1 // SPDX-License-Identifier: GPL-2.0
29 	guard(mutex)(&auxdev->sysfs.lock);  in auxiliary_irq_dir_prepare()
30 	if (auxdev->sysfs.irq_dir_exists)  in auxiliary_irq_dir_prepare()
33 	ret = devm_device_add_group(&auxdev->dev, &auxiliary_irqs_group);  in auxiliary_irq_dir_prepare()
37 	auxdev->sysfs.irq_dir_exists = true;  in auxiliary_irq_dir_prepare()
38 	xa_init(&auxdev->sysfs.irqs);  in auxiliary_irq_dir_prepare()
43  * auxiliary_device_sysfs_irq_add - add a sysfs entry for the given IRQ
44  * @auxdev: auxiliary bus device to add the sysfs entry.
45  * @irq: The associated interrupt number.
47  * This function should be called after auxiliary device have successfully
48  * received the irq.
49  * The driver is responsible to add a unique irq for the auxiliary device. The
52  * multiple times if the irq is already added previously.
56 int auxiliary_device_sysfs_irq_add(struct auxiliary_device *auxdev, int irq)  in auxiliary_device_sysfs_irq_add()  argument
59 	struct device *dev = &auxdev->dev;  in auxiliary_device_sysfs_irq_add()
68 		return -ENOMEM;  in auxiliary_device_sysfs_irq_add()
70 	sysfs_attr_init(&info->sysfs_attr.attr);  in auxiliary_device_sysfs_irq_add()
71 	snprintf(info->name, AUXILIARY_MAX_IRQ_NAME, "%d", irq);  in auxiliary_device_sysfs_irq_add()
73 	ret = xa_insert(&auxdev->sysfs.irqs, irq, info, GFP_KERNEL);  in auxiliary_device_sysfs_irq_add()
77 	info->sysfs_attr.attr.name = info->name;  in auxiliary_device_sysfs_irq_add()
78 	ret = sysfs_add_file_to_group(&dev->kobj, &info->sysfs_attr.attr,  in auxiliary_device_sysfs_irq_add()
83 	xa_store(&auxdev->sysfs.irqs, irq, no_free_ptr(info), GFP_KERNEL);  in auxiliary_device_sysfs_irq_add()
87 	xa_erase(&auxdev->sysfs.irqs, irq);  in auxiliary_device_sysfs_irq_add()
93  * auxiliary_device_sysfs_irq_remove - remove a sysfs entry for the given IRQ
94  * @auxdev: auxiliary bus device to add the sysfs entry.
95  * @irq: the IRQ to remove.
97  * This function should be called to remove an IRQ sysfs entry.
98  * The driver must invoke this API when IRQ is released by the device.
100 void auxiliary_device_sysfs_irq_remove(struct auxiliary_device *auxdev, int irq)  in auxiliary_device_sysfs_irq_remove()  argument
102 	struct auxiliary_irq_info *info __free(kfree) = xa_load(&auxdev->sysfs.irqs, irq);  in auxiliary_device_sysfs_irq_remove()
103 	struct device *dev = &auxdev->dev;  in auxiliary_device_sysfs_irq_remove()
106 		dev_err(&auxdev->dev, "IRQ %d doesn't exist\n", irq);  in auxiliary_device_sysfs_irq_remove()
109 	sysfs_remove_file_from_group(&dev->kobj, &info->sysfs_attr.attr,  in auxiliary_device_sysfs_irq_remove()
111 	xa_erase(&auxdev->sysfs.irqs, irq);  in auxiliary_device_sysfs_irq_remove()