mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 08:30:52 +07:00
e81a7018d9
The current code uses commit fac323471d ("usb: udc: allow adding
and removing the same gadget device") as the workaround to let
the gadget device is re-used, but it is not allowed from driver
core point. In this commit, we allocate gadget structure dynamically,
and free it at its release function. Since the gadget device's
driver_data has already occupied by usb_composite_dev structure, we have
to use gadget device's platform data to store dwc3 structure.
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
148 lines
4.8 KiB
C
148 lines
4.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* gadget.h - DesignWare USB3 DRD Gadget Header
|
|
*
|
|
* Copyright (C) 2010-2011 Texas Instruments Incorporated - https://www.ti.com
|
|
*
|
|
* Authors: Felipe Balbi <balbi@ti.com>,
|
|
* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
|
|
*/
|
|
|
|
#ifndef __DRIVERS_USB_DWC3_GADGET_H
|
|
#define __DRIVERS_USB_DWC3_GADGET_H
|
|
|
|
#include <linux/list.h>
|
|
#include <linux/usb/gadget.h>
|
|
#include "io.h"
|
|
|
|
struct dwc3;
|
|
#define to_dwc3_ep(ep) (container_of(ep, struct dwc3_ep, endpoint))
|
|
#define gadget_to_dwc(g) (dev_get_platdata(&g->dev))
|
|
|
|
/* DEPCFG parameter 1 */
|
|
#define DWC3_DEPCFG_INT_NUM(n) (((n) & 0x1f) << 0)
|
|
#define DWC3_DEPCFG_XFER_COMPLETE_EN BIT(8)
|
|
#define DWC3_DEPCFG_XFER_IN_PROGRESS_EN BIT(9)
|
|
#define DWC3_DEPCFG_XFER_NOT_READY_EN BIT(10)
|
|
#define DWC3_DEPCFG_FIFO_ERROR_EN BIT(11)
|
|
#define DWC3_DEPCFG_STREAM_EVENT_EN BIT(13)
|
|
#define DWC3_DEPCFG_BINTERVAL_M1(n) (((n) & 0xff) << 16)
|
|
#define DWC3_DEPCFG_STREAM_CAPABLE BIT(24)
|
|
#define DWC3_DEPCFG_EP_NUMBER(n) (((n) & 0x1f) << 25)
|
|
#define DWC3_DEPCFG_BULK_BASED BIT(30)
|
|
#define DWC3_DEPCFG_FIFO_BASED BIT(31)
|
|
|
|
/* DEPCFG parameter 0 */
|
|
#define DWC3_DEPCFG_EP_TYPE(n) (((n) & 0x3) << 1)
|
|
#define DWC3_DEPCFG_MAX_PACKET_SIZE(n) (((n) & 0x7ff) << 3)
|
|
#define DWC3_DEPCFG_FIFO_NUMBER(n) (((n) & 0x1f) << 17)
|
|
#define DWC3_DEPCFG_BURST_SIZE(n) (((n) & 0xf) << 22)
|
|
#define DWC3_DEPCFG_DATA_SEQ_NUM(n) ((n) << 26)
|
|
/* This applies for core versions earlier than 1.94a */
|
|
#define DWC3_DEPCFG_IGN_SEQ_NUM BIT(31)
|
|
/* These apply for core versions 1.94a and later */
|
|
#define DWC3_DEPCFG_ACTION_INIT (0 << 30)
|
|
#define DWC3_DEPCFG_ACTION_RESTORE BIT(30)
|
|
#define DWC3_DEPCFG_ACTION_MODIFY (2 << 30)
|
|
|
|
/* DEPXFERCFG parameter 0 */
|
|
#define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff)
|
|
|
|
/* U1 Device exit Latency */
|
|
#define DWC3_DEFAULT_U1_DEV_EXIT_LAT 0x0A /* Less then 10 microsec */
|
|
|
|
/* U2 Device exit Latency */
|
|
#define DWC3_DEFAULT_U2_DEV_EXIT_LAT 0x1FF /* Less then 511 microsec */
|
|
|
|
/* Frame/Microframe Number Mask */
|
|
#define DWC3_FRNUMBER_MASK 0x3fff
|
|
/* -------------------------------------------------------------------------- */
|
|
|
|
#define to_dwc3_request(r) (container_of(r, struct dwc3_request, request))
|
|
|
|
/**
|
|
* next_request - gets the next request on the given list
|
|
* @list: the request list to operate on
|
|
*
|
|
* Caller should take care of locking. This function return %NULL or the first
|
|
* request available on @list.
