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2012-09-19Input: Send events one packet at a timeHenrik Rydberg1-3/+21
On heavy event loads, such as a multitouch driver, the irqsoff latency can be as high as 250 us. By accumulating a frame worth of data before passing it on, the latency can be dramatically reduced. As a side effect, the special EV_SYN handling can be removed, since the frame is now atomic. This patch adds the events() handler callback and uses it if it exists. The latency is improved by 50 us even without the callback. Cc: Daniel Kurtz <djkurtz@chromium.org> Tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Tested-by: Ping Cheng <pingc@wacom.com> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
2012-09-19Input: Break out MT dataHenrik Rydberg1-9/+2
Move all MT-related things to a separate place. This saves some bytes for non-mt input devices, and prepares for new MT features. Reviewed-and-tested-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Tested-by: Ping Cheng <pingc@wacom.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
2012-07-07Pull input changes from Henrik Rydberg, including large update toDmitry Torokhov1-3/+5
atmel_mxt_ts driver by Daniel and MT protocol addition for win8 devices. Conflicts: drivers/input/touchscreen/atmel_mxt_ts.c
2012-07-05Input: MT - Include win8 supportHenrik Rydberg1-3/+5
The newly released HID protocol for win8 multitouch devices is capable of transmitting more information about each touch. In particular, it includes details useful for touch alignment. This patch completes the MT protocol with the ABS_MT_TOOL_X/Y events, and documents how to map win8 devices. Cc: Stephane Chatty <chatty@enac.fr> Cc: Benjamin Tissoires <benjamin.tissoires@enac.fr> Cc: Peter Hutterer <peter.hutterer@who-t.net> Acked-by: Chase Douglas <chase.douglas@canonical.com> Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
2012-06-11Input: fix input.h kernel-doc warningRandy Dunlap1-0/+1
Fix kernel-doc warning in input.h: Warning(include/linux/input.h:140): No description found for parameter 'len' Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2012-03-09Merge branch 'for-next' of github.com:rydberg/linux into nextDmitry Torokhov1-0/+25
2012-02-09Input: Add EVIOC mechanism for MT slotsHenrik Rydberg1-0/+25
This patch adds the ability to extract MT slot data via a new ioctl, EVIOCGMTSLOTS. The function returns an array of slot values for the specified ABS_MT event type. Example of user space usage: struct { unsigned code; int values[64]; } req; req.code = ABS_MT_POSITION_X; if (ioctl(fd, EVIOCGMTSLOTS(sizeof(req)), &req) < 0) return -1; for (i = 0; i < 64; i++) printf("slot %d: %d\n", i, req.values[i]); Reviewed-by: Chase Douglas <chase.douglas@canonical.com> Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
2012-02-03Input: add infrastructure for selecting clockid for event time stampsJohn Stultz1-0/+2
As noted by Arve and others, since wall time can jump backwards, it is difficult to use for input because one cannot determine if one event occurred before another or for how long a key was pressed. However, the timestamp field is part of the kernel ABI, and cannot be changed without possibly breaking existing users. This patch adds a new IOCTL that allows a clockid to be set in the evdev_client struct that will specify which time base to use for event timestamps (ie: CLOCK_MONOTONIC instead of CLOCK_REALTIME). For now we only support CLOCK_MONOTONIC and CLOCK_REALTIME, but in the future we could support other clockids if appropriate. The default remains CLOCK_REALTIME, so we don't change the ABI. Signed-off-by: John Stultz <john.stultz@linaro.org> Reviewed-by: Daniel Kurtz <djkurtz@google.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-10-28Merge branch 'for-linus' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (549 commits) ALSA: hda - Fix ADC input-amp handling for Cx20549 codec ALSA: hda - Keep EAPD turned on for old Conexant chips ALSA: hda/realtek - Fix missing volume controls with ALC260 ASoC: wm8940: Properly set codec->dapm.bias_level ALSA: hda - Fix pin-config for ASUS W90V ALSA: hda - Fix surround/CLFE headphone and speaker pins order ALSA: hda - Fix typo ALSA: Update the sound git tree URL ALSA: HDA: Add new revision for ALC662 ASoC: max98095: Convert codec->hw_write to snd_soc_write ASoC: keep pointer to resource so it can be freed ASoC: sgtl5000: Fix wrong mask in some snd_soc_update_bits calls ASoC: wm8996: Fix wrong mask for setting WM8996_AIF_CLOCKING_2 ASoC: da7210: Add support for line out and DAC ASoC: da7210: Add support for DAPM ALSA: hda/realtek - Fix DAC assignments of multiple speakers ASoC: Use SGTL5000_LINREG_VDDD_MASK instead of hardcoded mask value ASoC: Set sgtl5000->ldo in ldo_regulator_register ASoC: wm8996: Use SND_SOC_DAPM_AIF_OUT for AIF2 Capture ASoC: wm8994: Use SND_SOC_DAPM_AIF_OUT for AIF3 Capture ...
