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path: root/drivers/input/touchscreen
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2017-09-29Input: ad7879 - use managed devm_device_add_groupAndi Shyti
Commit 57b8ff070f98 ("driver core: add devm_device_add_group() and friends") has added the managed version for creating sysfs group files. Use devm_device_add_group instead of sysfs_create_group and remove the action that cleans the sysfs file when exiting the driver. Signed-off-by: Andi Shyti <andi@etezian.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-09-29Input: edt-ft5x06 - use managed devm_device_add_groupAndi Shyti
Commit 57b8ff070f98 ("driver core: add devm_device_add_group() and friends") has added the managed version for creating sysfs group files. Use devm_device_add_group instead of sysfs_create_group and remove the relative sysfs_remove_group and goto label. Signed-off-by: Andi Shyti <andi@etezian.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-09-29Input: wdt87xx_i2c - use managed devm_device_add_groupAndi Shyti
Commit 57b8ff070f98 ("driver core: add devm_device_add_group() and friends") has added the managed version for creating sysfs group files. Use devm_device_add_group instead of sysfs_create_group and remove the relative sysfs_remove_group. Signed-off-by: Andi Shyti <andi@etezian.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-09-29Input: rohm_bu21023 - use managed devm_device_add_groupAndi Shyti
Commit 57b8ff070f98 ("driver core: add devm_device_add_group() and friends") has added the managed version for creating sysfs group files. Use devm_device_add_group instead of sysfs_create_group and remove the action that cleans the sysfs file when exiting the driver. Signed-off-by: Andi Shyti <andi@etezian.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-09-29Input: raydium_i2c_ts - use managed devm_device_add_groupAndi Shyti
Commit 57b8ff070f98 ("driver core: add devm_device_add_group() and friends") has added the managed version for creating sysfs group files. Use devm_device_add_group instead of sysfs_create_group and remove the action that cleans the sysfs file when exiting the driver. Signed-off-by: Andi Shyti <andi@etezian.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-09-29Input: melfas_mip4 - use managed devm_device_add_groupAndi Shyti
Commit 57b8ff070f98 ("driver core: add devm_device_add_group() and friends") has added the managed version for creating sysfs group files. Use devm_device_add_group instead of sysfs_create_group and remove the action that cleans the sysfs file when exiting the driver. Signed-off-by: Andi Shyti <andi@etezian.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-09-29Input: elants_i2c - use managed devm_device_add_groupAndi Shyti
Commit 57b8ff070f98 ("driver core: add devm_device_add_group() and friends") has added the managed version for creating sysfs group files. Use devm_device_add_group instead of sysfs_create_group and remove the action that cleans the sysfs file when exiting the driver. Signed-off-by: Andi Shyti <andi@etezian.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-09-26Input: usbtouchscreen - use EXPERT instead of EMBEDDED for EasyTouchRandy Dunlap
Change control of TOUCHSCREEN_USB_EASYTOUCH prompt string from EMBEDDED to EXPERT to match the rest of this Kconfig file. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-09-25Merge tag 'iio-for-4.15a' of ↵Greg Kroah-Hartman
git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-next Jonathan writes: Round one of new device support, features and cleanup for IIO in the 4.15 cycle. Note there is a misc driver drop in here given we have support in IIO and the feeling is no one will care. A large part of this series is a boiler plate removal series avoiding the need to explicitly provide THIS_MODULE in various locations. It's very dull but touches all drivers. New device support * ad5446 - add ids to support compatible parts DAC081S101, DAC101S101, DAC121S101. - add the dac7512 id and drop the misc driver as feeling is no one is using it (was introduced for a board that is long obsolete) * mt6577 - add bindings for mt2712 which is fully compatible with other supported parts. * st_pressure - add support for LPS33HW and LPS35HW with bindings (ids mostly). New features * ccs811 - Add support for the data ready trigger. * mma8452 - remove artifical restriction on supporting multiple event types at the same time. * tcs3472 - support out of threshold events Core and tree wide cleanup * Use macro magic to remove the need to provide THIS_MODULE as part of struct iio_info or struct iio_trigger_ops. This is similar to work done in a number of other subsystems (e.g. i2c, spi). All drivers are fixed and then the fields in these structures are removed. This will cause build failures for out of tree drivers and any new drivers that cross with this work going into the kernel. Note mostly done with a coccinelle patch, included in the series on the mailing list but not merged as the fields no longer exist in the structures so the any hold outs will cause a build failure. Cleanups * ads1015 - avoid writing config register when it doesn't change. - add 10% to conversion wait time as it seems it is sometimes a little small. * ade7753 - replace use of core mlock with a local lock. This is part of a long term effort to make the use of mlock opaque and single purpose. * ade7759 - expand the use of buf_lock to cover previous mlock cases. This is a slightly nicer solution to the same issue as in ade7753. * cros_ec - drop an unused variable * inv_mpu6050 - add a missing break in a switch for consistency - not actual bug, - make some local arrays static to save on object code size. * max5481 - drop manual setting of the spi module owner as handled by the spi core. * max5487 - drop manual setting of the spi module owner as handled by the spi core. * max9611 - drop explicit setting of the i2c module owner as handled by the i2c core. * mcp320x - speed up reads on single channel devices, - drop unused of_device_id data elements, - document the struct mcp320x, - improve binding docs to reflect restrictions on spi setup and to make it explicit that the reference regulator is needed. * mma8452 - symbolic to octal permissions, - unsigned to unsigned int. * st_lsm6dsx - avoid setting odr values multiple times, - drop config of LIR as it is only ever set to the existing defaults, - drop rounding configuration as it only ever matches the defaults. * ti-ads8688 - drop manual setting of the spi module owner as handled by the spi core. * tsl2x7x - constify the i2c_device_id, - cleanup limit checks to avoid static checker warnings (and generally have nicer code).
