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rt-thread/bsp/nuvoton/libraries/m480/rtt_port/drv_usbhost.c

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/**************************************************************************//**
*
* @copyright (C) 2020 Nuvoton Technology Corp. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2020-5-4 CHChen First version
*
******************************************************************************/
#include <rtconfig.h>
#if defined(BSP_USING_USBH) || defined(BSP_USING_HSUSBH)
#include <rtdevice.h>
#include <rthw.h>
#include "NuMicro.h"
#include "usb.h"
#include "usbh_lib.h"
#if !defined(NU_USBHOST_HUB_POLLING_INTERVAL)
#define NU_USBHOST_HUB_POLLING_INTERVAL (100)
#endif
#define NU_MAX_USBH_PORT 2 //USB1.1 + USB2.0 port
#define NU_MAX_USBH_PIPE 16
#define NU_USBH_THREAD_STACK_SIZE 2048
#define NU_MAX_USBH_HUB_PORT_DEV USB_HUB_PORT_NUM
/* Private typedef --------------------------------------------------------------*/
typedef struct nu_port_dev
{
rt_bool_t bRHParent;
UDEV_T *pUDev;
EP_INFO_T *apsEPInfo[NU_MAX_USBH_PIPE];
struct urequest asSetupReq[NU_MAX_USBH_PIPE];
struct rt_completion utr_completion;
int port_num;
rt_bool_t bEnumDone;
} S_NU_PORT_DEV;
typedef struct nu_port_ctrl
{
S_NU_PORT_DEV sRHPortDev;
S_NU_PORT_DEV asHubPortDev[NU_MAX_USBH_HUB_PORT_DEV];
} S_NU_RH_PORT_CTRL;
struct nu_usbh_dev
{
uhcd_t uhcd;
rt_thread_t polling_thread;
S_NU_RH_PORT_CTRL asPortCtrl[NU_MAX_USBH_PORT];
};
/* Private variables ------------------------------------------------------------*/
static struct nu_usbh_dev s_sUSBHDev =
{
.uhcd = RT_NULL,
};
static S_NU_RH_PORT_CTRL *
GetRHPortControlFromPipe(
upipe_t pipe
)
{
uinst_t inst;
int port;
if (pipe->inst->parent_hub->is_roothub)
{
//case: device ---> root hub
inst = pipe->inst;
port = inst->port;
}
else
{
//case: device ---> hub ---> root hub
inst = pipe->inst->parent_hub->self;
port = inst->port;
}
if (port > NU_MAX_USBH_PORT)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_open_pipe ERROR: port index over NU_MAX_USBH_PORT\n"));
return RT_NULL;
}
return &s_sUSBHDev.asPortCtrl[port - 1];;
}
static S_NU_PORT_DEV *
GetPortDevFromPipe(
upipe_t pipe
)
{
S_NU_RH_PORT_CTRL *psRHPortCtrl = GetRHPortControlFromPipe(pipe);
int i;
if (psRHPortCtrl == RT_NULL)
return RT_NULL;
if (pipe->inst->parent_hub->is_roothub)
{
//case: device ---> root hub
return &psRHPortCtrl->sRHPortDev;
}
//case: device ---> hub ---> root hub
for (i = 0 ; i < NU_MAX_USBH_HUB_PORT_DEV; i ++)
{
if (psRHPortCtrl->asHubPortDev[i].port_num == pipe->inst->port)
break;
}
if (i >= NU_MAX_USBH_HUB_PORT_DEV)
return RT_NULL;
return &psRHPortCtrl->asHubPortDev[i];
}
static rt_err_t nu_reset_port(rt_uint8_t port)
{
S_NU_RH_PORT_CTRL *psPortCtrl;
if (port > NU_MAX_USBH_PORT)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_reset_port ERROR: port index over NU_MAX_USBH_PORT\n"));
return RT_EIO;
}
psPortCtrl = &s_sUSBHDev.asPortCtrl[port - 1];
