1 /*
2 * Coldfire generic GPIO support
3 *
4 * (C) Copyright 2009, Steven King <sfking@fdwdc.com>
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; version 2 of the License.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 */
15
16 #include <linux/kernel.h>
17 #include <linux/init.h>
18
19 #include <asm/coldfire.h>
20 #include <asm/mcfsim.h>
21 #include <asm/mcfgpio.h>
22
23 static struct mcf_gpio_chip mcf_gpio_chips[] = {
24 {
25 .gpio_chip = {
26 .label = "PP",
27 .request = mcf_gpio_request,
28 .free = mcf_gpio_free,
29 .direction_input = mcf_gpio_direction_input,
30 .direction_output = mcf_gpio_direction_output,
31 .get = mcf_gpio_get_value,
32 .set = mcf_gpio_set_value,
33 .ngpio = 8,
34 },
35 .pddr = (void __iomem *) MCFSIM_PADDR,
36 .podr = (void __iomem *) MCFSIM_PADAT,
37 .ppdr = (void __iomem *) MCFSIM_PADAT,
38 },
39 };
40
mcf_gpio_init(void)41 static int __init mcf_gpio_init(void)
42 {
43 unsigned i = 0;
44 while (i < ARRAY_SIZE(mcf_gpio_chips))
45 (void)gpiochip_add((struct gpio_chip *)&mcf_gpio_chips[i++]);
46 return 0;
47 }
48
49 core_initcall(mcf_gpio_init);
50