115 	 * Create Slave devices based on Slaves described in  in sdw_bus_master_add()
151 	struct sdw_slave *slave = dev_to_sdw_dev(dev);  in sdw_delete_slave()  local
152 	struct sdw_bus *bus = slave->bus;  in sdw_delete_slave()
156 	sdw_slave_debugfs_exit(slave);  in sdw_delete_slave()
160 	if (slave->dev_num) { /* clear dev_num if assigned */  in sdw_delete_slave()
161 		clear_bit(slave->dev_num, bus->assigned);  in sdw_delete_slave()
163 			ida_free(&sdw_peripheral_ida, slave->dev_num);  in sdw_delete_slave()
165 	list_del_init(&slave->node);  in sdw_delete_slave()
273 		dev_err(bus->dev, "trf on Slave %d failed:%d %s addr %x count %d\n",  in sdw_transfer_unlocked()
285  * sdw_transfer() - Synchronous transfer message to a SDW Slave device
335  * sdw_transfer_defer() - Asynchronously transfer message to a SDW Slave device
352 		dev_err(bus->dev, "Defer trf on Slave %d failed:%d\n",  in sdw_transfer_defer()
361 int sdw_fill_msg(struct sdw_msg *msg, struct sdw_slave *slave,  in sdw_fill_msg()  argument
380 		if (slave && !slave->prop.paging_support)  in sdw_fill_msg()
391 	if (!slave) {  in sdw_fill_msg()
392 		pr_err("SDW: No slave for paging addr\n");  in sdw_fill_msg()
396 	if (!slave->prop.paging_support) {  in sdw_fill_msg()
397 		dev_err(&slave->dev,  in sdw_fill_msg()
418 sdw_nread_no_pm(struct sdw_slave *slave, u32 addr, size_t count, u8 *val)  in sdw_nread_no_pm()  argument
423 	ret = sdw_fill_msg(&msg, slave, addr, count,  in sdw_nread_no_pm()
424 			   slave->dev_num, SDW_MSG_FLAG_READ, val);  in sdw_nread_no_pm()
428 	ret = sdw_transfer(slave->bus, &msg);  in sdw_nread_no_pm()
429 	if (slave->is_mockup_device)  in sdw_nread_no_pm()
435 sdw_nwrite_no_pm(struct sdw_slave *slave, u32 addr, size_t count, const u8 *val)  in sdw_nwrite_no_pm()  argument
440 	ret = sdw_fill_msg(&msg, slave, addr, count,  in sdw_nwrite_no_pm()
441 			   slave->dev_num, SDW_MSG_FLAG_WRITE, (u8 *)val);  in sdw_nwrite_no_pm()
445 	ret = sdw_transfer(slave->bus, &msg);  in sdw_nwrite_no_pm()
446 	if (slave->is_mockup_device)  in sdw_nwrite_no_pm()
451 int sdw_write_no_pm(struct sdw_slave *slave, u32 addr, u8 value)  in sdw_write_no_pm()  argument
453 	return sdw_nwrite_no_pm(slave, addr, 1, &value);  in sdw_write_no_pm()
523 int sdw_read_no_pm(struct sdw_slave *slave, u32 addr)  in sdw_read_no_pm()  argument
528 	ret = sdw_nread_no_pm(slave, addr, 1, &buf);  in sdw_read_no_pm()
536 int sdw_update_no_pm(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)  in sdw_update_no_pm()  argument
540 	tmp = sdw_read_no_pm(slave, addr);  in sdw_update_no_pm()
545 	return sdw_write_no_pm(slave, addr, tmp);  in sdw_update_no_pm()
549 /* Read-Modify-Write Slave register */
550 int sdw_update(struct sdw_slave *slave, u32 addr, u8 mask, u8 val)  in sdw_update()  argument
554 	tmp = sdw_read(slave, addr);  in sdw_update()
559 	return sdw_write(slave, addr, tmp);  in sdw_update()
564  * sdw_nread() - Read "n" contiguous SDW Slave registers
565  * @slave: SDW Slave
570 int sdw_nread(struct sdw_slave *slave, u32 addr, size_t count, u8 *val)  in sdw_nread()  argument
574 	ret = pm_runtime_resume_and_get(&slave->dev);  in sdw_nread()
578 	ret = sdw_nread_no_pm(slave, addr, count, val);  in sdw_nread()
580 	pm_runtime_mark_last_busy(&slave->dev);  in sdw_nread()
581 	pm_runtime_put(&slave->dev);  in sdw_nread()
