target/linux/rb532/files/include/asm-mips/rc32434/gpio.h

   1 /*
   2  * Copyright 2002 Integrated Device Technology, Inc.
   3  *      All rights reserved.
   4  *
   5  * GPIO register definition.
   6  *
   7  * Author : ryan.holmQVist@idt.com
   8  * Date   : 20011005
   9  * Copyright (C) 2001, 2002 Ryan Holm <ryan.holmQVist@idt.com>
  10  * Copyright (C) 2008 Florian Fainelli <florian@openwrt.org>
  11  */
  12
  13 #ifndef _RC32434_GPIO_H_
  14 #define _RC32434_GPIO_H_
  15
  16 #include <linux/types.h>
  17
  18 struct rb500_gpio_reg {
  19         u32   gpiofunc;   /* GPIO Function Register
  20                            * gpiofunc[x]==0 bit = gpio
  21                            * func[x]==1  bit = altfunc
  22                            */
  23         u32   gpiocfg;    /* GPIO Configuration Register
  24                            * gpiocfg[x]==0 bit = input
  25                            * gpiocfg[x]==1 bit = output
  26                            */
  27         u32   gpiod;      /* GPIO Data Register
  28                            * gpiod[x] read/write gpio pinX status
  29                            */
  30         u32   gpioilevel; /* GPIO Interrupt Status Register
  31                            * interrupt level (see gpioistat)
  32                            */
  33         u32   gpioistat;  /* Gpio Interrupt Status Register
  34                            * istat[x] = (gpiod[x] == level[x])
  35                            * cleared in ISR (STICKY bits)
  36                            */
  37         u32   gpionmien;  /* GPIO Non-maskable Interrupt Enable Register */
  38 };
  39
  40 /* UART GPIO signals */
  41 #define RC32434_UART0_SOUT      (1 << 0)
  42 #define RC32434_UART0_SIN       (1 << 1)
  43 #define RC32434_UART0_RTS       (1 << 2)
  44 #define RC32434_UART0_CTS       (1 << 3)
  45
  46 /* M & P bus GPIO signals */
  47 #define RC32434_MP_BIT_22       (1 << 4)
  48 #define RC32434_MP_BIT_23       (1 << 5)
  49 #define RC32434_MP_BIT_24       (1 << 6)
  50 #define RC32434_MP_BIT_25       (1 << 7)
  51
  52 /* CPU GPIO signals */
  53 #define RC32434_CPU_GPIO        (1 << 8)
  54
  55 /* Reserved GPIO signals */
  56 #define RC32434_AF_SPARE_6      (1 << 9)
  57 #define RC32434_AF_SPARE_4      (1 << 10)
  58 #define RC32434_AF_SPARE_3      (1 << 11)
  59 #define RC32434_AF_SPARE_2      (1 << 12)
  60
  61 /* PCI messaging unit */
  62 #define RC32434_PCI_MSU_GPIO    (1 << 13)
  63
  64 extern int rb500_gpio_get_value(unsigned gpio);
  65 extern void rb500_gpio_set_value(unsigned gpio, int value);
  66 extern int rb500_gpio_direction_input(unsigned gpio);
  67 extern int rb500_gpio_direction_output(unsigned gpio, int value);
  68 extern void rb500_gpio_set_int_level(unsigned gpio, int value);
  69 extern int rb500_gpio_get_int_level(unsigned gpio);
  70 extern void rb500_gpio_set_int_status(unsigned gpio, int value);
  71 extern int rb500_gpio_get_int_status(unsigned gpio);
  72 extern void rb500_gpio_set_func(unsigned gpio, int value);
  73 extern int rb500_gpio_get_func(unsigned gpio);
  74
  75
  76 /* Wrappers for the arch-neutral GPIO API */
  77
  78 static inline int gpio_request(unsigned gpio, const char *label)
  79 {
  80         /* Not yet implemented */
  81         return 0;
  82 }
  83
  84 static inline void gpio_free(unsigned gpio)
  85 {
  86         /* Not yet implemented */
  87 }
  88
  89 static inline int gpio_direction_input(unsigned gpio)
  90 {
  91         return rb500_gpio_direction_input(gpio);
  92 }
  93
  94 static inline int gpio_direction_output(unsigned gpio, int value)
  95 {
  96         return rb500_gpio_direction_output(gpio, value);
  97 }
  98
  99 static inline int gpio_get_value(unsigned gpio)
 100 {
 101         return rb500_gpio_get_value(gpio);
 102 }
 103
 104 static inline void gpio_set_value(unsigned gpio, int value)
 105 {
 106         rb500_gpio_set_value(gpio, value);
 107 }
 108
 109 static inline int gpio_to_irq(unsigned gpio)
 110 {
 111         return gpio;
 112 }
 113
 114 static inline int irq_to_gpio(unsigned irq)
 115 {
 116         return irq;
 117 }
 118
 119 /* For cansleep */
 120 #include <asm-generic/gpio.h>
 121
 122 #endif /* _RC32434_GPIO_H_ */