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

   1 /* linux/include/asm-arm/arch-s3c2410/hardware.h
   2  *
   3  * (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 #ifdef CONFIG_CPU_S3C2400
  50
  51 extern int s3c2400_gpio_getirq(unsigned int pin);
  52
  53 #endif /* CONFIG_CPU_S3C2400 */
  54
  55 /* s3c2410_gpio_irqfilter
  56  *
  57  * set the irq filtering on the given pin
  58  *
  59  * on = 0 => disable filtering
  60  *      1 => enable filtering
  61  *
  62  * config = S3C2410_EINTFLT_PCLK or S3C2410_EINTFLT_EXTCLK orred with
  63  *          width of filter (0 through 63)
  64  *
  65  *
  66 */
  67
  68 extern int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on,
  69                                   unsigned int config);
  70
  71 /* s3c2410_gpio_pullup
  72  *
  73  * configure the pull-up control on the given pin
  74  *
  75  * to = 1 => disable the pull-up
  76  *      0 => enable the pull-up
  77  *
  78  * eg;
  79  *
  80  *   s3c2410_gpio_pullup(S3C2410_GPB0, 0);
  81  *   s3c2410_gpio_pullup(S3C2410_GPE8, 0);
  82 */
  83
  84 extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to);
  85
  86 extern void s3c2410_gpio_setpin(unsigned int pin, unsigned int to);
  87
  88 extern unsigned int s3c2410_gpio_getpin(unsigned int pin);
  89
  90 extern unsigned int s3c2410_modify_misccr(unsigned int clr, unsigned int chg);
  91
  92 #ifdef CONFIG_CPU_S3C2440
  93
  94 extern int s3c2440_set_dsc(unsigned int pin, unsigned int value);
  95
  96 #endif /* CONFIG_CPU_S3C2440 */
  97
  98
  99 #endif /* __ASSEMBLY__ */
 100
 101 #include <asm/sizes.h>
 102 #include <asm/arch/map.h>
 103
 104 /* machine specific hardware definitions should go after this */
 105
 106 /* currently here until moved into config (todo) */
 107 #define CONFIG_NO_MULTIWORD_IO
 108
 109 #endif /* __ASM_ARCH_HARDWARE_H */