soft rfkill line if none of the hardware rfkill lines are
-active and the caller asked for RFKILL_STATE_UNBLOCKED.
-
-===============================================================================
-4: Kernel API
+4. Kernel API
To build a driver with rfkill subsystem support, the driver should depend on
-(or select) the Kconfig symbol RFKILL; it should _not_ depend on RKFILL_INPUT.
+(or select) the Kconfig symbol RFKILL.
The hardware the driver talks to may be write-only (where the current state
of the hardware is unknown), or read-write (where the hardware can be queried
about its current state).
-The rfkill class will call the get_state hook of a device every time it needs
-to know the *real* current state of the hardware. This can happen often, but
-it does not do any polling, so it is not enough on hardware that is subject
-to state changes outside of the rfkill subsystem.
-
-Therefore, calling rfkill_force_state() when a state change happens is
-mandatory when the device has a hardware rfkill line, or when something else
-like the firmware could cause its state to be changed without going through the
-rfkill class.
-
-Some hardware provides events when its status changes. In these cases, it is
-best for the driver to not provide a get_state hook, and instead register the
-rfkill class *already* with the correct status, and keep it updated using
-rfkill_force_state() when it gets an event from the hardware.
-
-rfkill_force_state() must be used on the device resume handlers to update the
-rfkill status, should there be any chance of the device status changing during
-the sleep.
-
-There is no provision for a statically-allocated rfkill struct. You must
-use rfkill_allocate() to allocate one.
-
-You should:
- - rfkill_allocate()
- - modify rfkill fields (flags, name)
- - modify state to the current hardware state (THIS IS THE ONLY TIME
- YOU CAN ACCESS state DIRECTLY)
- - rfkill_register()
+Calling rfkill_set_hw_state() when a state change happens is required from
+rfkill drivers that control devices that can be hard-blocked unless they also
+assign the poll_hw_block() callback (then the rfkill core will poll the
+device). Don't do this unless you cannot get the event in any other way.
-The only way to set a device to the RFKILL_STATE_HARD_BLOCKED state is through
-a suitable return of get_state() or through rfkill_force_state().
-When a device is in the RFKILL_STATE_HARD_BLOCKED state, the only way to switch
-it to a different state is through a suitable return of get_state() or through
-rfkill_force_state().
-If toggle_radio() is called to set a device to state RFKILL_STATE_SOFT_BLOCKED
-when that device is already at the RFKILL_STATE_HARD_BLOCKED state, it should
-not return an error. Instead, it should try to double-block the transmitter,
-so that its state will change from RFKILL_STATE_HARD_BLOCKED to
-RFKILL_STATE_SOFT_BLOCKED should the hardware blocking cease.
-
-Please refer to the source for more documentation.
-
-===============================================================================
-5: Userspace support
-
-rfkill devices issue uevents (with an action of "change"), with the following
-environment variables set:
-
-RFKILL_NAME
-RFKILL_STATE
-RFKILL_TYPE
+5. Userspace support
-The ABI for these variables is defined by the sysfs attributes. It is best
-to take a quick look at the source to make sure of the possible values.
-
-It is expected that HAL will trap those, and bridge them to DBUS, etc. These
-events CAN and SHOULD be used to give feedback to the user about the rfkill
-status of the system.
-
-Input devices may issue events that are related to rfkill. These are the
-various KEY_* events and SW_* events supported by rfkill-input.c.
-
-Userspace may not change the state of an rfkill switch in response to an
-input event, it should refrain from changing states entirely.
-
-Userspace cannot assume it is the only source of control for rfkill switches.
-Their state can change due to firmware actions, direct user actions, and the
-rfkill-input EPO override for *_RFKILL_ALL.
-
-When rfkill-input is not active, userspace must initiate a rfkill status
-change by writing to the "state" attribute in order for anything to happen.
-
-Take particular care to implement EV_SW SW_RFKILL_ALL properly. When that
-switch is set to OFF, *every* rfkill device *MUST* be immediately put into the
-RFKILL_STATE_SOFT_BLOCKED state, no questions asked.
-
-The following sysfs entries will be created:
+The following sysfs entries exist for every rfkill device:
name: Name assigned by driver to this key (interface or driver name).
type: Name of the key type ("wlan", "bluetooth", etc).
state: Current state of the transmitter
0: RFKILL_STATE_SOFT_BLOCKED
- transmitter is forced off, but one can override it
- by a write to the state attribute;
+ transmitter is turned off by software
1: RFKILL_STATE_UNBLOCKED
- transmiter is NOT forced off, and may operate if
- all other conditions for such operation are met
- (such as interface is up and configured, etc);
+ transmiter is (potentially) active
2: RFKILL_STATE_HARD_BLOCKED
transmitter is forced off by something outside of
- the driver's control. One cannot set a device to
- this state through writes to the state attribute;
- claim: 1: Userspace handles events, 0: Kernel handles events
-
-Both the "state" and "claim" entries are also writable. For the "state" entry
-this means that when 1 or 0 is written, the device rfkill state (if not yet in
-the requested state), will be will be toggled accordingly.
-
-For the "claim" entry writing 1 to it means that the kernel no longer handles
-key events even though RFKILL_INPUT input was enabled. When "claim" has been
-set to 0, userspace should make sure that it listens for the input events or
-check the sysfs "state" entry regularly to correctly perform the required tasks
-when the rkfill key is pressed.
-
-A note about input devices and EV_SW events:
-
-In order to know the current state of an input device switch (like
-SW_RFKILL_ALL), you will need to use an IOCTL. That information is not
-available through sysfs in a generic way at this time, and it is not available
-through the rfkill class AT ALL.
+ the driver's control.
+ claim: 0: Kernel handles events (currently always reads that value)
+
+rfkill devices also issue uevents (with an action of "change"), with the
+following environment variables set:
+
+RFKILL_NAME
+RFKILL_STATE
+RFKILL_TYPE
+
+The contents of these variables corresponds to the "name", "state" and
+"type" sysfs files explained above.
F: fs/reiserfs/
RFKILL
-P: Ivo van Doorn
-M: IvDoorn@gmail.com
-L: netdev@vger.kernel.org
+P: Johannes Berg
+M: johannes@sipsolutions.net
+L: linux-wireless@vger.kernel.org
S: Maintained
F Documentation/rfkill.txt
F: net/rfkill/
gpio_set_value(data->gpio_reset, 0);
}
-static int tosa_bt_toggle_radio(void *data, enum rfkill_state state)
+static int tosa_bt_set_block(void *data, bool blocked)
{
- pr_info("BT_RADIO going: %s\n",
- state == RFKILL_STATE_UNBLOCKED ? "on" : "off");
+ pr_info("BT_RADIO going: %s\n", blocked ? "off" : "on");
- if (state == RFKILL_STATE_UNBLOCKED) {
+ if (!blocked) {
pr_info("TOSA_BT: going ON\n");
tosa_bt_on(data);
} else {
pr_info("TOSA_BT: going OFF\n");
tosa_bt_off(data);
}
+
return 0;
}
+static const struct rfkill_ops tosa_bt_rfkill_ops = {
+ .set_block = tosa_bt_set_block,
+};
+
static int tosa_bt_probe(struct platform_device *dev)
{
int rc;
if (rc)
goto err_pwr_dir;
- rfk = rfkill_allocate(&dev->dev, RFKILL_TYPE_BLUETOOTH);
+ rfk = rfkill_alloc("tosa-bt", &dev->dev, RFKILL_TYPE_BLUETOOTH,
+ &tosa_bt_rfkill_ops, data);
if (!rfk) {
rc = -ENOMEM;
goto err_rfk_alloc;
}
- rfk->name = "tosa-bt";
- rfk->toggle_radio = tosa_bt_toggle_radio;
- rfk->data = data;
-#ifdef CONFIG_RFKILL_LEDS
- rfk->led_trigger.name = "tosa-bt";
-#endif
+ rfkill_set_led_trigger_name(rfk, "tosa-bt");
rc = rfkill_register(rfk);
if (rc)
return 0;
err_rfkill:
- if (rfk)
- rfkill_free(rfk);
- rfk = NULL;
+ rfkill_destroy(rfk);
err_rfk_alloc:
tosa_bt_off(data);
err_pwr_dir:
platform_set_drvdata(dev, NULL);
- if (rfk)
+ if (rfk) {
rfkill_unregister(rfk);
+ rfkill_destroy(rfk);
+ }
rfk = NULL;
tosa_bt_off(data);
#include <linux/input.h>
#include <linux/gpio.h>
#include <linux/pda_power.h>
-#include <linux/rfkill.h>
#include <linux/spi/spi.h>
#include <asm/setup.h>
return 0;
}
-static int hso_radio_toggle(void *data, enum rfkill_state state)
+static int hso_rfkill_set_block(void *data, bool blocked)
{
struct hso_device *hso_dev = data;
- int enabled = (state == RFKILL_STATE_UNBLOCKED);
+ int enabled = !blocked;
int rv;
mutex_lock(&hso_dev->mutex);
return rv;
}
+static const struct rfkill_ops hso_rfkill_ops = {
+ .set_block = hso_rfkill_set_block,
+};
+
/* Creates and sets up everything for rfkill */
static void hso_create_rfkill(struct hso_device *hso_dev,
struct usb_interface *interface)
struct device *dev = &hso_net->net->dev;
char *rfkn;
- hso_net->rfkill = rfkill_allocate(&interface_to_usbdev(interface)->dev,
- RFKILL_TYPE_WWAN);
- if (!hso_net->rfkill) {
- dev_err(dev, "%s - Out of memory\n", __func__);
- return;
- }
rfkn = kzalloc(20, GFP_KERNEL);
- if (!rfkn) {
- rfkill_free(hso_net->rfkill);
- hso_net->rfkill = NULL;
+ if (!rfkn)
dev_err(dev, "%s - Out of memory\n", __func__);
- return;
- }
+
snprintf(rfkn, 20, "hso-%d",
interface->altsetting->desc.bInterfaceNumber);
- hso_net->rfkill->name = rfkn;
- hso_net->rfkill->state = RFKILL_STATE_UNBLOCKED;
- hso_net->rfkill->data = hso_dev;
- hso_net->rfkill->toggle_radio = hso_radio_toggle;
+
+ hso_net->rfkill = rfkill_alloc(rfkn,
+ &interface_to_usbdev(interface)->dev,
+ RFKILL_TYPE_WWAN,
+ &hso_rfkill_ops, hso_dev);
+ if (!hso_net->rfkill) {
+ dev_err(dev, "%s - Out of memory\n", __func__);
+ kfree(rfkn);
+ return;
+ }
if (rfkill_register(hso_net->rfkill) < 0) {
+ rfkill_destroy(hso_net->rfkill);
kfree(rfkn);
- hso_net->rfkill->name = NULL;
- rfkill_free(hso_net->rfkill);
hso_net->rfkill = NULL;
dev_err(dev, "%s - Failed to register rfkill\n", __func__);
return;
hso_stop_net_device(network_table[i]);
cancel_work_sync(&network_table[i]->async_put_intf);
cancel_work_sync(&network_table[i]->async_get_intf);
- if (rfk)
+ if (rfk) {
rfkill_unregister(rfk);
+ rfkill_destroy(rfk);
+ }
hso_free_net_device(network_table[i]);
}
}
bool registered;
};
-/* Rfkill */
-#define ATH_RFKILL_POLL_INTERVAL 2000 /* msecs */
-
struct ath_rfkill {
struct rfkill *rfkill;
- struct delayed_work rfkill_poll;
+ struct rfkill_ops ops;
char rfkill_name[32];
};
#define SC_OP_RXFLUSH BIT(7)
#define SC_OP_LED_ASSOCIATED BIT(8)
#define SC_OP_RFKILL_REGISTERED BIT(9)
-#define SC_OP_RFKILL_SW_BLOCKED BIT(10)
-#define SC_OP_RFKILL_HW_BLOCKED BIT(11)
#define SC_OP_WAIT_FOR_BEACON BIT(12)
#define SC_OP_LED_ON BIT(13)
#define SC_OP_SCANNING BIT(14)
ah->rfkill_polarity;
}
-/* h/w rfkill poll function */
-static void ath_rfkill_poll(struct work_struct *work)
+/* s/w rfkill handlers */
+static int ath_rfkill_set_block(void *data, bool blocked)
{
- struct ath_softc *sc = container_of(work, struct ath_softc,
- rf_kill.rfkill_poll.work);
- bool radio_on;
-
- if (sc->sc_flags & SC_OP_INVALID)
- return;
-
- radio_on = !ath_is_rfkill_set(sc);
-
- /*
- * enable/disable radio only when there is a
- * state change in RF switch
- */
- if (radio_on == !!(sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED)) {
- enum rfkill_state state;
-
- if (sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED) {
- state = radio_on ? RFKILL_STATE_SOFT_BLOCKED
- : RFKILL_STATE_HARD_BLOCKED;
- } else if (radio_on) {
- ath_radio_enable(sc);
- state = RFKILL_STATE_UNBLOCKED;
- } else {
- ath_radio_disable(sc);
- state = RFKILL_STATE_HARD_BLOCKED;
- }
-
- if (state == RFKILL_STATE_HARD_BLOCKED)
- sc->sc_flags |= SC_OP_RFKILL_HW_BLOCKED;
- else
- sc->sc_flags &= ~SC_OP_RFKILL_HW_BLOCKED;
+ struct ath_softc *sc = data;
- rfkill_force_state(sc->rf_kill.rfkill, state);
- }
+ if (blocked)
+ ath_radio_disable(sc);
+ else
+ ath_radio_enable(sc);
- queue_delayed_work(sc->hw->workqueue, &sc->rf_kill.rfkill_poll,
- msecs_to_jiffies(ATH_RFKILL_POLL_INTERVAL));
+ return 0;
}
-/* s/w rfkill handler */
-static int ath_sw_toggle_radio(void *data, enum rfkill_state state)
+static void ath_rfkill_poll_state(struct rfkill *rfkill, void *data)
{
struct ath_softc *sc = data;
+ bool blocked = !!ath_is_rfkill_set(sc);
- switch (state) {
- case RFKILL_STATE_SOFT_BLOCKED:
- if (!(sc->sc_flags & (SC_OP_RFKILL_HW_BLOCKED |
- SC_OP_RFKILL_SW_BLOCKED)))
- ath_radio_disable(sc);
- sc->sc_flags |= SC_OP_RFKILL_SW_BLOCKED;
- return 0;
- case RFKILL_STATE_UNBLOCKED:
- if ((sc->sc_flags & SC_OP_RFKILL_SW_BLOCKED)) {
- sc->sc_flags &= ~SC_OP_RFKILL_SW_BLOCKED;
- if (sc->sc_flags & SC_OP_RFKILL_HW_BLOCKED) {
- DPRINTF(sc, ATH_DBG_FATAL, "Can't turn on the"
- "radio as it is disabled by h/w\n");
- return -EPERM;
- }
- ath_radio_enable(sc);
- }
- return 0;
- default:
- return -EINVAL;
- }
+ if (rfkill_set_hw_state(rfkill, blocked))
+ ath_radio_disable(sc);
+ else
+ ath_radio_enable(sc);
}
/* Init s/w rfkill */
static int ath_init_sw_rfkill(struct ath_softc *sc)
{
- sc->rf_kill.rfkill = rfkill_allocate(wiphy_dev(sc->hw->wiphy),
- RFKILL_TYPE_WLAN);
+ sc->rf_kill.ops.set_block = ath_rfkill_set_block;
+ if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
+ sc->rf_kill.ops.poll = ath_rfkill_poll_state;
+
+ snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name),
+ "ath9k-%s::rfkill", wiphy_name(sc->hw->wiphy));
+
+ sc->rf_kill.rfkill = rfkill_alloc(sc->rf_kill.rfkill_name,
+ wiphy_dev(sc->hw->wiphy),
+ RFKILL_TYPE_WLAN,
+ &sc->rf_kill.ops, sc);
if (!sc->rf_kill.rfkill) {
DPRINTF(sc, ATH_DBG_FATAL, "Failed to allocate rfkill\n");
return -ENOMEM;
}
- snprintf(sc->rf_kill.rfkill_name, sizeof(sc->rf_kill.rfkill_name),
- "ath9k-%s::rfkill", wiphy_name(sc->hw->wiphy));
- sc->rf_kill.rfkill->name = sc->rf_kill.rfkill_name;
- sc->rf_kill.rfkill->data = sc;
- sc->rf_kill.rfkill->toggle_radio = ath_sw_toggle_radio;
- sc->rf_kill.rfkill->state = RFKILL_STATE_UNBLOCKED;
-
return 0;
}
/* Deinitialize rfkill */
static void ath_deinit_rfkill(struct ath_softc *sc)
{
- if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
- cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
-
if (sc->sc_flags & SC_OP_RFKILL_REGISTERED) {
rfkill_unregister(sc->rf_kill.rfkill);
+ rfkill_destroy(sc->rf_kill.rfkill);
sc->sc_flags &= ~SC_OP_RFKILL_REGISTERED;
- sc->rf_kill.rfkill = NULL;
}
}
static int ath_start_rfkill_poll(struct ath_softc *sc)
{
- if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
- queue_delayed_work(sc->hw->workqueue,
- &sc->rf_kill.rfkill_poll, 0);
-
if (!(sc->sc_flags & SC_OP_RFKILL_REGISTERED)) {
if (rfkill_register(sc->rf_kill.rfkill)) {
DPRINTF(sc, ATH_DBG_FATAL,
"Unable to register rfkill\n");
- rfkill_free(sc->rf_kill.rfkill);
+ rfkill_destroy(sc->rf_kill.rfkill);
/* Deinitialize the device */
ath_cleanup(sc);
goto error_attach;
#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
- /* Initialze h/w Rfkill */
- if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
- INIT_DELAYED_WORK(&sc->rf_kill.rfkill_poll, ath_rfkill_poll);
-
/* Initialize s/w rfkill */
error = ath_init_sw_rfkill(sc);
if (error)
} else
sc->rx.rxlink = NULL;
-#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
- if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
- cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
-#endif
+ rfkill_pause_polling(sc->rf_kill.rfkill);
+
/* disable HAL and put h/w to sleep */
ath9k_hw_disable(sc->sc_ah);
ath9k_hw_configpcipowersave(sc->sc_ah, 1);
ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
-#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
- if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
- cancel_delayed_work_sync(&sc->rf_kill.rfkill_poll);
-#endif
-
pci_save_state(pdev);
pci_disable_device(pdev);
pci_set_power_state(pdev, PCI_D3hot);
AR_GPIO_OUTPUT_MUX_AS_OUTPUT);
ath9k_hw_set_gpio(sc->sc_ah, ATH_LED_PIN, 1);
-#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
- /*
- * check the h/w rfkill state on resume
- * and start the rfkill poll timer
- */
- if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_RFSILENT)
- queue_delayed_work(sc->hw->workqueue,
- &sc->rf_kill.rfkill_poll, 0);
-#endif
-
return 0;
}
# if it's possible.
config B43_RFKILL
bool
- depends on B43 && (RFKILL = y || RFKILL = B43) && RFKILL_INPUT && (INPUT_POLLDEV = y || INPUT_POLLDEV = B43)
+ depends on B43 && (RFKILL = y || RFKILL = B43)
default y
# This config option automatically enables b43 HW-RNG support,
}
static int b43_register_led(struct b43_wldev *dev, struct b43_led *led,
- const char *name, char *default_trigger,
+ const char *name, const char *default_trigger,
u8 led_index, bool activelow)
{
int err;
if (!!conf->radio_enabled != phy->radio_on) {
if (conf->radio_enabled) {
- b43_software_rfkill(dev, RFKILL_STATE_UNBLOCKED);
+ b43_software_rfkill(dev, false);
b43info(dev->wl, "Radio turned on by software\n");
if (!dev->radio_hw_enable) {
b43info(dev->wl, "The hardware RF-kill button "
"Press the button to turn it on.\n");
}
} else {
- b43_software_rfkill(dev, RFKILL_STATE_SOFT_BLOCKED);
+ b43_software_rfkill(dev, true);
b43info(dev->wl, "Radio turned off by software\n");
}
}
}
static void b43_aphy_op_software_rfkill(struct b43_wldev *dev,
- enum rfkill_state state)
+ bool blocked)
{
struct b43_phy *phy = &dev->phy;
- if (state == RFKILL_STATE_UNBLOCKED) {
+ if (!blocked) {
if (phy->radio_on)
return;
b43_radio_write16(dev, 0x0004, 0x00C0);
phy->channel = ops->get_default_chan(dev);
- ops->software_rfkill(dev, RFKILL_STATE_UNBLOCKED);
+ ops->software_rfkill(dev, false);
err = ops->init(dev);
if (err) {
b43err(dev->wl, "PHY init failed\n");
if (ops->exit)
ops->exit(dev);
err_block_rf:
- ops->software_rfkill(dev, RFKILL_STATE_SOFT_BLOCKED);
+ ops->software_rfkill(dev, true);
return err;
}
{
const struct b43_phy_operations *ops = dev->phy.ops;
- ops->software_rfkill(dev, RFKILL_STATE_SOFT_BLOCKED);
+ ops->software_rfkill(dev, true);
if (ops->exit)
ops->exit(dev);
}
return err;
}
-void b43_software_rfkill(struct b43_wldev *dev, enum rfkill_state state)
+void b43_software_rfkill(struct b43_wldev *dev, bool blocked)
{
struct b43_phy *phy = &dev->phy;
- if (state == RFKILL_STATE_HARD_BLOCKED) {
- /* We cannot hardware-block the device */
- state = RFKILL_STATE_SOFT_BLOCKED;
- }
-
b43_mac_suspend(dev);
- phy->ops->software_rfkill(dev, state);
- phy->radio_on = (state == RFKILL_STATE_UNBLOCKED);
+ phy->ops->software_rfkill(dev, blocked);
+ phy->radio_on = !blocked;
b43_mac_enable(dev);
}
/* Radio */
bool (*supports_hwpctl)(struct b43_wldev *dev);
- void (*software_rfkill)(struct b43_wldev *dev, enum rfkill_state state);
+ void (*software_rfkill)(struct b43_wldev *dev, bool blocked);
void (*switch_analog)(struct b43_wldev *dev, bool on);
int (*switch_channel)(struct b43_wldev *dev, unsigned int new_channel);
unsigned int (*get_default_chan)(struct b43_wldev *dev);
/**
* b43_software_rfkill - Turn the radio ON or OFF in software.
*/
-void b43_software_rfkill(struct b43_wldev *dev, enum rfkill_state state);
+void b43_software_rfkill(struct b43_wldev *dev, bool blocked);
/**
* b43_phy_txpower_check - Check TX power output.
}
static void b43_gphy_op_software_rfkill(struct b43_wldev *dev,
- enum rfkill_state state)
+ bool blocked)
{
struct b43_phy *phy = &dev->phy;
struct b43_phy_g *gphy = phy->g;
might_sleep();
- if (state == RFKILL_STATE_UNBLOCKED) {
+ if (!blocked) {
/* Turn radio ON */
if (phy->radio_on)
return;
}
static void b43_lpphy_op_software_rfkill(struct b43_wldev *dev,
- enum rfkill_state state)
+ bool blocked)
{
//TODO
}
}
static void b43_nphy_op_software_rfkill(struct b43_wldev *dev,
- enum rfkill_state state)
+ bool blocked)
{//TODO
}
}
/* The poll callback for the hardware button. */
-static void b43_rfkill_poll(struct input_polled_dev *poll_dev)
+static void b43_rfkill_poll(struct rfkill *rfkill, void *data)
{
- struct b43_wldev *dev = poll_dev->private;
+ struct b43_wldev *dev = data;
struct b43_wl *wl = dev->wl;
bool enabled;
- bool report_change = 0;
mutex_lock(&wl->mutex);
if (unlikely(b43_status(dev) < B43_STAT_INITIALIZED)) {
enabled = b43_is_hw_radio_enabled(dev);
if (unlikely(enabled != dev->radio_hw_enable)) {
dev->radio_hw_enable = enabled;
- report_change = 1;
b43info(wl, "Radio hardware status changed to %s\n",
enabled ? "ENABLED" : "DISABLED");
+ enabled = !rfkill_set_hw_state(rfkill, !enabled);
+ if (enabled != dev->phy.radio_on)
+ b43_software_rfkill(dev, !enabled);
}
mutex_unlock(&wl->mutex);
-
- /* send the radio switch event to the system - note both a key press
- * and a release are required */
- if (unlikely(report_change)) {
- input_report_key(poll_dev->input, KEY_WLAN, 1);
- input_report_key(poll_dev->input, KEY_WLAN, 0);
- }
}
/* Called when the RFKILL toggled in software. */
-static int b43_rfkill_soft_toggle(void *data, enum rfkill_state state)
+static int b43_rfkill_soft_set(void *data, bool blocked)
{
struct b43_wldev *dev = data;
struct b43_wl *wl = dev->wl;
- int err = -EBUSY;
+ int err = -EINVAL;
- if (!wl->rfkill.registered)
- return 0;
+ if (WARN_ON(!wl->rfkill.registered))
+ return -EINVAL;
mutex_lock(&wl->mutex);
+
if (b43_status(dev) < B43_STAT_INITIALIZED)
goto out_unlock;
+
+ if (!dev->radio_hw_enable)
+ goto out_unlock;
+
+ if (!blocked != dev->phy.radio_on)
+ b43_software_rfkill(dev, blocked);
err = 0;
- switch (state) {
- case RFKILL_STATE_UNBLOCKED:
- if (!dev->radio_hw_enable) {
- /* No luck. We can't toggle the hardware RF-kill
- * button from software. */
- err = -EBUSY;
- goto out_unlock;
- }
- if (!dev->phy.radio_on)
- b43_software_rfkill(dev, state);
- break;
- case RFKILL_STATE_SOFT_BLOCKED:
- if (dev->phy.radio_on)
- b43_software_rfkill(dev, state);
- break;
- default:
- b43warn(wl, "Received unexpected rfkill state %d.\n", state);
- break;
- }
out_unlock:
mutex_unlock(&wl->mutex);
-
return err;
}
-char *b43_rfkill_led_name(struct b43_wldev *dev)
+const char *b43_rfkill_led_name(struct b43_wldev *dev)
{
struct b43_rfkill *rfk = &(dev->wl->rfkill);
if (!rfk->registered)
return NULL;
- return rfkill_get_led_name(rfk->rfkill);
+ return rfkill_get_led_trigger_name(rfk->rfkill);
}
+static const struct rfkill_ops b43_rfkill_ops = {
+ .set_block = b43_rfkill_soft_set,
+ .poll = b43_rfkill_poll,
+};
+
void b43_rfkill_init(struct b43_wldev *dev)
{
struct b43_wl *wl = dev->wl;
rfk->registered = 0;
- rfk->rfkill = rfkill_allocate(dev->dev->dev, RFKILL_TYPE_WLAN);
- if (!rfk->rfkill)
- goto out_error;
snprintf(rfk->name, sizeof(rfk->name),
"b43-%s", wiphy_name(wl->hw->wiphy));
- rfk->rfkill->name = rfk->name;
- rfk->rfkill->state = RFKILL_STATE_UNBLOCKED;
- rfk->rfkill->data = dev;
- rfk->rfkill->toggle_radio = b43_rfkill_soft_toggle;
-
- rfk->poll_dev = input_allocate_polled_device();
- if (!rfk->poll_dev) {
- rfkill_free(rfk->rfkill);
- goto err_freed_rfk;
- }
-
- rfk->poll_dev->private = dev;
- rfk->poll_dev->poll = b43_rfkill_poll;
- rfk->poll_dev->poll_interval = 1000; /* msecs */
- rfk->poll_dev->input->name = rfk->name;
- rfk->poll_dev->input->id.bustype = BUS_HOST;
- rfk->poll_dev->input->id.vendor = dev->dev->bus->boardinfo.vendor;
- rfk->poll_dev->input->evbit[0] = BIT(EV_KEY);
- set_bit(KEY_WLAN, rfk->poll_dev->input->keybit);
+ rfk->rfkill = rfkill_alloc(rfk->name,
+ dev->dev->dev,
+ RFKILL_TYPE_WLAN,
+ &b43_rfkill_ops, dev);
+ if (!rfk->rfkill)
+ goto out_error;
err = rfkill_register(rfk->rfkill);
if (err)
- goto err_free_polldev;
-
-#ifdef CONFIG_RFKILL_INPUT_MODULE
- /* B43 RF-kill isn't useful without the rfkill-input subsystem.
