Enable event processing engine to handle LDC events
Signed-off-by: Jagannathan Raman <jag.raman@xxxxxxxxxx>
Reviewed-by: Liam Merwick <liam.merwick@xxxxxxxxxx>
Reviewed-by: Shannon Nelson <shannon.nelson@xxxxxxxxxx>
---
drivers/tty/vcc.c | 31 +++++++++++++++++++++++++++++++
1 files changed, 31 insertions(+), 0 deletions(-)
diff --git a/drivers/tty/vcc.c b/drivers/tty/vcc.c
index 84a8dd7..8f4afdb 100644
--- a/drivers/tty/vcc.c
+++ b/drivers/tty/vcc.c
@@ -443,8 +443,39 @@ static void vcc_tx_timer(unsigned long index)
vcc_put(port, false);
}
+/**
+ * vcc_event() - LDC event processing engine
+ * @arg: VCC private data
+ * @event: LDC event
+ *
+ * Handles LDC events for VCC
+ */
static void vcc_event(void *arg, int event)
{
+ struct vcc_port *port = (struct vcc_port *)arg;
+ struct vio_driver_state *vio = &port->vio;
+ unsigned long flags;
+ int rv;
+
+ spin_lock_irqsave(&port->lock, flags);
+
+ switch (event) {
+ case LDC_EVENT_RESET:
+ case LDC_EVENT_UP:
+ vio_link_state_change(vio, event);
+ break;
+
+ case LDC_EVENT_DATA_READY:
+ rv = vcc_ldc_read(port);
+ if (rv == -ECONNRESET)
+ vio_conn_reset(vio);
+ break;
+
+ default:
+ pr_err("VCC: unexpected LDC event(%d)\n", event);
+ }
+
+ spin_unlock_irqrestore(&port->lock, flags);
}
static struct ldc_channel_config vcc_ldc_cfg = {
--
1.7.1
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