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/imx-regs.h>
29 /* GPIO port description */
30 static unsigned long gpio_ports[] = {
31 [0] = GPIO1_BASE_ADDR,
32 [1] = GPIO2_BASE_ADDR,
33 [2] = GPIO3_BASE_ADDR,
34 #if defined(CONFIG_MX51) || defined(CONFIG_MX53)
35 [3] = GPIO4_BASE_ADDR,
37 #if defined(CONFIG_MX53)
38 [4] = GPIO5_BASE_ADDR,
39 [5] = GPIO6_BASE_ADDR,
40 [6] = GPIO7_BASE_ADDR,
44 int mxc_gpio_direction(unsigned int gpio, enum mxc_gpio_direction direction)
46 unsigned int port = gpio >> 5;
47 struct gpio_regs *regs;
50 if (port >= ARRAY_SIZE(gpio_ports))
55 regs = (struct gpio_regs *)gpio_ports[port];
57 l = readl(®s->gpio_dir);
60 case MXC_GPIO_DIRECTION_OUT:
63 case MXC_GPIO_DIRECTION_IN:
66 writel(l, ®s->gpio_dir);
71 void mxc_gpio_set(unsigned int gpio, unsigned int value)
73 unsigned int port = gpio >> 5;
74 struct gpio_regs *regs;
77 if (port >= ARRAY_SIZE(gpio_ports))
82 regs = (struct gpio_regs *)gpio_ports[port];
84 l = readl(®s->gpio_dr);
89 writel(l, ®s->gpio_dr);
92 int mxc_gpio_get(unsigned int gpio)
94 unsigned int port = gpio >> 5;
95 struct gpio_regs *regs;
98 if (port >= ARRAY_SIZE(gpio_ports))
103 regs = (struct gpio_regs *)gpio_ports[port];
105 l = (readl(®s->gpio_dr) >> gpio) & 0x01;