summaryrefslogtreecommitdiff
path: root/drivers/input/touchscreen
AgeCommit message (Collapse)Author
2014-05-14Input: add driver for Allwinner sunxi SoC's rtp controllerHans de Goede
Note the sun4i-ts controller is capable of detecting a second touch, but when a second touch is present then the accuracy becomes so bad the reported touch location is not useable. The original android driver contains some complicated heuristics using the aprox. distance between the 2 touches to see if the user is making a pinch open / close movement, and then reports emulated multi-touch events around the last touch coordinate (as the dual-touch coordinates are worthless). These kinds of heuristics are just asking for trouble (and don't belong in the kernel). So this driver offers straight forward, reliable single touch functionality only. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-14Input: zforce - make of_device_id array constJingoo Han
Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-14Input: mms114 - make of_device_id array constJingoo Han
Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-14Input: lpc32xx_ts - make of_device_id array constJingoo Han
Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Roland Stigge <stigge@antcom.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-14Input: egalax_ts - make of_device_id array constJingoo Han
Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-14Input: auo-pixcir-ts - make of_device_id array constJingoo Han
Make of_device_id array const, because all OF functions handle it as const. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-14Input: tsc2005 - convert driver to use devm_*Sebastian Reichel
Simplify the driver by using managed resources for memory allocation of internal structure, input device allocation and irq request. Signed-off-by: Sebastian Reichel <sre@kernel.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-14Input: tsc2005 - use dev_err for error messagesSebastian Reichel
Change some dev_dbg() invocations to dev_err() ones, because they are supposed to output error messages. Signed-off-by: Sebastian Reichel <sre@kernel.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-14Input: ads7877 - remove bitrotted commentMark Brown
While searching for users of spi_async() I found a reference in the ad7877 driver to using it to initiate data transfer from the interrupt handler. However there is no code for this, instead the interrupt handler is a threaded handler and uses spi_sync() instead. Remove the bitrotted comment, though in actual fact the use case mentioned is a great use for spi_async() since it would cut down on latency handling the interrupt by saving us a context switch before we start SPI. This was previously implemented, it was removed in commit b534422b2d11 (Input: ad7877 - switch to using threaded IRQ) for code complexity reasons. It may be better to revert that commit instead. Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-14Input: ads7846 - correct log message for spi_sync() errorsMark Brown
While searching for users of spi_async() I got a false positive in the ads7846 driver, fix that. Signed-off-by: Mark Brown <broonie@linaro.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-14Input: w90p910_ts - depend on ARCH_W90X900Jean Delvare
The w90p910_ts touchscreen driver is heavily architecture dependent, so there is no point in letting it be built on other architectures than it was written for. All other W90P910/W90X900 drivers already have that dependency, so it makes things more consistent and configuration easier. Signed-off-by: Jean Delvare <jdelvare@suse.de> Acked-by Wan Zongshun <mcuos.com@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-12Input: atmel-wm97xx - only build for AVR32Arnd Bergmann
Building this driver on ARM/at91 always gives us this error message: drivers/input/touchscreen/atmel-wm97xx.c:63:2: error: #error Unknown CPU, this driver only supports AT32AP700X CPUs. Clearly this configuration is not meant to work, so let's just prevent it in Kconfig. If we ever want to use it on another platform, we should also pass proper resources for GPIO, IRQ and memory, which are hardcoded to AT32AP700X at the moment. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-07Input: atmel_tsadcc: remove driverAlexandre Belloni
The atmel_tsadcc driver is not used anymore, it has been replaced by at91_adc so remove it. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
