Merge tag 'soundwire-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire

Pull soundwire updates from Vinod Koul:

 - Core: add concept of controller_id to deal with clear Controller /
   Manager hierarchy

 - bunch of qcom driver refactoring for qcom_swrm_stream_alloc_ports(),
   qcom_swrm_stream_alloc_ports() and setting controller id to hw master
   id

* tag 'soundwire-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire:
  soundwire: amd: drop bus freq calculation and set 'max_clk_freq'
  soundwire: generic_bandwidth_allocation use bus->params.max_dr_freq
  soundwire: qcom: set controller id to hw master id
  soundwire: fix initializing sysfs for same devices on different buses
  soundwire: bus: introduce controller_id
  soundwire: stream: constify sdw_port_config when adding devices
  soundwire: qcom: move sconfig in qcom_swrm_stream_alloc_ports() out of critical section
  soundwire: qcom: drop unneeded qcom_swrm_stream_alloc_ports() cleanup

Author: torvalds

drivers/soundwire/amd_manager.c

@@ -927,6 +927,14 @@ static int amd_sdw_manager_probe(struct platform_device *pdev)
 	amd_manager->bus.clk_stop_timeout = 200;
 	amd_manager->bus.link_id = amd_manager->instance;
 
+	/*
+	 * Due to BIOS compatibility, the two links are exposed within
+	 * the scope of a single controller. If this changes, the
+	 * controller_id will have to be updated with drv_data
+	 * information.
+	 */
+	amd_manager->bus.controller_id = 0;
+
 	switch (amd_manager->instance) {
 	case ACP_SDW0:
 		amd_manager->num_dout_ports = AMD_SDW0_MAX_TX_PORTS;
@@ -942,13 +950,13 @@ static int amd_sdw_manager_probe(struct platform_device *pdev)
 
 	amd_manager->reg_mask = &sdw_manager_reg_mask_array[amd_manager->instance];
 	params = &amd_manager->bus.params;
-	params->max_dr_freq = AMD_SDW_DEFAULT_CLK_FREQ * 2;
-	params->curr_dr_freq = AMD_SDW_DEFAULT_CLK_FREQ * 2;
+
 	params->col = AMD_SDW_DEFAULT_COLUMNS;
 	params->row = AMD_SDW_DEFAULT_ROWS;
 	prop = &amd_manager->bus.prop;
 	prop->clk_freq = &amd_sdw_freq_tbl[0];
 	prop->mclk_freq = AMD_SDW_BUS_BASE_FREQ;
+	prop->max_clk_freq = AMD_SDW_DEFAULT_CLK_FREQ;
 
 	ret = sdw_bus_master_add(&amd_manager->bus, dev, dev->fwnode);
 	if (ret) {

drivers/soundwire/bus.c

@@ -22,6 +22,10 @@ static int sdw_get_id(struct sdw_bus *bus)
 		return rc;
 
 	bus->id = rc;
+
+	if (bus->controller_id == -1)
+		bus->controller_id = rc;
+
 	return 0;
 }
 

drivers/soundwire/debugfs.c

@@ -20,7 +20,7 @@ void sdw_bus_debugfs_init(struct sdw_bus *bus)
 		return;
 
 	/* create the debugfs master-N */
-	snprintf(name, sizeof(name), "master-%d-%d", bus->id, bus->link_id);
+	snprintf(name, sizeof(name), "master-%d-%d", bus->controller_id, bus->link_id);
 	bus->debugfs = debugfs_create_dir(name, sdw_debugfs_root);
 }
 

drivers/soundwire/generic_bandwidth_allocation.c

@@ -333,7 +333,7 @@ static int sdw_select_row_col(struct sdw_bus *bus, int clk_freq)
  */
 static int sdw_compute_bus_params(struct sdw_bus *bus)
 {
-	unsigned int max_dr_freq, curr_dr_freq = 0;
+	unsigned int curr_dr_freq = 0;
 	struct sdw_master_prop *mstr_prop = &bus->prop;
 	int i, clk_values, ret;
 	bool is_gear = false;
@@ -351,14 +351,12 @@ static int sdw_compute_bus_params(struct sdw_bus *bus)
 		clk_buf = NULL;
 	}
 
-	max_dr_freq = mstr_prop->max_clk_freq * SDW_DOUBLE_RATE_FACTOR;
-
 	for (i = 0; i < clk_values; i++) {
 		if (!clk_buf)
-			curr_dr_freq = max_dr_freq;
+			curr_dr_freq = bus->params.max_dr_freq;
 		else
 			curr_dr_freq = (is_gear) ?
-				(max_dr_freq >>  clk_buf[i]) :
+				(bus->params.max_dr_freq >>  clk_buf[i]) :
 				clk_buf[i] * SDW_DOUBLE_RATE_FACTOR;
 
 		if (curr_dr_freq <= bus->params.bandwidth)

drivers/soundwire/intel_auxdevice.c

@@ -234,6 +234,9 @@ static int intel_link_probe(struct auxiliary_device *auxdev,
 	cdns->instance = sdw->instance;
 	cdns->msg_count = 0;
 
