diff options
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpio/gpio-iop.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-iop.c b/drivers/gpio/gpio-iop.c new file mode 100644 index 000000000..8d62db447 --- /dev/null +++ b/drivers/gpio/gpio-iop.c @@ -0,0 +1,64 @@ +/* + * 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); + +MODULE_DESCRIPTION("GPIO handling for Intel IOP3xx processors"); +MODULE_AUTHOR("Lennert Buytenhek <buytenh@wantstofly.org>"); +MODULE_LICENSE("GPL"); |