LXR linux/arch/blackfin/include/asm/gpio.h

   1/*
   2 * Copyright 2006-2009 Analog Devices Inc.
   3 *
   4 * Licensed under the GPL-2 or later.
   5 */
   6
   7#ifndef __ARCH_BLACKFIN_GPIO_H__
   8#define __ARCH_BLACKFIN_GPIO_H__
   9
  10#define gpio_bank(x)    ((x) >> 4)
  11#define gpio_bit(x)     (1<<((x) & 0xF))
  12#define gpio_sub_n(x)   ((x) & 0xF)
  13
  14#define GPIO_BANKSIZE   16
  15#define GPIO_BANK_NUM   DIV_ROUND_UP(MAX_BLACKFIN_GPIOS, GPIO_BANKSIZE)
  16
  17#include <mach/gpio.h>
  18
  19#define PERIPHERAL_USAGE 1
  20#define GPIO_USAGE 0
  21
  22#ifndef BFIN_GPIO_PINT
  23# define BFIN_GPIO_PINT 0
  24#endif
  25
  26#ifndef __ASSEMBLY__
  27
  28#ifndef CONFIG_PINCTRL
  29
  30#include <linux/compiler.h>
  31#include <asm/blackfin.h>
  32#include <asm/portmux.h>
  33#include <asm/irq_handler.h>
  34
  35/***********************************************************
  36*
  37* FUNCTIONS: Blackfin General Purpose Ports Access Functions
  38*
  39* INPUTS/OUTPUTS:
  40* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
  41*
  42*
  43* DESCRIPTION: These functions abstract direct register access
  44*              to Blackfin processor General Purpose
  45*              Ports Regsiters
  46*
  47* CAUTION: These functions do not belong to the GPIO Driver API
  48*************************************************************
  49* MODIFICATION HISTORY :
  50**************************************************************/
  51
  52void set_gpio_dir(unsigned, unsigned short);
  53void set_gpio_inen(unsigned, unsigned short);
  54void set_gpio_polar(unsigned, unsigned short);
  55void set_gpio_edge(unsigned, unsigned short);
  56void set_gpio_both(unsigned, unsigned short);
  57void set_gpio_data(unsigned, unsigned short);
  58void set_gpio_maska(unsigned, unsigned short);
  59void set_gpio_maskb(unsigned, unsigned short);
  60void set_gpio_toggle(unsigned);
  61void set_gpiop_dir(unsigned, unsigned short);
  62void set_gpiop_inen(unsigned, unsigned short);
  63void set_gpiop_polar(unsigned, unsigned short);
  64void set_gpiop_edge(unsigned, unsigned short);
  65void set_gpiop_both(unsigned, unsigned short);
  66void set_gpiop_data(unsigned, unsigned short);
  67void set_gpiop_maska(unsigned, unsigned short);
  68void set_gpiop_maskb(unsigned, unsigned short);
  69unsigned short get_gpio_dir(unsigned);
  70unsigned short get_gpio_inen(unsigned);
  71unsigned short get_gpio_polar(unsigned);
  72unsigned short get_gpio_edge(unsigned);
  73unsigned short get_gpio_both(unsigned);
  74unsigned short get_gpio_maska(unsigned);
  75unsigned short get_gpio_maskb(unsigned);
  76unsigned short get_gpio_data(unsigned);
  77unsigned short get_gpiop_dir(unsigned);
  78unsigned short get_gpiop_inen(unsigned);
  79unsigned short get_gpiop_polar(unsigned);
  80unsigned short get_gpiop_edge(unsigned);
  81unsigned short get_gpiop_both(unsigned);
  82unsigned short get_gpiop_maska(unsigned);
  83unsigned short get_gpiop_maskb(unsigned);
  84unsigned short get_gpiop_data(unsigned);
  85
  86struct gpio_port_t {
  87        unsigned short data;
  88        unsigned short dummy1;
  89        unsigned short data_clear;
  90        unsigned short dummy2;
  91        unsigned short data_set;
  92        unsigned short dummy3;
  93        unsigned short toggle;
  94        unsigned short dummy4;
  95        unsigned short maska;
  96        unsigned short dummy5;
  97        unsigned short maska_clear;