+	/* single controller for all SoundWire links */
+	bus->controller_id = 0;
+
 	bus->link_id = auxdev->id;
 	bus->clk_stop_timeout = 1;
 

drivers/soundwire/master.c

@@ -145,7 +145,7 @@ int sdw_master_device_add(struct sdw_bus *bus, struct device *parent,
 	md->dev.fwnode = fwnode;
 	md->dev.dma_mask = parent->dma_mask;
 
-	dev_set_name(&md->dev, "sdw-master-%d", bus->id);
+	dev_set_name(&md->dev, "sdw-master-%d-%d", bus->controller_id, bus->link_id);
 
 	ret = device_register(&md->dev);
 	if (ret) {

drivers/soundwire/qcom.c

@@ -1157,9 +1157,20 @@ static int qcom_swrm_stream_alloc_ports(struct qcom_swrm_ctrl *ctrl,
 	struct sdw_port_runtime *p_rt;
 	struct sdw_slave *slave;
 	unsigned long *port_mask;
-	int i, maxport, pn, nports = 0, ret = 0;
+	int maxport, pn, nports = 0, ret = 0;
 	unsigned int m_port;
 
+	if (direction == SNDRV_PCM_STREAM_CAPTURE)
+		sconfig.direction = SDW_DATA_DIR_TX;
+	else
+		sconfig.direction = SDW_DATA_DIR_RX;
+
+	/* hw parameters wil be ignored as we only support PDM */
+	sconfig.ch_count = 1;
+	sconfig.frame_rate = params_rate(params);
+	sconfig.type = stream->type;
+	sconfig.bps = 1;
+
 	mutex_lock(&ctrl->port_lock);
 	list_for_each_entry(m_rt, &stream->master_list, stream_node) {
 		if (m_rt->direction == SDW_DATA_DIR_RX) {
@@ -1183,7 +1194,7 @@ static int qcom_swrm_stream_alloc_ports(struct qcom_swrm_ctrl *ctrl,
 				if (pn > maxport) {
 					dev_err(ctrl->dev, "All ports busy\n");
 					ret = -EBUSY;
-					goto err;
+					goto out;
 				}
 				set_bit(pn, port_mask);
 				pconfig[nports].num = pn;
@@ -1193,24 +1204,9 @@ static int qcom_swrm_stream_alloc_ports(struct qcom_swrm_ctrl *ctrl,
 		}
 	}
 
-	if (direction == SNDRV_PCM_STREAM_CAPTURE)
-		sconfig.direction = SDW_DATA_DIR_TX;
-	else
-		sconfig.direction = SDW_DATA_DIR_RX;
-
-	/* hw parameters wil be ignored as we only support PDM */
-	sconfig.ch_count = 1;
-	sconfig.frame_rate = params_rate(params);
-	sconfig.type = stream->type;
-	sconfig.bps = 1;
 	sdw_stream_add_master(&ctrl->bus, &sconfig, pconfig,
 			      nports, stream);
-err:
-	if (ret) {
-		for (i = 0; i < nports; i++)
-			clear_bit(pconfig[i].num, port_mask);
-	}
-
+out:
 	mutex_unlock(&ctrl->port_lock);
 
 	return ret;
@@ -1593,6 +1589,13 @@ static int qcom_swrm_probe(struct platform_device *pdev)
 		}
 	}
 
+	ctrl->bus.controller_id = -1;
+
+	if (ctrl->version > SWRM_VERSION_1_3_0) {
+		ctrl->reg_read(ctrl, SWRM_COMP_MASTER_ID, &val);
+		ctrl->bus.controller_id = val;
+	}
+
 	ret = sdw_bus_master_add(&ctrl->bus, dev, dev->fwnode);
 	if (ret) {
 		dev_err(dev, "Failed to register Soundwire controller (%d)\n",

drivers/soundwire/slave.c

@@ -39,14 +39,14 @@ int sdw_slave_add(struct sdw_bus *bus,
 	slave->dev.fwnode = fwnode;
 
 	if (id->unique_id == SDW_IGNORED_UNIQUE_ID) {
-		/* name shall be sdw:link:mfg:part:class */
-		dev_set_name(&slave->dev, "sdw:%01x:%04x:%04x:%02x",
-			     bus->link_id, id->mfg_id, id->part_id,
+		/* name shall be sdw:ctrl:link:mfg:part:class */
+		dev_set_name(&slave->dev, "sdw:%01x:%01x:%04x:%04x:%02x",
+			     bus->controller_id, bus->link_id, id->mfg_id, id->part_id,
 			     id->class_id);
 	} else {
-		/* name shall be sdw:link:mfg:part:class:unique */
-		dev_set_name(&slave->dev, "sdw:%01x:%04x:%04x:%02x:%01x",
-			     bus->link_id, id->mfg_id, id->part_id,
+		/* name shall be sdw:ctrl:link:mfg:part:class:unique */
+		dev_set_name(&slave->dev, "sdw:%01x:%01x:%04x:%04x:%02x:%01x",
+			     bus->controller_id, bus->link_id, id->mfg_id, id->part_id,
 			     id->class_id, id->unique_id);
 	}
 