588  * sdw_nwrite() - Write "n" contiguous SDW Slave registers
589  * @slave: SDW Slave
594 int sdw_nwrite(struct sdw_slave *slave, u32 addr, size_t count, const u8 *val)  in sdw_nwrite()  argument
598 	ret = pm_runtime_resume_and_get(&slave->dev);  in sdw_nwrite()
602 	ret = sdw_nwrite_no_pm(slave, addr, count, val);  in sdw_nwrite()
604 	pm_runtime_mark_last_busy(&slave->dev);  in sdw_nwrite()
605 	pm_runtime_put(&slave->dev);  in sdw_nwrite()
612  * sdw_read() - Read a SDW Slave register
613  * @slave: SDW Slave
616 int sdw_read(struct sdw_slave *slave, u32 addr)  in sdw_read()  argument
621 	ret = sdw_nread(slave, addr, 1, &buf);  in sdw_read()
630  * sdw_write() - Write a SDW Slave register
631  * @slave: SDW Slave
635 int sdw_write(struct sdw_slave *slave, u32 addr, u8 value)  in sdw_write()  argument
637 	return sdw_nwrite(slave, addr, 1, &value);  in sdw_write()
648 	struct sdw_slave *slave;  in sdw_get_slave()  local
650 	list_for_each_entry(slave, &bus->slaves, node) {  in sdw_get_slave()
651 		if (slave->dev_num == i)  in sdw_get_slave()
652 			return slave;  in sdw_get_slave()
658 int sdw_compare_devid(struct sdw_slave *slave, struct sdw_slave_id id)  in sdw_compare_devid()  argument
660 	if (slave->id.mfg_id != id.mfg_id ||  in sdw_compare_devid()
661 	    slave->id.part_id != id.part_id ||  in sdw_compare_devid()
662 	    slave->id.class_id != id.class_id ||  in sdw_compare_devid()
663 	    (slave->id.unique_id != SDW_IGNORED_UNIQUE_ID &&  in sdw_compare_devid()
664 	     slave->id.unique_id != id.unique_id))  in sdw_compare_devid()
672 static int sdw_get_device_num(struct sdw_slave *slave)  in sdw_get_device_num()  argument
676 	if (slave->bus->dev_num_ida_min) {  in sdw_get_device_num()
678 				      slave->bus->dev_num_ida_min, SDW_MAX_DEVICES,  in sdw_get_device_num()
683 		bit = find_first_zero_bit(slave->bus->assigned, SDW_MAX_DEVICES);  in sdw_get_device_num()
691 	 * Do not update dev_num in Slave data structure here,  in sdw_get_device_num()
694 	set_bit(bit, slave->bus->assigned);  in sdw_get_device_num()
700 static int sdw_assign_device_num(struct sdw_slave *slave)  in sdw_assign_device_num()  argument
702 	struct sdw_bus *bus = slave->bus;  in sdw_assign_device_num()
707 	if (!slave->dev_num) {  in sdw_assign_device_num()
708 		if (!slave->dev_num_sticky) {  in sdw_assign_device_num()
709 			mutex_lock(&slave->bus->bus_lock);  in sdw_assign_device_num()
710 			dev_num = sdw_get_device_num(slave);  in sdw_assign_device_num()
711 			mutex_unlock(&slave->bus->bus_lock);  in sdw_assign_device_num()
717 			slave->dev_num = dev_num;  in sdw_assign_device_num()
718 			slave->dev_num_sticky = dev_num;  in sdw_assign_device_num()
721 			slave->dev_num = slave->dev_num_sticky;  in sdw_assign_device_num()
727 			"Slave already registered, reusing dev_num:%d\n",  in sdw_assign_device_num()
728 			slave->dev_num);  in sdw_assign_device_num()
730 	/* Clear the slave->dev_num to transfer message on device 0 */  in sdw_assign_device_num()
731 	dev_num = slave->dev_num;  in sdw_assign_device_num()
732 	slave->dev_num = 0;  in sdw_assign_device_num()
734 	ret = sdw_write_no_pm(slave, SDW_SCP_DEVNUMBER, dev_num);  in sdw_assign_device_num()
742 	slave->dev_num = slave->dev_num_sticky;  in sdw_assign_device_num()
750 	dev_dbg(bus->dev, "SDW Slave Addr: %llx\n", addr);  in sdw_extract_slave_id()
