Lines Matching +full:num +full:- +full:irqs
1 // SPDX-License-Identifier: GPL-2.0
3 * platform.c - platform 'pseudo' bus for legacy devices
5 * Copyright (c) 2002-3 Patrick Mochel
6 * Copyright (c) 2002-3 Open Source Development Labs
8 * Please see Documentation/driver-api/driver-model/platform.rst for more
20 #include <linux/dma-mapping.h>
28 #include <linux/clk/clk-conf.h>
34 #include <linux/dma-map-ops.h>
48 * platform_get_resource - get a resource for a device
51 * @num: resource index
56 unsigned int type, unsigned int num) in platform_get_resource() argument
60 for (i = 0; i < dev->num_resources; i++) { in platform_get_resource()
61 struct resource *r = &dev->resource[i]; in platform_get_resource()
63 if (type == resource_type(r) && num-- == 0) in platform_get_resource()
71 unsigned int num) in platform_get_mem_or_io() argument
75 for (i = 0; i < dev->num_resources; i++) { in platform_get_mem_or_io()
76 struct resource *r = &dev->resource[i]; in platform_get_mem_or_io()
78 if ((resource_type(r) & (IORESOURCE_MEM|IORESOURCE_IO)) && num-- == 0) in platform_get_mem_or_io()
87 * devm_platform_get_and_ioremap_resource - call devm_ioremap_resource() for a
107 return devm_ioremap_resource(&pdev->dev, r); in devm_platform_get_and_ioremap_resource()
112 * devm_platform_ioremap_resource - call devm_ioremap_resource() for a platform
130 * devm_platform_ioremap_resource_byname - call devm_ioremap_resource for
148 return devm_ioremap_resource(&pdev->dev, res); in devm_platform_ioremap_resource_byname()
154 * platform_get_irq_optional - get an optional IRQ for a device
156 * @num: IRQ number index
169 * Return: non-zero IRQ number on success, negative error number on failure.
171 int platform_get_irq_optional(struct platform_device *dev, unsigned int num) in platform_get_irq_optional() argument
175 /* sparc does not have irqs represented as IORESOURCE_IRQ resources */ in platform_get_irq_optional()
176 if (!dev || num >= dev->archdata.num_irqs) in platform_get_irq_optional()
178 ret = dev->archdata.irqs[num]; in platform_get_irq_optional()
183 if (IS_ENABLED(CONFIG_OF_IRQ) && dev->dev.of_node) { in platform_get_irq_optional()
184 ret = of_irq_get(dev->dev.of_node, num); in platform_get_irq_optional()
185 if (ret > 0 || ret == -EPROBE_DEFER) in platform_get_irq_optional()
189 r = platform_get_resource(dev, IORESOURCE_IRQ, num); in platform_get_irq_optional()
190 if (has_acpi_companion(&dev->dev)) { in platform_get_irq_optional()
191 if (r && r->flags & IORESOURCE_DISABLED) { in platform_get_irq_optional()
192 ret = acpi_irq_get(ACPI_HANDLE(&dev->dev), num, r); in platform_get_irq_optional()
199 * The resources may pass trigger flags to the irqs that need in platform_get_irq_optional()
201 * IORESOURCE_BITS correspond 1-to-1 to the IRQF_TRIGGER* in platform_get_irq_optional()
204 if (r && r->flags & IORESOURCE_BITS) { in platform_get_irq_optional()
207 irqd = irq_get_irq_data(r->start); in platform_get_irq_optional()
210 irqd_set_trigger_type(irqd, r->flags & IORESOURCE_BITS); in platform_get_irq_optional()
214 ret = r->start; in platform_get_irq_optional()
225 if (num == 0 && has_acpi_companion(&dev->dev)) { in platform_get_irq_optional()
226 ret = acpi_dev_gpio_irq_get(ACPI_COMPANION(&dev->dev), num); in platform_get_irq_optional()
227 /* Our callers expect -ENXIO for missing IRQs. */ in platform_get_irq_optional()
228 if (ret >= 0 || ret == -EPROBE_DEFER) in platform_get_irq_optional()
234 ret = -ENXIO; in platform_get_irq_optional()
237 return -EINVAL; in platform_get_irq_optional()
243 * platform_get_irq - get an IRQ for a device
245 * @num: IRQ number index
257 * Return: non-zero IRQ number on success, negative error number on failure.