- * Try to load the module. */
- err = request_module("rfkill-input");
- if (err)
- b43warn(wl, "Failed to load the rfkill-input module. "
- "The built-in radio LED will not work.\n");
-#endif /* CONFIG_RFKILL_INPUT */
-
-#if !defined(CONFIG_RFKILL_INPUT) && !defined(CONFIG_RFKILL_INPUT_MODULE)
- b43warn(wl, "The rfkill-input subsystem is not available. "
- "The built-in radio LED will not work.\n");
-#endif
-
- err = input_register_polled_device(rfk->poll_dev);
- if (err)
- goto err_unreg_rfk;
+ goto err_free;
rfk->registered = 1;
return;
-err_unreg_rfk:
- rfkill_unregister(rfk->rfkill);
-err_free_polldev:
- input_free_polled_device(rfk->poll_dev);
- rfk->poll_dev = NULL;
-err_freed_rfk:
- rfk->rfkill = NULL;
-out_error:
+ err_free:
+ rfkill_destroy(rfk->rfkill);
+ out_error:
rfk->registered = 0;
b43warn(wl, "RF-kill button init failed\n");
}
return;
rfk->registered = 0;
- input_unregister_polled_device(rfk->poll_dev);
rfkill_unregister(rfk->rfkill);
- input_free_polled_device(rfk->poll_dev);
- rfk->poll_dev = NULL;
+ rfkill_destroy(rfk->rfkill);
rfk->rfkill = NULL;
}
#ifdef CONFIG_B43_RFKILL
#include <linux/rfkill.h>
-#include <linux/input-polldev.h>
struct b43_rfkill {
/* The RFKILL subsystem data structure */
struct rfkill *rfkill;
- /* The poll device for the RFKILL input button */
- struct input_polled_dev *poll_dev;
/* Did initialization succeed? Used for freeing. */
bool registered;
/* The unique name of this rfkill switch */
void b43_rfkill_init(struct b43_wldev *dev);
void b43_rfkill_exit(struct b43_wldev *dev);
-char * b43_rfkill_led_name(struct b43_wldev *dev);
+const char *b43_rfkill_led_name(struct b43_wldev *dev);
#else /* CONFIG_B43_RFKILL */
# if it's possible.
config B43LEGACY_RFKILL
bool
- depends on B43LEGACY && (RFKILL = y || RFKILL = B43LEGACY) && RFKILL_INPUT && (INPUT_POLLDEV = y || INPUT_POLLDEV = B43LEGACY)
+ depends on B43LEGACY && (RFKILL = y || RFKILL = B43LEGACY)
default y
# This config option automatically enables b43 HW-RNG support,
static int b43legacy_register_led(struct b43legacy_wldev *dev,
struct b43legacy_led *led,
- const char *name, char *default_trigger,
+ const char *name,
+ const char *default_trigger,
u8 led_index, bool activelow)
{
int err;
}
/* The poll callback for the hardware button. */
-static void b43legacy_rfkill_poll(struct input_polled_dev *poll_dev)
+static void b43legacy_rfkill_poll(struct rfkill *rfkill, void *data)
{
- struct b43legacy_wldev *dev = poll_dev->private;
+ struct b43legacy_wldev *dev = data;
struct b43legacy_wl *wl = dev->wl;
bool enabled;
- bool report_change = 0;
mutex_lock(&wl->mutex);
if (unlikely(b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)) {
enabled = b43legacy_is_hw_radio_enabled(dev);
if (unlikely(enabled != dev->radio_hw_enable)) {
dev->radio_hw_enable = enabled;
- report_change = 1;
b43legacyinfo(wl, "Radio hardware status changed to %s\n",
enabled ? "ENABLED" : "DISABLED");
+ enabled = !rfkill_set_hw_state(rfkill, !enabled);
+ if (enabled != dev->phy.radio_on) {
+ if (enabled)
+ b43legacy_radio_turn_on(dev);
+ else
+ b43legacy_radio_turn_off(dev, 0);
+ }
}
mutex_unlock(&wl->mutex);
-
- /* send the radio switch event to the system - note both a key press
- * and a release are required */
- if (unlikely(report_change)) {
- input_report_key(poll_dev->input, KEY_WLAN, 1);
- input_report_key(poll_dev->input, KEY_WLAN, 0);
- }
}
/* Called when the RFKILL toggled in software.
* This is called without locking. */
-static int b43legacy_rfkill_soft_toggle(void *data, enum rfkill_state state)
+static int b43legacy_rfkill_soft_set(void *data, bool blocked)
{
struct b43legacy_wldev *dev = data;
struct b43legacy_wl *wl = dev->wl;
- int err = -EBUSY;
+ int ret = -EINVAL;
if (!wl->rfkill.registered)
- return 0;
+ return -EINVAL;
mutex_lock(&wl->mutex);
if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)
goto out_unlock;
- err = 0;
- switch (state) {
- case RFKILL_STATE_UNBLOCKED:
- if (!dev->radio_hw_enable) {
- /* No luck. We can't toggle the hardware RF-kill
- * button from software. */
- err = -EBUSY;
- goto out_unlock;
- }
- if (!dev->phy.radio_on)
+
+ if (!dev->radio_hw_enable)
+ goto out_unlock;
+
+ if (!blocked != dev->phy.radio_on) {
+ if (!blocked)
b43legacy_radio_turn_on(dev);
- break;
- case RFKILL_STATE_SOFT_BLOCKED:
- if (dev->phy.radio_on)
+ else
b43legacy_radio_turn_off(dev, 0);
- break;
- default:
- b43legacywarn(wl, "Received unexpected rfkill state %d.\n",
- state);
- break;
}
+ ret = 0;
out_unlock:
mutex_unlock(&wl->mutex);
-
- return err;
+ return ret;
}
-char *b43legacy_rfkill_led_name(struct b43legacy_wldev *dev)
+const char *b43legacy_rfkill_led_name(struct b43legacy_wldev *dev)
{
struct b43legacy_rfkill *rfk = &(dev->wl->rfkill);
if (!rfk->registered)
return NULL;
- return rfkill_get_led_name(rfk->rfkill);
+ return rfkill_get_led_trigger_name(rfk->rfkill);
}
+static const struct rfkill_ops b43legacy_rfkill_ops = {
+ .set_block = b43legacy_rfkill_soft_set,
+ .poll = b43legacy_rfkill_poll,
+};
+
void b43legacy_rfkill_init(struct b43legacy_wldev *dev)
{
struct b43legacy_wl *wl = dev->wl;
rfk->registered = 0;
- rfk->rfkill = rfkill_allocate(dev->dev->dev, RFKILL_TYPE_WLAN);
- if (!rfk->rfkill)
- goto out_error;
snprintf(rfk->name, sizeof(rfk->name),
"b43legacy-%s", wiphy_name(wl->hw->wiphy));
- rfk->rfkill->name = rfk->name;
- rfk->rfkill->state = RFKILL_STATE_UNBLOCKED;
- rfk->rfkill->data = dev;
- rfk->rfkill->toggle_radio = b43legacy_rfkill_soft_toggle;
-
- rfk->poll_dev = input_allocate_polled_device();
- if (!rfk->poll_dev) {
- rfkill_free(rfk->rfkill);
- goto err_freed_rfk;
- }
-
- rfk->poll_dev->private = dev;
- rfk->poll_dev->poll = b43legacy_rfkill_poll;
- rfk->poll_dev->poll_interval = 1000; /* msecs */
-
- rfk->poll_dev->input->name = rfk->name;
- rfk->poll_dev->input->id.bustype = BUS_HOST;
- rfk->poll_dev->input->id.vendor = dev->dev->bus->boardinfo.vendor;
- rfk->poll_dev->input->evbit[0] = BIT(EV_KEY);
- set_bit(KEY_WLAN, rfk->poll_dev->input->keybit);
+ rfk->rfkill = rfkill_alloc(rfk->name,
+ dev->dev->dev,
+ RFKILL_TYPE_WLAN,
+ &b43legacy_rfkill_ops, dev);
+ if (!rfk->rfkill)
+ goto out_error;
err = rfkill_register(rfk->rfkill);
if (err)
- goto err_free_polldev;
-
-#ifdef CONFIG_RFKILL_INPUT_MODULE
- /* B43legacy RF-kill isn't useful without the rfkill-input subsystem.
- * Try to load the module. */
- err = request_module("rfkill-input");
- if (err)
- b43legacywarn(wl, "Failed to load the rfkill-input module."
- "The built-in radio LED will not work.\n");
-#endif /* CONFIG_RFKILL_INPUT */
-
- err = input_register_polled_device(rfk->poll_dev);
- if (err)
- goto err_unreg_rfk;
+ goto err_free;
rfk->registered = 1;
return;
-err_unreg_rfk:
- rfkill_unregister(rfk->rfkill);
-err_free_polldev:
- input_free_polled_device(rfk->poll_dev);
- rfk->poll_dev = NULL;
-err_freed_rfk:
- rfk->rfkill = NULL;
-out_error:
+ err_free:
+ rfkill_destroy(rfk->rfkill);
+ out_error:
rfk->registered = 0;
b43legacywarn(wl, "RF-kill button init failed\n");
}
return;
rfk->registered = 0;
- input_unregister_polled_device(rfk->poll_dev);
rfkill_unregister(rfk->rfkill);
- input_free_polled_device(rfk->poll_dev);
- rfk->poll_dev = NULL;
+ rfkill_destroy(rfk->rfkill);
rfk->rfkill = NULL;
}
#ifdef CONFIG_B43LEGACY_RFKILL
#include <linux/rfkill.h>
-#include <linux/workqueue.h>
-#include <linux/input-polldev.h>
struct b43legacy_rfkill {
/* The RFKILL subsystem data structure */
struct rfkill *rfkill;
- /* The poll device for the RFKILL input button */
- struct input_polled_dev *poll_dev;
/* Did initialization succeed? Used for freeing. */
bool registered;
/* The unique name of this rfkill switch */
void b43legacy_rfkill_init(struct b43legacy_wldev *dev);
void b43legacy_rfkill_exit(struct b43legacy_wldev *dev);
-char *b43legacy_rfkill_led_name(struct b43legacy_wldev *dev);
+const char *b43legacy_rfkill_led_name(struct b43legacy_wldev *dev);
#else /* CONFIG_B43LEGACY_RFKILL */
select FW_LOADER
select MAC80211_LEDS if IWLWIFI_LEDS
select LEDS_CLASS if IWLWIFI_LEDS
- select RFKILL if IWLWIFI_RFKILL
config IWLWIFI_LEDS
bool "Enable LED support in iwlagn and iwl3945 drivers"
depends on IWLWIFI
config IWLWIFI_RFKILL
- bool "Enable RF kill support in iwlagn and iwl3945 drivers"
- depends on IWLWIFI
+ def_bool y
+ depends on IWLWIFI && RFKILL
config IWLWIFI_SPECTRUM_MEASUREMENT
bool "Enable Spectrum Measurement in iwlagn driver"
#include "iwl-core.h"
/* software rf-kill from user */
-static int iwl_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
+static int iwl_rfkill_soft_rf_kill(void *data, bool blocked)
{
struct iwl_priv *priv = data;
- int err = 0;
if (!priv->rfkill)
- return 0;
+ return -EINVAL;
if (test_bit(STATUS_EXIT_PENDING, &priv->status))
return 0;
- IWL_DEBUG_RF_KILL(priv, "we received soft RFKILL set to state %d\n", state);
+ IWL_DEBUG_RF_KILL(priv, "received soft RFKILL: block=%d\n", blocked);
+
mutex_lock(&priv->mutex);
- switch (state) {
- case RFKILL_STATE_UNBLOCKED:
- if (iwl_is_rfkill_hw(priv)) {
- err = -EBUSY;
- goto out_unlock;
- }
+ if (iwl_is_rfkill_hw(priv))
+ goto out_unlock;
+
+ if (!blocked)
iwl_radio_kill_sw_enable_radio(priv);
- break;
- case RFKILL_STATE_SOFT_BLOCKED:
+ else
iwl_radio_kill_sw_disable_radio(priv);
- break;
- default:
- IWL_WARN(priv, "we received unexpected RFKILL state %d\n",
- state);
- break;
- }
+
out_unlock:
mutex_unlock(&priv->mutex);
-
- return err;
+ return 0;
}
+static const struct rfkill_ops iwl_rfkill_ops = {
+ .set_block = iwl_rfkill_soft_rf_kill,
+};
+
int iwl_rfkill_init(struct iwl_priv *priv)
{
struct device *device = wiphy_dev(priv->hw->wiphy);
BUG_ON(device == NULL);
IWL_DEBUG_RF_KILL(priv, "Initializing RFKILL.\n");
- priv->rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
+ priv->rfkill = rfkill_alloc(priv->cfg->name,
+ device,
+ RFKILL_TYPE_WLAN,
+ &iwl_rfkill_ops, priv);
if (!priv->rfkill) {
IWL_ERR(priv, "Unable to allocate RFKILL device.\n");
ret = -ENOMEM;
goto error;
}
- priv->rfkill->name = priv->cfg->name;
- priv->rfkill->data = priv;
- priv->rfkill->state = RFKILL_STATE_UNBLOCKED;
- priv->rfkill->toggle_radio = iwl_rfkill_soft_rf_kill;
-
- priv->rfkill->dev.class->suspend = NULL;
- priv->rfkill->dev.class->resume = NULL;
-
ret = rfkill_register(priv->rfkill);
if (ret) {
IWL_ERR(priv, "Unable to register RFKILL: %d\n", ret);
}
IWL_DEBUG_RF_KILL(priv, "RFKILL initialization complete.\n");
- return ret;
+ return 0;
free_rfkill:
- if (priv->rfkill != NULL)
- rfkill_free(priv->rfkill);
+ rfkill_destroy(priv->rfkill);
priv->rfkill = NULL;
error:
void iwl_rfkill_unregister(struct iwl_priv *priv)
{
- if (priv->rfkill)
+ if (priv->rfkill) {
rfkill_unregister(priv->rfkill);
+ rfkill_destroy(priv->rfkill);
+ }
priv->rfkill = NULL;
}
if (!priv->rfkill)
return;
- if (iwl_is_rfkill_hw(priv)) {
- rfkill_force_state(priv->rfkill, RFKILL_STATE_HARD_BLOCKED);
- return;
- }
-
- if (!iwl_is_rfkill_sw(priv))
- rfkill_force_state(priv->rfkill, RFKILL_STATE_UNBLOCKED);
+ if (rfkill_set_hw_state(priv->rfkill,
+ !!iwl_is_rfkill_hw(priv)))
+ iwl_radio_kill_sw_disable_radio(priv);
else
- rfkill_force_state(priv->rfkill, RFKILL_STATE_SOFT_BLOCKED);
+ iwl_radio_kill_sw_enable_radio(priv);
}
EXPORT_SYMBOL(iwl_rfkill_set_hw_state);
#include "iwm.h"
-static int iwm_rfkill_soft_toggle(void *data, enum rfkill_state state)
+static int iwm_rfkill_set_block(void *data, bool blocked)
{
struct iwm_priv *iwm = data;
- switch (state) {
- case RFKILL_STATE_UNBLOCKED:
+ if (!blocked) {
if (test_bit(IWM_RADIO_RFKILL_HW, &iwm->radio))
return -EBUSY;
if (test_and_clear_bit(IWM_RADIO_RFKILL_SW, &iwm->radio) &&
(iwm_to_ndev(iwm)->flags & IFF_UP))
- iwm_up(iwm);
-
- break;
- case RFKILL_STATE_SOFT_BLOCKED:
+ return iwm_up(iwm);
+ } else {
if (!test_and_set_bit(IWM_RADIO_RFKILL_SW, &iwm->radio))
- iwm_down(iwm);
-
- break;
- default:
- break;
+ return iwm_down(iwm);
}
return 0;
}
+static const struct rfkill_ops iwm_rfkill_ops = {
+ .set_block = iwm_rfkill_set_block,
+};
+
int iwm_rfkill_init(struct iwm_priv *iwm)
{
int ret;
- iwm->rfkill = rfkill_allocate(iwm_to_dev(iwm), RFKILL_TYPE_WLAN);
+ iwm->rfkill = rfkill_alloc(KBUILD_MODNAME,
+ iwm_to_dev(iwm),
+ RFKILL_TYPE_WLAN,
+ &iwm_rfkill_ops, iwm);
if (!iwm->rfkill) {
IWM_ERR(iwm, "Unable to allocate rfkill device\n");
return -ENOMEM;
}
- iwm->rfkill->name = KBUILD_MODNAME;
- iwm->rfkill->data = iwm;
- iwm->rfkill->state = RFKILL_STATE_UNBLOCKED;
- iwm->rfkill->toggle_radio = iwm_rfkill_soft_toggle;
-
ret = rfkill_register(iwm->rfkill);
if (ret) {
IWM_ERR(iwm, "Failed to register rfkill device\n");
return 0;
fail:
- rfkill_free(iwm->rfkill);
+ rfkill_destroy(iwm->rfkill);
return ret;
}
void iwm_rfkill_exit(struct iwm_priv *iwm)
{
- if (iwm->rfkill)
+ if (iwm->rfkill) {
rfkill_unregister(iwm->rfkill);
-
- rfkill_free(iwm->rfkill);
+ rfkill_destroy(iwm->rfkill);
+ }
iwm->rfkill = NULL;
}
depends on NEW_LEDS
depends on BACKLIGHT_CLASS_DEVICE
depends on SERIO_I8042
- depends on RFKILL
+ depends on RFKILL || RFKILL = n
select ACPI_WMI
---help---
This is a driver for newer Acer (and Wistron) laptops. It adds
depends on DCDBAS
depends on EXPERIMENTAL
depends on BACKLIGHT_CLASS_DEVICE
- depends on RFKILL
+ depends on RFKILL || RFKILL = n
depends on POWER_SUPPLY
default n
---help---
tristate "HP WMI extras"
depends on ACPI_WMI
depends on INPUT
- depends on RFKILL
+ depends on RFKILL || RFKILL = n
help
Say Y here if you want to support WMI-based hotkeys on HP laptops and
to read data from WMI such as docking or ambient light sensor state.
tristate "ThinkPad ACPI Laptop Extras"
depends on ACPI
depends on INPUT
+ depends on RFKILL || RFKILL = n
select BACKLIGHT_LCD_SUPPORT
select BACKLIGHT_CLASS_DEVICE
select HWMON
select NVRAM
select NEW_LEDS
select LEDS_CLASS
- select NET
- select RFKILL
---help---
This is a driver for the IBM and Lenovo ThinkPad laptops. It adds
support for Fn-Fx key combinations, Bluetooth control, video
depends on ACPI
depends on INPUT
depends on EXPERIMENTAL
+ depends on RFKILL || RFKILL = n
select BACKLIGHT_CLASS_DEVICE
select HWMON
- select RFKILL
---help---
This driver supports the Fn-Fx keys on Eee PC laptops.
It also adds the ability to switch camera/wlan on/off.
tristate "Toshiba Laptop Extras"
depends on ACPI
depends on INPUT
+ depends on RFKILL || RFKILL = n
select INPUT_POLLDEV
- select NET
- select RFKILL
select BACKLIGHT_CLASS_DEVICE
---help---
This driver adds support for access to certain system settings
status = get_u32(&state, ACER_CAP_WIRELESS);
if (ACPI_SUCCESS(status))
- rfkill_force_state(wireless_rfkill, state ?
- RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED);
+ rfkill_set_sw_state(wireless_rfkill, !!state);
if (has_cap(ACER_CAP_BLUETOOTH)) {
status = get_u32(&state, ACER_CAP_BLUETOOTH);
if (ACPI_SUCCESS(status))
- rfkill_force_state(bluetooth_rfkill, state ?
