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67d729ad BD |
1 | /* linux/arch/arm/mach-s3c2412/gpio.c |
2 | * | |
3 | * Copyright (c) 2007 Simtec Electronics | |
4 | * Ben Dooks <ben@simtec.co.uk> | |
5 | * | |
6 | * http://armlinux.simtec.co.uk/. | |
7 | * | |
8 | * S3C2412/S3C2413 specific GPIO support | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | */ | |
14 | ||
15 | #include <linux/kernel.h> | |
16 | #include <linux/types.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/interrupt.h> | |
19 | ||
20 | #include <asm/mach/arch.h> | |
21 | #include <asm/mach/map.h> | |
22 | ||
a09e64fb | 23 | #include <mach/regs-gpio.h> |
67d729ad | 24 | |
a09e64fb | 25 | #include <mach/hardware.h> |
67d729ad BD |
26 | |
27 | int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state) | |
28 | { | |
29 | void __iomem *base = S3C24XX_GPIO_BASE(pin); | |
30 | unsigned long offs = S3C2410_GPIO_OFFSET(pin); | |
31 | unsigned long flags; | |
32 | unsigned long slpcon; | |
33 | ||
34 | offs *= 2; | |
35 | ||
36 | if (pin < S3C2410_GPIO_BANKB) | |
37 | return -EINVAL; | |
38 | ||
39 | if (pin >= S3C2410_GPIO_BANKF && | |
40 | pin <= S3C2410_GPIO_BANKG) | |
41 | return -EINVAL; | |
42 | ||
43 | if (pin > (S3C2410_GPIO_BANKH + 32)) | |
44 | return -EINVAL; | |
45 | ||
46 | local_irq_save(flags); | |
47 | ||
48 | slpcon = __raw_readl(base + 0x0C); | |
49 | ||
50 | slpcon &= ~(3 << offs); | |
51 | slpcon |= state << offs; | |
52 | ||
53 | __raw_writel(slpcon, base + 0x0C); | |
54 | ||
55 | local_irq_restore(flags); | |
56 | ||
57 | return 0; | |
58 | } | |
59 | ||
60 | EXPORT_SYMBOL(s3c2412_gpio_set_sleepcfg); |