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ramips: add common gpio-buttons device

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@19404 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
juhosg
2010-01-30 15:25:20 +00:00
parent c96f03b559
commit 1284f885f3
8 changed files with 97 additions and 1 deletions
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57
target/linux/ramips/files/arch/mips/ralink/common/dev-gpio-buttons.c Normal file
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@@ -0,0 +1,57 @@
/*
* Ralink SoC GPIO button support
*
* Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
*
* 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 <linux/platform_device.h>
#include <asm/mach-ralink/dev-gpio-buttons.h>
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);
}