259 int platform_get_irq(struct platform_device *dev, unsigned int num) in platform_get_irq() argument
263 ret = platform_get_irq_optional(dev, num); in platform_get_irq()
265 return dev_err_probe(&dev->dev, ret, in platform_get_irq()
266 "IRQ index %u not found\n", num); in platform_get_irq()
273 * platform_irq_count - Count the number of IRQs a platform device uses
276 * Return: Number of IRQs a platform device uses or EPROBE_DEFER
285 if (ret == -EPROBE_DEFER) in platform_irq_count()
312 for (i = 0; i < ptr->count; i++) { in devm_platform_get_irqs_affinity_release()
313 irq_dispose_mapping(ptr->irq[i]); in devm_platform_get_irqs_affinity_release()
321 * devm_platform_get_irqs_affinity - devm method to get a set of IRQs for a
327 * @irqs: pointer holder for IRQ numbers
329 * Gets a set of IRQs for a platform device, and updates IRQ afffinty according
338 int **irqs) in devm_platform_get_irqs_affinity() argument
346 return -EPERM; in devm_platform_get_irqs_affinity()
349 return -ERANGE; in devm_platform_get_irqs_affinity()
356 return -ENOSPC; in devm_platform_get_irqs_affinity()
360 return -ENOSPC; in devm_platform_get_irqs_affinity()
369 return -ENOMEM; in devm_platform_get_irqs_affinity()
371 ptr->count = nvec; in devm_platform_get_irqs_affinity()
379 ptr->irq[i] = irq; in devm_platform_get_irqs_affinity()
384 ret = -ENOMEM; in devm_platform_get_irqs_affinity()
389 ret = irq_update_affinity_desc(ptr->irq[i], &desc[i]); in devm_platform_get_irqs_affinity()
391 dev_err(&dev->dev, "failed to update irq%d affinity descriptor (%d)\n", in devm_platform_get_irqs_affinity()
392 ptr->irq[i], ret); in devm_platform_get_irqs_affinity()
397 devres_add(&dev->dev, ptr); in devm_platform_get_irqs_affinity()
401 *irqs = ptr->irq; in devm_platform_get_irqs_affinity()
414 * platform_get_resource_byname - get a resource for a device by name
425 for (i = 0; i < dev->num_resources; i++) { in platform_get_resource_byname()
426 struct resource *r = &dev->resource[i]; in platform_get_resource_byname()
428 if (unlikely(!r->name)) in platform_get_resource_byname()
431 if (type == resource_type(r) && !strcmp(r->name, name)) in platform_get_resource_byname()
444 if (IS_ENABLED(CONFIG_OF_IRQ) && dev->dev.of_node) { in __platform_get_irq_byname()
445 ret = of_irq_get_byname(dev->dev.of_node, name); in __platform_get_irq_byname()
446 if (ret > 0 || ret == -EPROBE_DEFER) in __platform_get_irq_byname()
452 if (WARN(!r->start, "0 is an invalid IRQ number\n")) in __platform_get_irq_byname()
453 return -EINVAL; in __platform_get_irq_byname()
454 return r->start; in __platform_get_irq_byname()
457 return -ENXIO; in __platform_get_irq_byname()
461 * platform_get_irq_byname - get an IRQ for a device by name
467 * Return: non-zero IRQ number on success, negative error number on failure.
475 return dev_err_probe(&dev->dev, ret, "IRQ %s not found\n", in platform_get_irq_byname()
482 * platform_get_irq_byname_optional - get an optional IRQ for a device by name
489 * Return: non-zero IRQ number on success, negative error number on failure.
