C++ (Cpp) set_external_irq Examples

Example #1

File: sbc2410_buttons.c Project: csuman123/test

static void buttons_irq(int irq, void *dev_id, struct pt_regs *reg)
{
	struct key_info *k;
	int i;
	int found = 0;
	int up;
	int flags;
	for (i = 0; i < sizeof key_info_tab / sizeof key_info_tab[1]; i++) {
		k = key_info_tab + i;
		if (k->irq_no == irq) {
			found = 1;
			break;
		}
	}
	if (!found) {
		printk("bad irq %d in button\n", irq);
		return;
	}

	save_flags(flags);
	cli();
	set_gpio_mode_user(k->gpio_port, GPIO_MODE_IN);
	up = read_gpio_bit(k->gpio_port);
	set_external_irq(k->irq_no, EXT_BOTH_EDGES, GPIO_PULLUP_DIS);
	restore_flags(flags);
        if (up) {
               key_value = k->key_no + 0x80;
        } else {
               key_value = k->key_no;
        }
       	ready = 1;
	wake_up_interruptible(&buttons_wait);
}

Example #2

File: sbc2410_buttons.c Project: csuman123/test

static int request_irqs(void)
{
	struct key_info *k;
	int i;
	for (i = 0; i < sizeof key_info_tab / sizeof key_info_tab[1]; i++) {
		k = key_info_tab + i;
		set_external_irq(k->irq_no, EXT_BOTH_EDGES, GPIO_PULLUP_DIS);
		if (request_irq(k->irq_no, &buttons_irq, SA_INTERRUPT, DEVICE_NAME, &buttons_irq)) {
			return -1;
		}
		
	}
	return 0;
}

Example #3

File: s3c2410-kbd-zlg7290.c Project: AxelLin/Drv

static int __init s3c2410_kbd_init(void)
{
	int ret;
	int oldiiccon;
	int flags;

	ret = set_external_irq(IRQ_KBD, EXT_FALLING_EDGE, GPIO_PULLUP_EN);

	local_irq_save(flags);
	IIC_init();
	
	Set_IIC_mode(ZLG7289_IICCON, &oldiiccon);
	ret=IIC_Read(ZLG7290_ADDR, 0);

	//restore IICCON
	Set_IIC_mode(oldiiccon, NULL);
	local_irq_save(flags);

	DPRINTK("zlg7290 system register=0x%x\n", ret);

	KBD_CLOSE_INT();

	ret = register_chrdev(0, DEVICE_NAME, &s3c2410_fops);
	if (ret < 0) {
		printk(DEVICE_NAME " can't get major number\n");
		return ret;
	}
	kbdMajor = ret;

	/* Enable touch interrupt */
	ret = request_irq(IRQ_KBD, s3c2410_isr_kbd,SA_INTERRUPT,
			DEVICE_NAME, s3c2410_isr_kbd);
	if (ret) {
		return ret;
	}
	kbddev.head = kbddev.tail = 0;
	kbddev.kbdmode= KEY_NULL;
	init_waitqueue_head(&(kbddev.wq));

#ifdef CONFIG_DEVFS_FS
	devfs_kbd_dir = devfs_mk_dir(NULL, "keyboard", NULL);
	devfs_kbdraw = devfs_register(devfs_kbd_dir, "0raw", DEVFS_FL_DEFAULT,
				kbdMajor, KBDRAW_MINOR, S_IFCHR | S_IRUSR | S_IWUSR, &s3c2410_fops, NULL);
#endif
	printk (DEVICE_NAME"\tinitialized\n");

	return 0;
}