From 9327f02b7b5bfcdd5ace7b2352ea4ead956bcb02 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Sat, 30 Jan 2010 15:25:20 +0000 Subject: ramips: add common gpio-buttons device SVN-Revision: 19404 --- .../arch/mips/ralink/common/dev-gpio-buttons.c | 57 ++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-buttons.c (limited to 'target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-buttons.c') diff --git a/target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-buttons.c b/target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-buttons.c new file mode 100644 index 0000000..f323001 --- /dev/null +++ b/target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-buttons.c @@ -0,0 +1,57 @@ +/* + * Ralink SoC GPIO button support + * + * Copyright (C) 2010 Gabor Juhos + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published + * by the Free Software Foundation. + */ + +#include "linux/init.h" +#include + +#include + +void __init ramips_register_gpio_buttons(int id, + unsigned poll_interval, + unsigned nbuttons, + struct gpio_button *buttons) +{ + struct platform_device *pdev; + struct gpio_buttons_platform_data pdata; + struct gpio_button *p; + int err; + + p = kmalloc(nbuttons * sizeof(*p), GFP_KERNEL); + if (!p) + return; + + memcpy(p, buttons, nbuttons * sizeof(*p)); + + pdev = platform_device_alloc("gpio-buttons", id); + if (!pdev) + goto err_free_buttons; + + memset(&pdata, 0, sizeof(pdata)); + pdata.poll_interval = poll_interval; + pdata.nbuttons = nbuttons; + pdata.buttons = p; + + err = platform_device_add_data(pdev, &pdata, sizeof(pdata)); + if (err) + goto err_put_pdev; + + + err = platform_device_add(pdev); + if (err) + goto err_put_pdev; + + return; + +err_put_pdev: + platform_device_put(pdev); + +err_free_buttons: + kfree(p); +} -- cgit v1.1