- RFKILL_STATE_UNBLOCKED :
- RFKILL_STATE_SOFT_BLOCKED);
+ rfkill_set_sw_state(bluetooth_rfkill, !!state);
}
schedule_delayed_work(&acer_rfkill_work, round_jiffies_relative(HZ));
}
-static int acer_rfkill_set(void *data, enum rfkill_state state)
+static int acer_rfkill_set(void *data, bool blocked)
{
acpi_status status;
- u32 *cap = data;
- status = set_u32((u32) (state == RFKILL_STATE_UNBLOCKED), *cap);
+ u32 cap = (unsigned long)data;
+ status = set_u32(!!blocked, cap);
if (ACPI_FAILURE(status))
return -ENODEV;
return 0;
}
-static struct rfkill * acer_rfkill_register(struct device *dev,
-enum rfkill_type type, char *name, u32 cap)
+static const struct rfkill_ops acer_rfkill_ops = {
+ .set_block = acer_rfkill_set,
+};
+
+static struct rfkill *acer_rfkill_register(struct device *dev,
+ enum rfkill_type type,
+ char *name, u32 cap)
{
int err;
u32 state;
- u32 *data;
struct rfkill *rfkill_dev;
- rfkill_dev = rfkill_allocate(dev, type);
+ rfkill_dev = rfkill_alloc(name, dev, type,
+ &acer_rfkill_ops,
+ (void *)(unsigned long)cap);
if (!rfkill_dev)
return ERR_PTR(-ENOMEM);
- rfkill_dev->name = name;
get_u32(&state, cap);
- rfkill_dev->state = state ? RFKILL_STATE_UNBLOCKED :
- RFKILL_STATE_SOFT_BLOCKED;
- data = kzalloc(sizeof(u32), GFP_KERNEL);
- if (!data) {
- rfkill_free(rfkill_dev);
- return ERR_PTR(-ENOMEM);
- }
- *data = cap;
- rfkill_dev->data = data;
- rfkill_dev->toggle_radio = acer_rfkill_set;
+ rfkill_set_sw_state(rfkill_dev, !state);
err = rfkill_register(rfkill_dev);
if (err) {
- kfree(rfkill_dev->data);
- rfkill_free(rfkill_dev);
+ rfkill_destroy(rfkill_dev);
return ERR_PTR(err);
}
return rfkill_dev;
RFKILL_TYPE_BLUETOOTH, "acer-bluetooth",
ACER_CAP_BLUETOOTH);
if (IS_ERR(bluetooth_rfkill)) {
- kfree(wireless_rfkill->data);
rfkill_unregister(wireless_rfkill);
+ rfkill_destroy(wireless_rfkill);
return PTR_ERR(bluetooth_rfkill);
}
}
static void acer_rfkill_exit(void)
{
cancel_delayed_work_sync(&acer_rfkill_work);
- kfree(wireless_rfkill->data);
+
rfkill_unregister(wireless_rfkill);
+ rfkill_destroy(wireless_rfkill);
+
if (has_cap(ACER_CAP_BLUETOOTH)) {
- kfree(bluetooth_rfkill->data);
rfkill_unregister(bluetooth_rfkill);
+ rfkill_destroy(bluetooth_rfkill);
}
return;
}
result[3]: NVRAM format version number
*/
-static int dell_rfkill_set(int radio, enum rfkill_state state)
+static int dell_rfkill_set(void *data, bool blocked)
{
struct calling_interface_buffer buffer;
- int disable = (state == RFKILL_STATE_UNBLOCKED) ? 0 : 1;
+ int disable = blocked ? 0 : 1;
+ unsigned long radio = (unsigned long)data;
memset(&buffer, 0, sizeof(struct calling_interface_buffer));
buffer.input[0] = (1 | (radio<<8) | (disable << 16));
return 0;
}
-static int dell_wifi_set(void *data, enum rfkill_state state)
-{
- return dell_rfkill_set(1, state);
-}
-
-static int dell_bluetooth_set(void *data, enum rfkill_state state)
-{
- return dell_rfkill_set(2, state);
-}
-
-static int dell_wwan_set(void *data, enum rfkill_state state)
-{
- return dell_rfkill_set(3, state);
-}
-
-static int dell_rfkill_get(int bit, enum rfkill_state *state)
+static void dell_rfkill_query(struct rfkill *rfkill, void *data)
{
struct calling_interface_buffer buffer;
int status;
- int new_state = RFKILL_STATE_HARD_BLOCKED;
+ int bit = (unsigned long)data + 16;
memset(&buffer, 0, sizeof(struct calling_interface_buffer));
dell_send_request(&buffer, 17, 11);
status = buffer.output[1];
- if (status & (1<<16))
- new_state = RFKILL_STATE_SOFT_BLOCKED;
-
- if (status & (1<<bit))
- *state = new_state;
- else
- *state = RFKILL_STATE_UNBLOCKED;
-
- return 0;
-}
-
-static int dell_wifi_get(void *data, enum rfkill_state *state)
-{
- return dell_rfkill_get(17, state);
-}
-
-static int dell_bluetooth_get(void *data, enum rfkill_state *state)
-{
- return dell_rfkill_get(18, state);
+ if (status & BIT(bit))
+ rfkill_set_hw_state(rfkill, !!(status & BIT(16)));
}
-static int dell_wwan_get(void *data, enum rfkill_state *state)
-{
- return dell_rfkill_get(19, state);
-}
+static const struct rfkill_ops dell_rfkill_ops = {
+ .set_block = dell_rfkill_set,
+ .query = dell_rfkill_query,
+};
static int dell_setup_rfkill(void)
{
status = buffer.output[1];
if ((status & (1<<2|1<<8)) == (1<<2|1<<8)) {
- wifi_rfkill = rfkill_allocate(NULL, RFKILL_TYPE_WLAN);
- if (!wifi_rfkill)
+ wifi_rfkill = rfkill_alloc("dell-wifi", NULL, RFKILL_TYPE_WLAN,
+ &dell_rfkill_ops, (void *) 1);
+ if (!wifi_rfkill) {
+ ret = -ENOMEM;
goto err_wifi;
- wifi_rfkill->name = "dell-wifi";
- wifi_rfkill->toggle_radio = dell_wifi_set;
- wifi_rfkill->get_state = dell_wifi_get;
+ }
ret = rfkill_register(wifi_rfkill);
if (ret)
goto err_wifi;
}
if ((status & (1<<3|1<<9)) == (1<<3|1<<9)) {
- bluetooth_rfkill = rfkill_allocate(NULL, RFKILL_TYPE_BLUETOOTH);
- if (!bluetooth_rfkill)
+ bluetooth_rfkill = rfkill_alloc("dell-bluetooth", NULL,
+ RFKILL_TYPE_BLUETOOTH,
+ &dell_rfkill_ops, (void *) 2);
+ if (!bluetooth_rfkill) {
+ ret = -ENOMEM;
goto err_bluetooth;
- bluetooth_rfkill->name = "dell-bluetooth";
- bluetooth_rfkill->toggle_radio = dell_bluetooth_set;
- bluetooth_rfkill->get_state = dell_bluetooth_get;
+ }
ret = rfkill_register(bluetooth_rfkill);
if (ret)
goto err_bluetooth;
}
if ((status & (1<<4|1<<10)) == (1<<4|1<<10)) {
- wwan_rfkill = rfkill_allocate(NULL, RFKILL_TYPE_WWAN);
- if (!wwan_rfkill)
+ wwan_rfkill = rfkill_alloc("dell-wwan", NULL, RFKILL_TYPE_WWAN,
+ &dell_rfkill_ops, (void *) 3);
+ if (!wwan_rfkill) {
+ ret = -ENOMEM;
goto err_wwan;
- wwan_rfkill->name = "dell-wwan";
- wwan_rfkill->toggle_radio = dell_wwan_set;
- wwan_rfkill->get_state = dell_wwan_get;
+ }
ret = rfkill_register(wwan_rfkill);
if (ret)
goto err_wwan;
return 0;
err_wwan:
- if (wwan_rfkill)
- rfkill_free(wwan_rfkill);
- if (bluetooth_rfkill) {
+ rfkill_destroy(wwan_rfkill);
+ if (bluetooth_rfkill)
rfkill_unregister(bluetooth_rfkill);
- bluetooth_rfkill = NULL;
- }
err_bluetooth:
- if (bluetooth_rfkill)
- rfkill_free(bluetooth_rfkill);
- if (wifi_rfkill) {
+ rfkill_destroy(bluetooth_rfkill);
+ if (wifi_rfkill)
rfkill_unregister(wifi_rfkill);
- wifi_rfkill = NULL;
- }
err_wifi:
- if (wifi_rfkill)
- rfkill_free(wifi_rfkill);
+ rfkill_destroy(wifi_rfkill);
return ret;
}
* Rfkill helpers
*/
-static int eeepc_wlan_rfkill_set(void *data, enum rfkill_state state)
-{
- if (state == RFKILL_STATE_SOFT_BLOCKED)
- return set_acpi(CM_ASL_WLAN, 0);
- else
- return set_acpi(CM_ASL_WLAN, 1);
-}
-
-static int eeepc_wlan_rfkill_state(void *data, enum rfkill_state *state)
+static bool eeepc_wlan_rfkill_blocked(void)
{
if (get_acpi(CM_ASL_WLAN) == 1)
- *state = RFKILL_STATE_UNBLOCKED;
- else
- *state = RFKILL_STATE_SOFT_BLOCKED;
- return 0;
+ return false;
+ return true;
}
-static int eeepc_bluetooth_rfkill_set(void *data, enum rfkill_state state)
+static int eeepc_rfkill_set(void *data, bool blocked)
{
- if (state == RFKILL_STATE_SOFT_BLOCKED)
- return set_acpi(CM_ASL_BLUETOOTH, 0);
- else
- return set_acpi(CM_ASL_BLUETOOTH, 1);
+ unsigned long asl = (unsigned long)data;
+ return set_acpi(asl, !blocked);
}
-static int eeepc_bluetooth_rfkill_state(void *data, enum rfkill_state *state)
-{
- if (get_acpi(CM_ASL_BLUETOOTH) == 1)
- *state = RFKILL_STATE_UNBLOCKED;
- else
- *state = RFKILL_STATE_SOFT_BLOCKED;
- return 0;
-}
+static const struct rfkill_ops eeepc_rfkill_ops = {
+ .set_block = eeepc_rfkill_set,
+};
/*
* Sys helpers
static void eeepc_rfkill_notify(acpi_handle handle, u32 event, void *data)
{
- enum rfkill_state state;
struct pci_dev *dev;
struct pci_bus *bus = pci_find_bus(0, 1);
+ bool blocked;
if (event != ACPI_NOTIFY_BUS_CHECK)
return;
return;
}
- eeepc_wlan_rfkill_state(ehotk->eeepc_wlan_rfkill, &state);
-
- if (state == RFKILL_STATE_UNBLOCKED) {
+ blocked = eeepc_wlan_rfkill_blocked();
+ if (!blocked) {
dev = pci_get_slot(bus, 0);
if (dev) {
/* Device already present */
}
}
- rfkill_force_state(ehotk->eeepc_wlan_rfkill, state);
+ rfkill_set_sw_state(ehotk->eeepc_wlan_rfkill, blocked);
}
static void eeepc_hotk_notify(acpi_handle handle, u32 event, void *data)
eeepc_register_rfkill_notifier("\\_SB.PCI0.P0P7");
if (get_acpi(CM_ASL_WLAN) != -1) {
- ehotk->eeepc_wlan_rfkill = rfkill_allocate(&device->dev,
- RFKILL_TYPE_WLAN);
+ ehotk->eeepc_wlan_rfkill = rfkill_alloc("eeepc-wlan",
+ &device->dev,
+ RFKILL_TYPE_WLAN,
+ &eeepc_rfkill_ops,
+ (void *)CM_ASL_WLAN);
if (!ehotk->eeepc_wlan_rfkill)
goto wlan_fail;
- ehotk->eeepc_wlan_rfkill->name = "eeepc-wlan";
- ehotk->eeepc_wlan_rfkill->toggle_radio = eeepc_wlan_rfkill_set;
- ehotk->eeepc_wlan_rfkill->get_state = eeepc_wlan_rfkill_state;
- if (get_acpi(CM_ASL_WLAN) == 1) {
- ehotk->eeepc_wlan_rfkill->state =
- RFKILL_STATE_UNBLOCKED;
- rfkill_set_default(RFKILL_TYPE_WLAN,
- RFKILL_STATE_UNBLOCKED);
- } else {
- ehotk->eeepc_wlan_rfkill->state =
- RFKILL_STATE_SOFT_BLOCKED;
- rfkill_set_default(RFKILL_TYPE_WLAN,
- RFKILL_STATE_SOFT_BLOCKED);
- }
+ rfkill_set_global_sw_state(RFKILL_TYPE_WLAN,
+ get_acpi(CM_ASL_WLAN) != 1);
result = rfkill_register(ehotk->eeepc_wlan_rfkill);
if (result)
goto wlan_fail;
if (get_acpi(CM_ASL_BLUETOOTH) != -1) {
ehotk->eeepc_bluetooth_rfkill =
- rfkill_allocate(&device->dev, RFKILL_TYPE_BLUETOOTH);
+ rfkill_alloc("eeepc-bluetooth",
+ &device->dev,
+ RFKILL_TYPE_BLUETOOTH,
+ &eeepc_rfkill_ops,
+ (void *)CM_ASL_BLUETOOTH);
if (!ehotk->eeepc_bluetooth_rfkill)
goto bluetooth_fail;
- ehotk->eeepc_bluetooth_rfkill->name = "eeepc-bluetooth";
- ehotk->eeepc_bluetooth_rfkill->toggle_radio =
- eeepc_bluetooth_rfkill_set;
- ehotk->eeepc_bluetooth_rfkill->get_state =
- eeepc_bluetooth_rfkill_state;
- if (get_acpi(CM_ASL_BLUETOOTH) == 1) {
- ehotk->eeepc_bluetooth_rfkill->state =
- RFKILL_STATE_UNBLOCKED;
- rfkill_set_default(RFKILL_TYPE_BLUETOOTH,
- RFKILL_STATE_UNBLOCKED);
- } else {
- ehotk->eeepc_bluetooth_rfkill->state =
- RFKILL_STATE_SOFT_BLOCKED;
- rfkill_set_default(RFKILL_TYPE_BLUETOOTH,
- RFKILL_STATE_SOFT_BLOCKED);
- }
-
+ rfkill_set_global_sw_state(RFKILL_TYPE_BLUETOOTH,
+ get_acpi(CM_ASL_BLUETOOTH) != 1);
result = rfkill_register(ehotk->eeepc_bluetooth_rfkill);
if (result)
goto bluetooth_fail;
return 0;
bluetooth_fail:
- if (ehotk->eeepc_bluetooth_rfkill)
- rfkill_free(ehotk->eeepc_bluetooth_rfkill);
+ rfkill_destroy(ehotk->eeepc_bluetooth_rfkill);
rfkill_unregister(ehotk->eeepc_wlan_rfkill);
- ehotk->eeepc_wlan_rfkill = NULL;
wlan_fail:
- if (ehotk->eeepc_wlan_rfkill)
- rfkill_free(ehotk->eeepc_wlan_rfkill);
+ rfkill_destroy(ehotk->eeepc_wlan_rfkill);
eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P6");
eeepc_unregister_rfkill_notifier("\\_SB.PCI0.P0P7");
ehotk_fail:
return hp_wmi_perform_query(HPWMI_DOCK_QUERY, 0, 0);
}
-static int hp_wmi_wifi_set(void *data, enum rfkill_state state)
+static int hp_wmi_set_block(void *data, bool blocked)
{
- if (state)
- return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x101);
- else
- return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x100);
-}
+ unsigned long b = (unsigned long) data;
+ int query = BIT(b + 8) | ((!!blocked) << b);
-static int hp_wmi_bluetooth_set(void *data, enum rfkill_state state)
-{
- if (state)
- return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x202);
- else
- return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x200);
+ return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, query);
}
-static int hp_wmi_wwan_set(void *data, enum rfkill_state state)
-{
- if (state)
- return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x404);
- else
- return hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, 0x400);
-}
+static const struct rfkill_ops hp_wmi_rfkill_ops = {
+ .set_block = hp_wmi_set_block,
+};
-static int hp_wmi_wifi_state(void)
+static bool hp_wmi_wifi_state(void)
{
int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
if (wireless & 0x100)
- return RFKILL_STATE_UNBLOCKED;
+ return false;
else
- return RFKILL_STATE_SOFT_BLOCKED;
+ return true;
}
-static int hp_wmi_bluetooth_state(void)
+static bool hp_wmi_bluetooth_state(void)
{
int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
if (wireless & 0x10000)
- return RFKILL_STATE_UNBLOCKED;
+ return false;
else
- return RFKILL_STATE_SOFT_BLOCKED;
+ return true;
}
-static int hp_wmi_wwan_state(void)
+static bool hp_wmi_wwan_state(void)
{
int wireless = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 0, 0);
if (wireless & 0x1000000)
- return RFKILL_STATE_UNBLOCKED;
+ return false;
else
- return RFKILL_STATE_SOFT_BLOCKED;
+ return true;
}
static ssize_t show_display(struct device *dev, struct device_attribute *attr,
}
} else if (eventcode == 0x5) {
if (wifi_rfkill)
- rfkill_force_state(wifi_rfkill,
- hp_wmi_wifi_state());
+ rfkill_set_sw_state(wifi_rfkill,
+ hp_wmi_wifi_state());
if (bluetooth_rfkill)
- rfkill_force_state(bluetooth_rfkill,
- hp_wmi_bluetooth_state());
+ rfkill_set_sw_state(bluetooth_rfkill,
+ hp_wmi_bluetooth_state());
if (wwan_rfkill)
- rfkill_force_state(wwan_rfkill,
- hp_wmi_wwan_state());
+ rfkill_set_sw_state(wwan_rfkill,
+ hp_wmi_wwan_state());
} else
printk(KERN_INFO "HP WMI: Unknown key pressed - %x\n",
eventcode);
goto add_sysfs_error;
if (wireless & 0x1) {
- wifi_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WLAN);
- wifi_rfkill->name = "hp-wifi";
- wifi_rfkill->state = hp_wmi_wifi_state();
- wifi_rfkill->toggle_radio = hp_wmi_wifi_set;
+ wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
+ RFKILL_TYPE_WLAN,
+ &hp_wmi_rfkill_ops,
+ (void *) 0);
+ rfkill_set_sw_state(wifi_rfkill, hp_wmi_wifi_state());
err = rfkill_register(wifi_rfkill);
if (err)
- goto add_sysfs_error;
+ goto register_wifi_error;
}
if (wireless & 0x2) {
- bluetooth_rfkill = rfkill_allocate(&device->dev,
- RFKILL_TYPE_BLUETOOTH);
- bluetooth_rfkill->name = "hp-bluetooth";
- bluetooth_rfkill->state = hp_wmi_bluetooth_state();
- bluetooth_rfkill->toggle_radio = hp_wmi_bluetooth_set;
+ bluetooth_rfkill = rfkill_alloc("hp-bluetooth", &device->dev,
+ RFKILL_TYPE_BLUETOOTH,
+ &hp_wmi_rfkill_ops,
+ (void *) 1);
+ rfkill_set_sw_state(bluetooth_rfkill,
+ hp_wmi_bluetooth_state());
err = rfkill_register(bluetooth_rfkill);
if (err)
goto register_bluetooth_error;
}
if (wireless & 0x4) {
- wwan_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WWAN);
- wwan_rfkill->name = "hp-wwan";
- wwan_rfkill->state = hp_wmi_wwan_state();
- wwan_rfkill->toggle_radio = hp_wmi_wwan_set;
+ wwan_rfkill = rfkill_alloc("hp-wwan", &device->dev,
+ RFKILL_TYPE_WWAN,
+ &hp_wmi_rfkill_ops,
+ (void *) 2);
+ rfkill_set_sw_state(wwan_rfkill, hp_wmi_wwan_state());
err = rfkill_register(wwan_rfkill);
if (err)
goto register_wwan_err;
return 0;
register_wwan_err:
+ rfkill_destroy(wwan_rfkill);
if (bluetooth_rfkill)
rfkill_unregister(bluetooth_rfkill);
register_bluetooth_error:
+ rfkill_destroy(bluetooth_rfkill);
if (wifi_rfkill)
rfkill_unregister(wifi_rfkill);
+register_wifi_error:
+ rfkill_destroy(wifi_rfkill);
add_sysfs_error:
cleanup_sysfs(device);
return err;
{
cleanup_sysfs(device);
- if (wifi_rfkill)
+ if (wifi_rfkill) {
rfkill_unregister(wifi_rfkill);
- if (bluetooth_rfkill)
+ rfkill_destroy(wifi_rfkill);
+ }
+ if (bluetooth_rfkill) {
rfkill_unregister(bluetooth_rfkill);
- if (wwan_rfkill)
+ rfkill_destroy(wifi_rfkill);
+ }
+ if (wwan_rfkill) {
rfkill_unregister(wwan_rfkill);
+ rfkill_destroy(wwan_rfkill);
+ }
return 0;
}
SONY_BLUETOOTH,
SONY_WWAN,
SONY_WIMAX,
- SONY_RFKILL_MAX,
+ N_SONY_RFKILL,
};
-static struct rfkill *sony_rfkill_devices[SONY_RFKILL_MAX];
-static int sony_rfkill_address[SONY_RFKILL_MAX] = {0x300, 0x500, 0x700, 0x900};
+static struct rfkill *sony_rfkill_devices[N_SONY_RFKILL];
+static int sony_rfkill_address[N_SONY_RFKILL] = {0x300, 0x500, 0x700, 0x900};
static void sony_nc_rfkill_update(void);
/*********** Input Devices ***********/
{
int i;
- for (i = 0; i < SONY_RFKILL_MAX; i++) {
- if (sony_rfkill_devices[i])
+ for (i = 0; i < N_SONY_RFKILL; i++) {
+ if (sony_rfkill_devices[i]) {
rfkill_unregister(sony_rfkill_devices[i]);
+ rfkill_destroy(sony_rfkill_devices[i]);
+ }
}
}
-static int sony_nc_rfkill_get(void *data, enum rfkill_state *state)
-{
- int result;
- int argument = sony_rfkill_address[(long) data];
-
- sony_call_snc_handle(0x124, 0x200, &result);
- if (result & 0x1) {
- sony_call_snc_handle(0x124, argument, &result);
- if (result & 0xf)
- *state = RFKILL_STATE_UNBLOCKED;
- else
- *state = RFKILL_STATE_SOFT_BLOCKED;
- } else {
- *state = RFKILL_STATE_HARD_BLOCKED;
- }
-
- return 0;
-}
-
-static int sony_nc_rfkill_set(void *data, enum rfkill_state state)
+static int sony_nc_rfkill_set(void *data, bool blocked)
{
int result;
int argument = sony_rfkill_address[(long) data] + 0x100;
- if (state == RFKILL_STATE_UNBLOCKED)
+ if (!blocked)
argument |= 0xff0000;
return sony_call_snc_handle(0x124, argument, &result);
}
-static int sony_nc_setup_wifi_rfkill(struct acpi_device *device)
-{
- int err = 0;
- struct rfkill *sony_wifi_rfkill;
-
- sony_wifi_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WLAN);
- if (!sony_wifi_rfkill)
- return -1;
- sony_wifi_rfkill->name = "sony-wifi";
- sony_wifi_rfkill->toggle_radio = sony_nc_rfkill_set;
- sony_wifi_rfkill->get_state = sony_nc_rfkill_get;
- sony_wifi_rfkill->data = (void *)SONY_WIFI;
- err = rfkill_register(sony_wifi_rfkill);
- if (err)
- rfkill_free(sony_wifi_rfkill);
- else {
- sony_rfkill_devices[SONY_WIFI] = sony_wifi_rfkill;
- sony_nc_rfkill_set(sony_wifi_rfkill->data,
- RFKILL_STATE_UNBLOCKED);
- }
- return err;
-}
+static const struct rfkill_ops sony_rfkill_ops = {
+ .set_block = sony_nc_rfkill_set,
+};
-static int sony_nc_setup_bluetooth_rfkill(struct acpi_device *device)
+static int sony_nc_setup_rfkill(struct acpi_device *device,
+ enum sony_nc_rfkill nc_type)
{
int err = 0;
- struct rfkill *sony_bluetooth_rfkill;
-
- sony_bluetooth_rfkill = rfkill_allocate(&device->dev,
- RFKILL_TYPE_BLUETOOTH);
- if (!sony_bluetooth_rfkill)
- return -1;
- sony_bluetooth_rfkill->name = "sony-bluetooth";
- sony_bluetooth_rfkill->toggle_radio = sony_nc_rfkill_set;
- sony_bluetooth_rfkill->get_state = sony_nc_rfkill_get;
- sony_bluetooth_rfkill->data = (void *)SONY_BLUETOOTH;
- err = rfkill_register(sony_bluetooth_rfkill);
- if (err)
- rfkill_free(sony_bluetooth_rfkill);
- else {
- sony_rfkill_devices[SONY_BLUETOOTH] = sony_bluetooth_rfkill;
- sony_nc_rfkill_set(sony_bluetooth_rfkill->data,
- RFKILL_STATE_UNBLOCKED);
+ struct rfkill *rfk;
+ enum rfkill_type type;
+ const char *name;
+
+ switch (nc_type) {
+ case SONY_WIFI:
+ type = RFKILL_TYPE_WLAN;
+ name = "sony-wifi";
+ break;
+ case SONY_BLUETOOTH:
+ type = RFKILL_TYPE_BLUETOOTH;
+ name = "sony-bluetooth";
+ break;
+ case SONY_WWAN:
+ type = RFKILL_TYPE_WWAN;
+ name = "sony-wwan";
+ break;
+ case SONY_WIMAX:
+ type = RFKILL_TYPE_WIMAX;
+ name = "sony-wimax";
+ break;
+ default:
+ return -EINVAL;
}
- return err;
-}
-static int sony_nc_setup_wwan_rfkill(struct acpi_device *device)
-{
- int err = 0;
- struct rfkill *sony_wwan_rfkill;
+ rfk = rfkill_alloc(name, &device->dev, type,
+ &sony_rfkill_ops, (void *)nc_type);
+ if (!rfk)
+ return -ENOMEM;
- sony_wwan_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WWAN);
- if (!sony_wwan_rfkill)
- return -1;
- sony_wwan_rfkill->name = "sony-wwan";
- sony_wwan_rfkill->toggle_radio = sony_nc_rfkill_set;
- sony_wwan_rfkill->get_state = sony_nc_rfkill_get;
- sony_wwan_rfkill->data = (void *)SONY_WWAN;
- err = rfkill_register(sony_wwan_rfkill);
- if (err)
- rfkill_free(sony_wwan_rfkill);
- else {
- sony_rfkill_devices[SONY_WWAN] = sony_wwan_rfkill;
- sony_nc_rfkill_set(sony_wwan_rfkill->data,
- RFKILL_STATE_UNBLOCKED);
+ err = rfkill_register(rfk);
+ if (err) {
+ rfkill_destroy(rfk);
+ return err;
}
+ sony_rfkill_devices[nc_type] = rfk;
+ sony_nc_rfkill_set((void *)nc_type, false);
return err;
}
-static int sony_nc_setup_wimax_rfkill(struct acpi_device *device)
+static void sony_nc_rfkill_update()
{
- int err = 0;
- struct rfkill *sony_wimax_rfkill;
+ enum sony_nc_rfkill i;
+ int result;
+ bool hwblock;
- sony_wimax_rfkill = rfkill_allocate(&device->dev, RFKILL_TYPE_WIMAX);
- if (!sony_wimax_rfkill)
- return -1;
- sony_wimax_rfkill->name = "sony-wimax";
- sony_wimax_rfkill->toggle_radio = sony_nc_rfkill_set;
- sony_wimax_rfkill->get_state = sony_nc_rfkill_get;
- sony_wimax_rfkill->data = (void *)SONY_WIMAX;
- err = rfkill_register(sony_wimax_rfkill);
- if (err)
- rfkill_free(sony_wimax_rfkill);
- else {
- sony_rfkill_devices[SONY_WIMAX] = sony_wimax_rfkill;
- sony_nc_rfkill_set(sony_wimax_rfkill->data,
- RFKILL_STATE_UNBLOCKED);
- }
- return err;
-}
+ sony_call_snc_handle(0x124, 0x200, &result);
+ hwblock = !(result & 0x1);
-static void sony_nc_rfkill_update()
-{
- int i;
- enum rfkill_state state;
+ for (i = 0; i < N_SONY_RFKILL; i++) {
+ int argument = sony_rfkill_address[i];
- for (i = 0; i < SONY_RFKILL_MAX; i++) {
- if (sony_rfkill_devices[i]) {
- sony_rfkill_devices[i]->
- get_state(sony_rfkill_devices[i]->data,
- &state);
- rfkill_force_state(sony_rfkill_devices[i], state);
+ if (!sony_rfkill_devices[i])
+ continue;
+
+ if (hwblock) {
+ if (rfkill_set_hw_state(sony_rfkill_devices[i], true))
+ sony_nc_rfkill_set(sony_rfkill_devices[i],
+ true);
+ continue;
}
+
+ sony_call_snc_handle(0x124, argument, &result);
+ rfkill_set_states(sony_rfkill_devices[i],
+ !(result & 0xf), false);
}
}
}
if (result & 0x1)
- sony_nc_setup_wifi_rfkill(device);
+ sony_nc_setup_rfkill(device, SONY_WIFI);
if (result & 0x2)
- sony_nc_setup_bluetooth_rfkill(device);
+ sony_nc_setup_rfkill(device, SONY_BLUETOOTH);
if (result & 0x1c)
- sony_nc_setup_wwan_rfkill(device);
+ sony_nc_setup_rfkill(device, SONY_WWAN);
if (result & 0x20)
- sony_nc_setup_wimax_rfkill(device);
+ sony_nc_setup_rfkill(device, SONY_WIMAX);
return 0;
}
#define TPACPI_MAX_ACPI_ARGS 3
-/* rfkill switches */
-enum {
- TPACPI_RFK_BLUETOOTH_SW_ID = 0,
- TPACPI_RFK_WWAN_SW_ID,
- TPACPI_RFK_UWB_SW_ID,
-};
-
/* printk headers */
#define TPACPI_LOG TPACPI_FILE ": "
#define TPACPI_EMERG KERN_EMERG TPACPI_LOG
return 0;
}
-static int __init tpacpi_new_rfkill(const unsigned int id,
- struct rfkill **rfk,
+static void printk_deprecated_attribute(const char * const what,
+ const char * const details)
+{
+ tpacpi_log_usertask("deprecated sysfs attribute");
+ printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and "
+ "will be removed. %s\n",
+ what, details);
+}
+
+/*************************************************************************
+ * rfkill and radio control support helpers
+ */
+
+/*
+ * ThinkPad-ACPI firmware handling model:
+ *
+ * WLSW (master wireless switch) is event-driven, and is common to all
+ * firmware-controlled radios. It cannot be controlled, just monitored,
+ * as expected. It overrides all radio state in firmware
+ *
+ * The kernel, a masked-off hotkey, and WLSW can change the radio state
+ * (TODO: verify how WLSW interacts with the returned radio state).
+ *
+ * The only time there are shadow radio state changes, is when
+ * masked-off hotkeys are used.
+ */
+
+/*
+ * Internal driver API for radio state:
+ *
+ * int: < 0 = error, otherwise enum tpacpi_rfkill_state
+ * bool: true means radio blocked (off)
+ */
+enum tpacpi_rfkill_state {
+ TPACPI_RFK_RADIO_OFF = 0,
+ TPACPI_RFK_RADIO_ON
+};
+
+/* rfkill switches */
+enum tpacpi_rfk_id {
+ TPACPI_RFK_BLUETOOTH_SW_ID = 0,
+ TPACPI_RFK_WWAN_SW_ID,
+ TPACPI_RFK_UWB_SW_ID,
+ TPACPI_RFK_SW_MAX
+};
+
+static const char *tpacpi_rfkill_names[] = {
+ [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth",
+ [TPACPI_RFK_WWAN_SW_ID] = "wwan",
+ [TPACPI_RFK_UWB_SW_ID] = "uwb",
+ [TPACPI_RFK_SW_MAX] = NULL
+};
+
+/* ThinkPad-ACPI rfkill subdriver */
+struct tpacpi_rfk {
+ struct rfkill *rfkill;
+ enum tpacpi_rfk_id id;
+ const struct tpacpi_rfk_ops *ops;
+};
+
+struct tpacpi_rfk_ops {
+ /* firmware interface */
+ int (*get_status)(void);
+ int (*set_status)(const enum tpacpi_rfkill_state);
+};
+
+static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX];
+
+/* Query FW and update rfkill sw state for a given rfkill switch */
+static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk)
+{
+ int status;
+
+ if (!tp_rfk)
+ return -ENODEV;
+
+ status = (tp_rfk->ops->get_status)();
+ if (status < 0)
+ return status;
+
+ rfkill_set_sw_state(tp_rfk->rfkill,
+ (status == TPACPI_RFK_RADIO_OFF));
+
+ return status;
+}
+
+/* Query FW and update rfkill sw state for all rfkill switches */
+static void tpacpi_rfk_update_swstate_all(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < TPACPI_RFK_SW_MAX; i++)
+ tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[i]);
+}
+
+/*
+ * Sync the HW-blocking state of all rfkill switches,
+ * do notice it causes the rfkill core to schedule uevents
+ */
+static void tpacpi_rfk_update_hwblock_state(bool blocked)
+{
+ unsigned int i;
+ struct tpacpi_rfk *tp_rfk;
+
+ for (i = 0; i < TPACPI_RFK_SW_MAX; i++) {
+ tp_rfk = tpacpi_rfkill_switches[i];
+ if (tp_rfk) {
+ if (rfkill_set_hw_state(tp_rfk->rfkill,
+ blocked)) {
+ /* ignore -- we track sw block */
+ }
+ }
+ }
+}
+
+/* Call to get the WLSW state from the firmware */
+static int hotkey_get_wlsw(void);
+
+/* Call to query WLSW state and update all rfkill switches */
+static bool tpacpi_rfk_check_hwblock_state(void)
+{
+ int res = hotkey_get_wlsw();
+ int hw_blocked;
+
+ /* When unknown or unsupported, we have to assume it is unblocked */
+ if (res < 0)
+ return false;
+
+ hw_blocked = (res == TPACPI_RFK_RADIO_OFF);
+ tpacpi_rfk_update_hwblock_state(hw_blocked);
+
+ return hw_blocked;
+}
+
+static int tpacpi_rfk_hook_set_block(void *data, bool blocked)
+{
+ struct tpacpi_rfk *tp_rfk = data;
+ int res;
+
+ dbg_printk(TPACPI_DBG_RFKILL,
+ "request to change radio state to %s\n",
+ blocked ? "blocked" : "unblocked");
+
+ /* try to set radio state */
+ res = (tp_rfk->ops->set_status)(blocked ?
+ TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON);
+
+ /* and update the rfkill core with whatever the FW really did */
+ tpacpi_rfk_update_swstate(tp_rfk);
+
+ return (res < 0) ? res : 0;
+}
+
+static const struct rfkill_ops tpacpi_rfk_rfkill_ops = {
+ .set_block = tpacpi_rfk_hook_set_block,
+};
+
+static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
+ const struct tpacpi_rfk_ops *tp_rfkops,
const enum rfkill_type rfktype,
const char *name,
- const bool set_default,
- int (*toggle_radio)(void *, enum rfkill_state),
- int (*get_state)(void *, enum rfkill_state *))
+ const bool set_default)
{
+ struct tpacpi_rfk *atp_rfk;
int res;
- enum rfkill_state initial_state = RFKILL_STATE_SOFT_BLOCKED;
+ bool initial_sw_state = false;
+ int initial_sw_status;
- res = get_state(NULL, &initial_state);
- if (res < 0) {
+ BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
+
+ initial_sw_status = (tp_rfkops->get_status)();
+ if (initial_sw_status < 0) {
printk(TPACPI_ERR
"failed to read initial state for %s, error %d; "
- "will turn radio off\n", name, res);
- } else if (set_default) {
- /* try to set the initial state as the default for the rfkill
- * type, since we ask the firmware to preserve it across S5 in
- * NVRAM */
- if (rfkill_set_default(rfktype,
- (initial_state == RFKILL_STATE_UNBLOCKED) ?
