1 /* linux/arch/arm/mach-s5pv310/button-smdkv310.c
3 * Copyright (c) 2010 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com/
6 * S5PV310 - Button Driver
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #include <linux/init.h>
14 #include <linux/interrupt.h>
15 #include <linux/irq.h>
16 #include <linux/ioport.h>
17 #include <linux/delay.h>
18 #include <linux/serial_core.h>
20 #include <linux/platform_device.h>
22 #include <plat/map-base.h>
23 #include <plat/gpio-cfg.h>
25 #include <mach/regs-gpio.h>
26 #include <mach/regs-irq.h>
27 #include <linux/gpio.h>
30 s3c_button_interrupt(int irq, void *dev_id)
32 if (irq == IRQ_EINT(0))
33 printk(KERN_INFO "XEINT 0 Button Interrupt occure\n");
34 else if (irq == IRQ_EINT(31))
35 printk(KERN_INFO "XEINT 31 Button Interrupt occure\n");
37 printk(KERN_INFO "%d Button Interrupt occure\n", irq);
42 static struct irqaction s3c_button_irq = {
43 .name = "s3c button Tick",
44 .flags = IRQF_SHARED ,
45 .handler = s3c_button_interrupt,
48 static unsigned int s3c_button_gpio_init(void)
52 err = gpio_request(S5PV310_GPX3(7), "GPH3");
54 printk(KERN_INFO "gpio request error : %d\n", err);
56 s3c_gpio_cfgpin(S5PV310_GPX3(7), (0xf << 28));
57 s3c_gpio_setpull(S5PV310_GPX3(7), S3C_GPIO_PULL_NONE);
63 static int __init s3c_button_init(void)
65 printk(KERN_INFO"SMDKV310 Button init function\n");
67 if (s3c_button_gpio_init()) {
68 printk(KERN_ERR "%s failed\n", __func__);
72 set_irq_type(gpio_to_irq(S5PV310_GPX3(7)), IRQ_TYPE_EDGE_FALLING);
74 setup_irq(gpio_to_irq(S5PV310_GPX3(7)), &s3c_button_irq);
77 set_irq_wake(gpio_to_irq(S5PV310_GPX3(7)), 1);
82 late_initcall(s3c_button_init);