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b7b741ea38
This makes building the actual object files optional to the selected mode, which saves users who know which kind of USB mode support they need some binary size. Unimplemented functions are stubbed out with static inline functions. Signed-off-by: Daniel Mack <zonque@gmail.com> Acked-by: Peter Korsgaard <jacmet@sunsite.dk> Signed-off-by: Felipe Balbi <balbi@ti.com>
148 lines
4.5 KiB
C
148 lines
4.5 KiB
C
/*
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* MUSB OTG driver peripheral defines
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*
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* Copyright 2005 Mentor Graphics Corporation
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* Copyright (C) 2005-2006 by Texas Instruments
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* Copyright (C) 2006-2007 Nokia Corporation
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
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* NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef __MUSB_GADGET_H
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#define __MUSB_GADGET_H
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#include <linux/list.h>
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#if IS_ENABLED(CONFIG_USB_MUSB_GADGET) || IS_ENABLED(CONFIG_USB_MUSB_DUAL_ROLE)
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extern irqreturn_t musb_g_ep0_irq(struct musb *);
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extern void musb_g_tx(struct musb *, u8);
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extern void musb_g_rx(struct musb *, u8);
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extern void musb_g_reset(struct musb *);
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extern void musb_g_suspend(struct musb *);
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extern void musb_g_resume(struct musb *);
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extern void musb_g_wakeup(struct musb *);
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extern void musb_g_disconnect(struct musb *);
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extern void musb_gadget_cleanup(struct musb *);
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extern int musb_gadget_setup(struct musb *);
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#else
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static inline irqreturn_t musb_g_ep0_irq(struct musb *musb)
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{
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return 0;
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}
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static inline void musb_g_tx(struct musb *musb, u8 epnum) {}
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static inline void musb_g_rx(struct musb *musb, u8 epnum) {}
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static inline void musb_g_reset(struct musb *musb) {}
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static inline void musb_g_suspend(struct musb *musb) {}
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static inline void musb_g_resume(struct musb *musb) {}
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static inline void musb_g_wakeup(struct musb *musb) {}
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static inline void musb_g_disconnect(struct musb *musb) {}
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static inline void musb_gadget_cleanup(struct musb *musb) {}
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static inline int musb_gadget_setup(struct musb *musb)
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{
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return 0;
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}
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#endif
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enum buffer_map_state {
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UN_MAPPED = 0,
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PRE_MAPPED,
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MUSB_MAPPED
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};
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struct musb_request {
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struct usb_request request;
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struct list_head list;
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struct musb_ep *ep;
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struct musb *musb;
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u8 tx; /* endpoint direction */
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u8 epnum;
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enum buffer_map_state map_state;
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};
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static inline struct musb_request *to_musb_request(struct usb_request *req)
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{
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return req ? container_of(req, struct musb_request, request) : NULL;
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}
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extern struct usb_request *
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musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags);
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extern void musb_free_request(struct usb_ep *ep, struct usb_request *req);
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/*
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* struct musb_ep - peripheral side view of endpoint rx or tx side
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*/
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struct musb_ep {
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/* stuff towards the head is basically write-once. */
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struct usb_ep end_point;
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char name[12];
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struct musb_hw_ep *hw_ep;
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struct musb *musb;
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u8 current_epnum;
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/* ... when enabled/disabled ... */
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u8 type;
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u8 is_in;
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u16 packet_sz;
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const struct usb_endpoint_descriptor *desc;
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struct dma_channel *dma;
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/* later things are modified based on usage */
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struct list_head req_list;
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u8 wedged;
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/* true if lock must be dropped but req_list may not be advanced */
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u8 busy;
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u8 hb_mult;
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};
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static inline struct musb_ep *to_musb_ep(struct usb_ep *ep)
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{
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return ep ? container_of(ep, struct musb_ep, end_point) : NULL;
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}
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static inline struct musb_request *next_request(struct musb_ep *ep)
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{
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struct list_head *queue = &ep->req_list;
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if (list_empty(queue))
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return NULL;
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return container_of(queue->next, struct musb_request, list);
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}
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extern const struct usb_ep_ops musb_g_ep0_ops;
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extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int);
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extern void musb_ep_restart(struct musb *, struct musb_request *);
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#endif /* __MUSB_GADGET_H */
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