linux.git/drivers/input/touchscreen, branch v4.14-rc4

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

2017-09-16T18:24:26+00:00

Pull more input updates from Dmitry Torokhov:
 "A second round of updates for the input subsystem:

   - a new driver for PWM-controlled vibrators

   - ucb1400 touchscreen driver had completely busted suspend/resume
     handling

   - we now handle "home" button found on some devices with Goodix
     touchscreens

   - assorted other fixups"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: i8042 - add Gigabyte P57 to the keyboard reset table
  Input: xpad - validate USB endpoint type during probe
  Input: ucb1400_ts - fix suspend and resume handling
  Input: edt-ft5x06 - fix access to non-existing register
  Input: elantech - make arrays debounce_packet static, reduces object code size
  Input: surface3_spi - make const array header static, reduces object code size
  Input: goodix - add support for capacitive home button
  Input: add a driver for PWM controllable vibrators
  Input: adi - make array seq static, reduces object code size

dmi: Mark all struct dmi_system_id instances const

2017-09-14T09:59:30+00:00

... and __initconst if applicable.

Based on similar work for an older kernel in the Grsecurity patch.

[JD: fix toshiba-wmi build]
[JD: add htcpen]
[JD: move __initconst where checkscript wants it]

Signed-off-by: Christoph Hellwig 
Signed-off-by: Jean Delvare

Input: ucb1400_ts - fix suspend and resume handling

2017-09-11T21:23:56+00:00

Instead of stopping the touchscreen we were starting it in suspend, and
disabling it in resume.

Fixes: c899afedf168 ("Input: ucb1400_ts - convert to threaded IRQ")
Reported-by: Anton Volkov 
Signed-off-by: Dmitry Torokhov

Input: edt-ft5x06 - fix access to non-existing register

2017-09-11T21:23:41+00:00

reg_addr->reg_report_rate is supposed to exist in M06, not M09.

The driver is written to skip avoids access to non-existing registers
when the register address is NO_REGISTER (0xff). But
reg_addr->reg_report_rate is initialized to 0x00 by devm_kzalloc() (in
edt_ft5x06_ts_probe()) and not changed thereafter. So the checks do
not work and an access to register 0x00 is done.

Fix by setting reg_addr->reg_report_rate to NO_REGISTER.

Also fix the only place where reg_report_rate is checked against zero
instead of NO_REGISTER.

Signed-off-by: Luca Ceresoli 
Signed-off-by: Dmitry Torokhov

Input: surface3_spi - make const array header static, reduces object code size

2017-09-11T21:23:39+00:00

Don't populate the const array header on the stack, instead make it
static.  Makes the object code smaller by over 180 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
   6003	   1536	      0	   7539	   1d73	surface3_spi.o

After:
   text	   data	    bss	    dec	    hex	filename
   5726	   1632	      0	   7358	   1cbe	surface3_spi.o

Signed-off-by: Colin Ian King 
Signed-off-by: Dmitry Torokhov

Input: goodix - add support for capacitive home button

2017-09-11T21:23:15+00:00

On some x86 tablets with a Goodix touchscreen, the Windows logo on the
front is a capacitive home button. Touching this button results in a touch
with bit 4 of the first byte set, while only the lower 4 bits (0-3) are
used to indicate the number of touches.

Report a KEY_LEFTMETA press when this happens.

Note that the hardware might support more than one button, in which
case the "id" byte of coor_data would identify the button in question.
This is not implemented as we don't have access to hardware with
multiple buttons.

Signed-off-by: Sergei A. Trusov 
Acked-by: Bastien Nocera 
Signed-off-by: Dmitry Torokhov

Input: atmel_mxt_ts - add support for reset line

2017-08-21T20:10:19+00:00

Provide support for controlling reset pin. If this is not driven
correctly the device will be held in reset and will not respond.

Acked-by: Rob Herring 
Signed-off-by: Sebastian Reichel 
Signed-off-by: Dmitry Torokhov

Input: atmel_mxt_ts - use more managed resources

2017-08-21T20:10:18+00:00

Switch mxt_data and interrupt to resource managed allocation methods,
which cleans up the driver slightly and prepares for adding
reset GPIO support.

Signed-off-by: Sebastian Reichel 
Signed-off-by: Dmitry Torokhov

Input: wacom_w8001 - constify serio_device_id

2017-08-19T00:15:41+00:00

serio_device_id are not supposed to change at runtime. All functions
working with serio_device_id provided by  work with
const serio_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav 
Signed-off-by: Dmitry Torokhov

Input: tsc40 - constify serio_device_id

2017-08-19T00:15:40+00:00

serio_device_id are not supposed to change at runtime. All functions
working with serio_device_id provided by  work with
const serio_device_id. So mark the non-const structs as const.

Signed-off-by: Arvind Yadav 
Signed-off-by: Dmitry Torokhov