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/****************************************************************************
* drivers/usbdev/composite.c
*
* Copyright (C) 2012 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <stdint.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/usb/usbdev_trace.h>
#include "composite.h"
#ifdef CONFIG_USBDEV_COMPOSITE
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: composite_setup
*
* Description:
* Invoked for ep0 control requests. This function probably executes
* in the context of an interrupt handler.
*
****************************************************************************/
#if 0
static int composite_setup(FAR struct usbdev_s *dev,
FAR const struct usb_ctrlreq_s *ctrl)
{
FAR struct composite_dev_s *priv;
FAR struct usbdev_req_s *ctrlreq;
uint16_t value;
uint16_t index;
uint16_t len;
int ret = -EOPNOTSUPP;
#ifdef CONFIG_DEBUG
if (!dev || !dev->ep0 || !ctrl)
{
usbtrace(TRACE_CLSERROR(USBSTRG_TRACEERR_SETUPINVALIDARGS), 0);
return -EIO;
}
#endif
/* Extract reference to private data */
usbtrace(TRACE_CLASSSETUP, ctrl->req);
priv = (FAR struct composite_dev_s *)dev->ep0->priv;
#ifdef CONFIG_DEBUG
if (!priv || !priv->ctrlreq)
{
usbtrace(TRACE_CLSERROR(USBSTRG_TRACEERR_EP0NOTBOUND2), 0);
return -ENODEV;
}
#endif
ctrlreq = priv->ctrlreq;
/* Extract the little-endian 16-bit values to host order */
value = GETUINT16(ctrl->value);
index = GETUINT16(ctrl->index);
len = GETUINT16(ctrl->len);
uvdbg("type=%02x req=%02x value=%04x index=%04x len=%04x\n",
ctrl->type, ctrl->req, value, index, len);
if ((ctrl->type & USB_REQ_TYPE_MASK) == USB_REQ_TYPE_STANDARD)
{
/**********************************************************************
* Standard Requests
**********************************************************************/
switch (ctrl->req)
{
case USB_REQ_GETDESCRIPTOR:
{
/* The value field specifies the descriptor type in the MS byte and the
* descriptor index in the LS byte (order is little endian)
*/
switch (ctrl->value[1])
{
case USB_DESC_TYPE_DEVICE:
{
ret = USB_SIZEOF_DEVDESC;
memcpy(ctrlreq->buf, composite_getdevdesc(), ret);
}
break;
#ifdef CONFIG_USBDEV_DUALSPEED
case USB_DESC_TYPE_DEVICEQUALIFIER:
{
ret = USB_SIZEOF_QUALDESC;
memcpy(ctrlreq->buf, composite_getqualdesc(), ret);
}
break;
case USB_DESC_TYPE_OTHERSPEEDCONFIG:
#endif /* CONFIG_USBDEV_DUALSPEED */
case USB_DESC_TYPE_CONFIG:
{
#ifdef CONFIG_USBDEV_DUALSPEED
ret = composite_mkcfgdesc(ctrlreq->buf, dev->speed, ctrl->value[1]);
#else
ret = composite_mkcfgdesc(ctrlreq->buf);
#endif
}
break;
case USB_DESC_TYPE_STRING:
{
/* index == language code. */
ret = composite_mkstrdesc(ctrl->value[0], (struct usb_strdesc_s *)ctrlreq->buf);
}
break;
default:
{
usbtrace(TRACE_CLSERROR(USBSTRG_TRACEERR_GETUNKNOWNDESC), value);
}
break;
}
}
break;
case USB_REQ_SETCONFIGURATION:
{
if (ctrl->type == 0)
{
/* Signal the worker thread to instantiate the new configuration */
priv->theventset |= USBSTRG_EVENT_CFGCHANGE;
priv->thvalue = value;
pthread_cond_signal(&priv->cond);
/* Return here... the response will be provided later by the
* worker thread.
*/
return OK;
}
}
break;
case USB_REQ_GETCONFIGURATION:
{
if (ctrl->type == USB_DIR_IN)
{
ctrlreq->buf[0] = priv->config;
ret = 1;
}
}
break;
case USB_REQ_SETINTERFACE:
{
if (ctrl->type == USB_REQ_RECIPIENT_INTERFACE)
{
if (priv->config == USBSTRG_CONFIGID &&
index == USBSTRG_INTERFACEID &&
value == USBSTRG_ALTINTERFACEID)
{
/* Signal to instantiate the interface change */
priv->theventset |= USBSTRG_EVENT_IFCHANGE;
pthread_cond_signal(&priv->cond);
/* Return here... the response will be provided later by the
* worker thread.
*/
return OK;
}
}
}
break;
case USB_REQ_GETINTERFACE:
{
if (ctrl->type == (USB_DIR_IN|USB_REQ_RECIPIENT_INTERFACE) &&
priv->config == USBSTRG_CONFIGIDNONE)
{
if (index != USBSTRG_INTERFACEID)
{
ret = -EDOM;
}
else
{
ctrlreq->buf[0] = USBSTRG_ALTINTERFACEID;
ret = 1;
}
}
}
break;
default:
usbtrace(TRACE_CLSERROR(USBSTRG_TRACEERR_UNSUPPORTEDSTDREQ), ctrl->req);
break;
}
/* Respond to the setup command if data was returned. On an error return
* value (ret < 0), the USB driver will stall EP0.
*/
if (ret >= 0)
{
ctrlreq->len = min(len, ret);
ctrlreq->flags = USBDEV_REQFLAGS_NULLPKT;
ret = EP_SUBMIT(dev->ep0, ctrlreq);
if (ret < 0)
{
usbtrace(TRACE_CLSERROR(USBSTRG_TRACEERR_EPRESPQ), (uint16_t)-ret);
ctrlreq->result = OK;
composite_ep0incomplete(dev->ep0, ctrlreq);
}
}
else
{
/**********************************************************************
* Non-Standard Class Requests
**********************************************************************/
#warning "Missing Logic"
}
return ret;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
#endif /* CONFIG_USBDEV_COMPOSITE */
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