GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-07-23 07:12:09 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

[PATCH] chardev: GPIO for SCx200 & PC-8736x: add gpio-ops vtable

Browse source 
Abstract the gpio operations into a new nsc_gpio_ops vtable.

Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Jim Cromie 2006-06-27 02:54:18 -07:00 • committed by Linus Torvalds
parent 9b170b8fdb
commit fe3a168a2c
2 changed files with 46 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

33
include/linux/nsc_gpio.h Normal file
View file

@ -0,0 +1,33 @@
/**
nsc_gpio.c
National Semiconductor GPIO common access methods.
struct nsc_gpio_ops abstracts the low-level access
operations for the GPIO units on 2 NSC chip families; the GEODE
integrated CPU, and the PC-8736[03456] integrated PC-peripheral
chips.
The GPIO units on these chips have the same pin architecture, but
the access methods differ. Thus, scx200_gpio and pc8736x_gpio
implement their own versions of these routines; and use the common
file-operations routines implemented in nsc_gpio module.
Copyright (c) 2005 Jim Cromie <jim.cromie@gmail.com>
NB: this work was tested on the Geode SC-1100 and PC-87366 chips.
NSC sold the GEODE line to AMD, and the PC-8736x line to Winbond.
*/
struct nsc_gpio_ops {
struct module* owner;
u32 (*gpio_config) (unsigned iminor, u32 mask, u32 bits);
void (*gpio_dump) (unsigned iminor);
int (*gpio_get) (unsigned iminor);
void (*gpio_set) (unsigned iminor, int state);
void (*gpio_set_high)(unsigned iminor);
void (*gpio_set_low) (unsigned iminor);
void (*gpio_change) (unsigned iminor);
int (*gpio_current) (unsigned iminor);
};