include/asm-arm/arch-ep93xx/gpio.h

   1 /*
   2  * linux/include/asm-arm/arch-ep93xx/gpio.h
   3  */
   4
   5 #ifndef __ASM_ARCH_GPIO_H
   6 #define __ASM_ARCH_GPIO_H
   7
   8 /* GPIO port A.  */
   9 #define EP93XX_GPIO_LINE_A(x)           ((x) + 0)
  10 #define EP93XX_GPIO_LINE_EGPIO0         EP93XX_GPIO_LINE_A(0)
  11 #define EP93XX_GPIO_LINE_EGPIO1         EP93XX_GPIO_LINE_A(1)
  12 #define EP93XX_GPIO_LINE_EGPIO2         EP93XX_GPIO_LINE_A(2)
  13 #define EP93XX_GPIO_LINE_EGPIO3         EP93XX_GPIO_LINE_A(3)
  14 #define EP93XX_GPIO_LINE_EGPIO4         EP93XX_GPIO_LINE_A(4)
  15 #define EP93XX_GPIO_LINE_EGPIO5         EP93XX_GPIO_LINE_A(5)
  16 #define EP93XX_GPIO_LINE_EGPIO6         EP93XX_GPIO_LINE_A(6)
  17 #define EP93XX_GPIO_LINE_EGPIO7         EP93XX_GPIO_LINE_A(7)
  18
  19 /* GPIO port B.  */
  20 #define EP93XX_GPIO_LINE_B(x)           ((x) + 8)
  21 #define EP93XX_GPIO_LINE_EGPIO8         EP93XX_GPIO_LINE_B(0)
  22 #define EP93XX_GPIO_LINE_EGPIO9         EP93XX_GPIO_LINE_B(1)
  23 #define EP93XX_GPIO_LINE_EGPIO10        EP93XX_GPIO_LINE_B(2)
  24 #define EP93XX_GPIO_LINE_EGPIO11        EP93XX_GPIO_LINE_B(3)
  25 #define EP93XX_GPIO_LINE_EGPIO12        EP93XX_GPIO_LINE_B(4)
  26 #define EP93XX_GPIO_LINE_EGPIO13        EP93XX_GPIO_LINE_B(5)
  27 #define EP93XX_GPIO_LINE_EGPIO14        EP93XX_GPIO_LINE_B(6)
  28 #define EP93XX_GPIO_LINE_EGPIO15        EP93XX_GPIO_LINE_B(7)
  29
  30 /* GPIO port C.  */
  31 #define EP93XX_GPIO_LINE_C(x)           ((x) + 40)
  32 #define EP93XX_GPIO_LINE_ROW0           EP93XX_GPIO_LINE_C(0)
  33 #define EP93XX_GPIO_LINE_ROW1           EP93XX_GPIO_LINE_C(1)
  34 #define EP93XX_GPIO_LINE_ROW2           EP93XX_GPIO_LINE_C(2)
  35 #define EP93XX_GPIO_LINE_ROW3           EP93XX_GPIO_LINE_C(3)
  36 #define EP93XX_GPIO_LINE_ROW4           EP93XX_GPIO_LINE_C(4)
  37 #define EP93XX_GPIO_LINE_ROW5           EP93XX_GPIO_LINE_C(5)
  38 #define EP93XX_GPIO_LINE_ROW6           EP93XX_GPIO_LINE_C(6)
  39 #define EP93XX_GPIO_LINE_ROW7           EP93XX_GPIO_LINE_C(7)
  40
  41 /* GPIO port D.  */
  42 #define EP93XX_GPIO_LINE_D(x)           ((x) + 24)
  43 #define EP93XX_GPIO_LINE_COL0           EP93XX_GPIO_LINE_D(0)
  44 #define EP93XX_GPIO_LINE_COL1           EP93XX_GPIO_LINE_D(1)
  45 #define EP93XX_GPIO_LINE_COL2           EP93XX_GPIO_LINE_D(2)
  46 #define EP93XX_GPIO_LINE_COL3           EP93XX_GPIO_LINE_D(3)
  47 #define EP93XX_GPIO_LINE_COL4           EP93XX_GPIO_LINE_D(4)
  48 #define EP93XX_GPIO_LINE_COL5           EP93XX_GPIO_LINE_D(5)
  49 #define EP93XX_GPIO_LINE_COL6           EP93XX_GPIO_LINE_D(6)
  50 #define EP93XX_GPIO_LINE_COL7           EP93XX_GPIO_LINE_D(7)
  51
  52 /* GPIO port E.  */
  53 #define EP93XX_GPIO_LINE_E(x)           ((x) + 32)
  54 #define EP93XX_GPIO_LINE_GRLED          EP93XX_GPIO_LINE_E(0)
  55 #define EP93XX_GPIO_LINE_RDLED          EP93XX_GPIO_LINE_E(1)
  56 #define EP93XX_GPIO_LINE_DIORn          EP93XX_GPIO_LINE_E(2)
  57 #define EP93XX_GPIO_LINE_IDECS1n        EP93XX_GPIO_LINE_E(3)
  58 #define EP93XX_GPIO_LINE_IDECS2n        EP93XX_GPIO_LINE_E(4)
  59 #define EP93XX_GPIO_LINE_IDEDA0         EP93XX_GPIO_LINE_E(5)
  60 #define EP93XX_GPIO_LINE_IDEDA1         EP93XX_GPIO_LINE_E(6)
