1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
/*
* (C) Copyright 2007
* Stefan Roese, DENX Software Engineering, sr@denx.de.
*
* See file CREDITS for list of people who contributed to this
* project.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of
* the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*/
/* 4xx PPC's have 2 GPIO controllers */
#if defined(CONFIG_405EZ) || \
defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
#define GPIO_GROUP_MAX 2
#else
#define GPIO_GROUP_MAX 1
#endif
#define GPIO_MAX 32
#define GPIO_ALT1_SEL 0x40000000
#define GPIO_ALT2_SEL 0x80000000
#define GPIO_ALT3_SEL 0xc0000000
#define GPIO_IN_SEL 0x40000000
#define GPIO_MASK 0xc0000000
#define GPIO_VAL(gpio) (0x80000000 >> (gpio))
#ifndef __ASSEMBLY__
typedef enum gpio_select { GPIO_SEL, GPIO_ALT1, GPIO_ALT2, GPIO_ALT3 } gpio_select_t;
typedef enum gpio_driver { GPIO_DIS, GPIO_IN, GPIO_OUT, GPIO_BI } gpio_driver_t;
typedef enum gpio_out { GPIO_OUT_0, GPIO_OUT_1, GPIO_OUT_NO_CHG } gpio_out_t;
typedef struct {
unsigned long add; /* gpio core base address */
gpio_driver_t in_out; /* Driver Setting */
gpio_select_t alt_nb; /* Selected Alternate */
gpio_out_t out_val;/* Default Output Value */
} gpio_param_s;
#endif
void gpio_config(int pin, int in_out, int gpio_alt, int out_val);
void gpio_write_bit(int pin, int val);
int gpio_read_out_bit(int pin);
void gpio_set_chip_configuration(void);
|