499 * platform_add_devices - add a numbers of platform devices
501 * @num: number of platform devices in array
503 int platform_add_devices(struct platform_device **devs, int num) in platform_add_devices() argument
507 for (i = 0; i < num; i++) { in platform_add_devices()
510 while (--i >= 0) in platform_add_devices()
531 pdev->dev.dma_parms = &pdev->dma_parms; in setup_pdev_dma_masks()
533 if (!pdev->dev.coherent_dma_mask) in setup_pdev_dma_masks()
534 pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); in setup_pdev_dma_masks()
535 if (!pdev->dev.dma_mask) { in setup_pdev_dma_masks()
536 pdev->platform_dma_mask = DMA_BIT_MASK(32); in setup_pdev_dma_masks()
537 pdev->dev.dma_mask = &pdev->platform_dma_mask; in setup_pdev_dma_masks()
542 * platform_device_put - destroy a platform device
551 put_device(&pdev->dev); in platform_device_put()
560 of_node_put(pa->pdev.dev.of_node); in platform_device_release()
561 kfree(pa->pdev.dev.platform_data); in platform_device_release()
562 kfree(pa->pdev.mfd_cell); in platform_device_release()
563 kfree(pa->pdev.resource); in platform_device_release()
564 kfree(pa->pdev.driver_override); in platform_device_release()
569 * platform_device_alloc - create a platform device
582 strcpy(pa->name, name); in platform_device_alloc()
583 pa->pdev.name = pa->name; in platform_device_alloc()
584 pa->pdev.id = id; in platform_device_alloc()
585 device_initialize(&pa->pdev.dev); in platform_device_alloc()
586 pa->pdev.dev.release = platform_device_release; in platform_device_alloc()
587 setup_pdev_dma_masks(&pa->pdev); in platform_device_alloc()
590 return pa ? &pa->pdev : NULL; in platform_device_alloc()
595 * platform_device_add_resources - add resources to a platform device
598 * @num: number of resources
605 const struct resource *res, unsigned int num) in platform_device_add_resources() argument
610 r = kmemdup(res, sizeof(struct resource) * num, GFP_KERNEL); in platform_device_add_resources()
612 return -ENOMEM; in platform_device_add_resources()
615 kfree(pdev->resource); in platform_device_add_resources()
616 pdev->resource = r; in platform_device_add_resources()
617 pdev->num_resources = num; in platform_device_add_resources()
623 * platform_device_add_data - add platform-specific data to a platform device
640 return -ENOMEM; in platform_device_add_data()
643 kfree(pdev->dev.platform_data); in platform_device_add_data()
644 pdev->dev.platform_data = d; in platform_device_add_data()
650 * platform_device_add - add a platform device to device hierarchy
662 return -EINVAL; in platform_device_add()
664 if (!pdev->dev.parent) in platform_device_add()
665 pdev->dev.parent = &platform_bus; in platform_device_add()
667 pdev->dev.bus = &platform_bus_type; in platform_device_add()
669 switch (pdev->id) { in platform_device_add()
671 dev_set_name(&pdev->dev, "%s.%d", pdev->name, pdev->id); in platform_device_add()
674 dev_set_name(&pdev->dev, "%s", pdev->name); in platform_device_add()
685 pdev->id = ret; in platform_device_add()
686 pdev->id_auto = true; in platform_device_add()
687 dev_set_name(&pdev->dev, "%s.%d.auto", pdev->name, pdev->id); in platform_device_add()
691 for (i = 0; i < pdev->num_resources; i++) { in platform_device_add()
692 struct resource *p, *r = &pdev->resource[i]; in platform_device_add()
694 if (r->name == NULL) in platform_device_add()
695 r->name = dev_name(&pdev->dev); in platform_device_add()
697 p = r->parent; in platform_device_add()
708 dev_err(&pdev->dev, "failed to claim resource %d: %pR\n", i, r); in platform_device_add()
715 dev_name(&pdev->dev), dev_name(pdev->dev.parent)); in platform_device_add()
717 ret = device_add(&pdev->dev); in platform_device_add()
722 if (pdev->id_auto) { in platform_device_add()
723 ida_free(&platform_devid_ida, pdev->id); in platform_device_add()
724 pdev->id = PLATFORM_DEVID_AUTO; in platform_device_add()
727 while (i--) { in platform_device_add()
728 struct resource *r = &pdev->resource[i]; in platform_device_add()
729 if (r->parent) in platform_device_add()
739 * platform_device_del - remove a platform-level device
742 * Note that this function will also release all memory- and port-based
743 * resources owned by the device (@dev->resource). This function must
751 device_del(&pdev->dev); in platform_device_del()
753 if (pdev->id_auto) { in platform_device_del()
754 ida_free(&platform_devid_ida, pdev->id); in platform_device_del()
755 pdev->id = PLATFORM_DEVID_AUTO; in platform_device_del()
