mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-22 12:14:01 +08:00
ff4e65581e
This patch removes the default channel setting. A channel is always set and there is no default channel setting according 802.15.4. Drivers should set the default channel and page in probing routine. This behaviour is currently a lack of all 802.15.4 drivers. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
159 lines
3.1 KiB
C
159 lines
3.1 KiB
C
/*
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* Copyright (C) 2007, 2008, 2009 Siemens AG
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/slab.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/device.h>
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#include <net/cfg802154.h>
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#include "ieee802154.h"
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#include "sysfs.h"
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static DEFINE_MUTEX(wpan_phy_mutex);
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static int wpan_phy_idx;
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static int wpan_phy_match(struct device *dev, const void *data)
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{
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return !strcmp(dev_name(dev), (const char *)data);
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}
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struct wpan_phy *wpan_phy_find(const char *str)
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{
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struct device *dev;
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if (WARN_ON(!str))
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return NULL;
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dev = class_find_device(&wpan_phy_class, NULL, str, wpan_phy_match);
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if (!dev)
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return NULL;
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return container_of(dev, struct wpan_phy, dev);
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}
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EXPORT_SYMBOL(wpan_phy_find);
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struct wpan_phy_iter_data {
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int (*fn)(struct wpan_phy *phy, void *data);
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void *data;
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};
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static int wpan_phy_iter(struct device *dev, void *_data)
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{
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struct wpan_phy_iter_data *wpid = _data;
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struct wpan_phy *phy = container_of(dev, struct wpan_phy, dev);
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return wpid->fn(phy, wpid->data);
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}
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int wpan_phy_for_each(int (*fn)(struct wpan_phy *phy, void *data),
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void *data)
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{
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struct wpan_phy_iter_data wpid = {
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.fn = fn,
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.data = data,
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};
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return class_for_each_device(&wpan_phy_class, NULL,
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&wpid, wpan_phy_iter);
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}
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EXPORT_SYMBOL(wpan_phy_for_each);
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static int wpan_phy_idx_valid(int idx)
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{
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return idx >= 0;
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}
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struct wpan_phy *wpan_phy_alloc(size_t priv_size)
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{
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struct wpan_phy *phy = kzalloc(sizeof(*phy) + priv_size,
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GFP_KERNEL);
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if (!phy)
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goto out;
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mutex_lock(&wpan_phy_mutex);
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phy->idx = wpan_phy_idx++;
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if (unlikely(!wpan_phy_idx_valid(phy->idx))) {
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wpan_phy_idx--;
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mutex_unlock(&wpan_phy_mutex);
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kfree(phy);
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goto out;
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}
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mutex_unlock(&wpan_phy_mutex);
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mutex_init(&phy->pib_lock);
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device_initialize(&phy->dev);
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dev_set_name(&phy->dev, "wpan-phy%d", phy->idx);
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phy->dev.class = &wpan_phy_class;
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return phy;
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out:
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return NULL;
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}
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EXPORT_SYMBOL(wpan_phy_alloc);
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int wpan_phy_register(struct wpan_phy *phy)
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{
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return device_add(&phy->dev);
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}
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EXPORT_SYMBOL(wpan_phy_register);
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void wpan_phy_unregister(struct wpan_phy *phy)
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{
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device_del(&phy->dev);
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}
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EXPORT_SYMBOL(wpan_phy_unregister);
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void wpan_phy_free(struct wpan_phy *phy)
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{
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put_device(&phy->dev);
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}
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EXPORT_SYMBOL(wpan_phy_free);
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static int __init wpan_phy_class_init(void)
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{
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int rc;
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rc = wpan_phy_sysfs_init();
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if (rc)
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goto err;
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rc = ieee802154_nl_init();
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if (rc)
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goto err_nl;
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return 0;
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err_nl:
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wpan_phy_sysfs_exit();
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err:
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return rc;
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}
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subsys_initcall(wpan_phy_class_init);
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static void __exit wpan_phy_class_exit(void)
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{
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ieee802154_nl_exit();
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wpan_phy_sysfs_exit();
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}
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module_exit(wpan_phy_class_exit);
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MODULE_LICENSE("GPL v2");
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MODULE_DESCRIPTION("IEEE 802.15.4 configuration interface");
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MODULE_AUTHOR("Dmitry Eremin-Solenikov");
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