diff options
Diffstat (limited to 'arch/arm/plat-omap/include/mach/gpio.h')
| -rw-r--r-- | arch/arm/plat-omap/include/mach/gpio.h | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/arch/arm/plat-omap/include/mach/gpio.h b/arch/arm/plat-omap/include/mach/gpio.h new file mode 100644 index 00000000000..98e9008b7e9 --- /dev/null +++ b/arch/arm/plat-omap/include/mach/gpio.h @@ -0,0 +1,124 @@ +/* + * arch/arm/plat-omap/include/mach/gpio.h + * + * OMAP GPIO handling defines and functions + * + * Copyright (C) 2003-2005 Nokia Corporation + * + * Written by Juha Yrjölä <juha.yrjola@nokia.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#ifndef __ASM_ARCH_OMAP_GPIO_H +#define __ASM_ARCH_OMAP_GPIO_H + +#include <linux/io.h> +#include <mach/irqs.h> + +#define OMAP_MPUIO_BASE 0xfffb5000 + +#ifdef CONFIG_ARCH_OMAP730 +#define OMAP_MPUIO_INPUT_LATCH 0x00 +#define OMAP_MPUIO_OUTPUT 0x02 +#define OMAP_MPUIO_IO_CNTL 0x04 +#define OMAP_MPUIO_KBR_LATCH 0x08 +#define OMAP_MPUIO_KBC 0x0a +#define OMAP_MPUIO_GPIO_EVENT_MODE 0x0c +#define OMAP_MPUIO_GPIO_INT_EDGE 0x0e +#define OMAP_MPUIO_KBD_INT 0x10 +#define OMAP_MPUIO_GPIO_INT 0x12 +#define OMAP_MPUIO_KBD_MASKIT 0x14 +#define OMAP_MPUIO_GPIO_MASKIT 0x16 +#define OMAP_MPUIO_GPIO_DEBOUNCING 0x18 +#define OMAP_MPUIO_LATCH 0x1a +#else +#define OMAP_MPUIO_INPUT_LATCH 0x00 +#define OMAP_MPUIO_OUTPUT 0x04 +#define OMAP_MPUIO_IO_CNTL 0x08 +#define OMAP_MPUIO_KBR_LATCH 0x10 +#define OMAP_MPUIO_KBC 0x14 +#define OMAP_MPUIO_GPIO_EVENT_MODE 0x18 +#define OMAP_MPUIO_GPIO_INT_EDGE 0x1c +#define OMAP_MPUIO_KBD_INT 0x20 +#define OMAP_MPUIO_GPIO_INT 0x24 +#define OMAP_MPUIO_KBD_MASKIT 0x28 +#define OMAP_MPUIO_GPIO_MASKIT 0x2c +#define OMAP_MPUIO_GPIO_DEBOUNCING 0x30 +#define OMAP_MPUIO_LATCH 0x34 +#endif + +#define OMAP34XX_NR_GPIOS 6 + +#define OMAP_MPUIO(nr) (OMAP_MAX_GPIO_LINES + (nr)) +#define OMAP_GPIO_IS_MPUIO(nr) ((nr) >= OMAP_MAX_GPIO_LINES) + +#define OMAP_GPIO_IRQ(nr) (OMAP_GPIO_IS_MPUIO(nr) ? \ + IH_MPUIO_BASE + ((nr) & 0x0f) : \ + IH_GPIO_BASE + (nr)) + +extern int omap_gpio_init(void); /* Call from board init only */ +extern int omap_request_gpio(int gpio); +extern void omap_free_gpio(int gpio); +extern void omap_set_gpio_direction(int gpio, int is_input); +extern void omap_set_gpio_dataout(int gpio, int enable); +extern int omap_get_gpio_datain(int gpio); +extern void omap2_gpio_prepare_for_retention(void); +extern void omap2_gpio_resume_after_retention(void); +extern void omap_set_gpio_debounce(int gpio, int enable); +extern void omap_set_gpio_debounce_time(int gpio, int enable); + +/*-------------------------------------------------------------------------*/ + +/* Wrappers for "new style" GPIO calls, using the new infrastructure + * which lets us plug in FPGA, I2C, and other implementations. + * * + * The original OMAP-specfic calls should eventually be removed. + */ + +#include <linux/errno.h> +#include <asm-generic/gpio.h> + +static inline int gpio_get_value(unsigned gpio) +{ + return __gpio_get_value(gpio); +} + +static inline void gpio_set_value(unsigned gpio, int value) +{ + __gpio_set_value(gpio, value); +} + +static inline int gpio_cansleep(unsigned gpio) +{ + return __gpio_cansleep(gpio); +} + +static inline int gpio_to_irq(unsigned gpio) +{ + if (gpio < (OMAP_MAX_GPIO_LINES + 16)) + return OMAP_GPIO_IRQ(gpio); + return -EINVAL; +} + +static inline int irq_to_gpio(unsigned irq) +{ + if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16))) + return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES; + return irq - IH_GPIO_BASE; +} + +#endif |