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2015-01-22Input: i8042 - add noloop quirk for Medion Akoya E7225 (MD98857)Jochen Hein
Without this the aux port does not get detected, and consequently the touchpad will not work. With this patch the touchpad is detected: $ dmesg | grep -E "(SYN|i8042|serio)" pnp 00:03: Plug and Play ACPI device, IDs SYN1d22 PNP0f13 (active) i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12 serio: i8042 KBD port at 0x60,0x64 irq 1 serio: i8042 AUX port at 0x60,0x64 irq 12 input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input4 psmouse serio1: synaptics: Touchpad model: 1, fw: 8.1, id: 0x1e2b1, caps: 0xd00123/0x840300/0x126800, board id: 2863, fw id: 1473085 input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input6 dmidecode excerpt for this laptop is: Handle 0x0001, DMI type 1, 27 bytes System Information Manufacturer: Medion Product Name: Akoya E7225 Version: 1.0 Cc: stable@vger.kernel.org Signed-off-by: Jochen Hein <jochen@jochen.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-01-19Input: synaptics - adjust min/max for Lenovo ThinkPad X1 Carbon 2ndPeter Hutterer
LEN0037 found in the Lenovo ThinkPad X1 Carbon 2nd (2014 model) Cc: stable@vger.kernel.org Reported-and-tested-by: Bjoern Olausson <bjoern@olausson.de> Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-01-11Input: uinput - fix ioctl nr overflow for UI_GET_SYSNAME/VERSIONGabriel Laskar
Request number for ioctls are encoded as 8bit numbers, but unfortunately UI_GET_SYSNAME and UI_GET_VERSION specifu values larger than that, so they get truncated to 44 (0x2c) and 45 (0x2d). This change makes requested values match their effective values (the ABI stays intact). Signed-off-by: Gabriel Laskar <gabriel@lse.epita.fr> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-01-08Input: I8042 - add Acer Aspire 7738 to the nomux listDmitry Torokhov
When KBC is in active multiplexing mode the touchpad on this laptop does not work. Reported-by: Bilal Koc <koc.bilo@googlemail.com> Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-01-08Input: elantech - support new ICs types for version 4Sam hung
This change allows the driver to recognize newer Elantech touchpads. Cc: stable@vger.kernel.org Signed-off-by: Yi ju Hong <sam.hung@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-01-07Input: i8042 - reset keyboard to fix Elantech touchpad detectionSrihari Vijayaraghavan
On some laptops, keyboard needs to be reset in order to successfully detect touchpad (e.g., some Gigabyte laptop models with Elantech touchpads). Without resettin keyboard touchpad pretends to be completely dead. Based on the original patch by Mateusz Jończyk this version has been expanded to include DMI based detection & application of the fix automatically on the affected models of laptops. This has been confirmed to fix problem by three users already on three different models of laptops. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=81331 Cc: stable@vger.kernel.org Signed-off-by: Srihari Vijayaraghavan <linux.bug.reporting@gmail.com> Acked-by: Mateusz Jończyk <mat.jonczyk@o2.pl> Tested-by: Srihari Vijayaraghavan <linux.bug.reporting@gmail.com> Tested by: Zakariya Dehlawi <zdehlawi@gmail.com> Tested-by: Guillaum Bouchard <guillaum.bouchard@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-01-07MAINTAINERS: remove Dmitry Torokhov's alternate addressDmitry Torokhov
I am using gmail.com exclusively and mail.ru was a backup that so far was not needed. To avoid getting 2 copies of the same message let's drop mail.ru from MAINTAINERS file. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-27Input: hil_kbd - fix incorrect use of init_completionNicholas Mc Guire
The successive init_completion calls should be reinit_completion calls. Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at> Acked-by: Helge Deller <deller@gmx.de> Tested-by: Helge Deller <deller@gmx.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-18Merge branch 'next' into for-linusDmitry Torokhov
Second round of input updates for 3.19.