drivers/soundwire/stream.c

@@ -898,7 +898,7 @@ static struct sdw_port_runtime *sdw_port_alloc(struct list_head *port_list)
 }
 
 static int sdw_port_config(struct sdw_port_runtime *p_rt,
-			   struct sdw_port_config *port_config,
+			   const struct sdw_port_config *port_config,
 			   int port_index)
 {
 	p_rt->ch_mask = port_config[port_index].ch_mask;
@@ -971,7 +971,7 @@ static int sdw_slave_port_is_valid_range(struct device *dev, int num)
 
 static int sdw_slave_port_config(struct sdw_slave *slave,
 				 struct sdw_slave_runtime *s_rt,
-				 struct sdw_port_config *port_config)
+				 const struct sdw_port_config *port_config)
 {
 	struct sdw_port_runtime *p_rt;
 	int ret;
@@ -1027,7 +1027,7 @@ static int sdw_master_port_alloc(struct sdw_master_runtime *m_rt,
 }
 
 static int sdw_master_port_config(struct sdw_master_runtime *m_rt,
-				  struct sdw_port_config *port_config)
+				  const struct sdw_port_config *port_config)
 {
 	struct sdw_port_runtime *p_rt;
 	int ret;
@@ -1862,7 +1862,7 @@ EXPORT_SYMBOL(sdw_release_stream);
  */
 int sdw_stream_add_master(struct sdw_bus *bus,
 			  struct sdw_stream_config *stream_config,
-			  struct sdw_port_config *port_config,
+			  const struct sdw_port_config *port_config,
 			  unsigned int num_ports,
 			  struct sdw_stream_runtime *stream)
 {
@@ -1982,7 +1982,7 @@ EXPORT_SYMBOL(sdw_stream_remove_master);
  */
 int sdw_stream_add_slave(struct sdw_slave *slave,
 			 struct sdw_stream_config *stream_config,
-			 struct sdw_port_config *port_config,
+			 const struct sdw_port_config *port_config,
 			 unsigned int num_ports,
 			 struct sdw_stream_runtime *stream)
 {

include/linux/soundwire/sdw.h

@@ -886,7 +886,8 @@ struct sdw_master_ops {
  * struct sdw_bus - SoundWire bus
  * @dev: Shortcut to &bus->md->dev to avoid changing the entire code.
  * @md: Master device
- * @link_id: Link id number, can be 0 to N, unique for each Master
+ * @controller_id: system-unique controller ID. If set to -1, the bus @id will be used.
+ * @link_id: Link id number, can be 0 to N, unique for each Controller
  * @id: bus system-wide unique id
  * @slaves: list of Slaves on this bus
  * @assigned: Bitmap for Slave device numbers.
@@ -918,6 +919,7 @@ struct sdw_master_ops {
 struct sdw_bus {
 	struct device *dev;
 	struct sdw_master_device *md;
+	int controller_id;
 	unsigned int link_id;
 	int id;
 	struct list_head slaves;
@@ -1040,7 +1042,7 @@ int sdw_compute_params(struct sdw_bus *bus);
 
 int sdw_stream_add_master(struct sdw_bus *bus,
 		struct sdw_stream_config *stream_config,
-		struct sdw_port_config *port_config,
+		const struct sdw_port_config *port_config,
 		unsigned int num_ports,
 		struct sdw_stream_runtime *stream);
 int sdw_stream_remove_master(struct sdw_bus *bus,
@@ -1062,7 +1064,7 @@ void sdw_extract_slave_id(struct sdw_bus *bus, u64 addr, struct sdw_slave_id *id
 
 int sdw_stream_add_slave(struct sdw_slave *slave,
 			 struct sdw_stream_config *stream_config,
-			 struct sdw_port_config *port_config,
+			 const struct sdw_port_config *port_config,
 			 unsigned int num_ports,
 			 struct sdw_stream_runtime *stream);
 int sdw_stream_remove_slave(struct sdw_slave *slave,
@@ -1084,7 +1086,7 @@ int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val);
 
 static inline int sdw_stream_add_slave(struct sdw_slave *slave,
 				       struct sdw_stream_config *stream_config,
-				       struct sdw_port_config *port_config,
+				       const struct sdw_port_config *port_config,
 				       unsigned int num_ports,
 				       struct sdw_stream_runtime *stream)
 {