2014-04-23Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input updates from Dmitry Torokhov: "The main change is that we now publish "firmware ID" for the serio devices to help userspace figure out the kind of touchpads it is dealing with: i8042 will export PS/2 port's PNP IDs as firmware IDs. You will also get more quirks for Synaptics touchpads in various Lenovo laptops, a change to elantech driver to recognize even more models, and fixups to wacom and couple other drivers" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: elantech - add support for newer elantech touchpads Input: soc_button_array - fix a crash during rmmod Input: synaptics - add min/max quirk for ThinkPad T431s, L440, L540, S1 Yoga and X1 Input: synaptics - report INPUT_PROP_TOPBUTTONPAD property Input: Add INPUT_PROP_TOPBUTTONPAD device property Input: i8042 - add firmware_id support Input: serio - add firmware_id sysfs attribute Input: wacom - handle 1024 pressure levels in wacom_tpc_pen Input: wacom - references to 'wacom->data' should use 'unsigned char*' Input: wacom - override 'pressure_max' with value from HID_USAGE_PRESSURE Input: wacom - use full 32-bit HID Usage value in switch statement Input: wacom - missed the last bit of expresskey for DTU-1031 Input: ads7846 - fix device usage within attribute show Input: da9055_onkey - remove use of regmap_irq_get_virq()
2014-04-19Input: ads7846 - fix device usage within attribute showAlexander Stein
With commit e585c40ba (Input: ads7846 - convert to hwmon_device_register_with_groups()) the device passed to the attribute's show function isn't the spi device as before. So fixup the passed device to ads7846_read12_ser. Signed-off-by: Alexander Stein <alexanders83@web.de> Acked-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-04-03Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input updates from Dmitry Torokhov: "The first round of updates for the input subsystem. Just new drivers and existing driver fixes, no core changes except for the new uinput IOCTL to allow userspace to fetch sysfs name of the input device that was created" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (43 commits) Input: edt-ft5x06 - add a missing condition Input: appletouch - fix jumps when additional fingers are detected Input: appletouch - implement sensor data smoothing Input: add driver for SOC button array Input: pm8xxx-vibrator - add DT match table Input: pmic8xxx-pwrkey - migrate to DT Input: pmic8xxx-keypad - migrate to DT Input: pmic8xxx-keypad - migrate to regmap APIs Input: pmic8xxx-keypad - migrate to devm_* APIs Input: pmic8xxx-keypad - fix build by removing gpio configuration Input: add new driver for ARM CLPS711X keypad Input: edt-ft5x06 - add support for M09 firmware version Input: edt-ft5x06 - ignore touchdown events Input: edt-ft5x06 - adjust delays to conform datasheet Input: edt-ft5x06 - add DT support Input: edt-ft5x06 - several cleanups; no functional change Input: appletouch - dial back fuzz setting Input: remove obsolete tnetv107x drivers Input: sirfsoc-onkey - set the capability of reporting KEY_POWER Input: da9052_onkey - use correct register bit for key status ...
2014-04-03Input: edt-ft5x06 - add a missing conditionDan Carpenter
The if condition was accidentally deleted here so we return every time instead of returning on error. Fixes: fd335ab04b3f ('Input: edt-ft5x06 - add support for M09 firmware version') Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Jingoo Han <jg1.han@samsung.com> Acked-By: Lothar Waßmann <LW@KARO-electronics.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-03-28Input: edt-ft5x06 - add support for M09 firmware versionLothar Waßmann
There is a new firmware version for the EDT-FT5x06 chip. Add support for detecting the firmware version and handle the differences appropriately. Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-03-28Input: edt-ft5x06 - ignore touchdown eventsLothar Waßmann
The chip may report invalid coordinates on touchdown events, so don't report the initial touchdown event. Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Acked-by: Fugang Duan <B38611@freescale.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-03-28Input: edt-ft5x06 - adjust delays to conform datasheetLothar Waßmann
The FT5x06 datasheet specifies a minimum reset width of 5ms and a delay between deassertion of reset and start of reporting of 300ms. Adjust the delays to conform to the datasheet. With the original delays I sometimes experienced communication timeouts when initializing the controller. Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Acked-by: Fugang Duan <B38611@freescale.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-03-28Input: edt-ft5x06 - add DT supportLothar Waßmann
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-03-28Input: edt-ft5x06 - several cleanups; no functional changeLothar Waßmann
- remove redundant parens - remove redundant type casts - fix mixed tab/space indentation Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Acked-by: Fugang Duan <B38611@freescale.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-03-28Input: remove obsolete tnetv107x driversArnd Bergmann
The tnetv107x platform is getting removed, so the touchscreen and keypad drivers for this platform will no longer be needed either. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Sekhar Nori <nsekhar@ti.com> Acked-by: Kevin Hilman <khilman@linaro.org> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: linux-input@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-03-01Merge tag 'v3.14-rc4' into nextDmitry Torokhov
Merge with Linux 3.14-rc4 to bring devm_request_any_context_irq().