759 		"SDW Slave class_id 0x%02x, mfg_id 0x%04x, part_id 0x%04x, unique_id 0x%x, version 0x%x\n",  in sdw_extract_slave_id()
767 	struct sdw_slave *slave, *_s;  in sdw_program_device_num()  local
776 	/* No Slave, so use raw xfer api */  in sdw_program_device_num()
806 		list_for_each_entry_safe(slave, _s, &bus->slaves, node) {  in sdw_program_device_num()
807 			if (sdw_compare_devid(slave, id) == 0) {  in sdw_program_device_num()
817 				if (slave->status != SDW_SLAVE_UNATTACHED)  in sdw_program_device_num()
821 				 * Assign a new dev_num to this Slave and  in sdw_program_device_num()
826 				ret = sdw_assign_device_num(slave);  in sdw_program_device_num()
844 			 * add Slave device even if there is no platform  in sdw_program_device_num()
851 			dev_err(bus->dev, "Slave Entry not found\n");  in sdw_program_device_num()
867 static void sdw_modify_slave_status(struct sdw_slave *slave,  in sdw_modify_slave_status()  argument
870 	struct sdw_bus *bus = slave->bus;  in sdw_modify_slave_status()
875 		 "changing status slave %d status %d new status %d\n",  in sdw_modify_slave_status()
876 		 slave->dev_num, slave->status, status);  in sdw_modify_slave_status()
879 		dev_dbg(&slave->dev,  in sdw_modify_slave_status()
880 			"initializing enumeration and init completion for Slave %d\n",  in sdw_modify_slave_status()
881 			slave->dev_num);  in sdw_modify_slave_status()
883 		init_completion(&slave->enumeration_complete);  in sdw_modify_slave_status()
884 		init_completion(&slave->initialization_complete);  in sdw_modify_slave_status()
887 		   (slave->status == SDW_SLAVE_UNATTACHED)) {  in sdw_modify_slave_status()
888 		dev_dbg(&slave->dev,  in sdw_modify_slave_status()
889 			"signaling enumeration completion for Slave %d\n",  in sdw_modify_slave_status()
890 			slave->dev_num);  in sdw_modify_slave_status()
892 		complete(&slave->enumeration_complete);  in sdw_modify_slave_status()
894 	slave->status = status;  in sdw_modify_slave_status()
898 static int sdw_slave_clk_stop_callback(struct sdw_slave *slave,  in sdw_slave_clk_stop_callback()  argument
904 	mutex_lock(&slave->sdw_dev_lock);  in sdw_slave_clk_stop_callback()
906 	if (slave->probed)  {  in sdw_slave_clk_stop_callback()
907 		struct device *dev = &slave->dev;  in sdw_slave_clk_stop_callback()
911 			ret = drv->ops->clk_stop(slave, mode, type);  in sdw_slave_clk_stop_callback()
914 	mutex_unlock(&slave->sdw_dev_lock);  in sdw_slave_clk_stop_callback()
919 static int sdw_slave_clk_stop_prepare(struct sdw_slave *slave,  in sdw_slave_clk_stop_prepare()  argument
927 	wake_en = slave->prop.wake_capable;  in sdw_slave_clk_stop_prepare()
938 		ret = sdw_read_no_pm(slave, SDW_SCP_SYSTEMCTRL);  in sdw_slave_clk_stop_prepare()
941 				dev_err(&slave->dev, "SDW_SCP_SYSTEMCTRL read failed:%d\n", ret);  in sdw_slave_clk_stop_prepare()
948 	ret = sdw_write_no_pm(slave, SDW_SCP_SYSTEMCTRL, val);  in sdw_slave_clk_stop_prepare()
951 		dev_err(&slave->dev, "SDW_SCP_SYSTEMCTRL write failed:%d\n", ret);  in sdw_slave_clk_stop_prepare()
970 			dev_dbg(bus->dev, "clock stop prep/de-prep done slave:%d\n",  in sdw_bus_wait_for_clk_prep_deprep()
979 	dev_err(bus->dev, "clock stop prep/de-prep failed slave:%d\n",  in sdw_bus_wait_for_clk_prep_deprep()
986  * sdw_bus_prep_clk_stop: prepare Slave(s) for clock stop
990  * Query Slave for clock stop mode and prepare for that mode.
