1550a7375SFelipe Balbi /* 2550a7375SFelipe Balbi * MUSB OTG driver peripheral defines 3550a7375SFelipe Balbi * 4550a7375SFelipe Balbi * Copyright 2005 Mentor Graphics Corporation 5550a7375SFelipe Balbi * Copyright (C) 2005-2006 by Texas Instruments 6550a7375SFelipe Balbi * Copyright (C) 2006-2007 Nokia Corporation 7550a7375SFelipe Balbi * 8550a7375SFelipe Balbi * This program is free software; you can redistribute it and/or 9550a7375SFelipe Balbi * modify it under the terms of the GNU General Public License 10550a7375SFelipe Balbi * version 2 as published by the Free Software Foundation. 11550a7375SFelipe Balbi * 12550a7375SFelipe Balbi * This program is distributed in the hope that it will be useful, but 13550a7375SFelipe Balbi * WITHOUT ANY WARRANTY; without even the implied warranty of 14550a7375SFelipe Balbi * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15550a7375SFelipe Balbi * General Public License for more details. 16550a7375SFelipe Balbi * 17550a7375SFelipe Balbi * You should have received a copy of the GNU General Public License 18550a7375SFelipe Balbi * along with this program; if not, write to the Free Software 19550a7375SFelipe Balbi * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 20550a7375SFelipe Balbi * 02110-1301 USA 21550a7375SFelipe Balbi * 22550a7375SFelipe Balbi * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 23550a7375SFelipe Balbi * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 24550a7375SFelipe Balbi * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 25550a7375SFelipe Balbi * NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, 26550a7375SFelipe Balbi * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 27550a7375SFelipe Balbi * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 28550a7375SFelipe Balbi * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 29550a7375SFelipe Balbi * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30550a7375SFelipe Balbi * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 31550a7375SFelipe Balbi * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32550a7375SFelipe Balbi * 33550a7375SFelipe Balbi */ 34550a7375SFelipe Balbi 35550a7375SFelipe Balbi #ifndef __MUSB_GADGET_H 36550a7375SFelipe Balbi #define __MUSB_GADGET_H 37550a7375SFelipe Balbi 38550a7375SFelipe Balbi struct musb_request { 39550a7375SFelipe Balbi struct usb_request request; 40550a7375SFelipe Balbi struct musb_ep *ep; 41550a7375SFelipe Balbi struct musb *musb; 42550a7375SFelipe Balbi u8 tx; /* endpoint direction */ 43550a7375SFelipe Balbi u8 epnum; 44550a7375SFelipe Balbi u8 mapped; 45550a7375SFelipe Balbi }; 46550a7375SFelipe Balbi 47550a7375SFelipe Balbi static inline struct musb_request *to_musb_request(struct usb_request *req) 48550a7375SFelipe Balbi { 49550a7375SFelipe Balbi return req ? container_of(req, struct musb_request, request) : NULL; 50550a7375SFelipe Balbi } 51550a7375SFelipe Balbi 52550a7375SFelipe Balbi extern struct usb_request * 53550a7375SFelipe Balbi musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags); 54550a7375SFelipe Balbi extern void musb_free_request(struct usb_ep *ep, struct usb_request *req); 55550a7375SFelipe Balbi 56550a7375SFelipe Balbi 57550a7375SFelipe Balbi /* 58550a7375SFelipe Balbi * struct musb_ep - peripheral side view of endpoint rx or tx side 59550a7375SFelipe Balbi */ 60550a7375SFelipe Balbi struct musb_ep { 61550a7375SFelipe Balbi /* stuff towards the head is basically write-once. */ 62550a7375SFelipe Balbi struct usb_ep end_point; 63550a7375SFelipe Balbi char name[12]; 64550a7375SFelipe Balbi struct musb_hw_ep *hw_ep; 65550a7375SFelipe Balbi struct musb *musb; 66550a7375SFelipe Balbi u8 current_epnum; 67550a7375SFelipe Balbi 68550a7375SFelipe Balbi /* ... when enabled/disabled ... */ 69550a7375SFelipe Balbi u8 type; 70550a7375SFelipe Balbi u8 is_in; 71550a7375SFelipe Balbi u16 packet_sz; 72550a7375SFelipe Balbi const struct usb_endpoint_descriptor *desc; 73550a7375SFelipe Balbi struct dma_channel *dma; 74550a7375SFelipe Balbi 75550a7375SFelipe Balbi /* later things are modified based on usage */ 76550a7375SFelipe Balbi struct list_head req_list; 77550a7375SFelipe Balbi 7847e97605SSergei Shtylyov u8 wedged; 7947e97605SSergei Shtylyov 80550a7375SFelipe Balbi /* true if lock must be dropped but req_list may not be advanced */ 81550a7375SFelipe Balbi u8 busy; 82550a7375SFelipe Balbi }; 83550a7375SFelipe Balbi 84550a7375SFelipe Balbi static inline struct musb_ep *to_musb_ep(struct usb_ep *ep) 85550a7375SFelipe Balbi { 86550a7375SFelipe Balbi return ep ? container_of(ep, struct musb_ep, end_point) : NULL; 87550a7375SFelipe Balbi } 88550a7375SFelipe Balbi 89550a7375SFelipe Balbi static inline struct usb_request *next_request(struct musb_ep *ep) 90550a7375SFelipe Balbi { 91550a7375SFelipe Balbi struct list_head *queue = &ep->req_list; 92550a7375SFelipe Balbi 93550a7375SFelipe Balbi if (list_empty(queue)) 94550a7375SFelipe Balbi return NULL; 95550a7375SFelipe Balbi return container_of(queue->next, struct usb_request, list); 96550a7375SFelipe Balbi } 97550a7375SFelipe Balbi 98550a7375SFelipe Balbi extern void musb_g_tx(struct musb *musb, u8 epnum); 99550a7375SFelipe Balbi extern void musb_g_rx(struct musb *musb, u8 epnum); 100550a7375SFelipe Balbi 101550a7375SFelipe Balbi extern const struct usb_ep_ops musb_g_ep0_ops; 102550a7375SFelipe Balbi 103550a7375SFelipe Balbi extern int musb_gadget_setup(struct musb *); 104550a7375SFelipe Balbi extern void musb_gadget_cleanup(struct musb *); 105550a7375SFelipe Balbi 106550a7375SFelipe Balbi extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int); 107550a7375SFelipe Balbi 108*a666e3e6SSergei Shtylyov extern void musb_ep_restart(struct musb *, struct musb_request *); 109*a666e3e6SSergei Shtylyov 110550a7375SFelipe Balbi #endif /* __MUSB_GADGET_H */ 111