projects / 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 <[email protected]> | |
| 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> | |
| 7987bd7a | 19 | #include <linux/gpio.h> |
| 67d729ad BD |
20 | |
| 21 | #include <asm/mach/arch.h> | |
| 22 | #include <asm/mach/map.h> | |
| 23 | ||
| a09e64fb | 24 | #include <mach/regs-gpio.h> |
| a09e64fb | 25 | #include <mach/hardware.h> |
| 67d729ad | 26 | |
| 7987bd7a BD |
27 | #include <plat/gpio-core.h> |
| 28 | ||
| 67d729ad BD |
29 | int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state) |
| 30 | { | |
| 7987bd7a BD |
31 | struct s3c_gpio_chip *chip = s3c_gpiolib_getchip(pin); |
| 32 | unsigned long offs = pin - chip->chip.base; | |
| 67d729ad BD |
33 | unsigned long flags; |
| 34 | unsigned long slpcon; | |
| 35 | ||
| 36 | offs *= 2; | |
| 37 | ||
| 2c8fcfbf | 38 | if (pin < S3C2410_GPB(0)) |
| 67d729ad BD |
39 | return -EINVAL; |
| 40 | ||
| 2c8fcfbf BD |
41 | if (pin >= S3C2410_GPF(0) && |
| 42 | pin <= S3C2410_GPG(16)) | |
| 67d729ad BD |
43 | return -EINVAL; |
| 44 | ||
| 2c8fcfbf | 45 | if (pin > S3C2410_GPH(16)) |
| 67d729ad BD |
46 | return -EINVAL; |
| 47 | ||
| 48 | local_irq_save(flags); | |
| 49 | ||
| 7987bd7a | 50 | slpcon = __raw_readl(chip->base + 0x0C); |
| 67d729ad BD |
51 | |
| 52 | slpcon &= ~(3 << offs); | |
| 53 | slpcon |= state << offs; | |
| 54 | ||
| 7987bd7a | 55 | __raw_writel(slpcon, chip->base + 0x0C); |
| 67d729ad BD |
56 | |
| 57 | local_irq_restore(flags); | |
| 58 | ||
| 59 | return 0; | |
| 60 | } | |
| 61 | ||
| 62 | EXPORT_SYMBOL(s3c2412_gpio_set_sleepcfg); |