[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / net / wireless / b43 / sysfs.c

/*

  Broadcom B43 wireless driver

  SYSFS support routines

  Copyright (c) 2006 Michael Buesch <m@bues.ch>

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  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.

  You should have received a copy of the GNU General Public License
  along with this program; see the file COPYING.  If not, write to
  the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
  Boston, MA 02110-1301, USA.

*/

#include <linux/capability.h>
#include <linux/io.h>

#include "b43.h"
#include "sysfs.h"
#include "main.h"
#include "phy_common.h"

#define GENERIC_FILESIZE	64

static int get_integer(const char *buf, size_t count)
{
	char tmp[10 + 1] = { 0 };
	int ret = -EINVAL;

	if (count == 0)
		goto out;
	count = min(count, (size_t) 10);
	memcpy(tmp, buf, count);
	ret = simple_strtol(tmp, NULL, 10);
      out:
	return ret;
}

static ssize_t b43_attr_interfmode_show(struct device *dev,
					struct device_attribute *attr,
					char *buf)
{
	struct b43_wldev *wldev = dev_to_b43_wldev(dev);
	ssize_t count = 0;

	if (!capable(CAP_NET_ADMIN))
		return -EPERM;

	mutex_lock(&wldev->wl->mutex);

	if (wldev->phy.type != B43_PHYTYPE_G) {
		mutex_unlock(&wldev->wl->mutex);
		return -ENOSYS;
	}

	switch (wldev->phy.g->interfmode) {
	case B43_INTERFMODE_NONE:
		count =
		    snprintf(buf, PAGE_SIZE,
			     "0 (No Interference Mitigation)\n");
		break;
	case B43_INTERFMODE_NONWLAN:
		count =
		    snprintf(buf, PAGE_SIZE,
			     "1 (Non-WLAN Interference Mitigation)\n");
		break;
	case B43_INTERFMODE_MANUALWLAN:
		count =
		    snprintf(buf, PAGE_SIZE,
			     "2 (WLAN Interference Mitigation)\n");
		break;
	default:
		B43_WARN_ON(1);
	}

	mutex_unlock(&wldev->wl->mutex);

	return count;
}

static ssize_t b43_attr_interfmode_store(struct device *dev,
					 struct device_attribute *attr,
					 const char *buf, size_t count)
{
	struct b43_wldev *wldev = dev_to_b43_wldev(dev);
	int err;
	int mode;

	if (!capable(CAP_NET_ADMIN))
		return -EPERM;

	mode = get_integer(buf, count);
	switch (mode) {
	case 0:
		mode = B43_INTERFMODE_NONE;
		break;
	case 1:
		mode = B43_INTERFMODE_NONWLAN;
		break;
	case 2:
		mode = B43_INTERFMODE_MANUALWLAN;
		break;
	case 3:
		mode = B43_INTERFMODE_AUTOWLAN;
		break;
	default:
		return -EINVAL;
	}

	mutex_lock(&wldev->wl->mutex);

	if (wldev->phy.ops->interf_mitigation) {
		err = wldev->phy.ops->interf_mitigation(wldev, mode);
		if (err) {
			b43err(wldev->wl, "Interference Mitigation not "
			       "supported by device\n");
		}
	} else
		err = -ENOSYS;

	mmiowb();
	mutex_unlock(&wldev->wl->mutex);

	return err ? err : count;
}

static DEVICE_ATTR(interference, 0644,
		   b43_attr_interfmode_show, b43_attr_interfmode_store);

int b43_sysfs_register(struct b43_wldev *wldev)
{
	struct device *dev = wldev->sdev->dev;

	B43_WARN_ON(b43_status(wldev) != B43_STAT_INITIALIZED);

	return device_create_file(dev, &dev_attr_interference);
}

void b43_sysfs_unregister(struct b43_wldev *wldev)
{
	struct device *dev = wldev->sdev->dev;