2011-10-12Input: force feedback - potential integer wrap in input_ff_create()Dan Carpenter1-1/+1
The problem here is that max_effects can wrap on 32 bits systems. We'd allocate a smaller amount of data than sizeof(struct ff_device). The call to kcalloc() on the next line would fail but it would write the NULL return outside of the memory we just allocated causing data corruption. The call path is that uinput_setup_device() get ->ff_effects_max from the user and sets the value in the ->private_data struct. From there it is: -> uinput_ioctl_handler() -> uinput_create_device() -> input_ff_create(dev, udev->ff_effects_max); I've also changed ff_effects_max so it's an unsigned int instead of a signed int as a cleanup. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-10-05ALSA: jack - Add "Line In" input jack constantsDavid Henningsson1-0/+1
Similar to Line Out, these constants form the base for future patches enabling input jack reporting for Line in jacks. Signed-off-by: David Henningsson <david.henningsson@canonical.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2011-09-07Merge commit 'v3.1-rc4' into nextDmitry Torokhov1-0/+2
2011-08-23Input: add BTN_TOOL_QUINTTAP for reporting 5 fingers on touchpadDaniel Kurtz1-0/+1
"4-finger scroll" is a gesture supported by some applications and operating systems. "Resting thumb" is when a clickpad user rests a finger (e.g., a thumb), in a "click zone" (typically the bottom of the touchpad) in anticipation of click+move=select gestures. Thus, "4-finger scroll + resting thumb" is a 5-finger gesture. To allow userspace to detect this gesture, we send BTN_TOOL_QUINTTAP. Signed-off-by: Daniel Kurtz <djkurtz@chromium.org> Acked-by: Chase Douglas <chase.douglas@canonical.com> Acked-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-08-05Add KEY_MICMUTE and enable it on Lenovo X220Andy Lutomirski1-0/+2
I suspect that this works on T410. Signed-off-by: Andy Lutomirski <luto@mit.edu> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-07-04Input: add guarding parentheses to macrosSimon Budig1-3/+3
Put parentheses around macro argument uses. This avoids pitfalls for the programmer, where the argument expansion does not give the expected result, for example: ioctl (fd, EVIOCGABS (have_mt ? ABS_MT_POSITION_X : ABS_X), &abs); Signed-off-by: Simon Budig <simon.budig@kernelconcepts.de> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-04-18Merge branch 'for-linus' of ↵Linus Torvalds1-4/+6
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: xen-kbdfront - fix mouse getting stuck after save/restore Input: estimate number of events per packet Input: evdev - indicate buffer overrun with SYN_DROPPED Input: document event types and codes and their intended use Input: add KEY_IMAGES specifically for AL Image Browser Input: twl4030_keypad - fix potential NULL dereference in twl4030_kp_probe() Input: h3600_ts - fix error handling at connect Input: twl4030_keypad - avoid potential NULL-pointer dereference
2011-04-12Input: evdev - indicate buffer overrun with SYN_DROPPEDJeff Brown1-0/+1
Add a new EV_SYN code, SYN_DROPPED, to inform the client when input events have been dropped from the evdev input buffer due to a buffer overrun. The client should use this event as a hint to reset its state or ignore all following events until the next packet begins. Signed-off-by: Jeff Brown <jeffbrown@android.com> [dtor@mail.ru: Implement Henrik's suggestion and drop old events in case of overflow.] Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-04-12Input: add KEY_IMAGES specifically for AL Image BrowserJarod Wilson1-4/+5
Many media center remotes have buttons intended for jumping straight to one type of media browser or another -- commonly, images/photos/pictures, audio/music, television, and movies. At present, remotes with an images or photos or pictures button use any number of different keycodes which sort of maybe fit. I've seen at least KEY_MEDIA, KEY_CAMERA, KEY_GRAPHICSEDITOR and KEY_PRESENTATION. None of those seem quite right. In my mind, KEY_MEDIA should be something more like a media center application launcher (and I'd like to standardize on that for things like the windows media center button on the mce remotes). KEY_CAMERA is used in a lot of webcams, and typically means "take a picture now". KEY_GRAPHICSEDITOR implies an editor, not a browser. KEY_PRESENTATION might be the closest fit here, if you think "photo slide show", but it may well be more intended for "run application in full-screen presentation mode" or to launch something like magicpoint, I dunno. And thus, I'd like to have a KEY_IMAGES, which matches the HID Usage AL Image Browser, the meaning of which I think is crystal-clear. I believe AL Audio Browser is already covered by KEY_AUDIO, and AL Movie Browser by KEY_VIDEO, so I'm also adding appropriate comments next to those keys. Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-03-28eeepc-wmi: add camera keysCorentin Chary1-0/+7
These keys are supposed to be handled by any software using the camera (like webKam or cheese...). They can also be used to actually move the camera when possible. Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-01-31Input: switch completely over to the new versions of get/setkeycodeDmitry Torokhov1-9/+3
All users of old style get/setkeycode methids have been converted so it is time to retire them. Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-01-13Merge branch 'for-linus' of ↵Linus Torvalds1-0/+1
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: add SW_ROTATE_LOCK switch type Input: fix force feedback capability query example Input: wacom_w8001 - add single-touch support Input: add Austria Microsystem AS5011 joystick driver Input: remove aaed2000 keyboard driver Input: i8042 - introduce 'notimeout' blacklist for Dell Vostro V13 Input: cy8ctmg110_ts - Convert to dev_pm_ops Input: migor_ts - convert to dev_pm_ops Input: mcs5000_ts - convert to dev_pm_ops Input: eeti_ts - convert to dev_pm_ops Input: ad7879 - convert I2C to dev_pm_ops
2011-01-11Merge branch 'next' into for-linusDmitry Torokhov1-0/+1
2011-01-11Input: add SW_ROTATE_LOCK switch typeJekyll Lai1-0/+1
This switch is used to signal that user want to disable screen transitions from portrait to landscape mode and back. Signed-off-by: Jekyll Lai <jekyll_lai@wistron.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-01-07Merge branch 'for-linus' of ↵Linus Torvalds1-17/+21
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (58 commits) Input: wacom_w8001 - support pen or touch only devices Input: wacom_w8001 - use __set_bit to set keybits Input: bu21013_ts - fix misuse of logical operation in place of bitop Input: i8042 - add Acer Aspire 5100 to the Dritek list Input: wacom - add support for digitizer in Lenovo W700 Input: psmouse - disable the synaptics extension on OLPC machines Input: psmouse - fix up Synaptics comment Input: synaptics - ignore bogus mt packet Input: synaptics - add multi-finger and semi-mt support Input: synaptics - report clickpad property input: mt: Document interface updates Input: fix double equality sign in uevent Input: introduce device properties hid: egalax: Add support for Wetab (726b) Input: include MT library as source for kerneldoc MAINTAINERS: Update input-mt entry hid: egalax: Add support for Samsung NB30 netbook hid: egalax: Document the new devices in Kconfig hid: egalax: Add support for Wetab hid: egalax: Convert to MT slots ... Fixed up trivial conflict in drivers/input/keyboard/Kconfig
2011-01-06Merge branch 'next' into for-linusDmitry Torokhov1-17/+21
Conflicts: include/linux/input.h
2010-12-29[media] Fix rc-tbs-nec table after converting the cx88 driver to ir-coreMariusz Białończyk1-0/+2
The patch fixes the rc-tbs-nec table after converting drivers/media/video/cx88 to ir-core (commit ba7e90c9f878e0ac3c0614a5446fe5c62ccc33ec). It is also adds two missing buttons (10- and 10+) with its definition (KEY_10CHANNELSUP and KEY_10CHANNELSDOWN). [mchehab@redhat.com: move keycode numbers to 0x1b8/0x1b9 as requested by the input Maintainer] Signed-off-by: Mariusz Białończyk <manio@skyboo.net> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2010-12-27Merge branch 'next' of ↵Dmitry Torokhov1-0/+16
git://git.kernel.org/pub/scm/linux/kernel/git/rydberg/input-mt into next
2010-12-20Input: introduce device propertiesHenrik Rydberg1-0/+16