- RFKILL_STATE_UNBLOCKED :
- RFKILL_STATE_SOFT_BLOCKED) == -EPERM)
- vdbg_printk(TPACPI_DBG_RFKILL,
- "Default state for %s cannot be changed\n",
- name);
- }
-
- *rfk = rfkill_allocate(&tpacpi_pdev->dev, rfktype);
- if (!*rfk) {
+ "will turn radio off\n", name, initial_sw_status);
+ } else {
+ initial_sw_state = (initial_sw_status == TPACPI_RFK_RADIO_OFF);
+ if (set_default) {
+ /* try to set the initial state as the default for the
+ * rfkill type, since we ask the firmware to preserve
+ * it across S5 in NVRAM */
+ rfkill_set_global_sw_state(rfktype, initial_sw_state);
+ }
+ }
+
+ atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
+ if (atp_rfk)
+ atp_rfk->rfkill = rfkill_alloc(name,
+ &tpacpi_pdev->dev,
+ rfktype,
+ &tpacpi_rfk_rfkill_ops,
+ atp_rfk);
+ if (!atp_rfk || !atp_rfk->rfkill) {
printk(TPACPI_ERR
"failed to allocate memory for rfkill class\n");
+ kfree(atp_rfk);
return -ENOMEM;
}
- (*rfk)->name = name;
- (*rfk)->get_state = get_state;
- (*rfk)->toggle_radio = toggle_radio;
- (*rfk)->state = initial_state;
+ atp_rfk->id = id;
+ atp_rfk->ops = tp_rfkops;
+
+ rfkill_set_states(atp_rfk->rfkill, initial_sw_state,
+ tpacpi_rfk_check_hwblock_state());
- res = rfkill_register(*rfk);
+ res = rfkill_register(atp_rfk->rfkill);
if (res < 0) {
printk(TPACPI_ERR
"failed to register %s rfkill switch: %d\n",
name, res);
- rfkill_free(*rfk);
- *rfk = NULL;
+ rfkill_destroy(atp_rfk->rfkill);
+ kfree(atp_rfk);
return res;
}
+ tpacpi_rfkill_switches[id] = atp_rfk;
return 0;
}
-static void printk_deprecated_attribute(const char * const what,
- const char * const details)
+static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id)
{
- tpacpi_log_usertask("deprecated sysfs attribute");
- printk(TPACPI_WARN "WARNING: sysfs attribute %s is deprecated and "
- "will be removed. %s\n",
- what, details);
+ struct tpacpi_rfk *tp_rfk;
+
+ BUG_ON(id >= TPACPI_RFK_SW_MAX);
+
+ tp_rfk = tpacpi_rfkill_switches[id];
+ if (tp_rfk) {
+ rfkill_unregister(tp_rfk->rfkill);
+ tpacpi_rfkill_switches[id] = NULL;
+ kfree(tp_rfk);
+ }
}
static void printk_deprecated_rfkill_attribute(const char * const what)
"Please switch to generic rfkill before year 2010");
}
+/* sysfs <radio> enable ------------------------------------------------ */
+static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id,
+ struct device_attribute *attr,
+ char *buf)
+{
+ int status;
+
+ printk_deprecated_rfkill_attribute(attr->attr.name);
+
+ /* This is in the ABI... */
+ if (tpacpi_rfk_check_hwblock_state()) {
+ status = TPACPI_RFK_RADIO_OFF;
+ } else {
+ status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
+ if (status < 0)
+ return status;
+ }
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ (status == TPACPI_RFK_RADIO_ON) ? 1 : 0);
+}
+
+static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ unsigned long t;
+ int res;
+
+ printk_deprecated_rfkill_attribute(attr->attr.name);
+
+ if (parse_strtoul(buf, 1, &t))
+ return -EINVAL;
+
+ tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t);
+
+ /* This is in the ABI... */
+ if (tpacpi_rfk_check_hwblock_state() && !!t)
+ return -EPERM;
+
+ res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF);
+ tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
+
+ return (res < 0) ? res : count;
+}
+
+/* procfs -------------------------------------------------------------- */
+static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, char *p)
+{
+ int len = 0;
+
+ if (id >= TPACPI_RFK_SW_MAX)
+ len += sprintf(p + len, "status:\t\tnot supported\n");
+ else {
+ int status;
+
+ /* This is in the ABI... */
+ if (tpacpi_rfk_check_hwblock_state()) {
+ status = TPACPI_RFK_RADIO_OFF;
+ } else {
+ status = tpacpi_rfk_update_swstate(
+ tpacpi_rfkill_switches[id]);
+ if (status < 0)
+ return status;
+ }
+
+ len += sprintf(p + len, "status:\t\t%s\n",
+ (status == TPACPI_RFK_RADIO_ON) ?
+ "enabled" : "disabled");
+ len += sprintf(p + len, "commands:\tenable, disable\n");
+ }
+
+ return len;
+}
+
+static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf)
+{
+ char *cmd;
+ int status = -1;
+ int res = 0;
+
+ if (id >= TPACPI_RFK_SW_MAX)
+ return -ENODEV;
+
+ while ((cmd = next_cmd(&buf))) {
+ if (strlencmp(cmd, "enable") == 0)
+ status = TPACPI_RFK_RADIO_ON;
+ else if (strlencmp(cmd, "disable") == 0)
+ status = TPACPI_RFK_RADIO_OFF;
+ else
+ return -EINVAL;
+ }
+
+ if (status != -1) {
+ tpacpi_disclose_usertask("procfs", "attempt to %s %s\n",
+ (status == TPACPI_RFK_RADIO_ON) ?
+ "enable" : "disable",
+ tpacpi_rfkill_names[id]);
+ res = (tpacpi_rfkill_switches[id]->ops->set_status)(status);
+ tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]);
+ }
+
+ return res;
+}
+
/*************************************************************************
* thinkpad-acpi driver attributes
*/
#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
-static void tpacpi_send_radiosw_update(void);
-
/* wlsw_emulstate ------------------------------------------------------ */
static ssize_t tpacpi_driver_wlsw_emulstate_show(struct device_driver *drv,
char *buf)
if (parse_strtoul(buf, 1, &t))
return -EINVAL;
- if (tpacpi_wlsw_emulstate != t) {
- tpacpi_wlsw_emulstate = !!t;
- tpacpi_send_radiosw_update();
- } else
+ if (tpacpi_wlsw_emulstate != !!t) {
tpacpi_wlsw_emulstate = !!t;
+ tpacpi_rfk_update_hwblock_state(!t); /* negative logic */
+ }
return count;
}
/* HKEY.MHKG() return bits */
#define TP_HOTKEY_TABLET_MASK (1 << 3)
-static int hotkey_get_wlsw(int *status)
+static int hotkey_get_wlsw(void)
{
+ int status;
+
+ if (!tp_features.hotkey_wlsw)
+ return -ENODEV;
+
#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
- if (dbg_wlswemul) {
- *status = !!tpacpi_wlsw_emulstate;
- return 0;
- }
+ if (dbg_wlswemul)
+ return (tpacpi_wlsw_emulstate) ?
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
#endif
- if (!acpi_evalf(hkey_handle, status, "WLSW", "d"))
+
+ if (!acpi_evalf(hkey_handle, &status, "WLSW", "d"))
return -EIO;
- return 0;
+
+ return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
}
static int hotkey_get_tablet_mode(int *status)
struct device_attribute *attr,
char *buf)
{
- int res, s;
- res = hotkey_get_wlsw(&s);
+ int res;
+ res = hotkey_get_wlsw();
if (res < 0)
return res;
- return snprintf(buf, PAGE_SIZE, "%d\n", !!s);
+ /* Opportunistic update */
+ tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF));
+
+ return snprintf(buf, PAGE_SIZE, "%d\n",
+ (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1);
}
static struct device_attribute dev_attr_hotkey_radio_sw =
&dev_attr_hotkey_wakeup_hotunplug_complete.attr,
};
-static void bluetooth_update_rfk(void);
-static void wan_update_rfk(void);
-static void uwb_update_rfk(void);
+/*
+ * Sync both the hw and sw blocking state of all switches
+ */
static void tpacpi_send_radiosw_update(void)
{
int wlsw;
- /* Sync these BEFORE sending any rfkill events */
- if (tp_features.bluetooth)
- bluetooth_update_rfk();
- if (tp_features.wan)
- wan_update_rfk();
- if (tp_features.uwb)
- uwb_update_rfk();
+ /*
+ * We must sync all rfkill controllers *before* issuing any
+ * rfkill input events, or we will race the rfkill core input
+ * handler.
+ *
+ * tpacpi_inputdev_send_mutex works as a syncronization point
+ * for the above.
+ *
+ * We optimize to avoid numerous calls to hotkey_get_wlsw.
+ */
- if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&wlsw)) {
+ wlsw = hotkey_get_wlsw();
+
+ /* Sync hw blocking state first if it is hw-blocked */
+ if (wlsw == TPACPI_RFK_RADIO_OFF)
+ tpacpi_rfk_update_hwblock_state(true);
+
+ /* Sync sw blocking state */
+ tpacpi_rfk_update_swstate_all();
+
+ /* Sync hw blocking state last if it is hw-unblocked */
+ if (wlsw == TPACPI_RFK_RADIO_ON)
+ tpacpi_rfk_update_hwblock_state(false);
+
+ /* Issue rfkill input event for WLSW switch */
+ if (!(wlsw < 0)) {
mutex_lock(&tpacpi_inputdev_send_mutex);
input_report_switch(tpacpi_inputdev,
- SW_RFKILL_ALL, !!wlsw);
+ SW_RFKILL_ALL, (wlsw > 0));
input_sync(tpacpi_inputdev);
mutex_unlock(&tpacpi_inputdev_send_mutex);
}
+
+ /*
+ * this can be unconditional, as we will poll state again
+ * if userspace uses the notify to read data
+ */
hotkey_radio_sw_notify_change();
}
#define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw"
-static struct rfkill *tpacpi_bluetooth_rfkill;
-
static void bluetooth_suspend(pm_message_t state)
{
/* Try to make sure radio will resume powered off */
"bluetooth power down on resume request failed\n");
}
-static int bluetooth_get_radiosw(void)
+static int bluetooth_get_status(void)
{
int status;
- if (!tp_features.bluetooth)
- return -ENODEV;
-
- /* WLSW overrides bluetooth in firmware/hardware, reflect that */
- if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
- return RFKILL_STATE_HARD_BLOCKED;
-
#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
if (dbg_bluetoothemul)
return (tpacpi_bluetooth_emulstate) ?
- RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
#endif
if (!acpi_evalf(hkey_handle, &status, "GBDC", "d"))
return -EIO;
return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ?
- RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
}
-static void bluetooth_update_rfk(void)
+static int bluetooth_set_status(enum tpacpi_rfkill_state state)
{
int status;
- if (!tpacpi_bluetooth_rfkill)
- return;
-
- status = bluetooth_get_radiosw();
- if (status < 0)
- return;
- rfkill_force_state(tpacpi_bluetooth_rfkill, status);
-
vdbg_printk(TPACPI_DBG_RFKILL,
- "forced rfkill state to %d\n",
- status);
-}
-
-static int bluetooth_set_radiosw(int radio_on, int update_rfk)
-{
- int status;
-
- if (!tp_features.bluetooth)
- return -ENODEV;
-
- /* WLSW overrides bluetooth in firmware/hardware, but there is no
- * reason to risk weird behaviour. */
- if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
- && radio_on)
- return -EPERM;
-
- vdbg_printk(TPACPI_DBG_RFKILL,
- "will %s bluetooth\n", radio_on ? "enable" : "disable");
+ "will attempt to %s bluetooth\n",
+ (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
if (dbg_bluetoothemul) {
- tpacpi_bluetooth_emulstate = !!radio_on;
- if (update_rfk)
- bluetooth_update_rfk();
+ tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON);
return 0;
}
#endif
/* We make sure to keep TP_ACPI_BLUETOOTH_RESUMECTRL off */
- if (radio_on)
+ if (state == TPACPI_RFK_RADIO_ON)
status = TP_ACPI_BLUETOOTH_RADIOSSW;
else
status = 0;
+
if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status))
return -EIO;
- if (update_rfk)
- bluetooth_update_rfk();
-
return 0;
}
struct device_attribute *attr,
char *buf)
{
- int status;
-
- printk_deprecated_rfkill_attribute("bluetooth_enable");
-
- status = bluetooth_get_radiosw();
- if (status < 0)
- return status;
-
- return snprintf(buf, PAGE_SIZE, "%d\n",
- (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
+ return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID,
+ attr, buf);
}
static ssize_t bluetooth_enable_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- unsigned long t;
- int res;
-
- printk_deprecated_rfkill_attribute("bluetooth_enable");
-
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
-
- tpacpi_disclose_usertask("bluetooth_enable", "set to %ld\n", t);
-
- res = bluetooth_set_radiosw(t, 1);
-
- return (res) ? res : count;
+ return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID,
+ attr, buf, count);
}
static struct device_attribute dev_attr_bluetooth_enable =
.attrs = bluetooth_attributes,
};
-static int tpacpi_bluetooth_rfk_get(void *data, enum rfkill_state *state)
-{
- int bts = bluetooth_get_radiosw();
-
- if (bts < 0)
- return bts;
-
- *state = bts;
- return 0;
-}
-
-static int tpacpi_bluetooth_rfk_set(void *data, enum rfkill_state state)
-{
- dbg_printk(TPACPI_DBG_RFKILL,
- "request to change radio state to %d\n", state);
- return bluetooth_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
-}
+static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = {
+ .get_status = bluetooth_get_status,
+ .set_status = bluetooth_set_status,
+};
static void bluetooth_shutdown(void)
{
static void bluetooth_exit(void)
{
- bluetooth_shutdown();
-
- if (tpacpi_bluetooth_rfkill)
- rfkill_unregister(tpacpi_bluetooth_rfkill);
-
sysfs_remove_group(&tpacpi_pdev->dev.kobj,
&bluetooth_attr_group);
+
+ tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
+
+ bluetooth_shutdown();
}
static int __init bluetooth_init(struct ibm_init_struct *iibm)
if (!tp_features.bluetooth)
return 1;
- res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
- &bluetooth_attr_group);
- if (res)
- return res;
-
res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID,
- &tpacpi_bluetooth_rfkill,
+ &bluetooth_tprfk_ops,
RFKILL_TYPE_BLUETOOTH,
TPACPI_RFK_BLUETOOTH_SW_NAME,
- true,
- tpacpi_bluetooth_rfk_set,
- tpacpi_bluetooth_rfk_get);
+ true);
+ if (res)
+ return res;
+
+ res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
+ &bluetooth_attr_group);
if (res) {
- bluetooth_exit();
+ tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID);
return res;
}
/* procfs -------------------------------------------------------------- */
static int bluetooth_read(char *p)
{
- int len = 0;
- int status = bluetooth_get_radiosw();
-
- if (!tp_features.bluetooth)
- len += sprintf(p + len, "status:\t\tnot supported\n");
- else {
- len += sprintf(p + len, "status:\t\t%s\n",
- (status == RFKILL_STATE_UNBLOCKED) ?
- "enabled" : "disabled");
- len += sprintf(p + len, "commands:\tenable, disable\n");
- }
-
- return len;
+ return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, p);
}
static int bluetooth_write(char *buf)
{
- char *cmd;
- int state = -1;
-
- if (!tp_features.bluetooth)
- return -ENODEV;
-
- while ((cmd = next_cmd(&buf))) {
- if (strlencmp(cmd, "enable") == 0) {
- state = 1;
- } else if (strlencmp(cmd, "disable") == 0) {
- state = 0;
- } else
- return -EINVAL;
- }
-
- if (state != -1) {
- tpacpi_disclose_usertask("procfs bluetooth",
- "attempt to %s\n",
- state ? "enable" : "disable");
- bluetooth_set_radiosw(state, 1);
- }
-
- return 0;
+ return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf);
}
static struct ibm_struct bluetooth_driver_data = {
#define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw"
-static struct rfkill *tpacpi_wan_rfkill;
-
static void wan_suspend(pm_message_t state)
{
/* Try to make sure radio will resume powered off */
"WWAN power down on resume request failed\n");
}
-static int wan_get_radiosw(void)
+static int wan_get_status(void)
{
int status;
- if (!tp_features.wan)
- return -ENODEV;
-
- /* WLSW overrides WWAN in firmware/hardware, reflect that */
- if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
- return RFKILL_STATE_HARD_BLOCKED;
-
#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
if (dbg_wwanemul)
return (tpacpi_wwan_emulstate) ?
- RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
#endif
if (!acpi_evalf(hkey_handle, &status, "GWAN", "d"))
return -EIO;
return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ?
- RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
-}
-
-static void wan_update_rfk(void)
-{
- int status;
-
- if (!tpacpi_wan_rfkill)
- return;
-
- status = wan_get_radiosw();
- if (status < 0)
- return;
- rfkill_force_state(tpacpi_wan_rfkill, status);
-
- vdbg_printk(TPACPI_DBG_RFKILL,
- "forced rfkill state to %d\n",
- status);
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
}
-static int wan_set_radiosw(int radio_on, int update_rfk)
+static int wan_set_status(enum tpacpi_rfkill_state state)
{
int status;
- if (!tp_features.wan)
- return -ENODEV;
-
- /* WLSW overrides bluetooth in firmware/hardware, but there is no
- * reason to risk weird behaviour. */
- if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
- && radio_on)
- return -EPERM;
-
vdbg_printk(TPACPI_DBG_RFKILL,
- "will %s WWAN\n", radio_on ? "enable" : "disable");
+ "will attempt to %s wwan\n",
+ (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
if (dbg_wwanemul) {
- tpacpi_wwan_emulstate = !!radio_on;
- if (update_rfk)
- wan_update_rfk();
+ tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON);
return 0;
}
#endif
/* We make sure to keep TP_ACPI_WANCARD_RESUMECTRL off */
- if (radio_on)
+ if (state == TPACPI_RFK_RADIO_ON)
status = TP_ACPI_WANCARD_RADIOSSW;
else
status = 0;
+
if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status))
return -EIO;
- if (update_rfk)
- wan_update_rfk();
-
return 0;
}
struct device_attribute *attr,
char *buf)
{
- int status;
-
- printk_deprecated_rfkill_attribute("wwan_enable");
-
- status = wan_get_radiosw();
- if (status < 0)
- return status;
-
- return snprintf(buf, PAGE_SIZE, "%d\n",
- (status == RFKILL_STATE_UNBLOCKED) ? 1 : 0);
+ return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID,
+ attr, buf);
}
static ssize_t wan_enable_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
- unsigned long t;
- int res;
-
- printk_deprecated_rfkill_attribute("wwan_enable");
-
- if (parse_strtoul(buf, 1, &t))
- return -EINVAL;
-
- tpacpi_disclose_usertask("wwan_enable", "set to %ld\n", t);
-
- res = wan_set_radiosw(t, 1);
-
- return (res) ? res : count;
+ return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID,
+ attr, buf, count);
}
static struct device_attribute dev_attr_wan_enable =
.attrs = wan_attributes,
};
-static int tpacpi_wan_rfk_get(void *data, enum rfkill_state *state)
-{
- int wans = wan_get_radiosw();
-
- if (wans < 0)
- return wans;
-
- *state = wans;
- return 0;
-}
-
-static int tpacpi_wan_rfk_set(void *data, enum rfkill_state state)
-{
- dbg_printk(TPACPI_DBG_RFKILL,
- "request to change radio state to %d\n", state);
- return wan_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
-}
+static const struct tpacpi_rfk_ops wan_tprfk_ops = {
+ .get_status = wan_get_status,
+ .set_status = wan_set_status,
+};
static void wan_shutdown(void)
{
static void wan_exit(void)
{
- wan_shutdown();
-
- if (tpacpi_wan_rfkill)
- rfkill_unregister(tpacpi_wan_rfkill);
-
sysfs_remove_group(&tpacpi_pdev->dev.kobj,
&wan_attr_group);
+
+ tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
+
+ wan_shutdown();
}
static int __init wan_init(struct ibm_init_struct *iibm)
if (!tp_features.wan)
return 1;
- res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
- &wan_attr_group);
- if (res)
- return res;
-
res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID,
- &tpacpi_wan_rfkill,
+ &wan_tprfk_ops,
RFKILL_TYPE_WWAN,
TPACPI_RFK_WWAN_SW_NAME,
- true,
- tpacpi_wan_rfk_set,
- tpacpi_wan_rfk_get);
+ true);
+ if (res)
+ return res;
+
+ res = sysfs_create_group(&tpacpi_pdev->dev.kobj,
+ &wan_attr_group);
+
if (res) {
- wan_exit();
+ tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID);
return res;
}
/* procfs -------------------------------------------------------------- */
static int wan_read(char *p)
{
- int len = 0;
- int status = wan_get_radiosw();
-
- tpacpi_disclose_usertask("procfs wan", "read");
-
- if (!tp_features.wan)
- len += sprintf(p + len, "status:\t\tnot supported\n");
- else {
- len += sprintf(p + len, "status:\t\t%s\n",
- (status == RFKILL_STATE_UNBLOCKED) ?
- "enabled" : "disabled");
- len += sprintf(p + len, "commands:\tenable, disable\n");
- }
-
- return len;
+ return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, p);
}
static int wan_write(char *buf)
{
- char *cmd;
- int state = -1;
-
- if (!tp_features.wan)
- return -ENODEV;
-
- while ((cmd = next_cmd(&buf))) {
- if (strlencmp(cmd, "enable") == 0) {
- state = 1;
- } else if (strlencmp(cmd, "disable") == 0) {
- state = 0;
- } else
- return -EINVAL;
- }
-
- if (state != -1) {
- tpacpi_disclose_usertask("procfs wan",
- "attempt to %s\n",
- state ? "enable" : "disable");
- wan_set_radiosw(state, 1);
- }
-
- return 0;
+ return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf);
}
static struct ibm_struct wan_driver_data = {
#define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw"
-static struct rfkill *tpacpi_uwb_rfkill;
-
-static int uwb_get_radiosw(void)
+static int uwb_get_status(void)
{
int status;
- if (!tp_features.uwb)
- return -ENODEV;
-
- /* WLSW overrides UWB in firmware/hardware, reflect that */
- if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status)
- return RFKILL_STATE_HARD_BLOCKED;
-
#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
if (dbg_uwbemul)
return (tpacpi_uwb_emulstate) ?
- RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
#endif
if (!acpi_evalf(hkey_handle, &status, "GUWB", "d"))
return -EIO;
return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ?
- RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
+ TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF;
}
-static void uwb_update_rfk(void)
+static int uwb_set_status(enum tpacpi_rfkill_state state)
{
int status;
- if (!tpacpi_uwb_rfkill)
- return;
-
- status = uwb_get_radiosw();
- if (status < 0)
- return;
- rfkill_force_state(tpacpi_uwb_rfkill, status);
-
vdbg_printk(TPACPI_DBG_RFKILL,
- "forced rfkill state to %d\n",
- status);
-}
-
-static int uwb_set_radiosw(int radio_on, int update_rfk)
-{
- int status;
-
- if (!tp_features.uwb)
- return -ENODEV;
-
- /* WLSW overrides UWB in firmware/hardware, but there is no
- * reason to risk weird behaviour. */
- if (tp_features.hotkey_wlsw && !hotkey_get_wlsw(&status) && !status
- && radio_on)
- return -EPERM;
-
- vdbg_printk(TPACPI_DBG_RFKILL,
- "will %s UWB\n", radio_on ? "enable" : "disable");
+ "will attempt to %s UWB\n",
+ (state == TPACPI_RFK_RADIO_ON) ? "enable" : "disable");
#ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES
if (dbg_uwbemul) {
- tpacpi_uwb_emulstate = !!radio_on;
- if (update_rfk)
- uwb_update_rfk();
+ tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON);
return 0;
}
#endif
- status = (radio_on) ? TP_ACPI_UWB_RADIOSSW : 0;
+ if (state == TPACPI_RFK_RADIO_ON)
+ status = TP_ACPI_UWB_RADIOSSW;
+ else
+ status = 0;
+
if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status))
return -EIO;
- if (update_rfk)
- uwb_update_rfk();
-
return 0;
}
/* --------------------------------------------------------------------- */
-static int tpacpi_uwb_rfk_get(void *data, enum rfkill_state *state)
-{
- int uwbs = uwb_get_radiosw();
-
- if (uwbs < 0)
- return uwbs;
-
- *state = uwbs;
- return 0;
-}
-
-static int tpacpi_uwb_rfk_set(void *data, enum rfkill_state state)
-{
- dbg_printk(TPACPI_DBG_RFKILL,
- "request to change radio state to %d\n", state);
- return uwb_set_radiosw((state == RFKILL_STATE_UNBLOCKED), 0);
-}
+static const struct tpacpi_rfk_ops uwb_tprfk_ops = {
+ .get_status = uwb_get_status,
+ .set_status = uwb_set_status,
+};
static void uwb_exit(void)
{
- if (tpacpi_uwb_rfkill)
- rfkill_unregister(tpacpi_uwb_rfkill);
+ tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID);
}
static int __init uwb_init(struct ibm_init_struct *iibm)
return 1;
res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID,
- &tpacpi_uwb_rfkill,
+ &uwb_tprfk_ops,
RFKILL_TYPE_UWB,
TPACPI_RFK_UWB_SW_NAME,
- false,
- tpacpi_uwb_rfk_set,
- tpacpi_uwb_rfk_get);
-
+ false);
return res;
}
#include <linux/backlight.h>
#include <linux/platform_device.h>
#include <linux/rfkill.h>
-#include <linux/input-polldev.h>
#include <asm/uaccess.h>
struct toshiba_acpi_dev {
struct platform_device *p_dev;
- struct rfkill *rfk_dev;
- struct input_polled_dev *poll_dev;
+ struct rfkill *bt_rfk;
const char *bt_name;
- const char *rfk_name;
-
- bool last_rfk_state;
struct mutex mutex;
};
static struct toshiba_acpi_dev toshiba_acpi = {
.bt_name = "Toshiba Bluetooth",
- .rfk_name = "Toshiba RFKill Switch",
- .last_rfk_state = false,
};
/* Bluetooth rfkill handlers */
return hci_result;
}
-static u32 hci_get_bt_on(bool *on)
-{
- u32 hci_result;
- u32 value, value2;
-
- value = 0;
- value2 = 0x0001;
- hci_read2(HCI_WIRELESS, &value, &value2, &hci_result);
- if (hci_result == HCI_SUCCESS)
- *on = (value & HCI_WIRELESS_BT_POWER) &&
- (value & HCI_WIRELESS_BT_ATTACH);
-
- return hci_result;
-}
-
static u32 hci_get_radio_state(bool *radio_state)
{
u32 hci_result;
return hci_result;
}
-static int bt_rfkill_toggle_radio(void *data, enum rfkill_state state)
+static int bt_rfkill_set_block(void *data, bool blocked)
{
+ struct toshiba_acpi_dev *dev = data;
u32 result1, result2;
u32 value;
+ int err;
bool radio_state;
- struct toshiba_acpi_dev *dev = data;
- value = (state == RFKILL_STATE_UNBLOCKED);
+ value = (blocked == false);
- if (hci_get_radio_state(&radio_state) != HCI_SUCCESS)
- return -EFAULT;
+ mutex_lock(&dev->mutex);
+ if (hci_get_radio_state(&radio_state) != HCI_SUCCESS) {
+ err = -EBUSY;
+ goto out;
+ }
- switch (state) {
- case RFKILL_STATE_UNBLOCKED:
- if (!radio_state)
- return -EPERM;
- break;
- case RFKILL_STATE_SOFT_BLOCKED:
- break;
- default:
- return -EINVAL;
+ if (!radio_state) {
+ err = 0;
+ goto out;
}
- mutex_lock(&dev->mutex);
hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_POWER, &result1);
hci_write2(HCI_WIRELESS, value, HCI_WIRELESS_BT_ATTACH, &result2);
- mutex_unlock(&dev->mutex);
if (result1 != HCI_SUCCESS || result2 != HCI_SUCCESS)
- return -EFAULT;
-
- return 0;
+ err = -EBUSY;
+ else
+ err = 0;
+ out:
+ mutex_unlock(&dev->mutex);
+ return err;
}
-static void bt_poll_rfkill(struct input_polled_dev *poll_dev)
+static void bt_rfkill_poll(struct rfkill *rfkill, void *data)
{
- bool state_changed;
bool new_rfk_state;
bool value;
u32 hci_result;
- struct toshiba_acpi_dev *dev = poll_dev->private;
+ struct toshiba_acpi_dev *dev = data;
+
+ mutex_lock(&dev->mutex);
hci_result = hci_get_radio_state(&value);
- if (hci_result != HCI_SUCCESS)
- return; /* Can't do anything useful */
+ if (hci_result != HCI_SUCCESS) {
+ /* Can't do anything useful */
+ mutex_unlock(&dev->mutex);
+ }
new_rfk_state = value;
- mutex_lock(&dev->mutex);
- state_changed = new_rfk_state != dev->last_rfk_state;
- dev->last_rfk_state = new_rfk_state;
mutex_unlock(&dev->mutex);
- if (unlikely(state_changed)) {
- rfkill_force_state(dev->rfk_dev,
- new_rfk_state ?
