Lines Matching +full:device +full:- +full:tree

1 // SPDX-License-Identifier: GPL-2.0+
15 #include <linux/device.h>
16 #include <linux/dma-mapping.h>
28 { .compatible = "simple-bus", },
29 { .compatible = "simple-mfd", },
32 { .compatible = "arm,amba-bus", },
38 * of_find_device_by_node - Find the platform_device associated with a node
39 * @np: Pointer to device tree node
41 * Takes a reference to the embedded struct device which needs to be dropped
48 struct device *dev; in of_find_device_by_node()
57 BUG_ON(ofdev->dev.of_node == NULL); in of_device_add()
61 ofdev->name = dev_name(&ofdev->dev); in of_device_add()
62 ofdev->id = PLATFORM_DEVID_NONE; in of_device_add()
65 * If this device has not binding numa node in devicetree, that is in of_device_add()
67 * device is on the same node as the parent. in of_device_add()
69 set_dev_node(&ofdev->dev, of_node_to_nid(ofdev->dev.of_node)); in of_device_add()
71 return device_add(&ofdev->dev); in of_device_add()
76 device_initialize(&pdev->dev); in of_device_register()
83 device_unregister(&ofdev->dev); in of_device_unregister()
89 { .compatible = "operating-points-v2", },
94 * The following routines scan a subtree and registers a device for
98 * mechanism for creating devices from device tree nodes.
102 * of_device_alloc - Allocate and initialize an of_device
103 * @np: device node to assign to device
104 * @bus_id: Name to assign to the device. May be null to use default name.
105 * @parent: Parent device.
109 struct device *parent) in of_device_alloc()
130 dev->num_resources = num_reg; in of_device_alloc()
131 dev->resource = res; in of_device_alloc()
138 /* setup generic device info */ in of_device_alloc()
139 device_set_node(&dev->dev, of_fwnode_handle(of_node_get(np))); in of_device_alloc()
140 dev->dev.parent = parent ? : &platform_bus; in of_device_alloc()
143 dev_set_name(&dev->dev, "%s", bus_id); in of_device_alloc()
145 of_device_make_bus_id(&dev->dev); in of_device_alloc()
152 * of_platform_device_create_pdata - Alloc, initialize and register an of_device
153 * @np: pointer to node to create device for
154 * @bus_id: name to assign device
156 * @parent: Linux device model parent device.
158 * Return: Pointer to created platform device, or NULL if a device was not
165 struct device *parent) in of_platform_device_create_pdata()
169 pr_debug("create platform device: %pOF\n", np); in of_platform_device_create_pdata()
179 dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); in of_platform_device_create_pdata()
180 if (!dev->dev.dma_mask) in of_platform_device_create_pdata()
181 dev->dev.dma_mask = &dev->dev.coherent_dma_mask; in of_platform_device_create_pdata()
182 dev->dev.bus = &platform_bus_type; in of_platform_device_create_pdata()
183 dev->dev.platform_data = platform_data; in of_platform_device_create_pdata()
184 of_msi_configure(&dev->dev, dev->dev.of_node); in of_platform_device_create_pdata()
199 * of_platform_device_create - Alloc, initialize and register an of_device
200 * @np: pointer to node to create device for
201 * @bus_id: name to assign device
202 * @parent: Linux device model parent device.
