diff options
Diffstat (limited to 'drivers/uwb/pal.c')
-rw-r--r-- | drivers/uwb/pal.c | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/drivers/uwb/pal.c b/drivers/uwb/pal.c deleted file mode 100644 index 765fd426dbd1..000000000000 --- a/drivers/uwb/pal.c +++ /dev/null @@ -1,128 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * UWB PAL support. - * - * Copyright (C) 2008 Cambridge Silicon Radio Ltd. - */ -#include <linux/kernel.h> -#include <linux/debugfs.h> -#include <linux/uwb.h> -#include <linux/export.h> - -#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 - * @pal: the PAL - * - * The PAL must be initialized with uwb_pal_init(). - */ -int uwb_pal_register(struct uwb_pal *pal) -{ - struct uwb_rc *rc = pal->rc; - int ret; - - if (pal->device) { - /* create a link to the uwb_rc in the PAL device's directory. */ - ret = sysfs_create_link(&pal->device->kobj, - &rc->uwb_dev.dev.kobj, "uwb_rc"); - if (ret < 0) - return ret; - /* create a link to the PAL in the UWB device's directory. */ - 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; - } - } - - pal->debugfs_dir = uwb_dbg_create_pal_dir(pal); - - mutex_lock(&rc->uwb_dev.mutex); - list_add(&pal->node, &rc->pals); - mutex_unlock(&rc->uwb_dev.mutex); - - return 0; -} -EXPORT_SYMBOL_GPL(uwb_pal_register); - -static int find_rc(struct device *dev, const void *data) -{ - const struct uwb_rc *target_rc = data; - struct uwb_rc *rc = dev_get_drvdata(dev); - - if (rc == NULL) { - WARN_ON(1); - return 0; - } - if (rc == target_rc) { - if (rc->ready == 0) - return 0; - else - return 1; - } - return 0; -} - -/** - * Given a radio controller descriptor see if it is registered. - * - * @returns false if the rc does not exist or is quiescing; true otherwise. - */ -static bool uwb_rc_class_device_exists(struct uwb_rc *target_rc) -{ - struct device *dev; - - dev = class_find_device(&uwb_rc_class, NULL, target_rc, find_rc); - - put_device(dev); - - return (dev != NULL); -} - -/** - * uwb_pal_unregister - unregister a UWB PAL - * @pal: the PAL - */ -void uwb_pal_unregister(struct uwb_pal *pal) -{ - struct uwb_rc *rc = pal->rc; - - uwb_radio_stop(pal); - - mutex_lock(&rc->uwb_dev.mutex); - list_del(&pal->node); - mutex_unlock(&rc->uwb_dev.mutex); - - debugfs_remove(pal->debugfs_dir); - - if (pal->device) { - /* remove link to the PAL in the UWB device's directory. */ - if (uwb_rc_class_device_exists(rc)) - sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name); - - /* remove link to uwb_rc in the PAL device's directory. */ - sysfs_remove_link(&pal->device->kobj, "uwb_rc"); - } -} -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) -{ - INIT_LIST_HEAD(&rc->pals); -} |