995 	struct sdw_slave *slave;  in sdw_bus_prep_clk_stop()  local
1001 	 * each Slave and then wait for all Slave(s) to be  in sdw_bus_prep_clk_stop()
1003 	 * If one of the Slave devices has lost sync and  in sdw_bus_prep_clk_stop()
1007 	list_for_each_entry(slave, &bus->slaves, node) {  in sdw_bus_prep_clk_stop()
1008 		if (!slave->dev_num)  in sdw_bus_prep_clk_stop()
1011 		if (slave->status != SDW_SLAVE_ATTACHED &&  in sdw_bus_prep_clk_stop()
1012 		    slave->status != SDW_SLAVE_ALERT)  in sdw_bus_prep_clk_stop()
1015 		/* Identify if Slave(s) are available on Bus */  in sdw_bus_prep_clk_stop()
1018 		ret = sdw_slave_clk_stop_callback(slave,  in sdw_bus_prep_clk_stop()
1022 			dev_err(&slave->dev, "clock stop pre-prepare cb failed:%d\n", ret);  in sdw_bus_prep_clk_stop()
1026 		/* Only prepare a Slave device if needed */  in sdw_bus_prep_clk_stop()
1027 		if (!slave->prop.simple_clk_stop_capable) {  in sdw_bus_prep_clk_stop()
1030 			ret = sdw_slave_clk_stop_prepare(slave,  in sdw_bus_prep_clk_stop()
1034 				dev_err(&slave->dev, "clock stop prepare failed:%d\n", ret);  in sdw_bus_prep_clk_stop()
1040 	/* Skip remaining clock stop preparation if no Slave is attached */  in sdw_bus_prep_clk_stop()
1052 		 * if there are no Slave devices present and the reply is  in sdw_bus_prep_clk_stop()
1062 	list_for_each_entry(slave, &bus->slaves, node) {  in sdw_bus_prep_clk_stop()
1063 		if (!slave->dev_num)  in sdw_bus_prep_clk_stop()
1066 		if (slave->status != SDW_SLAVE_ATTACHED &&  in sdw_bus_prep_clk_stop()
1067 		    slave->status != SDW_SLAVE_ALERT)  in sdw_bus_prep_clk_stop()
1070 		ret = sdw_slave_clk_stop_callback(slave,  in sdw_bus_prep_clk_stop()
1075 			dev_err(&slave->dev, "clock stop post-prepare cb failed:%d\n", ret);  in sdw_bus_prep_clk_stop()
1124 	struct sdw_slave *slave;  in sdw_bus_exit_clk_stop()  local
1130 	 * each Slave and then wait for all Slave(s) to be  in sdw_bus_exit_clk_stop()
1133 	list_for_each_entry(slave, &bus->slaves, node) {  in sdw_bus_exit_clk_stop()
1134 		if (!slave->dev_num)  in sdw_bus_exit_clk_stop()
1137 		if (slave->status != SDW_SLAVE_ATTACHED &&  in sdw_bus_exit_clk_stop()
1138 		    slave->status != SDW_SLAVE_ALERT)  in sdw_bus_exit_clk_stop()
1141 		/* Identify if Slave(s) are available on Bus */  in sdw_bus_exit_clk_stop()
1144 		ret = sdw_slave_clk_stop_callback(slave, SDW_CLK_STOP_MODE0,  in sdw_bus_exit_clk_stop()
1147 			dev_warn(&slave->dev, "clock stop pre-deprepare cb failed:%d\n", ret);  in sdw_bus_exit_clk_stop()
1149 		/* Only de-prepare a Slave device if needed */  in sdw_bus_exit_clk_stop()
1150 		if (!slave->prop.simple_clk_stop_capable) {  in sdw_bus_exit_clk_stop()
1153 			ret = sdw_slave_clk_stop_prepare(slave, SDW_CLK_STOP_MODE0,  in sdw_bus_exit_clk_stop()
1157 				dev_warn(&slave->dev, "clock stop deprepare failed:%d\n", ret);  in sdw_bus_exit_clk_stop()
1161 	/* Skip remaining clock stop de-preparation if no Slave is attached */  in sdw_bus_exit_clk_stop()
1175 	list_for_each_entry(slave, &bus->slaves, node) {  in sdw_bus_exit_clk_stop()
1176 		if (!slave->dev_num)  in sdw_bus_exit_clk_stop()
1179 		if (slave->status != SDW_SLAVE_ATTACHED &&  in sdw_bus_exit_clk_stop()