- RFKILL_STATE_SOFT_BLOCKED :
- RFKILL_STATE_HARD_BLOCKED);
- input_report_switch(poll_dev->input, SW_RFKILL_ALL,
- new_rfk_state);
- input_sync(poll_dev->input);
- }
+ if (rfkill_set_hw_state(rfkill, !new_rfk_state))
+ bt_rfkill_set_block(data, true);
}
+static const struct rfkill_ops toshiba_rfk_ops = {
+ .set_block = bt_rfkill_set_block,
+ .poll = bt_rfkill_poll,
+};
+
static struct proc_dir_entry *toshiba_proc_dir /*= 0*/ ;
static struct backlight_device *toshiba_backlight_device;
static int force_fan;
static void toshiba_acpi_exit(void)
{
- if (toshiba_acpi.poll_dev) {
- input_unregister_polled_device(toshiba_acpi.poll_dev);
- input_free_polled_device(toshiba_acpi.poll_dev);
+ if (toshiba_acpi.bt_rfk) {
+ rfkill_unregister(toshiba_acpi.bt_rfk);
+ rfkill_destroy(toshiba_acpi.bt_rfk);
}
- if (toshiba_acpi.rfk_dev)
- rfkill_unregister(toshiba_acpi.rfk_dev);
-
if (toshiba_backlight_device)
backlight_device_unregister(toshiba_backlight_device);
acpi_status status = AE_OK;
u32 hci_result;
bool bt_present;
- bool bt_on;
- bool radio_on;
int ret = 0;
if (acpi_disabled)
/* Register rfkill switch for Bluetooth */
if (hci_get_bt_present(&bt_present) == HCI_SUCCESS && bt_present) {
- toshiba_acpi.rfk_dev = rfkill_allocate(&toshiba_acpi.p_dev->dev,
- RFKILL_TYPE_BLUETOOTH);
- if (!toshiba_acpi.rfk_dev) {
+ toshiba_acpi.bt_rfk = rfkill_alloc(toshiba_acpi.bt_name,
+ &toshiba_acpi.p_dev->dev,
+ RFKILL_TYPE_BLUETOOTH,
+ &toshiba_rfk_ops,
+ &toshiba_acpi);
+ if (!toshiba_acpi.bt_rfk) {
printk(MY_ERR "unable to allocate rfkill device\n");
toshiba_acpi_exit();
return -ENOMEM;
}
- toshiba_acpi.rfk_dev->name = toshiba_acpi.bt_name;
- toshiba_acpi.rfk_dev->toggle_radio = bt_rfkill_toggle_radio;
- toshiba_acpi.rfk_dev->data = &toshiba_acpi;
-
- if (hci_get_bt_on(&bt_on) == HCI_SUCCESS && bt_on) {
- toshiba_acpi.rfk_dev->state = RFKILL_STATE_UNBLOCKED;
- } else if (hci_get_radio_state(&radio_on) == HCI_SUCCESS &&
- radio_on) {
- toshiba_acpi.rfk_dev->state = RFKILL_STATE_SOFT_BLOCKED;
- } else {
- toshiba_acpi.rfk_dev->state = RFKILL_STATE_HARD_BLOCKED;
- }
-
- ret = rfkill_register(toshiba_acpi.rfk_dev);
+ ret = rfkill_register(toshiba_acpi.bt_rfk);
if (ret) {
printk(MY_ERR "unable to register rfkill device\n");
- toshiba_acpi_exit();
- return -ENOMEM;
- }
-
- /* Register input device for kill switch */
- toshiba_acpi.poll_dev = input_allocate_polled_device();
- if (!toshiba_acpi.poll_dev) {
- printk(MY_ERR
- "unable to allocate kill-switch input device\n");
- toshiba_acpi_exit();
- return -ENOMEM;
- }
- toshiba_acpi.poll_dev->private = &toshiba_acpi;
- toshiba_acpi.poll_dev->poll = bt_poll_rfkill;
- toshiba_acpi.poll_dev->poll_interval = 1000; /* msecs */
-
- toshiba_acpi.poll_dev->input->name = toshiba_acpi.rfk_name;
- toshiba_acpi.poll_dev->input->id.bustype = BUS_HOST;
- /* Toshiba USB ID */
- toshiba_acpi.poll_dev->input->id.vendor = 0x0930;
- set_bit(EV_SW, toshiba_acpi.poll_dev->input->evbit);
- set_bit(SW_RFKILL_ALL, toshiba_acpi.poll_dev->input->swbit);
- input_report_switch(toshiba_acpi.poll_dev->input,
- SW_RFKILL_ALL, TRUE);
- input_sync(toshiba_acpi.poll_dev->input);
-
- ret = input_register_polled_device(toshiba_acpi.poll_dev);
- if (ret) {
- printk(MY_ERR
- "unable to register kill-switch input device\n");
+ rfkill_destroy(toshiba_acpi.bt_rfk);
toshiba_acpi_exit();
return ret;
}
unifdef-y += qnx4_fs.h
unifdef-y += quota.h
unifdef-y += random.h
+unifdef-y += rfkill.h
unifdef-y += irqnr.h
unifdef-y += reboot.h
unifdef-y += reiserfs_fs.h
/*
* Copyright (C) 2006 - 2007 Ivo van Doorn
* Copyright (C) 2007 Dmitry Torokhov
+ * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
+
+/* define userspace visible states */
+#define RFKILL_STATE_SOFT_BLOCKED 0
+#define RFKILL_STATE_UNBLOCKED 1
+#define RFKILL_STATE_HARD_BLOCKED 2
+
+/* and that's all userspace gets */
+#ifdef __KERNEL__
+/* don't allow anyone to use these in the kernel */
+enum rfkill_user_states {
+ RFKILL_USER_STATE_SOFT_BLOCKED = RFKILL_STATE_SOFT_BLOCKED,
+ RFKILL_USER_STATE_UNBLOCKED = RFKILL_STATE_UNBLOCKED,
+ RFKILL_USER_STATE_HARD_BLOCKED = RFKILL_STATE_HARD_BLOCKED,
+};
+#undef RFKILL_STATE_SOFT_BLOCKED
+#undef RFKILL_STATE_UNBLOCKED
+#undef RFKILL_STATE_HARD_BLOCKED
+
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/list.h>
/**
* enum rfkill_type - type of rfkill switch.
- * RFKILL_TYPE_WLAN: switch is on a 802.11 wireless network device.
- * RFKILL_TYPE_BLUETOOTH: switch is on a bluetooth device.
- * RFKILL_TYPE_UWB: switch is on a ultra wideband device.
- * RFKILL_TYPE_WIMAX: switch is on a WiMAX device.
- * RFKILL_TYPE_WWAN: switch is on a wireless WAN device.
+ *
+ * @RFKILL_TYPE_WLAN: switch is on a 802.11 wireless network device.
+ * @RFKILL_TYPE_BLUETOOTH: switch is on a bluetooth device.
+ * @RFKILL_TYPE_UWB: switch is on a ultra wideband device.
+ * @RFKILL_TYPE_WIMAX: switch is on a WiMAX device.
+ * @RFKILL_TYPE_WWAN: switch is on a wireless WAN device.
+ * @NUM_RFKILL_TYPES: number of defined rfkill types
*/
enum rfkill_type {
- RFKILL_TYPE_WLAN ,
+ RFKILL_TYPE_WLAN,
RFKILL_TYPE_BLUETOOTH,
RFKILL_TYPE_UWB,
RFKILL_TYPE_WIMAX,
RFKILL_TYPE_WWAN,
- RFKILL_TYPE_MAX,
+ NUM_RFKILL_TYPES,
};
-enum rfkill_state {
- RFKILL_STATE_SOFT_BLOCKED = 0, /* Radio output blocked */
- RFKILL_STATE_UNBLOCKED = 1, /* Radio output allowed */
- RFKILL_STATE_HARD_BLOCKED = 2, /* Output blocked, non-overrideable */
- RFKILL_STATE_MAX, /* marker for last valid state */
+/* this is opaque */
+struct rfkill;
+
+/**
+ * struct rfkill_ops - rfkill driver methods
+ *
+ * @poll: poll the rfkill block state(s) -- only assign this method
+ * when you need polling. When called, simply call one of the
+ * rfkill_set{,_hw,_sw}_state family of functions. If the hw
+ * is getting unblocked you need to take into account the return
+ * value of those functions to make sure the software block is
+ * properly used.
+ * @query: query the rfkill block state(s) and call exactly one of the
+ * rfkill_set{,_hw,_sw}_state family of functions. Assign this
+ * method if input events can cause hardware state changes to make
+ * the rfkill core query your driver before setting a requested
+ * block.
+ * @set_block: turn the transmitter on (blocked == false) or off
+ * (blocked == true) -- this is called only while the transmitter
+ * is not hard-blocked, but note that the core's view of whether
+ * the transmitter is hard-blocked might differ from your driver's
+ * view due to race conditions, so it is possible that it is still
+ * called at the same time as you are calling rfkill_set_hw_state().
+ * This callback must be assigned.
+ */
+struct rfkill_ops {
+ void (*poll)(struct rfkill *rfkill, void *data);
+ void (*query)(struct rfkill *rfkill, void *data);
+ int (*set_block)(void *data, bool blocked);
};
+#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
/**
- * struct rfkill - rfkill control structure.
- * @name: Name of the switch.
- * @type: Radio type which the button controls, the value stored
- * here should be a value from enum rfkill_type.
- * @state: State of the switch, "UNBLOCKED" means radio can operate.
- * @mutex: Guards switch state transitions. It serializes callbacks
- * and also protects the state.
- * @data: Pointer to the RF button drivers private data which will be
- * passed along when toggling radio state.
- * @toggle_radio(): Mandatory handler to control state of the radio.
- * only RFKILL_STATE_SOFT_BLOCKED and RFKILL_STATE_UNBLOCKED are
- * valid parameters.
- * @get_state(): handler to read current radio state from hardware,
- * may be called from atomic context, should return 0 on success.
- * Either this handler OR judicious use of rfkill_force_state() is
- * MANDATORY for any driver capable of RFKILL_STATE_HARD_BLOCKED.
- * @led_trigger: A LED trigger for this button's LED.
- * @dev: Device structure integrating the switch into device tree.
- * @node: Used to place switch into list of all switches known to the
- * the system.
- *
- * This structure represents a RF switch located on a network device.
+ * rfkill_alloc - allocate rfkill structure
+ * @name: name of the struct -- the string is not copied internally
+ * @parent: device that has rf switch on it
+ * @type: type of the switch (RFKILL_TYPE_*)
+ * @ops: rfkill methods
+ * @ops_data: data passed to each method
+ *
+ * This function should be called by the transmitter driver to allocate an
+ * rfkill structure. Returns %NULL on failure.
*/
-struct rfkill {
- const char *name;
- enum rfkill_type type;
-
- /* the mutex serializes callbacks and also protects
- * the state */
- struct mutex mutex;
- enum rfkill_state state;
- void *data;
- int (*toggle_radio)(void *data, enum rfkill_state state);
- int (*get_state)(void *data, enum rfkill_state *state);
+struct rfkill * __must_check rfkill_alloc(const char *name,
+ struct device *parent,
+ const enum rfkill_type type,
+ const struct rfkill_ops *ops,
+ void *ops_data);
-#ifdef CONFIG_RFKILL_LEDS
- struct led_trigger led_trigger;
-#endif
+/**
+ * rfkill_register - Register a rfkill structure.
+ * @rfkill: rfkill structure to be registered
+ *
+ * This function should be called by the transmitter driver to register
+ * the rfkill structure needs to be registered. Before calling this function
+ * the driver needs to be ready to service method calls from rfkill.
+ */
+int __must_check rfkill_register(struct rfkill *rfkill);
- struct device dev;
- struct list_head node;
- enum rfkill_state state_for_resume;
-};
-#define to_rfkill(d) container_of(d, struct rfkill, dev)
+/**
+ * rfkill_pause_polling(struct rfkill *rfkill)
+ *
+ * Pause polling -- say transmitter is off for other reasons.
+ * NOTE: not necessary for suspend/resume -- in that case the
+ * core stops polling anyway
+ */
+void rfkill_pause_polling(struct rfkill *rfkill);
-struct rfkill * __must_check rfkill_allocate(struct device *parent,
- enum rfkill_type type);
-void rfkill_free(struct rfkill *rfkill);
-int __must_check rfkill_register(struct rfkill *rfkill);
+/**
+ * rfkill_resume_polling(struct rfkill *rfkill)
+ *
+ * Pause polling -- say transmitter is off for other reasons.
+ * NOTE: not necessary for suspend/resume -- in that case the
+ * core stops polling anyway
+ */
+void rfkill_resume_polling(struct rfkill *rfkill);
+
+
+/**
+ * rfkill_unregister - Unregister a rfkill structure.
+ * @rfkill: rfkill structure to be unregistered
+ *
+ * This function should be called by the network driver during device
+ * teardown to destroy rfkill structure. Until it returns, the driver
+ * needs to be able to service method calls.
+ */
void rfkill_unregister(struct rfkill *rfkill);
-int rfkill_force_state(struct rfkill *rfkill, enum rfkill_state state);
-int rfkill_set_default(enum rfkill_type type, enum rfkill_state state);
+/**
+ * rfkill_destroy - free rfkill structure
+ * @rfkill: rfkill structure to be destroyed
+ *
+ * Destroys the rfkill structure.
+ */
+void rfkill_destroy(struct rfkill *rfkill);
+
+/**
+ * rfkill_set_hw_state - Set the internal rfkill hardware block state
+ * @rfkill: pointer to the rfkill class to modify.
+ * @state: the current hardware block state to set
+ *
+ * rfkill drivers that get events when the hard-blocked state changes
+ * use this function to notify the rfkill core (and through that also
+ * userspace) of the current state -- they should also use this after
+ * resume if the state could have changed.
+ *
+ * You need not (but may) call this function if poll_state is assigned.
+ *
+ * This function can be called in any context, even from within rfkill
+ * callbacks.
+ *
+ * The function returns the combined block state (true if transmitter
+ * should be blocked) so that drivers need not keep track of the soft
+ * block state -- which they might not be able to.
+ */
+bool __must_check rfkill_set_hw_state(struct rfkill *rfkill, bool blocked);
+
+/**
+ * rfkill_set_sw_state - Set the internal rfkill software block state
+ * @rfkill: pointer to the rfkill class to modify.
+ * @state: the current software block state to set
+ *
+ * rfkill drivers that get events when the soft-blocked state changes
+ * (yes, some platforms directly act on input but allow changing again)
+ * use this function to notify the rfkill core (and through that also
+ * userspace) of the current state -- they should also use this after
+ * resume if the state could have changed.
+ *
+ * This function can be called in any context, even from within rfkill
+ * callbacks.
+ *
+ * The function returns the combined block state (true if transmitter
+ * should be blocked).
+ */
+bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked);
+
+/**
+ * rfkill_set_states - Set the internal rfkill block states
+ * @rfkill: pointer to the rfkill class to modify.
+ * @sw: the current software block state to set
+ * @hw: the current hardware block state to set
+ *
+ * This function can be called in any context, even from within rfkill
+ * callbacks.
+ */
+void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw);
/**
- * rfkill_state_complement - return complementar state
- * @state: state to return the complement of
+ * rfkill_set_global_sw_state - set global sw block default
+ * @type: rfkill type to set default for
+ * @blocked: default to set
*
- * Returns RFKILL_STATE_SOFT_BLOCKED if @state is RFKILL_STATE_UNBLOCKED,
- * returns RFKILL_STATE_UNBLOCKED otherwise.
+ * This function sets the global default -- use at boot if your platform has
+ * an rfkill switch. If not early enough this call may be ignored.
+ *
+ * XXX: instead of ignoring -- how about just updating all currently
+ * registered drivers?
*/
-static inline enum rfkill_state rfkill_state_complement(enum rfkill_state state)
+void rfkill_set_global_sw_state(const enum rfkill_type type, bool blocked);
+#else /* !RFKILL */
+static inline struct rfkill * __must_check
+rfkill_alloc(const char *name,
+ struct device *parent,
+ const enum rfkill_type type,
+ const struct rfkill_ops *ops,
+ void *ops_data)
+{
+ return ERR_PTR(-ENODEV);
+}
+
+static inline int __must_check rfkill_register(struct rfkill *rfkill)
+{
+ if (rfkill == ERR_PTR(-ENODEV))
+ return 0;
+ return -EINVAL;
+}
+
+static inline void rfkill_pause_polling(struct rfkill *rfkill)
+{
+}
+
+static inline void rfkill_resume_polling(struct rfkill *rfkill)
+{
+}
+
+static inline void rfkill_unregister(struct rfkill *rfkill)
+{
+}
+
+static inline void rfkill_destroy(struct rfkill *rfkill)
+{
+}
+
+static inline bool rfkill_set_hw_state(struct rfkill *rfkill, bool blocked)
+{
+ return blocked;
+}
+
+static inline bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked)
+{
+ return blocked;
+}
+
+static inline void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw)
+{
+}
+
+static inline void rfkill_set_global_sw_state(const enum rfkill_type type,
+ bool blocked)
{
- return (state == RFKILL_STATE_UNBLOCKED) ?
- RFKILL_STATE_SOFT_BLOCKED : RFKILL_STATE_UNBLOCKED;
}
+#endif /* RFKILL || RFKILL_MODULE */
+
+#ifdef CONFIG_RFKILL_LEDS
/**
- * rfkill_get_led_name - Get the LED trigger name for the button's LED.
+ * rfkill_get_led_trigger_name - Get the LED trigger name for the button's LED.
* This function might return a NULL pointer if registering of the
- * LED trigger failed.
- * Use this as "default_trigger" for the LED.
+ * LED trigger failed. Use this as "default_trigger" for the LED.
*/
-static inline char *rfkill_get_led_name(struct rfkill *rfkill)
-{
-#ifdef CONFIG_RFKILL_LEDS
- return (char *)(rfkill->led_trigger.name);
+const char *rfkill_get_led_trigger_name(struct rfkill *rfkill);
+
+/**
+ * rfkill_set_led_trigger_name -- set the LED trigger name
+ * @rfkill: rfkill struct
+ * @name: LED trigger name
+ *
+ * This function sets the LED trigger name of the radio LED
+ * trigger that rfkill creates. It is optional, but if called
+ * must be called before rfkill_register() to be effective.
+ */
+void rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name);
#else
+static inline const char *rfkill_get_led_trigger_name(struct rfkill *rfkill)
+{
return NULL;
-#endif
}
+static inline void
+rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name)
+{
+}
+#endif
+
+#endif /* __KERNEL__ */
+
#endif /* RFKILL_H */
struct net_device;
struct genl_info;
struct wimax_dev;
-struct input_dev;
/**
* struct wimax_dev - Generic WiMAX device
* See wimax_reset()'s documentation.
*
* @name: [fill] A way to identify this device. We need to register a
- * name with many subsystems (input for RFKILL, workqueue
- * creation, etc). We can't use the network device name as that
+ * name with many subsystems (rfkill, workqueue creation, etc).
+ * We can't use the network device name as that
* might change and in some instances we don't know it yet (until
* we don't call register_netdev()). So we generate an unique one
* using the driver name and device bus id, place it here and use
*
* @rfkill: [private] integration into the RF-Kill infrastructure.
*
- * @rfkill_input: [private] virtual input device to process the
- * hardware RF Kill switches.
- *
* @rf_sw: [private] State of the software radio switch (OFF/ON)
*
* @rf_hw: [private] State of the hardware radio switch (OFF/ON)
To compile this driver as a module, choose M here: the
module will be called rfkill.
-config RFKILL_INPUT
- tristate "Input layer to RF switch connector"
- depends on RFKILL && INPUT
- help
- Say Y here if you want kernel automatically toggle state
- of RF switches on and off when user presses appropriate
- button or a key on the keyboard. Without this module you
- need a some kind of userspace application to control
- state of the switches.
-
- To compile this driver as a module, choose M here: the
- module will be called rfkill-input.
-
# LED trigger support
config RFKILL_LEDS
bool
- depends on RFKILL && LEDS_TRIGGERS
+ depends on RFKILL
+ depends on LEDS_TRIGGERS = y || RFKILL = LEDS_TRIGGERS
default y
+config RFKILL_INPUT
+ bool
+ depends on RFKILL
+ depends on INPUT = y || RFKILL = INPUT
+ default y
# Makefile for the RF switch subsystem.
#
-obj-$(CONFIG_RFKILL) += rfkill.o
-obj-$(CONFIG_RFKILL_INPUT) += rfkill-input.o
+rfkill-y += core.o
+rfkill-$(CONFIG_RFKILL_INPUT) += input.o
+obj-$(CONFIG_RFKILL) += rfkill.o
--- /dev/null
+/*
+ * Copyright (C) 2006 - 2007 Ivo van Doorn
+ * Copyright (C) 2007 Dmitry Torokhov
+ * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the
+ * Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/workqueue.h>
+#include <linux/capability.h>
+#include <linux/list.h>
+#include <linux/mutex.h>
+#include <linux/rfkill.h>
+#include <linux/spinlock.h>
+
+#include "rfkill.h"
+
+#define POLL_INTERVAL (5 * HZ)
+
+#define RFKILL_BLOCK_HW BIT(0)
+#define RFKILL_BLOCK_SW BIT(1)
+#define RFKILL_BLOCK_SW_PREV BIT(2)
+#define RFKILL_BLOCK_ANY (RFKILL_BLOCK_HW |\
+ RFKILL_BLOCK_SW |\
+ RFKILL_BLOCK_SW_PREV)
+#define RFKILL_BLOCK_SW_SETCALL BIT(31)
+
+struct rfkill {
+ spinlock_t lock;
+
+ const char *name;
+ enum rfkill_type type;
+
+ unsigned long state;
+
+ bool registered;
+ bool suspended;
+
+ const struct rfkill_ops *ops;
+ void *data;
+
+#ifdef CONFIG_RFKILL_LEDS
+ struct led_trigger led_trigger;
+ const char *ledtrigname;
+#endif
+
+ struct device dev;
+ struct list_head node;
+
+ struct delayed_work poll_work;
+ struct work_struct uevent_work;
+ struct work_struct sync_work;
+};
+#define to_rfkill(d) container_of(d, struct rfkill, dev)
+
+
+
+MODULE_AUTHOR("Ivo van Doorn <IvDoorn@gmail.com>");
+MODULE_AUTHOR("Johannes Berg <johannes@sipsolutions.net>");
+MODULE_DESCRIPTION("RF switch support");
+MODULE_LICENSE("GPL");
+
+
+/*
+ * The locking here should be made much smarter, we currently have
+ * a bit of a stupid situation because drivers might want to register
+ * the rfkill struct under their own lock, and take this lock during
+ * rfkill method calls -- which will cause an AB-BA deadlock situation.
+ *
+ * To fix that, we need to rework this code here to be mostly lock-free
+ * and only use the mutex for list manipulations, not to protect the
+ * various other global variables. Then we can avoid holding the mutex
+ * around driver operations, and all is happy.
+ */
+static LIST_HEAD(rfkill_list); /* list of registered rf switches */
+static DEFINE_MUTEX(rfkill_global_mutex);
+
+static unsigned int rfkill_default_state = 1;
+module_param_named(default_state, rfkill_default_state, uint, 0444);
+MODULE_PARM_DESC(default_state,
+ "Default initial state for all radio types, 0 = radio off");
+
+static struct {
+ bool cur, def;
+} rfkill_global_states[NUM_RFKILL_TYPES];
+
+static unsigned long rfkill_states_default_locked;
+
+static bool rfkill_epo_lock_active;
+
+
+#ifdef CONFIG_RFKILL_LEDS
+static void rfkill_led_trigger_event(struct rfkill *rfkill)
+{
+ struct led_trigger *trigger;
+
+ if (!rfkill->registered)
+ return;
+
+ trigger = &rfkill->led_trigger;
+
+ if (rfkill->state & RFKILL_BLOCK_ANY)
+ led_trigger_event(trigger, LED_OFF);
+ else
+ led_trigger_event(trigger, LED_FULL);
+}
+
+static void rfkill_led_trigger_activate(struct led_classdev *led)
+{
+ struct rfkill *rfkill;
+
+ rfkill = container_of(led->trigger, struct rfkill, led_trigger);
+
+ rfkill_led_trigger_event(rfkill);
+}
+
+const char *rfkill_get_led_trigger_name(struct rfkill *rfkill)
+{
+ return rfkill->led_trigger.name;
+}
+EXPORT_SYMBOL(rfkill_get_led_trigger_name);
+
+void rfkill_set_led_trigger_name(struct rfkill *rfkill, const char *name)
+{
+ BUG_ON(!rfkill);
+
+ rfkill->ledtrigname = name;
+}
+EXPORT_SYMBOL(rfkill_set_led_trigger_name);
+
+static int rfkill_led_trigger_register(struct rfkill *rfkill)
+{
+ rfkill->led_trigger.name = rfkill->ledtrigname
+ ? : dev_name(&rfkill->dev);
+ rfkill->led_trigger.activate = rfkill_led_trigger_activate;
+ return led_trigger_register(&rfkill->led_trigger);
+}
+
+static void rfkill_led_trigger_unregister(struct rfkill *rfkill)
+{
+ led_trigger_unregister(&rfkill->led_trigger);
+}
+#else
+static void rfkill_led_trigger_event(struct rfkill *rfkill)
+{
+}
+
+static inline int rfkill_led_trigger_register(struct rfkill *rfkill)
+{
+ return 0;
+}
+
+static inline void rfkill_led_trigger_unregister(struct rfkill *rfkill)
+{
+}
+#endif /* CONFIG_RFKILL_LEDS */
+
+static void rfkill_uevent(struct rfkill *rfkill)
+{
+ if (!rfkill->registered || rfkill->suspended)
+ return;
+
+ kobject_uevent(&rfkill->dev.kobj, KOBJ_CHANGE);
+}
+
+static bool __rfkill_set_hw_state(struct rfkill *rfkill,
+ bool blocked, bool *change)
+{
+ unsigned long flags;
+ bool prev, any;
+
+ BUG_ON(!rfkill);
+
+ spin_lock_irqsave(&rfkill->lock, flags);
+ prev = !!(rfkill->state & RFKILL_BLOCK_HW);
+ if (blocked)
+ rfkill->state |= RFKILL_BLOCK_HW;
+ else
+ rfkill->state &= ~RFKILL_BLOCK_HW;
+ *change = prev != blocked;
+ any = rfkill->state & RFKILL_BLOCK_ANY;
+ spin_unlock_irqrestore(&rfkill->lock, flags);
+
+ rfkill_led_trigger_event(rfkill);
+
+ return any;
+}
+
+/**
+ * rfkill_set_block - wrapper for set_block method
+ *
+ * @rfkill: the rfkill struct to use
+ * @blocked: the new software state
+ *
+ * Calls the set_block method (when applicable) and handles notifications
+ * etc. as well.