758 for (i = 0; i < pdev->num_resources; i++) { in platform_device_del()
759 struct resource *r = &pdev->resource[i]; in platform_device_del()
760 if (r->parent) in platform_device_del()
768 * platform_device_register - add a platform-level device
777 device_initialize(&pdev->dev); in platform_device_register()
784 * platform_device_unregister - unregister a platform-level device
799 * platform_device_register_full - add a platform-level device with
800 * resources and platform-specific data
812 pdev = platform_device_alloc(pdevinfo->name, pdevinfo->id); in platform_device_register_full()
814 return ERR_PTR(-ENOMEM); in platform_device_register_full()
816 pdev->dev.parent = pdevinfo->parent; in platform_device_register_full()
817 pdev->dev.fwnode = pdevinfo->fwnode; in platform_device_register_full()
818 pdev->dev.of_node = of_node_get(to_of_node(pdev->dev.fwnode)); in platform_device_register_full()
819 pdev->dev.of_node_reused = pdevinfo->of_node_reused; in platform_device_register_full()
821 if (pdevinfo->dma_mask) { in platform_device_register_full()
822 pdev->platform_dma_mask = pdevinfo->dma_mask; in platform_device_register_full()
823 pdev->dev.dma_mask = &pdev->platform_dma_mask; in platform_device_register_full()
824 pdev->dev.coherent_dma_mask = pdevinfo->dma_mask; in platform_device_register_full()
828 pdevinfo->res, pdevinfo->num_res); in platform_device_register_full()
833 pdevinfo->data, pdevinfo->size_data); in platform_device_register_full()
837 if (pdevinfo->properties) { in platform_device_register_full()
838 ret = device_create_managed_software_node(&pdev->dev, in platform_device_register_full()
839 pdevinfo->properties, NULL); in platform_device_register_full()
847 ACPI_COMPANION_SET(&pdev->dev, NULL); in platform_device_register_full()
857 * __platform_driver_register - register a driver for platform-level devices
864 drv->driver.owner = owner; in __platform_driver_register()
865 drv->driver.bus = &platform_bus_type; in __platform_driver_register()
867 return driver_register(&drv->driver); in __platform_driver_register()
872 * platform_driver_unregister - unregister a driver for platform-level devices
877 driver_unregister(&drv->driver); in platform_driver_unregister()
883 return -ENXIO; in platform_probe_fail()
887 * __platform_driver_probe - register driver for non-hotpluggable device
894 * remove its run-once probe() infrastructure from memory after the driver
898 * into system-on-chip processors, where the controller devices have been
911 if (drv->driver.probe_type == PROBE_PREFER_ASYNCHRONOUS) { in __platform_driver_probe()
913 drv->driver.name, __func__); in __platform_driver_probe()
914 return -EINVAL; in __platform_driver_probe()
922 drv->driver.probe_type = PROBE_FORCE_SYNCHRONOUS; in __platform_driver_probe()
928 drv->prevent_deferred_probe = true; in __platform_driver_probe()
931 drv->driver.suppress_bind_attrs = true; in __platform_driver_probe()
934 drv->probe = probe; in __platform_driver_probe()
945 spin_lock(&drv->driver.bus->p->klist_drivers.k_lock); in __platform_driver_probe()
946 drv->probe = platform_probe_fail; in __platform_driver_probe()
947 if (code == 0 && list_empty(&drv->driver.p->klist_devices.k_list)) in __platform_driver_probe()
948 retval = -ENODEV; in __platform_driver_probe()
949 spin_unlock(&drv->driver.bus->p->klist_drivers.k_lock); in __platform_driver_probe()
958 * __platform_create_bundle - register driver and create corresponding device
967 * Use this in legacy-style modules that probe hardware directly and
981 pdev = platform_device_alloc(driver->driver.name, -1); in __platform_create_bundle()
983 error = -ENOMEM; in __platform_create_bundle()
1015 * __platform_register_drivers - register an array of platform drivers
1047 while (i--) { in __platform_register_drivers()
1057 * platform_unregister_drivers - unregister an array of platform drivers
1068 while (count--) { in platform_unregister_drivers()
1079 while (id->name[0]) { in platform_match_id()
1080 if (strcmp(pdev->name, id->name) == 0) { in platform_match_id()
1081 pdev->id_entry = id; in platform_match_id()
1093 struct platform_driver *pdrv = to_platform_driver(dev->driver); in platform_legacy_suspend()
1097 if (dev->driver && pdrv->suspend) in platform_legacy_suspend()
1098 ret = pdrv->suspend(pdev, mesg); in platform_legacy_suspend()
1105 struct platform_driver *pdrv = to_platform_driver(dev->driver); in platform_legacy_resume()