2017-09-22Input: stmfts - use devm_device_add_groupAndi Shyti
instead of sysfs_create_group. Signed-off-by: Andi Shyti <andi.shyti@samsung.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-09-19Input: wm97xx: add new AC97 bus supportRobert Jarzmik
This adds support for the new AC97 bus code, which discovers the devices rather than uses platform data. As part of this discovery, it enables a multi-function device wm97xx, which supports touchscreen, battery, ADC and an audio codec. This patch adds the code to bind the touchscreen "cell" as the touchscreen driver. This was tested on the pxa architecture with a pxa270 + wm9713 + the mioa701 touchscreen. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-09-19Input: wm97xx: split out touchscreen registeringRobert Jarzmik
wm97xx-core does several things in it initialization : - touchscreen input device setup - battery device creation As the wm97xx is actually a multi-function device handling an audio codec, a touchscreen, a gpio block and an ADC, reshape the probing to isolate what is truly input/touchscreen specific from the remaining part. This is only code shuffling, there is no functional change. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2017-09-16Merge branch 'for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input Pull more input updates from Dmitry Torokhov: "A second round of updates for the input subsystem: - a new driver for PWM-controlled vibrators - ucb1400 touchscreen driver had completely busted suspend/resume handling - we now handle "home" button found on some devices with Goodix touchscreens - assorted other fixups" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: i8042 - add Gigabyte P57 to the keyboard reset table Input: xpad - validate USB endpoint type during probe Input: ucb1400_ts - fix suspend and resume handling Input: edt-ft5x06 - fix access to non-existing register Input: elantech - make arrays debounce_packet static, reduces object code size Input: surface3_spi - make const array header static, reduces object code size Input: goodix - add support for capacitive home button Input: add a driver for PWM controllable vibrators Input: adi - make array seq static, reduces object code size
2017-09-14dmi: Mark all struct dmi_system_id instances constChristoph Hellwig
... and __initconst if applicable. Based on similar work for an older kernel in the Grsecurity patch. [JD: fix toshiba-wmi build] [JD: add htcpen] [JD: move __initconst where checkscript wants it] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jean Delvare <jdelvare@suse.de>
2017-09-11Input: ucb1400_ts - fix suspend and resume handlingDmitry Torokhov
Instead of stopping the touchscreen we were starting it in suspend, and disabling it in resume. Fixes: c899afedf168 ("Input: ucb1400_ts - convert to threaded IRQ") Reported-by: Anton Volkov <avolkov@ispras.ru> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-09-11Input: edt-ft5x06 - fix access to non-existing registerLuca Ceresoli
reg_addr->reg_report_rate is supposed to exist in M06, not M09. The driver is written to skip avoids access to non-existing registers when the register address is NO_REGISTER (0xff). But reg_addr->reg_report_rate is initialized to 0x00 by devm_kzalloc() (in edt_ft5x06_ts_probe()) and not changed thereafter. So the checks do not work and an access to register 0x00 is done. Fix by setting reg_addr->reg_report_rate to NO_REGISTER. Also fix the only place where reg_report_rate is checked against zero instead of NO_REGISTER. Signed-off-by: Luca Ceresoli <luca@lucaceresoli.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-09-11Input: surface3_spi - make const array header static, reduces object code sizeColin Ian King
Don't populate the const array header on the stack, instead make it static. Makes the object code smaller by over 180 bytes: Before: text data bss dec hex filename 6003 1536 0 7539 1d73 surface3_spi.o After: text data bss dec hex filename 5726 1632 0 7358 1cbe surface3_spi.o Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-09-11Input: goodix - add support for capacitive home buttonSergei A. Trusov
On some x86 tablets with a Goodix touchscreen, the Windows logo on the front is a capacitive home button. Touching this button results in a touch with bit 4 of the first byte set, while only the lower 4 bits (0-3) are used to indicate the number of touches. Report a KEY_LEFTMETA press when this happens. Note that the hardware might support more than one button, in which case the "id" byte of coor_data would identify the button in question. This is not implemented as we don't have access to hardware with multiple buttons. Signed-off-by: Sergei A. Trusov <sergei.a.trusov@ya.ru> Acked-by: Bastien Nocera <hadess@hadess.net> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-22input: tsc2007 - drop the driver_module assignment in iio interface.Jonathan Cameron
This is now handled via some macro magic during the register. The field in iio_info will be removed shortly. Cc: Linux Input <linux-input@vger.kernel.org> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
2017-08-21Input: atmel_mxt_ts - add support for reset lineSebastian Reichel
Provide support for controlling reset pin. If this is not driven correctly the device will be held in reset and will not respond. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-21Input: atmel_mxt_ts - use more managed resourcesSebastian Reichel