+ */
+static void rfkill_set_block(struct rfkill *rfkill, bool blocked)
+{
+ unsigned long flags;
+ int err;
+
+ /*
+ * Some platforms (...!) generate input events which affect the
+ * _hard_ kill state -- whenever something tries to change the
+ * current software state query the hardware state too.
+ */
+ if (rfkill->ops->query)
+ rfkill->ops->query(rfkill, rfkill->data);
+
+ spin_lock_irqsave(&rfkill->lock, flags);
+ if (rfkill->state & RFKILL_BLOCK_SW)
+ rfkill->state |= RFKILL_BLOCK_SW_PREV;
+ else
+ rfkill->state &= ~RFKILL_BLOCK_SW_PREV;
+
+ if (blocked)
+ rfkill->state |= RFKILL_BLOCK_SW;
+ else
+ rfkill->state &= ~RFKILL_BLOCK_SW;
+
+ rfkill->state |= RFKILL_BLOCK_SW_SETCALL;
+ spin_unlock_irqrestore(&rfkill->lock, flags);
+
+ if (unlikely(rfkill->dev.power.power_state.event & PM_EVENT_SLEEP))
+ return;
+
+ err = rfkill->ops->set_block(rfkill->data, blocked);
+
+ spin_lock_irqsave(&rfkill->lock, flags);
+ if (err) {
+ /*
+ * Failed -- reset status to _prev, this may be different
+ * from what set set _PREV to earlier in this function
+ * if rfkill_set_sw_state was invoked.
+ */
+ if (rfkill->state & RFKILL_BLOCK_SW_PREV)
+ rfkill->state |= RFKILL_BLOCK_SW;
+ else
+ rfkill->state &= ~RFKILL_BLOCK_SW;
+ }
+ rfkill->state &= ~RFKILL_BLOCK_SW_SETCALL;
+ rfkill->state &= ~RFKILL_BLOCK_SW_PREV;
+ spin_unlock_irqrestore(&rfkill->lock, flags);
+
+ rfkill_led_trigger_event(rfkill);
+ rfkill_uevent(rfkill);
+}
+
+/**
+ * __rfkill_switch_all - Toggle state of all switches of given type
+ * @type: type of interfaces to be affected
+ * @state: the new state
+ *
+ * This function sets the state of all switches of given type,
+ * unless a specific switch is claimed by userspace (in which case,
+ * that switch is left alone) or suspended.
+ *
+ * Caller must have acquired rfkill_global_mutex.
+ */
+static void __rfkill_switch_all(const enum rfkill_type type, bool blocked)
+{
+ struct rfkill *rfkill;
+
+ rfkill_global_states[type].cur = blocked;
+ list_for_each_entry(rfkill, &rfkill_list, node) {
+ if (rfkill->type != type)
+ continue;
+
+ rfkill_set_block(rfkill, blocked);
+ }
+}
+
+/**
+ * rfkill_switch_all - Toggle state of all switches of given type
+ * @type: type of interfaces to be affected
+ * @state: the new state
+ *
+ * Acquires rfkill_global_mutex and calls __rfkill_switch_all(@type, @state).
+ * Please refer to __rfkill_switch_all() for details.
+ *
+ * Does nothing if the EPO lock is active.
+ */
+void rfkill_switch_all(enum rfkill_type type, bool blocked)
+{
+ mutex_lock(&rfkill_global_mutex);
+
+ if (!rfkill_epo_lock_active)
+ __rfkill_switch_all(type, blocked);
+
+ mutex_unlock(&rfkill_global_mutex);
+}
+
+/**
+ * rfkill_epo - emergency power off all transmitters
+ *
+ * This kicks all non-suspended rfkill devices to RFKILL_STATE_SOFT_BLOCKED,
+ * ignoring everything in its path but rfkill_global_mutex and rfkill->mutex.
+ *
+ * The global state before the EPO is saved and can be restored later
+ * using rfkill_restore_states().
+ */
+void rfkill_epo(void)
+{
+ struct rfkill *rfkill;
+ int i;
+
+ mutex_lock(&rfkill_global_mutex);
+
+ rfkill_epo_lock_active = true;
+ list_for_each_entry(rfkill, &rfkill_list, node)
+ rfkill_set_block(rfkill, true);
+
+ for (i = 0; i < NUM_RFKILL_TYPES; i++) {
+ rfkill_global_states[i].def = rfkill_global_states[i].cur;
+ rfkill_global_states[i].cur = true;
+ }
+ mutex_unlock(&rfkill_global_mutex);
+}
+
+/**
+ * rfkill_restore_states - restore global states
+ *
+ * Restore (and sync switches to) the global state from the
+ * states in rfkill_default_states. This can undo the effects of
+ * a call to rfkill_epo().
+ */
+void rfkill_restore_states(void)
+{
+ int i;
+
+ mutex_lock(&rfkill_global_mutex);
+
+ rfkill_epo_lock_active = false;
+ for (i = 0; i < NUM_RFKILL_TYPES; i++)
+ __rfkill_switch_all(i, rfkill_global_states[i].def);
+ mutex_unlock(&rfkill_global_mutex);
+}
+
+/**
+ * rfkill_remove_epo_lock - unlock state changes
+ *
+ * Used by rfkill-input manually unlock state changes, when
+ * the EPO switch is deactivated.
+ */
+void rfkill_remove_epo_lock(void)
+{
+ mutex_lock(&rfkill_global_mutex);
+ rfkill_epo_lock_active = false;
+ mutex_unlock(&rfkill_global_mutex);
+}
+
+/**
+ * rfkill_is_epo_lock_active - returns true EPO is active
+ *
+ * Returns 0 (false) if there is NOT an active EPO contidion,
+ * and 1 (true) if there is an active EPO contition, which
+ * locks all radios in one of the BLOCKED states.
+ *
+ * Can be called in atomic context.
+ */
+bool rfkill_is_epo_lock_active(void)
+{
+ return rfkill_epo_lock_active;
+}
+
+/**
+ * rfkill_get_global_sw_state - returns global state for a type
+ * @type: the type to get the global state of
+ *
+ * Returns the current global state for a given wireless
+ * device type.
+ */
+bool rfkill_get_global_sw_state(const enum rfkill_type type)
+{
+ return rfkill_global_states[type].cur;
+}
+
+void rfkill_set_global_sw_state(const enum rfkill_type type, bool blocked)
+{
+ mutex_lock(&rfkill_global_mutex);
+
+ /* don't allow unblock when epo */
+ if (rfkill_epo_lock_active && !blocked)
+ goto out;
+
+ /* too late */
+ if (rfkill_states_default_locked & BIT(type))
+ goto out;
+
+ rfkill_states_default_locked |= BIT(type);
+
+ rfkill_global_states[type].cur = blocked;
+ rfkill_global_states[type].def = blocked;
+ out:
+ mutex_unlock(&rfkill_global_mutex);
+}
+EXPORT_SYMBOL(rfkill_set_global_sw_state);
+
+
+bool rfkill_set_hw_state(struct rfkill *rfkill, bool blocked)
+{
+ bool ret, change;
+
+ ret = __rfkill_set_hw_state(rfkill, blocked, &change);
+
+ if (!rfkill->registered)
+ return ret;
+
+ if (change)
+ schedule_work(&rfkill->uevent_work);
+
+ return ret;
+}
+EXPORT_SYMBOL(rfkill_set_hw_state);
+
+static void __rfkill_set_sw_state(struct rfkill *rfkill, bool blocked)
+{
+ u32 bit = RFKILL_BLOCK_SW;
+
+ /* if in a ops->set_block right now, use other bit */
+ if (rfkill->state & RFKILL_BLOCK_SW_SETCALL)
+ bit = RFKILL_BLOCK_SW_PREV;
+
+ if (blocked)
+ rfkill->state |= bit;
+ else
+ rfkill->state &= ~bit;
+}
+
+bool rfkill_set_sw_state(struct rfkill *rfkill, bool blocked)
+{
+ unsigned long flags;
+ bool prev, hwblock;
+
+ BUG_ON(!rfkill);
+
+ spin_lock_irqsave(&rfkill->lock, flags);
+ prev = !!(rfkill->state & RFKILL_BLOCK_SW);
+ __rfkill_set_sw_state(rfkill, blocked);
+ hwblock = !!(rfkill->state & RFKILL_BLOCK_HW);
+ blocked = blocked || hwblock;
+ spin_unlock_irqrestore(&rfkill->lock, flags);
+
+ if (!rfkill->registered)
+ return blocked;
+
+ if (prev != blocked && !hwblock)
+ schedule_work(&rfkill->uevent_work);
+
+ rfkill_led_trigger_event(rfkill);
+
+ return blocked;
+}
+EXPORT_SYMBOL(rfkill_set_sw_state);
+
+void rfkill_set_states(struct rfkill *rfkill, bool sw, bool hw)
+{
+ unsigned long flags;
+ bool swprev, hwprev;
+
+ BUG_ON(!rfkill);
+
+ spin_lock_irqsave(&rfkill->lock, flags);
+
+ /*
+ * No need to care about prev/setblock ... this is for uevent only
+ * and that will get triggered by rfkill_set_block anyway.
+ */
+ swprev = !!(rfkill->state & RFKILL_BLOCK_SW);
+ hwprev = !!(rfkill->state & RFKILL_BLOCK_HW);
+ __rfkill_set_sw_state(rfkill, sw);
+
+ spin_unlock_irqrestore(&rfkill->lock, flags);
+
+ if (!rfkill->registered)
+ return;
+
+ if (swprev != sw || hwprev != hw)
+ schedule_work(&rfkill->uevent_work);
+
+ rfkill_led_trigger_event(rfkill);
+}
+EXPORT_SYMBOL(rfkill_set_states);
+
+static ssize_t rfkill_name_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct rfkill *rfkill = to_rfkill(dev);
+
+ return sprintf(buf, "%s\n", rfkill->name);
+}
+
+static const char *rfkill_get_type_str(enum rfkill_type type)
+{
+ switch (type) {
+ case RFKILL_TYPE_WLAN:
+ return "wlan";
+ case RFKILL_TYPE_BLUETOOTH:
+ return "bluetooth";
+ case RFKILL_TYPE_UWB:
+ return "ultrawideband";
+ case RFKILL_TYPE_WIMAX:
+ return "wimax";
+ case RFKILL_TYPE_WWAN:
+ return "wwan";
+ default:
+ BUG();
+ }
+
+ BUILD_BUG_ON(NUM_RFKILL_TYPES != RFKILL_TYPE_WWAN + 1);
+}
+
+static ssize_t rfkill_type_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct rfkill *rfkill = to_rfkill(dev);
+
+ return sprintf(buf, "%s\n", rfkill_get_type_str(rfkill->type));
+}
+
+static u8 user_state_from_blocked(unsigned long state)
+{
+ if (state & RFKILL_BLOCK_HW)
+ return RFKILL_USER_STATE_HARD_BLOCKED;
+ if (state & RFKILL_BLOCK_SW)
+ return RFKILL_USER_STATE_SOFT_BLOCKED;
+
+ return RFKILL_USER_STATE_UNBLOCKED;
+}
+
+static ssize_t rfkill_state_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct rfkill *rfkill = to_rfkill(dev);
+ unsigned long flags;
+ u32 state;
+
+ spin_lock_irqsave(&rfkill->lock, flags);
+ state = rfkill->state;
+ spin_unlock_irqrestore(&rfkill->lock, flags);
+
+ return sprintf(buf, "%d\n", user_state_from_blocked(state));
+}
+
+static ssize_t rfkill_state_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ /*
+ * The intention was that userspace can only take control over
+ * a given device when/if rfkill-input doesn't control it due
+ * to user_claim. Since user_claim is currently unsupported,
+ * we never support changing the state from userspace -- this
+ * can be implemented again later.
+ */
+
+ return -EPERM;
+}
+
+static ssize_t rfkill_claim_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ return sprintf(buf, "%d\n", 0);
+}
+
+static ssize_t rfkill_claim_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return -EOPNOTSUPP;
+}
+
+static struct device_attribute rfkill_dev_attrs[] = {
+ __ATTR(name, S_IRUGO, rfkill_name_show, NULL),
+ __ATTR(type, S_IRUGO, rfkill_type_show, NULL),
+ __ATTR(state, S_IRUGO|S_IWUSR, rfkill_state_show, rfkill_state_store),
+ __ATTR(claim, S_IRUGO|S_IWUSR, rfkill_claim_show, rfkill_claim_store),
+ __ATTR_NULL
+};
+
+static void rfkill_release(struct device *dev)
+{
+ struct rfkill *rfkill = to_rfkill(dev);
+
+ kfree(rfkill);
+}
+
+static int rfkill_dev_uevent(struct device *dev, struct kobj_uevent_env *env)
+{
+ struct rfkill *rfkill = to_rfkill(dev);
+ unsigned long flags;
+ u32 state;
+ int error;
+
+ error = add_uevent_var(env, "RFKILL_NAME=%s", rfkill->name);
+ if (error)
+ return error;
+ error = add_uevent_var(env, "RFKILL_TYPE=%s",
+ rfkill_get_type_str(rfkill->type));
+ if (error)
+ return error;
+ spin_lock_irqsave(&rfkill->lock, flags);
+ state = rfkill->state;
+ spin_unlock_irqrestore(&rfkill->lock, flags);
+ error = add_uevent_var(env, "RFKILL_STATE=%d",
+ user_state_from_blocked(state));
+ return error;
+}
+
+void rfkill_pause_polling(struct rfkill *rfkill)
+{
+ BUG_ON(!rfkill);
+
+ if (!rfkill->ops->poll)
+ return;
+
+ cancel_delayed_work_sync(&rfkill->poll_work);
+}
+EXPORT_SYMBOL(rfkill_pause_polling);
+
+void rfkill_resume_polling(struct rfkill *rfkill)
+{
+ BUG_ON(!rfkill);
+
+ if (!rfkill->ops->poll)
+ return;
+
+ schedule_work(&rfkill->poll_work.work);
+}
+EXPORT_SYMBOL(rfkill_resume_polling);
+
+static int rfkill_suspend(struct device *dev, pm_message_t state)
+{
+ struct rfkill *rfkill = to_rfkill(dev);
+
+ rfkill_pause_polling(rfkill);
+
+ rfkill->suspended = true;
+
+ return 0;
+}
+
+static int rfkill_resume(struct device *dev)
+{
+ struct rfkill *rfkill = to_rfkill(dev);
+ bool cur;
+
+ mutex_lock(&rfkill_global_mutex);
+ cur = rfkill_global_states[rfkill->type].cur;
+ rfkill_set_block(rfkill, cur);
+ mutex_unlock(&rfkill_global_mutex);
+
+ rfkill->suspended = false;
+
+ schedule_work(&rfkill->uevent_work);
+
+ rfkill_resume_polling(rfkill);
+
+ return 0;
+}
+
+static struct class rfkill_class = {
+ .name = "rfkill",
+ .dev_release = rfkill_release,
+ .dev_attrs = rfkill_dev_attrs,
+ .dev_uevent = rfkill_dev_uevent,
+ .suspend = rfkill_suspend,
+ .resume = rfkill_resume,
+};
+
+
+struct rfkill * __must_check rfkill_alloc(const char *name,
+ struct device *parent,
+ const enum rfkill_type type,
+ const struct rfkill_ops *ops,
+ void *ops_data)
+{
+ struct rfkill *rfkill;
+ struct device *dev;
+
+ if (WARN_ON(!ops))
+ return NULL;
+
+ if (WARN_ON(!ops->set_block))
+ return NULL;
+
+ if (WARN_ON(!name))
+ return NULL;
+
+ if (WARN_ON(type >= NUM_RFKILL_TYPES))
+ return NULL;
+
+ rfkill = kzalloc(sizeof(*rfkill), GFP_KERNEL);
+ if (!rfkill)
+ return NULL;
+
+ spin_lock_init(&rfkill->lock);
+ INIT_LIST_HEAD(&rfkill->node);
+ rfkill->type = type;
+ rfkill->name = name;
+ rfkill->ops = ops;
+ rfkill->data = ops_data;
+
+ dev = &rfkill->dev;
+ dev->class = &rfkill_class;
+ dev->parent = parent;
+ device_initialize(dev);
+
+ return rfkill;
+}
+EXPORT_SYMBOL(rfkill_alloc);
+
+static void rfkill_poll(struct work_struct *work)
+{
+ struct rfkill *rfkill;
+
+ rfkill = container_of(work, struct rfkill, poll_work.work);
+
+ /*
+ * Poll hardware state -- driver will use one of the
+ * rfkill_set{,_hw,_sw}_state functions and use its
+ * return value to update the current status.
+ */
+ rfkill->ops->poll(rfkill, rfkill->data);
+
+ schedule_delayed_work(&rfkill->poll_work,
+ round_jiffies_relative(POLL_INTERVAL));
+}
+
+static void rfkill_uevent_work(struct work_struct *work)
+{
+ struct rfkill *rfkill;
+
+ rfkill = container_of(work, struct rfkill, uevent_work);
+
+ rfkill_uevent(rfkill);
+}
+
+static void rfkill_sync_work(struct work_struct *work)
+{
+ struct rfkill *rfkill;
+ bool cur;
+
+ rfkill = container_of(work, struct rfkill, sync_work);
+
+ mutex_lock(&rfkill_global_mutex);
+ cur = rfkill_global_states[rfkill->type].cur;
+ rfkill_set_block(rfkill, cur);
+ mutex_unlock(&rfkill_global_mutex);
+}
+
+int __must_check rfkill_register(struct rfkill *rfkill)
+{
+ static unsigned long rfkill_no;
+ struct device *dev = &rfkill->dev;
+ int error;
+
+ BUG_ON(!rfkill);
+
+ mutex_lock(&rfkill_global_mutex);
+
+ if (rfkill->registered) {
+ error = -EALREADY;
+ goto unlock;
+ }
+
+ dev_set_name(dev, "rfkill%lu", rfkill_no);
+ rfkill_no++;
+
+ if (!(rfkill_states_default_locked & BIT(rfkill->type))) {
+ /* first of its kind */
+ BUILD_BUG_ON(NUM_RFKILL_TYPES >
+ sizeof(rfkill_states_default_locked) * 8);
+ rfkill_states_default_locked |= BIT(rfkill->type);
+ rfkill_global_states[rfkill->type].cur =
+ rfkill_global_states[rfkill->type].def;
+ }
+
+ list_add_tail(&rfkill->node, &rfkill_list);
+
+ error = device_add(dev);
+ if (error)
+ goto remove;
+
+ error = rfkill_led_trigger_register(rfkill);
+ if (error)
+ goto devdel;
+
+ rfkill->registered = true;
+
+ if (rfkill->ops->poll) {
+ INIT_DELAYED_WORK(&rfkill->poll_work, rfkill_poll);
+ schedule_delayed_work(&rfkill->poll_work,
+ round_jiffies_relative(POLL_INTERVAL));
+ }
+
+ INIT_WORK(&rfkill->uevent_work, rfkill_uevent_work);
+
+ INIT_WORK(&rfkill->sync_work, rfkill_sync_work);
+ schedule_work(&rfkill->sync_work);
+
+ mutex_unlock(&rfkill_global_mutex);
+ return 0;
+
+ devdel:
+ device_del(&rfkill->dev);
+ remove:
+ list_del_init(&rfkill->node);
+ unlock:
+ mutex_unlock(&rfkill_global_mutex);
+ return error;
+}
+EXPORT_SYMBOL(rfkill_register);
+
+void rfkill_unregister(struct rfkill *rfkill)
+{
+ BUG_ON(!rfkill);
+
+ if (rfkill->ops->poll)
+ cancel_delayed_work_sync(&rfkill->poll_work);
+
+ cancel_work_sync(&rfkill->uevent_work);
+ cancel_work_sync(&rfkill->sync_work);
+
+ rfkill->registered = false;
+
+ device_del(&rfkill->dev);
+
+ mutex_lock(&rfkill_global_mutex);
+ list_del_init(&rfkill->node);
+ mutex_unlock(&rfkill_global_mutex);
+
+ rfkill_led_trigger_unregister(rfkill);
+}
+EXPORT_SYMBOL(rfkill_unregister);
+
+void rfkill_destroy(struct rfkill *rfkill)
+{
+ if (rfkill)
+ put_device(&rfkill->dev);
+}
+EXPORT_SYMBOL(rfkill_destroy);
+
+
+static int __init rfkill_init(void)
+{
+ int error;
+ int i;
+
+ for (i = 0; i < NUM_RFKILL_TYPES; i++)
+ rfkill_global_states[i].def = !rfkill_default_state;
+
+ error = class_register(&rfkill_class);
+ if (error)
+ goto out;
+
+#ifdef CONFIG_RFKILL_INPUT
+ error = rfkill_handler_init();
+ if (error)
+ class_unregister(&rfkill_class);
+#endif
+
+ out:
+ return error;
+}
+subsys_initcall(rfkill_init);
+
+static void __exit rfkill_exit(void)
+{
+#ifdef CONFIG_RFKILL_INPUT
+ rfkill_handler_exit();
+#endif
+ class_unregister(&rfkill_class);
+}
+module_exit(rfkill_exit);
--- /dev/null
+/*
+ * Input layer to RF Kill interface connector
+ *
+ * Copyright (c) 2007 Dmitry Torokhov
+ * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ *
+ * If you ever run into a situation in which you have a SW_ type rfkill
+ * input device, then you can revive code that was removed in the patch
+ * "rfkill-input: remove unused code".
+ */
+
+#include <linux/input.h>
+#include <linux/slab.h>
+#include <linux/workqueue.h>
+#include <linux/init.h>
+#include <linux/rfkill.h>
+#include <linux/sched.h>
+
+#include "rfkill.h"
+
+enum rfkill_input_master_mode {
+ RFKILL_INPUT_MASTER_UNLOCK = 0,
+ RFKILL_INPUT_MASTER_RESTORE = 1,
+ RFKILL_INPUT_MASTER_UNBLOCKALL = 2,
+ NUM_RFKILL_INPUT_MASTER_MODES
+};
+
+/* Delay (in ms) between consecutive switch ops */
+#define RFKILL_OPS_DELAY 200
+
+static enum rfkill_input_master_mode rfkill_master_switch_mode =
+ RFKILL_INPUT_MASTER_UNBLOCKALL;
+module_param_named(master_switch_mode, rfkill_master_switch_mode, uint, 0);
+MODULE_PARM_DESC(master_switch_mode,
+ "SW_RFKILL_ALL ON should: 0=do nothing (only unlock); 1=restore; 2=unblock all");
+
+static spinlock_t rfkill_op_lock;
+static bool rfkill_op_pending;
+static unsigned long rfkill_sw_pending[BITS_TO_LONGS(NUM_RFKILL_TYPES)];
+static unsigned long rfkill_sw_state[BITS_TO_LONGS(NUM_RFKILL_TYPES)];
+
+enum rfkill_sched_op {
+ RFKILL_GLOBAL_OP_EPO = 0,
+ RFKILL_GLOBAL_OP_RESTORE,
+ RFKILL_GLOBAL_OP_UNLOCK,
+ RFKILL_GLOBAL_OP_UNBLOCK,
+};
+
+static enum rfkill_sched_op rfkill_master_switch_op;
+static enum rfkill_sched_op rfkill_op;
+
+static void __rfkill_handle_global_op(enum rfkill_sched_op op)
+{
+ unsigned int i;
+
+ switch (op) {
+ case RFKILL_GLOBAL_OP_EPO:
+ rfkill_epo();
+ break;
+ case RFKILL_GLOBAL_OP_RESTORE:
+ rfkill_restore_states();
+ break;
+ case RFKILL_GLOBAL_OP_UNLOCK:
+ rfkill_remove_epo_lock();
+ break;
+ case RFKILL_GLOBAL_OP_UNBLOCK:
+ rfkill_remove_epo_lock();
+ for (i = 0; i < NUM_RFKILL_TYPES; i++)
+ rfkill_switch_all(i, false);
+ break;
+ default:
+ /* memory corruption or bug, fail safely */
+ rfkill_epo();
+ WARN(1, "Unknown requested operation %d! "
+ "rfkill Emergency Power Off activated\n",
+ op);
+ }
+}
+
+static void __rfkill_handle_normal_op(const enum rfkill_type type,
+ const bool complement)
+{
+ bool blocked;
+
+ blocked = rfkill_get_global_sw_state(type);
+ if (complement)
+ blocked = !blocked;
+
+ rfkill_switch_all(type, blocked);
+}
+
+static void rfkill_op_handler(struct work_struct *work)
+{
+ unsigned int i;
+ bool c;
+
+ spin_lock_irq(&rfkill_op_lock);
+ do {
+ if (rfkill_op_pending) {
+ enum rfkill_sched_op op = rfkill_op;
+ rfkill_op_pending = false;
+ memset(rfkill_sw_pending, 0,
+ sizeof(rfkill_sw_pending));
+ spin_unlock_irq(&rfkill_op_lock);
+
+ __rfkill_handle_global_op(op);
+
+ spin_lock_irq(&rfkill_op_lock);
+
+ /*
+ * handle global ops first -- during unlocked period
+ * we might have gotten a new global op.
