arch/arm/mach-s3c2410/include/mach/hardware.h

   1 /* arch/arm/mach-s3c2410/include/mach/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 __ASSEMBLY__
  17
  18 /* external functions for GPIO support
  19  *
  20  * These allow various different clients to access the same GPIO
  21  * registers without conflicting. If your driver only owns the entire
  22  * GPIO register, then it is safe to ioremap/__raw_{read|write} to it.
  23 */
  24
  25 /* s3c2410_gpio_cfgpin
  26  *
  27  * set the configuration of the given pin to the value passed.
  28  *
  29  * eg:
  30  *    s3c2410_gpio_cfgpin(S3C2410_GPA0, S3C2410_GPA0_ADDR0);
  31  *    s3c2410_gpio_cfgpin(S3C2410_GPE8, S3C2410_GPE8_SDDAT1);
  32 */
  33
  34 extern void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function);
  35
  36 extern unsigned int s3c2410_gpio_getcfg(unsigned int pin);
  37
  38 /* s3c2410_gpio_getirq
  39  *
  40  * turn the given pin number into the corresponding IRQ number
  41  *
  42  * returns:
  43  *      < 0 = no interrupt for this pin
  44  *      >=0 = interrupt number for the pin
  45 */
  46
  47 extern int s3c2410_gpio_getirq(unsigned int pin);
  48
  49 /* s3c2410_gpio_irq2pin
  50  *
  51  * turn the given irq number into the corresponding GPIO number
  52  *
  53  * returns:
  54  *      < 0 = no pin
  55  *      >=0 = gpio pin number
  56 */
  57
  58 extern int s3c2410_gpio_irq2pin(unsigned int irq);
  59
  60 #ifdef CONFIG_CPU_S3C2400
  61
  62 extern int s3c2400_gpio_getirq(unsigned int pin);
  63
  64 #endif /* CONFIG_CPU_S3C2400 */
  65
  66 /* s3c2410_gpio_irqfilter
  67  *
  68  * set the irq filtering on the given pin
  69  *
  70  * on = 0 => disable filtering
  71  *      1 => enable filtering
  72  *
  73  * config = S3C2410_EINTFLT_PCLK or S3C2410_EINTFLT_EXTCLK orred with
  74  *          width of filter (0 through 63)
  75  *
  76  *
  77 */
  78
  79 extern int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on,
  80                                   unsigned int config);
  81
  82 /* s3c2410_gpio_pullup
  83  *
  84  * configure the pull-up control on the given pin
  85  *
  86  * to = 1 => disable the pull-up
  87  *      0 => enable the pull-up
  88  *
  89  * eg;
  90  *
  91  *   s3c2410_gpio_pullup(S3C2410_GPB0, 0);
  92  *   s3c2410_gpio_pullup(S3C2410_GPE8, 0);
  93 */
  94
  95 extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to);
  96
  97 /* s3c2410_gpio_getpull
  98  *
  99  * Read the state of the pull-up on a given pin
 100  *
 101  * return:
 102  *      < 0 => error code
 103  *        0 => enabled
 104  *        1 => disabled
 105 */
 106
 107 extern int s3c2410_gpio_getpull(unsigned int pin);
 108
 109 extern void s3c2410_gpio_setpin(unsigned int pin, unsigned int to);
 110
 111 extern unsigned int s3c2410_gpio_getpin(unsigned int pin);
 112
 113 extern unsigned int s3c2410_modify_misccr(unsigned int clr, unsigned int chg);
 114
 115 #ifdef CONFIG_CPU_S3C2440
 116
 117 extern int s3c2440_set_dsc(unsigned int pin, unsigned int value);
 118
 119 #endif /* CONFIG_CPU_S3C2440 */
 120
 121 #ifdef CONFIG_CPU_S3C2412
 122
 123 extern int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state);
 124
 125 #endif /* CONFIG_CPU_S3C2412 */
 126
 127 #endif /* __ASSEMBLY__ */
 128
 129 #include <asm/sizes.h>
 130 #include <mach/map.h>
 131
 132 /* machine specific hardware definitions should go after this */
 133
 134 #endif /* __ASM_ARCH_HARDWARE_H */