Switch mxt_data and interrupt to resource managed allocation methods, which cleans up the driver slightly and prepares for adding reset GPIO support. Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-18Input: wacom_w8001 - constify serio_device_idArvind Yadav
serio_device_id are not supposed to change at runtime. All functions working with serio_device_id provided by <linux/serio.h> work with const serio_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-18Input: tsc40 - constify serio_device_idArvind Yadav
serio_device_id are not supposed to change at runtime. All functions working with serio_device_id provided by <linux/serio.h> work with const serio_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-18Input: touchwin - constify serio_device_idArvind Yadav
serio_device_id are not supposed to change at runtime. All functions working with serio_device_id provided by <linux/serio.h> work with const serio_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-18Input: touchright - constify serio_device_idArvind Yadav
serio_device_id are not supposed to change at runtime. All functions working with serio_device_id provided by <linux/serio.h> work with const serio_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-18Input: touchit213 - constify serio_device_idArvind Yadav
serio_device_id are not supposed to change at runtime. All functions working with serio_device_id provided by <linux/serio.h> work with const serio_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-18Input: penmount - constify serio_device_idArvind Yadav
serio_device_id are not supposed to change at runtime. All functions working with serio_device_id provided by <linux/serio.h> work with const serio_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-18Input: mtouch - constify serio_device_idArvind Yadav
serio_device_id are not supposed to change at runtime. All functions working with serio_device_id provided by <linux/serio.h> work with const serio_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-18Input: inexio - constify serio_device_idArvind Yadav
serio_device_id are not supposed to change at runtime. All functions working with serio_device_id provided by <linux/serio.h> work with const serio_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-18Input: hampshire - constify serio_device_idArvind Yadav
serio_device_id are not supposed to change at runtime. All functions working with serio_device_id provided by <linux/serio.h> work with const serio_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-18Input: gunze - constify serio_device_idArvind Yadav
serio_device_id are not supposed to change at runtime. All functions working with serio_device_id provided by <linux/serio.h> work with const serio_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-18Input: fujitsu_ts - constify serio_device_idArvind Yadav
serio_device_id are not supposed to change at runtime. All functions working with serio_device_id provided by <linux/serio.h> work with const serio_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-18Input: elo - constify serio_device_idArvind Yadav
serio_device_id are not supposed to change at runtime. All functions working with serio_device_id provided by <linux/serio.h> work with const serio_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-18Input: dynapro - constify serio_device_idArvind Yadav
serio_device_id are not supposed to change at runtime. All functions working with serio_device_id provided by <linux/serio.h> work with const serio_device_id. So mark the non-const structs as const. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-14Input: sun4i-ts - constify thermal_zone_of_device_ops structuresJulia Lawall
The thermal_zone_of_device_ops structure is only passed as the fourth argument to devm_thermal_zone_of_sensor_register, which is declared as const. Thus the thermal_zone_of_device_ops structure itself can be const. Done with the help of Coccinelle. Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-14Input: mxs-lradc - make symbol mxs_lradc_ts_irq_names staticWei Yongjun
Fixes the following sparse warning: drivers/input/touchscreen/mxs-lradc-ts.c:33:12: warning: symbol 'mxs_lradc_ts_irq_names' was not declared. Should it be static? Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> [dtor: changed to static const char * const] Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-14Input: mxs-lradc - use correct error checkPan Bian
Function devm_ioremap() will return a NULL pointer on failure. However, in function mxs_lradc_ts_probe(), its return value is checked with IS_ERR(), which cannot detect the exceptional case. Signed-off-by: Pan Bian <bianpan2016@163.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-08-14Input: mxs-lradc - do a NULL check on ioresFabio Estevam
platform_get_resource() may fail, so we should better do a NULL check and return error on failure. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-07-24Merge branch 'bind_unbind' of ↵Dmitry Torokhov
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core into next This brings in devm_device_add_group() and friends so that we can create driver-specific device attributes as managed resources.
