linux/drivers/input/mouse, branch v4.9

Input: psmouse - disable automatic probing of BYD touchpads

2016-11-17T01:25:31Z

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: 98ee37714493 ("Input: byd - add BYD PS/2 touchpad driver") Cc: stable@vger.kernel.org # 4.6+ Reviewed-by: Pali Rohár Signed-off-by: Dmitry Torokhov

Input: psmouse - cleanup Focaltech code

2016-10-25T00:19:25Z

psmouse->name "Focaltech Touchpad" is an overkill. In xinput it is too long as "FocaltechPS/2 Focaltech Focaltech Touchpad" In focaltech_report_state() pointer to psmouse->dev is already stored as *dev Signed-off-by: Dmitry Tunin Signed-off-by: Dmitry Torokhov

Input: elantech - add Fujitsu Lifebook E556 to force crc_enabled

2016-10-07T23:30:12Z

Another Lifebook machine that needs the same quirk as other similar models to make the driver working. Also let's reorder elantech_dmi_force_crc_enabled list so LIfebook enries are in alphabetical order. Reported-by: William Linna Tested-by: William Linna Reviewed-by: Benjamin Tissoires Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov

Input: ALPS - set DualPoint flag for 74 03 28 devices

2016-10-04T18:47:01Z

Here we introduce logic in alps_identify to set the ALPS_DUALPOINT flag for touchpad hardware responding to E7 report with 73 03 28, as is found in the Dell Latitude E7470. Tested-by: Michal Hocko Signed-off-by: Ben Gamari Signed-off-by: Dmitry Torokhov

Input: ALPS - allow touchsticks to report pressure

2016-10-04T18:46:54Z

The SS5 hardware can report this. Tested-by: Michal Hocko Signed-off-by: Ben Gamari Signed-off-by: Dmitry Torokhov

Input: ALPS - handle 0-pressure 1F events

2016-10-04T18:46:51Z

While a button is held SS5 hardware will give us single-finger packets with x, y, and pressure equal to zero. This causes annoying jumps in pointer position if a touch is released while the button is held. Handle this by claiming zero contacts to ensure that no position events are provided to the user. Reviewed-by: Pali Rohár Tested-by: Michal Hocko Signed-off-by: Ben Gamari Signed-off-by: Dmitry Torokhov

Input: ALPS - add touchstick support for SS5 hardware

2016-10-04T18:46:41Z

Add touchstick support for the so-called SS5 hardware, which uses a variant of the SS4 protocol. Reviewed-by: Pali Rohár Tested-by: Michal Hocko Signed-off-by: Ben Gamari Signed-off-by: Dmitry Torokhov

Input: elantech - force needed quirks on Fujitsu H760

2016-10-04T00:31:57Z

Just like Fujitsu CELSIUS H730, the H760 also has an Elantech touchpad with the same quirks. Without this patch, the touchpad is useless out-of-the-box as the mouse pointer won't move. This patch makes the driver aware of both the crc_enabled=1 requirement and the middle button, making the touchpad fully functional out-of-the-box. Signed-off-by: Matti Kurkela Cc: stable@vger.kernel.org Signed-off-by: Dmitry Torokhov

Input: elantech - fix Lenovo version typo

2016-10-04T00:28:58Z

Signed-off-by: Marcos Paulo de Souza Reviewed-by: Ulrik De Bie Signed-off-by: Dmitry Torokhov

Input: elan_i2c - fix return tests of i2c_smbus_read_block_data()

2016-10-03T23:41:00Z

i2c_smbus_read_block_data() returns negative errno else the number of data bytes in the slave's response. Checking for error not null means the function always fails if the device answers properly. So given that we read 3 bytes and access those, better check that we actually read those 3 bytes. Signed-off-by: Benjamin Tissoires Signed-off-by: Dmitry Torokhov