1*83d290c5STom Rini // SPDX-License-Identifier: GPL-2.0+ 284ad6884SPeter Tyser /* 384ad6884SPeter Tyser * arch/arm/mach-imx/generic.c 484ad6884SPeter Tyser * 584ad6884SPeter Tyser * author: Sascha Hauer 684ad6884SPeter Tyser * Created: april 20th, 2004 784ad6884SPeter Tyser * Copyright: Synertronixx GmbH 884ad6884SPeter Tyser * 984ad6884SPeter Tyser * Common code for i.MX machines 1084ad6884SPeter Tyser */ 1184ad6884SPeter Tyser 1284ad6884SPeter Tyser #include <common.h> 1384ad6884SPeter Tyser 1484ad6884SPeter Tyser #ifdef CONFIG_IMX 1584ad6884SPeter Tyser 1684ad6884SPeter Tyser #include <asm/arch/imx-regs.h> 1784ad6884SPeter Tyser imx_gpio_mode(int gpio_mode)1884ad6884SPeter Tyservoid imx_gpio_mode(int gpio_mode) 1984ad6884SPeter Tyser { 2084ad6884SPeter Tyser unsigned int pin = gpio_mode & GPIO_PIN_MASK; 2184ad6884SPeter Tyser unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> 5; 2284ad6884SPeter Tyser unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> 10; 2384ad6884SPeter Tyser unsigned int tmp; 2484ad6884SPeter Tyser 2584ad6884SPeter Tyser /* Pullup enable */ 2684ad6884SPeter Tyser if(gpio_mode & GPIO_PUEN) 2784ad6884SPeter Tyser PUEN(port) |= (1<<pin); 2884ad6884SPeter Tyser else 2984ad6884SPeter Tyser PUEN(port) &= ~(1<<pin); 3084ad6884SPeter Tyser 3184ad6884SPeter Tyser /* Data direction */ 3284ad6884SPeter Tyser if(gpio_mode & GPIO_OUT) 3384ad6884SPeter Tyser DDIR(port) |= 1<<pin; 3484ad6884SPeter Tyser else 3584ad6884SPeter Tyser DDIR(port) &= ~(1<<pin); 3684ad6884SPeter Tyser 3784ad6884SPeter Tyser /* Primary / alternate function */ 3884ad6884SPeter Tyser if(gpio_mode & GPIO_AF) 3984ad6884SPeter Tyser GPR(port) |= (1<<pin); 4084ad6884SPeter Tyser else 4184ad6884SPeter Tyser GPR(port) &= ~(1<<pin); 4284ad6884SPeter Tyser 4384ad6884SPeter Tyser /* use as gpio? */ 4484ad6884SPeter Tyser if( ocr == 3 ) 4584ad6884SPeter Tyser GIUS(port) |= (1<<pin); 4684ad6884SPeter Tyser else 4784ad6884SPeter Tyser GIUS(port) &= ~(1<<pin); 4884ad6884SPeter Tyser 4984ad6884SPeter Tyser /* Output / input configuration */ 5084ad6884SPeter Tyser /* FIXME: I'm not very sure about OCR and ICONF, someone 5184ad6884SPeter Tyser * should have a look over it 5284ad6884SPeter Tyser */ 5384ad6884SPeter Tyser if(pin<16) { 5484ad6884SPeter Tyser tmp = OCR1(port); 5584ad6884SPeter Tyser tmp &= ~( 3<<(pin*2)); 5684ad6884SPeter Tyser tmp |= (ocr << (pin*2)); 5784ad6884SPeter Tyser OCR1(port) = tmp; 5884ad6884SPeter Tyser 5984ad6884SPeter Tyser if( gpio_mode & GPIO_AOUT ) 6084ad6884SPeter Tyser ICONFA1(port) &= ~( 3<<(pin*2)); 6184ad6884SPeter Tyser if( gpio_mode & GPIO_BOUT ) 6284ad6884SPeter Tyser ICONFB1(port) &= ~( 3<<(pin*2)); 6384ad6884SPeter Tyser } else { 6484ad6884SPeter Tyser tmp = OCR2(port); 6584ad6884SPeter Tyser tmp &= ~( 3<<((pin-16)*2)); 6684ad6884SPeter Tyser tmp |= (ocr << ((pin-16)*2)); 6784ad6884SPeter Tyser OCR2(port) = tmp; 6884ad6884SPeter Tyser 6984ad6884SPeter Tyser if( gpio_mode & GPIO_AOUT ) 7084ad6884SPeter Tyser ICONFA2(port) &= ~( 3<<((pin-16)*2)); 7184ad6884SPeter Tyser if( gpio_mode & GPIO_BOUT ) 7284ad6884SPeter Tyser ICONFB2(port) &= ~( 3<<((pin-16)*2)); 7384ad6884SPeter Tyser } 7484ad6884SPeter Tyser } 7584ad6884SPeter Tyser 7684ad6884SPeter Tyser #endif /* CONFIG_IMX */ 77