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 #ifdef CONFIG_ARCH_OMAP730
35 #define OMAP_MPUIO_INPUT_LATCH 0x00
36 #define OMAP_MPUIO_OUTPUT 0x02
37 #define OMAP_MPUIO_IO_CNTL 0x04
38 #define OMAP_MPUIO_KBR_LATCH 0x08
39 #define OMAP_MPUIO_KBC 0x0a
40 #define OMAP_MPUIO_GPIO_EVENT_MODE 0x0c
41 #define OMAP_MPUIO_GPIO_INT_EDGE 0x0e
42 #define OMAP_MPUIO_KBD_INT 0x10
43 #define OMAP_MPUIO_GPIO_INT 0x12
44 #define OMAP_MPUIO_KBD_MASKIT 0x14
45 #define OMAP_MPUIO_GPIO_MASKIT 0x16
46 #define OMAP_MPUIO_GPIO_DEBOUNCING 0x18
47 #define OMAP_MPUIO_LATCH 0x1a
48 #else
49 #define OMAP_MPUIO_INPUT_LATCH 0x00
50 #define OMAP_MPUIO_OUTPUT 0x04
51 #define OMAP_MPUIO_IO_CNTL 0x08
52 #define OMAP_MPUIO_KBR_LATCH 0x10
53 #define OMAP_MPUIO_KBC 0x14
54 #define OMAP_MPUIO_GPIO_EVENT_MODE 0x18
55 #define OMAP_MPUIO_GPIO_INT_EDGE 0x1c
56 #define OMAP_MPUIO_KBD_INT 0x20
57 #define OMAP_MPUIO_GPIO_INT 0x24
58 #define OMAP_MPUIO_KBD_MASKIT 0x28
59 #define OMAP_MPUIO_GPIO_MASKIT 0x2c
60 #define OMAP_MPUIO_GPIO_DEBOUNCING 0x30
61 #define OMAP_MPUIO_LATCH 0x34
62 #endif
63
64 #define OMAP34XX_NR_GPIOS 6
65
66 #define OMAP_MPUIO(nr) (OMAP_MAX_GPIO_LINES + (nr))
67 #define OMAP_GPIO_IS_MPUIO(nr) ((nr) >= OMAP_MAX_GPIO_LINES)
68
69 #define OMAP_GPIO_IRQ(nr) (OMAP_GPIO_IS_MPUIO(nr) ? \
70 IH_MPUIO_BASE + ((nr) & 0x0f) : \
71 IH_GPIO_BASE + (nr))
72
73 extern int omap_gpio_init(void); /* Call from board init only */
74 extern void omap2_gpio_prepare_for_retention(void);
75 extern void omap2_gpio_resume_after_retention(void);
76 extern void omap_set_gpio_debounce(int gpio, int enable);
77 extern void omap_set_gpio_debounce_time(int gpio, int enable);
78
79 /*-------------------------------------------------------------------------*/
80
81 /* Wrappers for "new style" GPIO calls, using the new infrastructure
82 * which lets us plug in FPGA, I2C, and other implementations.
83 * *
84 * The original OMAP-specfic calls should eventually be removed.
85 */
86
87 #include <linux/errno.h>
88 #include <asm-generic/gpio.h>
89
gpio_get_value(unsigned gpio)90 static inline int gpio_get_value(unsigned gpio)
91 {
92 return __gpio_get_value(gpio);
93 }
94
gpio_set_value(unsigned gpio,int value)95 static inline void gpio_set_value(unsigned gpio, int value)
96 {
97 __gpio_set_value(gpio, value);
98 }
99
gpio_cansleep(unsigned gpio)100 static inline int gpio_cansleep(unsigned gpio)
101 {
102 return __gpio_cansleep(gpio);
103 }
104
gpio_to_irq(unsigned gpio)105 static inline int gpio_to_irq(unsigned gpio)
106 {
107 return __gpio_to_irq(gpio);
108 }
109
irq_to_gpio(unsigned irq)110 static inline int irq_to_gpio(unsigned irq)
111 {
112 int tmp;
113
114 /* omap1 SOC mpuio */
115 if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16)))
116 return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES;
117
118 /* SOC gpio */
119 tmp = irq - IH_GPIO_BASE;
120 if (tmp < OMAP_MAX_GPIO_LINES)
121 return tmp;
122
123 /* we don't supply reverse mappings for non-SOC gpios */
124 return -EIO;
125 }
126
127 #endif
128