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implement remote wakeup for stm synopsys

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This commit is contained in:
hathach 2021-09-08 00:57:07 +07:00
parent a54a974fa5
commit 4ac136d81d
1 changed files with 30 additions and 8 deletions
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38
src/portable/st/synopsys/dcd_synopsys.c
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@ -555,13 +555,31 @@ void dcd_set_address (uint8_t rhport, uint8_t dev_addr)
dcd_edpt_xfer(rhport, tu_edpt_addr(0, TUSB_DIR_IN), NULL, 0);
}
static void remote_wakeup_delay(void)
{
// try to delay for 1 ms
uint32_t count = SystemCoreClock / 1000;
while(count--) __NOP();
}
void dcd_remote_wakeup(uint8_t rhport)
{
(void) rhport;
// TODO must manually clear this bit after 1-15 ms
// USB_OTG_DeviceTypeDef * dev = DEVICE_BASE(rhport);
// dev->DCTL |= USB_OTG_DCTL_RWUSIG;
USB_OTG_GlobalTypeDef * usb_otg = GLOBAL_BASE(rhport);
USB_OTG_DeviceTypeDef * dev = DEVICE_BASE(rhport);
// set remote wakeup
dev->DCTL |= USB_OTG_DCTL_RWUSIG;
// enable SOF to detect bus resume
usb_otg->GINTSTS = USB_OTG_GINTSTS_SOF;
usb_otg->GINTMSK |= USB_OTG_GINTMSK_SOFM;
// Per specs: remote wakeup signal bit must be clear within 1-15ms
remote_wakeup_delay();
dev->DCTL &= ~USB_OTG_DCTL_RWUSIG;
}
void dcd_connect(uint8_t rhport)
@ -1100,7 +1118,7 @@ void dcd_int_handler(uint8_t rhport)
USB_OTG_OUTEndpointTypeDef * out_ep = OUT_EP_BASE(rhport);
USB_OTG_INEndpointTypeDef * in_ep = IN_EP_BASE(rhport);
uint32_t int_status = usb_otg->GINTSTS;
uint32_t const int_status = usb_otg->GINTSTS & usb_otg->GINTMSK;
if(int_status & USB_OTG_GINTSTS_USBRST)
{
@ -1133,6 +1151,9 @@ void dcd_int_handler(uint8_t rhport)
dcd_event_bus_signal(rhport, DCD_EVENT_RESUME, true);
}
// TODO check USB_OTG_GINTSTS_DISCINT for disconnect detection
// if(int_status & USB_OTG_GINTSTS_DISCINT)
if(int_status & USB_OTG_GINTSTS_OTGINT)
{
// OTG INT bit is read-only
@ -1146,13 +1167,15 @@ void dcd_int_handler(uint8_t rhport)
usb_otg->GOTGINT = otg_int;
}
#if USE_SOF
if(int_status & USB_OTG_GINTSTS_SOF)
{
usb_otg->GINTSTS = USB_OTG_GINTSTS_SOF;
// Disable SOF interrupt since currently only used for remote wakeup detection
usb_otg->GINTMSK &= ~USB_OTG_GINTMSK_SOFM;
dcd_event_bus_signal(rhport, DCD_EVENT_SOF, true);
}
#endif
// RxFIFO non-empty interrupt handling.
if(int_status & USB_OTG_GINTSTS_RXFLVL)
@ -1166,8 +1189,7 @@ void dcd_int_handler(uint8_t rhport)
do
{
handle_rxflvl_ints(rhport, out_ep);
int_status = usb_otg->GINTSTS;
} while(int_status & USB_OTG_GINTSTS_RXFLVL);
} while(usb_otg->GINTSTS & USB_OTG_GINTSTS_RXFLVL);
// Manage RX FIFO size
if (_out_ep_closed)