775ab07d5e
Some USB controllers like the one of the Rockchip 27xx handle some requests in pure hardware. This is especially a problem for two of them: - SET ADDR which is used by our core to track the DEFAULT/ADDRESS state and is required for the drivers to work properly - SET CONFIG which is used by our core to initialise the drivers by calling init_connection() In these cases we need a way to notify the core that such requests happened. We do this by exporting two functions which directly notify the core about these requests and perform the necessary init steps required without doing the actual USB transfers. Special care is needed because these functions could be called from an interrupt handler. For this reason we still use the usb_queue and introduce new IDs so that they are processed in order and safely. No functional change is intended, both in the usbstack and on targets without such quirks. Change-Id: Ie42feffd4584e88bf37cff018b627f333dca1140
77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2007 by Björn Stenberg
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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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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#ifndef USB_CORE_H
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#define USB_CORE_H
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#include "usb_ch9.h"
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#include "usb.h"
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/* endpoints */
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#define EP_CONTROL 0
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#define DIR_OUT 0
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#define DIR_IN 1
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/* The USB core is a device, and OUT is RX from that P.O.V */
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#define DIR_RX DIR_OUT
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#define DIR_TX DIR_IN
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#define EP_DIR(ep) (((ep) & USB_ENDPOINT_DIR_MASK) ? DIR_IN : DIR_OUT)
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#define EP_NUM(ep) ((ep) & USB_ENDPOINT_NUMBER_MASK)
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extern int usb_max_pkt_size;
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struct usb_class_driver;
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void usb_core_init(void);
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void usb_core_exit(void);
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void usb_core_control_request(struct usb_ctrlrequest* req);
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void usb_core_transfer_complete(int endpoint,int dir,int status,int length);
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void usb_core_bus_reset(void);
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bool usb_core_any_exclusive_storage(void);
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void usb_core_enable_driver(int driver,bool enabled);
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bool usb_core_driver_enabled(int driver);
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void usb_core_handle_transfer_completion(
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struct usb_transfer_completion_event_data* event);
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void usb_core_handle_notify(long id, intptr_t data);
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/* For controllers which handle SET ADDR and/or SET CONFIG in hardware */
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void usb_core_notify_set_address(uint8_t addr);
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void usb_core_notify_set_config(uint8_t config);
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int usb_core_request_endpoint(int type, int dir,struct usb_class_driver* drv);
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void usb_core_release_endpoint(int dir);
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#ifdef HAVE_HOTSWAP
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void usb_core_hotswap_event(int volume,bool inserted);
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#endif
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#ifdef HAVE_USB_CHARGING_ENABLE
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/* hardware which knows how to control usb current should use one
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* of the following to find out from the usb stack how much is ok
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*/
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/* implemented by target, called by usb when value changes */
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void usb_charging_maxcurrent_change(int maxcurrent);
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/* implemented by usb, called by target to get value */
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int usb_charging_maxcurrent(void);
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#endif
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#endif
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