+ */
+ if (rfkill_op_pending)
+ continue;
+ }
+
+ if (rfkill_is_epo_lock_active())
+ continue;
+
+ for (i = 0; i < NUM_RFKILL_TYPES; i++) {
+ if (__test_and_clear_bit(i, rfkill_sw_pending)) {
+ c = __test_and_clear_bit(i, rfkill_sw_state);
+ spin_unlock_irq(&rfkill_op_lock);
+
+ __rfkill_handle_normal_op(i, c);
+
+ spin_lock_irq(&rfkill_op_lock);
+ }
+ }
+ } while (rfkill_op_pending);
+ spin_unlock_irq(&rfkill_op_lock);
+}
+
+static DECLARE_DELAYED_WORK(rfkill_op_work, rfkill_op_handler);
+static unsigned long rfkill_last_scheduled;
+
+static unsigned long rfkill_ratelimit(const unsigned long last)
+{
+ const unsigned long delay = msecs_to_jiffies(RFKILL_OPS_DELAY);
+ return (time_after(jiffies, last + delay)) ? 0 : delay;
+}
+
+static void rfkill_schedule_ratelimited(void)
+{
+ if (delayed_work_pending(&rfkill_op_work))
+ return;
+ schedule_delayed_work(&rfkill_op_work,
+ rfkill_ratelimit(rfkill_last_scheduled));
+ rfkill_last_scheduled = jiffies;
+}
+
+static void rfkill_schedule_global_op(enum rfkill_sched_op op)
+{
+ unsigned long flags;
+
+ spin_lock_irqsave(&rfkill_op_lock, flags);
+ rfkill_op = op;
+ rfkill_op_pending = true;
+ if (op == RFKILL_GLOBAL_OP_EPO && !rfkill_is_epo_lock_active()) {
+ /* bypass the limiter for EPO */
+ cancel_delayed_work(&rfkill_op_work);
+ schedule_delayed_work(&rfkill_op_work, 0);
+ rfkill_last_scheduled = jiffies;
+ } else
+ rfkill_schedule_ratelimited();
+ spin_unlock_irqrestore(&rfkill_op_lock, flags);
+}
+
+static void rfkill_schedule_toggle(enum rfkill_type type)
+{
+ unsigned long flags;
+
+ if (rfkill_is_epo_lock_active())
+ return;
+
+ spin_lock_irqsave(&rfkill_op_lock, flags);
+ if (!rfkill_op_pending) {
+ __set_bit(type, rfkill_sw_pending);
+ __change_bit(type, rfkill_sw_state);
+ rfkill_schedule_ratelimited();
+ }
+ spin_unlock_irqrestore(&rfkill_op_lock, flags);
+}
+
+static void rfkill_schedule_evsw_rfkillall(int state)
+{
+ if (state)
+ rfkill_schedule_global_op(rfkill_master_switch_op);
+ else
+ rfkill_schedule_global_op(RFKILL_GLOBAL_OP_EPO);
+}
+
+static void rfkill_event(struct input_handle *handle, unsigned int type,
+ unsigned int code, int data)
+{
+ if (type == EV_KEY && data == 1) {
+ switch (code) {
+ case KEY_WLAN:
+ rfkill_schedule_toggle(RFKILL_TYPE_WLAN);
+ break;
+ case KEY_BLUETOOTH:
+ rfkill_schedule_toggle(RFKILL_TYPE_BLUETOOTH);
+ break;
+ case KEY_UWB:
+ rfkill_schedule_toggle(RFKILL_TYPE_UWB);
+ break;
+ case KEY_WIMAX:
+ rfkill_schedule_toggle(RFKILL_TYPE_WIMAX);
+ break;
+ }
+ } else if (type == EV_SW && code == SW_RFKILL_ALL)
+ rfkill_schedule_evsw_rfkillall(data);
+}
+
+static int rfkill_connect(struct input_handler *handler, struct input_dev *dev,
+ const struct input_device_id *id)
+{
+ struct input_handle *handle;
+ int error;
+
+ handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
+ if (!handle)
+ return -ENOMEM;
+
+ handle->dev = dev;
+ handle->handler = handler;
+ handle->name = "rfkill";
+
+ /* causes rfkill_start() to be called */
+ error = input_register_handle(handle);
+ if (error)
+ goto err_free_handle;
+
+ error = input_open_device(handle);
+ if (error)
+ goto err_unregister_handle;
+
+ return 0;
+
+ err_unregister_handle:
+ input_unregister_handle(handle);
+ err_free_handle:
+ kfree(handle);
+ return error;
+}
+
+static void rfkill_start(struct input_handle *handle)
+{
+ /*
+ * Take event_lock to guard against configuration changes, we
+ * should be able to deal with concurrency with rfkill_event()
+ * just fine (which event_lock will also avoid).
+ */
+ spin_lock_irq(&handle->dev->event_lock);
+
+ if (test_bit(EV_SW, handle->dev->evbit) &&
+ test_bit(SW_RFKILL_ALL, handle->dev->swbit))
+ rfkill_schedule_evsw_rfkillall(test_bit(SW_RFKILL_ALL,
+ handle->dev->sw));
+
+ spin_unlock_irq(&handle->dev->event_lock);
+}
+
+static void rfkill_disconnect(struct input_handle *handle)
+{
+ input_close_device(handle);
+ input_unregister_handle(handle);
+ kfree(handle);
+}
+
+static const struct input_device_id rfkill_ids[] = {
+ {
+ .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
+ .evbit = { BIT_MASK(EV_KEY) },
+ .keybit = { [BIT_WORD(KEY_WLAN)] = BIT_MASK(KEY_WLAN) },
+ },
+ {
+ .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
+ .evbit = { BIT_MASK(EV_KEY) },
+ .keybit = { [BIT_WORD(KEY_BLUETOOTH)] = BIT_MASK(KEY_BLUETOOTH) },
+ },
+ {
+ .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
+ .evbit = { BIT_MASK(EV_KEY) },
+ .keybit = { [BIT_WORD(KEY_UWB)] = BIT_MASK(KEY_UWB) },
+ },
+ {
+ .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
+ .evbit = { BIT_MASK(EV_KEY) },
+ .keybit = { [BIT_WORD(KEY_WIMAX)] = BIT_MASK(KEY_WIMAX) },
+ },
+ {
+ .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_SWBIT,
+ .evbit = { BIT(EV_SW) },
+ .swbit = { [BIT_WORD(SW_RFKILL_ALL)] = BIT_MASK(SW_RFKILL_ALL) },
+ },
+ { }
+};
+
+static struct input_handler rfkill_handler = {
+ .name = "rfkill",
+ .event = rfkill_event,
+ .connect = rfkill_connect,
+ .start = rfkill_start,
+ .disconnect = rfkill_disconnect,
+ .id_table = rfkill_ids,
+};
+
+int __init rfkill_handler_init(void)
+{
+ switch (rfkill_master_switch_mode) {
+ case RFKILL_INPUT_MASTER_UNBLOCKALL:
+ rfkill_master_switch_op = RFKILL_GLOBAL_OP_UNBLOCK;
+ break;
+ case RFKILL_INPUT_MASTER_RESTORE:
+ rfkill_master_switch_op = RFKILL_GLOBAL_OP_RESTORE;
+ break;
+ case RFKILL_INPUT_MASTER_UNLOCK:
+ rfkill_master_switch_op = RFKILL_GLOBAL_OP_UNLOCK;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ spin_lock_init(&rfkill_op_lock);
+
+ /* Avoid delay at first schedule */
+ rfkill_last_scheduled =
+ jiffies - msecs_to_jiffies(RFKILL_OPS_DELAY) - 1;
+ return input_register_handler(&rfkill_handler);
+}
+
+void __exit rfkill_handler_exit(void)
+{
+ input_unregister_handler(&rfkill_handler);
+ cancel_delayed_work_sync(&rfkill_op_work);
+}
+++ /dev/null
-/*
- * Input layer to RF Kill interface connector
- *
- * Copyright (c) 2007 Dmitry Torokhov
- */
-
-/*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/input.h>
-#include <linux/slab.h>
-#include <linux/workqueue.h>
-#include <linux/init.h>
-#include <linux/rfkill.h>
-#include <linux/sched.h>
-
-#include "rfkill-input.h"
-
-MODULE_AUTHOR("Dmitry Torokhov <dtor@mail.ru>");
-MODULE_DESCRIPTION("Input layer to RF switch connector");
-MODULE_LICENSE("GPL");
-
-enum rfkill_input_master_mode {
- RFKILL_INPUT_MASTER_DONOTHING = 0,
- RFKILL_INPUT_MASTER_RESTORE = 1,
- RFKILL_INPUT_MASTER_UNBLOCKALL = 2,
- RFKILL_INPUT_MASTER_MAX, /* marker */
-};
-
-/* Delay (in ms) between consecutive switch ops */
-#define RFKILL_OPS_DELAY 200
-
-static enum rfkill_input_master_mode rfkill_master_switch_mode =
- RFKILL_INPUT_MASTER_UNBLOCKALL;
-module_param_named(master_switch_mode, rfkill_master_switch_mode, uint, 0);
-MODULE_PARM_DESC(master_switch_mode,
- "SW_RFKILL_ALL ON should: 0=do nothing; 1=restore; 2=unblock all");
-
-enum rfkill_global_sched_op {
- RFKILL_GLOBAL_OP_EPO = 0,
- RFKILL_GLOBAL_OP_RESTORE,
- RFKILL_GLOBAL_OP_UNLOCK,
- RFKILL_GLOBAL_OP_UNBLOCK,
-};
-
-struct rfkill_task {
- struct delayed_work dwork;
-
- /* ensures that task is serialized */
- struct mutex mutex;
-
- /* protects everything below */
- spinlock_t lock;
-
- /* pending regular switch operations (1=pending) */
- unsigned long sw_pending[BITS_TO_LONGS(RFKILL_TYPE_MAX)];
-
- /* should the state be complemented (1=yes) */
- unsigned long sw_togglestate[BITS_TO_LONGS(RFKILL_TYPE_MAX)];
-
- bool global_op_pending;
- enum rfkill_global_sched_op op;
-
- /* last time it was scheduled */
- unsigned long last_scheduled;
-};
-
-static void __rfkill_handle_global_op(enum rfkill_global_sched_op op)
-{
- unsigned int i;
-
- switch (op) {
- case RFKILL_GLOBAL_OP_EPO:
- rfkill_epo();
- break;
- case RFKILL_GLOBAL_OP_RESTORE:
- rfkill_restore_states();
- break;
- case RFKILL_GLOBAL_OP_UNLOCK:
- rfkill_remove_epo_lock();
- break;
- case RFKILL_GLOBAL_OP_UNBLOCK:
- rfkill_remove_epo_lock();
- for (i = 0; i < RFKILL_TYPE_MAX; i++)
- rfkill_switch_all(i, RFKILL_STATE_UNBLOCKED);
- break;
- default:
- /* memory corruption or bug, fail safely */
- rfkill_epo();
- WARN(1, "Unknown requested operation %d! "
- "rfkill Emergency Power Off activated\n",
- op);
- }
-}
-
-static void __rfkill_handle_normal_op(const enum rfkill_type type,
- const bool c)
-{
- enum rfkill_state state;
-
- state = rfkill_get_global_state(type);
- if (c)
- state = rfkill_state_complement(state);
-
- rfkill_switch_all(type, state);
-}
-
-static void rfkill_task_handler(struct work_struct *work)
-{
- struct rfkill_task *task = container_of(work,
- struct rfkill_task, dwork.work);
- bool doit = true;
-
- mutex_lock(&task->mutex);
-
- spin_lock_irq(&task->lock);
- while (doit) {
- if (task->global_op_pending) {
- enum rfkill_global_sched_op op = task->op;
- task->global_op_pending = false;
- memset(task->sw_pending, 0, sizeof(task->sw_pending));
- spin_unlock_irq(&task->lock);
-
- __rfkill_handle_global_op(op);
-
- /* make sure we do at least one pass with
- * !task->global_op_pending */
- spin_lock_irq(&task->lock);
- continue;
- } else if (!rfkill_is_epo_lock_active()) {
- unsigned int i = 0;
-
- while (!task->global_op_pending &&
- i < RFKILL_TYPE_MAX) {
- if (test_and_clear_bit(i, task->sw_pending)) {
- bool c;
- c = test_and_clear_bit(i,
- task->sw_togglestate);
- spin_unlock_irq(&task->lock);
-
- __rfkill_handle_normal_op(i, c);
-
- spin_lock_irq(&task->lock);
- }
- i++;
- }
- }
- doit = task->global_op_pending;
- }
- spin_unlock_irq(&task->lock);
-
- mutex_unlock(&task->mutex);
-}
-
-static struct rfkill_task rfkill_task = {
- .dwork = __DELAYED_WORK_INITIALIZER(rfkill_task.dwork,
- rfkill_task_handler),
- .mutex = __MUTEX_INITIALIZER(rfkill_task.mutex),
- .lock = __SPIN_LOCK_UNLOCKED(rfkill_task.lock),
-};
-
-static unsigned long rfkill_ratelimit(const unsigned long last)
-{
- const unsigned long delay = msecs_to_jiffies(RFKILL_OPS_DELAY);
- return (time_after(jiffies, last + delay)) ? 0 : delay;
-}
-
-static void rfkill_schedule_ratelimited(void)
-{
- if (!delayed_work_pending(&rfkill_task.dwork)) {
- schedule_delayed_work(&rfkill_task.dwork,
- rfkill_ratelimit(rfkill_task.last_scheduled));
- rfkill_task.last_scheduled = jiffies;
- }
-}
-
-static void rfkill_schedule_global_op(enum rfkill_global_sched_op op)
-{
- unsigned long flags;
-
- spin_lock_irqsave(&rfkill_task.lock, flags);
- rfkill_task.op = op;
- rfkill_task.global_op_pending = true;
- if (op == RFKILL_GLOBAL_OP_EPO && !rfkill_is_epo_lock_active()) {
- /* bypass the limiter for EPO */
- cancel_delayed_work(&rfkill_task.dwork);
- schedule_delayed_work(&rfkill_task.dwork, 0);
- rfkill_task.last_scheduled = jiffies;
- } else
- rfkill_schedule_ratelimited();
- spin_unlock_irqrestore(&rfkill_task.lock, flags);
-}
-
-static void rfkill_schedule_toggle(enum rfkill_type type)
-{
- unsigned long flags;
-
- if (rfkill_is_epo_lock_active())
- return;
-
- spin_lock_irqsave(&rfkill_task.lock, flags);
- if (!rfkill_task.global_op_pending) {
- set_bit(type, rfkill_task.sw_pending);
- change_bit(type, rfkill_task.sw_togglestate);
- rfkill_schedule_ratelimited();
- }
- spin_unlock_irqrestore(&rfkill_task.lock, flags);
-}
-
-static void rfkill_schedule_evsw_rfkillall(int state)
-{
- if (state) {
- switch (rfkill_master_switch_mode) {
- case RFKILL_INPUT_MASTER_UNBLOCKALL:
- rfkill_schedule_global_op(RFKILL_GLOBAL_OP_UNBLOCK);
- break;
- case RFKILL_INPUT_MASTER_RESTORE:
- rfkill_schedule_global_op(RFKILL_GLOBAL_OP_RESTORE);
- break;
- case RFKILL_INPUT_MASTER_DONOTHING:
- rfkill_schedule_global_op(RFKILL_GLOBAL_OP_UNLOCK);
- break;
- default:
- /* memory corruption or driver bug! fail safely */
- rfkill_schedule_global_op(RFKILL_GLOBAL_OP_EPO);
- WARN(1, "Unknown rfkill_master_switch_mode (%d), "
- "driver bug or memory corruption detected!\n",
- rfkill_master_switch_mode);
- break;
- }
- } else
- rfkill_schedule_global_op(RFKILL_GLOBAL_OP_EPO);
-}
-
-static void rfkill_event(struct input_handle *handle, unsigned int type,
- unsigned int code, int data)
-{
- if (type == EV_KEY && data == 1) {
- enum rfkill_type t;
-
- switch (code) {
- case KEY_WLAN:
- t = RFKILL_TYPE_WLAN;
- break;
- case KEY_BLUETOOTH:
- t = RFKILL_TYPE_BLUETOOTH;
- break;
- case KEY_UWB:
- t = RFKILL_TYPE_UWB;
- break;
- case KEY_WIMAX:
- t = RFKILL_TYPE_WIMAX;
- break;
- default:
- return;
- }
- rfkill_schedule_toggle(t);
- return;
- } else if (type == EV_SW) {
- switch (code) {
- case SW_RFKILL_ALL:
- rfkill_schedule_evsw_rfkillall(data);
- return;
- default:
- return;
- }
- }
-}
-
-static int rfkill_connect(struct input_handler *handler, struct input_dev *dev,
- const struct input_device_id *id)
-{
- struct input_handle *handle;
- int error;
-
- handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
- if (!handle)
- return -ENOMEM;
-
- handle->dev = dev;
- handle->handler = handler;
- handle->name = "rfkill";
-
- /* causes rfkill_start() to be called */
- error = input_register_handle(handle);
- if (error)
- goto err_free_handle;
-
- error = input_open_device(handle);
- if (error)
- goto err_unregister_handle;
-
- return 0;
-
- err_unregister_handle:
- input_unregister_handle(handle);
- err_free_handle:
- kfree(handle);
- return error;
-}
-
-static void rfkill_start(struct input_handle *handle)
-{
- /* Take event_lock to guard against configuration changes, we
- * should be able to deal with concurrency with rfkill_event()
- * just fine (which event_lock will also avoid). */
- spin_lock_irq(&handle->dev->event_lock);
-
- if (test_bit(EV_SW, handle->dev->evbit)) {
- if (test_bit(SW_RFKILL_ALL, handle->dev->swbit))
- rfkill_schedule_evsw_rfkillall(test_bit(SW_RFKILL_ALL,
- handle->dev->sw));
- /* add resync for further EV_SW events here */
- }
-
- spin_unlock_irq(&handle->dev->event_lock);
-}
-
-static void rfkill_disconnect(struct input_handle *handle)
-{
- input_close_device(handle);
- input_unregister_handle(handle);
- kfree(handle);
-}
-
-static const struct input_device_id rfkill_ids[] = {
- {
- .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
- .evbit = { BIT_MASK(EV_KEY) },
- .keybit = { [BIT_WORD(KEY_WLAN)] = BIT_MASK(KEY_WLAN) },
- },
- {
- .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
- .evbit = { BIT_MASK(EV_KEY) },
- .keybit = { [BIT_WORD(KEY_BLUETOOTH)] = BIT_MASK(KEY_BLUETOOTH) },
- },
- {
- .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
- .evbit = { BIT_MASK(EV_KEY) },
- .keybit = { [BIT_WORD(KEY_UWB)] = BIT_MASK(KEY_UWB) },
- },
- {
- .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_KEYBIT,
- .evbit = { BIT_MASK(EV_KEY) },
- .keybit = { [BIT_WORD(KEY_WIMAX)] = BIT_MASK(KEY_WIMAX) },
- },
- {
- .flags = INPUT_DEVICE_ID_MATCH_EVBIT | INPUT_DEVICE_ID_MATCH_SWBIT,
- .evbit = { BIT(EV_SW) },
- .swbit = { [BIT_WORD(SW_RFKILL_ALL)] = BIT_MASK(SW_RFKILL_ALL) },
- },
- { }
-};
-
-static struct input_handler rfkill_handler = {
- .event = rfkill_event,
- .connect = rfkill_connect,
- .disconnect = rfkill_disconnect,
- .start = rfkill_start,
- .name = "rfkill",
- .id_table = rfkill_ids,
-};
-
-static int __init rfkill_handler_init(void)
-{
- if (rfkill_master_switch_mode >= RFKILL_INPUT_MASTER_MAX)
- return -EINVAL;
-
- /*
- * The penalty to not doing this is a possible RFKILL_OPS_DELAY delay
- * at the first use. Acceptable, but if we can avoid it, why not?
- */
- rfkill_task.last_scheduled =
- jiffies - msecs_to_jiffies(RFKILL_OPS_DELAY) - 1;
- return input_register_handler(&rfkill_handler);
-}
-
-static void __exit rfkill_handler_exit(void)
-{
- input_unregister_handler(&rfkill_handler);
- cancel_delayed_work_sync(&rfkill_task.dwork);
- rfkill_remove_epo_lock();
-}
-
-module_init(rfkill_handler_init);
-module_exit(rfkill_handler_exit);
+++ /dev/null
-/*
- * Copyright (C) 2007 Ivo van Doorn
- */
-
-/*
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
- */
-
-#ifndef __RFKILL_INPUT_H
-#define __RFKILL_INPUT_H
-
-void rfkill_switch_all(enum rfkill_type type, enum rfkill_state state);
-void rfkill_epo(void);
-void rfkill_restore_states(void);
-void rfkill_remove_epo_lock(void);
-bool rfkill_is_epo_lock_active(void);
-enum rfkill_state rfkill_get_global_state(const enum rfkill_type type);
-
-#endif /* __RFKILL_INPUT_H */
+++ /dev/null
-/*
- * Copyright (C) 2006 - 2007 Ivo van Doorn
- * Copyright (C) 2007 Dmitry Torokhov
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the
- * Free Software Foundation, Inc.,
- * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/workqueue.h>
-#include <linux/capability.h>
-#include <linux/list.h>
-#include <linux/mutex.h>
-#include <linux/rfkill.h>
-
-/* Get declaration of rfkill_switch_all() to shut up sparse. */
-#include "rfkill-input.h"
-
-
-MODULE_AUTHOR("Ivo van Doorn <IvDoorn@gmail.com>");
-MODULE_VERSION("1.0");
-MODULE_DESCRIPTION("RF switch support");
-MODULE_LICENSE("GPL");
-
-static LIST_HEAD(rfkill_list); /* list of registered rf switches */
-static DEFINE_MUTEX(rfkill_global_mutex);
-
-static unsigned int rfkill_default_state = RFKILL_STATE_UNBLOCKED;
-module_param_named(default_state, rfkill_default_state, uint, 0444);
-MODULE_PARM_DESC(default_state,
- "Default initial state for all radio types, 0 = radio off");
-
-struct rfkill_gsw_state {
- enum rfkill_state current_state;
- enum rfkill_state default_state;
-};
-
-static struct rfkill_gsw_state rfkill_global_states[RFKILL_TYPE_MAX];
-static unsigned long rfkill_states_lockdflt[BITS_TO_LONGS(RFKILL_TYPE_MAX)];
-static bool rfkill_epo_lock_active;
-
-
-#ifdef CONFIG_RFKILL_LEDS
-static void rfkill_led_trigger(struct rfkill *rfkill,
- enum rfkill_state state)
-{
- struct led_trigger *led = &rfkill->led_trigger;
-
- if (!led->name)
- return;
- if (state != RFKILL_STATE_UNBLOCKED)
- led_trigger_event(led, LED_OFF);
- else
- led_trigger_event(led, LED_FULL);
-}
-
-static void rfkill_led_trigger_activate(struct led_classdev *led)
-{
- struct rfkill *rfkill = container_of(led->trigger,
- struct rfkill, led_trigger);
-
- rfkill_led_trigger(rfkill, rfkill->state);
-}
-#else
-static inline void rfkill_led_trigger(struct rfkill *rfkill,
- enum rfkill_state state)
-{
-}
-#endif /* CONFIG_RFKILL_LEDS */
-
-static void rfkill_uevent(struct rfkill *rfkill)
-{
- kobject_uevent(&rfkill->dev.kobj, KOBJ_CHANGE);
-}
-
-static void update_rfkill_state(struct rfkill *rfkill)
-{
- enum rfkill_state newstate, oldstate;
-
- if (rfkill->get_state) {
- mutex_lock(&rfkill->mutex);
- if (!rfkill->get_state(rfkill->data, &newstate)) {
- oldstate = rfkill->state;
- rfkill->state = newstate;
- if (oldstate != newstate)
- rfkill_uevent(rfkill);
- }
- mutex_unlock(&rfkill->mutex);
- }
- rfkill_led_trigger(rfkill, rfkill->state);
-}
-
-/**
- * rfkill_toggle_radio - wrapper for toggle_radio hook
- * @rfkill: the rfkill struct to use
- * @force: calls toggle_radio even if cache says it is not needed,
- * and also makes sure notifications of the state will be
- * sent even if it didn't change
- * @state: the new state to call toggle_radio() with
- *
- * Calls rfkill->toggle_radio, enforcing the API for toggle_radio
- * calls and handling all the red tape such as issuing notifications
- * if the call is successful.
- *
- * Suspended devices are not touched at all, and -EAGAIN is returned.
- *
- * Note that the @force parameter cannot override a (possibly cached)
- * state of RFKILL_STATE_HARD_BLOCKED. Any device making use of
- * RFKILL_STATE_HARD_BLOCKED implements either get_state() or
- * rfkill_force_state(), so the cache either is bypassed or valid.
- *
- * Note that we do call toggle_radio for RFKILL_STATE_SOFT_BLOCKED
- * even if the radio is in RFKILL_STATE_HARD_BLOCKED state, so as to
- * give the driver a hint that it should double-BLOCK the transmitter.
- *
- * Caller must have acquired rfkill->mutex.
- */
-static int rfkill_toggle_radio(struct rfkill *rfkill,
- enum rfkill_state state,
- int force)
-{
- int retval = 0;
- enum rfkill_state oldstate, newstate;
-
- if (unlikely(rfkill->dev.power.power_state.event & PM_EVENT_SLEEP))
- return -EBUSY;
-
- oldstate = rfkill->state;
-
- if (rfkill->get_state && !force &&
- !rfkill->get_state(rfkill->data, &newstate)) {
- rfkill->state = newstate;
- }
-
- switch (state) {
- case RFKILL_STATE_HARD_BLOCKED:
- /* typically happens when refreshing hardware state,
- * such as on resume */
- state = RFKILL_STATE_SOFT_BLOCKED;
- break;
- case RFKILL_STATE_UNBLOCKED:
- /* force can't override this, only rfkill_force_state() can */
- if (rfkill->state == RFKILL_STATE_HARD_BLOCKED)
- return -EPERM;
- break;
- case RFKILL_STATE_SOFT_BLOCKED:
- /* nothing to do, we want to give drivers the hint to double
- * BLOCK even a transmitter that is already in state
- * RFKILL_STATE_HARD_BLOCKED */
- break;
- default:
- WARN(1, KERN_WARNING
- "rfkill: illegal state %d passed as parameter "
- "to rfkill_toggle_radio\n", state);
- return -EINVAL;
- }
-
- if (force || state != rfkill->state) {
- retval = rfkill->toggle_radio(rfkill->data, state);
- /* never allow a HARD->SOFT downgrade! */
- if (!retval && rfkill->state != RFKILL_STATE_HARD_BLOCKED)
- rfkill->state = state;
- }
-
- if (force || rfkill->state != oldstate)
- rfkill_uevent(rfkill);
-
- rfkill_led_trigger(rfkill, rfkill->state);
- return retval;
-}
-
-/**
- * __rfkill_switch_all - Toggle state of all switches of given type
- * @type: type of interfaces to be affected
- * @state: the new state
- *
- * This function toggles the state of all switches of given type,
- * unless a specific switch is claimed by userspace (in which case,
- * that switch is left alone) or suspended.
- *
- * Caller must have acquired rfkill_global_mutex.
- */
-static void __rfkill_switch_all(const enum rfkill_type type,
- const enum rfkill_state state)
-{
- struct rfkill *rfkill;
-
- if (WARN((state >= RFKILL_STATE_MAX || type >= RFKILL_TYPE_MAX),
- KERN_WARNING
- "rfkill: illegal state %d or type %d "
- "passed as parameter to __rfkill_switch_all\n",
- state, type))
- return;
-
- rfkill_global_states[type].current_state = state;
- list_for_each_entry(rfkill, &rfkill_list, node) {
- if (rfkill->type == type) {
- mutex_lock(&rfkill->mutex);
- rfkill_toggle_radio(rfkill, state, 0);
- mutex_unlock(&rfkill->mutex);
- rfkill_led_trigger(rfkill, rfkill->state);
- }
- }
-}
-
-/**
- * rfkill_switch_all - Toggle state of all switches of given type
- * @type: type of interfaces to be affected
- * @state: the new state
- *
- * Acquires rfkill_global_mutex and calls __rfkill_switch_all(@type, @state).
- * Please refer to __rfkill_switch_all() for details.
- *
- * Does nothing if the EPO lock is active.
- */
-void rfkill_switch_all(enum rfkill_type type, enum rfkill_state state)
-{
- mutex_lock(&rfkill_global_mutex);
- if (!rfkill_epo_lock_active)
- __rfkill_switch_all(type, state);
- mutex_unlock(&rfkill_global_mutex);
-}
-EXPORT_SYMBOL(rfkill_switch_all);
-
-/**
- * rfkill_epo - emergency power off all transmitters
- *
- * This kicks all non-suspended rfkill devices to RFKILL_STATE_SOFT_BLOCKED,
- * ignoring everything in its path but rfkill_global_mutex and rfkill->mutex.
- *
- * The global state before the EPO is saved and can be restored later
- * using rfkill_restore_states().
- */
-void rfkill_epo(void)
-{
- struct rfkill *rfkill;
- int i;
-
- mutex_lock(&rfkill_global_mutex);
-
- rfkill_epo_lock_active = true;
- list_for_each_entry(rfkill, &rfkill_list, node) {
- mutex_lock(&rfkill->mutex);
- rfkill_toggle_radio(rfkill, RFKILL_STATE_SOFT_BLOCKED, 1);
- mutex_unlock(&rfkill->mutex);
- }
- for (i = 0; i < RFKILL_TYPE_MAX; i++) {
- rfkill_global_states[i].default_state =
- rfkill_global_states[i].current_state;
- rfkill_global_states[i].current_state =
- RFKILL_STATE_SOFT_BLOCKED;
- }
- mutex_unlock(&rfkill_global_mutex);
- rfkill_led_trigger(rfkill, rfkill->state);
-}
-EXPORT_SYMBOL_GPL(rfkill_epo);
-
-/**
- * rfkill_restore_states - restore global states
- *
- * Restore (and sync switches to) the global state from the
- * states in rfkill_default_states. This can undo the effects of
- * a call to rfkill_epo().
