static int quad8_function_read()

in 104-quad-8.c [210:238]

• 25 lines of code
• 5 McCabe index (conditional complexity)

static int quad8_function_read(struct counter_device *counter,
			       struct counter_count *count,
			       enum counter_function *function)
{
	struct quad8 *const priv = counter_priv(counter);
	const int id = count->id;
	unsigned long irqflags;

	spin_lock_irqsave(&priv->lock, irqflags);

	if (priv->quadrature_mode[id])
		switch (priv->quadrature_scale[id]) {
		case 0:
			*function = COUNTER_FUNCTION_QUADRATURE_X1_A;
			break;
		case 1:
			*function = COUNTER_FUNCTION_QUADRATURE_X2_A;
			break;
		case 2:
			*function = COUNTER_FUNCTION_QUADRATURE_X4;
			break;
		}
	else
		*function = COUNTER_FUNCTION_PULSE_DIRECTION;

	spin_unlock_irqrestore(&priv->lock, irqflags);

	return 0;
}