Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 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 <mach/irqs.h> |
| 30 | #include <asm/io.h> |
| 31 | |
Russell King | 7c7095a | 2008-09-05 15:49:14 +0100 | [diff] [blame] | 32 | #define OMAP_MPUIO_BASE 0xfffb5000 |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 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 int omap_request_gpio(int gpio); |
| 75 | extern void omap_free_gpio(int gpio); |
| 76 | extern void omap_set_gpio_direction(int gpio, int is_input); |
| 77 | extern void omap_set_gpio_dataout(int gpio, int enable); |
| 78 | extern int omap_get_gpio_datain(int gpio); |
Tony Lindgren | 646e3ed | 2008-10-06 15:49:36 +0300 | [diff] [blame^] | 79 | extern void omap2_gpio_prepare_for_retention(void); |
| 80 | extern void omap2_gpio_resume_after_retention(void); |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 81 | extern void omap_set_gpio_debounce(int gpio, int enable); |
| 82 | extern void omap_set_gpio_debounce_time(int gpio, int enable); |
| 83 | |
| 84 | /*-------------------------------------------------------------------------*/ |
| 85 | |
| 86 | /* Wrappers for "new style" GPIO calls, using the new infrastructure |
| 87 | * which lets us plug in FPGA, I2C, and other implementations. |
| 88 | * * |
| 89 | * The original OMAP-specfic calls should eventually be removed. |
| 90 | */ |
| 91 | |
| 92 | #include <linux/errno.h> |
| 93 | #include <asm-generic/gpio.h> |
| 94 | |
| 95 | static inline int gpio_get_value(unsigned gpio) |
| 96 | { |
| 97 | return __gpio_get_value(gpio); |
| 98 | } |
| 99 | |
| 100 | static inline void gpio_set_value(unsigned gpio, int value) |
| 101 | { |
| 102 | __gpio_set_value(gpio, value); |
| 103 | } |
| 104 | |
| 105 | static inline int gpio_cansleep(unsigned gpio) |
| 106 | { |
| 107 | return __gpio_cansleep(gpio); |
| 108 | } |
| 109 | |
| 110 | static inline int gpio_to_irq(unsigned gpio) |
| 111 | { |
| 112 | if (gpio < (OMAP_MAX_GPIO_LINES + 16)) |
| 113 | return OMAP_GPIO_IRQ(gpio); |
| 114 | return -EINVAL; |
| 115 | } |
| 116 | |
| 117 | static inline int irq_to_gpio(unsigned irq) |
| 118 | { |
| 119 | if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16))) |
| 120 | return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES; |
| 121 | return irq - IH_GPIO_BASE; |
| 122 | } |
| 123 | |
| 124 | #endif |