static void sdw_compute_slave_ports()

in generic_bandwidth_allocation.c [38:87]

• 37 lines of code
• 3 McCabe index (conditional complexity)

static void sdw_compute_slave_ports(struct sdw_master_runtime *m_rt,
				    struct sdw_transport_data *t_data)
{
	struct sdw_slave_runtime *s_rt = NULL;
	struct sdw_port_runtime *p_rt;
	int port_bo, sample_int;
	unsigned int rate, bps, ch = 0;
	unsigned int slave_total_ch;
	struct sdw_bus_params *b_params = &m_rt->bus->params;

	port_bo = t_data->block_offset;

	list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {
		rate = m_rt->stream->params.rate;
		bps = m_rt->stream->params.bps;
		sample_int = (m_rt->bus->params.curr_dr_freq / rate);
		slave_total_ch = 0;

		list_for_each_entry(p_rt, &s_rt->port_list, port_node) {
			ch = sdw_ch_mask_to_ch(p_rt->ch_mask);

			sdw_fill_xport_params(&p_rt->transport_params,
					      p_rt->num, false,
					      SDW_BLK_GRP_CNT_1,
					      sample_int, port_bo, port_bo >> 8,
					      t_data->hstart,
					      t_data->hstop,
					      SDW_BLK_PKG_PER_PORT, 0x0);

			sdw_fill_port_params(&p_rt->port_params,
					     p_rt->num, bps,
					     SDW_PORT_FLOW_MODE_ISOCH,
					     b_params->s_data_mode);

			port_bo += bps * ch;
			slave_total_ch += ch;
		}

		if (m_rt->direction == SDW_DATA_DIR_TX &&
		    m_rt->ch_count == slave_total_ch) {
			/*
			 * Slave devices were configured to access all channels
			 * of the stream, which indicates that they operate in
			 * 'mirror mode'. Make sure we reset the port offset for
			 * the next device in the list
			 */
			port_bo = t_data->block_offset;
		}
	}
}