linux/drivers/base/auxiliary_sysfs.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2024, NVIDIA CORPORATION & AFFILIATES
 */

#include <linux/auxiliary_bus.h>
#include <linux/slab.h>

#define AUXILIARY_MAX_IRQ_NAME …

struct auxiliary_irq_info { … };

static struct attribute *auxiliary_irq_attrs[] = …;

static const struct attribute_group auxiliary_irqs_group = …;

static int auxiliary_irq_dir_prepare(struct auxiliary_device *auxdev)
{ … }

/**
 * auxiliary_device_sysfs_irq_add - add a sysfs entry for the given IRQ
 * @auxdev: auxiliary bus device to add the sysfs entry.
 * @irq: The associated interrupt number.
 *
 * This function should be called after auxiliary device have successfully
 * received the irq.
 * The driver is responsible to add a unique irq for the auxiliary device. The
 * driver can invoke this function from multiple thread context safely for
 * unique irqs of the auxiliary devices. The driver must not invoke this API
 * multiple times if the irq is already added previously.
 *
 * Return: zero on success or an error code on failure.
 */
int auxiliary_device_sysfs_irq_add(struct auxiliary_device *auxdev, int irq)
{ … }
EXPORT_SYMBOL_GPL(…);

/**
 * auxiliary_device_sysfs_irq_remove - remove a sysfs entry for the given IRQ
 * @auxdev: auxiliary bus device to add the sysfs entry.
 * @irq: the IRQ to remove.
 *
 * This function should be called to remove an IRQ sysfs entry.
 * The driver must invoke this API when IRQ is released by the device.
 */
void auxiliary_device_sysfs_irq_remove(struct auxiliary_device *auxdev, int irq)
{ … }
EXPORT_SYMBOL_GPL(…);