xen/arm: New callback in uart_driver to get device tree interrupt structure

The existing function serial_irq doesn't allow to retrieve if the interrupt
is edge or level trigger.

Use this function to routes IRQs for all serial ports which Xen is using
to Xen.

Signed-off-by: Julien Grall <julien.grall@linaro.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/xen/include/xen/serial.h b/xen/include/xen/serial.h
index b932ed4eb4..5de517136b 100644
--- a/xen/include/xen/serial.h
+++ b/xen/include/xen/serial.h
@@ -71,6 +71,8 @@ struct uart_driver {
     int  (*getc)(struct serial_port *, char *);
     /* Get IRQ number for this port's serial line: returns -1 if none. */
     int  (*irq)(struct serial_port *);
+    /* Get IRQ device node for this port's serial line: returns NULL if none. */
+    const struct dt_irq *(*dt_irq_get)(struct serial_port *);
 };
 
 /* 'Serial handles' are composed from the following fields. */
@@ -120,6 +122,9 @@ void serial_end_log_everything(int handle);
 /* Return irq number for specified serial port (identified by index). */
 int serial_irq(int idx);
 
+/* Return irq device node for specified serial port (identified by index). */
+const struct dt_irq *serial_dt_irq(int idx);
+
 /* Serial suspend/resume. */
 void serial_suspend(void);
 void serial_resume(void);