- */
-void rfkill_restore_states(void)
-{
- int i;
-
- mutex_lock(&rfkill_global_mutex);
-
- rfkill_epo_lock_active = false;
- for (i = 0; i < RFKILL_TYPE_MAX; i++)
- __rfkill_switch_all(i, rfkill_global_states[i].default_state);
- mutex_unlock(&rfkill_global_mutex);
-}
-EXPORT_SYMBOL_GPL(rfkill_restore_states);
-
-/**
- * rfkill_remove_epo_lock - unlock state changes
- *
- * Used by rfkill-input manually unlock state changes, when
- * the EPO switch is deactivated.
- */
-void rfkill_remove_epo_lock(void)
-{
- mutex_lock(&rfkill_global_mutex);
- rfkill_epo_lock_active = false;
- mutex_unlock(&rfkill_global_mutex);
-}
-EXPORT_SYMBOL_GPL(rfkill_remove_epo_lock);
-
-/**
- * rfkill_is_epo_lock_active - returns true EPO is active
- *
- * Returns 0 (false) if there is NOT an active EPO contidion,
- * and 1 (true) if there is an active EPO contition, which
- * locks all radios in one of the BLOCKED states.
- *
- * Can be called in atomic context.
- */
-bool rfkill_is_epo_lock_active(void)
-{
- return rfkill_epo_lock_active;
-}
-EXPORT_SYMBOL_GPL(rfkill_is_epo_lock_active);
-
-/**
- * rfkill_get_global_state - returns global state for a type
- * @type: the type to get the global state of
- *
- * Returns the current global state for a given wireless
- * device type.
- */
-enum rfkill_state rfkill_get_global_state(const enum rfkill_type type)
-{
- return rfkill_global_states[type].current_state;
-}
-EXPORT_SYMBOL_GPL(rfkill_get_global_state);
-
-/**
- * rfkill_force_state - Force the internal rfkill radio state
- * @rfkill: pointer to the rfkill class to modify.
- * @state: the current radio state the class should be forced to.
- *
- * This function updates the internal state of the radio cached
- * by the rfkill class. It should be used when the driver gets
- * a notification by the firmware/hardware of the current *real*
- * state of the radio rfkill switch.
- *
- * Devices which are subject to external changes on their rfkill
- * state (such as those caused by a hardware rfkill line) MUST
- * have their driver arrange to call rfkill_force_state() as soon
- * as possible after such a change.
- *
- * This function may not be called from an atomic context.
- */
-int rfkill_force_state(struct rfkill *rfkill, enum rfkill_state state)
-{
- enum rfkill_state oldstate;
-
- BUG_ON(!rfkill);
- if (WARN((state >= RFKILL_STATE_MAX),
- KERN_WARNING
- "rfkill: illegal state %d passed as parameter "
- "to rfkill_force_state\n", state))
- return -EINVAL;
-
- mutex_lock(&rfkill->mutex);
-
- oldstate = rfkill->state;
- rfkill->state = state;
-
- if (state != oldstate)
- rfkill_uevent(rfkill);
-
- mutex_unlock(&rfkill->mutex);
- rfkill_led_trigger(rfkill, rfkill->state);
-
- return 0;
-}
-EXPORT_SYMBOL(rfkill_force_state);
-
-static ssize_t rfkill_name_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct rfkill *rfkill = to_rfkill(dev);
-
- return sprintf(buf, "%s\n", rfkill->name);
-}
-
-static const char *rfkill_get_type_str(enum rfkill_type type)
-{
- switch (type) {
- case RFKILL_TYPE_WLAN:
- return "wlan";
- case RFKILL_TYPE_BLUETOOTH:
- return "bluetooth";
- case RFKILL_TYPE_UWB:
- return "ultrawideband";
- case RFKILL_TYPE_WIMAX:
- return "wimax";
- case RFKILL_TYPE_WWAN:
- return "wwan";
- default:
- BUG();
- }
-}
-
-static ssize_t rfkill_type_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct rfkill *rfkill = to_rfkill(dev);
-
- return sprintf(buf, "%s\n", rfkill_get_type_str(rfkill->type));
-}
-
-static ssize_t rfkill_state_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct rfkill *rfkill = to_rfkill(dev);
-
- update_rfkill_state(rfkill);
- return sprintf(buf, "%d\n", rfkill->state);
-}
-
-static ssize_t rfkill_state_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct rfkill *rfkill = to_rfkill(dev);
- unsigned long state;
- int error;
-
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
-
- error = strict_strtoul(buf, 0, &state);
- if (error)
- return error;
-
- /* RFKILL_STATE_HARD_BLOCKED is illegal here... */
- if (state != RFKILL_STATE_UNBLOCKED &&
- state != RFKILL_STATE_SOFT_BLOCKED)
- return -EINVAL;
-
- error = mutex_lock_killable(&rfkill->mutex);
- if (error)
- return error;
-
- if (!rfkill_epo_lock_active)
- error = rfkill_toggle_radio(rfkill, state, 0);
- else
- error = -EPERM;
-
- mutex_unlock(&rfkill->mutex);
-
- return error ? error : count;
-}
-
-static ssize_t rfkill_claim_show(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- return sprintf(buf, "%d\n", 0);
-}
-
-static ssize_t rfkill_claim_store(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- return -EOPNOTSUPP;
-}
-
-static struct device_attribute rfkill_dev_attrs[] = {
- __ATTR(name, S_IRUGO, rfkill_name_show, NULL),
- __ATTR(type, S_IRUGO, rfkill_type_show, NULL),
- __ATTR(state, S_IRUGO|S_IWUSR, rfkill_state_show, rfkill_state_store),
- __ATTR(claim, S_IRUGO|S_IWUSR, rfkill_claim_show, rfkill_claim_store),
- __ATTR_NULL
-};
-
-static void rfkill_release(struct device *dev)
-{
- struct rfkill *rfkill = to_rfkill(dev);
-
- kfree(rfkill);
- module_put(THIS_MODULE);
-}
-
-#ifdef CONFIG_PM
-static int rfkill_suspend(struct device *dev, pm_message_t state)
-{
- struct rfkill *rfkill = to_rfkill(dev);
-
- /* mark class device as suspended */
- if (dev->power.power_state.event != state.event)
- dev->power.power_state = state;
-
- /* store state for the resume handler */
- rfkill->state_for_resume = rfkill->state;
-
- return 0;
-}
-
-static int rfkill_resume(struct device *dev)
-{
- struct rfkill *rfkill = to_rfkill(dev);
- enum rfkill_state newstate;
-
- if (dev->power.power_state.event != PM_EVENT_ON) {
- mutex_lock(&rfkill->mutex);
-
- dev->power.power_state.event = PM_EVENT_ON;
-
- /*
- * rfkill->state could have been modified before we got
- * called, and won't be updated by rfkill_toggle_radio()
- * in force mode. Sync it FIRST.
- */
- if (rfkill->get_state &&
- !rfkill->get_state(rfkill->data, &newstate))
- rfkill->state = newstate;
-
- /*
- * If we are under EPO, kick transmitter offline,
- * otherwise restore to pre-suspend state.
- *
- * Issue a notification in any case
- */
- rfkill_toggle_radio(rfkill,
- rfkill_epo_lock_active ?
- RFKILL_STATE_SOFT_BLOCKED :
- rfkill->state_for_resume,
- 1);
-
- mutex_unlock(&rfkill->mutex);
- rfkill_led_trigger(rfkill, rfkill->state);
- }
-
- return 0;
-}
-#else
-#define rfkill_suspend NULL
-#define rfkill_resume NULL
-#endif
-
-static int rfkill_dev_uevent(struct device *dev, struct kobj_uevent_env *env)
-{
- struct rfkill *rfkill = to_rfkill(dev);
- int error;
-
- error = add_uevent_var(env, "RFKILL_NAME=%s", rfkill->name);
- if (error)
- return error;
- error = add_uevent_var(env, "RFKILL_TYPE=%s",
- rfkill_get_type_str(rfkill->type));
- if (error)
- return error;
- error = add_uevent_var(env, "RFKILL_STATE=%d", rfkill->state);
- return error;
-}
-
-static struct class rfkill_class = {
- .name = "rfkill",
- .dev_release = rfkill_release,
- .dev_attrs = rfkill_dev_attrs,
- .suspend = rfkill_suspend,
- .resume = rfkill_resume,
- .dev_uevent = rfkill_dev_uevent,
-};
-
-static int rfkill_check_duplicity(const struct rfkill *rfkill)
-{
- struct rfkill *p;
- unsigned long seen[BITS_TO_LONGS(RFKILL_TYPE_MAX)];
-
- memset(seen, 0, sizeof(seen));
-
- list_for_each_entry(p, &rfkill_list, node) {
- if (WARN((p == rfkill), KERN_WARNING
- "rfkill: illegal attempt to register "
- "an already registered rfkill struct\n"))
- return -EEXIST;
- set_bit(p->type, seen);
- }
-
- /* 0: first switch of its kind */
- return (test_bit(rfkill->type, seen)) ? 1 : 0;
-}
-
-static int rfkill_add_switch(struct rfkill *rfkill)
-{
- int error;
-
- mutex_lock(&rfkill_global_mutex);
-
- error = rfkill_check_duplicity(rfkill);
- if (error < 0)
- goto unlock_out;
-
- if (!error) {
- /* lock default after first use */
- set_bit(rfkill->type, rfkill_states_lockdflt);
- rfkill_global_states[rfkill->type].current_state =
- rfkill_global_states[rfkill->type].default_state;
- }
-
- rfkill_toggle_radio(rfkill,
- rfkill_global_states[rfkill->type].current_state,
- 0);
-
- list_add_tail(&rfkill->node, &rfkill_list);
-
- error = 0;
-unlock_out:
- mutex_unlock(&rfkill_global_mutex);
-
- return error;
-}
-
-static void rfkill_remove_switch(struct rfkill *rfkill)
-{
- mutex_lock(&rfkill_global_mutex);
- list_del_init(&rfkill->node);
- mutex_unlock(&rfkill_global_mutex);
-
- mutex_lock(&rfkill->mutex);
- rfkill_toggle_radio(rfkill, RFKILL_STATE_SOFT_BLOCKED, 1);
- mutex_unlock(&rfkill->mutex);
-}
-
-/**
- * rfkill_allocate - allocate memory for rfkill structure.
- * @parent: device that has rf switch on it
- * @type: type of the switch (RFKILL_TYPE_*)
- *
- * This function should be called by the network driver when it needs
- * rfkill structure. Once the structure is allocated the driver should
- * finish its initialization by setting the name, private data, enable_radio
- * and disable_radio methods and then register it with rfkill_register().
- *
- * NOTE: If registration fails the structure shoudl be freed by calling
- * rfkill_free() otherwise rfkill_unregister() should be used.
- */
-struct rfkill * __must_check rfkill_allocate(struct device *parent,
- enum rfkill_type type)
-{
- struct rfkill *rfkill;
- struct device *dev;
-
- if (WARN((type >= RFKILL_TYPE_MAX),
- KERN_WARNING
- "rfkill: illegal type %d passed as parameter "
- "to rfkill_allocate\n", type))
- return NULL;
-
- rfkill = kzalloc(sizeof(struct rfkill), GFP_KERNEL);
- if (!rfkill)
- return NULL;
-
- mutex_init(&rfkill->mutex);
- INIT_LIST_HEAD(&rfkill->node);
- rfkill->type = type;
-
- dev = &rfkill->dev;
- dev->class = &rfkill_class;
- dev->parent = parent;
- device_initialize(dev);
-
- __module_get(THIS_MODULE);
-
- return rfkill;
-}
-EXPORT_SYMBOL(rfkill_allocate);
-
-/**
- * rfkill_free - Mark rfkill structure for deletion
- * @rfkill: rfkill structure to be destroyed
- *
- * Decrements reference count of the rfkill structure so it is destroyed.
- * Note that rfkill_free() should _not_ be called after rfkill_unregister().
- */
-void rfkill_free(struct rfkill *rfkill)
-{
- if (rfkill)
- put_device(&rfkill->dev);
-}
-EXPORT_SYMBOL(rfkill_free);
-
-static void rfkill_led_trigger_register(struct rfkill *rfkill)
-{
-#ifdef CONFIG_RFKILL_LEDS
- int error;
-
- if (!rfkill->led_trigger.name)
- rfkill->led_trigger.name = dev_name(&rfkill->dev);
- if (!rfkill->led_trigger.activate)
- rfkill->led_trigger.activate = rfkill_led_trigger_activate;
- error = led_trigger_register(&rfkill->led_trigger);
- if (error)
- rfkill->led_trigger.name = NULL;
-#endif /* CONFIG_RFKILL_LEDS */
-}
-
-static void rfkill_led_trigger_unregister(struct rfkill *rfkill)
-{
-#ifdef CONFIG_RFKILL_LEDS
- if (rfkill->led_trigger.name) {
- led_trigger_unregister(&rfkill->led_trigger);
- rfkill->led_trigger.name = NULL;
- }
-#endif
-}
-
-/**
- * rfkill_register - Register a rfkill structure.
- * @rfkill: rfkill structure to be registered
- *
- * This function should be called by the network driver when the rfkill
- * structure needs to be registered. Immediately from registration the
- * switch driver should be able to service calls to toggle_radio.
- */
-int __must_check rfkill_register(struct rfkill *rfkill)
-{
- static atomic_t rfkill_no = ATOMIC_INIT(0);
- struct device *dev = &rfkill->dev;
- int error;
-
- if (WARN((!rfkill || !rfkill->toggle_radio ||
- rfkill->type >= RFKILL_TYPE_MAX ||
- rfkill->state >= RFKILL_STATE_MAX),
- KERN_WARNING
- "rfkill: attempt to register a "
- "badly initialized rfkill struct\n"))
- return -EINVAL;
-
- dev_set_name(dev, "rfkill%ld", (long)atomic_inc_return(&rfkill_no) - 1);
-
- rfkill_led_trigger_register(rfkill);
-
- error = rfkill_add_switch(rfkill);
- if (error) {
- rfkill_led_trigger_unregister(rfkill);
- return error;
- }
-
- error = device_add(dev);
- if (error) {
- rfkill_remove_switch(rfkill);
- rfkill_led_trigger_unregister(rfkill);
- return error;
- }
-
- return 0;
-}
-EXPORT_SYMBOL(rfkill_register);
-
-/**
- * rfkill_unregister - Unregister a rfkill structure.
- * @rfkill: rfkill structure to be unregistered
- *
- * This function should be called by the network driver during device
- * teardown to destroy rfkill structure. Note that rfkill_free() should
- * _not_ be called after rfkill_unregister().
- */
-void rfkill_unregister(struct rfkill *rfkill)
-{
- BUG_ON(!rfkill);
- device_del(&rfkill->dev);
- rfkill_remove_switch(rfkill);
- rfkill_led_trigger_unregister(rfkill);
- put_device(&rfkill->dev);
-}
-EXPORT_SYMBOL(rfkill_unregister);
-
-/**
- * rfkill_set_default - set initial value for a switch type
- * @type - the type of switch to set the default state of
- * @state - the new default state for that group of switches
- *
- * Sets the initial state rfkill should use for a given type.
- * The following initial states are allowed: RFKILL_STATE_SOFT_BLOCKED
- * and RFKILL_STATE_UNBLOCKED.
- *
- * This function is meant to be used by platform drivers for platforms
- * that can save switch state across power down/reboot.
- *
- * The default state for each switch type can be changed exactly once.
- * After a switch of that type is registered, the default state cannot
- * be changed anymore. This guards against multiple drivers it the
- * same platform trying to set the initial switch default state, which
- * is not allowed.
- *
- * Returns -EPERM if the state has already been set once or is in use,
- * so drivers likely want to either ignore or at most printk(KERN_NOTICE)
- * if this function returns -EPERM.
- *
- * Returns 0 if the new default state was set, or an error if it
- * could not be set.
- */
-int rfkill_set_default(enum rfkill_type type, enum rfkill_state state)
-{
- int error;
-
- if (WARN((type >= RFKILL_TYPE_MAX ||
- (state != RFKILL_STATE_SOFT_BLOCKED &&
- state != RFKILL_STATE_UNBLOCKED)),
- KERN_WARNING
- "rfkill: illegal state %d or type %d passed as "
- "parameter to rfkill_set_default\n", state, type))
- return -EINVAL;
-
- mutex_lock(&rfkill_global_mutex);
-
- if (!test_and_set_bit(type, rfkill_states_lockdflt)) {
- rfkill_global_states[type].default_state = state;
- rfkill_global_states[type].current_state = state;
- error = 0;
- } else
- error = -EPERM;
-
- mutex_unlock(&rfkill_global_mutex);
- return error;
-}
-EXPORT_SYMBOL_GPL(rfkill_set_default);
-
-/*
- * Rfkill module initialization/deinitialization.
- */
-static int __init rfkill_init(void)
-{
- int error;
- int i;
-
- /* RFKILL_STATE_HARD_BLOCKED is illegal here... */
- if (rfkill_default_state != RFKILL_STATE_SOFT_BLOCKED &&
- rfkill_default_state != RFKILL_STATE_UNBLOCKED)
- return -EINVAL;
-
- for (i = 0; i < RFKILL_TYPE_MAX; i++)
- rfkill_global_states[i].default_state = rfkill_default_state;
-
- error = class_register(&rfkill_class);
- if (error) {
- printk(KERN_ERR "rfkill: unable to register rfkill class\n");
- return error;
- }
-
- return 0;
-}
-
-static void __exit rfkill_exit(void)
-{
- class_unregister(&rfkill_class);
-}
-
-subsys_initcall(rfkill_init);
-module_exit(rfkill_exit);
--- /dev/null
+/*
+ * Copyright (C) 2007 Ivo van Doorn
+ * Copyright 2009 Johannes Berg <johannes@sipsolutions.net>
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published
+ * by the Free Software Foundation.
+ */
+
+#ifndef __RFKILL_INPUT_H
+#define __RFKILL_INPUT_H
+
+/* core code */
+void rfkill_switch_all(const enum rfkill_type type, bool blocked);
+void rfkill_epo(void);
+void rfkill_restore_states(void);
+void rfkill_remove_epo_lock(void);
+bool rfkill_is_epo_lock_active(void);
+bool rfkill_get_global_sw_state(const enum rfkill_type type);
+
+/* input handler */
+int rfkill_handler_init(void);
+void rfkill_handler_exit(void);
+
+#endif /* __RFKILL_INPUT_H */
#
# WiMAX LAN device configuration
#
-# Note the ugly 'depends on' on WIMAX: that disallows RFKILL to be a
-# module if WIMAX is to be linked in. The WiMAX code is done in such a
-# way that it doesn't require and explicit dependency on RFKILL in
-# case an embedded system wants to rip it out.
-#
-# As well, enablement of the RFKILL code means we need the INPUT layer
-# support to inject events coming from hw rfkill switches. That
-# dependency could be killed if input.h provided appropriate means to
-# work when input is disabled.
-
-comment "WiMAX Wireless Broadband support requires CONFIG_INPUT enabled"
- depends on INPUT = n && RFKILL != n
menuconfig WIMAX
tristate "WiMAX Wireless Broadband support"
- depends on (y && RFKILL != m) || m
- depends on (INPUT && RFKILL != n) || RFKILL = n
help
Select to configure support for devices that provide
* A non-polled generic rfkill device is embedded into the WiMAX
* subsystem's representation of a device.
*
- * FIXME: Need polled support? use a timer or add the implementation
- * to the stack.
+ * FIXME: Need polled support? Let drivers provide a poll routine
+ * and hand it to rfkill ops then?
*
* All device drivers have to do is after wimax_dev_init(), call
* wimax_report_rfkill_hw() and wimax_report_rfkill_sw() to update
* wimax_rfkill() Kernel calling wimax_rfkill()
* __wimax_rf_toggle_radio()
*
- * wimax_rfkill_toggle_radio() RF-Kill subsytem calling
+ * wimax_rfkill_set_radio_block() RF-Kill subsytem calling
* __wimax_rf_toggle_radio()
*
* __wimax_rf_toggle_radio()
#include <linux/wimax.h>
#include <linux/security.h>
#include <linux/rfkill.h>
-#include <linux/input.h>
#include "wimax-internal.h"
#define D_SUBMODULE op_rfkill
#include "debug-levels.h"
-#if defined(CONFIG_RFKILL) || defined(CONFIG_RFKILL_MODULE)
-
-
/**
* wimax_report_rfkill_hw - Reports changes in the hardware RF switch
*
int result;
struct device *dev = wimax_dev_to_dev(wimax_dev);
enum wimax_st wimax_state;
- enum rfkill_state rfkill_state;
d_fnstart(3, dev, "(wimax_dev %p state %u)\n", wimax_dev, state);
BUG_ON(state == WIMAX_RF_QUERY);
if (state != wimax_dev->rf_hw) {
wimax_dev->rf_hw = state;
- rfkill_state = state == WIMAX_RF_ON ?
- RFKILL_STATE_UNBLOCKED : RFKILL_STATE_SOFT_BLOCKED;
if (wimax_dev->rf_hw == WIMAX_RF_ON
&& wimax_dev->rf_sw == WIMAX_RF_ON)
wimax_state = WIMAX_ST_READY;
else
wimax_state = WIMAX_ST_RADIO_OFF;
+
+ rfkill_set_hw_state(wimax_dev->rfkill, state == WIMAX_RF_OFF);
+
__wimax_state_change(wimax_dev, wimax_state);
- input_report_key(wimax_dev->rfkill_input, KEY_WIMAX,
- rfkill_state);
}
error_not_ready:
mutex_unlock(&wimax_dev->mutex);
else
wimax_state = WIMAX_ST_RADIO_OFF;
__wimax_state_change(wimax_dev, wimax_state);
+ rfkill_set_sw_state(wimax_dev->rfkill, state == WIMAX_RF_OFF);
}
error_not_ready:
mutex_unlock(&wimax_dev->mutex);
*
* NOTE: This call will block until the operation is completed.
*/
-static
-int wimax_rfkill_toggle_radio(void *data, enum rfkill_state state)
+static int wimax_rfkill_set_radio_block(void *data, bool blocked)
{
int result;
struct wimax_dev *wimax_dev = data;
struct device *dev = wimax_dev_to_dev(wimax_dev);
enum wimax_rf_state rf_state;
- d_fnstart(3, dev, "(wimax_dev %p state %u)\n", wimax_dev, state);
- switch (state) {
- case RFKILL_STATE_SOFT_BLOCKED:
+ d_fnstart(3, dev, "(wimax_dev %p blocked %u)\n", wimax_dev, blocked);
+ rf_state = WIMAX_RF_ON;
+ if (blocked)
rf_state = WIMAX_RF_OFF;
- break;
- case RFKILL_STATE_UNBLOCKED:
- rf_state = WIMAX_RF_ON;
- break;
- default:
- BUG();
- }
mutex_lock(&wimax_dev->mutex);
if (wimax_dev->state <= __WIMAX_ST_QUIESCING)
- result = 0; /* just pretend it didn't happen */
+ result = 0;
else
result = __wimax_rf_toggle_radio(wimax_dev, rf_state);
mutex_unlock(&wimax_dev->mutex);
- d_fnend(3, dev, "(wimax_dev %p state %u) = %d\n",
- wimax_dev, state, result);
+ d_fnend(3, dev, "(wimax_dev %p blocked %u) = %d\n",
+ wimax_dev, blocked, result);
return result;
}
+static const struct rfkill_ops wimax_rfkill_ops = {
+ .set_block = wimax_rfkill_set_radio_block,
+};
/**
* wimax_rfkill - Set the software RF switch state for a WiMAX device
result = __wimax_rf_toggle_radio(wimax_dev, state);
if (result < 0)
goto error;
+ rfkill_set_sw_state(wimax_dev->rfkill, state == WIMAX_RF_OFF);
break;
case WIMAX_RF_QUERY:
break;
{
int result;
struct rfkill *rfkill;
- struct input_dev *input_dev;
struct device *dev = wimax_dev_to_dev(wimax_dev);
d_fnstart(3, dev, "(wimax_dev %p)\n", wimax_dev);
/* Initialize RF Kill */
result = -ENOMEM;
- rfkill = rfkill_allocate(dev, RFKILL_TYPE_WIMAX);
+ rfkill = rfkill_alloc(wimax_dev->name, dev, RFKILL_TYPE_WIMAX,
+ &wimax_rfkill_ops, wimax_dev);
if (rfkill == NULL)
goto error_rfkill_allocate;
+
+ d_printf(1, dev, "rfkill %p\n", rfkill);
+
wimax_dev->rfkill = rfkill;
- rfkill->name = wimax_dev->name;
- rfkill->state = RFKILL_STATE_UNBLOCKED;
- rfkill->data = wimax_dev;
- rfkill->toggle_radio = wimax_rfkill_toggle_radio;
-
- /* Initialize the input device for the hw key */
- input_dev = input_allocate_device();
- if (input_dev == NULL)
- goto error_input_allocate;
- wimax_dev->rfkill_input = input_dev;
- d_printf(1, dev, "rfkill %p input %p\n", rfkill, input_dev);
-
- input_dev->name = wimax_dev->name;
- /* FIXME: get a real device bus ID and stuff? do we care? */
- input_dev->id.bustype = BUS_HOST;
- input_dev->id.vendor = 0xffff;
- input_dev->evbit[0] = BIT(EV_KEY);
- set_bit(KEY_WIMAX, input_dev->keybit);
-
- /* Register both */
- result = input_register_device(wimax_dev->rfkill_input);
- if (result < 0)
- goto error_input_register;
result = rfkill_register(wimax_dev->rfkill);
if (result < 0)
goto error_rfkill_register;
d_fnend(3, dev, "(wimax_dev %p) = 0\n", wimax_dev);
return 0;
- /* if rfkill_register() suceeds, can't use rfkill_free() any
- * more, only rfkill_unregister() [it owns the refcount]; with
- * the input device we have the same issue--hence the if. */
error_rfkill_register:
- input_unregister_device(wimax_dev->rfkill_input);
- wimax_dev->rfkill_input = NULL;
-error_input_register:
- if (wimax_dev->rfkill_input)
- input_free_device(wimax_dev->rfkill_input);
-error_input_allocate:
- rfkill_free(wimax_dev->rfkill);
+ rfkill_destroy(wimax_dev->rfkill);
error_rfkill_allocate:
d_fnend(3, dev, "(wimax_dev %p) = %d\n", wimax_dev, result);
return result;
{
struct device *dev = wimax_dev_to_dev(wimax_dev);
d_fnstart(3, dev, "(wimax_dev %p)\n", wimax_dev);
- rfkill_unregister(wimax_dev->rfkill); /* frees */
- input_unregister_device(wimax_dev->rfkill_input);
+ rfkill_unregister(wimax_dev->rfkill);
+ rfkill_destroy(wimax_dev->rfkill);
d_fnend(3, dev, "(wimax_dev %p)\n", wimax_dev);
}
-#else /* #ifdef CONFIG_RFKILL */
-
-void wimax_report_rfkill_hw(struct wimax_dev *wimax_dev,
- enum wimax_rf_state state)
-{
-}
-EXPORT_SYMBOL_GPL(wimax_report_rfkill_hw);
-
-void wimax_report_rfkill_sw(struct wimax_dev *wimax_dev,
- enum wimax_rf_state state)
-{
-}
-EXPORT_SYMBOL_GPL(wimax_report_rfkill_sw);
-
-int wimax_rfkill(struct wimax_dev *wimax_dev,
- enum wimax_rf_state state)
-{
- return WIMAX_RF_ON << 1 | WIMAX_RF_ON;
-}
-EXPORT_SYMBOL_GPL(wimax_rfkill);
-
-int wimax_rfkill_add(struct wimax_dev *wimax_dev)
-{
- return 0;
-}
-
-void wimax_rfkill_rm(struct wimax_dev *wimax_dev)
-{
-}
-
-#endif /* #ifdef CONFIG_RFKILL */
-
-
/*
* Exporting to user space over generic netlink
*
projects / linux-flexiantxendom0-natty.git / commitdiff