2014-12-18Input: alps - v7: document the v7 touchpad packet protocolHans de Goede
Add a table documenting where all the bits are in the v7 touchpad packets. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-18Input: alps - v7: fix finger counting for > 2 fingers on clickpadsHans de Goede
Protocol v7 uses the middle / right button bits on clickpads to communicate "location" information of a 3th touch (and possible 4th) touch on clickpads. Specifically when 3 touches are down, if one of the 3 touches is in the left / right button area, this will get reported in the middle / right button bits and the touchpad will still send a TWO type packet rather then a MULTI type packet, so when this happens we must add the finger reported in the button area to the finger count. Likewise we must also add fingers reported this way to the finger count when we get MULTI packets. BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=86338 Cc: stable@vger.kernel.org # 3.17 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-18Input: alps - v7: sometimes a single touch is reported in mt[1]Hans de Goede
The v7 proto differentiates between a primary touch (with high precision) and a secondary touch (with lower precision). Normally when 2 fingers are down and one is lifted the still present touch becomes the primary touch, but some traces have shown that this does not happen always. This commit deals with this by making alps_get_mt_count() not stop at the first empty mt slot, and if a touch is present in mt[1] and not mt[0] moving the data to mt[0] (for input_mt_assign_slots). BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=86338 Cc: stable@vger.kernel.org # 3.17 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-18Input: alps - v7: ignore new packetsHans de Goede
NEW packets are send to indicate a discontinuity in the finger coordinate reporting. Specifically a finger may have moved from slot 0 to 1 or vice versa. INPUT_MT_TRACK takes care of this for us. NEW packets have 3 problems: 1) They do not contain middle / right button info (on non clickpads) this can be worked around by preserving the old button state 2) They do not contain an accurate fingercount, and they are typically send when the number of fingers changes. We cannot use the old finger count as that may mismatch with the amount of touch coordinates we've available in the NEW packet 3) Their x data for the second touch is inaccurate leading to a possible jump of the x coordinate by 16 units when the first non NEW packet comes in Since problems 2 & 3 cannot be worked around, just ignore them. BugLink: https://bugs.freedesktop.org/show_bug.cgi?id=86338 Cc: stable@vger.kernel.org # 3.17 Signed-off-by: Hans de Goede <hdegoede@redhat.com> Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-17Input: evdev - add CLOCK_BOOTTIME supportAniroop Mathur
This patch adds support for CLOCK_BOOTTIME for input event timestamp. CLOCK_BOOTTIME includes suspend time, so it would allow aplications to get correct time difference between two events even when system resumes from suspend state. Signed-off-by: Aniroop Mathur <a.mathur@samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-17Input: psmouse - expose drift duration for IBM trackpointshaarp
IBM Trackpoints have a feature to compensate for drift by recalibrating themselves periodically. By default, if for 0.5 seconds there is no change in position, it's used as the new zero. This duration is too low. Often, the calibration happens when the trackpoint is in fact being used. IBM's Trackpoint Engineering Specifications show a configuration register that allows changing this duration, rstdft1. Expose it via sysfs among the other settings. Signed-off-by: Mike Murdoch <main.haarp@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-15Input: stmpe - bias keypad columns properlyLinus Walleij
All keypad column pins used as inputs should be pulled up on the STMPE24xx, but this is not done by the current driver. Add some logic that will do this properly. The STMPE1601 also has a keypad controller, but explicitly does *NOT* require you to set up any pull-ups. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-15Input: stmpe - enforce device tree only modeLinus Walleij
The STMPE keypad controller is only used with device tree configured systems, so force the configuration to come from device tree only, and now actually get the rows and cols from the device tree too. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-15mfd: stmpe: add pull up/down register offsets for STMPELinus Walleij
This adds the register offsets for pull up/down for the STMPE 1601, 1801 and 24xx expanders. This is used to bias GPIO lines and keypad lines. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-15Input: optimize events_per_packet count calculationAnshul Garg
This patch avoids unnecessary operations while estimating events per packet for an input device when event type is not set. Signed-off-by: Anshul Garg <anshul.g@samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-15Input: edt-ft5x06 - fixed a macro coding style issueAsaf Vertz
Fixed a coding style error, macros with complex values should be enclosed in parentheses. Signed-off-by: Asaf Vertz <asaf.vertz@tandemg.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-15Input: gpio_keys - replace timer and workqueue with delayed workqueueDmitry Torokhov
We do not need to roll our own implementation of delayed work now that we have proper implementation of mod_delayed_work. For interrupt-only driven buttons we retain the timer, but we rename it to release_timer to better reflect its purpose. Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-15Input: gpio_keys - allow separating gpio and irq in device treeDmitry Torokhov
This change allows specify interrupt for buttons separately form gpio, potentially allowing to form several "clusters" of buttons on different interrupts. Button defined without both gpio and irq in device tree is a hared error instead of a warning now. Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-15Merge branch 'next' into for-linusDmitry Torokhov
Prepare input updates for 3.19.
