linux-stable.git/drivers/input/touchscreen/sur40.c, branch v5.2.7

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32+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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman

media: add video control handlers using V4L2 control framework

2018-02-14T18:29:55+00:00

This patch registers four standard control handlers using the corresponding
V4L2 framework.

Signed-off-by: Florian Echtler 
[hans.verkuil@cisco.com: lower-cased 0x0F and 0xF0]
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: add panel register access functions

2018-02-14T18:29:14+00:00

These functions provide write access to the internal LCD panel registers
which also control the sensor. They can be used to disable the
preprocessor, set the illumination brightness, and adjust gain/contrast
(which are stored together in one register internally called "vsvideo").

Signed-off-by: Florian Echtler 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: add default settings and module parameters for video controls

2018-02-14T18:28:45+00:00

This patch adds parameter definitions and module parameters for the four
userspace controls that the SUR40 can currently provide.

Signed-off-by: Florian Echtler 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

media: add missing blob structure field for tag id

2018-02-14T18:27:52+00:00

The SUR40 can recognize specific printed patterns directly in hardware;
this information (i.e. the pattern id) is present but currently unused
in the blob structure.

Signed-off-by: Florian Echtler 
Signed-off-by: Hans Verkuil 
Signed-off-by: Mauro Carvalho Chehab

Input: sur40 - skip all blobs that are not touches

2017-07-12T21:20:28+00:00

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 
Signed-off-by: Florian Echtler 
Signed-off-by: Dmitry Torokhov

Input: sur40 - silence unnecessary noisy debug output

2017-07-12T21:20:15+00:00

This information is unneccessary, even as debug output.
Leave commented out as documentation of the packet ID quirk.

Signed-off-by: Martin Kaltenbrunner 
Signed-off-by: Florian Echtler 
Signed-off-by: Dmitry Torokhov

Input: sur40 - add additional reverse-engineered information

2017-07-12T21:19:58+00:00

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 
Signed-off-by: Florian Echtler 
Signed-off-by: Dmitry Torokhov

Input: sur40 - fix bad endianness handling in sur40_poll

2017-04-05T15:52:36+00:00

sparse says:

  sur40.c:372:40: warning: restricted __le32 degrades to integer

the header's data is __le32 so we need to convert it before comparing.

Signed-off-by: Martin Kepplinger 
Signed-off-by: Dmitry Torokhov

Input: sur40 - validate number of endpoints before using them

2017-03-16T20:56:54+00:00

Make sure to check the number of endpoints to avoid dereferencing a
NULL-pointer or accessing memory that lie beyond the end of the endpoint
array should a malicious device lack the expected endpoints.

Fixes: bdb5c57f209c ("Input: add sur40 driver for Samsung SUR40... ")
Signed-off-by: Johan Hovold 
Cc: stable@vger.kernel.org	# 3.13
Signed-off-by: Dmitry Torokhov