Today, userspace sets up an input device based on the data it emits. This is not always enough; a tablet and a touchscreen may emit exactly the same data, for instance, but the former should be set up with a pointer whereas the latter does not need to. Recently, a new type of touchpad has emerged where the buttons are under the pad, which changes logic without changing the emitted data. This patch introduces a new ioctl, EVIOCGPROP, which enables user access to a set of device properties useful during setup. The properties are given as a bitmap in the same fashion as the event types, and are also made available via sysfs, uevent and /proc/bus/input/devices. Acked-by: Ping Cheng <pingc@wacom.com> Acked-by: Chase Douglas <chase.douglas@canonical.com> Acked-by: Dmitry Torokhov <dtor@mail.ru> Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
2010-12-16Merge branch 'next' of ↵Dmitry Torokhov1-17/+5
git://git.kernel.org/pub/scm/linux/kernel/git/rydberg/input-mt into next Conflicts: drivers/input/Makefile
2010-12-16input: mt: Add hovering distance axisHenrik Rydberg1-1/+2
Touch devices capable of hovering, i.e., fingers detected a distance from the surface, are not supported by the current input MT protocol. This patch adds ABS_MT_DISTANCE, which may be used to indicate the distance between the contact and the surface. Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
2010-12-16input: mt: Move tracking and pointer emulation to input-mtHenrik Rydberg1-0/+3
The drivers using the type B protocol all report tracking information the same way. The contact id is semantically equivalent to ABS_MT_SLOT, and the handling of ABS_MT_TRACKING_ID only complicates the driver. The situation can be improved upon by providing a common pointer emulation code, thereby removing the need for the tracking id in the driver. This patch moves all tracking event handling over to the input core, simplifying both the existing drivers and the ones currently in preparation. Acked-by: Ping Cheng <pingc@wacom.com> Acked-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
2010-12-16input: mt: Break out slots handlingHenrik Rydberg1-16/+0
In preparation for common code to handle a larger set of MT slots devices, move the slots handling over to a separate file. Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
2010-12-14Input: define separate EVIOCGKEYCODE_V2/EVIOCSKEYCODE_V2Dmitry Torokhov1-2/+4
The desire to keep old names for the EVIOCGKEYCODE/EVIOCSKEYCODE while extending them to support large scancodes was a mistake. While we tried to keep ABI intact (and we succeeded in doing that, programs compiled on older kernels will work on newer ones) there is still a problem with recompiling existing software with newer kernel headers. New kernel headers will supply updated ioctl numbers and kernel will expect that userspace will use struct input_keymap_entry to set and retrieve keymap data. But since the names of ioctls are still the same userspace will happily compile even if not adjusted to make use of the new structure and will start miraculously fail in the field. To avoid this issue let's revert EVIOCGKEYCODE/EVIOCSKEYCODE definitions and add EVIOCGKEYCODE_V2/EVIOCSKEYCODE_V2 so that userspace can explicitly select the style of ioctls it wants to employ. Reviewed-by: Henrik Rydberg <rydberg@euromail.se> Acked-by: Jarod Wilson <jarod@redhat.com> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-11-30Input: document struct input_absinfoDmitry Torokhov1-1/+20
Add documentation for struct input_absinfo that is used in EVIOCGABS and EVIOCSABS ioctl and specify units of measure used for reporting resolution for an axis. Acked-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-11-30Input: add keycodes for touchpad on/off keysBastien Nocera1-0/+4
Some laptops will have a "touchpad toggle" soft button, which expects user-space to turn off the touchpad themselves, some other devices will do this in hardware, but send key events telling us that the touchpad has been turned off/on. KEY_TOUCHPAD_ON/KEY_TOUCHPAD_OFF will be used by user-space to show a popup with the status of the touchpad. Signed-off-by: Bastien Nocera <hadess@hadess.net> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-11-03Input: export input_reset_device() for use in KGDBDmitry Torokhov1-1/+3
