[linux-2.6-block.git] / net / ieee802154 / sysfs.c

/* This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * Authors:
 * Alexander Aring <aar@pengutronix.de>
 *
 * Based on: net/wireless/sysfs.c
 */

#include <linux/device.h>

#include <net/cfg802154.h>

#include "core.h"
#include "sysfs.h"

static inline struct cfg802154_registered_device *
dev_to_rdev(struct device *dev)
{
	return container_of(dev, struct cfg802154_registered_device,
			    wpan_phy.dev);
}

#define MASTER_SHOW_COMPLEX(name, format_string, args...)		\
static ssize_t name ## _show(struct device *dev,			\
			    struct device_attribute *attr, char *buf)	\
{									\
	struct wpan_phy *phy = container_of(dev, struct wpan_phy, dev);	\
	int ret;							\
									\
	mutex_lock(&phy->pib_lock);					\
	ret = snprintf(buf, PAGE_SIZE, format_string "\n", args);	\
	mutex_unlock(&phy->pib_lock);					\
	return ret;							\
}									\
static DEVICE_ATTR_RO(name)

#define MASTER_SHOW(field, format_string)				\
	MASTER_SHOW_COMPLEX(field, format_string, phy->field)

MASTER_SHOW(current_channel, "%d");
MASTER_SHOW(current_page, "%d");
MASTER_SHOW(transmit_power, "%d +- 1 dB");
MASTER_SHOW(cca_mode, "%d");

static ssize_t channels_supported_show(struct device *dev,
				       struct device_attribute *attr,
				       char *buf)
{
	struct wpan_phy *phy = container_of(dev, struct wpan_phy, dev);
	int ret;
	int i, len = 0;

	mutex_lock(&phy->pib_lock);
	for (i = 0; i < 32; i++) {
		ret = snprintf(buf + len, PAGE_SIZE - len,
			       "%#09x\n", phy->channels_supported[i]);
		if (ret < 0)
			break;
		len += ret;
	}
	mutex_unlock(&phy->pib_lock);
	return len;
}
static DEVICE_ATTR_RO(channels_supported);

static void wpan_phy_release(struct device *dev)
{
	struct cfg802154_registered_device *rdev = dev_to_rdev(dev);

	cfg802154_dev_free(rdev);
}

static struct attribute *pmib_attrs[] = {
	&dev_attr_current_channel.attr,
	&dev_attr_current_page.attr,
	&dev_attr_channels_supported.attr,
	&dev_attr_transmit_power.attr,
	&dev_attr_cca_mode.attr,
	NULL,
};
ATTRIBUTE_GROUPS(pmib);

struct class wpan_phy_class = {
	.name = "ieee802154",
	.dev_release = wpan_phy_release,
	.dev_groups = pmib_groups,
};

int wpan_phy_sysfs_init(void)
{
	return class_register(&wpan_phy_class);
}

void wpan_phy_sysfs_exit(void)
{
	class_unregister(&wpan_phy_class);
}
Commit	Line	Data
e23e9ec1 AA	1	/* This program is free software; you can redistribute it and/or modify
	2	* it under the terms of the GNU General Public License version 2
	3	* as published by the Free Software Foundation.
	4	*
	5	* This program is distributed in the hope that it will be useful,
	6	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	7	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	8	* GNU General Public License for more details.
	9	*
	10	* Authors:
	11	* Alexander Aring <aar@pengutronix.de>
	12	*
	13	* Based on: net/wireless/sysfs.c
	14	*/
	15
	16	#include <linux/device.h>
	17
	18	#include <net/cfg802154.h>
	19
a5dd1d72	20	#include "core.h"
c5fbbc46	21	#include "sysfs.h"
a5dd1d72 AA	22
	23	static inline struct cfg802154_registered_device *
	24	dev_to_rdev(struct device *dev)
	25	{
	26	return container_of(dev, struct cfg802154_registered_device,
	27	wpan_phy.dev);
	28	}
	29
e23e9ec1 AA	30	#define MASTER_SHOW_COMPLEX(name, format_string, args...) \
	31	static ssize_t name ## _show(struct device *dev, \
	32	struct device_attribute attr, char buf) \
	33	{ \
	34	struct wpan_phy *phy = container_of(dev, struct wpan_phy, dev); \
	35	int ret; \
	36	\
	37	mutex_lock(&phy->pib_lock); \
	38	ret = snprintf(buf, PAGE_SIZE, format_string "\n", args); \
	39	mutex_unlock(&phy->pib_lock); \
	40	return ret; \
	41	} \
	42	static DEVICE_ATTR_RO(name)
	43
	44	#define MASTER_SHOW(field, format_string) \
	45	MASTER_SHOW_COMPLEX(field, format_string, phy->field)
	46
	47	MASTER_SHOW(current_channel, "%d");
	48	MASTER_SHOW(current_page, "%d");
	49	MASTER_SHOW(transmit_power, "%d +- 1 dB");
	50	MASTER_SHOW(cca_mode, "%d");
	51
	52	static ssize_t channels_supported_show(struct device *dev,
	53	struct device_attribute *attr,
	54	char *buf)
	55	{
	56	struct wpan_phy *phy = container_of(dev, struct wpan_phy, dev);
	57	int ret;
	58	int i, len = 0;
	59
	60	mutex_lock(&phy->pib_lock);
	61	for (i = 0; i < 32; i++) {
	62	ret = snprintf(buf + len, PAGE_SIZE - len,
	63	"%#09x\n", phy->channels_supported[i]);
	64	if (ret < 0)
	65	break;
	66	len += ret;
	67	}
	68	mutex_unlock(&phy->pib_lock);
	69	return len;
	70	}
	71	static DEVICE_ATTR_RO(channels_supported);
	72
a5dd1d72	73	static void wpan_phy_release(struct device *dev)
e23e9ec1	74	{
a5dd1d72	75	struct cfg802154_registered_device *rdev = dev_to_rdev(dev);
e23e9ec1	76
a5dd1d72	77	cfg802154_dev_free(rdev);
e23e9ec1 AA	78	}
	79
	80	static struct attribute *pmib_attrs[] = {
	81	&dev_attr_current_channel.attr,
	82	&dev_attr_current_page.attr,
	83	&dev_attr_channels_supported.attr,
	84	&dev_attr_transmit_power.attr,
	85	&dev_attr_cca_mode.attr,
	86	NULL,
	87	};
	88	ATTRIBUTE_GROUPS(pmib);
	89
	90	struct class wpan_phy_class = {
	91	.name = "ieee802154",
	92	.dev_release = wpan_phy_release,
	93	.dev_groups = pmib_groups,
	94	};
	95
	96	int wpan_phy_sysfs_init(void)
	97	{
	98	return class_register(&wpan_phy_class);
	99	}
	100
	101	void wpan_phy_sysfs_exit(void)
	102	{
	103	class_unregister(&wpan_phy_class);
	104	}