release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/include/asm/mach-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 #include <asm-generic/gpio.h>
  18
  19 #define NR_BUILTIN_GPIO         32
  20
  21 #define gpio_get_value  __gpio_get_value
  22 #define gpio_set_value  __gpio_set_value
  23 #define gpio_cansleep   __gpio_cansleep
  24
  25 #define gpio_to_irq(gpio)       (8 + 4 * 32 + gpio)
  26 #define irq_to_gpio(irq)        (irq - (8 + 4 * 32))
  27
  28 struct rb532_gpio_reg {
  29         u32   gpiofunc;   /* GPIO Function Register
  30                            * gpiofunc[x]==0 bit = gpio
  31                            * func[x]==1  bit = altfunc
  32                            */
  33         u32   gpiocfg;    /* GPIO Configuration Register
  34                            * gpiocfg[x]==0 bit = input
  35                            * gpiocfg[x]==1 bit = output
  36                            */
  37         u32   gpiod;      /* GPIO Data Register
  38                            * gpiod[x] read/write gpio pinX status
  39                            */
  40         u32   gpioilevel; /* GPIO Interrupt Status Register
  41                            * interrupt level (see gpioistat)
  42                            */
  43         u32   gpioistat;  /* Gpio Interrupt Status Register
  44                            * istat[x] = (gpiod[x] == level[x])
  45                            * cleared in ISR (STICKY bits)
  46                            */
  47         u32   gpionmien;  /* GPIO Non-maskable Interrupt Enable Register */
  48 };
  49
  50 /* UART GPIO signals */
  51 #define RC32434_UART0_SOUT      (1 << 0)
  52 #define RC32434_UART0_SIN       (1 << 1)
  53 #define RC32434_UART0_RTS       (1 << 2)
  54 #define RC32434_UART0_CTS       (1 << 3)
  55
  56 /* M & P bus GPIO signals */
  57 #define RC32434_MP_BIT_22       (1 << 4)
  58 #define RC32434_MP_BIT_23       (1 << 5)
  59 #define RC32434_MP_BIT_24       (1 << 6)
  60 #define RC32434_MP_BIT_25       (1 << 7)
  61
  62 /* CPU GPIO signals */
  63 #define RC32434_CPU_GPIO        (1 << 8)
  64
  65 /* Reserved GPIO signals */
  66 #define RC32434_AF_SPARE_6      (1 << 9)
  67 #define RC32434_AF_SPARE_4      (1 << 10)
  68 #define RC32434_AF_SPARE_3      (1 << 11)
  69 #define RC32434_AF_SPARE_2      (1 << 12)
  70
  71 /* PCI messaging unit */
  72 #define RC32434_PCI_MSU_GPIO    (1 << 13)
  73
  74 /* NAND GPIO signals */
  75 #define GPIO_RDY                8
  76 #define GPIO_WPX        9
  77 #define GPIO_ALE                10
  78 #define GPIO_CLE                11
  79
  80 /* Compact Flash GPIO pin */
  81 #define CF_GPIO_NUM             13
  82
  83 /* S1 button GPIO (shared with UART0_SIN) */
  84 #define GPIO_BTN_S1             1
  85
  86 extern void rb532_gpio_set_ilevel(int bit, unsigned gpio);
  87 extern void rb532_gpio_set_istat(int bit, unsigned gpio);
  88 extern void rb532_gpio_set_func(unsigned gpio);
  89
  90 #endif /* _RC32434_GPIO_H_ */