KGDB, much like the resume process, needs to be able to mark all keys that were pressed at the time we dropped into the debuggers as "released", since it is unlikely that the keys stay pressed for the entire duration of the debug session. Also we need to make sure that input_reset_device() and input_dev_suspend() only attempt to change state of currenlt opened devices since closed devices may not be ready to accept IO requests. Tested-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-10-25Merge branch 'for-linus' of ↵Linus Torvalds1-12/+45
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (75 commits) Input: wacom - specify Cinitq supported tools Input: ab8500-ponkey - fix IRQ freeing in error path Input: adp5588-keys - use more obvious i2c_device_id name string Input: ad7877 - switch to using threaded IRQ Input: ad7877 - use attribute group to control visibility of attributes Input: serio - add support for PS2Mult multiplexer protocol Input: wacom - properly enable runtime PM Input: ad7877 - filter events where pressure is beyond the maximum Input: ad7877 - implement EV_KEY:BTN_TOUCH reporting Input: ad7877 - implement specified chip select behavior Input: hp680_ts_input - use cancel_delayed_work_sync() Input: mousedev - correct lockdep annotation Input: ads7846 - switch to using threaded IRQ Input: serio - support multiple child devices per single parent Input: synaptics - simplify pass-through port handling Input: add ROHM BU21013 touch panel controller support Input: omap4-keypad - wake-up on events & long presses Input: omap4-keypad - fix interrupt line configuration Input: omap4-keypad - SYSCONFIG register configuration Input: omap4-keypad - use platform device helpers ...
2010-09-09Input: add support for large scancodesMauro Carvalho Chehab1-11/+44
Several devices use a high number of bits for scancodes. One important group is the Remote Controllers. Some new protocols like RC-6 define a scancode space of 64 bits. The current EVIO[CS]GKEYCODE ioctls allow replace the scancode/keycode translation tables, but it is limited to up to 32 bits for scancode. Also, if userspace wants to clean the existing table, replacing it by a new one, it needs to run a loop calling the ioctls over the entire sparse scancode space. To solve those problems, this patch extends the ioctls to allow drivers handle scancodes up to 32 bytes long (the length could be extended in the future should such need arise) and allow userspace to query and set scancode to keycode mappings not only by scancode but also by index. Compatibility code were also added to handle the old format of EVIO[CS]GKEYCODE ioctls. Folded fixes by: - Dan Carpenter: locking fixes for the original implementation - Jarod Wilson: fix crash when setting keycode and wiring up get/set handlers in original implementation. - Dmitry Torokhov: rework to consolidate old and new scancode handling, provide options to act either by index or scancode. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Jarod Wilson <jarod@redhat.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-09-05Input: fix a few typosDmitry Torokhov1-1/+1
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-08-19input: __rcu annotationsArnd Bergmann1-1/+1
Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Dmitry Torokhov <dtor@mail.ru> Reviewed-by: Josh Triplett <josh@joshtriplett.org>
2010-08-02Input: dynamically allocate ABS informationDaniel Mack1-39/+18
As all callers are now changed to only use the input_abs_*() access helpers, switching over to dynamically allocated ABS information is easy. This reduces size of struct input_dev from 3152 to 1640 on 64 bit architectures. Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-08-02Input: add static inline accessors for ABS propertiesDaniel Mack1-0/+30
In preparation for dynamically allocated ABS axis, introduce a number of static inline access helpers. This should make the transition less painful. Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-07-15Input: change input handlers to use bool when possibleDmitry Torokhov1-3/+3
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-07-15Input: introduce MT event slotsHenrik Rydberg1-0/+33
