diff options
Diffstat (limited to 'drivers/usb/host/shost/shost_list.h')
| -rw-r--r-- | drivers/usb/host/shost/shost_list.h | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/drivers/usb/host/shost/shost_list.h b/drivers/usb/host/shost/shost_list.h new file mode 100644 index 0000000..7283fb7 --- /dev/null +++ b/drivers/usb/host/shost/shost_list.h @@ -0,0 +1,188 @@ +/**************************************************************************** + * (C) Copyright 2008 Samsung Electronics Co., Ltd., All rights reserved + * + * @file s3c-otg-hcdi-list.h + * @brief list functions for otg + * @version + * -# Jun 9,2008 v1.0 by SeungSoo Yang (ss1.yang@samsung.com) + * : Creating the initial version of this code + * -# Jul 15,2008 v1.2 by SeungSoo Yang (ss1.yang@samsung.com) + * : Optimizing for performance + * @see None + ****************************************************************************/ +/**************************************************************************** + * 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; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + ****************************************************************************/ + +#ifndef _S3C_OTG_HCDI_LIST_H_ +#define _S3C_OTG_HCDI_LIST_H_ + +#include <linux/list.h> + +typedef struct list_head otg_list_head; + +#define otg_list_get_node(ptr, type, member) container_of(ptr, type, member) + + +#define otg_list_for_each_safe(pos, n, head) \ + for (pos = (head)->next, n = pos->next; pos != (head); \ + pos = n, n = pos->next) + + +/** + * void otg_list_push_next(otg_list_head *n, otg_list_head *list) + * + * @brief push a list node into the next of head + * + * @param [in] n : node to be pushed + * @param [in] otg_list_head : target list head + * + * @return void \n + */ + +static inline +void otg_list_push_next(otg_list_head *n, otg_list_head *list) +{ + otg_dbg(OTG_DBG_OTGHCDI_LIST, "otg_list_push_next\n"); + list_add(n, list); +} + +/** + * void otg_list_push_prev(otg_list_head *n, otg_list_head *list) + * + * @brief push a list node into the previous of head + * + * @param [in] n : node to be pushed + * @param [in] otg_list_head : target list head + * + * @return void \n + */ +static inline +void otg_list_push_prev(otg_list_head *n, otg_list_head *list) +{ + otg_dbg(OTG_DBG_OTGHCDI_LIST, "otg_list_push_prev\n"); + list_add_tail(n, list); +} + +/** + * void otg_list_pop(otg_list_head *list_entity_p) + * + * @brief pop a list node + * + * @param [in] n : node to be poped + * @param [in] otg_list_head : target list head + * + * @return void \n + */ +static inline +void otg_list_pop(otg_list_head *list_entity_p) +{ + otg_dbg(OTG_DBG_OTGHCDI_LIST, "otg_list_pop\n"); + + if (list_entity_p->prev && list_entity_p->next) + list_del(list_entity_p); + else + pr_info("usb: otg_list_pop error\n"); +} + +/** + * void otg_list_move_next(otg_list_head *node_p, otg_list_head *list) + * + * @brief move a list to next of head + * + * @param [in] n : node to be moved + * @param [in] otg_list_head : target list head + * + * @return void \n + */ +static inline +void otg_list_move_next(otg_list_head *node_p, otg_list_head *list) +{ + otg_dbg(OTG_DBG_OTGHCDI_LIST, "otg_list_move_next\n"); + list_move(node_p, list); +} + +/** + * void otg_list_move_prev(otg_list_head *node_p, otg_list_head *list) + * + * @brief move a list to previous of head + * + * @param [in] n : node to be moved + * @param [in] otg_list_head : target list head + * + * @return void \n + */ +static inline +void otg_list_move_prev(otg_list_head *node_p, otg_list_head *list) +{ + otg_dbg(OTG_DBG_OTGHCDI_LIST, "otg_list_move_prev\n"); + list_move_tail(node_p, list); +} + +/** + * bool otg_list_empty(otg_list_head *list) + * + * @brief check a list empty or not + * + * @param [in] list : node to check + * + * @return true : empty list \n + * false : not empty list + */ +static inline +bool otg_list_empty(otg_list_head *list) +{ + /* otg_dbg(OTG_DBG_OTGHCDI_LIST, "otg_list_empty\n"); */ + if (list_empty(list)) + return true; + return false; +} + +/** + * void otg_list_merge(otg_list_head *list_p, otg_list_head *head_p) + * + * @brief merge two list + * + * @param [in] list_p : a head + * @param [in] head_p : target list head + * + * @return void \n + */ +static inline +void otg_list_merge(otg_list_head *list_p, otg_list_head *head_p) +{ + otg_dbg(OTG_DBG_OTGHCDI_LIST, "otg_list_merge\n"); + list_splice(list_p, head_p); +} + +/** + * void otg_list_init(otg_list_head *list_p) + * + * @brief initialize a list + * + * @param [in] list_p : node to be initialized + * + * @return void \n + */ +static inline +void otg_list_init(otg_list_head *list_p) +{ + otg_dbg(OTG_DBG_OTGHCDI_LIST, "otg_list_init\n"); + list_p->next = list_p; + list_p->prev = list_p; +} + +#endif /* _S3C_OTG_HCDI_LIST_H_ */ + |