1 // SPDX-License-Identifier: GPL-2.0-only
3  * Copyright (c) 2011-2016 Synaptics Incorporated
64 	return dev->type == &rmi_device_type;  in rmi_is_physical_device()
68  * rmi_register_transport_device - register a transport device connection
70  * on a bus (such as SPI, I2C, and so on) to the RMI4 sensor.
82 		return -ENOMEM;  in rmi_register_transport_device()
84 	device_initialize(&rmi_dev->dev);  in rmi_register_transport_device()
86 	rmi_dev->xport = xport;  in rmi_register_transport_device()
87 	rmi_dev->number = atomic_inc_return(&transport_device_count) - 1;  in rmi_register_transport_device()
89 	dev_set_name(&rmi_dev->dev, "rmi4-%02d", rmi_dev->number);  in rmi_register_transport_device()
91 	rmi_dev->dev.bus = &rmi_bus_type;  in rmi_register_transport_device()
92 	rmi_dev->dev.type = &rmi_device_type;  in rmi_register_transport_device()
94 	xport->rmi_dev = rmi_dev;  in rmi_register_transport_device()
96 	error = device_add(&rmi_dev->dev);  in rmi_register_transport_device()
100 	rmi_dbg(RMI_DEBUG_CORE, xport->dev,  in rmi_register_transport_device()
102 		dev_name(rmi_dev->xport->dev), dev_name(&rmi_dev->dev));  in rmi_register_transport_device()
107 	put_device(&rmi_dev->dev);  in rmi_register_transport_device()
113  * rmi_unregister_transport_device - unregister a transport device connection
119 	struct rmi_device *rmi_dev = xport->rmi_dev;  in rmi_unregister_transport_device()
121 	device_del(&rmi_dev->dev);  in rmi_unregister_transport_device()
122 	put_device(&rmi_dev->dev);  in rmi_unregister_transport_device()
143 	return dev->type == &rmi_function_type;  in rmi_is_function_device()
151 	return fn->fd.function_number == handler->func;  in rmi_function_match()
158 	struct device_node *node = fn->rmi_dev->xport->dev->of_node;  in rmi_function_of_probe()
160 	snprintf(of_name, sizeof(of_name), "rmi4-f%02x",  in rmi_function_of_probe()
161 		fn->fd.function_number);  in rmi_function_of_probe()
162 	fn->dev.of_node = of_get_child_by_name(node, of_name);  in rmi_function_of_probe()
170 	.name = "rmi4",
176 	struct rmi_driver_data *drvdata = dev_get_drvdata(&fn->rmi_dev->dev);  in rmi_create_function_irq()
179 	for (i = 0; i < fn->num_of_irqs; i++) {  in rmi_create_function_irq()
180 		set_bit(fn->irq_pos + i, fn->irq_mask);  in rmi_create_function_irq()
182 		fn->irq[i] = irq_create_mapping(drvdata->irqdomain,  in rmi_create_function_irq()
183 						fn->irq_pos + i);  in rmi_create_function_irq()
185 		irq_set_chip_data(fn->irq[i], fn);  in rmi_create_function_irq()
186 		irq_set_chip_and_handler(fn->irq[i], &rmi_irq_chip,  in rmi_create_function_irq()
188 		irq_set_nested_thread(fn->irq[i], 1);  in rmi_create_function_irq()
190 		error = devm_request_threaded_irq(&fn->dev, fn->irq[i], NULL,  in rmi_create_function_irq()
191 					handler->attention, IRQF_ONESHOT,  in rmi_create_function_irq()
192 					dev_name(&fn->dev), fn);  in rmi_create_function_irq()
194 			dev_err(&fn->dev, "Error %d registering IRQ\n", error);  in rmi_create_function_irq()
206 					to_rmi_function_handler(dev->driver);  in rmi_function_probe()
211 	if (handler->probe) {  in rmi_function_probe()
212 		error = handler->probe(fn);  in rmi_function_probe()
217 	if (fn->num_of_irqs && handler->attention) {  in rmi_function_probe()
230 					to_rmi_function_handler(dev->driver);  in rmi_function_remove()
232 	if (handler->remove)  in rmi_function_remove()
233 		handler->remove(fn);  in rmi_function_remove()
240 	struct rmi_device *rmi_dev = fn->rmi_dev;  in rmi_register_function()
243 	device_initialize(&fn->dev);  in rmi_register_function()
245 	dev_set_name(&fn->dev, "%s.fn%02x",  in rmi_register_function()
246 		     dev_name(&rmi_dev->dev), fn->fd.function_number);  in rmi_register_function()
248 	fn->dev.parent = &rmi_dev->dev;  in rmi_register_function()
249 	fn->dev.type = &rmi_function_type;  in rmi_register_function()
250 	fn->dev.bus = &rmi_bus_type;  in rmi_register_function()
252 	error = device_add(&fn->dev);  in rmi_register_function()
254 		dev_err(&rmi_dev->dev,  in rmi_register_function()
256 			dev_name(&fn->dev));  in rmi_register_function()
260 	rmi_dbg(RMI_DEBUG_CORE, &rmi_dev->dev, "Registered F%02X.\n",  in rmi_register_function()
261 			fn->fd.function_number);  in rmi_register_function()
266 	put_device(&fn->dev);  in rmi_register_function()
274 	rmi_dbg(RMI_DEBUG_CORE, &fn->dev, "Unregistering F%02X.\n",  in rmi_unregister_function()
275 			fn->fd.function_number);  in rmi_unregister_function()
277 	device_del(&fn->dev);  in rmi_unregister_function()
278 	of_node_put(fn->dev.of_node);  in rmi_unregister_function()
280 	for (i = 0; i < fn->num_of_irqs; i++)  in rmi_unregister_function()
281 		irq_dispose_mapping(fn->irq[i]);  in rmi_unregister_function()
283 	put_device(&fn->dev);  in rmi_unregister_function()
287  * rmi_register_function_handler - register a handler for an RMI function
300 	struct device_driver *driver = &handler->driver;  in __rmi_register_function_handler()
303 	driver->bus = &rmi_bus_type;  in __rmi_register_function_handler()
304 	driver->owner = owner;  in __rmi_register_function_handler()
305 	driver->mod_name = mod_name;  in __rmi_register_function_handler()
306 	driver->probe = rmi_function_probe;  in __rmi_register_function_handler()
307 	driver->remove = rmi_function_remove;  in __rmi_register_function_handler()
312 			driver->name, error);  in __rmi_register_function_handler()
321  * rmi_unregister_function_handler - unregister given RMI function handler
329 	driver_unregister(&handler->driver);  in rmi_unregister_function_handler()
348 	.name		= "rmi4",
383 	for (i = start_idx; i >= 0; i--)  in __rmi_unregister_function_handlers()
389 	__rmi_unregister_function_handlers(ARRAY_SIZE(fn_handlers) - 1);  in rmi_unregister_function_handlers()
401 				__func__, fn_handlers[i]->func, ret);  in rmi_register_function_handlers()
409 	__rmi_unregister_function_handlers(i - 1);  in rmi_register_function_handlers()
419 	retval = of_property_read_u32(dev->of_node, prop, &val);  in rmi_of_property_read_u32()
420 	if (retval && (!optional && retval == -EINVAL)) {  in rmi_of_property_read_u32()