Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/asm-arm/arch-omap/gpio.h |
| 3 | * |
| 4 | * OMAP GPIO handling defines and functions |
| 5 | * |
Tony Lindgren | 9839c6b | 2005-09-07 17:20:27 +0100 | [diff] [blame] | 6 | * Copyright (C) 2003-2005 Nokia Corporation |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
John Anthony Kazos Jr | 121e70b | 2007-05-09 08:30:57 +0200 | [diff] [blame] | 8 | * Written by Juha Yrjölä <juha.yrjola@nokia.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
Russell King | 0a5709b | 2005-11-16 14:51:20 +0000 | [diff] [blame] | 29 | #include <asm/hardware.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | #include <asm/arch/irqs.h> |
| 31 | #include <asm/io.h> |
| 32 | |
Tony Lindgren | 9839c6b | 2005-09-07 17:20:27 +0100 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 |
Tony Lindgren | 9839c6b | 2005-09-07 17:20:27 +0100 | [diff] [blame] | 63 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 64 | |
Syed Mohammed, Khasim | 5492fb1 | 2007-11-29 16:15:11 -0800 | [diff] [blame] | 65 | #define OMAP34XX_NR_GPIOS 6 |
| 66 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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) : \ |
Tony Lindgren | 9ad5897 | 2005-11-10 14:26:53 +0000 | [diff] [blame] | 72 | IH_GPIO_BASE + (nr)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 73 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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); |
Kevin Hilman | 5eb3bb9 | 2007-05-05 11:40:29 -0700 | [diff] [blame] | 80 | extern void omap_set_gpio_debounce(int gpio, int enable); |
| 81 | extern void omap_set_gpio_debounce_time(int gpio, int enable); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
David Brownell | 3c729f1 | 2007-02-12 00:53:12 -0800 | [diff] [blame] | 83 | /*-------------------------------------------------------------------------*/ |
| 84 | |
| 85 | /* wrappers for "new style" GPIO calls. the old OMAP-specfic ones should |
| 86 | * eventually be removed (along with this errno.h inclusion), and maybe |
| 87 | * gpios should put MPUIOs last too. |
| 88 | */ |
| 89 | |
| 90 | #include <asm/errno.h> |
| 91 | |
| 92 | static inline int gpio_request(unsigned gpio, const char *label) |
| 93 | { |
| 94 | return omap_request_gpio(gpio); |
| 95 | } |
| 96 | |
| 97 | static inline void gpio_free(unsigned gpio) |
| 98 | { |
| 99 | omap_free_gpio(gpio); |
| 100 | } |
| 101 | |
| 102 | static inline int __gpio_set_direction(unsigned gpio, int is_input) |
| 103 | { |
| 104 | if (cpu_class_is_omap2()) { |
| 105 | if (gpio > OMAP_MAX_GPIO_LINES) |
| 106 | return -EINVAL; |
| 107 | } else { |
| 108 | if (gpio > (OMAP_MAX_GPIO_LINES + 16 /* MPUIO */)) |
| 109 | return -EINVAL; |
| 110 | } |
| 111 | omap_set_gpio_direction(gpio, is_input); |
| 112 | return 0; |
| 113 | } |
| 114 | |
| 115 | static inline int gpio_direction_input(unsigned gpio) |
| 116 | { |
| 117 | return __gpio_set_direction(gpio, 1); |
| 118 | } |
| 119 | |
David Brownell | 28735a7 | 2007-03-16 13:38:14 -0800 | [diff] [blame] | 120 | static inline int gpio_direction_output(unsigned gpio, int value) |
David Brownell | 3c729f1 | 2007-02-12 00:53:12 -0800 | [diff] [blame] | 121 | { |
David Brownell | 28735a7 | 2007-03-16 13:38:14 -0800 | [diff] [blame] | 122 | omap_set_gpio_dataout(gpio, value); |
David Brownell | 3c729f1 | 2007-02-12 00:53:12 -0800 | [diff] [blame] | 123 | return __gpio_set_direction(gpio, 0); |
| 124 | } |
| 125 | |
| 126 | static inline int gpio_get_value(unsigned gpio) |
| 127 | { |
| 128 | return omap_get_gpio_datain(gpio); |
| 129 | } |
| 130 | |
| 131 | static inline void gpio_set_value(unsigned gpio, int value) |
| 132 | { |
| 133 | omap_set_gpio_dataout(gpio, value); |
| 134 | } |
| 135 | |
| 136 | #include <asm-generic/gpio.h> /* cansleep wrappers */ |
| 137 | |
| 138 | static inline int gpio_to_irq(unsigned gpio) |
| 139 | { |
| 140 | return OMAP_GPIO_IRQ(gpio); |
| 141 | } |
| 142 | |
| 143 | static inline int irq_to_gpio(unsigned irq) |
| 144 | { |
| 145 | if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16))) |
| 146 | return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES; |
| 147 | return irq - IH_GPIO_BASE; |
| 148 | } |
| 149 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | #endif |