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

   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
  38 extern void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function);
  39
  40 extern 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
  51 extern int s3c2410_gpio_getirq(unsigned int pin);
  52
  53 /* s3c2410_gpio_irq2pin
  54  *
  55  * turn the given irq number into the corresponding GPIO number
  56  *
  57  * returns:
  58  *      < 0 = no pin
  59  *      >=0 = gpio pin number
  60 */
  61
  62 extern int s3c2410_gpio_irq2pin(unsigned int irq);
  63
  64 #ifdef CONFIG_CPU_S3C2400
  65
  66 extern int s3c2400_gpio_getirq(unsigned int pin);
  67
  68 #endif /* CONFIG_CPU_S3C2400 */
  69
  70 /* s3c2410_gpio_irqfilter
  71  *
  72  * set the irq filtering on the given pin
  73  *
  74  * on = 0 => disable filtering
  75  *      1 => enable filtering
  76  *
  77  * config = S3C2410_EINTFLT_PCLK or S3C2410_EINTFLT_EXTCLK orred with
  78  *          width of filter (0 through 63)
  79  *
  80  *
  81 */
  82
  83 extern int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on,
  84                                   unsigned int config);
  85
  86 /* s3c2410_gpio_pullup
  87  *
  88  * configure the pull-up control on the given pin
  89  *
  90  * to = 1 => disable the pull-up
  91  *      0 => enable the pull-up
  92  *
  93  * eg;
  94  *
  95  *   s3c2410_gpio_pullup(S3C2410_GPB0, 0);
  96  *   s3c2410_gpio_pullup(S3C2410_GPE8, 0);
  97 */
  98
  99 extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to);
 100
 101 /* s3c2410_gpio_getpull
 102  *
 103  * Read the state of the pull-up on a given pin
 104  *
 105  * return:
 106  *      < 0 => error code
 107  *        0 => enabled
 108  *        1 => disabled
 109 */
 110
 111 extern int s3c2410_gpio_getpull(unsigned int pin);
 112
 113 extern void s3c2410_gpio_setpin(unsigned int pin, unsigned int to);
 114
 115 extern unsigned int s3c2410_gpio_getpin(unsigned int pin);
 116
 117 extern unsigned int s3c2410_modify_misccr(unsigned int clr, unsigned int chg);
 118
 119 #ifdef CONFIG_CPU_S3C2440
 120
 121 extern int s3c2440_set_dsc(unsigned int pin, unsigned int value);
 122
 123 #endif /* CONFIG_CPU_S3C2440 */
 124
 125 #ifdef CONFIG_CPU_S3C2412
 126
 127 extern int s3c2412_gpio_set_sleepcfg(unsigned int pin, unsigned int state);
 128
 129 #endif /* CONFIG_CPU_S3C2412 */
 130
 131 #endif /* __ASSEMBLY__ */
 132
 133 #include <asm/sizes.h>
 134 #include <asm/arch/map.h>
 135
 136 /* machine specific hardware definitions should go after this */
 137
 138 /* currently here until moved into config (todo) */
 139 #define CONFIG_NO_MULTIWORD_IO
 140
 141 #endif /* __ASM_ARCH_HARDWARE_H */