diff options
Diffstat (limited to 'src/portable')
| -rw-r--r-- | src/portable/synopsys/dwc2/hcd_dwc2.c | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/src/portable/synopsys/dwc2/hcd_dwc2.c b/src/portable/synopsys/dwc2/hcd_dwc2.c index 53349f7f9..53bc0b059 100644 --- a/src/portable/synopsys/dwc2/hcd_dwc2.c +++ b/src/portable/synopsys/dwc2/hcd_dwc2.c @@ -106,6 +106,7 @@ typedef struct { typedef struct { hcd_xfer_t xfer[DWC2_CHANNEL_COUNT_MAX]; hcd_endpoint_t edpt[CFG_TUH_DWC2_ENDPOINT_MAX]; + bool attach_debounce; // if true: wait for the debounce delay before issuing new attach events } hcd_data_t; hcd_data_t _hcd_data; @@ -421,6 +422,11 @@ uint32_t hcd_frame_number(uint8_t rhport) { // Get the current connect status of roothub port bool hcd_port_connect_status(uint8_t rhport) { + // this is called from enum_new_device() - after the debouncing delays + if (_hcd_data.attach_debounce) { + _hcd_data.attach_debounce = false; // allow new attach events again + } + dwc2_regs_t* dwc2 = DWC2_REG(rhport); return dwc2->hprt & HPRT_CONN_STATUS; } @@ -1321,7 +1327,10 @@ static void handle_hprt_irq(uint8_t rhport, bool in_isr) { hprt |= HPRT_CONN_DETECT; if (hprt_bm.conn_status) { - hcd_event_device_attach(rhport, in_isr); + if (!_hcd_data.attach_debounce) { + _hcd_data.attach_debounce = true; // block new attach events until the debounce delay is over + hcd_event_device_attach(rhport, in_isr); + } } } @@ -1387,8 +1396,13 @@ void hcd_int_handler(uint8_t rhport, bool in_isr) { if (gintsts & GINTSTS_DISCINT) { // Device disconnected dwc2->gintsts = GINTSTS_DISCINT; - if (!(dwc2->hprt & HPRT_CONN_STATUS)) { - hcd_event_device_remove(rhport, in_isr); + + // ignore device removal if attach debounce is active + // it will evaluate the port status after the debounce delay + if (!_hcd_data.attach_debounce) { + if (!(dwc2->hprt & HPRT_CONN_STATUS)) { + hcd_event_device_remove(rhport, in_isr); + } } } |