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gpio-lpc32xx.h
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1 /*
2  * Author: Kevin Wells <[email protected]>
3  *
4  * Copyright (C) 2010 NXP Semiconductors
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  */
16 
17 #ifndef __MACH_GPIO_LPC32XX_H
18 #define __MACH_GPIO_LPC32XX_H
19 
20 /*
21  * Note!
22  * Muxed GP pins need to be setup to the GP state in the board level
23  * code prior to using this driver.
24  * GPI pins : 28xP3 group
25  * GPO pins : 24xP3 group
26  * GPIO pins: 8xP0 group, 24xP1 group, 13xP2 group, 6xP3 group
27  */
28 
29 #define LPC32XX_GPIO_P0_MAX 8
30 #define LPC32XX_GPIO_P1_MAX 24
31 #define LPC32XX_GPIO_P2_MAX 13
32 #define LPC32XX_GPIO_P3_MAX 6
33 #define LPC32XX_GPI_P3_MAX 29
34 #define LPC32XX_GPO_P3_MAX 24
35 
36 #define LPC32XX_GPIO_P0_GRP 0
37 #define LPC32XX_GPIO_P1_GRP (LPC32XX_GPIO_P0_GRP + LPC32XX_GPIO_P0_MAX)
38 #define LPC32XX_GPIO_P2_GRP (LPC32XX_GPIO_P1_GRP + LPC32XX_GPIO_P1_MAX)
39 #define LPC32XX_GPIO_P3_GRP (LPC32XX_GPIO_P2_GRP + LPC32XX_GPIO_P2_MAX)
40 #define LPC32XX_GPI_P3_GRP (LPC32XX_GPIO_P3_GRP + LPC32XX_GPIO_P3_MAX)
41 #define LPC32XX_GPO_P3_GRP (LPC32XX_GPI_P3_GRP + LPC32XX_GPI_P3_MAX)
42 
43 /*
44  * A specific GPIO can be selected with this macro
45  * ie, GPIO_05 can be selected with LPC32XX_GPIO(LPC32XX_GPIO_P3_GRP, 5)
46  * See the LPC32x0 User's guide for GPIO group numbers
47  */
48 #define LPC32XX_GPIO(x, y) ((x) + (y))
49 
50 #endif /* __MACH_GPIO_LPC32XX_H */