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  1. 04 2月, 2010 6 次提交
  3. 01 2月, 2010 1 次提交
    • A
      Input: add imx-keypad driver to support the IMX Keypad Port · 76cdc083
      由 Alberto Panizzo 提交于 
      The IMX family of Application Processors is shipped with a Keypad Port
supported by this driver.

The peripheral can control up to an 8x8 matrix key pad where all the
scanning is done via software.  The hardware provides two interrupts:
one for key presses (KDI) and one for all key releases (KRI). There is
also a simple circuit for glitch reduction (said for synchronization)
made by two series of 3 D-latches clocked by the keypad-clock that
stabilize the interrupts sources. KDI and KRI are fired only if the
respective conditions are maintained for at last 4 keypad-clock cycle.

Since those circuits are poor for a correct debounce process (the
keypad-clock frequency is 32K and bounces longer than 94us are not
masked) the driver, when an interrupt arrives, samples the matrix
with a period of 10ms until the readins are stable for
IMX_KEYPAD_SCANS_FOR_STABILITY times (currently set at 3). After
getting stable result appropriate events are sent through the input
stack.

If some keys are maintained pressed, the driver continues to scan
the matrix with a longer period (60ms) to catch possible multiple
key presses without overloading the cpu. This process ends when all
keys are released.

This driver is tested to build in kernel or as a module and follow
the specification of Freescale Application processors:
i.MX25 i.MX27 i.MX31 i.MX35 i.MX51 especially tested on i.MX31.
Signed-off-by: NAlberto Panizzo <maramaopercheseimorto@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
      76cdc083
  5. 30 1月, 2010 2 次提交
    • D
      Input: implement input filters · ef7995f4
      由 Dmitry Torokhov 提交于 
      Sometimes it is desirable to suppress certain events from reaching
input handlers and thus user space. One such example is Mac mouse
button emulation code which catches certain key presses and converts
them into button clicks as if they were emitted by a virtual mouse.
The original key press events should be completely suppressed,
otherwise user space will be confused, and while keyboard driver
does it on its own evdev is blissfully unaware of this arrangement.

This patch adds notion of 'filter' to the standard input handlers,
which may flag event as filtered thus preventing it from reaching
other input handlers. Filters don't (nor will they ever) have a
notion of priority relative to each other, input core will run all
of them first and any one of them may mark event as filtered.

This patch is inspired by similar patch by Matthew Garret but the
implementation and intended usage are quite different.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
      ef7995f4
    • T
      Input: uinput - remove BKL from uinput_open function · 45cdba4d
      由 Thadeu Lima de Souza Cascardo 提交于 
      Commit 87029658 pushed down the BKL
into uinput open function. However, there's nothing that needs locking
in there.
Signed-off-by: NThadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
      45cdba4d
  7. 29 1月, 2010 1 次提交
  9. 25 1月, 2010 2 次提交
  11. 21 1月, 2010 1 次提交
  13. 19 1月, 2010 1 次提交
  15. 13 1月, 2010 4 次提交
  17. 11 1月, 2010 2 次提交
  19. 10 1月, 2010 6 次提交
  21. 07 1月, 2010 3 次提交
  23. 06 1月, 2010 11 次提交