1 // SPDX-License-Identifier: GPL-2.0
3  * System Control and Management Interface (SCMI) Message Protocol bus layer
25 	const struct scmi_device_id *id = scmi_drv->id_table;  in scmi_dev_match_id()  local
27 	if (!id)  in scmi_dev_match_id()
30 	for (; id->protocol_id; id++)  in scmi_dev_match_id()
31 		if (id->protocol_id == scmi_dev->protocol_id) {  in scmi_dev_match_id()
32 			if (!id->name)  in scmi_dev_match_id()
33 				return id;  in scmi_dev_match_id()
34 			else if (!strcmp(id->name, scmi_dev->name))  in scmi_dev_match_id()
35 				return id;  in scmi_dev_match_id()
45 	const struct scmi_device_id *id;  in scmi_dev_match()  local
47 	id = scmi_dev_match_id(scmi_dev, scmi_drv);  in scmi_dev_match()
48 	if (id)  in scmi_dev_match()
59 		return -EINVAL;  in scmi_protocol_init()
70 	struct scmi_driver *scmi_drv = to_scmi_driver(dev->driver);  in scmi_dev_probe()
72 	const struct scmi_device_id *id;  in scmi_dev_probe()  local
75 	id = scmi_dev_match_id(scmi_dev, scmi_drv);  in scmi_dev_probe()
76 	if (!id)  in scmi_dev_probe()
77 		return -ENODEV;  in scmi_dev_probe()
79 	if (!scmi_dev->handle)  in scmi_dev_probe()
80 		return -EPROBE_DEFER;  in scmi_dev_probe()
82 	ret = scmi_protocol_init(scmi_dev->protocol_id, scmi_dev->handle);  in scmi_dev_probe()
86 	/* Skip protocol initialisation for additional devices */  in scmi_dev_probe()
88 		    scmi_dev->protocol_id);  in scmi_dev_probe()
90 	return scmi_drv->probe(scmi_dev);  in scmi_dev_probe()
95 	struct scmi_driver *scmi_drv = to_scmi_driver(dev->driver);  in scmi_dev_remove()
98 	if (scmi_drv->remove)  in scmi_dev_remove()
99 		scmi_drv->remove(scmi_dev);  in scmi_dev_remove()
116 	driver->driver.bus = &scmi_bus_type;  in scmi_driver_register()
117 	driver->driver.name = driver->name;  in scmi_driver_register()
118 	driver->driver.owner = owner;  in scmi_driver_register()
119 	driver->driver.mod_name = mod_name;  in scmi_driver_register()
121 	retval = driver_register(&driver->driver);  in scmi_driver_register()
123 		pr_debug("registered new scmi driver %s\n", driver->name);  in scmi_driver_register()
131 	driver_unregister(&driver->driver);  in scmi_driver_unregister()
141 scmi_device_create(struct device_node *np, struct device *parent, int protocol,  in scmi_device_create()  argument
144 	int id, retval;  in scmi_device_create()  local
151 	scmi_dev->name = kstrdup_const(name ?: "unknown", GFP_KERNEL);  in scmi_device_create()
152 	if (!scmi_dev->name) {  in scmi_device_create()
157 	id = ida_simple_get(&scmi_bus_id, 1, 0, GFP_KERNEL);  in scmi_device_create()
158 	if (id < 0) {  in scmi_device_create()
159 		kfree_const(scmi_dev->name);  in scmi_device_create()
164 	scmi_dev->id = id;  in scmi_device_create()
165 	scmi_dev->protocol_id = protocol;  in scmi_device_create()
166 	scmi_dev->dev.parent = parent;  in scmi_device_create()
167 	scmi_dev->dev.of_node = np;  in scmi_device_create()
168 	scmi_dev->dev.bus = &scmi_bus_type;  in scmi_device_create()
169 	scmi_dev->dev.release = scmi_device_release;  in scmi_device_create()
170 	dev_set_name(&scmi_dev->dev, "scmi_dev.%d", id);  in scmi_device_create()
172 	retval = device_register(&scmi_dev->dev);  in scmi_device_create()
178 	kfree_const(scmi_dev->name);  in scmi_device_create()
179 	put_device(&scmi_dev->dev);  in scmi_device_create()
180 	ida_simple_remove(&scmi_bus_id, id);  in scmi_device_create()
186 	kfree_const(scmi_dev->name);  in scmi_device_destroy()
187 	scmi_handle_put(scmi_dev->handle);  in scmi_device_destroy()
188 	ida_simple_remove(&scmi_bus_id, scmi_dev->id);  in scmi_device_destroy()
189 	device_unregister(&scmi_dev->dev);  in scmi_device_destroy()
194 	scmi_dev->handle = scmi_handle_get(&scmi_dev->dev);  in scmi_set_handle()
239 		pr_err("scmi protocol bus register failed (%d)\n", retval);  in scmi_bus_init()