2850f148cd
commit d97c78a1908e59a1fdbcbece87cd0440b5d7a1f2 upstream. According the programming guide (for all DWC3 IPs), when the driver handles ClearFeature(halt) request, it should issue CLEAR_STALL command _after_ the END_TRANSFER command completes. The END_TRANSFER command may take some time to complete. So, delay the ClearFeature(halt) request control status stage and wait for END_TRANSFER command completion interrupt. Only after END_TRANSFER command completes that the driver may issue CLEAR_STALL command. Cc: stable@vger.kernel.org Fixes: cb11ea56f37a ("usb: dwc3: gadget: Properly handle ClearFeature(halt)") Signed-off-by: Thinh Nguyen <thinhn@synopsys.com> Signed-off-by: Felipe Balbi <balbi@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
132 lines
4.3 KiB
C
132 lines
4.3 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* gadget.h - DesignWare USB3 DRD Gadget Header
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*
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* Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com
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*
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* Authors: Felipe Balbi <balbi@ti.com>,
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* Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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*/
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#ifndef __DRIVERS_USB_DWC3_GADGET_H
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#define __DRIVERS_USB_DWC3_GADGET_H
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#include <linux/list.h>
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#include <linux/usb/gadget.h>
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#include "io.h"
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struct dwc3;
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#define to_dwc3_ep(ep) (container_of(ep, struct dwc3_ep, endpoint))
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#define gadget_to_dwc(g) (container_of(g, struct dwc3, gadget))
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/* DEPCFG parameter 1 */
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#define DWC3_DEPCFG_INT_NUM(n) (((n) & 0x1f) << 0)
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#define DWC3_DEPCFG_XFER_COMPLETE_EN BIT(8)
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#define DWC3_DEPCFG_XFER_IN_PROGRESS_EN BIT(9)
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#define DWC3_DEPCFG_XFER_NOT_READY_EN BIT(10)
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#define DWC3_DEPCFG_FIFO_ERROR_EN BIT(11)
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#define DWC3_DEPCFG_STREAM_EVENT_EN BIT(13)
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#define DWC3_DEPCFG_BINTERVAL_M1(n) (((n) & 0xff) << 16)
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#define DWC3_DEPCFG_STREAM_CAPABLE BIT(24)
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#define DWC3_DEPCFG_EP_NUMBER(n) (((n) & 0x1f) << 25)
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#define DWC3_DEPCFG_BULK_BASED BIT(30)
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#define DWC3_DEPCFG_FIFO_BASED BIT(31)
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/* DEPCFG parameter 0 */
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#define DWC3_DEPCFG_EP_TYPE(n) (((n) & 0x3) << 1)
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#define DWC3_DEPCFG_MAX_PACKET_SIZE(n) (((n) & 0x7ff) << 3)
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#define DWC3_DEPCFG_FIFO_NUMBER(n) (((n) & 0x1f) << 17)
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#define DWC3_DEPCFG_BURST_SIZE(n) (((n) & 0xf) << 22)
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#define DWC3_DEPCFG_DATA_SEQ_NUM(n) ((n) << 26)
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/* This applies for core versions earlier than 1.94a */
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#define DWC3_DEPCFG_IGN_SEQ_NUM BIT(31)
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/* These apply for core versions 1.94a and later */
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#define DWC3_DEPCFG_ACTION_INIT (0 << 30)
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#define DWC3_DEPCFG_ACTION_RESTORE BIT(30)
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#define DWC3_DEPCFG_ACTION_MODIFY (2 << 30)
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/* DEPXFERCFG parameter 0 */
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#define DWC3_DEPXFERCFG_NUM_XFER_RES(n) ((n) & 0xffff)
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/* U1 Device exit Latency */
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#define DWC3_DEFAULT_U1_DEV_EXIT_LAT 0x0A /* Less then 10 microsec */
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/* U2 Device exit Latency */
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#define DWC3_DEFAULT_U2_DEV_EXIT_LAT 0x1FF /* Less then 511 microsec */
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/* -------------------------------------------------------------------------- */
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#define to_dwc3_request(r) (container_of(r, struct dwc3_request, request))
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/**
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* next_request - gets the next request on the given list
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* @list: the request list to operate on
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*
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* Caller should take care of locking. This function return %NULL or the first
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* request available on @list.
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*/
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static inline struct dwc3_request *next_request(struct list_head *list)
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{
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return list_first_entry_or_null(list, struct dwc3_request, list);
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}
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/**
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* dwc3_gadget_move_started_request - move @req to the started_list
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* @req: the request to be moved
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*
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* Caller should take care of locking. This function will move @req from its
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* current list to the endpoint's started_list.
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*/
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static inline void dwc3_gadget_move_started_request(struct dwc3_request *req)
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{
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struct dwc3_ep *dep = req->dep;
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req->status = DWC3_REQUEST_STATUS_STARTED;
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list_move_tail(&req->list, &dep->started_list);
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}
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/**
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* dwc3_gadget_move_cancelled_request - move @req to the cancelled_list
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* @req: the request to be moved
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*
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* Caller should take care of locking. This function will move @req from its
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* current list to the endpoint's cancelled_list.
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*/
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static inline void dwc3_gadget_move_cancelled_request(struct dwc3_request *req)
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{
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struct dwc3_ep *dep = req->dep;
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req->status = DWC3_REQUEST_STATUS_CANCELLED;
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list_move_tail(&req->list, &dep->cancelled_list);
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}
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void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req,
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int status);
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void dwc3_ep0_interrupt(struct dwc3 *dwc,
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const struct dwc3_event_depevt *event);
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void dwc3_ep0_out_start(struct dwc3 *dwc);
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int __dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
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int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value);
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int dwc3_gadget_ep0_queue(struct usb_ep *ep, struct usb_request *request,
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gfp_t gfp_flags);
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int __dwc3_gadget_ep_set_halt(struct dwc3_ep *dep, int value, int protocol);
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void dwc3_ep0_send_delayed_status(struct dwc3 *dwc);
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/**
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* dwc3_gadget_ep_get_transfer_index - Gets transfer index from HW
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* @dep: dwc3 endpoint
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*
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* Caller should take care of locking. Returns the transfer resource
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* index for a given endpoint.
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*/
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static inline void dwc3_gadget_ep_get_transfer_index(struct dwc3_ep *dep)
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{
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u32 res_id;
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res_id = dwc3_readl(dep->regs, DWC3_DEPCMD);
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dep->resource_index = DWC3_DEPCMD_GET_RSC_IDX(res_id);
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}
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#endif /* __DRIVERS_USB_DWC3_GADGET_H */
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