2014-02-11PM / QoS: Add type to dev_pm_qos_add_ancestor_request() argumentsRafael J. Wysocki
Rework dev_pm_qos_add_ancestor_request() so that device PM QoS type is passed to it as the third argument and make it support the DEV_PM_QOS_LATENCY_TOLERANCE device PM QoS type (in addition to DEV_PM_QOS_RESUME_LATENCY). That will allow the drivers of devices without latency tolerance hardware support to use their ancestors having it as proxies for their latency tolerance requirements. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2014-01-27Input: zforce - add devicetree supportHeiko Stübner
This makes the zforce driver usable on devicetree-based platforms too. Signed-off-by: Heiko Stuebner <heiko.stuebner@bqreaders.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-01-27Input: zforce - use internal pdata pointer instead of dev_get_platdataHeiko Stübner
Devicetree support will be creating its own platfprm data structure that is not attached to the device. Let's use the internal pointer to the pdata instead of re-fetching it with dev_get_platdata(). Signed-off-by: Heiko Stuebner <heiko.stuebner@bqreaders.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-01-27Input: zforce - reduce stack memory allocated to framesLuis Ortega
A frame is a u8 array with the following structure: [PAYLOAD_HEADER, PAYLOAD_LENGTH, ...PAYLOAD_BODY...] PAYLOAD_BODY can be at most 255 bytes long, as it's size is represented by PAYLOAD_LENGTH. Therefore we can reduce the stack memory allocated to payload_buffer[] roughly by half, from 512 to 257 bytes. Signed-off-by: Luis Ortega <luiorpe1@upv.es> Acked-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Heiko Stuebner <heiko@sntech.de> - bq Cervantes (imx6sl) Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-01-27Input: zforce - remove unnecessary payload data checksLuis Ortega
The function zforce_read_packet() reads 2 values (bytes) of payload header, validates them and then proceeds to read the payload body. The function stores all these in a u8 buffer. The PAYLOAD_LENGTH check seems to be trying to detect an overflow error. However, since we are just reading a u8 value from the buffer, these checks are unnecessary and we should simply compare against zero. Signed-off-by: Luis Ortega <luiorpe1@upv.es> Acked-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Heiko Stuebner <heiko@sntech.de> - bq Cervantes (imx6sl) Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-01-27Input: zforce - fix lines exceeding 80 columnsLuis Ortega
Fixed lines exceeding 80 characters long wherever possible, as per the coding style. Signed-off-by: Luis Ortega <luiorpe1@upv.es> Acked-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-01-27Input: zforce - fix spelling errorsLuis Ortega
Fixed a few spelling errors. Signed-off-by: Luis Ortega <luiorpe1@upv.es> Acked-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-01-24Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input subsystem updates from Dmitry Torokhov: "Just a swath of driver fixes and cleanups, no new drivers this time (although ALPS now supports one of the newer protocols, more to come)" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (57 commits) Input: wacom - add support for DTU-1031 Input: wacom - fix wacom->shared guards for dual input devices Input: edt_ft5x06 - use devm_* functions where appropriate Input: hyperv-keyboard - pass through 0xE1 prefix Input: logips2pp - fix spelling s/reciver/receiver/ Input: delete non-required instances of include <linux/init.h> Input: twl4030-keypad - convert to using managed resources Input: twl6040-vibra - remove unneeded check for CONFIG_OF Input: twl4030-keypad - add device tree support Input: twl6040-vibra - add missing of_node_put Input: twl4030-vibra - add missing of_node_put Input: i8042 - cleanup SERIO_I8042 dependencies Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on x86 Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on unicore32 Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on sparc Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO for SH_CAYMAN Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on powerpc Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on mips Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on IA64 Input: i8042 - select ARCH_MIGHT_HAVE_PC_SERIO on ARM/Footbridge ...
2014-01-23Merge branch 'next' into for-linusDmitry Torokhov
First round of input updates for 3.14.
2014-01-21mfd: mc13xxx: Remove useless symbol MFD_MC13783Alexander Shiyan
Symbol MFD_MC13783 always selected by MFD_MC13XXX, so no need to keep additional symbol. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-21Merge tag 'ib-iio-input-3.13-1' into for-mfd-nextLee Jones
Immutable branch for IIO and Input
2014-01-20Input: edt_ft5x06 - use devm_* functions where appropriateLothar Waßmann
Simplify the error path and remove() function by using devm_* functions for requesting gpios and irq and allocating the input device. Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-01-07mfd: ti_am335x_tscadc: Don't read back REG_SESebastian Andrzej Siewior
The purpose of reg_se_cache has been defeated. It should avoid the read-back of the register to avoid the latency and the fact that the bits are reset to 0 after the individual conversation took place. The reason why this is required like this to work, is that read-back of the register removes the bits of the ADC so they do not start another conversation after the register is re-written from the TSC side for the update. To avoid the not required read-back I introduce a "set once" variant which does not update the cache mask. After the conversation completes, the bit is removed from the SE register anyway and we don't plan a new conversation "any time soon". The current set function is renamed to set_cache to distinguish the two operations. This is a small preparation for a larger sync-rework. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Jonathan Cameron <jic23@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-06Input: delete non-required instances of include <linux/init.h>Paul Gortmaker
None of these files are actually using any __init type directives and hence don't need to include <linux/init.h>. Most are just a left over from __devinit and __cpuinit removal, or simply due to code getting copied from one driver to the next. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-12-18Input: zforce - fix error return code in zforce_start()Wei Yongjun
The error code was not set if unable to set config, so the error condition wasn't reflected in the return value. Fix to return a negative error code from the error handling case instead of 0. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Acked-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-12-16Input: ads7846 - convert to hwmon_device_register_with_groups()Guenter Roeck
Simplify the code and create mandatory 'name' attribute by using new hwmon API. Also use is_visible to determine visible attributes instead of creating several different attribute groups. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-12-16Merge tag 'v3.13-rc4' into nextDmitry Torokhov
Synchronize with mainline to bring in the new keycode definitions and new hwmon API.