  98        unsigned short dummy6;
  99        unsigned short maska_set;
 100        unsigned short dummy7;
 101        unsigned short maska_toggle;
 102        unsigned short dummy8;
 103        unsigned short maskb;
 104        unsigned short dummy9;
 105        unsigned short maskb_clear;
 106        unsigned short dummy10;
 107        unsigned short maskb_set;
 108        unsigned short dummy11;
 109        unsigned short maskb_toggle;
 110        unsigned short dummy12;
 111        unsigned short dir;
 112        unsigned short dummy13;
 113        unsigned short polar;
 114        unsigned short dummy14;
 115        unsigned short edge;
 116        unsigned short dummy15;
 117        unsigned short both;
 118        unsigned short dummy16;
 119        unsigned short inen;
 120};
 121
 122#ifdef BFIN_SPECIAL_GPIO_BANKS
 123void bfin_special_gpio_free(unsigned gpio);
 124int bfin_special_gpio_request(unsigned gpio, const char *label);
 125# ifdef CONFIG_PM
 126void bfin_special_gpio_pm_hibernate_restore(void);
 127void bfin_special_gpio_pm_hibernate_suspend(void);
 128# endif
 129#endif
 130
 131#ifdef CONFIG_PM
 132void bfin_gpio_pm_hibernate_restore(void);
 133void bfin_gpio_pm_hibernate_suspend(void);
 134int bfin_gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl);
 135int bfin_gpio_pm_standby_ctrl(unsigned ctrl);
 136
 137static inline int bfin_pm_standby_setup(void)
 138{
 139        return bfin_gpio_pm_standby_ctrl(1);
 140}
 141
 142static inline void bfin_pm_standby_restore(void)
 143{
 144        bfin_gpio_pm_standby_ctrl(0);
 145}
 146
 147
 148struct gpio_port_s {
 149        unsigned short data;
 150        unsigned short maska;
 151        unsigned short maskb;
 152        unsigned short dir;
 153        unsigned short polar;
 154        unsigned short edge;
 155        unsigned short both;
 156        unsigned short inen;
 157
 158        unsigned short fer;
 159        unsigned short reserved;
 160        unsigned short mux;
 161};
 162#endif /*CONFIG_PM*/
 163
 164/***********************************************************
 165*
 166* FUNCTIONS: Blackfin GPIO Driver
 167*
 168* INPUTS/OUTPUTS:
 169* gpio - GPIO Number between 0 and MAX_BLACKFIN_GPIOS
 170*
 171*
 172* DESCRIPTION: Blackfin GPIO Driver API
 173*
 174* CAUTION:
 175*************************************************************
 176* MODIFICATION HISTORY :
 177**************************************************************/
 178int bfin_gpio_irq_request(unsigned gpio, const char *label);
 179void bfin_gpio_irq_free(unsigned gpio);
 180void bfin_gpio_irq_prepare(unsigned gpio);
 181
 182static inline int irq_to_gpio(unsigned irq)
 183{
 184        return irq - GPIO_IRQ_BASE;
 185}
 186#endif /* CONFIG_PINCTRL */
 187
 188#include <asm/irq.h>
 189#include <asm/errno.h>
 190
 191#include <asm-generic/gpio.h>           /* cansleep wrappers */
 192
 193static inline int gpio_get_value(unsigned int gpio)
 194{
 195        return __gpio_get_value(gpio);
 196}
 197
 198static inline void gpio_set_value(unsigned int gpio, int value)
 199{
 200        __gpio_set_value(gpio, value);
 201}
 202
 203static inline int gpio_cansleep(unsigned int gpio)
 204{
 205        return __gpio_cansleep(gpio);
 206}
 207
 208static inline int gpio_to_irq(unsigned gpio)
 209{
 210        return __gpio_to_irq(gpio);
 211}
 212#endif /* __ASSEMBLY__ */
 213
 214#endif /* __ARCH_BLACKFIN_GPIO_H__ */
 215