1180 		    slave->status != SDW_SLAVE_ALERT)  in sdw_bus_exit_clk_stop()
1183 		ret = sdw_slave_clk_stop_callback(slave, SDW_CLK_STOP_MODE0,  in sdw_bus_exit_clk_stop()
1186 			dev_warn(&slave->dev, "clock stop post-deprepare cb failed:%d\n", ret);  in sdw_bus_exit_clk_stop()
1193 int sdw_configure_dpn_intr(struct sdw_slave *slave,  in sdw_configure_dpn_intr()  argument
1200 	if (slave->bus->params.s_data_mode != SDW_PORT_DATA_MODE_NORMAL) {  in sdw_configure_dpn_intr()
1201 		dev_dbg(&slave->dev, "TEST FAIL interrupt %s\n",  in sdw_configure_dpn_intr()
1217 	ret = sdw_update(slave, addr, (mask | SDW_DPN_INT_PORT_READY), val);  in sdw_configure_dpn_intr()
1219 		dev_err(&slave->dev,  in sdw_configure_dpn_intr()
1225 static int sdw_slave_set_frequency(struct sdw_slave *slave)  in sdw_slave_set_frequency()  argument
1227 	u32 mclk_freq = slave->bus->prop.mclk_freq;  in sdw_slave_set_frequency()
1228 	u32 curr_freq = slave->bus->params.curr_dr_freq >> 1;  in sdw_slave_set_frequency()
1239 	if (!slave->id.class_id)  in sdw_slave_set_frequency()
1243 		dev_err(&slave->dev,  in sdw_slave_set_frequency()
1273 		dev_err(&slave->dev,  in sdw_slave_set_frequency()
1280 		dev_err(&slave->dev,  in sdw_slave_set_frequency()
1295 		dev_err(&slave->dev,  in sdw_slave_set_frequency()
1302 	ret = sdw_write_no_pm(slave, SDW_SCP_BUS_CLOCK_BASE, base);  in sdw_slave_set_frequency()
1304 		dev_err(&slave->dev,  in sdw_slave_set_frequency()
1310 	ret = sdw_write_no_pm(slave, SDW_SCP_BUSCLOCK_SCALE_B0, scale_index);  in sdw_slave_set_frequency()
1312 		dev_err(&slave->dev,  in sdw_slave_set_frequency()
1316 	ret = sdw_write_no_pm(slave, SDW_SCP_BUSCLOCK_SCALE_B1, scale_index);  in sdw_slave_set_frequency()
1318 		dev_err(&slave->dev,  in sdw_slave_set_frequency()
1321 	dev_dbg(&slave->dev,  in sdw_slave_set_frequency()
1328 static int sdw_initialize_slave(struct sdw_slave *slave)  in sdw_initialize_slave()  argument
1330 	struct sdw_slave_prop *prop = &slave->prop;  in sdw_initialize_slave()
1335 	ret = sdw_slave_set_frequency(slave);  in sdw_initialize_slave()
1339 	if (slave->bus->prop.quirks & SDW_MASTER_QUIRKS_CLEAR_INITIAL_CLASH) {  in sdw_initialize_slave()
1341 		status = sdw_read_no_pm(slave, SDW_SCP_INT1);  in sdw_initialize_slave()
1343 			dev_err(&slave->dev,  in sdw_initialize_slave()
1348 			dev_warn(&slave->dev, "Bus clash detected before INT mask is enabled\n");  in sdw_initialize_slave()
1349 			ret = sdw_write_no_pm(slave, SDW_SCP_INT1, SDW_SCP_INT1_BUS_CLASH);  in sdw_initialize_slave()
1351 				dev_err(&slave->dev,  in sdw_initialize_slave()
1357 	if ((slave->bus->prop.quirks & SDW_MASTER_QUIRKS_CLEAR_INITIAL_PARITY) &&  in sdw_initialize_slave()
1358 	    !(slave->prop.quirks & SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY)) {  in sdw_initialize_slave()
1360 		status = sdw_read_no_pm(slave, SDW_SCP_INT1);  in sdw_initialize_slave()
1362 			dev_err(&slave->dev,  in sdw_initialize_slave()
1367 			dev_warn(&slave->dev, "PARITY error detected before INT mask is enabled\n");  in sdw_initialize_slave()
1368 			ret = sdw_write_no_pm(slave, SDW_SCP_INT1, SDW_SCP_INT1_PARITY);  in sdw_initialize_slave()
