kernel/linux.git/drivers/input/touchscreen/usbtouchscreen.c, branch v5.4.228

Input: usbtouchscreen - fix control-request directions

2021-07-14T14:53:00+00:00

commit 41e81022a04a0294c55cfa7e366bc14b9634c66e upstream. The direction of the pipe argument must match the request-type direction bit or control requests may fail depending on the host-controller-driver implementation. Fix the four control requests which erroneously used usb_rcvctrlpipe(). Fixes: 1d3e20236d7a ("[PATCH] USB: usbtouchscreen: unified USB touchscreen driver") Fixes: 24ced062a296 ("usbtouchscreen: add support for DMC TSC-10/25 devices") Fixes: 9e3b25837a20 ("Input: usbtouchscreen - add support for e2i touchscreen controller") Signed-off-by: Johan Hovold Cc: stable@vger.kernel.org # 2.6.17 Link: https://lore.kernel.org/r/20210524092048.4443-1-johan@kernel.org Signed-off-by: Dmitry Torokhov Signed-off-by: Greg Kroah-Hartman

Input: usbtouchscreen - add support for BonXeon TP

2020-06-03T06:21:15+00:00

[ Upstream commit e3b4f94ef52ae1592cbe199bd38dbdc0d58b2217 ] Based on available information this uses the singletouch irtouch protocol. This is tested and confirmed to be fully functional on the BonXeon TP hardware I have. Signed-off-by: James Hilliard Link: https://lore.kernel.org/r/20200413184217.55700-1-james.hilliard1@gmail.com Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov Signed-off-by: Sasha Levin

Input: usbtouchscreen - initialize PM mutex before using it

2019-08-01T17:55:20+00:00

Mutexes shall be initialized before they are used. Fixes: 12e510dbc57b2 ("Input: usbtouchscreen - fix deadlock in autosuspend") Reported-by: syzbot+199ea16c7f26418b4365@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61

2019-05-24T15:36:45+00:00

Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 675 mass ave cambridge ma 02139 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 441 file(s). Signed-off-by: Thomas Gleixner Reviewed-by: Michael Ellerman (powerpc) Reviewed-by: Richard Fontana Reviewed-by: Allison Randal Reviewed-by: Kate Stewart Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190520071858.739733335@linutronix.de Signed-off-by: Greg Kroah-Hartman

Input: usbtouchscreen - add sysfs attribute for 3M MTouch firmware rev

2018-05-15T19:14:16+00:00

Allow querying of the firmware revision of the device example: 4.10 Tested on ZII RDU2 platform and on Intel x86_64 PC. Signed-off-by: Nick Dyer Tested-by: Nikita Yushchenko Signed-off-by: Dmitry Torokhov

Input: usbtouchscreen - do not rely on input_dev->users

2018-03-26T22:22:16+00:00

If the device is unused and suspended, a call to open will cause the device to autoresume through the call to usb_autopm_get_interface(). input_dev->users is already incremented by the input subsystem, therefore this expression will always be evaluated to true: if (input->users || usbtouch->type->irq_always) result = usb_submit_urb(usbtouch->irq, GFP_NOIO); The same URB will then be fail when resubmitted in usbtouch_open(). Introduce usbtouch->is_open to keep track of the state instead. Signed-off-by: Marcus Folkesson Signed-off-by: Dmitry Torokhov

Input: usbtouchscreen - fix deadlock in autosuspend

2018-03-26T22:21:24+00:00

usb_autopm_get_interface() that is called in usbtouch_open() does an autoresume if the device is suspended. input_dev->mutex used in usbtouch_resume() is in this case already taken by the input subsystem and will cause a deadlock. Signed-off-by: Marcus Folkesson Signed-off-by: Dmitry Torokhov

Input: inline macros for MODULE_LICENSE, etc

2018-01-17T17:52:22+00:00

Inline macro for MODULE_LICENSE to make the license information easy to find, eg with grep. Inline the other module-related macros at the same time. A simplified version of the semantic patch for the MODULE_LICENSE case is as follows: (http://coccinelle.lip6.fr/) // @s@ identifier i; expression e; @@ @@ declarer name MODULE_LICENSE; identifier s.i; expression s.e; @@ MODULE_LICENSE( - i + e ); // Signed-off-by: Julia Lawall [dtor: added a couple of drivers missed by the script, removed a few unused DRIVER_VERSION macros] Signed-off-by: Dmitry Torokhov

Input: usbtouchscreen - avoid unresponsive TSC-30 touch screen

2015-07-23T21:43:17+00:00

This patch fixes a problem in the usbtouchscreen driver for DMC TSC-30 touch screen. Due to a missing delay between the RESET and SET_RATE commands, the touch screen may become unresponsive during system startup or driver loading. According to the DMC documentation, a delay is needed after the RESET command to allow the chip to complete its internal initialization. As this delay is not guaranteed, we had a system where the touch screen occasionally did not send any touch data. There was no other indication of the problem. The patch fixes the problem by adding a 150ms delay between the RESET and SET_RATE commands. Cc: stable@vger.kernel.org Suggested-by: Jakob Mustafa Signed-off-by: Bernhard Bender Signed-off-by: Dmitry Torokhov

Input: usbtouchscreen - add new model from IRTOUCHSYSTEMS

2015-03-24T16:29:34+00:00

This adds support for another model of IRTOUCH SYSTEMS Co.,LtD infrared touchscreens. The USB vendorID/deviceID is 6615/0012. It is also sold under the label "Elektrosil". The datasheet states that coordinates for x and y are in the range from 0 to 32767. Signed-off-by: Lars Poeschel Signed-off-by: Dmitry Torokhov