2004-08-01 22:48:16 +00:00
|
|
|
/*
|
|
|
|
* arch/arm/mach-imx/generic.c
|
|
|
|
*
|
|
|
|
* author: Sascha Hauer
|
|
|
|
* Created: april 20th, 2004
|
|
|
|
* Copyright: Synertronixx GmbH
|
|
|
|
*
|
|
|
|
* Common code for i.MX machines
|
|
|
|
*
|
2013-07-08 07:37:19 +00:00
|
|
|
* SPDX-License-Identifier: GPL-2.0+
|
2004-08-01 22:48:16 +00:00
|
|
|
*/
|
|
|
|
|
|
|
|
#include <common.h>
|
|
|
|
|
|
|
|
#ifdef CONFIG_IMX
|
|
|
|
|
|
|
|
#include <asm/arch/imx-regs.h>
|
|
|
|
|
|
|
|
void imx_gpio_mode(int gpio_mode)
|
|
|
|
{
|
|
|
|
unsigned int pin = gpio_mode & GPIO_PIN_MASK;
|
|
|
|
unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> 5;
|
|
|
|
unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> 10;
|
|
|
|
unsigned int tmp;
|
|
|
|
|
|
|
|
/* Pullup enable */
|
|
|
|
if(gpio_mode & GPIO_PUEN)
|
|
|
|
PUEN(port) |= (1<<pin);
|
|
|
|
else
|
|
|
|
PUEN(port) &= ~(1<<pin);
|
|
|
|
|
|
|
|
/* Data direction */
|
|
|
|
if(gpio_mode & GPIO_OUT)
|
|
|
|
DDIR(port) |= 1<<pin;
|
|
|
|
else
|
|
|
|
DDIR(port) &= ~(1<<pin);
|
|
|
|
|
|
|
|
/* Primary / alternate function */
|
|
|
|
if(gpio_mode & GPIO_AF)
|
|
|
|
GPR(port) |= (1<<pin);
|
|
|
|
else
|
|
|
|
GPR(port) &= ~(1<<pin);
|
|
|
|
|
|
|
|
/* use as gpio? */
|
|
|
|
if( ocr == 3 )
|
|
|
|
GIUS(port) |= (1<<pin);
|
|
|
|
else
|
|
|
|
GIUS(port) &= ~(1<<pin);
|
|
|
|
|
|
|
|
/* Output / input configuration */
|
|
|
|
/* FIXME: I'm not very sure about OCR and ICONF, someone
|
|
|
|
* should have a look over it
|
|
|
|
*/
|
|
|
|
if(pin<16) {
|
|
|
|
tmp = OCR1(port);
|
|
|
|
tmp &= ~( 3<<(pin*2));
|
|
|
|
tmp |= (ocr << (pin*2));
|
|
|
|
OCR1(port) = tmp;
|
|
|
|
|
|
|
|
if( gpio_mode & GPIO_AOUT )
|
|
|
|
ICONFA1(port) &= ~( 3<<(pin*2));
|
|
|
|
if( gpio_mode & GPIO_BOUT )
|
|
|
|
ICONFB1(port) &= ~( 3<<(pin*2));
|
|
|
|
} else {
|
|
|
|
tmp = OCR2(port);
|
|
|
|
tmp &= ~( 3<<((pin-16)*2));
|
|
|
|
tmp |= (ocr << ((pin-16)*2));
|
|
|
|
OCR2(port) = tmp;
|
|
|
|
|
|
|
|
if( gpio_mode & GPIO_AOUT )
|
|
|
|
ICONFA2(port) &= ~( 3<<((pin-16)*2));
|
|
|
|
if( gpio_mode & GPIO_BOUT )
|
|
|
|
ICONFB2(port) &= ~( 3<<((pin-16)*2));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif /* CONFIG_IMX */
|