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3f348c5d GJ |
1 | /* |
2 | * Atheros AR71XX/AR724X/AR913X GPIO button support | |
3 | * | |
4 | * Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org> | |
5 | * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org> | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License version 2 as published | |
9 | * by the Free Software Foundation. | |
10 | */ | |
11 | ||
12 | #include "linux/init.h" | |
13 | #include "linux/slab.h" | |
14 | #include <linux/platform_device.h> | |
15 | ||
16 | #include "dev-gpio-buttons.h" | |
17 | ||
18 | void __init ath79_register_gpio_keys_polled(int id, | |
19 | unsigned poll_interval, | |
20 | unsigned nbuttons, | |
21 | struct gpio_keys_button *buttons) | |
22 | { | |
23 | struct platform_device *pdev; | |
24 | struct gpio_keys_platform_data pdata; | |
25 | struct gpio_keys_button *p; | |
26 | int err; | |
27 | ||
97bf7a19 | 28 | p = kmemdup(buttons, nbuttons * sizeof(*p), GFP_KERNEL); |
3f348c5d GJ |
29 | if (!p) |
30 | return; | |
31 | ||
3f348c5d GJ |
32 | pdev = platform_device_alloc("gpio-keys-polled", id); |
33 | if (!pdev) | |
34 | goto err_free_buttons; | |
35 | ||
36 | memset(&pdata, 0, sizeof(pdata)); | |
37 | pdata.poll_interval = poll_interval; | |
38 | pdata.nbuttons = nbuttons; | |
39 | pdata.buttons = p; | |
40 | ||
41 | err = platform_device_add_data(pdev, &pdata, sizeof(pdata)); | |
42 | if (err) | |
43 | goto err_put_pdev; | |
44 | ||
45 | err = platform_device_add(pdev); | |
46 | if (err) | |
47 | goto err_put_pdev; | |
48 | ||
49 | return; | |
50 | ||
51 | err_put_pdev: | |
52 | platform_device_put(pdev); | |
53 | ||
54 | err_free_buttons: | |
55 | kfree(p); | |
56 | } |