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nuttx/boards/arm/samd5e5/metro-m4/src/sam_composite.c
Alin Jerpelea 20d315abfe NuttX: Falker Atomacao Agrícola Ltda: update licenses to Apache 
Falker Atomacao Agrícola Ltda has submitted the SGA and we can migrate the licenses
 to Apache.

Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
2021-04-13 05:28:28 -05:00

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/****************************************************************************
* boards/arm/samd5e5/metro-m4/src/sam_composite.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/usb/usbdev.h>
#include <nuttx/usb/usbdev_trace.h>
#include <nuttx/usb/cdcacm.h>
#include <nuttx/usb/usbmsc.h>
#include <nuttx/usb/composite.h>
#include "metro-m4.h"
#if defined(CONFIG_BOARDCTL_USBDEVCTRL) && defined(CONFIG_USBDEV_COMPOSITE)
/****************************************************************************
* Private Data
****************************************************************************/
#ifdef CONFIG_USBMSC_COMPOSITE
static FAR void *g_mschandle;
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: board_mscclassobject
*
* Description:
* If the mass storage class driver is part of composite device, then
* its instantiation and configuration is a multi-step, board-specific,
* process (See comments for usbmsc_configure below). In this case,
* board-specific logic must provide board_mscclassobject().
*
* board_mscclassobject() is called from the composite driver. It must
* encapsulate the instantiation and configuration of the mass storage
* class and the return the mass storage device's class driver instance
* to the composite driver.
*
* Input Parameters:
* classdev - The location to return the mass storage class' device
* instance.
*
* Returned Value:
* 0 on success; a negated errno on failure
*
****************************************************************************/
#ifdef CONFIG_USBMSC_COMPOSITE
static int board_mscclassobject(int minor,
FAR struct usbdev_devinfo_s *devinfo,
FAR struct usbdevclass_driver_s **classdev)
{
int ret;
DEBUGASSERT(g_mschandle == NULL);
/* Configure the mass storage device */
uinfo("Configuring with NLUNS=1\n");
ret = usbmsc_configure(1, &g_mschandle);
if (ret < 0)
{
uerr("ERROR: usbmsc_configure failed: %d\n", -ret);
return ret;
}
uinfo("MSC handle=%p\n", g_mschandle);
/* Bind the LUN(s) */
uinfo("Bind LUN=0 to /dev/mmcsd0\n");
ret = usbmsc_bindlun(g_mschandle, "/dev/mmcsd0", 0, 0, 0, false);
if (ret < 0)
{
uerr("ERROR: usbmsc_bindlun failed for LUN 1 at /dev/mmcsd0: %d\n",
ret);
usbmsc_uninitialize(g_mschandle);
g_mschandle = NULL;
return ret;
}
/* Get the mass storage device's class object */
ret = usbmsc_classobject(g_mschandle, devinfo, classdev);
if (ret < 0)
{
uerr("ERROR: usbmsc_classobject failed: %d\n", -ret);
usbmsc_uninitialize(g_mschandle);
g_mschandle = NULL;
}
return ret;
}
#endif
/****************************************************************************
* Name: board_mscuninitialize
*
* Description:
* Un-initialize the USB storage class driver. This is just an application
* specific wrapper aboutn usbmsc_unitialize() that is called form the
* composite device logic.
*
* Input Parameters:
* classdev - The class driver instrance previously give to the composite
* driver by board_mscclassobject().
*
* Returned Value:
* None
*
****************************************************************************/
#ifdef CONFIG_USBMSC_COMPOSITE
static void board_mscuninitialize(FAR struct usbdevclass_driver_s *classdev)
{
DEBUGASSERT(g_mschandle != NULL);
usbmsc_uninitialize(g_mschandle);
g_mschandle = NULL;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_composite_initialize
*
* Description:
* Perform architecture specific initialization of a composite USB device.
*
****************************************************************************/
int board_composite_initialize(int port)
{
return OK;
}
/****************************************************************************
* Name: board_composite_connect
*
* Description:
* Connect the USB composite device on the specified USB device port using
* the specified configuration. The interpretation of the configid is
* board specific.
*
* Input Parameters:
* port - The USB device port.
* configid - The USB composite configuration
*
* Returned Value:
* A non-NULL handle value is returned on success. NULL is returned on
* any failure.
*
****************************************************************************/
FAR void *board_composite_connect(int port, int configid)
{
/* Here we are composing the configuration of the usb composite device.
*
* The standard is to use one CDC/ACM and one USB mass storage device.
