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android_kernel_sony_sdm845/drivers/input/mouse
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Filename Latest commit message Latest commit date
Dmitry Torokhov e9fb7cc638 Input: psmouse - disable automatic probing of BYD touchpads 
BYD automatic protocol detection is extremely unreliable and is often
triggers false positives on regular mice, Sentelic touchpads, and other
devices. BYD has several documents that have recommended detection
sequence, but they conflict with each other and, as far as I can see, still
would not produce unique enough output to reliably differentiate BYD from
other PS/2 devices.

OEMs sourcing BYD devices also do not do us any favors by not supplying any
reasonable DMI data and instead leaving turds like "To Be Filled By O.E.M."
in place of vendor data, or "System Serial Number" as serial number.

On top of that BYD is not truly modern multitouch controller, but rather a
single-touch transitional device that only reports absolute coordinates at
the beginning of finger contact and then reverts to reporting
displacements, and thus not very precise; the only benefit from using BYD
mode vs the legacy PS/2 mode is possibility of edge scrolling.

Given the above, and the fact that BYD devices are somewhat uncommon, let's
disable automatic detection of BYD devices. Users who know they have BYD
trackpads or want to experiment can attempt to activate BYD protocol via
sysfs:

	echo -n "byd" > /sys/bus/serio/devices/serio1/drvctl

Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=151691
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=175421
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=120781
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=121281
Fixes: 98ee377144 ("Input: byd - add BYD PS/2 touchpad driver")
Cc: stable@vger.kernel.org # 4.6+
Reviewed-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2016-11-16 17:25:31 -08:00
..
alps.c Input: ALPS - set DualPoint flag for 74 03 28 devices 2016-10-04 11:47:01 -07:00
alps.h Input: ALPS - add touchstick support for SS5 hardware 2016-10-04 11:46:41 -07:00
amimouse.c input: mouse: drop owner assignment from platform_drivers 2014-10-20 16:20:40 +02:00
appletouch.c Input: appletouch - fix jumps when additional fingers are detected 2014-03-30 23:44:17 -07:00
atarimouse.c Remove all #inclusions of asm/system.h 2012-03-28 18:30:03 +01:00
bcm5974.c Input: bcm5974 - add support for the 2015 Macbook Pro 2015-07-27 15:43:47 -07:00
byd.c Merge branch 'next' into for-linus 2016-05-16 17:25:08 -07:00
byd.h Input: byd - add BYD PS/2 touchpad driver 2016-01-27 17:27:25 -08:00
cyapa.c Input: cyapa - fix for losing events during device power transitions 2016-03-04 11:32:13 -08:00
cyapa.h Input: cyapa - fix for losing events during device power transitions 2016-03-04 11:32:13 -08:00
cyapa_gen3.c Input: cyapa - fix for losing events during device power transitions 2016-03-04 11:32:13 -08:00
cyapa_gen5.c Input: cyapa - fix for losing events during device power transitions 2016-03-04 11:32:13 -08:00
cyapa_gen6.c Input: cyapa - fix for losing events during device power transitions 2016-03-04 11:32:13 -08:00
cypress_ps2.c Input: psmouse - use IS_ENABLED instead of homegrown code 2015-02-15 16:08:35 -08:00
cypress_ps2.h Input: psmouse - use IS_ENABLED instead of homegrown code 2015-02-15 16:08:35 -08:00
elan_i2c.h Input: elan_i2c - expand maximum product_id form 0xFF to 0xFFFF 2015-09-21 09:32:40 -07:00
