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Andres Salomon 2ea51982ae cs5535-gpio: handle GPIO regs where higher (clear) bits are set 
commit 44658a11f3 upstream.

The default for non-READ_BACK GPIO regs is to have the clear bits set;
this means that our original errata fix was too simplistic.  This
changes it to the following behavior:

 - when setting GPIOs, ignore the higher order bits (they're for
   clearing, we don't need to care about them).

 - when clearing GPIOs, keep all the bits, but unset (via XOR) the
   lower order bit that negates the clear bit that we care about.  That
   is, if we're clearing GPIO 26 (val = 0x04000000), we first XOR what's
   currently in the register with 0x0400 (GPIO 26's SET bit), and then
   OR that with the GPIO 26's CLEAR bit.

Tested-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2011-01-07 13:58:40 -08:00
..
adp5520-gpio.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
adp5588-gpio.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
bt8xxgpio.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
cs5535-gpio.c cs5535-gpio: handle GPIO regs where higher (clear) bits are set 2011-01-07 13:58:40 -08:00
gpiolib.c gpiolib: allow nested threaded irqs for poll(2) 2010-08-11 08:59:09 -07:00
it8761e_gpio.c drivers/gpio/it8761e_gpio: check return value of gpiochip_remove() 2010-05-27 09:12:42 -07:00
janz-ttl.c gpio: Add support for Janz VMOD-TTL Digital IO module 2010-05-28 01:37:33 +02:00
Kconfig gpio: Add STMPE GPIO driver 2010-08-12 11:27:55 +02:00
langwell_gpio.c gpio: add Penwell gpio support 2010-05-27 09:12:42 -07:00
Makefile gpio: Add STMPE GPIO driver 2010-08-12 11:27:55 +02:00
max730x.c gpio: max730x: make pullups configurable via platformdata 2010-08-11 08:59:08 -07:00
max732x.c gpio: max732x: fix input configuration for open-drain pins 2010-05-27 09:12:41 -07:00
max7300.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
max7301.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mc33880.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
mcp23s08.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pca953x.c gpiolib: make names array and its values const 2010-05-27 09:12:41 -07:00
pcf857x.c pcf857x: support working w/o platform data 2010-08-11 08:59:08 -07:00
pl061.c ARM: Fix section build warnings for AMBA drivers 2010-07-27 10:48:43 +01:00
rdc321x-gpio.c gpio: Fix null pointer dereference while accessing rdc321x platform_data 2011-01-07 13:58:38 -08:00
sch_gpio.c gpio: Fix sch_gpio warning 2010-03-07 22:17:37 +01:00
stmpe-gpio.c gpio: Add STMPE GPIO driver 2010-08-12 11:27:55 +02:00
sx150x.c gpio: sx150x: correct and refine reset-on-probe behavior 2010-09-09 18:57:24 -07:00
tc35892-gpio.c gpio: Add TC35892 GPIO driver 2010-05-28 01:37:43 +02:00
timbgpio.c drivers/gpio/timbgpio.c: add missing unlock 2010-04-07 08:38:02 -07:00
twl4030-gpio.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ucb1400_gpio.c mfd/gpio: add a GPIO interface to the UCB1400 MFD chip driver via gpiolib 2009-09-23 07:39:48 -07:00
vr41xx_giu.c headers: smp_lock.h redux 2009-07-12 12:22:34 -07:00
wm831x-gpio.c gpiolib: Implement set_debounce for WM831x GPIOs 2010-08-12 11:27:57 +02:00
wm8350-gpiolib.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
wm8994-gpio.c Merge branch 'topic/asoc' into for-linus 2010-05-20 12:00:43 +02:00
xilinx_gpio.c of/gpio: add default of_xlate function if device has a node pointer 2010-07-05 16:14:30 -06:00