[PATCH 46/50] lasips2: switch over from update_irq() function to PS2 device gpio

[Mark Cave-Ayland]

Add a qdev gpio input in lasips2_init() by taking the existing 
lasips2_port_set_irq()
function, updating it accordingly and then renaming to lasips2_set_irq(). Use 
these
new qdev gpio inputs to wire up the PS2 keyboard and mouse devices.

At the same time set update_irq() and update_arg to NULL in ps2_kbd_init() and
ps2_mouse_init() to ensure that any accidental attempt to use the legacy 
update_irq()
function will cause a NULL pointer dereference.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayl...@ilande.co.uk>
---
 hw/input/lasips2.c | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/hw/input/lasips2.c b/hw/input/lasips2.c
index 644cf70955..12ff95a05f 100644
--- a/hw/input/lasips2.c
+++ b/hw/input/lasips2.c
@@ -117,6 +117,9 @@ static const char *lasips2_write_reg_name(uint64_t addr)
     }
 }
 
+#define LASIPS2_KBD_INPUT_IRQ      0
+#define LASIPS2_MOUSE_INPUT_IRQ    1
+
 static void lasips2_update_irq(LASIPS2State *s)
 {
     trace_lasips2_intr(s->kbd.irq | s->mouse.irq);
@@ -237,9 +240,10 @@ static const MemoryRegionOps lasips2_reg_ops = {
     .endianness = DEVICE_NATIVE_ENDIAN,
 };
 
-static void lasips2_port_set_irq(void *opaque, int level)
+static void lasips2_set_irq(void *opaque, int n, int level)
 {
-    LASIPS2Port *port = opaque;
+    LASIPS2State *s = LASIPS2(opaque);
+    LASIPS2Port *port = (n ? &s->mouse : &s->kbd);
 
     port->irq = level;
     lasips2_update_irq(port->parent);
@@ -263,8 +267,12 @@ static void lasips2_realize(DeviceState *dev, Error **errp)
 
     vmstate_register(NULL, s->base, &vmstate_lasips2, s);
 
-    s->kbd.dev = ps2_kbd_init(lasips2_port_set_irq, &s->kbd);
-    s->mouse.dev = ps2_mouse_init(lasips2_port_set_irq, &s->mouse);
+    s->kbd.dev = ps2_kbd_init(NULL, NULL);
+    qdev_connect_gpio_out(DEVICE(s->kbd.dev), PS2_DEVICE_IRQ,
+                          qdev_get_gpio_in(dev, LASIPS2_KBD_INPUT_IRQ));
+    s->mouse.dev = ps2_mouse_init(NULL, NULL);
+    qdev_connect_gpio_out(DEVICE(s->mouse.dev), PS2_DEVICE_IRQ,
+                          qdev_get_gpio_in(dev, LASIPS2_MOUSE_INPUT_IRQ));
 }
 
 static void lasips2_init(Object *obj)
@@ -285,6 +293,7 @@ static void lasips2_init(Object *obj)
     sysbus_init_mmio(SYS_BUS_DEVICE(obj), &s->mouse.reg);
 
     qdev_init_gpio_out(DEVICE(obj), &s->irq, 1);
+    qdev_init_gpio_in(DEVICE(obj), lasips2_set_irq, 2);
 }
 
 static Property lasips2_properties[] = {
-- 
2.20.1