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
142
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