static bool wait_for_reg(void __iomem *reg, u32 mask, unsigned long timeout)
{
timeout += jiffies;
while (time_is_after_eq_jiffies(timeout)) {
if ((readl(reg) & mask) == mask)
return true;
msleep(1);
}
return false;
}
/**
* ir_timer_keyup() - generates a keyup event after a timeout
* @cookie: a pointer to struct ir_input_dev passed to setup_timer()
*
* This routine will generate a keyup event some time after a keydown event
* is generated when no further activity has been detected.
*/
static void ir_timer_keyup(unsigned long cookie)
{
struct ir_input_dev *ir = (struct ir_input_dev *)cookie;
unsigned long flags;
/*
* ir->keyup_jiffies is used to prevent a race condition if a
* hardware interrupt occurs at this point and the keyup timer
* event is moved further into the future as a result.
*
* The timer will then be reactivated and this function called
* again in the future. We need to exit gracefully in that case
* to allow the input subsystem to do its auto-repeat magic or
* a keyup event might follow immediately after the keydown.
*/
spin_lock_irqsave(&ir->keylock, flags);
if (time_is_after_eq_jiffies(ir->keyup_jiffies))
ir_keyup(ir);
spin_unlock_irqrestore(&ir->keylock, flags);
}
