Commit dd87a72a authored by Pierre-Louis Bossart's avatar Pierre-Louis Bossart Committed by Vinod Koul
Browse files

soundwire: enable Data Port test modes 



Test modes are required for all SoundWire IP, and help debug
integration issues. In theory each port can be configured with a
different mode but to simplify this patch only offers separate
configurations for the Master and Slave ports - this covers 99% of the
intended cases during platform integration.

The test mode value is set via platform-specific ways.

Signed-off-by: default avatarPierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: default avatarGuennadi Liakhovetski <guennadi.liakhovetski@linux.intel.com>
Reviewed-by: default avatarRander Wang <rander.wang@linux.intel.com>
Signed-off-by: default avatarBard Liao <yung-chuan.liao@linux.intel.com>
Link: https://lore.kernel.org/r/20200920193207.31241-2-yung-chuan.liao@linux.intel.com


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent f067c925

drivers/soundwire/bus.c

+6 −0
Original line number Diff line number Diff line
@@ -1099,6 +1099,12 @@ int sdw_configure_dpn_intr(struct sdw_slave *slave, 
	int ret;

	u8 val = 0;



	if (slave->bus->params.s_data_mode != SDW_PORT_DATA_MODE_NORMAL) {

		dev_dbg(&slave->dev, "TEST FAIL interrupt %s\n",

			enable ? "on" : "off");

		mask |= SDW_DPN_INT_TEST_FAIL;

	}



	addr = SDW_DPN_INTMASK(port);



	/* Set/Clear port ready interrupt mask */

drivers/soundwire/generic_bandwidth_allocation.c

+4 −2
Original line number Diff line number Diff line
@@ -43,6 +43,7 @@ static void sdw_compute_slave_ports(struct sdw_master_runtime *m_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;
@@ -66,7 +67,7 @@ static void sdw_compute_slave_ports(struct sdw_master_runtime *m_rt, 
			sdw_fill_port_params(&p_rt->port_params,

					     p_rt->num, bps,

					     SDW_PORT_FLOW_MODE_ISOCH,

					     SDW_PORT_DATA_MODE_NORMAL);

					     b_params->s_data_mode);



			port_bo += bps * ch;

			slave_total_ch += ch;
@@ -92,6 +93,7 @@ static void sdw_compute_master_ports(struct sdw_master_runtime *m_rt, 
	struct sdw_transport_data t_data = {0};

	struct sdw_port_runtime *p_rt;

	struct sdw_bus *bus = m_rt->bus;

	struct sdw_bus_params *b_params = &bus->params;

	int sample_int, hstart = 0;

	unsigned int rate, bps, ch, no_ch;
@@ -118,7 +120,7 @@ static void sdw_compute_master_ports(struct sdw_master_runtime *m_rt, 
		sdw_fill_port_params(&p_rt->port_params,

				     p_rt->num, bps,

				     SDW_PORT_FLOW_MODE_ISOCH,

				     SDW_PORT_DATA_MODE_NORMAL);

				     b_params->m_data_mode);



		/* Check for first entry */

		if (!(p_rt == list_first_entry(&m_rt->port_list,

drivers/soundwire/stream.c

+2 −1
Original line number Diff line number Diff line
@@ -443,7 +443,8 @@ static int sdw_prep_deprep_slave_ports(struct sdw_bus *bus, 


	prep_ch.bank = bus->params.next_bank;



	if (dpn_prop->imp_def_interrupts || !dpn_prop->simple_ch_prep_sm)

	if (dpn_prop->imp_def_interrupts || !dpn_prop->simple_ch_prep_sm ||

	    bus->params.s_data_mode != SDW_PORT_DATA_MODE_NORMAL)

		intr = true;



	/*

include/linux/soundwire/sdw.h

+6 −0
Original line number Diff line number Diff line
@@ -554,6 +554,10 @@ enum sdw_port_prep_ops { 
 * @bandwidth: Current bandwidth

 * @col: Active columns

 * @row: Active rows

 * @s_data_mode: NORMAL, STATIC or PRBS mode for all Slave ports

 * @m_data_mode: NORMAL, STATIC or PRBS mode for all Master ports. The value

 * should be the same to detect transmission issues, but can be different to

 * test the interrupt reports

 */

struct sdw_bus_params {

	enum sdw_reg_bank curr_bank;
@@ -563,6 +567,8 @@ struct sdw_bus_params { 
	unsigned int bandwidth;

	unsigned int col;

	unsigned int row;

	int s_data_mode;

	int m_data_mode;

};



/**

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