Implement dcd_edpt_close_all for NXP khci
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		@@ -347,10 +347,26 @@ bool dcd_edpt_open(uint8_t rhport, tusb_desc_endpoint_t const * ep_desc)
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  return true;
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}
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void dcd_edpt_close_all (uint8_t rhport)
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void dcd_edpt_close_all(uint8_t rhport)
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{
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  (void) rhport;
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  // TODO implement dcd_edpt_close_all()
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  const unsigned ie = NVIC_GetEnableIRQ(USB0_IRQn);
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  NVIC_DisableIRQ(USB0_IRQn);
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  for (unsigned i = 1; i < 16; ++i) {
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    KHCI->ENDPOINT[i].ENDPT = 0;
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  }
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  if (ie) NVIC_EnableIRQ(USB0_IRQn);
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  buffer_descriptor_t *bd = _dcd.bdt[1][0];
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  for (unsigned i = 2; i < sizeof(_dcd.bdt)/sizeof(*bd); ++i, ++bd) {
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    bd->head = 0;
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  }
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  endpoint_state_t *ep = &_dcd.endpoint[1][0];
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  for (unsigned i = 2; i < sizeof(_dcd.endpoint)/sizeof(*ep); ++i, ++ep) {
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    /* Clear except the odd */
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    ep->max_packet_size = 0;
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    ep->length          = 0;
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    ep->remaining       = 0;
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  }
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}
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void dcd_edpt_close(uint8_t rhport, uint8_t ep_addr)
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@@ -372,6 +388,7 @@ void dcd_edpt_close(uint8_t rhport, uint8_t ep_addr)
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bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer, uint16_t total_bytes)
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{
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  (void) rhport;
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  const unsigned ie  = NVIC_GetEnableIRQ(USB0_IRQn);
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  NVIC_DisableIRQ(USB0_IRQn);
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  const unsigned epn = ep_addr & 0xFu;
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  const unsigned dir = (ep_addr & TUSB_DIR_IN_MASK) ? TUSB_DIR_IN : TUSB_DIR_OUT;
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@@ -380,6 +397,7 @@ bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer, uint16_t to
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  if (bd->own) {
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    TU_LOG1("DCD XFER fail %x %d %lx %lx\r\n", ep_addr, total_bytes, ep->state, bd->head);
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    if (ie) NVIC_EnableIRQ(USB0_IRQn);
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    return false; /* The last transfer has not completed */
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  }
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  ep->length    = total_bytes;
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@@ -398,7 +416,7 @@ bool dcd_edpt_xfer(uint8_t rhport, uint8_t ep_addr, uint8_t* buffer, uint16_t to
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  bd->addr      = buffer;
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  __DSB();
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  bd->own  = 1; /* the own bit must set after addr */
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  NVIC_EnableIRQ(USB0_IRQn);
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  if (ie) NVIC_EnableIRQ(USB0_IRQn);
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  return true;
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}
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