Commit 00f57195 authored by Pierre-Louis Bossart's avatar Pierre-Louis Bossart Committed by Vinod Koul
Browse files

soundwire: stream: special-case the bus compute_params() routine 



For BPT support, we want to allocate the entire audio payload and
bypass the allocation based on PCM/PDM parameters.

Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.dev>
Signed-off-by: default avatarBard Liao <yung-chuan.liao@linux.intel.com>
Reviewed-by: default avatarPéter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: default avatarLiam Girdwood <liam.r.girdwood@intel.com>
Reviewed-by: default avatarRanjani Sridharan <ranjani.sridharan@linux.intel.com>
Tested-by: default avatar <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20250227140615.8147-6-yung-chuan.liao@linux.intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent dc90bbef

drivers/soundwire/generic_bandwidth_allocation.c

+48 −0
Original line number Diff line number Diff line
@@ -86,6 +86,49 @@ void sdw_compute_slave_ports(struct sdw_master_runtime *m_rt, 
}

EXPORT_SYMBOL(sdw_compute_slave_ports);



static void sdw_compute_dp0_slave_ports(struct sdw_master_runtime *m_rt)

{

	struct sdw_bus *bus = m_rt->bus;

	struct sdw_slave_runtime *s_rt;

	struct sdw_port_runtime *p_rt;



	list_for_each_entry(s_rt, &m_rt->slave_rt_list, m_rt_node) {

		list_for_each_entry(p_rt, &s_rt->port_list, port_node) {

			sdw_fill_xport_params(&p_rt->transport_params, p_rt->num, false,

					      SDW_BLK_GRP_CNT_1, bus->params.col, 0, 0, 1,

					      bus->params.col - 1, SDW_BLK_PKG_PER_PORT, 0x0);



			sdw_fill_port_params(&p_rt->port_params, p_rt->num, bus->params.col - 1,

					     SDW_PORT_FLOW_MODE_ISOCH, SDW_PORT_DATA_MODE_NORMAL);

		}

	}

}



static void sdw_compute_dp0_master_ports(struct sdw_master_runtime *m_rt)

{

	struct sdw_port_runtime *p_rt;

	struct sdw_bus *bus = m_rt->bus;



	list_for_each_entry(p_rt, &m_rt->port_list, port_node) {

		sdw_fill_xport_params(&p_rt->transport_params, p_rt->num, false,

				      SDW_BLK_GRP_CNT_1, bus->params.col, 0, 0, 1,

				      bus->params.col - 1, SDW_BLK_PKG_PER_PORT, 0x0);



		sdw_fill_port_params(&p_rt->port_params, p_rt->num, bus->params.col - 1,

				     SDW_PORT_FLOW_MODE_ISOCH, SDW_PORT_DATA_MODE_NORMAL);

	}

}



static void sdw_compute_dp0_port_params(struct sdw_bus *bus)

{

	struct sdw_master_runtime *m_rt;



	list_for_each_entry(m_rt, &bus->m_rt_list, bus_node) {

		sdw_compute_dp0_master_ports(m_rt);

		sdw_compute_dp0_slave_ports(m_rt);

	}

}



static void sdw_compute_master_ports(struct sdw_master_runtime *m_rt,

				     struct sdw_group_params *params,

				     int *port_bo, int hstop)
@@ -618,6 +661,11 @@ int sdw_compute_params(struct sdw_bus *bus, struct sdw_stream_runtime *stream) 
	if (ret < 0)

		return ret;



	if (stream->type == SDW_STREAM_BPT) {

		sdw_compute_dp0_port_params(bus);

		return 0;

	}



	/* Compute transport and port params */

	ret = sdw_compute_port_params(bus, stream);

	if (ret < 0) {