*/
if (configid == 0)
{
#ifdef CONFIG_USBMSC_COMPOSITE
struct composite_devdesc_s dev[2];
int ifnobase = 0;
int strbase = COMPOSITE_NSTRIDS;
/* Configure the CDC/ACM device */
/* Ask the cdcacm driver to fill in the constants we didn't
* know here.
*/
cdcacm_get_composite_devdesc(&dev[0]);
/* Overwrite and correct some values... */
/* The callback functions for the CDC/ACM class */
dev[0].classobject = cdcacm_classobject;
dev[0].uninitialize = cdcacm_uninitialize;
/* Interfaces */
dev[0].devinfo.ifnobase = ifnobase; /* Offset to Interface-IDs */
dev[0].minor = 0; /* The minor interface number */
/* Strings */
dev[0].devinfo.strbase = strbase; /* Offset to String Numbers */
/* Endpoints */
dev[0].devinfo.epno[CDCACM_EP_INTIN_IDX] = 3;
dev[0].devinfo.epno[CDCACM_EP_BULKIN_IDX] = 4;
dev[0].devinfo.epno[CDCACM_EP_BULKOUT_IDX] = 5;
/* Count up the base numbers */
ifnobase += dev[0].devinfo.ninterfaces;
strbase += dev[0].devinfo.nstrings;
/* Configure the mass storage device device */
/* Ask the usbmsc driver to fill in the constants we didn't
* know here.
*/
usbmsc_get_composite_devdesc(&dev[1]);
/* Overwrite and correct some values... */
/* The callback functions for the USBMSC class */
dev[1].classobject = board_mscclassobject;
dev[1].uninitialize = board_mscuninitialize;
/* Interfaces */
dev[1].devinfo.ifnobase = ifnobase; /* Offset to Interface-IDs */
dev[1].minor = 0; /* The minor interface number */
/* Strings */
dev[1].devinfo.strbase = strbase; /* Offset to String Numbers */
/* Endpoints */
dev[1].devinfo.epno[USBMSC_EP_BULKIN_IDX] = 1;
dev[1].devinfo.epno[USBMSC_EP_BULKOUT_IDX] = 2;
/* Count up the base numbers */
ifnobase += dev[1].devinfo.ninterfaces;
strbase += dev[1].devinfo.nstrings;
return composite_initialize(2, dev);
#else
return NULL;
#endif
}
/* Configuration with three CDC/ACMs
*
* This configuration can be used e.g. on a samv71-xult. The samv71 has
* 10 Endpoints (EPs). The EPs 0 up to 7 are DMA aware. The EPs 8 and 9
* are not.
*
* In a composite device we need the EP0 as an control Endpoint. Each
* CDC/ACM needs one Interrupt driven and two bulk Endpoints. This is
* why we configure the EPs 7, 8 and 9 to be the IRQ-EPs and the
* EP-Pairs 1/2, 3/4, 5/6 to be the bulk EPs for each device.
*
* This means, that
*
* - the Composite device uses EP0 as the control-Endpoint,
* - the CDC/ACM 0 uses EP7, EP1 and EP2,
* - the CDC/ACM 1 uses EP8, EP3 and EP4,
* - the CDC/ACM 2 uses EP9, EP5 and EP6
*
* as its EP-Configuration.
*/
else if (configid == 1)
{
struct composite_devdesc_s dev[3];
int strbase = COMPOSITE_NSTRIDS;
int ifnobase = 0;
int ia;
for (ia = 0; ia < 3; ia++)
{
/* Ask the cdcacm driver to fill in the
* constants we didn't know here
*/
cdcacm_get_composite_devdesc(&dev[ia]);
/* Overwrite and correct some values... */
/* The callback functions for the CDC/ACM class */
dev[ia].classobject = cdcacm_classobject;
dev[ia].uninitialize = cdcacm_uninitialize;
dev[ia].minor = ia; /* The minor interface number */
/* Interfaces */
dev[ia].devinfo.ifnobase = ifnobase; /* Offset to Interface-IDs */
/* Strings */
dev[ia].devinfo.strbase = strbase; /* Offset to String Numbers */
/* Endpoints */
dev[ia].devinfo.epno[CDCACM_EP_INTIN_IDX] = 7 + ia;
dev[ia].devinfo.epno[CDCACM_EP_BULKIN_IDX] = 1 + ia * 2;
dev[ia].devinfo.epno[CDCACM_EP_BULKOUT_IDX] = 2 + ia * 2;
ifnobase += dev[ia].devinfo.ninterfaces;
strbase += dev[ia].devinfo.nstrings;
}
return composite_initialize(3, dev);
}
else
{
return NULL;
}
}
#endif /* CONFIG_BOARDCTL_USBDEVCTRL && CONFIG_USBDEV_COMPOSITE */
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