1/* 2 * arch/arm/mach-lpc32xx/include/mach/gpio.h 3 * 4 * Author: Kevin Wells <kevin.wells@nxp.com> 5 * 6 * Copyright (C) 2010 NXP Semiconductors 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 */ 18 19#ifndef __ASM_ARCH_GPIO_H 20#define __ASM_ARCH_GPIO_H 21 22#include <asm-generic/gpio.h> 23 24/* 25 * Note! 26 * Muxed GP pins need to be setup to the GP state in the board level 27 * code prior to using this driver. 28 * GPI pins : 28xP3 group 29 * GPO pins : 24xP3 group 30 * GPIO pins: 8xP0 group, 24xP1 group, 13xP2 group, 6xP3 group 31 */ 32 33#define LPC32XX_GPIO_P0_MAX 8 34#define LPC32XX_GPIO_P1_MAX 24 35#define LPC32XX_GPIO_P2_MAX 13 36#define LPC32XX_GPIO_P3_MAX 6 37#define LPC32XX_GPI_P3_MAX 28 38#define LPC32XX_GPO_P3_MAX 24 39 40#define LPC32XX_GPIO_P0_GRP 0 41#define LPC32XX_GPIO_P1_GRP (LPC32XX_GPIO_P0_GRP + LPC32XX_GPIO_P0_MAX) 42#define LPC32XX_GPIO_P2_GRP (LPC32XX_GPIO_P1_GRP + LPC32XX_GPIO_P1_MAX) 43#define LPC32XX_GPIO_P3_GRP (LPC32XX_GPIO_P2_GRP + LPC32XX_GPIO_P2_MAX) 44#define LPC32XX_GPI_P3_GRP (LPC32XX_GPIO_P3_GRP + LPC32XX_GPIO_P3_MAX) 45#define LPC32XX_GPO_P3_GRP (LPC32XX_GPI_P3_GRP + LPC32XX_GPI_P3_MAX) 46 47/* 48 * A specific GPIO can be selected with this macro 49 * ie, GPIO_05 can be selected with LPC32XX_GPIO(LPC32XX_GPIO_P3_GRP, 5) 50 * See the LPC32x0 User's guide for GPIO group numbers 51 */ 52#define LPC32XX_GPIO(x, y) ((x) + (y)) 53 54static inline int gpio_get_value(unsigned gpio) 55{ 56 return __gpio_get_value(gpio); 57} 58 59static inline void gpio_set_value(unsigned gpio, int value) 60{ 61 __gpio_set_value(gpio, value); 62} 63 64static inline int gpio_cansleep(unsigned gpio) 65{ 66 return __gpio_cansleep(gpio); 67} 68 69static inline int gpio_to_irq(unsigned gpio) 70{ 71 return __gpio_to_irq(gpio); 72} 73 74#endif 75