204 * Return: Pointer to created platform device, or NULL if a device was not
209 struct device *parent) in of_platform_device_create()
219 struct device *parent) in of_amba_device_create()
224 pr_debug("Creating amba device %pOF\n", node); in of_amba_device_create()
235 dev->dev.coherent_dma_mask = DMA_BIT_MASK(32); in of_amba_device_create()
236 dev->dev.dma_mask = &dev->dev.coherent_dma_mask; in of_amba_device_create()
238 /* setup generic device info */ in of_amba_device_create()
239 device_set_node(&dev->dev, of_fwnode_handle(node)); in of_amba_device_create()
240 dev->dev.parent = parent ? : &platform_bus; in of_amba_device_create()
241 dev->dev.platform_data = platform_data; in of_amba_device_create()
243 dev_set_name(&dev->dev, "%s", bus_id); in of_amba_device_create()
245 of_device_make_bus_id(&dev->dev); in of_amba_device_create()
248 of_property_read_u32(node, "arm,primecell-periphid", &dev->periphid); in of_amba_device_create()
250 ret = of_address_to_resource(node, 0, &dev->res); in of_amba_device_create()
276 struct device *parent) in of_amba_device_create()
283 * of_dev_lookup() - Given a device node, lookup the preferred Linux name
296 for (; auxdata->compatible; auxdata++) { in of_dev_lookup()
297 if (!of_device_is_compatible(np, auxdata->compatible)) in of_dev_lookup()
301 if (res.start != auxdata->phys_addr) in of_dev_lookup()
303 pr_debug("%pOF: devname=%s\n", np, auxdata->name); in of_dev_lookup()
312 for (; auxdata->compatible; auxdata++) { in of_dev_lookup()
313 if (!of_device_is_compatible(np, auxdata->compatible)) in of_dev_lookup()
315 if (!auxdata->phys_addr && !auxdata->name) { in of_dev_lookup()
325 * of_platform_bus_create() - Create a device for a node and its children.
326 * @bus: device node of the bus to instantiate
328 * @lookup: auxdata table for matching id and platform_data with device nodes
329 * @parent: parent for new device, or NULL for top level.
338 struct device *parent, bool strict) in of_platform_bus_create()
348 pr_debug("%s() - skipping %pOF, no compatible prop\n", in of_platform_bus_create()
355 pr_debug("%s() - skipping %pOF node\n", __func__, bus); in of_platform_bus_create()
360 pr_debug("%s() - skipping %pOF, already populated\n", in of_platform_bus_create()
367 bus_id = auxdata->name; in of_platform_bus_create()
368 platform_data = auxdata->platform_data; in of_platform_bus_create()
374 * device tree files. in of_platform_bus_create()
386 rc = of_platform_bus_create(child, matches, lookup, &dev->dev, strict); in of_platform_bus_create()
395 * of_platform_bus_probe() - Probe the device-tree for platform buses
396 * @root: parent of the first level to probe or NULL for the root of the tree
405 struct device *parent) in of_platform_bus_probe()
412 return -EINVAL; in of_platform_bus_probe()
436 * of_platform_populate() - Populate platform_devices from device tree data
437 * @root: parent of the first level to probe or NULL for the root of the tree
439 * @lookup: auxdata table for matching id and platform_data with device nodes
442 * Similar to of_platform_bus_probe(), this function walks the device tree
444 * convention of requiring all device nodes to have a 'compatible' property,
457 struct device *parent) in of_platform_populate()
463 return -EINVAL; in of_platform_populate()
485 struct device *parent) in of_platform_default_populate()
494 { .compatible = "qcom,rmtfs-mem" },
495 { .compatible = "qcom,cmd-db" },
498 { .compatible = "nvmem-rmem" },
499 { .compatible = "google,open-dice" },
516 if (of_property_present(of_chosen, "linux,bootx-noscreen")) { in of_platform_default_populate_init()
524 dev = platform_device_alloc("bootx-noscreen", 0); in of_platform_default_populate_init()
526 return -ENOMEM; in of_platform_default_populate_init()
535 * For OF framebuffers, first create the device for the boot display, in of_platform_default_populate_init()
541 !of_get_property(node, "linux,boot-display", NULL)) in of_platform_default_populate_init()
543 dev = of_platform_device_create(node, "of-display", NULL); in of_platform_default_populate_init()
546 return -ENOMEM; in of_platform_default_populate_init()
