From: Peter Crosthwaite <peter.crosthwa...@xilinx.com>
An API similar to the existing qdev_get_gpio_in() except gets outputs.
Useful for:
1: Implementing lightweight devices that don't want to keep pointers
to their own GPIOs. They can get their GPIO pointers at runtime from
QOM using this API.
2: testing or debugging code which may wish to override the
hardware generated value of of a GPIO with a user specified value
(E.G. interrupt injection).
Signed-off-by: Peter Crosthwaite <peter.crosthwa...@xilinx.com>
Signed-off-by: Alistair Francis <alistair.fran...@xilinx.com>
---
hw/core/qdev.c | 12 ++++++++++++
include/hw/qdev-core.h | 2 ++
2 files changed, 14 insertions(+)
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index 655f5d5..57ce4e7 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -489,6 +489,18 @@ qemu_irq qdev_get_gpio_in(DeviceState *dev, int n)
return qdev_get_gpio_in_named(dev, NULL, n);
}
+qemu_irq qdev_get_gpio_out_named(DeviceState *dev, const char *name, int n)
+{
+ char *propname = g_strdup_printf("%s[%d]",
+ name ? name : "unnamed-gpio-out", n);
+ return (qemu_irq)object_property_get_link(OBJECT(dev), propname, NULL);
+}
+
+qemu_irq qdev_get_gpio_out(DeviceState *dev, int n)
+{
+ return qdev_get_gpio_out_named(dev, NULL, n);
+}
+
void qdev_connect_gpio_out_named(DeviceState *dev, const char *name, int n,
qemu_irq pin)
{
diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
index abcdee8..0a09b8a 100644
--- a/include/hw/qdev-core.h
+++ b/include/hw/qdev-core.h
@@ -287,6 +287,8 @@ bool qdev_machine_modified(void);
qemu_irq qdev_get_gpio_in(DeviceState *dev, int n);
qemu_irq qdev_get_gpio_in_named(DeviceState *dev, const char *name, int n);
+qemu_irq qdev_get_gpio_out(DeviceState *dev, int n);
+qemu_irq qdev_get_gpio_out_named(DeviceState *dev, const char *name, int n);
void qdev_connect_gpio_out(DeviceState *dev, int n, qemu_irq pin);
void qdev_connect_gpio_out_named(DeviceState *dev, const char *name, int n,
--
2.5.0