2014-12-14Input: gpio_keys - fix warning regarding uninitialized 'button' variableFabio Estevam
Commit af906faabcf91eb1 ("Input: gpio_keys - fix warning regarding uninitialized 'irq' variable") introduced the following build warning: drivers/input/keyboard/gpio_keys.c:625:16: warning: 'button' may be used uninitialized in this function [-Wmaybe-uninitialized] Move the 'button' initialization to a proper location to avoid such warning. Reported-by: Olof's autobuilder <build@lixom.net> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-07Input: add support for Elan eKTH I2C touchscreensScott Liu
This driver supports Elan eKTH I2C touchscreen controllers. Note that these are using custom protocol, as opposed to other Elan parts that use HID-over-I2C and are supported by the standard HID-multitouch driver. Signed-off-by: Scott Liu <scott.liu@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-07Input: gpio_keys - fix warning regarding uninitialized 'irq' variableDmitry Torokhov
Commit f2d347ff70be453e ("Input: gpio_keys - add device tree support for interrupt only keys") caused the following build warning: drivers/input/keyboard/gpio_keys.c: In function 'gpio_keys_probe': drivers/input/keyboard/gpio_keys.c:647:15: warning: 'irq' may be used uninitialized in this function [-Wmaybe-uninitialized] drivers/input/keyboard/gpio_keys.c:622:7: note: 'irq' was declared here Move button->irq initialization into proper branch and get rid of the temporary. Reported-by: Olof's autobuilder <build@lixom.net> Reported-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-04Input: cyapa - use 'error' for error codesDudley Du
Let's use 'error' variable instead of 'ret' when we need to store erro codes. Signed-off-by: Dudley Du <dudley.dulixin@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-03Input: cyapa - fix resuming the deviceDudley Du
Chage b1cfa7b4388285c0f0b486f152ab0cb18612c779 tried to get away form using irq in cyapa structure and use client->irq instead, but missed a couple of spots making the touchpad inoperative after resume. Reported-by: Jeremiah Mahler <jmmahler@gmail.com> Signed-off-by: Dudley Du <dudley.dulixin@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-03Input: gpio_keys - add device tree support for interrupt only keysAlexander Stein
This features already exists for board config setups. Add support for device tree based systems. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-03Input: amikbd - allocate temporary keymap buffer on the stackGeert Uytterhoeven
Allocate the temporary buffer needed for initialization of the console keyboard maps (512 bytes, as NR_KEYS = 256) on the stack instead of statically, to reduce kernel size. add/remove: 0/1 grow/shrink: 0/0 up/down: 0/-512 (-512) function old new delta temp_map 512 - -512 Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-03Input: amikbd - fix build if !CONFIG_HW_CONSOLEGeert Uytterhoeven
If CONFIG_HW_CONSOLE is not set: drivers/built-in.o: In function `amikbd_probe': amikbd.c:(.init.text+0x3e4e): undefined reference to `key_maps' amikbd.c:(.init.text+0x3dd4): undefined reference to `key_maps' To fix this, extract the initialization of the console keyboard maps into amikbd_init_console_keymaps(), protected by #ifdef CONFIG_HW_CONSOLE. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-03Input: lm8323 - missing error check in lm8323_set_disable()Dan Carpenter
The missing error handling here is not especially harmful but static checkers complain that "i" can be used uninitialized. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-03Input: initialize device counter variables with -1Aniroop Mathur
Let's initialize atomic_t variables keeping track of number of various devices created so far with -1 in order to avoid extra subtraction operation. Signed-off-by: Aniroop Mathur <aniroop.mathur@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-02Input: initialize input_no to -1 to avoid subtractionAniroop Mathur
Let's initializes input_no to -1 in order to avoid extra subtraction operation performed every time we allocate an input device. Signed-off-by: Aniroop Mathur <aniroop.mathur@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-12-02Input: i8042 - do not try to load on Intel NUC D54250WYKTodor Minchev
The Intel NUC D54250WYK has no PS/2 controller, however the DSDT declares PS/2 devices which trigger the loading of the i8042 driver. Signed-off-by: Todor Minchev <todor.minchev@intel.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-25Input: xpad - use proper endpoint typeGreg Kroah-Hartman