if (psPortCtrl->sRHPortDev.pUDev == NULL)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_reset_port ERROR: udev not found\n"));
return RT_EIO;
}
usbh_reset_port(psPortCtrl->sRHPortDev.pUDev);
return RT_EOK;
}
static EP_INFO_T *GetFreePipe(
S_NU_RH_PORT_CTRL *psPortCtrl,
S_NU_PORT_DEV *psPortDev,
rt_uint8_t *pu8PipeIndex
)
{
rt_uint8_t i;
if (psPortCtrl == NULL)
return NULL;
for (i = 1; i < NU_MAX_USBH_PIPE; i ++)
{
if (psPortDev->apsEPInfo[i] == NULL)
break;
}
if (i >= NU_MAX_USBH_PIPE)
return RT_NULL;
EP_INFO_T *psEPInfo = rt_malloc(sizeof(EP_INFO_T));
psPortDev->apsEPInfo[i] = psEPInfo;
*pu8PipeIndex = i;
return psEPInfo;
}
static void FreePipe(
S_NU_RH_PORT_CTRL *psPortCtrl,
S_NU_PORT_DEV *psPortDev,
rt_uint8_t u8PipeIndex
)
{
if (psPortCtrl == NULL)
return;
if (u8PipeIndex >= NU_MAX_USBH_PIPE)
return;
if (psPortDev->apsEPInfo[u8PipeIndex])
{
rt_free(psPortDev->apsEPInfo[u8PipeIndex]);
psPortDev->apsEPInfo[u8PipeIndex] = RT_NULL;
}
}
static S_NU_PORT_DEV *
AllocateNewUDev(
S_NU_RH_PORT_CTRL *psRHPortCtrl
)
{
int i;
for (i = 0 ; i < NU_MAX_USBH_HUB_PORT_DEV; i ++)
{
if (psRHPortCtrl->asHubPortDev[i].pUDev == NULL)
break;
}
if (i >= NU_MAX_USBH_HUB_PORT_DEV)
return RT_NULL;
psRHPortCtrl->asHubPortDev[i].pUDev = alloc_device();
if (psRHPortCtrl->asHubPortDev[i].pUDev == NULL)
return RT_NULL;
return &psRHPortCtrl->asHubPortDev[i];
}
static rt_err_t nu_open_pipe(upipe_t pipe)
{
S_NU_RH_PORT_CTRL *psPortCtrl;
S_NU_PORT_DEV *psPortDev;
psPortCtrl = GetRHPortControlFromPipe(pipe);
if (psPortCtrl == RT_NULL)
{
return RT_EIO;
}
if (psPortCtrl->sRHPortDev.pUDev == NULL)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_open_pipe ERROR: udev not found\n"));
return RT_EIO;
}
psPortDev = GetPortDevFromPipe(pipe);
if ((psPortDev == NULL) || (psPortDev->pUDev == NULL))
{
//allocate new dev for hub device
psPortDev = AllocateNewUDev(psPortCtrl);
if (psPortDev == RT_NULL)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_open_pipe ERROR: udev allocate failed\n"));
return RT_EIO;
}
if (pipe->inst->speed)
{
psPortDev->pUDev->speed = SPEED_FULL;
}
else
{
psPortDev->pUDev->speed = SPEED_HIGH;
}
psPortDev->pUDev->parent = NULL;
psPortDev->pUDev->hc_driver = psPortCtrl->sRHPortDev.pUDev->hc_driver;
psPortDev->port_num = pipe->inst->port;
psPortDev->pUDev->port_num = pipe->inst->port;
psPortDev->bEnumDone = FALSE;
}
//For ep0 control transfer
if ((pipe->ep.bEndpointAddress & 0x7F) == 0)
{
pipe->pipe_index = 0;
return RT_EOK;
}
EP_INFO_T *psEPInfo = GetFreePipe(psPortCtrl, psPortDev, &pipe->pipe_index);
if (psEPInfo == RT_NULL)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_open_pipe ERROR: get free pipe failed\n"));
return RT_ENOMEM;
}
int pksz;
psEPInfo->bEndpointAddress = pipe->ep.bEndpointAddress;
psEPInfo->bmAttributes = pipe->ep.bmAttributes;
pksz = pipe->ep.wMaxPacketSize;
pksz = (pksz & 0x07ff) * (1 + ((pksz >> 11) & 3));
psEPInfo->wMaxPacketSize = pksz;
