Andres Salomon 44658a11f3 cs5535-gpio: handle GPIO regs where higher (clear) bits are set ... 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>		2010-12-23 15:31:48 -08:00
..
74x164.c	gpio: add support for 74x164 serial-in/parallel-out 8-bit shift register	2010-10-27 18:03:07 -07:00
adp5520-gpio.c
adp5588-gpio.c	gpio: adp5588-gpio: support interrupt controller	2010-10-27 18:03:07 -07:00
basic_mmio_gpio.c
bt8xxgpio.c
cs5535-gpio.c	cs5535-gpio: handle GPIO regs where higher (clear) bits are set	2010-12-23 15:31:48 -08:00
gpiolib.c	gpiolib: gpio_request_one(): add missing gpio_free()	2010-12-22 19:43:33 -08:00
it8761e_gpio.c
janz-ttl.c
Kconfig	gpio: Add VIA VX855 GPIO driver	2010-10-29 00:29:51 +02:00
langwell_gpio.c	langwell_gpio: add support for whitney point	2010-10-27 18:03:07 -07:00
Makefile	gpio: Add VIA VX855 GPIO driver	2010-10-29 00:29:51 +02:00
max730x.c
max732x.c
max7300.c
max7301.c
mc33880.c
mcp23s08.c
pca953x.c
pcf857x.c
pch_gpio.c	gpio: add Topcliff PCH GPIO driver	2010-10-27 18:03:07 -07:00
pl061.c
rdc321x-gpio.c	gpio: Fix null pointer dereference while accessing rdc321x platform_data	2010-12-22 12:05:20 +01:00
sch_gpio.c
stmpe-gpio.c	gpio: Fix stmpe error path	2010-10-29 00:29:32 +02:00
sx150x.c
tc35892-gpio.c
timbgpio.c	gpio: timbgpio: use a copy of the IER register to avoid it being trashed	2010-10-27 18:03:07 -07:00
twl4030-gpio.c
ucb1400_gpio.c
vr41xx_giu.c
vx855_gpio.c	gpio: Add VIA VX855 GPIO driver	2010-10-29 00:29:51 +02:00
wm831x-gpio.c
wm8350-gpiolib.c
wm8994-gpio.c	gpiolib: Hook up WM8994 gpio_to_irq()	2010-10-29 00:28:39 +02:00
xilinx_gpio.c