e23e9ec16b
This patch moves the sysfs handling in a own file. This is like wireless sysfs file handling. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
94 lines
2.4 KiB
C
94 lines
2.4 KiB
C
/* 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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* Authors:
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* Alexander Aring <aar@pengutronix.de>
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*
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* Based on: net/wireless/sysfs.c
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*/
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#include <linux/device.h>
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#include <net/cfg802154.h>
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#define MASTER_SHOW_COMPLEX(name, format_string, args...) \
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static ssize_t name ## _show(struct device *dev, \
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struct device_attribute *attr, char *buf) \
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{ \
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struct wpan_phy *phy = container_of(dev, struct wpan_phy, dev); \
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int ret; \
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\
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mutex_lock(&phy->pib_lock); \
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ret = snprintf(buf, PAGE_SIZE, format_string "\n", args); \
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mutex_unlock(&phy->pib_lock); \
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return ret; \
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} \
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static DEVICE_ATTR_RO(name)
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#define MASTER_SHOW(field, format_string) \
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MASTER_SHOW_COMPLEX(field, format_string, phy->field)
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MASTER_SHOW(current_channel, "%d");
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MASTER_SHOW(current_page, "%d");
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MASTER_SHOW(transmit_power, "%d +- 1 dB");
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MASTER_SHOW(cca_mode, "%d");
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static ssize_t channels_supported_show(struct device *dev,
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struct device_attribute *attr,
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char *buf)
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{
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struct wpan_phy *phy = container_of(dev, struct wpan_phy, dev);
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int ret;
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int i, len = 0;
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mutex_lock(&phy->pib_lock);
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for (i = 0; i < 32; i++) {
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ret = snprintf(buf + len, PAGE_SIZE - len,
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"%#09x\n", phy->channels_supported[i]);
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if (ret < 0)
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break;
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len += ret;
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}
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mutex_unlock(&phy->pib_lock);
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return len;
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}
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static DEVICE_ATTR_RO(channels_supported);
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static void wpan_phy_release(struct device *d)
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{
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struct wpan_phy *phy = container_of(d, struct wpan_phy, dev);
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kfree(phy);
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}
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static struct attribute *pmib_attrs[] = {
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&dev_attr_current_channel.attr,
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&dev_attr_current_page.attr,
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&dev_attr_channels_supported.attr,
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&dev_attr_transmit_power.attr,
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&dev_attr_cca_mode.attr,
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NULL,
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};
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ATTRIBUTE_GROUPS(pmib);
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struct class wpan_phy_class = {
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.name = "ieee802154",
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.dev_release = wpan_phy_release,
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.dev_groups = pmib_groups,
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};
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int wpan_phy_sysfs_init(void)
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{
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return class_register(&wpan_phy_class);
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}
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void wpan_phy_sysfs_exit(void)
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{
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class_unregister(&wpan_phy_class);
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}
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