psEPInfo->bInterval = pipe->ep.bInterval;
psEPInfo->hw_pipe = NULL;
psEPInfo->bToggle = 0;
return RT_EOK;
}
static rt_err_t nu_close_pipe(upipe_t pipe)
{
S_NU_RH_PORT_CTRL *psPortCtrl;
S_NU_PORT_DEV *psPortDev;
psPortCtrl = GetRHPortControlFromPipe(pipe);
if (psPortCtrl == RT_NULL)
{
return RT_EIO;
}
psPortDev = GetPortDevFromPipe(pipe);
//For ep0 control transfer
if ((pipe->ep.bEndpointAddress & 0x7F) == 0)
{
if ((psPortDev) && (psPortDev->bRHParent == FALSE) && (psPortDev->bEnumDone == TRUE))
{
if (psPortDev->pUDev)
{
int i;
for (i = 0; i < NU_MAX_USBH_PIPE; i++)
{
if (psPortDev->apsEPInfo[i] != NULL)
{
usbh_quit_xfer(psPortDev->pUDev, psPortDev->apsEPInfo[i]);
}
}
free_device(psPortDev->pUDev);
psPortDev->pUDev = NULL;
}
}
}
if (psPortDev != NULL)
{
FreePipe(psPortCtrl, psPortDev, pipe->pipe_index);
}
return RT_EOK;
}
static int nu_ctrl_xfer(
S_NU_PORT_DEV *psPortDev,
struct urequest *psSetup,
void *buffer,
int timeouts
)
{
uint32_t xfer_len;
int ret;
ret = usbh_ctrl_xfer(psPortDev->pUDev, psSetup->request_type, psSetup->bRequest, psSetup->wValue, psSetup->wIndex, psSetup->wLength, buffer, &xfer_len, timeouts * 10);
if (ret < 0)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_ctrl_xfer ERROR: xfer failed %d\n", ret));
return ret;
}
if (xfer_len != psSetup->wLength)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_ctrl_xfer ERROR: xfer length %d %d\n", psSetup->wLength, xfer_len));
}
if ((psSetup->bRequest == USB_REQ_SET_ADDRESS) && ((psSetup->request_type & 0x60) == REQ_TYPE_STD_DEV))
psPortDev->pUDev->dev_num = psSetup->wValue;
if ((psSetup->bRequest == USB_REQ_SET_CONFIGURATION) && ((psSetup->request_type & 0x60) == REQ_TYPE_STD_DEV))
{
psPortDev->pUDev->cur_conf = psSetup->wValue;
psPortDev->bEnumDone = TRUE;
}
return xfer_len;
}
static int nu_bulk_xfer(
S_NU_PORT_DEV *psPortDev,
UTR_T *psUTR,
int timeouts
)
{
int ret;
ret = usbh_bulk_xfer(psUTR);
if (ret < 0)
return ret;
//wait transfer done
rt_completion_wait(&(psPortDev->utr_completion), timeouts);
return 0;
}
static int nu_int_xfer(
upipe_t pipe,
S_NU_PORT_DEV *psPortDev,
UTR_T *psUTR,
int timeouts
)
{
int ret;
int retry = 3;
while (retry > 0)
{
ret = usbh_int_xfer(psUTR);
if (ret == 0)
break;
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_int_xfer ERROR: failed to submit interrupt request\n"));
rt_thread_delay((pipe->ep.bInterval * RT_TICK_PER_SECOND / 1000) > 0 ? (pipe->ep.bInterval * RT_TICK_PER_SECOND / 1000) : 1);
retry --;
}
if (ret < 0)
return ret;
return 0;
}
static void xfer_done_cb(UTR_T *psUTR)
{
S_NU_PORT_DEV *psPortDev = (S_NU_PORT_DEV *)psUTR->context;
//transfer done, signal utr_completion
rt_completion_done(&(psPortDev->utr_completion));
}
static void int_xfer_done_cb(UTR_T *psUTR)
{
upipe_t pipe = (upipe_t)psUTR->context;
if (psUTR->status != 0)
{
rt_kprintf("Interrupt xfer failed %d\n", psUTR->status);
free_utr(psUTR);
return;
}
if (pipe->callback != RT_NULL)
{
struct uhost_msg msg;
