1 // SPDX-License-Identifier: GPL-2.0+
20 #include <linux/reset.h>
28 	put_device(&mdiodev->dev);  in mdio_device_free()
34 	fwnode_handle_put(dev->fwnode);  in mdio_device_release()
43 	if (mdiodrv->mdiodrv.flags & MDIO_DEVICE_IS_PHY)  in mdio_device_bus_match()
46 	return strcmp(mdiodev->modalias, drv->name) == 0;  in mdio_device_bus_match()
56 		return ERR_PTR(-ENOMEM);  in mdio_device_create()
58 	mdiodev->dev.release = mdio_device_release;  in mdio_device_create()
59 	mdiodev->dev.parent = &bus->dev;  in mdio_device_create()
60 	mdiodev->dev.bus = &mdio_bus_type;  in mdio_device_create()
61 	mdiodev->device_free = mdio_device_free;  in mdio_device_create()
62 	mdiodev->device_remove = mdio_device_remove;  in mdio_device_create()
63 	mdiodev->bus = bus;  in mdio_device_create()
64 	mdiodev->addr = addr;  in mdio_device_create()
65 	mdiodev->reset_state = -1;  in mdio_device_create()
67 	dev_set_name(&mdiodev->dev, PHY_ID_FMT, bus->id, addr);  in mdio_device_create()
69 	device_initialize(&mdiodev->dev);  in mdio_device_create()
76  * mdio_device_register - Register the mdio device on the MDIO bus
83 	dev_dbg(&mdiodev->dev, "%s\n", __func__);  in mdio_device_register()
89 	err = device_add(&mdiodev->dev);  in mdio_device_register()
91 		pr_err("MDIO %d failed to add\n", mdiodev->addr);  in mdio_device_register()
104  * mdio_device_remove - Remove a previously registered mdio device from the
114 	device_del(&mdiodev->dev);  in mdio_device_remove()
123 	if (!mdiodev->reset_gpio && !mdiodev->reset_ctrl)  in mdio_device_reset()
126 	if (mdiodev->reset_state == value)  in mdio_device_reset()
129 	if (mdiodev->reset_gpio)  in mdio_device_reset()
130 		gpiod_set_value_cansleep(mdiodev->reset_gpio, value);  in mdio_device_reset()
132 	if (mdiodev->reset_ctrl) {  in mdio_device_reset()
134 			reset_control_assert(mdiodev->reset_ctrl);  in mdio_device_reset()
136 			reset_control_deassert(mdiodev->reset_ctrl);  in mdio_device_reset()
139 	d = value ? mdiodev->reset_assert_delay : mdiodev->reset_deassert_delay;  in mdio_device_reset()
143 	mdiodev->reset_state = value;  in mdio_device_reset()
148  * mdio_probe - probe an MDIO device
149  * @dev: device to probe
152  * and calling the driver to probe the device.
157 	struct device_driver *drv = mdiodev->dev.driver;  in mdio_probe()
161 	/* Deassert the reset signal */  in mdio_probe()
164 	if (mdiodrv->probe) {  in mdio_probe()
165 		err = mdiodrv->probe(mdiodev);  in mdio_probe()
167 			/* Assert the reset signal */  in mdio_probe()
178 	struct device_driver *drv = mdiodev->dev.driver;  in mdio_remove()
181 	if (mdiodrv->remove)  in mdio_remove()
182 		mdiodrv->remove(mdiodev);  in mdio_remove()
184 	/* Assert the reset signal */  in mdio_remove()
193 	struct device_driver *drv = mdiodev->dev.driver;  in mdio_shutdown()
196 	if (mdiodrv->shutdown)  in mdio_shutdown()
197 		mdiodrv->shutdown(mdiodev);  in mdio_shutdown()
201  * mdio_driver_register - register an mdio_driver with the MDIO layer
206 	struct mdio_driver_common *mdiodrv = &drv->mdiodrv;  in mdio_driver_register()
209 	pr_debug("%s: %s\n", __func__, mdiodrv->driver.name);  in mdio_driver_register()
211 	mdiodrv->driver.bus = &mdio_bus_type;  in mdio_driver_register()
212 	mdiodrv->driver.probe = mdio_probe;  in mdio_driver_register()
213 	mdiodrv->driver.remove = mdio_remove;  in mdio_driver_register()
214 	mdiodrv->driver.shutdown = mdio_shutdown;  in mdio_driver_register()
216 	retval = driver_register(&mdiodrv->driver);  in mdio_driver_register()
219 		       mdiodrv->driver.name, retval);  in mdio_driver_register()
230 	struct mdio_driver_common *mdiodrv = &drv->mdiodrv;  in mdio_driver_unregister()
232 	driver_unregister(&mdiodrv->driver);  in mdio_driver_unregister()