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 | |
Russell King | fced80c | 2008-09-06 12:10:45 +0100 | [diff] [blame] | 29 | #include <linux/io.h> |
Varadarajan, Charulatha | c95d10b | 2010-12-07 16:26:56 -0800 | [diff] [blame] | 30 | #include <linux/platform_device.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 31 | #include <mach/irqs.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 32 | |
Tony Lindgren | 6175556 | 2009-08-28 10:50:34 -0700 | [diff] [blame] | 33 | #define OMAP1_MPUIO_BASE 0xfffb5000 |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 34 | |
Tony Lindgren | 5de62b8 | 2010-12-07 16:26:58 -0800 | [diff] [blame] | 35 | /* |
| 36 | * These are the omap15xx/16xx offsets. The omap7xx offset are |
| 37 | * OMAP_MPUIO_ / 2 offsets below. |
| 38 | */ |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 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 |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 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 | |
Varadarajan, Charulatha | c95d10b | 2010-12-07 16:26:56 -0800 | [diff] [blame] | 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 | |
Varadarajan, Charulatha | 59c348c | 2010-12-07 16:26:56 -0800 | [diff] [blame] | 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 | |
Varadarajan, Charulatha | c95d10b | 2010-12-07 16:26:56 -0800 | [diff] [blame] | 74 | struct omap_gpio_platform_data { |
| 75 | u16 virtual_irq_start; |
| 76 | int bank_type; |
| 77 | int bank_width; /* GPIO bank width */ |
Tony Lindgren | 5de62b8 | 2010-12-07 16:26:58 -0800 | [diff] [blame] | 78 | int bank_stride; /* Only needed for omap1 MPUIO */ |
Varadarajan, Charulatha | c95d10b | 2010-12-07 16:26:56 -0800 | [diff] [blame] | 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 | |
Paul Walmsley | 72e06d0 | 2010-12-21 21:05:16 -0700 | [diff] [blame] | 85 | extern void omap2_gpio_prepare_for_idle(int off_mode); |
Kevin Hilman | 43ffcd9 | 2009-01-27 11:09:24 -0800 | [diff] [blame] | 86 | extern void omap2_gpio_resume_after_idle(void); |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 87 | extern void omap_set_gpio_debounce(int gpio, int enable); |
| 88 | extern void omap_set_gpio_debounce_time(int gpio, int enable); |
Rajendra Nayak | 40c670f | 2008-09-26 17:47:48 +0530 | [diff] [blame] | 89 | extern void omap_gpio_save_context(void); |
| 90 | extern void omap_gpio_restore_context(void); |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 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-specfic calls should eventually be removed. |
| 97 | */ |
| 98 | |
| 99 | #include <linux/errno.h> |
| 100 | #include <asm-generic/gpio.h> |
| 101 | |
| 102 | static inline int gpio_get_value(unsigned gpio) |
| 103 | { |
| 104 | return __gpio_get_value(gpio); |
| 105 | } |
| 106 | |
| 107 | static inline void gpio_set_value(unsigned gpio, int value) |
| 108 | { |
| 109 | __gpio_set_value(gpio, value); |
| 110 | } |
| 111 | |
| 112 | static inline int gpio_cansleep(unsigned gpio) |
| 113 | { |
| 114 | return __gpio_cansleep(gpio); |
| 115 | } |
| 116 | |
| 117 | static inline int gpio_to_irq(unsigned gpio) |
| 118 | { |
David Brownell | a007b70 | 2008-12-10 17:35:25 -0800 | [diff] [blame] | 119 | return __gpio_to_irq(gpio); |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 120 | } |
| 121 | |
| 122 | static inline int irq_to_gpio(unsigned irq) |
| 123 | { |
David Brownell | a007b70 | 2008-12-10 17:35:25 -0800 | [diff] [blame] | 124 | int tmp; |
| 125 | |
| 126 | /* omap1 SOC mpuio */ |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 127 | if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16))) |
| 128 | return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES; |
David Brownell | a007b70 | 2008-12-10 17:35:25 -0800 | [diff] [blame] | 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; |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 137 | } |
| 138 | |
| 139 | #endif |