mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-30 08:04:13 +08:00
0b992080a9
The module.h (via device.h) was pulling handfuls of implicitly present header files -- including basic stuff like stat.h. Fix up these stat.h users in advance so they don't break on the cleanup. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
136 lines
4.1 KiB
C
136 lines
4.1 KiB
C
/*
|
|
* Ultra Wide Band
|
|
* Scanning management
|
|
*
|
|
* Copyright (C) 2005-2006 Intel Corporation
|
|
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
|
|
*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301, USA.
|
|
*
|
|
*
|
|
*
|
|
* FIXME: docs
|
|
* FIXME: there are issues here on how BEACON and SCAN on USB RCI deal
|
|
* with each other. Currently seems that START_BEACON while
|
|
* SCAN_ONLY will cancel the scan, so we need to update the
|
|
* state here. Clarification request sent by email on
|
|
* 10/05/2005.
|
|
* 10/28/2005 No clear answer heard--maybe we'll hack the API
|
|
* so that when we start beaconing, if the HC is
|
|
* scanning in a mode not compatible with beaconing
|
|
* we just fail.
|
|
*/
|
|
|
|
#include <linux/device.h>
|
|
#include <linux/err.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/stat.h>
|
|
#include "uwb-internal.h"
|
|
|
|
|
|
/**
|
|
* Start/stop scanning in a radio controller
|
|
*
|
|
* @rc: UWB Radio Controller
|
|
* @channel: Channel to scan; encodings in WUSB1.0[Table 5.12]
|
|
* @type: Type of scanning to do.
|
|
* @bpst_offset: value at which to start scanning (if type ==
|
|
* UWB_SCAN_ONLY_STARTTIME)
|
|
* @returns: 0 if ok, < 0 errno code on error
|
|
*
|
|
* We put the command on kmalloc'ed memory as some arches cannot do
|
|
* USB from the stack. The reply event is copied from an stage buffer,
|
|
* so it can be in the stack. See WUSB1.0[8.6.2.4] for more details.
|
|
*/
|
|
int uwb_rc_scan(struct uwb_rc *rc,
|
|
unsigned channel, enum uwb_scan_type type,
|
|
unsigned bpst_offset)
|
|
{
|
|
int result;
|
|
struct uwb_rc_cmd_scan *cmd;
|
|
struct uwb_rc_evt_confirm reply;
|
|
|
|
result = -ENOMEM;
|
|
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
|
|
if (cmd == NULL)
|
|
goto error_kzalloc;
|
|
mutex_lock(&rc->uwb_dev.mutex);
|
|
cmd->rccb.bCommandType = UWB_RC_CET_GENERAL;
|
|
cmd->rccb.wCommand = cpu_to_le16(UWB_RC_CMD_SCAN);
|
|
cmd->bChannelNumber = channel;
|
|
cmd->bScanState = type;
|
|
cmd->wStartTime = cpu_to_le16(bpst_offset);
|
|
reply.rceb.bEventType = UWB_RC_CET_GENERAL;
|
|
reply.rceb.wEvent = UWB_RC_CMD_SCAN;
|
|
result = uwb_rc_cmd(rc, "SCAN", &cmd->rccb, sizeof(*cmd),
|
|
&reply.rceb, sizeof(reply));
|
|
if (result < 0)
|
|
goto error_cmd;
|
|
if (reply.bResultCode != UWB_RC_RES_SUCCESS) {
|
|
dev_err(&rc->uwb_dev.dev,
|
|
"SCAN: command execution failed: %s (%d)\n",
|
|
uwb_rc_strerror(reply.bResultCode), reply.bResultCode);
|
|
result = -EIO;
|
|
goto error_cmd;
|
|
}
|
|
rc->scanning = channel;
|
|
rc->scan_type = type;
|
|
error_cmd:
|
|
mutex_unlock(&rc->uwb_dev.mutex);
|
|
kfree(cmd);
|
|
error_kzalloc:
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Print scanning state
|
|
*/
|
|
static ssize_t uwb_rc_scan_show(struct device *dev,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct uwb_dev *uwb_dev = to_uwb_dev(dev);
|
|
struct uwb_rc *rc = uwb_dev->rc;
|
|
ssize_t result;
|
|
|
|
mutex_lock(&rc->uwb_dev.mutex);
|
|
result = sprintf(buf, "%d %d\n", rc->scanning, rc->scan_type);
|
|
mutex_unlock(&rc->uwb_dev.mutex);
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
*
|
|
*/
|
|
static ssize_t uwb_rc_scan_store(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t size)
|
|
{
|
|
struct uwb_dev *uwb_dev = to_uwb_dev(dev);
|
|
struct uwb_rc *rc = uwb_dev->rc;
|
|
unsigned channel;
|
|
unsigned type;
|
|
unsigned bpst_offset = 0;
|
|
ssize_t result = -EINVAL;
|
|
|
|
result = sscanf(buf, "%u %u %u\n", &channel, &type, &bpst_offset);
|
|
if (result >= 2 && type < UWB_SCAN_TOP)
|
|
result = uwb_rc_scan(rc, channel, type, bpst_offset);
|
|
|
|
return result < 0 ? result : size;
|
|
}
|
|
|
|
/** Radio Control sysfs interface (declaration) */
|
|
DEVICE_ATTR(scan, S_IRUGO | S_IWUSR, uwb_rc_scan_show, uwb_rc_scan_store);
|