1*84ad6884SPeter Tyser /* 2*84ad6884SPeter Tyser * arch/arm/mach-imx/generic.c 3*84ad6884SPeter Tyser * 4*84ad6884SPeter Tyser * author: Sascha Hauer 5*84ad6884SPeter Tyser * Created: april 20th, 2004 6*84ad6884SPeter Tyser * Copyright: Synertronixx GmbH 7*84ad6884SPeter Tyser * 8*84ad6884SPeter Tyser * Common code for i.MX machines 9*84ad6884SPeter Tyser * 10*84ad6884SPeter Tyser * This program is free software; you can redistribute it and/or modify 11*84ad6884SPeter Tyser * it under the terms of the GNU General Public License as published by 12*84ad6884SPeter Tyser * the Free Software Foundation; either version 2 of the License, or 13*84ad6884SPeter Tyser * (at your option) any later version. 14*84ad6884SPeter Tyser * 15*84ad6884SPeter Tyser * This program is distributed in the hope that it will be useful, 16*84ad6884SPeter Tyser * but WITHOUT ANY WARRANTY; without even the implied warranty of 17*84ad6884SPeter Tyser * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18*84ad6884SPeter Tyser * GNU General Public License for more details. 19*84ad6884SPeter Tyser * 20*84ad6884SPeter Tyser * You should have received a copy of the GNU General Public License 21*84ad6884SPeter Tyser * along with this program; if not, write to the Free Software 22*84ad6884SPeter Tyser * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23*84ad6884SPeter Tyser * 24*84ad6884SPeter Tyser */ 25*84ad6884SPeter Tyser 26*84ad6884SPeter Tyser #include <common.h> 27*84ad6884SPeter Tyser 28*84ad6884SPeter Tyser #ifdef CONFIG_IMX 29*84ad6884SPeter Tyser 30*84ad6884SPeter Tyser #include <asm/arch/imx-regs.h> 31*84ad6884SPeter Tyser 32*84ad6884SPeter Tyser void imx_gpio_mode(int gpio_mode) 33*84ad6884SPeter Tyser { 34*84ad6884SPeter Tyser unsigned int pin = gpio_mode & GPIO_PIN_MASK; 35*84ad6884SPeter Tyser unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> 5; 36*84ad6884SPeter Tyser unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> 10; 37*84ad6884SPeter Tyser unsigned int tmp; 38*84ad6884SPeter Tyser 39*84ad6884SPeter Tyser /* Pullup enable */ 40*84ad6884SPeter Tyser if(gpio_mode & GPIO_PUEN) 41*84ad6884SPeter Tyser PUEN(port) |= (1<<pin); 42*84ad6884SPeter Tyser else 43*84ad6884SPeter Tyser PUEN(port) &= ~(1<<pin); 44*84ad6884SPeter Tyser 45*84ad6884SPeter Tyser /* Data direction */ 46*84ad6884SPeter Tyser if(gpio_mode & GPIO_OUT) 47*84ad6884SPeter Tyser DDIR(port) |= 1<<pin; 48*84ad6884SPeter Tyser else 49*84ad6884SPeter Tyser DDIR(port) &= ~(1<<pin); 50*84ad6884SPeter Tyser 51*84ad6884SPeter Tyser /* Primary / alternate function */ 52*84ad6884SPeter Tyser if(gpio_mode & GPIO_AF) 53*84ad6884SPeter Tyser GPR(port) |= (1<<pin); 54*84ad6884SPeter Tyser else 55*84ad6884SPeter Tyser GPR(port) &= ~(1<<pin); 56*84ad6884SPeter Tyser 57*84ad6884SPeter Tyser /* use as gpio? */ 58*84ad6884SPeter Tyser if( ocr == 3 ) 59*84ad6884SPeter Tyser GIUS(port) |= (1<<pin); 60*84ad6884SPeter Tyser else 61*84ad6884SPeter Tyser GIUS(port) &= ~(1<<pin); 62*84ad6884SPeter Tyser 63*84ad6884SPeter Tyser /* Output / input configuration */ 64*84ad6884SPeter Tyser /* FIXME: I'm not very sure about OCR and ICONF, someone 65*84ad6884SPeter Tyser * should have a look over it 66*84ad6884SPeter Tyser */ 67*84ad6884SPeter Tyser if(pin<16) { 68*84ad6884SPeter Tyser tmp = OCR1(port); 69*84ad6884SPeter Tyser tmp &= ~( 3<<(pin*2)); 70*84ad6884SPeter Tyser tmp |= (ocr << (pin*2)); 71*84ad6884SPeter Tyser OCR1(port) = tmp; 72*84ad6884SPeter Tyser 73*84ad6884SPeter Tyser if( gpio_mode & GPIO_AOUT ) 74*84ad6884SPeter Tyser ICONFA1(port) &= ~( 3<<(pin*2)); 75*84ad6884SPeter Tyser if( gpio_mode & GPIO_BOUT ) 76*84ad6884SPeter Tyser ICONFB1(port) &= ~( 3<<(pin*2)); 77*84ad6884SPeter Tyser } else { 78*84ad6884SPeter Tyser tmp = OCR2(port); 79*84ad6884SPeter Tyser tmp &= ~( 3<<((pin-16)*2)); 80*84ad6884SPeter Tyser tmp |= (ocr << ((pin-16)*2)); 81*84ad6884SPeter Tyser OCR2(port) = tmp; 82*84ad6884SPeter Tyser 83*84ad6884SPeter Tyser if( gpio_mode & GPIO_AOUT ) 84*84ad6884SPeter Tyser ICONFA2(port) &= ~( 3<<((pin-16)*2)); 85*84ad6884SPeter Tyser if( gpio_mode & GPIO_BOUT ) 86*84ad6884SPeter Tyser ICONFB2(port) &= ~( 3<<((pin-16)*2)); 87*84ad6884SPeter Tyser } 88*84ad6884SPeter Tyser } 89*84ad6884SPeter Tyser 90*84ad6884SPeter Tyser #endif /* CONFIG_IMX */ 91