With the rapidly increasing number of intelligent multi-contact and multi-user devices, the need to send digested, filtered information from a set of different sources within the same device is imminent. This patch adds the concept of slots to the MT protocol. The slots enumerate a set of identified sources, such that all MT events can be passed independently and selectively per identified source. The protocol works like this: Instead of sending a SYN_MT_REPORT event immediately after the contact data, one sends an ABS_MT_SLOT event immediately before the contact data. The input core will only emit events for slots with modified MT events. It is assumed that the same slot is used for the duration of an initiated contact. Acked-by: Ping Cheng <pingc@wacom.com> Acked-by: Chase Douglas <chase.douglas@canonical.com> Acked-by: Rafi Rubin <rafi@seas.upenn.edu> Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-06-23Input: evdev - use driver hint to compute size of event bufferHenrik Rydberg1-0/+21
Some devices, in particular MT devices, produce a lot of data. This may lead to overflowing of the event queues in evdev driver, which by default are fairly small. Let the drivers hint the average number of events per packet generated by the device, and use that information when computing the buffer size evdev should use for the device. Signed-off-by: Henrik Rydberg <rydberg@euromail.se> Acked-by: Chase Douglas <chase.douglas@canonical.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-05-20Input: use ABS_CNT rather than (ABS_MAX + 1)Daniel Mack1-6/+6
Signed-off-by: Daniel Mack <daniel@caiaq.de> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-04-13Input: add Analog Devices AD714x captouch input driverBryan Wu1-0/+1
AD7142 and AD7147 are integrated capacitance-to-digital converters (CDCs) with on-chip environmental calibration for use in systems requiring a novel user input method. The AD7142 and AD7147 can interface to external capacitance sensors implementing functions such as buttons, scrollwheels, sliders, touchpads and so on. The chips don't restrict the specific usage. Depending on the hardware connection, one special target board can include one or several these components. The platform_data for the device's "struct device" holds these information. The data-struct defined in head file descript the hardware feature of button/scrollwheel/slider/touchpad components on target boards, which need be filled in the arch/mach-/. As the result, the driver is independent of boards. It gets the components layout from the platform_data, registers related devices, fullfills the algorithms and state machines for these components and report related input events to up level. Signed-off-by: Bryan Wu <cooloney@kernel.org> Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Barry Song <21cnbao@gmail.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-03-08Input: scancode in get/set_keycodes should be unsignedDmitry Torokhov1-8/+12
The HID layer has some scan codes of the form 0xffbc0000 for logitech devices which do not work if scancode is typed as signed int, so we need to switch to unsigned it instead. While at it keycode being signed does not make much sense either. Acked-by: Márton Németh <nm127@freemail.hu> Acked-by: Matthew Garrett <mjg@redhat.com> Acked-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-03-01Merge branch 'for-linus' of ↵Linus Torvalds1-4/+13
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (62 commits) Input: atkbd - release previously reserved keycodes 248 - 254 Input: add KEY_WPS_BUTTON definition Input: ads7846 - add regulator support Input: winbond-cir - fix suspend/resume Input: gamecon - use pr_err() and friends Input: gamecon - constify some of the setup structures Input: gamecon - simplify pad type handling Input: gamecon - simplify coordinate calculation for PSX Input: gamecon - fix some formatting issues Input: gamecon - add rumble support for N64 pads Input: wacom - add device type to device name string Input: s3c24xx_ts - report touch only when stylus is down Input: s3c24xx_ts - re-enable IRQ on resume Input: wacom - constify product features data Input: wacom - use per-device instance of wacom_features Input: sh_keysc - enable building on SH-Mobile ARM Input: wacom - get features from driver info Input: rotary-encoder - set gpio direction for each requested gpio Input: sh_keysc - update the driver with mode 6 Input: sh_keysc - switch to using bitmaps ...
2010-02-28Merge branch 'next' into for-linusDmitry Torokhov1-4/+13
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