projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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); |