Added interrupt polling support for atusb.

- atrf/fw/include/atspi/ep0.h enum atspi_requests), atrf/fw/atspi/ep0.c
  (my_setup): new command ATSPI_POLL_INT to poll IRQ_RF
- atrf/fw/atspi/ep0.c (my_setup): ATSPI_BUILD sent one byte too many
- tools/lib/atusb.c (atusd_interrupt, atusb_driver): implemented interrupt
  polling
- tools/lib/atusd.c: added section title for the RF interrupt function

tools/lib/atusb.c

@@ -187,6 +187,29 @@ static int atusb_buf_read(void *dsc, void *buf, int size)
 }
 
 
+/* ----- RF interrupt ------------------------------------------------------ */
+
+
+static int atusd_interrupt(void *dsc)
+{
+	usb_dev_handle *dev = dsc;
+	uint8_t buf;
+	int res;
+
+	if (error)
+		return -1;
+	
+	res = usb_control_msg(dev, FROM_DEV, ATSPI_POLL_INT, 0, 0,
+	    (void *) &buf, 1, 1000);
+	if (res < 0) {
+		fprintf(stderr, "ATSPI_POLL_INT: %d\n", res);
+		error = 1;
+	}
+
+	return buf;
+}
+
+
 /* ----- driver interface -------------------------------------------------- */
 
 
@@ -202,4 +225,5 @@ struct atspi_driver atusb_driver = {
 	.reg_read	= atusb_reg_read,
 	.buf_write	= atusb_buf_write,
 	.buf_read	= atusb_buf_read,
+	.interrupt	= atusd_interrupt,
 };

tools/lib/atusd.c

@@ -300,6 +300,9 @@ static int atusd_buf_read(void *handle, void *buf, int size)
 }
 
 
+/* ----- RF interrupt ------------------------------------------------------ */
+
+
 static int atusd_interrupt(void *handle)
 {
         struct atusd_dsc *dsc = handle;