	device_remove_file(dev, &dev_attr_interference);
}
Commit	Line	Data
e4d6b795 MB	1	/*
	2
	3	Broadcom B43 wireless driver
	4
	5	SYSFS support routines
	6
eb032b98	7	Copyright (c) 2006 Michael Buesch <m@bues.ch>
e4d6b795 MB	8
	9	This program is free software; you can redistribute it and/or modify
	10	it under the terms of the GNU General Public License as published by
	11	the Free Software Foundation; either version 2 of the License, or
	12	(at your option) any later version.
	13
	14	This program is distributed in the hope that it will be useful,
	15	but WITHOUT ANY WARRANTY; without even the implied warranty of
	16	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	17	GNU General Public License for more details.
	18
	19	You should have received a copy of the GNU General Public License
	20	along with this program; see the file COPYING. If not, write to
	21	the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
	22	Boston, MA 02110-1301, USA.
	23
	24	*/
	25
50e36ebe GU	26	#include <linux/capability.h>
	27	#include <linux/io.h>
	28
e4d6b795 MB	29	#include "b43.h"
	30	#include "sysfs.h"
	31	#include "main.h"
ef1a628d	32	#include "phy_common.h"
e4d6b795	33
e4d6b795 MB	34	#define GENERIC_FILESIZE 64
	35
	36	static int get_integer(const char *buf, size_t count)
	37	{
	38	char tmp[10 + 1] = { 0 };
	39	int ret = -EINVAL;
	40
	41	if (count == 0)
	42	goto out;
	43	count = min(count, (size_t) 10);
	44	memcpy(tmp, buf, count);
	45	ret = simple_strtol(tmp, NULL, 10);
	46	out:
	47	return ret;
	48	}
	49
e4d6b795 MB	50	static ssize_t b43_attr_interfmode_show(struct device *dev,
	51	struct device_attribute *attr,
	52	char *buf)
	53	{
	54	struct b43_wldev *wldev = dev_to_b43_wldev(dev);
	55	ssize_t count = 0;
	56
	57	if (!capable(CAP_NET_ADMIN))
	58	return -EPERM;
	59
	60	mutex_lock(&wldev->wl->mutex);
	61
ef1a628d MB	62	if (wldev->phy.type != B43_PHYTYPE_G) {
	63	mutex_unlock(&wldev->wl->mutex);
	64	return -ENOSYS;
	65	}
	66
	67	switch (wldev->phy.g->interfmode) {
e4d6b795 MB	68	case B43_INTERFMODE_NONE:
	69	count =
	70	snprintf(buf, PAGE_SIZE,
	71	"0 (No Interference Mitigation)\n");
	72	break;
	73	case B43_INTERFMODE_NONWLAN:
	74	count =
	75	snprintf(buf, PAGE_SIZE,
	76	"1 (Non-WLAN Interference Mitigation)\n");
	77	break;
	78	case B43_INTERFMODE_MANUALWLAN:
	79	count =
	80	snprintf(buf, PAGE_SIZE,
	81	"2 (WLAN Interference Mitigation)\n");
	82	break;
	83	default:
	84	B43_WARN_ON(1);
	85	}
	86
	87	mutex_unlock(&wldev->wl->mutex);
	88
	89	return count;
	90	}
	91
	92	static ssize_t b43_attr_interfmode_store(struct device *dev,
	93	struct device_attribute *attr,
	94	const char *buf, size_t count)
	95	{
	96	struct b43_wldev *wldev = dev_to_b43_wldev(dev);
e4d6b795 MB	97	int err;
	98	int mode;
	99
	100	if (!capable(CAP_NET_ADMIN))
	101	return -EPERM;
	102
	103	mode = get_integer(buf, count);
	104	switch (mode) {
	105	case 0:
	106	mode = B43_INTERFMODE_NONE;
	107	break;
	108	case 1:
	109	mode = B43_INTERFMODE_NONWLAN;
	110	break;
	111	case 2:
	112	mode = B43_INTERFMODE_MANUALWLAN;
	113	break;
	114	case 3:
	115	mode = B43_INTERFMODE_AUTOWLAN;
	116	break;
	117	default:
	118	return -EINVAL;
	119	}
	120
	121	mutex_lock(&wldev->wl->mutex);
e4d6b795	122
ef1a628d MB	123	if (wldev->phy.ops->interf_mitigation) {
	124	err = wldev->phy.ops->interf_mitigation(wldev, mode);
	125	if (err) {
	126	b43err(wldev->wl, "Interference Mitigation not "
	127	"supported by device\n");
	128	}
	129	} else
	130	err = -ENOSYS;
	131
e4d6b795	132	mmiowb();
e4d6b795 MB	133	mutex_unlock(&wldev->wl->mutex);
	134
	135	return err ? err : count;
	136	}
	137
	138	static DEVICE_ATTR(interference, 0644,
	139	b43_attr_interfmode_show, b43_attr_interfmode_store);
	140
e4d6b795 MB	141	int b43_sysfs_register(struct b43_wldev *wldev)
e4d6b795 MB	142	{
dedb1eb9	143	struct device *dev = wldev->sdev->dev;
e4d6b795 MB	144
	145	B43_WARN_ON(b43_status(wldev) != B43_STAT_INITIALIZED);
	146
8318d78a	147	return device_create_file(dev, &dev_attr_interference);
e4d6b795 MB	148	}
	149
	150	void b43_sysfs_unregister(struct b43_wldev *wldev)
	151	{
dedb1eb9	152	struct device *dev = wldev->sdev->dev;
e4d6b795	153
e4d6b795 MB	154	device_remove_file(dev, &dev_attr_interference);
e4d6b795 MB	155	}