1/* linux/include/asm-arm/arch-s3c2410/hardware.h 2 * 3 * Copyright (c) 2003 Simtec Electronics 4 * Ben Dooks <ben@simtec.co.uk> 5 * 6 * S3C2410 - hardware 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License version 2 as 10 * published by the Free Software Foundation. 11*/ 12 13#ifndef __ASM_ARCH_HARDWARE_H 14#define __ASM_ARCH_HARDWARE_H 15 16#ifndef __ASM_HARDWARE_H 17#error "Do not include this directly, instead #include <asm/hardware.h>" 18#endif 19 20#ifndef __ASSEMBLY__ 21 22/* external functions for GPIO support 23 * 24 * These allow various different clients to access the same GPIO 25 * registers without conflicting. If your driver only owns the entire 26 * GPIO register, then it is safe to ioremap/__raw_{read|write} to it. 27*/ 28 29/* s3c2410_gpio_cfgpin 30 * 31 * set the configuration of the given pin to the value passed. 32 * 33 * eg: 34 * s3c2410_gpio_cfgpin(S3C2410_GPA0, S3C2410_GPA0_ADDR0); 35 * s3c2410_gpio_cfgpin(S3C2410_GPE8, S3C2410_GPE8_SDDAT1); 36*/ 37 38extern void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function); 39 40extern unsigned int s3c2410_gpio_getcfg(unsigned int pin); 41 42/* s3c2410_gpio_getirq 43 * 44 * turn the given pin number into the corresponding IRQ number 45 * 46 * returns: 47 * < 0 = no interrupt for this pin 48 * >=0 = interrupt number for the pin 49*/ 50 51extern int s3c2410_gpio_getirq(unsigned int pin); 52 53#ifdef CONFIG_CPU_S3C2400 54 55extern int s3c2400_gpio_getirq(unsigned int pin); 56 57#endif /* CONFIG_CPU_S3C2400 */ 58 59/* s3c2410_gpio_irqfilter 60 * 61 * set the irq filtering on the given pin 62 * 63 * on = 0 => disable filtering 64 * 1 => enable filtering 65 * 66 * config = S3C2410_EINTFLT_PCLK or S3C2410_EINTFLT_EXTCLK orred with 67 * width of filter (0 through 63) 68 * 69 * 70*/ 71 72extern int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on, 73 unsigned int config); 74 75/* s3c2410_gpio_pullup 76 * 77 * configure the pull-up control on the given pin 78 * 79 * to = 1 => disable the pull-up 80 * 0 => enable the pull-up 81 * 82 * eg; 83 * 84 * s3c2410_gpio_pullup(S3C2410_GPB0, 0); 85 * s3c2410_gpio_pullup(S3C2410_GPE8, 0); 86*/ 87 88extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to); 89 90extern void s3c2410_gpio_setpin(unsigned int pin, unsigned int to); 91 92extern unsigned int s3c2410_gpio_getpin(unsigned int pin); 93 94extern unsigned int s3c2410_modify_misccr(unsigned int clr, unsigned int chg); 95 96#ifdef CONFIG_CPU_S3C2440 97 98extern int s3c2440_set_dsc(unsigned int pin, unsigned int value); 99 100#endif /* CONFIG_CPU_S3C2440 */ 101 102 103#endif /* __ASSEMBLY__ */ 104 105#include <asm/sizes.h> 106#include <asm/arch/map.h> 107 108/* machine specific hardware definitions should go after this */ 109 110/* currently here until moved into config (todo) */ 111#define CONFIG_NO_MULTIWORD_IO 112 113#endif /* __ASM_ARCH_HARDWARE_H */ 114