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generic GPIO support for the Freescale Coldfire 5206.

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Add support for the 5206.

Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
This commit is contained in:
sfking@fdwdc.com 2009-06-19 18:11:01 -07:00 committed by Greg Ungerer
parent af39bb8b07
commit bc25b057fa
3 changed files with 58 additions and 3 deletions
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10
arch/m68k/include/asm/m5206sim.h
View file

@ -85,9 +85,15 @@
#define MCFSIM_PAR 0xcb /* Pin Assignment reg (r/w) */ #define MCFSIM_PAR 0xcb /* Pin Assignment reg (r/w) */
#endif #endif
#define MCFSIM_PADDR 0x1c5 /* Parallel Direction (r/w) */ #define MCFSIM_PADDR (MCF_MBAR + 0x1c5) /* Parallel Direction (r/w) */
#define MCFSIM_PADAT 0x1c9 /* Parallel Port Value (r/w) */ #define MCFSIM_PADAT (MCF_MBAR + 0x1c9) /* Parallel Port Value (r/w) */
/*
* Generic GPIO
*/
#define MCFGPIO_PIN_MAX 8
#define MCFGPIO_IRQ_VECBASE -1
#define MCFGPIO_IRQ_MAX -1
/* /*
* Some symbol defines for the Parallel Port Pin Assignment Register * Some symbol defines for the Parallel Port Pin Assignment Register
*/ */

2
arch/m68knommu/platform/5206/Makefile
View file

@ -14,5 +14,5 @@
asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1 asflags-$(CONFIG_FULLDEBUG) := -DDEBUGGER_COMPATIBLE_CACHE=1
obj-y := config.o obj-y := config.o gpio.o

49
arch/m68knommu/platform/5206/gpio.c Normal file
View file

@ -0,0 +1,49 @@
/*
* Coldfire generic GPIO support
*
* (C) Copyright 2009, Steven King <sfking@fdwdc.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfgpio.h>
static struct mcf_gpio_chip mcf_gpio_chips[] = {
{
.gpio_chip = {
.label = "PP",
.request = mcf_gpio_request,
.free = mcf_gpio_free,
.direction_input = mcf_gpio_direction_input,
.direction_output = mcf_gpio_direction_output,
.get = mcf_gpio_get_value,
.set = mcf_gpio_set_value,
.ngpio = 8,
},
.pddr = MCFSIM_PADDR,
.podr = MCFSIM_PADAT,
.ppdr = MCFSIM_PADAT,
},
};
static int __init mcf_gpio_init(void)
{
unsigned i = 0;
while (i < ARRAY_SIZE(mcf_gpio_chips))
(void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]);
return 0;
}
core_initcall(mcf_gpio_init);