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 <linux/platform_device.h>
31 #include <mach/irqs.h>
32
33 #define OMAP1_MPUIO_BASE 0xfffb5000
34
35 /*
36 * These are the omap15xx/16xx offsets. The omap7xx offset are
37 * OMAP_MPUIO_ / 2 offsets below.
38 */
39 #define OMAP_MPUIO_INPUT_LATCH 0x00
40 #define OMAP_MPUIO_OUTPUT 0x04
41 #define OMAP_MPUIO_IO_CNTL 0x08
42 #define OMAP_MPUIO_KBR_LATCH 0x10
43 #define OMAP_MPUIO_KBC 0x14
44 #define OMAP_MPUIO_GPIO_EVENT_MODE 0x18
45 #define OMAP_MPUIO_GPIO_INT_EDGE 0x1c
46 #define OMAP_MPUIO_KBD_INT 0x20
47 #define OMAP_MPUIO_GPIO_INT 0x24
48 #define OMAP_MPUIO_KBD_MASKIT 0x28
49 #define OMAP_MPUIO_GPIO_MASKIT 0x2c
50 #define OMAP_MPUIO_GPIO_DEBOUNCING 0x30
51 #define OMAP_MPUIO_LATCH 0x34
52
53 #define OMAP34XX_NR_GPIOS 6
54
55 #define OMAP_MPUIO(nr) (OMAP_MAX_GPIO_LINES + (nr))
56 #define OMAP_GPIO_IS_MPUIO(nr) ((nr) >= OMAP_MAX_GPIO_LINES)
57
58 #define OMAP_GPIO_IRQ(nr) (OMAP_GPIO_IS_MPUIO(nr) ? \
59 IH_MPUIO_BASE + ((nr) & 0x0f) : \
60 IH_GPIO_BASE + (nr))
61
62 #define METHOD_MPUIO 0
63 #define METHOD_GPIO_1510 1
64 #define METHOD_GPIO_1610 2
65 #define METHOD_GPIO_7XX 3
66 #define METHOD_GPIO_24XX 5
67 #define METHOD_GPIO_44XX 6
68
69 struct omap_gpio_dev_attr {
70 int bank_width; /* GPIO bank width */
71 bool dbck_flag; /* dbck required or not - True for OMAP3&4 */
72 };
73
74 struct omap_gpio_platform_data {
75 u16 virtual_irq_start;
76 int bank_type;
77 int bank_width; /* GPIO bank width */
78 int bank_stride; /* Only needed for omap1 MPUIO */
79 bool dbck_flag; /* dbck required or not - True for OMAP3&4 */
80 };
81
82 /* TODO: Analyze removing gpio_bank_count usage from driver code */
83 extern int gpio_bank_count;
84
85 extern void omap2_gpio_prepare_for_idle(int off_mode);
86 extern void omap2_gpio_resume_after_idle(void);
87 extern void omap_set_gpio_debounce(int gpio, int enable);
88 extern void omap_set_gpio_debounce_time(int gpio, int enable);
89 extern void omap_gpio_save_context(void);
90 extern void omap_gpio_restore_context(void);
91 /*-------------------------------------------------------------------------*/
92
93 /* Wrappers for "new style" GPIO calls, using the new infrastructure
94 * which lets us plug in FPGA, I2C, and other implementations.
95 * *
96 * The original OMAP-specific calls should eventually be removed.
97 */
98
99 #include <linux/errno.h>
100 #include <asm-generic/gpio.h>
101
gpio_get_value(unsigned gpio)102 static inline int gpio_get_value(unsigned gpio)
103 {
104 return __gpio_get_value(gpio);
105 }
106
gpio_set_value(unsigned gpio,int value)107 static inline void gpio_set_value(unsigned gpio, int value)
108 {
109 __gpio_set_value(gpio, value);
110 }
111
gpio_cansleep(unsigned gpio)112 static inline int gpio_cansleep(unsigned gpio)
113 {
114 return __gpio_cansleep(gpio);
115 }
116
gpio_to_irq(unsigned gpio)117 static inline int gpio_to_irq(unsigned gpio)
118 {
119 return __gpio_to_irq(gpio);
120 }
121
irq_to_gpio(unsigned irq)122 static inline int irq_to_gpio(unsigned irq)
123 {
124 int tmp;
125
126 /* omap1 SOC mpuio */
127 if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16)))
128 return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES;
129
130 /* SOC gpio */
131 tmp = irq - IH_GPIO_BASE;
132 if (tmp < OMAP_MAX_GPIO_LINES)
133 return tmp;
134
135 /* we don't supply reverse mappings for non-SOC gpios */
136 return -EIO;
137 }
138
139 #endif
140