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incubator-nuttx/drivers/usbdev/composite_desc.c

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/****************************************************************************
* drivers/usbdev/composite_desc.c
*
* Copyright (C) 2011-2012, 2017 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 <string.h>
#include <errno.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/usb/usbdev_trace.h>
#include "composite.h"
#ifdef CONFIG_USBDEV_COMPOSITE
/****************************************************************************
* Private Data
****************************************************************************/
/* Device Descriptor */
static const struct usb_devdesc_s g_devdesc =
{
USB_SIZEOF_DEVDESC, /* len */
USB_DESC_TYPE_DEVICE, /* type */
{ /* usb */
LSBYTE(0x0200),
MSBYTE(0x0200)
},
#ifndef CONFIG_COMPOSITE_IAD
USB_CLASS_MISC, /* classid */
2, /* subclass */
1, /* protocol */
#else
USB_CLASS_PER_INTERFACE, /* classid */
0, /* subclass */
0, /* protocol */
#endif
CONFIG_COMPOSITE_EP0MAXPACKET, /* maxpacketsize */
{
LSBYTE(CONFIG_COMPOSITE_VENDORID), /* vendor */
MSBYTE(CONFIG_COMPOSITE_VENDORID)
},
{
LSBYTE(CONFIG_COMPOSITE_PRODUCTID), /* product */
MSBYTE(CONFIG_COMPOSITE_PRODUCTID)
},
{
LSBYTE(CONFIG_COMPOSITE_VERSIONNO), /* device */
MSBYTE(CONFIG_COMPOSITE_VERSIONNO)
},
COMPOSITE_MANUFACTURERSTRID, /* imfgr */
COMPOSITE_PRODUCTSTRID, /* iproduct */
COMPOSITE_SERIALSTRID, /* serno */
COMPOSITE_NCONFIGS /* nconfigs */
};
#ifdef CONFIG_USBDEV_DUALSPEED
static const struct usb_qualdesc_s g_qualdesc =
{
USB_SIZEOF_QUALDESC, /* len */
USB_DESC_TYPE_DEVICEQUALIFIER, /* type */
{ /* usb */
LSBYTE(0x0200),
MSBYTE(0x0200)
},
USB_CLASS_VENDOR_SPEC, /* classid */
0, /* subclass */
0, /* protocol */
CONFIG_COMPOSITE_EP0MAXPACKET, /* mxpacketsize */
COMPOSITE_NCONFIGS, /* nconfigs */
0, /* reserved */
};
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: composite_mkstrdesc
*
* Description:
* Construct a string descriptor
*
****************************************************************************/
int composite_mkstrdesc(uint8_t id, struct usb_strdesc_s *strdesc)
{
const char *str;
int len;
int ndata;
int i;
switch (id)
{
case 0:
{
/* Descriptor 0 is the language id */
strdesc->len = 4;
strdesc->type = USB_DESC_TYPE_STRING;
strdesc->data[0] = LSBYTE(COMPOSITE_STR_LANGUAGE);
strdesc->data[1] = MSBYTE(COMPOSITE_STR_LANGUAGE);
return 4;
}
case COMPOSITE_MANUFACTURERSTRID:
str = g_compvendorstr;
break;
case COMPOSITE_PRODUCTSTRID:
str = g_compproductstr;
break;
case COMPOSITE_SERIALSTRID:
str = g_compserialstr;
break;
case COMPOSITE_CONFIGSTRID:
str = CONFIG_COMPOSITE_CONFIGSTR;
break;
default:
return -EINVAL;
}
/* The string is utf16-le. The poor man's utf-8 to utf16-le
* conversion below will only handle 7-bit en-us ascii
*/
len = strlen(str);
for (i = 0, ndata = 0; i < len; i++, ndata += 2)
{
strdesc->data[ndata] = str[i];
strdesc->data[ndata + 1] = 0;
}
strdesc->len = ndata + 2;
strdesc->type = USB_DESC_TYPE_STRING;
return strdesc->len;
}
/****************************************************************************
* Name: composite_getepdesc
*
* Description:
* Return a pointer to the raw device descriptor
*
****************************************************************************/
FAR const struct usb_devdesc_s *composite_getdevdesc(void)
{
return &g_devdesc;
}
/****************************************************************************
* Name: composite_mkcfgdesc
*
* Description:
* Construct the configuration descriptor
*
****************************************************************************/
#ifdef CONFIG_USBDEV_DUALSPEED
int16_t composite_mkcfgdesc(FAR struct composite_dev_s *priv, FAR uint8_t *buf,
uint8_t speed, uint8_t type)
#else
int16_t composite_mkcfgdesc(FAR struct composite_dev_s *priv, FAR uint8_t *buf)
#endif
{
FAR struct usb_cfgdesc_s *cfgdesc = (FAR struct usb_cfgdesc_s *)buf;
int16_t len;
int16_t total;
int i;
/* Configuration descriptor for the composite device */
/* Fill in the values directly into the buf */
cfgdesc->len = USB_SIZEOF_CFGDESC; /* Descriptor length */
#ifdef CONFIG_USBDEV_DUALSPEED
cfgdesc->type = type; /* Descriptor type */
#else
cfgdesc->type = USB_DESC_TYPE_CONFIG; /* Descriptor type */
#endif
cfgdesc->totallen[0] = LSBYTE(priv->cfgdescsize); /* Lower Byte of Total length */
cfgdesc->totallen[1] = MSBYTE(priv->cfgdescsize); /* High Byte of Total length */
cfgdesc->ninterfaces = priv->ninterfaces; /* Number of interfaces */
cfgdesc->cfgvalue = COMPOSITE_CONFIGID; /* Configuration value */
cfgdesc->icfg = COMPOSITE_CONFIGSTRID; /* Configuration */
cfgdesc->attr = USB_CONFIG_ATTR_ONE | /* Attributes */
COMPOSITE_SELFPOWERED |
COMPOSITE_REMOTEWAKEUP;
cfgdesc->mxpower = (CONFIG_USBDEV_MAXPOWER + 1) / 2; /* Max power (mA/2) */
/* increment the size and buf to point right behind the information filled in */
total = USB_SIZEOF_CFGDESC;
buf += USB_SIZEOF_CFGDESC;
/* Copy all contained interface descriptors into the buffer too */
for (i = 0; i < priv->ndevices; i++)
{
#ifdef CONFIG_USBDEV_DUALSPEED
len = priv->device[i].compdesc.mkconfdesc(buf,
&priv->device[i].compdesc.devinfo,
speed, type);
total += len;
buf += len;
#else
len = priv->device[i].compdesc.mkconfdesc(buf,
&priv->device[i].compdesc.devinfo);
total += len;
buf += len;
#endif
}
return total;
}
/****************************************************************************
* Name: composite_getqualdesc
*
* Description:
* Return a pointer to the raw qual descriptor
*
****************************************************************************/
#ifdef CONFIG_USBDEV_DUALSPEED
FAR const struct usb_qualdesc_s *composite_getqualdesc(void)
{
return &g_qualdesc;
}
#endif
#endif /* CONFIG_USBDEV_COMPOSITE */
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