[PATCH v2 2/4] hw/char/pl011: implement a reset method

[Evgeny Iakovlev <eiakovlev@linux.microsoft.com>]

PL011 currently lacks a reset method. Implement it.

Signed-off-by: Evgeny Iakovlev <eiakovlev@linux.microsoft.com>
---
 hw/char/pl011.c | 31 ++++++++++++++++++++++++++-----
 1 file changed, 26 insertions(+), 5 deletions(-)

diff --git a/hw/char/pl011.c b/hw/char/pl011.c
index 329cc6926d..404d52a3b8 100644
--- a/hw/char/pl011.c
+++ b/hw/char/pl011.c
@@ -397,11 +397,6 @@ static void pl011_init(Object *obj)
     s->clk = qdev_init_clock_in(DEVICE(obj), "clk", pl011_clock_update, s,
                                 ClockUpdate);
 
-    s->read_trigger = 1;
-    s->ifl = 0x12;
-    s->cr = 0x300;
-    s->flags = 0x90;
-
     s->id = pl011_id_arm;
 }
 
@@ -413,11 +408,37 @@ static void pl011_realize(DeviceState *dev, Error **errp)
                              pl011_event, NULL, s, NULL, true);
 }
 
+static void pl011_reset(DeviceState *dev)
+{
+    PL011State *s = PL011(dev);
+    int i;
+
+    s->lcr = 0;
+    s->rsr = 0;
+    s->dmacr = 0;
+    s->int_enabled = 0;
+    s->int_level = 0;
+    s->ilpr = 0;
+    s->ibrd = 0;
+    s->fbrd = 0;
+    s->read_pos = 0;
+    s->read_count = 0;
+    s->read_trigger = 1;
+    s->ifl = 0x12;
+    s->cr = 0x300;
+    s->flags = 0x90;
+
+    for (i = 0; i < ARRAY_SIZE(s->irq); i++) {
+        qemu_irq_lower(s->irq[i]);
+    }
+}
+
 static void pl011_class_init(ObjectClass *oc, void *data)
 {
     DeviceClass *dc = DEVICE_CLASS(oc);
 
     dc->realize = pl011_realize;
+    dc->reset = pl011_reset;
     dc->vmsd = &vmstate_pl011;
     device_class_set_props(dc, pl011_properties);
 }
-- 
2.34.1