7ca7dc9b38e7b5875e1e6e3e7e45c3fa210376fe
2 * Copyright (C) 2007 Felix Fietkau, Eugene Konev
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 #include <linux/module.h>
21 #include <asm/ar7/gpio.h>
23 static const char *ar7_gpio_list
[AR7_GPIO_MAX
] = { 0, };
25 int gpio_request(unsigned gpio
, const char *label
)
27 if (gpio
>= AR7_GPIO_MAX
)
30 if (ar7_gpio_list
[gpio
])
34 ar7_gpio_list
[gpio
] = label
;
36 ar7_gpio_list
[gpio
] = "busy";
41 EXPORT_SYMBOL(gpio_request
);
43 void gpio_free(unsigned gpio
)
45 BUG_ON(!ar7_gpio_list
[gpio
]);
46 ar7_gpio_list
[gpio
] = NULL
;
48 EXPORT_SYMBOL(gpio_free
);
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