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[Qemu-commits] [COMMIT 7e57f04] usb-serial: implement break event.
From: |
Anthony Liguori |
Subject: |
[Qemu-commits] [COMMIT 7e57f04] usb-serial: implement break event. |
Date: |
Fri, 22 May 2009 15:52:53 -0000 |
From: Jason Wessel <address@hidden>
Implement the serial break via usb serial.
The second data byte in ftdi status packet contains the break status.
The values were already defined in usb-serial.c so it was a matter of
making use of the event_trigger to form a urb to send over to the host
controller with the serial break status set.
This was tested against a linux development image which enables sysrq
via a serial break on the ftdi usb console.
Signed-off-by: Jason Wessel <address@hidden>
diff --git a/hw/usb-serial.c b/hw/usb-serial.c
index be231f9..19870a5 100644
--- a/hw/usb-serial.c
+++ b/hw/usb-serial.c
@@ -445,7 +445,15 @@ static int usb_serial_handle_data(USBDevice *dev,
USBPacket *p)
}
*data++ = usb_get_modem_lines(s) | 1;
/* We do not have the uart details */
- *data++ = 0;
+ /* handle serial break */
+ if (s->event_trigger && s->event_trigger & FTDI_BI) {
+ s->event_trigger &= ~FTDI_BI;
+ *data++ = FTDI_BI;
+ ret = 2;
+ break;
+ } else {
+ *data++ = 0;
+ }
len -= 2;
if (len > s->recv_used)
len = s->recv_used;
@@ -505,7 +513,7 @@ static void usb_serial_event(void *opaque, int event)
switch (event) {
case CHR_EVENT_BREAK:
- /* TODO: Send Break to USB */
+ s->event_trigger |= FTDI_BI;
break;
case CHR_EVENT_FOCUS:
break;
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