threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
126 lines
3.5 KiB
C
126 lines
3.5 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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* 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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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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u16 fifo_size;
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enum musb_buf_mode fifo_mode;
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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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/* true if packet is received in fifo and req_list is empty */
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u8 rx_pending;
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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 void musb_g_tx(struct musb *musb, u8 epnum);
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extern void musb_g_rx(struct musb *musb, u8 epnum);
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extern const struct usb_ep_ops musb_g_ep0_ops;
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extern int musb_gadget_setup(struct musb *musb);
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extern void musb_gadget_cleanup(struct musb *musb);
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extern void
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musb_g_giveback(struct musb_ep *ep,
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struct usb_request *request,
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int status) __releases(ep->musb->lock) __acquires(ep->musb->lock);
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extern void
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musb_ep_restart(struct musb *musb, struct musb_request *req);
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#endif /* __MUSB_GADGET_H */
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