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  * Changelog:
  13  *  21-May-2003 BJD  Created file
  14  *  06-Jun-2003 BJD  Added CPU frequency settings
  15  *  03-Sep-2003 BJD  Linux v2.6 support
  16  *  12-Mar-2004 BJD  Fixed include protection, fixed type of clock vars
  17  *  14-Sep-2004 BJD  Added misccr and getpin to gpio
  18  *  01-Oct-2004 BJD  Added the new gpio functions
  19  *  16-Oct-2004 BJD  Removed the clock variables
  20  *  15-Jan-2006 LCVR Added s3c2400_gpio_getirq()
  21 */
  22
  23 #ifndef __ASM_ARCH_HARDWARE_H
  24 #define __ASM_ARCH_HARDWARE_H
  25
  26 #ifndef __ASSEMBLY__
  27
  28 /* external functions for GPIO support
  29  *
  30  * These allow various different clients to access the same GPIO
  31  * registers without conflicting. If your driver only owns the entire
  32  * GPIO register, then it is safe to ioremap/__raw_{read|write} to it.
  33 */
  34
  35 /* s3c2410_gpio_cfgpin
  36  *
  37  * set the configuration of the given pin to the value passed.
  38  *
  39  * eg:
  40  *    s3c2410_gpio_cfgpin(S3C2410_GPA0, S3C2410_GPA0_ADDR0);
  41  *    s3c2410_gpio_cfgpin(S3C2410_GPE8, S3C2410_GPE8_SDDAT1);
  42 */
  43
  44 extern void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function);
  45
  46 extern unsigned int s3c2410_gpio_getcfg(unsigned int pin);
  47
  48 /* s3c2410_gpio_getirq
  49  *
  50  * turn the given pin number into the corresponding IRQ number
  51  *
  52  * returns:
  53  *      < 0 = no interrupt for this pin
  54  *      >=0 = interrupt number for the pin
  55 */
  56
  57 extern int s3c2410_gpio_getirq(unsigned int pin);
  58
  59 #ifdef CONFIG_CPU_S3C2400
  60
  61 extern int s3c2400_gpio_getirq(unsigned int pin);
  62
  63 #endif /* CONFIG_CPU_S3C2400 */
  64
  65 /* s3c2410_gpio_irqfilter
  66  *
  67  * set the irq filtering on the given pin
  68  *
  69  * on = 0 => disable filtering
  70  *      1 => enable filtering
  71  *
  72  * config = S3C2410_EINTFLT_PCLK or S3C2410_EINTFLT_EXTCLK orred with
  73  *          width of filter (0 through 63)
  74  *
  75  *
  76 */
  77
  78 extern int s3c2410_gpio_irqfilter(unsigned int pin, unsigned int on,
  79                                   unsigned int config);
  80
  81 /* s3c2410_gpio_pullup
  82  *
  83  * configure the pull-up control on the given pin
  84  *
  85  * to = 1 => disable the pull-up
  86  *      0 => enable the pull-up
  87  *
  88  * eg;
  89  *
  90  *   s3c2410_gpio_pullup(S3C2410_GPB0, 0);
  91  *   s3c2410_gpio_pullup(S3C2410_GPE8, 0);
  92 */
  93
  94 extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to);
  95
  96 extern void s3c2410_gpio_setpin(unsigned int pin, unsigned int to);
  97
  98 extern unsigned int s3c2410_gpio_getpin(unsigned int pin);
  99
 100 extern unsigned int s3c2410_modify_misccr(unsigned int clr, unsigned int chg);
 101
 102 #ifdef CONFIG_CPU_S3C2440
 103
 104 extern int s3c2440_set_dsc(unsigned int pin, unsigned int value);
 105
 106 #endif /* CONFIG_CPU_S3C2440 */
 107
 108
 109 #endif /* __ASSEMBLY__ */
 110
 111 #include <asm/sizes.h>
 112 #include <asm/arch/map.h>
 113
 114 /* machine specific hardware definitions should go after this */
 115
 116 /* currently here until moved into config (todo) */
 117 #define CONFIG_NO_MULTIWORD_IO
 118
 119 #endif /* __ASM_ARCH_HARDWARE_H */