forked from mirrors/linux
6d125412fc
This patch switches the driver to use the generic GPIO MMIO functions that removes a bit of redundant and duplicate code. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
60 lines
1.4 KiB
C
60 lines
1.4 KiB
C
/*
|
|
* arch/arm/plat-iop/gpio.c
|
|
* GPIO handling for Intel IOP3xx processors.
|
|
*
|
|
* Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
|
|
*
|
|
* 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; either version 2 of the License, or (at
|
|
* your option) any later version.
|
|
*/
|
|
|
|
#include <linux/err.h>
|
|
#include <linux/module.h>
|
|
#include <linux/gpio/driver.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#define IOP3XX_GPOE 0x0000
|
|
#define IOP3XX_GPID 0x0004
|
|
#define IOP3XX_GPOD 0x0008
|
|
|
|
static int iop3xx_gpio_probe(struct platform_device *pdev)
|
|
{
|
|
struct resource *res;
|
|
struct gpio_chip *gc;
|
|
void __iomem *base;
|
|
int err;
|
|
|
|
gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL);
|
|
if (!gc)
|
|
return -ENOMEM;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
base = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(base))
|
|
return PTR_ERR(base);
|
|
|
|
err = bgpio_init(gc, &pdev->dev, 1, base + IOP3XX_GPID,
|
|
base + IOP3XX_GPOD, NULL, NULL, base + IOP3XX_GPOE, 0);
|
|
if (err)
|
|
return err;
|
|
|
|
gc->base = 0;
|
|
gc->owner = THIS_MODULE;
|
|
|
|
return devm_gpiochip_add_data(&pdev->dev, gc, NULL);
|
|
}
|
|
|
|
static struct platform_driver iop3xx_gpio_driver = {
|
|
.driver = {
|
|
.name = "gpio-iop",
|
|
},
|
|
.probe = iop3xx_gpio_probe,
|
|
};
|
|
|
|
static int __init iop3xx_gpio_init(void)
|
|
{
|
|
return platform_driver_register(&iop3xx_gpio_driver);
|
|
}
|
|
arch_initcall(iop3xx_gpio_init);
|