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FMC Bus
Commit 29f077e4 authored by Alessandro Rubini's avatar Alessandro Rubini
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doc and header: portability docs and fix 

Signed-off-by: Alessandro Rubini's avatarAlessandro Rubini <rubini@gnudd.com>
parent ece4856b
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doc/fmc-bus.in
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......@@ -1011,7 +1011,18 @@ checkout from when it is a submodule.
As the last bits are fixed I'll update this chapter, and I'll remove
this section when everything is verified by a larger user base.
@c ##########################################################################
@node Portability
@chapter Portability
This package should be portable. However I didn't test it on a wide
variety of system. I used it on a 32-bit x86 host, running version 2.6.32
and 3.4 of the kernel.
I verified that it compiles without any warning from version 2.6.27 up
to 3.5, on a 32-bit x86 processor. On 2.6.26 it fails for changes in
the Linux device structures. On 2.6.25 and earlier it fails much more
badly.
@bye
@c LocalWords: gnudd titlepage iftex texinfo CERN documentlanguage settitle
......
kernel/include/linux/fmc.h
View file @ 29f077e4
......@@ -80,6 +80,14 @@ struct fmc_gpio {
#define FMC_GPIO_USER(x) ((x) + 0x1400) /* 256 of them */
/* We may add SCL and SDA, or other roles if the need arises */
/* GPIOF_DIR_IN etc are missing before 3.0. copy from <linux/gpio.h> */
#ifndef GPIOF_DIR_IN
# define GPIOF_DIR_OUT (0 << 0)
# define GPIOF_DIR_IN (1 << 0)
# define GPIOF_INIT_LOW (0 << 1)
# define GPIOF_INIT_HIGH (1 << 1)
#endif
/*
* The operations are offered by each carrier and should make driver
* design completely independent of th carrier. Named GPIO pins may be
......
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