  61 #define EP93XX_GPIO_LINE_IDEDA2         EP93XX_GPIO_LINE_E(7)
  62
  63 /* GPIO port F.  */
  64 #define EP93XX_GPIO_LINE_F(x)           ((x) + 16)
  65 #define EP93XX_GPIO_LINE_WP             EP93XX_GPIO_LINE_F(0)
  66 #define EP93XX_GPIO_LINE_MCCD1          EP93XX_GPIO_LINE_F(1)
  67 #define EP93XX_GPIO_LINE_MCCD2          EP93XX_GPIO_LINE_F(2)
  68 #define EP93XX_GPIO_LINE_MCBVD1         EP93XX_GPIO_LINE_F(3)
  69 #define EP93XX_GPIO_LINE_MCBVD2         EP93XX_GPIO_LINE_F(4)
  70 #define EP93XX_GPIO_LINE_VS1            EP93XX_GPIO_LINE_F(5)
  71 #define EP93XX_GPIO_LINE_READY          EP93XX_GPIO_LINE_F(6)
  72 #define EP93XX_GPIO_LINE_VS2            EP93XX_GPIO_LINE_F(7)
  73
  74 /* GPIO port G.  */
  75 #define EP93XX_GPIO_LINE_G(x)           ((x) + 48)
  76 #define EP93XX_GPIO_LINE_EECLK          EP93XX_GPIO_LINE_G(0)
  77 #define EP93XX_GPIO_LINE_EEDAT          EP93XX_GPIO_LINE_G(1)
  78 #define EP93XX_GPIO_LINE_SLA0           EP93XX_GPIO_LINE_G(2)
  79 #define EP93XX_GPIO_LINE_SLA1           EP93XX_GPIO_LINE_G(3)
  80 #define EP93XX_GPIO_LINE_DD12           EP93XX_GPIO_LINE_G(4)
  81 #define EP93XX_GPIO_LINE_DD13           EP93XX_GPIO_LINE_G(5)
  82 #define EP93XX_GPIO_LINE_DD14           EP93XX_GPIO_LINE_G(6)
  83 #define EP93XX_GPIO_LINE_DD15           EP93XX_GPIO_LINE_G(7)
  84
  85 /* GPIO port H.  */
  86 #define EP93XX_GPIO_LINE_H(x)           ((x) + 56)
  87 #define EP93XX_GPIO_LINE_DD0            EP93XX_GPIO_LINE_H(0)
  88 #define EP93XX_GPIO_LINE_DD1            EP93XX_GPIO_LINE_H(1)
  89 #define EP93XX_GPIO_LINE_DD2            EP93XX_GPIO_LINE_H(2)
  90 #define EP93XX_GPIO_LINE_DD3            EP93XX_GPIO_LINE_H(3)
  91 #define EP93XX_GPIO_LINE_DD4            EP93XX_GPIO_LINE_H(4)
  92 #define EP93XX_GPIO_LINE_DD5            EP93XX_GPIO_LINE_H(5)
  93 #define EP93XX_GPIO_LINE_DD6            EP93XX_GPIO_LINE_H(6)
  94 #define EP93XX_GPIO_LINE_DD7            EP93XX_GPIO_LINE_H(7)
  95
  96 /* maximum value for gpio line identifiers */
  97 #define EP93XX_GPIO_LINE_MAX            EP93XX_GPIO_LINE_H(7)
  98
  99 /* maximum value for irq capable line identifiers */
 100 #define EP93XX_GPIO_LINE_MAX_IRQ        EP93XX_GPIO_LINE_F(7)
 101
 102 /* new generic GPIO API - see Documentation/gpio.txt */
 103
 104 static inline int gpio_request(unsigned gpio, const char *label)
 105 {
 106         if (gpio > EP93XX_GPIO_LINE_MAX)
 107                 return -EINVAL;
 108         return 0;
 109 }
 110
 111 static inline void gpio_free(unsigned gpio)
 112 {
 113 }
 114
 115 int gpio_direction_input(unsigned gpio);
 116 int gpio_direction_output(unsigned gpio, int value);
 117 int gpio_get_value(unsigned gpio);
 118 void gpio_set_value(unsigned gpio, int value);
 119
 120 #include <asm-generic/gpio.h> /* cansleep wrappers */
 121
 122 /*
 123  * Map GPIO A0..A7  (0..7)  to irq 64..71,
 124  *          B0..B7  (7..15) to irq 72..79, and
 125  *          F0..F7 (16..24) to irq 80..87.
 126  */
 127
 128 static inline int gpio_to_irq(unsigned gpio)
 129 {
 130         if (gpio <= EP93XX_GPIO_LINE_MAX_IRQ)
 131                 return 64 + gpio;
 132
 133         return -EINVAL;
 134 }
 135
 136 static inline int irq_to_gpio(unsigned irq)
 137 {
 138         return irq - gpio_to_irq(0);
 139 }
 140
 141 #endif