diff --git a/README b/README index f9c1978c3b..294f0c1dce 100644 --- a/README +++ b/README @@ -901,6 +901,9 @@ The following options need to be configured: CONFIG_USB_CONFIG for differential drivers: 0x00001000 for single ended drivers: 0x00005000 + CFG_USB_EVENT_POLL + May be defined to allow interrupt polling + instead of using asynchronous interrupts - USB Device: Define the below if you wish to use the USB console. diff --git a/common/usb_kbd.c b/common/usb_kbd.c index 56c21660fa..aec558ad20 100644 --- a/common/usb_kbd.c +++ b/common/usb_kbd.c @@ -129,7 +129,11 @@ static int usb_kbd_testc(void) static int usb_kbd_getc(void) { char c; - while(usb_in_pointer==usb_out_pointer); + while(usb_in_pointer==usb_out_pointer) { +#ifdef CFG_USB_EVENT_POLL + usb_event_poll(); +#endif + } if((usb_out_pointer+1)==USB_KBD_BUFFER_LEN) usb_out_pointer=0; else diff --git a/include/usb.h b/include/usb.h index 504ccc40fc..4e1539fa88 100644 --- a/include/usb.h +++ b/include/usb.h @@ -180,6 +180,7 @@ int submit_control_msg(struct usb_device *dev, unsigned long pipe, void *buffer, int transfer_len,struct devrequest *setup); int submit_int_msg(struct usb_device *dev, unsigned long pipe, void *buffer, int transfer_len, int interval); +void usb_event_poll(void); /* Defines */ #define USB_UHCI_VEND_ID 0x8086