static int mchp_tc_count_action_write()

in microchip-tcb-capture.c [194:227]

• 29 lines of code
• 6 McCabe index (conditional complexity)

static int mchp_tc_count_action_write(struct counter_device *counter,
				      struct counter_count *count,
				      struct counter_synapse *synapse,
				      enum counter_synapse_action action)
{
	struct mchp_tc_data *const priv = counter_priv(counter);
	u32 edge = ATMEL_TC_ETRGEDG_NONE;

	/* QDEC mode is rising edge only */
	if (priv->qdec_mode)
		return -EINVAL;

	switch (action) {
	case COUNTER_SYNAPSE_ACTION_NONE:
		edge = ATMEL_TC_ETRGEDG_NONE;
		break;
	case COUNTER_SYNAPSE_ACTION_RISING_EDGE:
		edge = ATMEL_TC_ETRGEDG_RISING;
		break;
	case COUNTER_SYNAPSE_ACTION_FALLING_EDGE:
		edge = ATMEL_TC_ETRGEDG_FALLING;
		break;
	case COUNTER_SYNAPSE_ACTION_BOTH_EDGES:
		edge = ATMEL_TC_ETRGEDG_BOTH;
		break;
	default:
		/* should never reach this path */
		return -EINVAL;
	}

	return regmap_write_bits(priv->regmap,
				ATMEL_TC_REG(priv->channel[0], CMR),
				ATMEL_TC_ETRGEDG, edge);
}