msg.type = USB_MSG_CALLBACK;
msg.content.cb.function = pipe->callback;
msg.content.cb.context = pipe;
rt_usbh_event_signal(&msg);
}
free_utr(psUTR);
}
static int nu_pipe_xfer(upipe_t pipe, rt_uint8_t token, void *buffer, int nbytes, int timeouts)
{
S_NU_RH_PORT_CTRL *psPortCtrl;
S_NU_PORT_DEV *psPortDev;
psPortCtrl = GetRHPortControlFromPipe(pipe);
if (psPortCtrl == RT_NULL)
{
return RT_EIO;
}
psPortDev = GetPortDevFromPipe(pipe);
if (psPortDev->pUDev == NULL)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_pipe_xfer ERROR: udev not found\n"));
return -RT_ERROR;
}
//ctrl xfer
if (pipe->ep.bmAttributes == USB_EP_ATTR_CONTROL)
{
if (token == USBH_PID_SETUP)
{
struct urequest *psSetup;
psSetup = (struct urequest *)buffer;
if (psSetup->request_type & USB_REQ_TYPE_DIR_IN)
{
//Store setup request
rt_memcpy(&psPortCtrl->asHubPortDev->asSetupReq[pipe->pipe_index], psSetup, sizeof(struct urequest));
}
else
{
//Trigger USBHostLib Ctril_Xfer
nu_ctrl_xfer(psPortDev, psSetup, NULL, timeouts);
}
return nbytes;
}
else
{
//token == USBH_PID_DATA
if (buffer == RT_NULL)
return nbytes;
if ((pipe->ep.bEndpointAddress & USB_DIR_MASK) == USB_DIR_IN)
{
//Trigger USBHostLib Ctril_Xfer
nu_ctrl_xfer(psPortDev, &psPortCtrl->asHubPortDev->asSetupReq[pipe->pipe_index], buffer, timeouts);
}
else
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_pipe_xfer ERROR: can not handle ctrl xfer case: buffer!=NULL and USB_DIR_OUT\n"));
}
return nbytes;
}
}
//others xfer
rt_completion_init(&(psPortDev->utr_completion));
//setup UTR
UTR_T *psUTR;
int i32XferLen;
psUTR = alloc_utr(psPortDev->pUDev);
if (!psUTR)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_pipe_xfer ERROR: unable alloc UTR\n"));
return -(RT_ERROR);
}
psUTR->ep = psPortDev->apsEPInfo[pipe->pipe_index];
psUTR->buff = buffer;
psUTR->data_len = nbytes;
psUTR->xfer_len = 0;
psUTR->func = xfer_done_cb;
psUTR->context = psPortDev;
psUTR->bIsTransferDone = 0;
psUTR->status = 0;
if (pipe->ep.bmAttributes == USB_EP_ATTR_BULK)
{
if (nu_bulk_xfer(psPortDev, psUTR, timeouts) < 0)
{
free_utr(psUTR);
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_pipe_xfer ERROR: bulk transfer failed\n"));
return -(RT_ERROR);
}
}
if (pipe->ep.bmAttributes == USB_EP_ATTR_INT)
{
psUTR->func = int_xfer_done_cb;
psUTR->context = pipe;
if (nu_int_xfer(pipe, psPortDev, psUTR, timeouts) < 0)
{
free_utr(psUTR);
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_pipe_xfer ERROR: int transfer failed\n"));
return -(RT_ERROR);
}
return nbytes;
}
//TODO: ISO transfer
if (pipe->ep.bmAttributes == USB_EP_ATTR_ISOC)
{
free_utr(psUTR);
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_pipe_xfer ERROR: isoc transfer not support\n"));
return -1;
}
if (psUTR->bIsTransferDone == 0)
{
//Timeout
RT_DEBUG_LOG(RT_DEBUG_USB, ("nu_pipe_xfer ERROR: timeout\n"));
pipe->status = UPIPE_STATUS_ERROR;
usbh_quit_utr(psUTR);
}
else
{
// Transfer Done. Get status
if (psUTR->status == 0)