553 const char *of_display_format = "of-display.%d"; in of_platform_default_populate_init()
565 * platform_devices for every node in /reserved-memory with a in of_platform_default_populate_init()
577 node = of_get_compatible_child(of_chosen, "simple-framebuffer"); in of_platform_default_populate_init()
580 * Since a "simple-framebuffer" device is already added in of_platform_default_populate_init()
582 * to prevent it from registering another device for the in of_platform_default_populate_init()
609 int of_platform_device_destroy(struct device *dev, void *data) in of_platform_device_destroy()
611 /* Do not touch devices not populated from the device tree */ in of_platform_device_destroy()
612 if (!dev->of_node || !of_node_check_flag(dev->of_node, OF_POPULATED)) in of_platform_device_destroy()
616 if (of_node_check_flag(dev->of_node, OF_POPULATED_BUS)) in of_platform_device_destroy()
619 of_node_clear_flag(dev->of_node, OF_POPULATED); in of_platform_device_destroy()
620 of_node_clear_flag(dev->of_node, OF_POPULATED_BUS); in of_platform_device_destroy()
622 if (dev->bus == &platform_bus_type) in of_platform_device_destroy()
625 else if (dev->bus == &amba_bustype) in of_platform_device_destroy()
634 * of_platform_depopulate() - Remove devices populated from device tree
635 * @parent: device which children will be removed
638 * of the given device (and, recursively, their children) that have been
639 * created from their respective device tree nodes (and only those,
640 * leaving others - eg. manually created - unharmed).
642 void of_platform_depopulate(struct device *parent) in of_platform_depopulate()
644 if (parent->of_node && of_node_check_flag(parent->of_node, OF_POPULATED_BUS)) { in of_platform_depopulate()
646 of_node_clear_flag(parent->of_node, OF_POPULATED_BUS); in of_platform_depopulate()
651 static void devm_of_platform_populate_release(struct device *dev, void *res) in devm_of_platform_populate_release()
653 of_platform_depopulate(*(struct device **)res); in devm_of_platform_populate_release()
657 * devm_of_platform_populate() - Populate platform_devices from device tree data
658 * @dev: device that requested to populate from device tree data
661 * of_platform_depopulate() when the device is unbound from the bus.
665 int devm_of_platform_populate(struct device *dev) in devm_of_platform_populate()
667 struct device **ptr; in devm_of_platform_populate()
671 return -EINVAL; in devm_of_platform_populate()
676 return -ENOMEM; in devm_of_platform_populate()
678 ret = of_platform_populate(dev->of_node, NULL, NULL, dev); in devm_of_platform_populate()
690 static int devm_of_platform_match(struct device *dev, void *res, void *data) in devm_of_platform_match()
692 struct device **ptr = res; in devm_of_platform_match()
703 * devm_of_platform_depopulate() - Remove devices populated from device tree
704 * @dev: device that requested to depopulate from device tree data
707 * of the given device (and, recursively, their children) that have been
708 * created from their respective device tree nodes (and only those,
709 * leaving others - eg. manually created - unharmed).
711 void devm_of_platform_depopulate(struct device *dev) in devm_of_platform_depopulate()
733 parent = rd->dn->parent; in of_platform_notify()
740 if (of_node_check_flag(rd->dn, OF_POPULATED)) in of_platform_notify()
744 * Clear the flag before adding the device so that fw_devlink in of_platform_notify()
745 * doesn't skip adding consumers to this device. in of_platform_notify()
747 rd->dn->fwnode.flags &= ~FWNODE_FLAG_NOT_DEVICE; in of_platform_notify()
748 /* pdev_parent may be NULL when no bus platform device */ in of_platform_notify()
750 pdev = of_platform_device_create(rd->dn, NULL, in of_platform_notify()
751 pdev_parent ? &pdev_parent->dev : NULL); in of_platform_notify()
756 __func__, rd->dn); in of_platform_notify()
758 return notifier_from_errno(-EINVAL); in of_platform_notify()
765 if (!of_node_check_flag(rd->dn, OF_POPULATED)) in of_platform_notify()
768 /* find our device by node */ in of_platform_notify()
769 pdev = of_find_device_by_node(rd->dn); in of_platform_notify()
774 of_platform_device_destroy(&pdev->dev, &children_left); in of_platform_notify()