elan_i2c_core.c Input: elan_i2c - properly wake up touchpad on ASUS laptops 2016-08-02 23:40:40 -07:00
elan_i2c_i2c.c Input: elan_i2c - expand maximum product_id form 0xFF to 0xFFFF 2015-09-21 09:32:40 -07:00
elan_i2c_smbus.c Input: elan_i2c - fix return tests of i2c_smbus_read_block_data() 2016-10-03 16:41:00 -07:00
elantech.c Input: elantech - add Fujitsu Lifebook E556 to force crc_enabled 2016-10-07 16:30:12 -07:00
elantech.h Input: elantech - add special check for fw_version 0x470f01 touchpad 2015-08-07 14:54:15 -07:00
focaltech.c Input: psmouse - cleanup Focaltech code 2016-10-24 17:19:25 -07:00
focaltech.h Input: psmouse - rearrange Focaltech init code 2015-12-17 15:23:54 -08:00
gpio_mouse.c input: mouse: drop owner assignment from platform_drivers 2014-10-20 16:20:40 +02:00
hgpk.c Input: hgpk - use %*ph to dump small buffer 2012-09-12 21:57:13 -07:00
hgpk.h Input: psmouse - switch to using dev_*() for messages 2011-10-10 18:28:16 -07:00
inport.c Input: remove CVS keywords 2008-05-20 12:17:39 -04:00
Kconfig Input: byd - add BYD PS/2 touchpad driver 2016-01-27 17:27:25 -08:00
lifebook.c Input: psmouse - use same format for secondary devices as for primary 2016-06-18 17:39:23 -07:00
lifebook.h Input: lifebook - use "static inline" instead of "inline" in lifebook.h 2014-11-09 22:59:25 -08:00
logibm.c Input: remove CVS keywords 2008-05-20 12:17:39 -04:00
logips2pp.c Input: psmouse - rename ps2pp_init() to ps2pp_detect() 2015-12-17 15:24:37 -08:00
logips2pp.h Input: psmouse - rename ps2pp_init() to ps2pp_detect() 2015-12-17 15:24:37 -08:00
Makefile Input: byd - add BYD PS/2 touchpad driver 2016-01-27 17:27:25 -08:00
maplemouse.c Input: remove use of __devexit 2012-11-24 00:05:38 -08:00
navpoint.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2014-12-17 10:06:02 -08:00
pc110pad.c Input: switch to input_abs_*() access functions 2010-08-02 20:29:56 -07:00
psmouse-base.c Input: psmouse - disable automatic probing of BYD touchpads 2016-11-16 17:25:31 -08:00
psmouse.h Input: byd - add BYD PS/2 touchpad driver 2016-01-27 17:27:25 -08:00
pxa930_trkball.c Input: delete non-required instances of include <linux/init.h> 2014-01-06 23:23:57 -08:00
rpcmouse.c input: rpcmouse: use __iomem pointers for MMIO 2012-09-19 15:37:13 +02:00
sentelic.c Input: sentelic - silence some underflow warnings 2015-08-21 09:32:59 -07:00
sentelic.h Input: sentelic - use "static inline" instead of "inline" 2015-05-22 10:59:54 -07:00
sermouse.c Input: delete non-required instances of include <linux/init.h> 2014-01-06 23:23:57 -08:00
synaptics.c Input: synaptics - handle spurious release of trackstick buttons, again 2016-03-17 17:15:57 -07:00
synaptics.h Linux 4.0-rc5 2015-03-23 09:18:27 -07:00
synaptics_i2c.c Input: drop owner assignment from i2c_driver 2015-07-17 16:57:00 -07:00
synaptics_usb.c Input: add missing POINTER / DIRECT properties to a bunch of drivers 2014-09-08 14:58:12 -07:00
touchkit_ps2.c Update broken web addresses in the kernel. 2010-10-18 11:03:14 +02:00
touchkit_ps2.h Input: psmouse - use boolean type 2009-09-10 22:11:38 -07:00
trackpoint.c Input: psmouse - expose drift duration for IBM trackpoints 2014-12-17 15:46:51 -08:00
trackpoint.h Input: psmouse - expose drift duration for IBM trackpoints 2014-12-17 15:46:51 -08:00
vmmouse.c Input: vmmouse - remove port reservation 2016-06-23 17:41:18 -07:00
vmmouse.h Input: add vmmouse driver 2015-04-14 14:29:03 -07:00
vsxxxaa.c Input: vsxxxaa - fix code dropping bytes from queue 2014-10-28 10:33:48 -07:00