From 183b9b592a622a7719ee38e275fd7ff3aaf74d0d Mon Sep 17 00:00:00 2001 From: Inaky Perez-Gonzalez Date: Wed, 17 Sep 2008 16:34:06 +0100 Subject: uwb: add the UWB stack (core files) UWB device and radio controller device and event management. Signed-off-by: David Vrabel --- drivers/uwb/pal.c | 71 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100644 drivers/uwb/pal.c (limited to 'drivers/uwb/pal.c') diff --git a/drivers/uwb/pal.c b/drivers/uwb/pal.c new file mode 100644 index 000000000000..5508993a820e --- /dev/null +++ b/drivers/uwb/pal.c @@ -0,0 +1,71 @@ +/* + * UWB PAL support. + * + * Copyright (C) 2008 Cambridge Silicon Radio Ltd. + * + * 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, see . + */ +#include +#include + +#include "uwb-internal.h" + +/** + * uwb_pal_init - initialize a UWB PAL + * @pal: the PAL to initialize + */ +void uwb_pal_init(struct uwb_pal *pal) +{ + INIT_LIST_HEAD(&pal->node); +} +EXPORT_SYMBOL_GPL(uwb_pal_init); + +/** + * uwb_pal_register - register a UWB PAL + * @rc: the radio controller the PAL will be using + * @pal: the PAL + * + * The PAL must be initialized with uwb_pal_init(). + */ +int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal) +{ + spin_lock(&rc->pal_lock); + list_add(&pal->node, &rc->pals); + spin_unlock(&rc->pal_lock); + + return 0; +} +EXPORT_SYMBOL_GPL(uwb_pal_register); + +/** + * uwb_pal_register - unregister a UWB PAL + * @rc: the radio controller the PAL was using + * @pal: the PAL + */ +void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal) +{ + spin_lock(&rc->pal_lock); + list_del(&pal->node); + spin_unlock(&rc->pal_lock); +} +EXPORT_SYMBOL_GPL(uwb_pal_unregister); + +/** + * uwb_rc_pal_init - initialize the PAL related parts of a radio controller + * @rc: the radio controller + */ +void uwb_rc_pal_init(struct uwb_rc *rc) +{ + spin_lock_init(&rc->pal_lock); + INIT_LIST_HEAD(&rc->pals); +} -- cgit v1.2.2 From b60066c141997ac2e4ef08459b75638ae86ae781 Mon Sep 17 00:00:00 2001 From: David Vrabel Date: Wed, 17 Sep 2008 16:34:40 +0100 Subject: uwb: add symlinks in sysfs between radio controllers and PALs Add a facility for PALs to have symlinks to their radio controller (and vice-versa) and make WUSB host controllers use this. Signed-off-by: David Vrabel --- drivers/uwb/pal.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'drivers/uwb/pal.c') diff --git a/drivers/uwb/pal.c b/drivers/uwb/pal.c index 5508993a820e..1afb38eacb9a 100644 --- a/drivers/uwb/pal.c +++ b/drivers/uwb/pal.c @@ -39,6 +39,21 @@ EXPORT_SYMBOL_GPL(uwb_pal_init); */ int uwb_pal_register(struct uwb_rc *rc, struct uwb_pal *pal) { + int ret; + + if (pal->device) { + ret = sysfs_create_link(&pal->device->kobj, + &rc->uwb_dev.dev.kobj, "uwb_rc"); + if (ret < 0) + return ret; + ret = sysfs_create_link(&rc->uwb_dev.dev.kobj, + &pal->device->kobj, pal->name); + if (ret < 0) { + sysfs_remove_link(&pal->device->kobj, "uwb_rc"); + return ret; + } + } + spin_lock(&rc->pal_lock); list_add(&pal->node, &rc->pals); spin_unlock(&rc->pal_lock); @@ -57,6 +72,11 @@ void uwb_pal_unregister(struct uwb_rc *rc, struct uwb_pal *pal) spin_lock(&rc->pal_lock); list_del(&pal->node); spin_unlock(&rc->pal_lock); + + if (pal->device) { + sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name); + sysfs_remove_link(&pal->device->kobj, "uwb_rc"); + } } EXPORT_SYMBOL_GPL(uwb_pal_unregister); -- cgit v1.2.2