{
pipe->status = UPIPE_STATUS_OK;
}
else if (psUTR->status == USBH_ERR_STALL)
{
pipe->status = UPIPE_STATUS_STALL;
}
else
{
pipe->status = UPIPE_STATUS_ERROR;
}
}
i32XferLen = psUTR->xfer_len;
free_utr(psUTR);
//Call callback
if (pipe->callback != RT_NULL)
{
struct uhost_msg msg;
msg.type = USB_MSG_CALLBACK;
msg.content.cb.function = pipe->callback;
msg.content.cb.context = pipe->user_data;
rt_usbh_event_signal(&msg);
}
if (pipe->status != UPIPE_STATUS_OK)
return -(RT_ERROR);
if ((pipe->ep.bEndpointAddress & USB_DIR_MASK) == USB_DIR_IN)
{
return i32XferLen;
}
else if ((pipe->ep.bEndpointAddress & USB_DIR_MASK) == USB_DIR_OUT)
{
return i32XferLen;
}
return nbytes;
}
//Pooling USB root hub status task
static void nu_usbh_rh_thread_entry(void *parameter)
{
while (1)
{
usbh_polling_root_hubs();
rt_thread_mdelay(NU_USBHOST_HUB_POLLING_INTERVAL);
}
}
static void nu_hcd_connect_callback(
struct udev_t *udev,
int param
)
{
int i;
int port_index;
S_NU_RH_PORT_CTRL *psPortCtrl;
for (i = 0; i < NU_MAX_USBH_PORT; i++)
{
psPortCtrl = &s_sUSBHDev.asPortCtrl[i];
if (psPortCtrl->sRHPortDev.pUDev == NULL)
break;
}
if (i >= NU_MAX_USBH_PORT)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("ERROR: port connect slot is full\n"));
return;
}
port_index = i + 1;
psPortCtrl->sRHPortDev.pUDev = udev;
psPortCtrl->sRHPortDev.bRHParent = TRUE;
RT_DEBUG_LOG(RT_DEBUG_USB, ("usb connected\n"));
if (udev->speed == SPEED_HIGH)
rt_usbh_root_hub_connect_handler(s_sUSBHDev.uhcd, port_index, RT_TRUE);
else
rt_usbh_root_hub_connect_handler(s_sUSBHDev.uhcd, port_index, RT_FALSE);
}
static void nu_hcd_disconnect_callback(
struct udev_t *udev,
int param
)
{
int i;
int port_index;
S_NU_RH_PORT_CTRL *psPortCtrl;
for (i = 0; i < NU_MAX_USBH_PORT; i++)
{
psPortCtrl = &s_sUSBHDev.asPortCtrl[i];
if (psPortCtrl->sRHPortDev.pUDev == udev)
break;
}
if (i >= NU_MAX_USBH_PORT)
{
RT_DEBUG_LOG(RT_DEBUG_USB, ("ERROR: udev not found\n"));
return;
}
port_index = i + 1;
for (i = 0; i < NU_MAX_USBH_PIPE; i++)
{
if (psPortCtrl->sRHPortDev.apsEPInfo[i] != NULL)
{
usbh_quit_xfer(psPortCtrl->sRHPortDev.pUDev, psPortCtrl->sRHPortDev.apsEPInfo[i]);
}
}
psPortCtrl->sRHPortDev.pUDev = NULL;
RT_DEBUG_LOG(RT_DEBUG_USB, ("usb disconnect\n"));
rt_usbh_root_hub_disconnect_handler(s_sUSBHDev.uhcd, port_index);
}
/* USB host operations -----------------------------------------------------------*/
static struct uhcd_ops nu_uhcd_ops =
{
nu_reset_port,
nu_pipe_xfer,
nu_open_pipe,
nu_close_pipe,
};
static rt_err_t nu_hcd_init(rt_device_t device)
{
struct nu_usbh_dev *pNuUSBHDev = (struct nu_usbh_dev *)device;
usbh_core_init();
//install connect/disconnect callback
usbh_install_conn_callback(nu_hcd_connect_callback, nu_hcd_disconnect_callback);
usbh_polling_root_hubs();
//create thread for polling usbh port status
/* create usb hub thread */
pNuUSBHDev->polling_thread = rt_thread_create("usbh_drv", nu_usbh_rh_thread_entry, RT_NULL,