1370 				dev_err(&slave->dev,  in sdw_initialize_slave()
1384 	val = slave->prop.scp_int1_mask;  in sdw_initialize_slave()
1387 	ret = sdw_update_no_pm(slave, SDW_SCP_INTMASK1, val, val);  in sdw_initialize_slave()
1389 		dev_err(&slave->dev,  in sdw_initialize_slave()
1395 	if (!slave->prop.dp0_prop)  in sdw_initialize_slave()
1402 	ret = sdw_update_no_pm(slave, SDW_DP0_INTMASK, val, val);  in sdw_initialize_slave()
1404 		dev_err(&slave->dev,  in sdw_initialize_slave()
1409 static int sdw_handle_dp0_interrupt(struct sdw_slave *slave, u8 *slave_status)  in sdw_handle_dp0_interrupt()  argument
1414 	status = sdw_read_no_pm(slave, SDW_DP0_INT);  in sdw_handle_dp0_interrupt()
1416 		dev_err(&slave->dev,  in sdw_handle_dp0_interrupt()
1425 			dev_err(&slave->dev, "Test fail for port 0\n");  in sdw_handle_dp0_interrupt()
1435 			complete(&slave->port_ready[0]);  in sdw_handle_dp0_interrupt()
1440 			dev_err(&slave->dev, "BRA failed\n");  in sdw_handle_dp0_interrupt()
1453 		ret = sdw_write_no_pm(slave, SDW_DP0_INT, clear);  in sdw_handle_dp0_interrupt()
1455 			dev_err(&slave->dev,  in sdw_handle_dp0_interrupt()
1461 		status2 = sdw_read_no_pm(slave, SDW_DP0_INT);  in sdw_handle_dp0_interrupt()
1463 			dev_err(&slave->dev,  in sdw_handle_dp0_interrupt()
1476 		dev_warn(&slave->dev, "Reached MAX_RETRY on DP0 read\n");  in sdw_handle_dp0_interrupt()
1481 static int sdw_handle_port_interrupt(struct sdw_slave *slave,  in sdw_handle_port_interrupt()  argument
1489 		return sdw_handle_dp0_interrupt(slave, slave_status);  in sdw_handle_port_interrupt()
1492 	status = sdw_read_no_pm(slave, addr);  in sdw_handle_port_interrupt()
1494 		dev_err(&slave->dev,  in sdw_handle_port_interrupt()
1504 			dev_err(&slave->dev, "Test fail for port:%d\n", port);  in sdw_handle_port_interrupt()
1513 			complete(&slave->port_ready[port]);  in sdw_handle_port_interrupt()
1526 		ret = sdw_write_no_pm(slave, addr, clear);  in sdw_handle_port_interrupt()
1528 			dev_err(&slave->dev,  in sdw_handle_port_interrupt()
1534 		status2 = sdw_read_no_pm(slave, addr);  in sdw_handle_port_interrupt()
1536 			dev_err(&slave->dev,  in sdw_handle_port_interrupt()
1549 		dev_warn(&slave->dev, "Reached MAX_RETRY on port read");  in sdw_handle_port_interrupt()
1554 static int sdw_handle_slave_alerts(struct sdw_slave *slave)  in sdw_handle_slave_alerts()  argument
1566 	sdw_modify_slave_status(slave, SDW_SLAVE_ALERT);  in sdw_handle_slave_alerts()
1568 	ret = pm_runtime_resume_and_get(&slave->dev);  in sdw_handle_slave_alerts()
1570 		dev_err(&slave->dev, "Failed to resume device: %d\n", ret);  in sdw_handle_slave_alerts()
1575 	ret = sdw_read_no_pm(slave, SDW_SCP_INT1);  in sdw_handle_slave_alerts()
1577 		dev_err(&slave->dev,  in sdw_handle_slave_alerts()
1583 	ret = sdw_nread_no_pm(slave, SDW_SCP_INTSTAT2, 2, buf2);  in sdw_handle_slave_alerts()
1585 		dev_err(&slave->dev,  in sdw_handle_slave_alerts()
1590 	if (slave->prop.is_sdca) {  in sdw_handle_slave_alerts()
1591 		ret = sdw_read_no_pm(slave, SDW_DP0_INT);  in sdw_handle_slave_alerts()
1593 			dev_err(&slave->dev,  in sdw_handle_slave_alerts()
1604 		 * Check parity, bus clash and Slave (impl defined)  in sdw_handle_slave_alerts()
