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); |