NU_USBH_THREAD_STACK_SIZE, 8, 20);
if (pNuUSBHDev->polling_thread != RT_NULL)
{
/* startup usb host thread */
rt_thread_startup(pNuUSBHDev->polling_thread);
}
else
{
return -(RT_EEMPTY);
}
return RT_EOK;
}
/* global function for USB host library -----------------------------*/
uint32_t usbh_get_ticks(void)
{
return rt_tick_get();
}
void usbh_delay_ms(int msec)
{
rt_thread_mdelay(msec);
}
uint32_t usbh_tick_from_millisecond(uint32_t msec)
{
return rt_tick_from_millisecond(msec);
}
#if defined(RT_USING_PM)
/* device pm suspend() entry. */
static int usbhost_pm_suspend(const struct rt_device *device, rt_uint8_t mode)
{
rt_err_t result;
struct nu_usbh_dev *pNuUSBHDev = (struct nu_usbh_dev *)device;
RT_ASSERT(pNuUSBHDev != RT_NULL);
switch (mode)
{
case PM_SLEEP_MODE_LIGHT:
case PM_SLEEP_MODE_DEEP:
pNuUSBHDev->polling_thread->stat = RT_THREAD_READY;
result = rt_thread_suspend(pNuUSBHDev->polling_thread);
RT_ASSERT(result == RT_EOK);
break;
default:
break;
}
return (int)RT_EOK;
}
/* device pm resume() entry. */
static void usbhost_pm_resume(const struct rt_device *device, rt_uint8_t mode)
{
rt_err_t result;
struct nu_usbh_dev *pNuUSBHDev = (struct nu_usbh_dev *)device;
RT_ASSERT(pNuUSBHDev != RT_NULL);
switch (mode)
{
case PM_SLEEP_MODE_LIGHT:
case PM_SLEEP_MODE_DEEP:
result = rt_thread_resume(pNuUSBHDev->polling_thread);
RT_ASSERT(result == RT_EOK);
break;
default:
break;
}
}
static struct rt_device_pm_ops device_pm_ops =
{
.suspend = usbhost_pm_suspend,
.resume = usbhost_pm_resume,
.frequency_change = RT_NULL
};
#endif
int nu_usbh_register(void)
{
rt_err_t res = -RT_ERROR;
#if !defined(BSP_USING_HSOTG)
SYS_UnlockReg();
#if defined(BSP_USING_HSUSBH)
/* Set USB Host role */
SYS->USBPHY = (SYS->USBPHY & ~SYS_USBPHY_HSUSBROLE_Msk) | (0x1u << SYS_USBPHY_HSUSBROLE_Pos);
SYS->USBPHY |= SYS_USBPHY_HSUSBEN_Msk | SYS_USBPHY_SBO_Msk;
rt_thread_delay(20);
SYS->USBPHY |= SYS_USBPHY_HSUSBACT_Msk;
#endif
#if defined(BSP_USING_USBH)
/* Set USB Host role */
SYS->USBPHY = (SYS->USBPHY & ~SYS_USBPHY_USBROLE_Msk) | (0x1u << SYS_USBPHY_USBROLE_Pos);
SYS->USBPHY |= SYS_USBPHY_USBEN_Msk | SYS_USBPHY_SBO_Msk ;
#endif
SYS_LockReg();
#endif
rt_memset(&s_sUSBHDev, 0x0, sizeof(struct nu_usbh_dev));
uhcd_t uhcd = (uhcd_t)rt_malloc(sizeof(struct uhcd));
RT_ASSERT(res != RT_NULL);
rt_memset((void *)uhcd, 0, sizeof(struct uhcd));
uhcd->parent.type = RT_Device_Class_USBHost;
uhcd->parent.init = nu_hcd_init;
uhcd->parent.user_data = &s_sUSBHDev;
uhcd->ops = &nu_uhcd_ops;
uhcd->num_ports = NU_MAX_USBH_PORT;
s_sUSBHDev.uhcd = uhcd;
res = rt_device_register(&uhcd->parent, "usbh", RT_DEVICE_FLAG_DEACTIVATE);
RT_ASSERT(res == RT_EOK);
/*initialize the usb host function */
res = rt_usb_host_init();
RT_ASSERT(res == RT_EOK);
#if defined(RT_USING_PM)
rt_pm_device_register(&uhcd->parent, &device_pm_ops);
#endif
return RT_EOK;
}
INIT_DEVICE_EXPORT(nu_usbh_register);
#endif
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