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u-boot/drivers/usb/musb-new/musb_gadget.h

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musb-new: port of Linux musb driver Existing U-Boot musb driver has no support for the new gadget framework and also seems to have other limitations. As gadget framework is ported from Linux it seems pretty natural to port musb gadget driver as well. This driver supports both host and peripheral modes. This is not a replacement for current musb driver (at least now) as there are still some consumers of the old UDC interface. No DMA operation support included, CONFIG_MUSB_PIO_ONLY should be defined. Virtual root hub device is not implemented. Known problems: with no devices connected usb_lowlevel_start() fails. Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
2012-11-06 13:48:21 +00:00
/*
* MUSB OTG driver peripheral defines
*
* Copyright 2005 Mentor Graphics Corporation
* Copyright (C) 2005-2006 by Texas Instruments
* Copyright (C) 2006-2007 Nokia Corporation
*
Add more SPDX-License-Identifier tags In a number of places we had wordings of the GPL (or LGPL in a few cases) license text that were split in such a way that it wasn't caught previously. Convert all of these to the correct SPDX-License-Identifier tag. Signed-off-by: Tom Rini <trini@konsulko.com>
2016-01-15 03:05:13 +00:00
* SPDX-License-Identifier: GPL-2.0
musb-new: port of Linux musb driver Existing U-Boot musb driver has no support for the new gadget framework and also seems to have other limitations. As gadget framework is ported from Linux it seems pretty natural to port musb gadget driver as well. This driver supports both host and peripheral modes. This is not a replacement for current musb driver (at least now) as there are still some consumers of the old UDC interface. No DMA operation support included, CONFIG_MUSB_PIO_ONLY should be defined. Virtual root hub device is not implemented. Known problems: with no devices connected usb_lowlevel_start() fails. Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
2012-11-06 13:48:21 +00:00
*/
#ifndef __MUSB_GADGET_H
#define __MUSB_GADGET_H
#include <linux/list.h>
#ifdef __UBOOT__
#include <asm/byteorder.h>
treewide: replace #include <asm/errno.h> with <linux/errno.h> Now, arch/${ARCH}/include/asm/errno.h and include/linux/errno.h have the same content. (both just wrap <asm-generic/errno.h>) Replace all include directives for <asm/errno.h> with <linux/errno.h>. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> [trini: Fixup include/clk.] Signed-off-by: Tom Rini <trini@konsulko.com>
2016-09-21 02:28:55 +00:00
#include <linux/errno.h>
musb-new: port of Linux musb driver Existing U-Boot musb driver has no support for the new gadget framework and also seems to have other limitations. As gadget framework is ported from Linux it seems pretty natural to port musb gadget driver as well. This driver supports both host and peripheral modes. This is not a replacement for current musb driver (at least now) as there are still some consumers of the old UDC interface. No DMA operation support included, CONFIG_MUSB_PIO_ONLY should be defined. Virtual root hub device is not implemented. Known problems: with no devices connected usb_lowlevel_start() fails. Signed-off-by: Ilya Yanok <ilya.yanok@cogentembedded.com>
2012-11-06 13:48:21 +00:00
#include <linux/usb/ch9.h>
#include <linux/usb/gadget.h>
#endif
enum buffer_map_state {
UN_MAPPED = 0,
PRE_MAPPED,
MUSB_MAPPED
};
struct musb_request {
struct usb_request request;
struct list_head list;
struct musb_ep *ep;
struct musb *musb;
u8 tx; /* endpoint direction */
u8 epnum;
enum buffer_map_state map_state;
};
static inline struct musb_request *to_musb_request(struct usb_request *req)
{
return req ? container_of(req, struct musb_request, request) : NULL;
}
extern struct usb_request *
musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags);
extern void musb_free_request(struct usb_ep *ep, struct usb_request *req);
/*
* struct musb_ep - peripheral side view of endpoint rx or tx side
*/
struct musb_ep {
/* stuff towards the head is basically write-once. */
struct usb_ep end_point;
char name[12];
struct musb_hw_ep *hw_ep;
struct musb *musb;
u8 current_epnum;
/* ... when enabled/disabled ... */
u8 type;
u8 is_in;
u16 packet_sz;
const struct usb_endpoint_descriptor *desc;
struct dma_channel *dma;
/* later things are modified based on usage */
struct list_head req_list;
u8 wedged;
/* true if lock must be dropped but req_list may not be advanced */
u8 busy;
u8 hb_mult;
};
static inline struct musb_ep *to_musb_ep(struct usb_ep *ep)
{
return ep ? container_of(ep, struct musb_ep, end_point) : NULL;
}
static inline struct musb_request *next_request(struct musb_ep *ep)
{
struct list_head *queue = &ep->req_list;
if (list_empty(queue))
return NULL;
return container_of(queue->next, struct musb_request, list);
}
extern void musb_g_tx(struct musb *musb, u8 epnum);
extern void musb_g_rx(struct musb *musb, u8 epnum);
extern const struct usb_ep_ops musb_g_ep0_ops;
extern int musb_gadget_setup(struct musb *);
extern void musb_gadget_cleanup(struct musb *);
extern void musb_g_giveback(struct musb_ep *, struct usb_request *, int);
extern void musb_ep_restart(struct musb *, struct musb_request *);
#ifdef __UBOOT__
int musb_gadget_start(struct usb_gadget *g, struct usb_gadget_driver *driver);
#endif
#endif /* __MUSB_GADGET_H */
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