| 1 | /* |
| 2 | * Lantiq GPIO button support |
| 3 | * |
| 4 | * Copyright (C) 2008-2009 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 ltq_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 | |
| 28 | p = kmalloc(nbuttons * sizeof(*p), GFP_KERNEL); |
| 29 | if (!p) |
| 30 | return; |
| 31 | |
| 32 | memcpy(p, buttons, nbuttons * sizeof(*p)); |
| 33 | |
| 34 | pdev = platform_device_alloc("gpio-keys-polled", id); |
| 35 | if (!pdev) |
| 36 | goto err_free_buttons; |
| 37 | |
| 38 | memset(&pdata, 0, sizeof(pdata)); |
| 39 | pdata.poll_interval = poll_interval; |
| 40 | pdata.nbuttons = nbuttons; |
| 41 | pdata.buttons = p; |
| 42 | |
| 43 | err = platform_device_add_data(pdev, &pdata, sizeof(pdata)); |
| 44 | if (err) |
| 45 | goto err_put_pdev; |
| 46 | |
| 47 | err = platform_device_add(pdev); |
| 48 | if (err) |
| 49 | goto err_put_pdev; |
| 50 | |
| 51 | return; |
| 52 | |
| 53 | err_put_pdev: |
| 54 | platform_device_put(pdev); |
| 55 | |
| 56 | err_free_buttons: |
| 57 | kfree(p); |
| 58 | } |
| 59 | |
