Add MS class skeleton
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3174 42af7a65-404d-4744-a932-0658087f49c3
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drivers/usbhost/usbhost_storage.c
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128
drivers/usbhost/usbhost_storage.c
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/****************************************************************************
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* drivers/usbhost/usbhost_storage.c
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*
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* Copyright (C) 2010 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/usb/usb.h>
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#include <nuttx/usb/usbhost.h>
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static struct usbhost_class_s *usbhost_create(struct usbhost_driver_s *drvr);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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struct usbhost_registry_s g_storage =
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{
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NULL, /* flink */
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usbhost_create, /* create */
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{
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USB_CLASS_MASS_STORAGE, /* id.class */
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0, /* id.vid */
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0 /* id.pid */
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}
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: usbhost_create
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*
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* Description:
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* This function implements the create() method of struct usb_registry_s.
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* The create() method is a callback into the class implementation. It is
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* used to (1) create a new instance of the USB host class state and to (2)
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* bind a USB host driver "session" to the class instance. Use of this
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* create() method will support environments where there may be multiple
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* USB ports and multiple USB devices simultaneously connected.
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*
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* Input Parameters:
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* drvr - An instance of struct usbhost_driver_s that the class
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* implementation will "bind" to its state structure and will
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* subsequently use to communicate with the USB host driver.
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*
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* Returned Values:
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* On success, this function will return a non-NULL instance of struct
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* usbhost_class_s that can be used by the USB host driver to communicate
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* with the USB host class. NULL is returned on failure; this function
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* will fail only if the drvr input parameter is NULL or if there are
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* insufficient resources to create another USB host class instance.
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*
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****************************************************************************/
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static struct usbhost_class_s *usbhost_create(struct usbhost_driver_s *drvr)
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{
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#warning "Not implemented"
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return NULL;
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}
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: usbhost_storageinit
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*
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* Description:
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* Initialize the USB host storage class. This function should be called
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* be platform-specific code in order to initialize and register support
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* for the USB host storage class.
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*
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* Input Parameters:
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* None
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*
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* Returned Values:
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* On success this function will return zero (OK); A negated errno value
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* will be returned on failure.
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*
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****************************************************************************/
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int usbhost_storageinit(void)
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{
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/* Advertise our availability to support mass storage devices */
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return usbhost_registerclass(&g_storage);
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}
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@ -113,7 +113,7 @@ struct usbhost_registry_s
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* provide those instances in write-able memory (RAM).
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*/
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struct usbhsot_registry_s flink;
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struct usbhost_registry_s flink;
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/* This is a callback into the class implementation. It is used to (1) create
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* a new instance of the USB host class state and to (2) bind a USB host driver
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@ -122,7 +122,7 @@ struct usbhost_registry_s
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* simultaneously connected (see the CLASS_CREATE() macro above).
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*/
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struct usbhost_class_s *(*create)(struct usbhost_driver_s *drvr);
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struct usbhost_class_s *(*create)(struct usbhost_driver_s *drvr);
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/* This information uniquely identifies the USB host class implementation that
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* goes with a specific USB device.
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@ -191,6 +191,25 @@ EXTERN int usbhost_registerclass(struct usbhost_registry_s *class);
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EXTERN const struct usbhost_registry_s *usbhost_findclass(const struct usbhost_id_s *id);
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/****************************************************************************
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* Name: usbhost_storageinit
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*
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* Description:
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* Initialize the USB host storage class. This function should be called
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* be platform-specific code in order to initialize and register support
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* for the USB host storage class.
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*
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* Input Parameters:
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* None
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*
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* Returned Values:
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* On success this function will return zero (OK); A negated errno value
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* will be returned on failure.
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*
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****************************************************************************/
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EXTERN int usbhost_storageinit(void);
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#undef EXTERN
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#if defined(__cplusplus)
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}
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