1 /*
2 * arch/arm/plat-omap/include/mach/gpio.h
3 *
4 * OMAP GPIO handling defines and functions
5 *
6 * Copyright (C) 2003-2005 Nokia Corporation
7 *
8 * Written by Juha Yrjölä <juha.yrjola@nokia.com>
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
29 #include <linux/io.h>
30 #include <mach/irqs.h>
31
32 #define OMAP_MPUIO_BASE 0xfffb5000
33
34 #if (defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850))
35
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
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
63 #endif
64
65 #define OMAP34XX_NR_GPIOS 6
66
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) : \
72 IH_GPIO_BASE + (nr))
73
74 extern int omap_gpio_init(void); /* Call from board init only */
75 extern void omap2_gpio_prepare_for_retention(void);
76 extern void omap2_gpio_resume_after_retention(void);
77 extern void omap_set_gpio_debounce(int gpio, int enable);
78 extern void omap_set_gpio_debounce_time(int gpio, int enable);
79
80 /*-------------------------------------------------------------------------*/
81
82 /* Wrappers for "new style" GPIO calls, using the new infrastructure
83 * which lets us plug in FPGA, I2C, and other implementations.
84 * *
85 * The original OMAP-specfic calls should eventually be removed.
86 */
87
88 #include <linux/errno.h>
89 #include <asm-generic/gpio.h>
90
91 static inline int gpio_get_value(unsigned gpio)
92 {
93 return __gpio_get_value(gpio);
94 }
95
96 static inline void gpio_set_value(unsigned gpio, int value)
97 {
98 __gpio_set_value(gpio, value);
99 }
100
101 static inline int gpio_cansleep(unsigned gpio)
102 {
103 return __gpio_cansleep(gpio);
104 }
105
106 static inline int gpio_to_irq(unsigned gpio)
107 {
108 return __gpio_to_irq(gpio);
109 }
110
111 static inline int irq_to_gpio(unsigned irq)
112 {
113 int tmp;
114
115 /* omap1 SOC mpuio */
116 if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16)))
117 return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES;
118
119 /* SOC gpio */
120 tmp = irq - IH_GPIO_BASE;
121 if (tmp < OMAP_MAX_GPIO_LINES)
122 return tmp;
123
124 /* we don't supply reverse mappings for non-SOC gpios */
125 return -EIO;
126 }
127
128 #endif
129
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