1109 if (dev->driver && pdrv->resume) in platform_legacy_resume()
1110 ret = pdrv->resume(pdev); in platform_legacy_resume()
1121 struct device_driver *drv = dev->driver; in platform_pm_suspend()
1127 if (drv->pm) { in platform_pm_suspend()
1128 if (drv->pm->suspend) in platform_pm_suspend()
1129 ret = drv->pm->suspend(dev); in platform_pm_suspend()
1139 struct device_driver *drv = dev->driver; in platform_pm_resume()
1145 if (drv->pm) { in platform_pm_resume()
1146 if (drv->pm->resume) in platform_pm_resume()
1147 ret = drv->pm->resume(dev); in platform_pm_resume()
1161 struct device_driver *drv = dev->driver; in platform_pm_freeze()
1167 if (drv->pm) { in platform_pm_freeze()
1168 if (drv->pm->freeze) in platform_pm_freeze()
1169 ret = drv->pm->freeze(dev); in platform_pm_freeze()
1179 struct device_driver *drv = dev->driver; in platform_pm_thaw()
1185 if (drv->pm) { in platform_pm_thaw()
1186 if (drv->pm->thaw) in platform_pm_thaw()
1187 ret = drv->pm->thaw(dev); in platform_pm_thaw()
1197 struct device_driver *drv = dev->driver; in platform_pm_poweroff()
1203 if (drv->pm) { in platform_pm_poweroff()
1204 if (drv->pm->poweroff) in platform_pm_poweroff()
1205 ret = drv->pm->poweroff(dev); in platform_pm_poweroff()
1215 struct device_driver *drv = dev->driver; in platform_pm_restore()
1221 if (drv->pm) { in platform_pm_restore()
1222 if (drv->pm->restore) in platform_pm_restore()
1223 ret = drv->pm->restore(dev); in platform_pm_restore()
1233 /* modalias support enables more hands-off userspace setup:
1234 * (a) environment variable lets new-style hotplug events work once system is
1236 * (b) sysfs attribute lets new-style coldplug recover from hotplug events
1246 if (len != -ENODEV) in modalias_show()
1249 len = acpi_device_modalias(dev, buf, PAGE_SIZE - 1); in modalias_show()
1250 if (len != -ENODEV) in modalias_show()
1253 return sysfs_emit(buf, "platform:%s\n", pdev->name); in modalias_show()
1271 len = sysfs_emit(buf, "%s\n", pdev->driver_override); in driver_override_show()
1284 ret = driver_set_override(dev, &pdev->driver_override, buf, count); in driver_override_store()
1308 return a->mode; in platform_dev_attrs_visible()
1319 * platform_match - bind platform device to platform driver.
1337 if (pdev->driver_override) in platform_match()
1338 return !strcmp(pdev->driver_override, drv->name); in platform_match()
1349 if (pdrv->id_table) in platform_match()
1350 return platform_match_id(pdrv->id_table, pdev) != NULL; in platform_match()
1352 /* fall-back to driver name match */ in platform_match()
1353 return (strcmp(pdev->name, drv->name) == 0); in platform_match()
1361 /* Some devices have extra OF data and an OF-style MODALIAS */ in platform_uevent()
1363 if (rc != -ENODEV) in platform_uevent()
1367 if (rc != -ENODEV) in platform_uevent()
1371 pdev->name); in platform_uevent()
1377 struct platform_driver *drv = to_platform_driver(_dev->driver); in platform_probe()
1388 if (unlikely(drv->probe == platform_probe_fail)) in platform_probe()
1389 return -ENXIO; in platform_probe()
1391 ret = of_clk_set_defaults(_dev->of_node, false); in platform_probe()
1399 if (drv->probe) { in platform_probe()
1400 ret = drv->probe(dev); in platform_probe()
1406 if (drv->prevent_deferred_probe && ret == -EPROBE_DEFER) { in platform_probe()
1408 ret = -ENXIO; in platform_probe()
1416 struct platform_driver *drv = to_platform_driver(_dev->driver); in platform_remove()
1419 if (drv->remove) { in platform_remove()
1420 int ret = drv->remove(dev); in platform_remove()
1423 dev_warn(_dev, "remove callback returned a non-zero value. This will be ignored.\n"); in platform_remove()
1433 if (!_dev->driver) in platform_shutdown()
1436 drv = to_platform_driver(_dev->driver); in platform_shutdown()
1437 if (drv->shutdown) in platform_shutdown()
1438 drv->shutdown(dev); in platform_shutdown()
1443 struct platform_driver *drv = to_platform_driver(dev->driver); in platform_dma_configure()
1447 if (dev->of_node) { in platform_dma_configure()
1448 ret = of_dma_configure(dev, dev->of_node, true); in platform_dma_configure()
1450 attr = acpi_get_dma_attr(to_acpi_device_node(dev->fwnode)); in platform_dma_configure()
1454 if (!ret && !drv->driver_managed_dma) { in platform_dma_configure()
1465 struct platform_driver *drv = to_platform_driver(dev->driver); in platform_dma_cleanup()
1467 if (!drv->driver_managed_dma) in platform_dma_cleanup()
1496 * platform_find_device_by_driver - Find a platform device with a given