1 /*
2  * (C) Copyright 2011
3  * eInfochips Ltd. <www.einfochips.com>
4  * Written-by: Ajay Bhargav <ajay.bhargav@einfochips.com>
5  *
6  * (C) Copyright 2010
7  * Marvell Semiconductor <www.marvell.com>
8  *
9  * See file CREDITS for list of people who contributed to this
10  * project.
11  *
12  * This program is free software; you can redistribute it and/or
13  * modify it under the terms of the GNU General Public License as
14  * published by the Free Software Foundation; either version 2 of
15  * the License, or (at your option) any later version.
16  *
17  * This program is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20  * GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License
23  * along with this program; if not, write to the Free Software
24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
25  * MA 02110-1301 USA
26  */
27 
28 #ifndef _ASM_ARCH_GPIO_H
29 #define _ASM_ARCH_GPIO_H
30 
31 #include <asm/types.h>
32 #include <asm/arch/armada100.h>
33 
34 #define GPIO_HIGH		1
35 #define GPIO_LOW		0
36 
37 #define GPIO_TO_REG(gp)		(gp >> 5)
38 #define GPIO_TO_BIT(gp)		(1 << (gp & 0x1F))
39 #define GPIO_VAL(gp, val)	((val >> (gp & 0x1F)) & 0x01)
40 
41 static inline void *get_gpio_base(int bank)
42 {
43 	const unsigned int offset[4] = {0, 4, 8, 0x100};
44 	/* gpio register bank offset - refer Appendix A.36 */
45 	return (struct gpio_reg *)(ARMD1_GPIO_BASE + offset[bank]);
46 }
47 
48 #endif /* _ASM_ARCH_GPIO_H */
49