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authorJason Wessel <jason.wessel@windriver.com>2009-05-18 10:00:26 -0500
committerAnthony Liguori <aliguori@us.ibm.com>2009-05-22 10:50:34 -0500
commit7e57f0493a661e57c5a2572a8818d35267482922 (patch)
tree6bf34f08b0c6b0621869f2e80c5384591cdf6a0e
parent0928a95ffe91862938cee997c9e30602fa7884ab (diff)
usb-serial: implement break event.
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 <jason.wessel@windriver.com>
-rw-r--r--hw/usb-serial.c12
1 files changed, 10 insertions, 2 deletions
diff --git a/hw/usb-serial.c b/hw/usb-serial.c
index be231f91ed..19870a53cc 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;