linux.git/drivers/of/gpio.c, branch v2.6.32

of/gpio: Implement of_gpio_count()

2008-12-21T03:21:14+00:00

This function is used to count how many GPIOs are specified for
a device node.

Signed-off-by: Anton Vorontsov 
Signed-off-by: Paul Mackerras

of/gpio: Implement of_get_gpio_flags()

2008-12-03T10:04:05+00:00

This adds a new function, of_get_gpio_flags, which is like
of_get_gpio(), but accepts a new "flags" argument.  This new function
will be used by the drivers that need to retrieve additional GPIO
information, such as active-low flag.

Also, this changes the default ("simple") .xlate routine to warn about
bogus (< 2) #gpio-cells usage: the second cell should always be present
for GPIO flags.

Signed-off-by: Anton Vorontsov 
Signed-off-by: Paul Mackerras

of: Add new helper of_parse_phandles_with_args()

2008-10-12T23:55:47+00:00

The helper is factored out of of_get_gpio(). Will be used by the QE
pin multiplexing functions (they need to parse the gpios = <> too).

Signed-off-by: Anton Vorontsov 
Signed-off-by: Benjamin Herrenschmidt

[POWERPC] of/gpio: Use dynamic base allocation

2008-05-23T05:27:19+00:00

Since the "gpiolib: dynamic gpio number allocation" patch was recently
merged into Linus' tree (commit 8d0aab2f16c4fa170f32e7a74a52cd0122bbafef),
we can use dynamic GPIO base allocation now.

This, in turn, removes number of gpios per chip constraint.

Signed-off-by: Anton Vorontsov 
Signed-off-by: Paul Mackerras

[POWERPC] OF helpers for the GPIO API

2008-04-16T21:46:11+00:00

This implements various helpers to support OF bindings for the GPIO
LIB API.

Previously this was PowerPC specific, but it seems this code isn't
arch-dependent anyhow, so let's place it into of/.

SPARC will not see this addition yet, real hardware seem to not use
GPIOs at all. But this might change:

   http://www.leox.org/docs/faq_MLleon.html

"16-bit I/O port" sounds promising. :-)

Signed-off-by: Anton Vorontsov 
Acked-by: Grant Likely 
Signed-off-by: Paul Mackerras