irqreturn_t factory_reset_irq(int cpl, void *dev_id, struct pt_regs *regs)
{
unsigned int delay;
if (ignore_resetbutton) {
ar7100_gpio_config_int (FACTORY_RESET_GPIO,INT_TYPE_LEVEL,
INT_POL_ACTIVE_LOW);
ignore_resetbutton = 0;
return IRQ_HANDLED;
}
ar7100_gpio_config_int (FACTORY_RESET_GPIO,INT_TYPE_LEVEL,INT_POL_ACTIVE_HIGH);
ignore_resetbutton = 1;
if (atomic_read(&ar7100_fr_status)) {
local_irq_disable();
#define UDELAY_COUNT 4000
for (delay = UDELAY_COUNT; delay; delay--) {
if (ar7100_gpio_in_val(FACTORY_RESET_GPIO)) {
break;
}
udelay(1000);
}
/*
* since we are going to reboot the board, we
* don't need the interrupt handler anymore,
* so disable it.
*/
disable_irq(AR7100_GPIO_IRQn(FACTORY_RESET_GPIO));
if (!delay) {
wake_up(&ar7100_fr_wq);
printk("\nar7100: factory configuration restored..\n");
}
else {
ar7100_restart(NULL);
}
local_irq_enable();
}
return IRQ_HANDLED;
}
static int push_button_read(char *page, char **start, off_t off, int count, int *eof, void *data)
{
ar7100_gpio_config_input(JUMPSTART_GPIO);
return sprintf(page, "%d\n", ar7100_gpio_in_val(JUMPSTART_GPIO));
}
