projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 72edd84a LB |
1 | /* |
| 2 | * arch/arm/plat-iop/gpio.c | |
| 3 | * GPIO handling for Intel IOP3xx processors. | |
| 4 | * | |
| 5 | * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org> | |
| 6 | * | |
| 7 | * This program is free software; you can redistribute it and/or modify | |
| 8 | * it under the terms of the GNU General Public License as published by | |
| 9 | * the Free Software Foundation; either version 2 of the License, or (at | |
| 10 | * your option) any later version. | |
| 11 | */ | |
| 12 | ||
| 6d125412 AS |
13 | #include <linux/err.h> |
| 14 | #include <linux/module.h> | |
| 15 | #include <linux/gpio/driver.h> | |
| 7b85b867 | 16 | #include <linux/platform_device.h> |
| f6ffa5ee | 17 | |
| 6d125412 AS |
18 | #define IOP3XX_GPOE 0x0000 |
| 19 | #define IOP3XX_GPID 0x0004 | |
| 20 | #define IOP3XX_GPOD 0x0008 | |
| 63f385cd | 21 | |
| 7b85b867 | 22 | static int iop3xx_gpio_probe(struct platform_device *pdev) |
| 63f385cd | 23 | { |
| 7b85b867 | 24 | struct resource *res; |
| 6d125412 AS |
25 | struct gpio_chip *gc; |
| 26 | void __iomem *base; | |
| 27 | int err; | |
| 28 | ||
| 29 | gc = devm_kzalloc(&pdev->dev, sizeof(*gc), GFP_KERNEL); | |
| 30 | if (!gc) | |
| 31 | return -ENOMEM; | |
| 7b85b867 LW |
32 | |
| 33 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
| e34ca9de | 34 | base = devm_ioremap_resource(&pdev->dev, res); |
| 138d876e BZ |
35 | if (IS_ERR(base)) |
| 36 | return PTR_ERR(base); | |
| 7b85b867 | 37 | |
| 6d125412 AS |
38 | err = bgpio_init(gc, &pdev->dev, 1, base + IOP3XX_GPID, |
| 39 | base + IOP3XX_GPOD, NULL, NULL, base + IOP3XX_GPOE, 0); | |
| 40 | if (err) | |
| 41 | return err; | |
| 42 | ||
| 43 | gc->base = 0; | |
| 44 | gc->owner = THIS_MODULE; | |
| 45 | ||
| 46 | return devm_gpiochip_add_data(&pdev->dev, gc, NULL); | |
| 63f385cd | 47 | } |
| 7b85b867 LW |
48 | |
| 49 | static struct platform_driver iop3xx_gpio_driver = { | |
| 50 | .driver = { | |
| 51 | .name = "gpio-iop", | |
| 7b85b867 LW |
52 | }, |
| 53 | .probe = iop3xx_gpio_probe, | |
| 54 | }; | |
| 55 | ||
| 56 | static int __init iop3xx_gpio_init(void) | |
| 57 | { | |
| 58 | return platform_driver_register(&iop3xx_gpio_driver); | |
| 59 | } | |
| 60 | arch_initcall(iop3xx_gpio_init); |