1608 			parity_check = slave->prop.scp_int1_mask & SDW_SCP_INT1_PARITY;  in sdw_handle_slave_alerts()
1609 			parity_quirk = !slave->first_interrupt_done &&  in sdw_handle_slave_alerts()
1610 				(slave->prop.quirks & SDW_SLAVE_QUIRKS_INVALID_INITIAL_PARITY);  in sdw_handle_slave_alerts()
1613 				dev_err(&slave->dev, "Parity error detected\n");  in sdw_handle_slave_alerts()
1618 			if (slave->prop.scp_int1_mask & SDW_SCP_INT1_BUS_CLASH)  in sdw_handle_slave_alerts()
1619 				dev_err(&slave->dev, "Bus clash detected\n");  in sdw_handle_slave_alerts()
1631 			if (slave->prop.scp_int1_mask & SDW_SCP_INT1_IMPL_DEF) {  in sdw_handle_slave_alerts()
1632 				dev_dbg(&slave->dev, "Slave impl defined interrupt\n");  in sdw_handle_slave_alerts()
1648 			sdw_handle_port_interrupt(slave, bit,  in sdw_handle_slave_alerts()
1658 				sdw_handle_port_interrupt(slave,  in sdw_handle_slave_alerts()
1670 				sdw_handle_port_interrupt(slave,  in sdw_handle_slave_alerts()
1676 		/* Update the Slave driver */  in sdw_handle_slave_alerts()
1678 			mutex_lock(&slave->sdw_dev_lock);  in sdw_handle_slave_alerts()
1680 			if (slave->probed) {  in sdw_handle_slave_alerts()
1681 				struct device *dev = &slave->dev;  in sdw_handle_slave_alerts()
1690 					drv->ops->interrupt_callback(slave, &slave_intr);  in sdw_handle_slave_alerts()
1694 			mutex_unlock(&slave->sdw_dev_lock);  in sdw_handle_slave_alerts()
1698 		ret = sdw_write_no_pm(slave, SDW_SCP_INT1, clear);  in sdw_handle_slave_alerts()
1700 			dev_err(&slave->dev,  in sdw_handle_slave_alerts()
1706 		slave->first_interrupt_done = true;  in sdw_handle_slave_alerts()
1712 		ret = sdw_read_no_pm(slave, SDW_SCP_INT1);  in sdw_handle_slave_alerts()
1714 			dev_err(&slave->dev,  in sdw_handle_slave_alerts()
1720 		ret = sdw_nread_no_pm(slave, SDW_SCP_INTSTAT2, 2, _buf2);  in sdw_handle_slave_alerts()
1722 			dev_err(&slave->dev,  in sdw_handle_slave_alerts()
1727 		if (slave->prop.is_sdca) {  in sdw_handle_slave_alerts()
1728 			ret = sdw_read_no_pm(slave, SDW_DP0_INT);  in sdw_handle_slave_alerts()
1730 				dev_err(&slave->dev,  in sdw_handle_slave_alerts()
1747 		 * Exit loop if Slave is continuously in ALERT state even  in sdw_handle_slave_alerts()
1756 		dev_warn(&slave->dev, "Reached MAX_RETRY on alert read\n");  in sdw_handle_slave_alerts()
1759 	pm_runtime_mark_last_busy(&slave->dev);  in sdw_handle_slave_alerts()
1760 	pm_runtime_put_autosuspend(&slave->dev);  in sdw_handle_slave_alerts()
1765 static int sdw_update_slave_status(struct sdw_slave *slave,  in sdw_update_slave_status()  argument
1770 	mutex_lock(&slave->sdw_dev_lock);  in sdw_update_slave_status()
1772 	if (slave->probed) {  in sdw_update_slave_status()
1773 		struct device *dev = &slave->dev;  in sdw_update_slave_status()
1777 			ret = drv->ops->update_status(slave, status);  in sdw_update_slave_status()
1780 	mutex_unlock(&slave->sdw_dev_lock);  in sdw_update_slave_status()
1786  * sdw_handle_slave_status() - Handle Slave status
1788  * @status: Status for all Slave(s)
1794 	struct sdw_slave *slave;  in sdw_handle_slave_status()  local
1807 		slave = sdw_get_slave(bus, i);  in sdw_handle_slave_status()