The xpad wireless endpoint is not a bulk endpoint on my devices, but rather an interrupt one, so the USB core complains when it is submitted. I'm guessing that the author really did mean that this should be an interrupt urb, but as there are a zillion different xpad devices out there, let's cover out bases and handle both bulk and interrupt endpoints just as easily. Signed-off-by: "Pierre-Loup A. Griffais" <pgriffais@valvesoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: stable <stable@vger.kernel.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-25Input: elantech - trust firmware about trackpoint presenceDmitry Torokhov
Only try to parse data as coming from trackpoint if firmware told us that trackpoint is present. Fixes commit caeb0d37fa3e387eb0dd22e5d497523c002033d1 Reported-and-tested-by: Marcus Overhagen <marcus.overhagen@gmail.com> Reported-and-tested-by: Anders Kaseorg <andersk@mit.edu> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-16Input: atkbd - correct MSC_SCAN events for force_release keysStefan Brüns
Without the change either no scancode would be reported on release of force_release keys, or - if the key is marked as force_release erroneously - the release event and the scancode would be reported in separate reports to the input layer. Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-16Input: synaptics - adjust min/max on Thinkpad E540Ben Sagal
The LEN2006 Synaptics touchpad (as found in Thinkpad E540) returns wrong min max values. touchpad-edge-detector output: > Touchpad SynPS/2 Synaptics TouchPad on /dev/input/event6 > Move one finger around the touchpad to detect the actual edges > Kernel says: x [1472..5674], y [1408..4684] > Touchpad sends: x [1264..5675], y [1171..4688] Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=88211 Cc: stable@vger.kernel.org Signed-off-by: Binyamin Sagal <bensagal@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-13Input: elantech - update the documentationUlrik De Bie
A chapter is added to describe the trackpoint packets. A section is added to describe the behaviour of the knob crc_enabled in sysfs. The introduction of the documentation only mentioned v1/v2, but in the last part it already contains explanation of v3 and v4. The introduction is updated. Signed-off-by: Ulrik De Bie <ulrik.debie-os@e2big.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-13Input: elantech - provide a sysfs knob for crc_enabledUlrik De Bie
The detection of crc_enabled is known to fail for Fujitsu H730. A DMI blacklist is added for that, but it can be expected that other laptops will pop up with this. Here a sysfs knob is provided to alter the behaviour of crc_enabled. Writing 0 or 1 to it sets the variable to 0 or 1. Reading it will show the crc_enabled variable (0 or 1). Reported-by: Stefan Valouch <stefan@valouch.com> Signed-off-by: Ulrik De Bie <ulrik.debie-os@e2big.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-13Input: elantech - report the middle button of the touchpadUlrik De Bie
In the past, no elantech was known with 3 touchpad mouse buttons. Fujitsu H730 is the first known elantech with a middle button. This commit enables this middle button. For backwards compatibility, the Fujitsu is detected via DMI, and only for this one 3 buttons will be announced. Reported-by: Stefan Valouch <stefan@valouch.com> Signed-off-by: Ulrik De Bie <ulrik.debie-os@e2big.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-13Input: alps - ignore bad data on Dell Latitudes E6440 and E7440Pali Rohár
Sometimes on Dell Latitude laptops psmouse/alps driver receive invalid ALPS protocol V3 packets with bit7 set in last byte. More often it can be reproduced on Dell Latitude E6440 or E7440 with closed lid and pushing cover above touchpad. If bit7 in last packet byte is set then it is not valid ALPS packet. I was told that ALPS devices never send these packets. It is not know yet who send those packets, it could be Dell EC, bug in BIOS and also bug in touchpad firmware... With this patch alps driver does not process those invalid packets, but instead of reporting PSMOUSE_BAD_DATA, getting into out of sync state, getting back in sync with the next byte and spam dmesg we return PSMOUSE_FULL_PACKET. If driver is truly out of sync we'll fail the checks on the next byte and report PSMOUSE_BAD_DATA then. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Tested-by: Pali Rohár <pali.rohar@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-09Input: cyapa - switch to using managed resourcesDudley Du
