1 /*
2 * arch/arm/mach-lpc32xx/include/mach/gpio.h
3 *
4 * Author: Kevin Wells <kevin.wells@nxp.com>
5 *
6 * Copyright (C) 2010 NXP Semiconductors
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
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.
17 */
18
19 #ifndef __ASM_ARCH_GPIO_H
20 #define __ASM_ARCH_GPIO_H
21
22 #include <asm-generic/gpio.h>
23
24 /*
25 * Note!
26 * Muxed GP pins need to be setup to the GP state in the board level
27 * code prior to using this driver.
28 * GPI pins : 28xP3 group
29 * GPO pins : 24xP3 group
30 * GPIO pins: 8xP0 group, 24xP1 group, 13xP2 group, 6xP3 group
31 */
32
33 #define LPC32XX_GPIO_P0_MAX 8
34 #define LPC32XX_GPIO_P1_MAX 24
35 #define LPC32XX_GPIO_P2_MAX 13
36 #define LPC32XX_GPIO_P3_MAX 6
37 #define LPC32XX_GPI_P3_MAX 28
38 #define LPC32XX_GPO_P3_MAX 24
39
40 #define LPC32XX_GPIO_P0_GRP 0
41 #define LPC32XX_GPIO_P1_GRP (LPC32XX_GPIO_P0_GRP + LPC32XX_GPIO_P0_MAX)
42 #define LPC32XX_GPIO_P2_GRP (LPC32XX_GPIO_P1_GRP + LPC32XX_GPIO_P1_MAX)
43 #define LPC32XX_GPIO_P3_GRP (LPC32XX_GPIO_P2_GRP + LPC32XX_GPIO_P2_MAX)
44 #define LPC32XX_GPI_P3_GRP (LPC32XX_GPIO_P3_GRP + LPC32XX_GPIO_P3_MAX)
45 #define LPC32XX_GPO_P3_GRP (LPC32XX_GPI_P3_GRP + LPC32XX_GPI_P3_MAX)
46
47 /*
48 * A specific GPIO can be selected with this macro
49 * ie, GPIO_05 can be selected with LPC32XX_GPIO(LPC32XX_GPIO_P3_GRP, 5)
50 * See the LPC32x0 User's guide for GPIO group numbers
51 */
52 #define LPC32XX_GPIO(x, y) ((x) + (y))
53
gpio_get_value(unsigned gpio)54 static inline int gpio_get_value(unsigned gpio)
55 {
56 return __gpio_get_value(gpio);
57 }
58
gpio_set_value(unsigned gpio,int value)59 static inline void gpio_set_value(unsigned gpio, int value)
60 {
61 __gpio_set_value(gpio, value);
62 }
63
gpio_cansleep(unsigned gpio)64 static inline int gpio_cansleep(unsigned gpio)
65 {
66 return __gpio_cansleep(gpio);
67 }
68
gpio_to_irq(unsigned gpio)69 static inline int gpio_to_irq(unsigned gpio)
70 {
71 return __gpio_to_irq(gpio);
72 }
73
74 #endif
75