Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/include/asm-arm/arch-omap/gpio.h | |
3 | * | |
4 | * OMAP GPIO handling defines and functions | |
5 | * | |
9839c6b8 | 6 | * Copyright (C) 2003-2005 Nokia Corporation |
1da177e4 | 7 | * |
121e70b6 | 8 | * Written by Juha Yrjölä <juha.yrjola@nokia.com> |
1da177e4 LT |
9 | * |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License as published by | |
12 | * the Free Software Foundation; either version 2 of the License, or | |
13 | * (at your option) any later version. | |
14 | * | |
15 | * This program is distributed in the hope that it will be useful, | |
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | * GNU General Public License for more details. | |
19 | * | |
20 | * You should have received a copy of the GNU General Public License | |
21 | * along with this program; if not, write to the Free Software | |
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
23 | * | |
24 | */ | |
25 | ||
26 | #ifndef __ASM_ARCH_OMAP_GPIO_H | |
27 | #define __ASM_ARCH_OMAP_GPIO_H | |
28 | ||
0a5709b2 | 29 | #include <asm/hardware.h> |
1da177e4 LT |
30 | #include <asm/arch/irqs.h> |
31 | #include <asm/io.h> | |
32 | ||
9839c6b8 TL |
33 | #define OMAP_MPUIO_BASE (void __iomem *)0xfffb5000 |
34 | ||
35 | #ifdef CONFIG_ARCH_OMAP730 | |
36 | #define OMAP_MPUIO_INPUT_LATCH 0x00 | |
37 | #define OMAP_MPUIO_OUTPUT 0x02 | |
38 | #define OMAP_MPUIO_IO_CNTL 0x04 | |
39 | #define OMAP_MPUIO_KBR_LATCH 0x08 | |
40 | #define OMAP_MPUIO_KBC 0x0a | |
41 | #define OMAP_MPUIO_GPIO_EVENT_MODE 0x0c | |
42 | #define OMAP_MPUIO_GPIO_INT_EDGE 0x0e | |
43 | #define OMAP_MPUIO_KBD_INT 0x10 | |
44 | #define OMAP_MPUIO_GPIO_INT 0x12 | |
45 | #define OMAP_MPUIO_KBD_MASKIT 0x14 | |
46 | #define OMAP_MPUIO_GPIO_MASKIT 0x16 | |
47 | #define OMAP_MPUIO_GPIO_DEBOUNCING 0x18 | |
48 | #define OMAP_MPUIO_LATCH 0x1a | |
49 | #else | |
1da177e4 LT |
50 | #define OMAP_MPUIO_INPUT_LATCH 0x00 |
51 | #define OMAP_MPUIO_OUTPUT 0x04 | |
52 | #define OMAP_MPUIO_IO_CNTL 0x08 | |
53 | #define OMAP_MPUIO_KBR_LATCH 0x10 | |
54 | #define OMAP_MPUIO_KBC 0x14 | |
55 | #define OMAP_MPUIO_GPIO_EVENT_MODE 0x18 | |
56 | #define OMAP_MPUIO_GPIO_INT_EDGE 0x1c | |
57 | #define OMAP_MPUIO_KBD_INT 0x20 | |
58 | #define OMAP_MPUIO_GPIO_INT 0x24 | |
59 | #define OMAP_MPUIO_KBD_MASKIT 0x28 | |
60 | #define OMAP_MPUIO_GPIO_MASKIT 0x2c | |
61 | #define OMAP_MPUIO_GPIO_DEBOUNCING 0x30 | |
62 | #define OMAP_MPUIO_LATCH 0x34 | |
9839c6b8 | 63 | #endif |
1da177e4 | 64 | |
5492fb1a SMK |
65 | #define OMAP34XX_NR_GPIOS 6 |
66 | ||
1da177e4 LT |
67 | #define OMAP_MPUIO(nr) (OMAP_MAX_GPIO_LINES + (nr)) |
68 | #define OMAP_GPIO_IS_MPUIO(nr) ((nr) >= OMAP_MAX_GPIO_LINES) | |
69 | ||
70 | #define OMAP_GPIO_IRQ(nr) (OMAP_GPIO_IS_MPUIO(nr) ? \ | |
71 | IH_MPUIO_BASE + ((nr) & 0x0f) : \ | |
9ad5897c | 72 | IH_GPIO_BASE + (nr)) |
1da177e4 | 73 | |
1da177e4 LT |
74 | extern int omap_gpio_init(void); /* Call from board init only */ |
75 | extern int omap_request_gpio(int gpio); | |
76 | extern void omap_free_gpio(int gpio); | |
77 | extern void omap_set_gpio_direction(int gpio, int is_input); | |
78 | extern void omap_set_gpio_dataout(int gpio, int enable); | |
79 | extern int omap_get_gpio_datain(int gpio); | |
1da177e4 | 80 | |
3c729f1e DB |
81 | /*-------------------------------------------------------------------------*/ |
82 | ||
83 | /* wrappers for "new style" GPIO calls. the old OMAP-specfic ones should | |
84 | * eventually be removed (along with this errno.h inclusion), and maybe | |
85 | * gpios should put MPUIOs last too. | |
86 | */ | |
87 | ||
88 | #include <asm/errno.h> | |
89 | ||
90 | static inline int gpio_request(unsigned gpio, const char *label) | |
91 | { | |
92 | return omap_request_gpio(gpio); | |
93 | } | |
94 | ||
95 | static inline void gpio_free(unsigned gpio) | |
96 | { | |
97 | omap_free_gpio(gpio); | |
98 | } | |
99 | ||
100 | static inline int __gpio_set_direction(unsigned gpio, int is_input) | |
101 | { | |
102 | if (cpu_class_is_omap2()) { | |
103 | if (gpio > OMAP_MAX_GPIO_LINES) | |
104 | return -EINVAL; | |
105 | } else { | |
106 | if (gpio > (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */)) | |
107 | return -EINVAL; | |
108 | } | |
109 | omap_set_gpio_direction(gpio, is_input); | |
110 | return 0; | |
111 | } | |
112 | ||
113 | static inline int gpio_direction_input(unsigned gpio) | |
114 | { | |
115 | return __gpio_set_direction(gpio, 1); | |
116 | } | |
117 | ||
28735a72 | 118 | static inline int gpio_direction_output(unsigned gpio, int value) |
3c729f1e | 119 | { |
28735a72 | 120 | omap_set_gpio_dataout(gpio, value); |
3c729f1e DB |
121 | return __gpio_set_direction(gpio, 0); |
122 | } | |
123 | ||
124 | static inline int gpio_get_value(unsigned gpio) | |
125 | { | |
126 | return omap_get_gpio_datain(gpio); | |
127 | } | |
128 | ||
129 | static inline void gpio_set_value(unsigned gpio, int value) | |
130 | { | |
131 | omap_set_gpio_dataout(gpio, value); | |
132 | } | |
133 | ||
134 | #include <asm-generic/gpio.h> /* cansleep wrappers */ | |
135 | ||
136 | static inline int gpio_to_irq(unsigned gpio) | |
137 | { | |
138 | return OMAP_GPIO_IRQ(gpio); | |
139 | } | |
140 | ||
141 | static inline int irq_to_gpio(unsigned irq) | |
142 | { | |
143 | if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16))) | |
144 | return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES; | |
145 | return irq - IH_GPIO_BASE; | |
146 | } | |
147 | ||
1da177e4 | 148 | #endif |