linux/drivers/pnp/core.c

// SPDX-License-Identifier: GPL-2.0
/*
 * core.c - contains all core device and protocol registration functions
 *
 * Copyright 2002 Adam Belay <[email protected]>
 */

#include <linux/pnp.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/dma-mapping.h>

#include "base.h"

static LIST_HEAD(pnp_protocols);
LIST_HEAD(…);
DEFINE_MUTEX(…) …;

/*
 * ACPI or PNPBIOS should tell us about all platform devices, so we can
 * skip some blind probes.  ISAPNP typically enumerates only plug-in ISA
 * devices, not built-in things like COM ports.
 */
int pnp_platform_devices;
EXPORT_SYMBOL(…);

static void pnp_remove_protocol(struct pnp_protocol *protocol)
{ … }

/**
 * pnp_register_protocol - adds a pnp protocol to the pnp layer
 * @protocol: pointer to the corresponding pnp_protocol structure
 *
 *  Ex protocols: ISAPNP, PNPBIOS, etc
 */
int pnp_register_protocol(struct pnp_protocol *protocol)
{ … }

/**
 * pnp_unregister_protocol - removes a pnp protocol from the pnp layer
 * @protocol: pointer to the corresponding pnp_protocol structure
 */
void pnp_unregister_protocol(struct pnp_protocol *protocol)
{ … }

static void pnp_free_ids(struct pnp_dev *dev)
{ … }

void pnp_free_resource(struct pnp_resource *pnp_res)
{ … }

void pnp_free_resources(struct pnp_dev *dev)
{ … }

static void pnp_release_device(struct device *dmdev)
{ … }

struct pnp_dev *pnp_alloc_dev(struct pnp_protocol *protocol, int id,
			      const char *pnpid)
{ … }

static void pnp_delist_device(struct pnp_dev *dev)
{ … }

int __pnp_add_device(struct pnp_dev *dev)
{ … }

/*
 * pnp_add_device - adds a pnp device to the pnp layer
 * @dev: pointer to dev to add
 *
 *  adds to driver model, name database, fixups, interface, etc.
 */
int pnp_add_device(struct pnp_dev *dev)
{ … }

void __pnp_remove_device(struct pnp_dev *dev)
{ … }

static int __init pnp_init(void)
{ … }

subsys_initcall(pnp_init);

int pnp_debug;

#if defined(CONFIG_PNP_DEBUG_MESSAGES)
module_param_named(debug, pnp_debug, int, 0644);
#endif