2013-12-15Input: cyttsp - include appropriate header file in cyttsp_i2c_common.cRashika Kheria
Include cyttsp4_core.h in cyttsp_i2c_common.c to ensure that implementation of cyttsp_i2c_read_block_data() and cyttsp_i2c_write_block_data() match what the rest of the driver expects. Thus, it also eliminates the following warning in cyttsp_i2c_common.c: drivers/input/touchscreen/cyttsp_i2c_common.c:34:5: warning: no previous prototype for ‘cyttsp_i2c_read_block_data’ [-Wmissing-prototypes] drivers/input/touchscreen/cyttsp_i2c_common.c:64:5: warning: no previous prototype for ‘cyttsp_i2c_write_block_data’ [-Wmissing-prototypes] Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-12-15Input: zforce - fix possible driver hang during suspendHeiko Stübner
handle_level_irq masks the interrupt before handling it, and only unmasks it after the handler is finished. So when a touch event happens after threads are suspended, but before the system is fully asleep the irq handler tries to wakeup the thread which will only happen on the next resume, resulting in the wakeup event never being sent and the driver not being able to wake the system from sleep due to the masked irq. Therefore move the wakeup_event to a small non-threaded handler. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-12-09Merge tag 'v3.13-rc3' into for-linusDmitry Torokhov
Merging with the mainline to sync up on changes to serio core.
2013-12-09Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull input updates from Dmitry Torokhov: "An update to ALPS to support devices on Dell XT2 (hopefully working better this time around and although it is largish it should not affect any other ALPS devices) and a tiny update to Elantech driver to support newer devices as well. Also a coupe of new input event codes have been defined" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: ALPS - add support for DualPoint device on Dell XT2 model Input: elantech - add support for newer (August 2013) devices Input: add SW_MUTE_DEVICE switch definition Input: usbtouchscreen - separate report and transmit buffer size handling Input: sur40 - suppress false uninitialized variable warning Input: add key code for ambient light sensor button Input: keyboard - "keycode & KEY_MAX" changes some keycode values
2013-12-06Input: use dev_get_platdata()Jingoo Han
Use the wrapper function for retrieving the platform data instead of accessing dev->platform_data directly. This is a cosmetic change to make the code simpler and enhance the readability. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Acked-by: Fugang Duan <B38611@freescale.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-12-01Input: usbtouchscreen - separate report and transmit buffer size handlingChristian Engelmayer
This patch supports the separate handling of the USB transfer buffer length and the length of the buffer used for multi packet support. For devices supporting multiple report or diagnostic packets, the USB transfer size is now limited to the USB endpoints wMaxPacketSize - otherwise it defaults to the configured report packet size as before. This fixes an issue where event reporting can be delayed for an arbitrary time for multi packet devices. For instance the report size for eGalax devices is defined to the 16 byte maximum diagnostic packet size as opposed to the 5 byte report packet size. In case the driver requests 16 byte from the USB interrupt endpoint, the USB host controller driver needs to split up the request into 2 accesses according to the endpoints wMaxPacketSize of 8 byte. When the first transfer is answered by the eGalax device with not less than the full 8 byte requested, the host controller has got no way of knowing whether the touch controller has got additional data queued and will issue the second transfer. If per example a liftoff event finishes at such a wMaxPacketSize boundary, the data will not be available to the usbtouch driver until a further event is triggered and transfered to the host. From user perspective the BTN_TOUCH release event in this case is stuck until the next touch down event. Signed-off-by: Christian Engelmayer <christian.engelmayer@frequentis.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-12-01Input: sur40 - suppress false uninitialized variable warningDmitry Torokhov
We will never use packet_id before initializing it as we start with "need_blobs == -1" and will set packet_id there. Also use le32_to_cpu when fetching header->packet_id. Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-12-01Input: ads7846 - use IS_ENABLED() macroFabio Estevam
Using the IS_ENABLED() macro can make the code shorter and simpler Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2013-11-25Input: tsc2007 - convert to use devres-managed resourcesDmitry Torokhov
This simplifies error handling path and allows us get rid of tsc2007_remove(). Tested-by: Denis Carikli <denis@eukrea.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
generated by cgit v1.2.3 (git 2.46.0) at 2025-07-21 22:04:39 +0000