|
|
*/
|
|
static inline struct dwc3_request *next_request(struct list_head *list)
|
|
{
|
|
return list_first_entry_or_null(list, struct dwc3_request, list);
|
|
}
|
|
|
|
/**
|
|
* dwc3_gadget_move_started_request - move @req to the started_list
|
|
* @req: the request to be moved
|
|
*
|
|
* Caller should take care of locking. This function will move @req from its
|
|
* current list to the endpoint's started_list.
|
|
*/
|
|
static inline void dwc3_gadget_move_started_request(struct dwc3_request *req)
|
|
{
|
|
struct dwc3_ep *dep = req->dep;
|
|
|
|
req->status = DWC3_REQUEST_STATUS_STARTED;
|
|
list_move_tail(&req->list, &dep->started_list);
|
|
}
|
|
|
|
/**
|
|
* dwc3_gadget_move_cancelled_request - move @req to the cancelled_list
|
|
* @req: the request to be moved
|
|
*
|
|
* Caller should take care of locking. This function will move @req from its
|
|
* current list to the endpoint's cancelled_list.
|
|
*/
|
|
static inline void dwc3_gadget_move_cancelled_request(struct dwc3_request *req)
|
|
{
|
|
struct dwc3_ep *dep = req->dep;
|
|
|
|
req->status = DWC3_REQUEST_STATUS_CANCELLED;
|
|
list_move_tail(&req->list, &dep->cancelled_list);
|
|
}
|
|
|
|
void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
|
|
int status);
|
|
|
|
void dwc3_ep0_interrupt(struct dwc3 *dwc,
|
|
const struct dwc3_event_depevt *event);
|
|
void dwc3_ep0_out_start(struct dwc3 *dwc);
|
|
int __dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
|
|
int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
|
|
int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
|
|
gfp_t gfp_flags);
|
|
int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol);
|
|
void dwc3_ep0_send_delayed_status(struct dwc3 *dwc);
|
|
|
|
/**
|
|
* dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
|
|
* @dep: dwc3 endpoint
|
|
*
|
|
* Caller should take care of locking. Returns the transfer resource
|
|
* index for a given endpoint.
|
|
*/
|
|
static inline void dwc3_gadget_ep_get_transfer_index(struct dwc3_ep *dep)
|
|
{
|
|
u32 res_id;
|
|
|
|
res_id = dwc3_readl(dep->regs, DWC3_DEPCMD);
|
|
dep->resource_index = DWC3_DEPCMD_GET_RSC_IDX(res_id);
|
|
}
|
|
|
|
/**
|
|
* dwc3_gadget_dctl_write_safe - write to DCTL safe from link state change
|
|
* @dwc: pointer to our context structure
|
|
* @value: value to write to DCTL
|
|
*
|
|
* Use this function when doing read-modify-write to DCTL. It will not
|
|
* send link state change request.
|
|
*/
|
|
static inline void dwc3_gadget_dctl_write_safe(struct dwc3 *dwc, u32 value)
|
|
{
|
|
value &= ~DWC3_DCTL_ULSTCHNGREQ_MASK;
|
|
dwc3_writel(dwc->regs, DWC3_DCTL, value);
|
|
}
|
|
|
|
#endif /* __DRIVERS_USB_DWC3_GADGET_H */
|