linux/drivers/input
Sebastian Andrzej Siewior 7e170c6e4f mfd: ti_am335x_tscadc: Don't read back REG_SE
The purpose of reg_se_cache has been defeated. It should avoid the
read-back of the register to avoid the latency and the fact that the
bits are reset to 0 after the individual conversation took place.

The reason why this is required like this to work, is that read-back of
the register removes the bits of the ADC so they do not start another
conversation after the register is re-written from the TSC side for the
update.
To avoid the not required read-back I introduce a "set once" variant which
does not update the cache mask. After the conversation completes, the
bit is removed from the SE register anyway and we don't plan a new
conversation "any time soon". The current set function is renamed to
set_cache to distinguish the two operations.
This is a small preparation for a larger sync-rework.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2014-01-07 08:41:15 +00:00
..
gameport input: gameport: convert bus code to use dev_groups 2013-10-19 20:02:44 -07:00
joystick Linux 3.11 2013-09-18 07:58:33 -07:00
keyboard Merge branch 'next' into for-linus 2013-11-14 17:38:05 -08:00
misc Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2013-11-15 16:43:53 -08:00
mouse Revert "Input: ALPS - add support for model found on Dell XT2" 2013-11-14 17:36:42 -08:00
serio Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-11-15 16:47:22 -08:00
tablet Merge branch 'next' into for-linus 2013-11-14 17:38:05 -08:00
touchscreen mfd: ti_am335x_tscadc: Don't read back REG_SE 2014-01-07 08:41:15 +00:00
apm-power.c Input: random formatting fixes 2012-08-21 22:29:49 -07:00
evbug.c
evdev.c Input: evdev - fall back to vmalloc for client event buffer 2013-10-31 08:45:42 -07:00
ff-core.c Input: random formatting fixes 2012-08-21 22:29:49 -07:00
ff-memless.c Input: random formatting fixes 2012-08-21 22:29:49 -07:00
input-compat.c compat: Use COMPAT_USE_64BIT_TIME in the input subsystem 2012-02-20 12:48:47 -08:00
input-compat.h compat: Use COMPAT_USE_64BIT_TIME in the input subsystem 2012-02-20 12:48:47 -08:00
input-mt.c Input: MT - handle semi-mt devices in core 2013-04-07 21:02:32 -07:00
input-polldev.c
input.c Merge branch 'next' into for-linus 2013-11-14 17:38:05 -08:00
joydev.c Input: fix use-after-free introduced with dynamic minor changes 2012-10-22 08:50:37 +03:00
Kconfig Input: mousedev - allow disabling even without CONFIG_EXPERT 2013-10-31 08:46:07 -07:00
Makefile Input: matrix-keymap - uninline and prepare for device tree support 2012-05-10 22:38:47 -07:00
matrix-keymap.c input: Export matrix_keypad_parse_of_params() 2013-04-19 00:31:13 +02:00
mousedev.c Input: mousedev - move /dev/input/mice to the correct minor 2012-11-18 23:15:16 -08:00
sparse-keymap.c Input: random formatting fixes 2012-08-21 22:29:49 -07:00