79 	struct fsi_master	*master;  member
91 static int fsi_master_read(struct fsi_master *master, int link,
93 static int fsi_master_write(struct fsi_master *master, int link,
95 static int fsi_master_break(struct fsi_master *master, int link);
190 	struct fsi_master *master = slave->master;  in fsi_slave_report_and_clear_errors()  local
198 	rc = fsi_master_read(master, link, id, FSI_SLAVE_BASE + FSI_SISC,  in fsi_slave_report_and_clear_errors()
203 	rc =  fsi_master_read(master, link, id, FSI_SLAVE_BASE + FSI_SSTAT,  in fsi_slave_report_and_clear_errors()
212 	return fsi_master_write(master, link, id, FSI_SLAVE_BASE + FSI_SISC,  in fsi_slave_report_and_clear_errors()
216 static int fsi_slave_set_smode(struct fsi_master *master, int link, int id);
221 	struct fsi_master *master = slave->master;  in fsi_slave_handle_error()  local
243 	if (master->term) {  in fsi_slave_handle_error()
244 		rc = master->term(master, link, id);  in fsi_slave_handle_error()
246 			rc = fsi_master_read(master, link, id, 0,  in fsi_slave_handle_error()
256 	rc = fsi_master_break(master, link);  in fsi_slave_handle_error()
260 	rc = fsi_slave_set_smode(master, link, id);  in fsi_slave_handle_error()
278 		rc = fsi_master_read(slave->master, slave->link,  in fsi_slave_read()
303 		rc = fsi_master_write(slave->master, slave->link,  in fsi_slave_write()
403 					slave->master->idx, slave->link,  in fsi_slave_scan()
516 	struct fsi_master *master = slave->master;  in fsi_slave_sysfs_term_write()  local
518 	if (!master->term)  in fsi_slave_sysfs_term_write()
521 	master->term(master, slave->link, slave->id);  in fsi_slave_sysfs_term_write()
566 static int fsi_slave_set_smode(struct fsi_master *master, int link, int id)  in fsi_slave_set_smode()  argument
576 	return fsi_master_write(master, link, id, FSI_SLAVE_BASE + FSI_SMODE,  in fsi_slave_set_smode()
587 static int fsi_slave_init(struct fsi_master *master, int link, uint8_t id)  in fsi_slave_init()  argument
600 	rc = fsi_master_read(master, link, id, 0, &chip_id, sizeof(chip_id));  in fsi_slave_init()
602 		dev_dbg(&master->dev, "can't read slave %02x:%02x %d\n",  in fsi_slave_init()
610 		dev_warn(&master->dev, "slave %02x:%02x invalid chip id CRC!\n",  in fsi_slave_init()
615 	dev_info(&master->dev, "fsi: found chip %08x at %02x:%02x:%02x\n",  in fsi_slave_init()
616 			chip_id, master->idx, link, id);  in fsi_slave_init()
618 	rc = fsi_slave_set_smode(master, link, id);  in fsi_slave_init()
620 		dev_warn(&master->dev,  in fsi_slave_init()
629 	if (master->flags & FSI_MASTER_FLAG_SWCLOCK) {  in fsi_slave_init()
631 		rc = fsi_master_write(master, link, id,  in fsi_slave_init()
635 			dev_warn(&master->dev,  in fsi_slave_init()
647 	slave->master = master;  in fsi_slave_init()
648 	slave->dev.parent = &master->dev;  in fsi_slave_init()
657 		dev_warn(&master->dev, "failed to create slave device: %d\n",  in fsi_slave_init()
673 		dev_dbg(&master->dev, "failed during slave scan with: %d\n",  in fsi_slave_init()
691 static int fsi_master_read(struct fsi_master *master, int link,  in fsi_master_read()  argument
696 	trace_fsi_master_read(master, link, slave_id, addr, size);  in fsi_master_read()
700 		rc = master->read(master, link, slave_id, addr, val, size);  in fsi_master_read()
702 	trace_fsi_master_rw_result(master, link, slave_id, addr, size,  in fsi_master_read()
708 static int fsi_master_write(struct fsi_master *master, int link,  in fsi_master_write()  argument
713 	trace_fsi_master_write(master, link, slave_id, addr, size, val);  in fsi_master_write()
717 		rc = master->write(master, link, slave_id, addr, val, size);  in fsi_master_write()
719 	trace_fsi_master_rw_result(master, link, slave_id, addr, size,  in fsi_master_write()
725 static int fsi_master_link_enable(struct fsi_master *master, int link)  in fsi_master_link_enable()  argument
727 	if (master->link_enable)  in fsi_master_link_enable()
728 		return master->link_enable(master, link);  in fsi_master_link_enable()
736 static int fsi_master_break(struct fsi_master *master, int link)  in fsi_master_break()  argument
738 	trace_fsi_master_break(master, link);  in fsi_master_break()
740 	if (master->send_break)  in fsi_master_break()
741 		return master->send_break(master, link);  in fsi_master_break()
746 static int fsi_master_scan(struct fsi_master *master)  in fsi_master_scan()  argument
750 	for (link = 0; link < master->n_links; link++) {  in fsi_master_scan()
751 		rc = fsi_master_link_enable(master, link);  in fsi_master_scan()
753 			dev_dbg(&master->dev,  in fsi_master_scan()
757 		rc = fsi_master_break(master, link);  in fsi_master_scan()
759 			dev_dbg(&master->dev,  in fsi_master_scan()
764 		fsi_slave_init(master, link, 0);  in fsi_master_scan()
783 static void fsi_master_unscan(struct fsi_master *master)  in fsi_master_unscan()  argument
785 	device_for_each_child(&master->dev, NULL, fsi_master_remove_slave);  in fsi_master_unscan()
791 	struct fsi_master *master = to_fsi_master(dev);  in master_rescan_store()  local
794 	fsi_master_unscan(master);  in master_rescan_store()
795 	rc = fsi_master_scan(master);  in master_rescan_store()
807 	struct fsi_master *master = to_fsi_master(dev);  in master_break_store()  local
809 	fsi_master_break(master, 0);  in master_break_store()
816 int fsi_master_register(struct fsi_master *master)  in fsi_master_register()  argument
820 	if (!master)  in fsi_master_register()
823 	master->idx = ida_simple_get(&master_ida, 0, INT_MAX, GFP_KERNEL);  in fsi_master_register()
824 	dev_set_name(&master->dev, "fsi%d", master->idx);  in fsi_master_register()
826 	rc = device_register(&master->dev);  in fsi_master_register()
828 		ida_simple_remove(&master_ida, master->idx);  in fsi_master_register()
832 	rc = device_create_file(&master->dev, &dev_attr_rescan);  in fsi_master_register()
834 		device_unregister(&master->dev);  in fsi_master_register()
835 		ida_simple_remove(&master_ida, master->idx);  in fsi_master_register()
839 	rc = device_create_file(&master->dev, &dev_attr_break);  in fsi_master_register()
841 		device_unregister(&master->dev);  in fsi_master_register()
842 		ida_simple_remove(&master_ida, master->idx);  in fsi_master_register()
846 	fsi_master_scan(master);  in fsi_master_register()
852 void fsi_master_unregister(struct fsi_master *master)  in fsi_master_unregister()  argument
854 	if (master->idx >= 0) {  in fsi_master_unregister()
855 		ida_simple_remove(&master_ida, master->idx);  in fsi_master_unregister()
856 		master->idx = -1;  in fsi_master_unregister()
859 	fsi_master_unscan(master);  in fsi_master_unregister()
860 	device_unregister(&master->dev);  in fsi_master_unregister()