blob: c9b6a36b4f95a3934041d9ba713e1b5033deda26 [file] [log] [blame]
Stefan Roese0d974d52007-03-24 15:57:09 +01001/*
2 * (C) Copyright 2007
3 * Stefan Roese, DENX Software Engineering, sr@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
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 * 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,
21 * MA 02111-1307 USA
22 */
23
24/* 4xx PPC's have 2 GPIO controllers */
25#if defined(CONFIG_405EZ) || \
26 defined(CONFIG_440EP) || defined(CONFIG_440GR) || \
27 defined(CONFIG_440EPX) || defined(CONFIG_440GRX)
28#define GPIO_GROUP_MAX 2
29#else
30#define GPIO_GROUP_MAX 1
31#endif
32
33#define GPIO_MAX 32
34#define GPIO_ALT1_SEL 0x40000000
35#define GPIO_ALT2_SEL 0x80000000
36#define GPIO_ALT3_SEL 0xc0000000
37#define GPIO_IN_SEL 0x40000000
38#define GPIO_MASK 0xc0000000
39
40#define GPIO_VAL(gpio) (0x80000000 >> (gpio))
41
42#ifndef __ASSEMBLY__
43typedef enum gpio_select { GPIO_SEL, GPIO_ALT1, GPIO_ALT2, GPIO_ALT3 } gpio_select_t;
44typedef enum gpio_driver { GPIO_DIS, GPIO_IN, GPIO_OUT, GPIO_BI } gpio_driver_t;
45typedef enum gpio_out { GPIO_OUT_0, GPIO_OUT_1, GPIO_OUT_NO_CHG } gpio_out_t;
46
47typedef struct {
Stefan Roese85f73732007-06-15 07:39:43 +020048 unsigned long add; /* gpio core base address */
49 gpio_driver_t in_out; /* Driver Setting */
50 gpio_select_t alt_nb; /* Selected Alternate */
51 gpio_out_t out_val;/* Default Output Value */
Stefan Roese0d974d52007-03-24 15:57:09 +010052} gpio_param_s;
53#endif
54
55void gpio_config(int pin, int in_out, int gpio_alt, int out_val);
56void gpio_write_bit(int pin, int val);
Stefan Roese85f73732007-06-15 07:39:43 +020057int gpio_read_out_bit(int pin);
Stefan Roese0d974d52007-03-24 15:57:09 +010058void gpio_set_chip_configuration(void);