3 * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
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.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
24 #include <asm/arch/mx31.h>
25 #include <asm/arch/mx31-regs.h>
27 /* GPIO port description */
28 static unsigned long gpio_ports[] = {
34 int mx31_gpio_direction(unsigned int gpio, enum mx31_gpio_direction direction)
36 unsigned int port = gpio >> 5;
39 if (port >= ARRAY_SIZE(gpio_ports))
44 l = __REG(gpio_ports[port] + GPIO_GDIR);
46 case MX31_GPIO_DIRECTION_OUT:
49 case MX31_GPIO_DIRECTION_IN:
52 __REG(gpio_ports[port] + GPIO_GDIR) = l;
57 void mx31_gpio_set(unsigned int gpio, unsigned int value)
59 unsigned int port = gpio >> 5;
62 if (port >= ARRAY_SIZE(gpio_ports))
67 l = __REG(gpio_ports[port] + GPIO_DR);
72 __REG(gpio_ports[port] + GPIO_DR) = l;