2017-07-12Input: sur40 - skip all blobs that are not touchesFlorian Echtler
The SUR40 labels all reported blobs as touch, token, or generic blob. Previously, all blobs were reported as touch regardless of type, causing lots of false positives. Present patch fixes this. Signed-off-by: Martin Kaltenbrunner <modin@yuri.at> Signed-off-by: Florian Echtler <floe@butterbrot.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-07-12Input: sur40 - silence unnecessary noisy debug outputFlorian Echtler
This information is unneccessary, even as debug output. Leave commented out as documentation of the packet ID quirk. Signed-off-by: Martin Kaltenbrunner <modin@yuri.at> Signed-off-by: Florian Echtler <floe@butterbrot.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-07-12Input: sur40 - add additional reverse-engineered informationFlorian Echtler
Due to recent reverse engineering efforts, a lot more information is now available about the internals of the SUR40. We document this in the kernel driver for future use. Signed-off-by: Martin Kaltenbrunner <modin@yuri.at> Signed-off-by: Florian Echtler <floe@butterbrot.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-07-12Input: ads7846 - constify attribute_group structuresArvind Yadav
attribute_groups are not supposed to change at runtime. All functions working with attribute_groups provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 9086 624 0 9710 25ee drivers/input/touchscreen/ads7846.o File size After adding 'const': text data bss dec hex filename 9198 496 0 9694 25de drivers/input/touchscreen/ads7846.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-07-12Input: elants_i2c - constify attribute_group structuresArvind Yadav
attribute_groups are not supposed to change at runtime. All functions working with attribute_groups provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 9448 1008 0 10456 28d8 drivers/input/touchscreen/elants_i2c.o File size After adding 'const': text data bss dec hex filename 9496 944 0 10440 28c8 drivers/input/touchscreen/elants_i2c.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-07-12Input: raydium_i2c_ts - constify attribute_group structuresArvind Yadav
attribute_groups are not supposed to change at runtime. All functions working with attribute_groups provided by <linux/sysfs.h> work with const attribute_group. So mark the non-const structs as const. File size before: text data bss dec hex filename 7801 560 0 8361 20a9 drivers/input/touchscreen/raydium_i2c_ts.o File size After adding 'const': text data bss dec hex filename 7849 496 0 8345 2099 drivers/input/touchscreen/raydium_i2c_ts.o Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-07-06Merge branch 'next' into for-linusDmitry Torokhov
Prepare input updates for 4.13 merge window.
2017-06-09Input: stmfts - mark all PM functions as __maybe_unusedArnd Bergmann
We get a harmless warning when CONFIG_RUNTIME_PM is disabled: drivers/input/touchscreen/stmfts.c:760:12: error: 'stmfts_runtime_resume' defined but not used [-Werror=unused-function] static int stmfts_runtime_resume(struct device *dev) drivers/input/touchscreen/stmfts.c:748:12: error: 'stmfts_runtime_suspend' defined but not used [-Werror=unused-function] static int stmfts_runtime_suspend(struct device *dev) The regular PM functions are already marked as __maybe_unused, so let's do the same for the runtime-PM as well. Fixes: 78bcac7b2ae1 ("Input: add support for the STMicroelectronics FingerTip touchscreen") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-06-05Input: add support for the STMicroelectronics FingerTip touchscreenAndi Shyti
The stmfts (ST-Microelectronics FingerTip S) touchscreen device is a capacitive multi-touch controller mainly for mobile use. It's connected through i2c bus at the address 0x49 and it interfaces with userspace through input event interface. At the current state it provides a touchscreen multitouch functionality up to 10 fingers. Each finger is enumerated with a distinctive id (from 0 to 9). If enabled the device can support single "touch" hovering, by providing three coordinates, x, y and distance. It is possible to select the touchkey functionality which provides a basic two keys interface for "home" and "back" menu, typical in mobile phones. Signed-off-by: Andi Shyti <andi.shyti@samsung.com> Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-06-02Input: s3c2410_ts - handle return value of clk_prepare_enableArvind Yadav
clk_prepare_enable() can fail here and we must check its return value. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2017-06-02Merge tag 'v4.12-rc3' into for-linusDmitry Torokhov
Merge with mainline to get acpi_dev_present() needed by patches to axp20x-pek driver.
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-04 02:03:03 +0000