linux.git/drivers/input/touchscreen, branch v4.18.12 Clone of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git input: rohm_bu21023: switch to i2c_lock_bus(..., I2C_LOCK_SEGMENT) 2018-09-26T06:39:41+00:00 Peter Rosin peda@axentia.se 2018-06-20T05:17:56+00:00 b1373b80f9ec6a387c1818052e139e52f0f868e0 [ Upstream commit 193c2a07cfaacb9249ab0e3d34bce32490879355 ] Locking the root adapter for __i2c_transfer will deadlock if the device sits behind a mux-locked I2C mux. Switch to the finer-grained i2c_lock_bus with the I2C_LOCK_SEGMENT flag. If the device does not sit behind a mux-locked mux, the two locking variants are equivalent. Signed-off-by: Peter Rosin <peda@axentia.se> Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
[ Upstream commit 193c2a07cfaacb9249ab0e3d34bce32490879355 ]

Locking the root adapter for __i2c_transfer will deadlock if the
device sits behind a mux-locked I2C mux. Switch to the finer-grained
i2c_lock_bus with the I2C_LOCK_SEGMENT flag. If the device does not
sit behind a mux-locked mux, the two locking variants are equivalent.

Signed-off-by: Peter Rosin <peda@axentia.se>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Input: atmel_mxt_ts - only use first T9 instance 2018-09-19T20:41:35+00:00 Nick Dyer nick.dyer@itdev.co.uk 2018-07-27T18:44:20+00:00 3f6592445cbe2e1031d14bcbdfce8778d509b4ca [ Upstream commit 36f5d9ef26e52edff046b4b097855db89bf0cd4a ] The driver only registers one input device, which uses the screen parameters from the first T9 instance. The first T63 instance also uses those parameters. It is incorrect to send input reports from the second instances of these objects if they are enabled: the input scaling will be wrong and the positions will be mashed together. This also causes problems on Android if the number of slots exceeds 32. In the future, this could be handled by looking for enabled touch object instances and creating an input device for each one. Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk> Acked-by: Benson Leung <bleung@chromium.org> Acked-by: Yufeng Shen <miletus@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
[ Upstream commit 36f5d9ef26e52edff046b4b097855db89bf0cd4a ]

The driver only registers one input device, which uses the screen
parameters from the first T9 instance. The first T63 instance also uses
those parameters.

It is incorrect to send input reports from the second instances of these
objects if they are enabled: the input scaling will be wrong and the
positions will be mashed together.

This also causes problems on Android if the number of slots exceeds 32.

In the future, this could be handled by looking for enabled touch object
instances and creating an input device for each one.

Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
Acked-by: Benson Leung <bleung@chromium.org>
Acked-by: Yufeng Shen <miletus@chromium.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2018-06-27T16:16:53+00:00 Linus Torvalds torvalds@linux-foundation.org 2018-06-27T16:16:53+00:00 c92067ae06cb71561628d9f4b24b56c1813c54e0 Pull input updates from Dmitry Torokhov: - the main change is a fix for my brain-dead patch to PS/2 button reporting for some protocols that made it in 4.17 - there is a new driver for Spreadtum vibrator that I intended to send during merge window but ended up not sending the 2nd pull request. Given that this is a brand new driver we should not see regressions here - a fixup to Elantech PS/2 driver to avoid decoding errors on Thinkpad P52 - addition of few more ACPI IDs for Silead and Elan drivers - RMI4 is switched to using IRQ domain code instead of rolling its own implementation * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: psmouse - fix button reporting for basic protocols Input: xpad - fix GPD Win 2 controller name Input: elan_i2c_smbus - fix more potential stack buffer overflows Input: elan_i2c - add ELAN0618 (Lenovo v330 15IKB) ACPI ID Input: elantech - fix V4 report decoding for module with middle key Input: elantech - enable middle button of touchpads on ThinkPad P52 Input: do not assign new tracking ID when changing tool type Input: make input_report_slot_state() return boolean Input: synaptics-rmi4 - fix axis-swap behavior Input: synaptics-rmi4 - fix the error return code in rmi_probe_interrupts() Input: synaptics-rmi4 - convert irq distribution to irq_domain Input: silead - add MSSL0002 ACPI HID Input: goldfish_events - fix checkpatch warnings Input: add Spreadtrum vibrator driver 
Pull input updates from Dmitry Torokhov:

