| Ben Dooks | 67d729a | 2008-01-28 13:01:19 +0100 | [diff] [blame] | 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 | |
| 23 | #include <asm/arch/regs-gpio.h> |
| 24 | |
| 25 | #include <asm/hardware.h> |
| 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); |