1808 		if (!slave)  in sdw_handle_slave_status()
1812 		    slave->status != SDW_SLAVE_UNATTACHED) {  in sdw_handle_slave_status()
1813 			dev_warn(&slave->dev, "Slave %d state check1: UNATTACHED, status was %d\n",  in sdw_handle_slave_status()
1814 				 i, slave->status);  in sdw_handle_slave_status()
1815 			sdw_modify_slave_status(slave, SDW_SLAVE_UNATTACHED);  in sdw_handle_slave_status()
1818 			ret = sdw_update_slave_status(slave, status[i]);  in sdw_handle_slave_status()
1820 				dev_warn(&slave->dev, "Update Slave status failed:%d\n", ret);  in sdw_handle_slave_status()
1825 		dev_dbg(bus->dev, "Slave attached, programming device number\n");  in sdw_handle_slave_status()
1845 	/* Continue to check other slave statuses */  in sdw_handle_slave_status()
1854 		slave = sdw_get_slave(bus, i);  in sdw_handle_slave_status()
1855 		if (!slave)  in sdw_handle_slave_status()
1862 			if (slave->status == SDW_SLAVE_UNATTACHED)  in sdw_handle_slave_status()
1865 			dev_warn(&slave->dev, "Slave %d state check2: UNATTACHED, status was %d\n",  in sdw_handle_slave_status()
1866 				 i, slave->status);  in sdw_handle_slave_status()
1868 			sdw_modify_slave_status(slave, SDW_SLAVE_UNATTACHED);  in sdw_handle_slave_status()
1872 			ret = sdw_handle_slave_alerts(slave);  in sdw_handle_slave_status()
1874 				dev_err(&slave->dev,  in sdw_handle_slave_status()
1875 					"Slave %d alert handling failed: %d\n",  in sdw_handle_slave_status()
1880 			if (slave->status == SDW_SLAVE_ATTACHED)  in sdw_handle_slave_status()
1883 			prev_status = slave->status;  in sdw_handle_slave_status()
1884 			sdw_modify_slave_status(slave, SDW_SLAVE_ATTACHED);  in sdw_handle_slave_status()
1891 			ret = sdw_initialize_slave(slave);  in sdw_handle_slave_status()
1893 				dev_err(&slave->dev,  in sdw_handle_slave_status()
1894 					"Slave %d initialization failed: %d\n",  in sdw_handle_slave_status()
1900 			dev_err(&slave->dev, "Invalid slave %d status:%d\n",  in sdw_handle_slave_status()
1905 		ret = sdw_update_slave_status(slave, status[i]);  in sdw_handle_slave_status()
1907 			dev_err(&slave->dev,  in sdw_handle_slave_status()
1908 				"Update Slave status failed:%d\n", ret);  in sdw_handle_slave_status()
1910 			dev_dbg(&slave->dev,  in sdw_handle_slave_status()
1911 				"signaling initialization completion for Slave %d\n",  in sdw_handle_slave_status()
1912 				slave->dev_num);  in sdw_handle_slave_status()
1914 			complete(&slave->initialization_complete);  in sdw_handle_slave_status()
1926 			pm_request_resume(&slave->dev);  in sdw_handle_slave_status()
1936 	struct sdw_slave *slave;  in sdw_clear_slave_status()  local
1948 		slave = sdw_get_slave(bus, i);  in sdw_clear_slave_status()
1949 		if (!slave)  in sdw_clear_slave_status()
1952 		if (slave->status != SDW_SLAVE_UNATTACHED) {  in sdw_clear_slave_status()
1953 			sdw_modify_slave_status(slave, SDW_SLAVE_UNATTACHED);  in sdw_clear_slave_status()
1954 			slave->first_interrupt_done = false;  in sdw_clear_slave_status()
1955 			sdw_update_slave_status(slave, SDW_SLAVE_UNATTACHED);  in sdw_clear_slave_status()
1959 		slave->unattach_request = request;  in sdw_clear_slave_status()