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path: root/include/linux/of_gpio.h
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* of/gpio: Implement of_gpio_count()Anton Vorontsov2008-12-211-0/+6
| | | | | | | | This function is used to count how many GPIOs are specified for a device node. Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* of/gpio: Implement of_get_gpio_flags()Anton Vorontsov2008-12-031-4/+34
| | | | | | | | | | | | | | 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 <avorontsov@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* of_gpio: Should use new <linux/gpio.h> headerWolfgang Grandegger2008-07-221-1/+1
| | | | | | | | | | | | Since commit 7560fa60fcdcdb0da662f6a9fad9064b554ef46c (gpio: <linux/gpio.h> and "no GPIO support here" stubs) drivers can use GPIOs if they're available, but don't require them. This patch actually enables this feature. Signed-off-by: Wolfgang Grandegger <wg@grandegger.com> Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* [POWERPC] OF helpers for the GPIO APIAnton Vorontsov2008-04-171-0/+69
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 <avorontsov@ru.mvista.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Paul Mackerras <paulus@samba.org>