Use of managed resources simplifies error handling and device removal code. Signed-off-by: Dudley Du <dudl@cypress.com> [Dmitry: added open/close methods so cyapa_remove is no longer needed.] Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-09Input: lifebook - use "static inline" instead of "inline" in lifebook.hChen Gang
For functions defined in header files we should use static inline rather than inline, which breaks under the latest upstream gcc (which is really gcc issue, but static inline is better suited regardless). The related error (with allmodconfig under tile): MODPOST 4002 modules ERROR: "lifebook_detect" [drivers/input/mouse/psmouse.ko] undefined! Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-09Input: alps - allow up to 2 invalid packets without resetting devicePali Rohár
On some Dell Latitude laptops ALPS device or Dell EC send one invalid byte in 6 bytes ALPS packet. In this case psmouse driver enter out of sync state. It looks like that all other bytes in packets are valid and also device working properly. So there is no need to do full device reset, just need to wait for byte which match condition for first byte (start of packet). Because ALPS packets are bigger (6 or 8 bytes) default limit is small. This patch increase number of invalid bytes to size of 2 ALPS packets which psmouse driver can drop before do full reset. Resetting ALPS devices take some time and when doing reset on some Dell laptops touchpad, trackstick and also keyboard do not respond. So it is better to do it only if really necessary. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Tested-by: Pali Rohár <pali.rohar@gmail.com> Reviewed-by: Hans de Goede <hdegoede@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-08Input: alps - ignore potential bare packets when device is out of syncPali Rohár
5th and 6th byte of ALPS trackstick V3 protocol match condition for first byte of PS/2 3 bytes packet. When driver enters out of sync state and ALPS trackstick is sending data then driver match 5th, 6th and next 1st bytes as PS/2. It basically means if user is using trackstick when driver is in out of sync state driver will never resync. Processing these bytes as 3 bytes PS/2 data cause total mess (random cursor movements, random clicks) and make trackstick unusable until psmouse driver decide to do full device reset. Lot of users reported problems with ALPS devices on Dell Latitude E6440, E6540 and E7440 laptops. ALPS device or Dell EC for unknown reason send some invalid ALPS PS/2 bytes which cause driver out of sync. It looks like that i8042 and psmouse/alps driver always receive group of 6 bytes packets so there are no missing bytes and no bytes were inserted between valid ones. This patch does not fix root of problem with ALPS devices found in Dell Latitude laptops but it does not allow to process some (invalid) subsequence of 6 bytes ALPS packets as 3 bytes PS/2 when driver is out of sync. So with this patch trackstick input device does not report bogus data when also driver is out of sync, so trackstick should be usable on those machines. Signed-off-by: Pali Rohár <pali.rohar@gmail.com> Tested-by: Pali Rohár <pali.rohar@gmail.com> Cc: stable@vger.kernel.org Reviewed-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-08Input: elantech - fix crc_enabled for Fujitsu H730Ulrik De Bie
The Fujitsu H730 does not work with crc_enabled = 0, even though the crc_enabled bit in the firmware version indicated it would. When switching this value to crc_enabled to 1, the touchpad works. This patch uses DMI to detect H730. Reported-by: Stefan Valouch <stefan@valouch.com> Tested-by: Stefan Valouch <stefan@valouch.com> Tested-by: Alfredo Gemma <alfredo.gemma@gmail.com> Signed-off-by: Ulrik De Bie <ulrik.debie-os@e2big.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-08Input: elantech - use elantech_report_trackpoint for hardware v4 tooUlrik De Bie
The Fujitsu H730 has hardware v4 with a trackpoint. This enables the elantech_report_trackpoint for v4. Reported-by: Stefan Valouch <stefan@valouch.com> Tested-by: Stefan Valouch <stefan@valouch.com> Tested-by: Alfredo Gemma <alfredo.gemma@gmail.com> Signed-off-by: Ulrik De Bie <ulrik.debie-os@e2big.org> Acked-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-11-08Input: twl4030-pwrbutton - ensure a wakeup event is recorded.NeilBrown
This button is treated as a wakeup source, so we need to initialise it correctly. Without the device_init_wakeup() call, dev->power.wakeup will be NULL, and pm_wakeup_event() will do nothing. Signed-off-by: NeilBrown <neilb@suse.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>