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>
28 /* GPIO port description */
29 static unsigned long gpio_ports[] = {
30 [0] = GPIO1_BASE_ADDR,
31 [1] = GPIO2_BASE_ADDR,
32 [2] = GPIO3_BASE_ADDR,
33 #if defined(CONFIG_MX51) || defined(CONFIG_MX53)
34 [3] = GPIO4_BASE_ADDR,
36 #if defined(CONFIG_MX53)
37 [4] = GPIO5_BASE_ADDR,
38 [5] = GPIO6_BASE_ADDR,
39 [6] = GPIO7_BASE_ADDR,
43 int mxc_gpio_direction(unsigned int gpio, enum mxc_gpio_direction direction)
45 unsigned int port = gpio >> 5;
46 struct gpio_regs *regs;
49 if (port >= ARRAY_SIZE(gpio_ports))
54 regs = (struct gpio_regs *)gpio_ports[port];
56 l = readl(®s->gpio_dir);
59 case MXC_GPIO_DIRECTION_OUT:
62 case MXC_GPIO_DIRECTION_IN:
65 writel(l, ®s->gpio_dir);
70 void mxc_gpio_set(unsigned int gpio, unsigned int value)
72 unsigned int port = gpio >> 5;
73 struct gpio_regs *regs;
76 if (port >= ARRAY_SIZE(gpio_ports))
81 regs = (struct gpio_regs *)gpio_ports[port];
83 l = readl(®s->gpio_dr);
88 writel(l, ®s->gpio_dr);
91 int mxc_gpio_get(unsigned int gpio)
93 unsigned int port = gpio >> 5;
94 struct gpio_regs *regs;
97 if (port >= ARRAY_SIZE(gpio_ports))
102 regs = (struct gpio_regs *)gpio_ports[port];
104 l = (readl(®s->gpio_dr) >> gpio) & 0x01;