 - the main change is a fix for my brain-dead patch to PS/2 button
   reporting for some protocols that made it in 4.17

 - there is a new driver for Spreadtum vibrator that I intended to send
   during merge window but ended up not sending the 2nd pull request.
   Given that this is a brand new driver we should not see regressions
   here

 - a fixup to Elantech PS/2 driver to avoid decoding errors on Thinkpad
   P52

 - addition of few more ACPI IDs for Silead and Elan drivers

 - RMI4 is switched to using IRQ domain code instead of rolling its own
   implementation

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: psmouse - fix button reporting for basic protocols
  Input: xpad - fix GPD Win 2 controller name
  Input: elan_i2c_smbus - fix more potential stack buffer overflows
  Input: elan_i2c - add ELAN0618 (Lenovo v330 15IKB) ACPI ID
  Input: elantech - fix V4 report decoding for module with middle key
  Input: elantech - enable middle button of touchpads on ThinkPad P52
  Input: do not assign new tracking ID when changing tool type
  Input: make input_report_slot_state() return boolean
  Input: synaptics-rmi4 - fix axis-swap behavior
  Input: synaptics-rmi4 - fix the error return code in rmi_probe_interrupts()
  Input: synaptics-rmi4 - convert irq distribution to irq_domain
  Input: silead - add MSSL0002 ACPI HID
  Input: goldfish_events - fix checkpatch warnings
  Input: add Spreadtrum vibrator driver
docs: Fix some broken references 2018-06-15T21:10:01+00:00 Mauro Carvalho Chehab mchehab+samsung@kernel.org 2018-05-08T18:14:57+00:00 5fb94e9ca333f0fe1d96de06704a79942b3832c3 As we move stuff around, some doc references are broken. Fix some of them via this script: ./scripts/documentation-file-ref-check --fix Manually checked if the produced result is valid, removing a few false-positives. Acked-by: Takashi Iwai <tiwai@suse.de> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Stephen Boyd <sboyd@kernel.org> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Coly Li <colyli@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Jonathan Corbet <corbet@lwn.net> 
As we move stuff around, some doc references are broken. Fix some of
them via this script:
	./scripts/documentation-file-ref-check --fix

Manually checked if the produced result is valid, removing a few
false-positives.

Acked-by: Takashi Iwai <tiwai@suse.de>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Coly Li <colyli@suse.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Acked-by: Jonathan Corbet <corbet@lwn.net>
Input: silead - add MSSL0002 ACPI HID 2018-06-05T17:29:38+00:00 Hans de Goede hdegoede@redhat.com 2018-06-05T16:34:22+00:00 fc573af632b44f355f8fa15ab505f5593368078d The Silead touchscreen on the Chuwi Vi8 tablet uses MSSL0002 as ACPI HID, rather then the usual MSSL1680 id. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
The Silead touchscreen on the Chuwi Vi8 tablet uses MSSL0002 as ACPI HID,
rather then the usual MSSL1680 id.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 Input: goodix - add new ACPI id for GPD Win 2 touch screen 2018-06-04T20:31:48+00:00 Ethan Lee flibitijibibo@gmail.com 2018-05-31T23:13:17+00:00 5ca4d1ae9bad0f59bd6f851c39b19f5366953666 GPD Win 2 Website: http://www.gpd.hk/gpdwin2.asp Tested on a unit from the first production run sent to Indiegogo backers Signed-off-by: Ethan Lee <flibitijibibo@gmail.com> Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
GPD Win 2 Website: http://www.gpd.hk/gpdwin2.asp

