drivers: usb_device: smartbond: Fix EP OUT after resume

When device was resumed from sleep OUT endpoints were most
likely not enabled due to condition that checked pending transfer.
Configured OUT endpoints should be enabled (ready for RX)
if they were enabled by interfaces.

Now separate bit field enabled is added and check to
see if OUT endpoint should be ready for reception after
sleep is done.

Signed-off-by: Jerzy Kasenberg <[email protected]>

Author: kasjer

drivers/usb/device/usb_dc_smartbond.c

@@ -124,6 +124,7 @@ struct smartbond_ep_state {
 	uint8_t data1 : 1;              /** DATA0/1 toggle bit 1 DATA1 is expected or transmitted */
 	uint8_t stall : 1;              /** Endpoint is stalled */
 	uint8_t iso : 1;                /** ISO endpoint */
+	uint8_t enabled : 1;            /** Endpoint is enabled */
 	uint8_t ep_addr;                /** EP address */
 	struct smartbond_ep_reg_set *regs;
 };
@@ -768,7 +769,7 @@ static void handle_alt_ev(void)
 			/* Re-enable reception of endpoint with pending transfer */
 			for (int ep_num = 1; ep_num < EP_MAX; ++ep_num) {
 				ep_state = usb_dc_get_ep_out_state(ep_num);
-				if (ep_state->total_len > ep_state->transferred) {
+				if (ep_state->enabled) {
 					start_rx_packet(ep_state);
 				}
 			}
@@ -1037,6 +1038,7 @@ int usb_dc_ep_disable(const uint8_t ep)
 		return -EINVAL;
 	}
 
+	ep_state->enabled = 0;
 	if (ep_state->ep_addr == EP0_IN) {
 		REG_SET_BIT(USB_TXC0_REG, USB_IGN_IN);
 	} else if (ep_state->ep_addr == EP0_OUT) {
@@ -1288,6 +1290,7 @@ int usb_dc_ep_enable(const uint8_t ep)
 		REG_SET_BIT(USB_MAMSK_REG, USB_M_TX_EV);
 		ep_state->regs->epc_in |= USB_USB_EPC2_REG_USB_EP_EN_Msk;
 	}
+	ep_state->enabled = 1;
 
 	return 0;
 }