kernel_optimize_test/drivers
Alberto Panizzo 76cdc083f4 Input: add imx-keypad driver to support the IMX Keypad Port
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: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-01-31 17:52:57 -08:00
..
accessibility
acpi Merge branch 'bugzilla-14954' into release 2010-01-20 01:26:22 -05:00
amba
ata libata: retry FS IOs even if it has failed with AC_ERR_INVALID 2010-01-20 14:25:11 -05:00
atm
auxdisplay
base Revert "sysdev: fix prototype for memory_sysdev_class show/store functions" 2010-01-20 15:02:13 -08:00
block drbd: Allow online resizing of DRBD devices while peer not reachable (needs to be explicitly forced) 2010-01-12 10:02:46 +01:00
bluetooth Bluetooth: Prevent ill-timed autosuspend in USB driver 2009-12-17 12:12:49 -08:00
cdrom
char Input: Mac button emulation - implement as an input filter 2010-01-30 01:47:49 -08:00
clocksource
connector
cpufreq
cpuidle drivers/cpuidle/governors/menu.c: fix undefined reference to `__udivdi3' 2010-01-11 09:34:07 -08:00
crypto
dca
dio
dma Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx 2009-12-30 13:46:29 -08:00
edac edac: i5000_edac critical fix panic out of bounds 2010-01-16 12:15:38 -08:00
eisa
firewire firewire, ieee1394: update Kconfig help 2009-12-29 19:58:17 +01:00
firmware
gpio gpio: adp5588-gpio: new driver for ADP5588 GPIO expanders 2010-01-11 09:34:07 -08:00
gpu Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel 2010-01-16 10:44:38 -08:00
hid Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid 2010-01-13 16:10:13 -08:00
hwmon Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging 2010-01-11 09:45:55 -08:00
i2c i2c: Do not use device name after device_unregister 2010-01-16 20:43:13 +01:00
ide
idle cpumask: convert drivers/idle/i7300_idle.c to cpumask_var_t 2009-12-17 11:43:25 +10:30
ieee1394 firewire, ieee1394: update Kconfig help 2009-12-29 19:58:17 +01:00
ieee802154
infiniband Merge branches 'misc' and 'mlx4' into for-next 2010-01-06 13:16:47 -08:00
input Input: add imx-keypad driver to support the IMX Keypad Port 2010-01-31 17:52:57 -08:00
isdn Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2010-01-12 20:53:29 -08:00
leds leds: leds-pwm: Set led_classdev max_brightness 2009-12-17 11:42:34 +00:00
lguest lguest: fix bug in setting guest GDT entry 2010-01-04 12:33:33 -08:00
macintosh Input: Mac button emulation - allow compiling as a module 2010-01-30 01:48:03 -08:00
mca
md DM: Fix device mapper topology stacking 2010-01-11 14:29:20 +01:00
media Merge branch 'mantis' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6 2010-01-18 14:07:07 -08:00
memstick
message i2o: propogate the BKL down into the ioctl method 2010-01-04 12:31:21 -08:00
mfd mfd: Unlock mc13783 before subsystems initialisation, at probe time. 2010-01-18 12:30:28 +01:00
misc Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6 2009-12-17 16:38:48 -08:00
mmc mfd: tmio_mmc hardware abstraction for CNF area 2010-01-18 12:30:27 +01:00
mtd Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus 2009-12-17 16:38:06 -08:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2010-01-14 08:36:15 -08:00
nubus
of
oprofile
parisc
parport parport_pc.c: use correct length in strncmp 2009-12-16 07:20:12 -08:00
pci PCIe AER: prevent AER injection if hardware masks error reporting 2010-01-04 15:52:49 -08:00
pcmcia Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 2009-12-30 13:13:24 -08:00
platform Merge branch 'misc' into release 2010-01-20 01:23:27 -05:00
pnp Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 2009-12-16 12:33:19 -08:00
power pmu_battery: Fix battery full reporting 2009-12-18 03:51:29 +03:00
pps
ps3
rapidio
regulator regulator: wm831x_reg_read() failure unnoticed in wm831x_aldo_get_mode() 2009-12-17 10:27:30 +00:00
rtc rtc_cmos: convert shutdown to new pnp_driver->shutdown 2010-01-11 09:34:07 -08:00
s390 [S390] tape_char: add missing compat_ptr conversion 2010-01-13 20:44:46 +01:00
sbus bbc_envctrl: Clean up properly if kthread_run() fails. 2010-01-04 15:31:10 -08:00
scsi [SCSI] megaraid_sas: remove sysfs poll_mode_io world writeable permissions 2010-01-12 21:12:36 -08:00
serial serial: serial_cs: oxsemi quirk breaks resume 2010-01-20 15:03:31 -08:00
sfi
sh
sn
spi Merge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6 2009-12-17 15:59:05 -08:00
ssb
staging Staging: hv: fix smp problems in the hyperv core code 2010-01-20 15:05:26 -08:00
tc
telephony
thermal Merge branch 'misc-2.6.33' into release 2009-12-16 14:22:32 -05:00
uio
usb USB: isp1362: fix build failure on ARM systems via irq_flags cleanup 2010-01-20 15:24:36 -08:00
uwb
video revert "drivers/video/s3c-fb.c: fix clock setting for Samsung SoC Framebuffer" 2010-01-16 12:15:40 -08:00
virtio virtio: fix section mismatch warnings 2010-01-16 12:15:39 -08:00
vlynq
w1
watchdog [WATCHDOG] iTCO_wdt: Add Intel Cougar Point and PCH DeviceIDs 2010-01-18 21:39:49 +00:00
xen xen: fix hang on suspend. 2010-01-13 10:01:35 +00:00
zorro
Kconfig firewire, ieee1394: update Kconfig help 2009-12-29 19:58:17 +01:00
Makefile