Tested on a unit from the first production run sent to Indiegogo backers

Signed-off-by: Ethan Lee <flibitijibibo@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: ti_am335x_tsc - prevent system suspend when TSC is in use 2018-05-30T23:42:12+00:00 Grygorii Strashko grygorii.strashko@ti.com 2018-05-30T21:25:21+00:00 22a844b853684a9f6088ede15114f8b286b49560 Prevent system suspend while user has finger on touch screen, because TSC is wakeup source and suspending device while in use will result in failure to disable the module. This patch uses pm_stay_awake() and pm_relax() APIs to prevent and resume system suspend as required. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Vignesh R <vigneshr@ti.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Prevent system suspend while user has finger on touch screen,
because TSC is wakeup source and suspending device while in use will
result in failure to disable the module.
This patch uses pm_stay_awake() and pm_relax() APIs to prevent and
resume system suspend as required.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 Input: ti_am335x_tsc - ack pending IRQs at probe and before suspend 2018-05-30T23:42:12+00:00 Grygorii Strashko grygorii.strashko@ti.com 2018-05-30T21:23:15+00:00 46850420e5e2330781aae5ff30cf19392d49979e It is seen that just enabling the TSC module triggers a HW_PEN IRQ without any interaction with touchscreen by user. This results in first suspend/resume sequence to fail as system immediately wakes up from suspend as soon as HW_PEN IRQ is enabled in suspend handler due to the pending IRQ. Therefore clear all IRQs at probe and also in suspend callback for sanity. Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Vignesh R <vigneshr@ti.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
It is seen that just enabling the TSC module triggers a HW_PEN IRQ
without any interaction with touchscreen by user. This results in first
suspend/resume sequence to fail as system immediately wakes up from
suspend as soon as HW_PEN IRQ is enabled in suspend handler due to the
pending IRQ. Therefore clear all IRQs at probe and also in suspend
callback for sanity.

Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Vignesh R <vigneshr@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: mk712 - update documentation web link 2018-05-29T23:34:22+00:00 Martin Kepplinger martink@posteo.de 2018-05-29T22:56:29+00:00 cbd606ec9feff7c428cfec9b4a90a6b5e6744c31 At the mentioned address there's nothing found. By searching information on the controller chip still can be found, so update the link to the resulting page. Signed-off-by: Martin Kepplinger <martink@posteo.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
At the mentioned address there's nothing found. By searching information
on the controller chip still can be found, so update the link to the
resulting page.

Signed-off-by: Martin Kepplinger <martink@posteo.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
 Input: atmel_mxt_ts - fix reset-gpio for level based irqs 2018-05-24T16:56:47+00:00 Sebastian Reichel sebastian.reichel@collabora.co.uk 2018-05-24T16:33:36+00:00 ca1cd36cef00260db6b35b32d863e0c580c0488d The current reset-gpio support triggers an interrupt storm on platforms using the maxtouch with level based interrupt. The Motorola Droid 4, which I used for some of the tests is not affected, since it uses a edge based interrupt. This change avoids the interrupt storm by enabling the device while its interrupt is disabled. Afterwards we wait 100ms. This is important for two reasons: The device is unresponsive for some time (~22ms for mxt224E) and the CHG (interrupt) line is not working properly for 100ms. We don't need to wait for any following interrupts, since the following mxt_initialize() checks for bootloader mode anyways. This fixes a boot issue on GE PPD (watchdog kills device due to interrupt storm) and does not cause regression on Motorola Droid 4. Fixes: f657b00df22e ("Input: atmel_mxt_ts - add support for reset line") Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk> Reviewed-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
The current reset-gpio support triggers an interrupt storm on platforms
using the maxtouch with level based interrupt. The Motorola Droid 4,
which I used for some of the tests is not affected, since it uses a edge
based interrupt.

This change avoids the interrupt storm by enabling the device while its
interrupt is disabled. Afterwards we wait 100ms. This is important for
two reasons: The device is unresponsive for some time (~22ms for
mxt224E) and the CHG (interrupt) line is not working properly for 100ms.
We don't need to wait for any following interrupts, since the following
mxt_initialize() checks for bootloader mode anyways.

This fixes a boot issue on GE PPD (watchdog kills device due to
interrupt storm) and does not cause regression on Motorola Droid 4.

Fixes: f657b00df22e ("Input: atmel_mxt_ts - add support for reset line")
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>