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[Qemu-devel] [RFC PATCH 2/6] qdev: add power/clock gating control on bus
From: |
Damien Hedde |
Subject: |
[Qemu-devel] [RFC PATCH 2/6] qdev: add power/clock gating control on bus tree |
Date: |
Fri, 27 Jul 2018 16:37:21 +0200 |
Add functions [qdev|qbus]_set_[power|clock]_all(_fn).
Theses allow to control power and clock gating along a bus hierarchy.
Signed-off-by: Damien Hedde <address@hidden>
---
include/hw/qdev-core.h | 20 +++++++++++++++++
hw/core/qdev.c | 51 ++++++++++++++++++++++++++++++++++++++++++
2 files changed, 71 insertions(+)
diff --git a/include/hw/qdev-core.h b/include/hw/qdev-core.h
index 659287e185..607c367738 100644
--- a/include/hw/qdev-core.h
+++ b/include/hw/qdev-core.h
@@ -464,4 +464,24 @@ void device_set_power(DeviceState *dev, bool en);
*/
void device_set_clock(DeviceState *dev, bool en);
+/**
+ * qdev/qbus_set_power_all(_fn)
+ * Enable/Disable the power of a tree starting
+ * at given device or bus
+ */
+void qdev_set_power_all(DeviceState *dev, bool en);
+void qdev_set_power_all_fn(void *opaque, bool en);
+void qbus_set_power_all(BusState *bus, bool en);
+void qbus_set_power_all_fn(void *opaque, bool en);
+
+/**
+ * qdev/qbus_set_clock_all(_fn)
+ * Enable/Disable the clock of a tree starting
+ * at given device or bus
+ */
+void qdev_set_clock_all(DeviceState *dev, bool en);
+void qdev_set_clock_all_fn(void *opaque, bool en);
+void qbus_set_clock_all(BusState *bus, bool en);
+void qbus_set_clock_all_fn(void *opaque, bool en);
+
#endif
diff --git a/hw/core/qdev.c b/hw/core/qdev.c
index bb6d36eab9..24b90bd45f 100644
--- a/hw/core/qdev.c
+++ b/hw/core/qdev.c
@@ -1138,6 +1138,57 @@ void device_set_clock(DeviceState *dev, bool en)
}
}
+static int qdev_set_power_one(DeviceState *dev, void *opaque)
+{
+ device_set_power(dev, *((bool *)opaque));
+ return 0;
+}
+
+void qdev_set_power_all(DeviceState *dev, bool en)
+{
+ qdev_walk_children(dev, NULL, NULL, qdev_set_power_one, NULL, &en);
+}
+
+void qdev_set_power_all_fn(void *opaque, bool en)
+{
+ qdev_set_power_all(DEVICE(opaque), en);
+}
+
+void qbus_set_power_all(BusState *bus, bool en)
+{
+ qbus_walk_children(bus, NULL, NULL, qdev_set_power_one, NULL, &en);
+}
+
+void qbus_set_power_all_fn(void *opaque, bool en)
+{
+ qbus_set_power_all(BUS(opaque), en);
+}
+
+static int qdev_set_clock_one(DeviceState *dev, void *opaque)
+{
+ device_set_clock(dev, *((bool *)opaque));
+ return 0;
+}
+
+void qdev_set_clock_all(DeviceState *dev, bool en)
+{
+ qdev_walk_children(dev, NULL, NULL, qdev_set_clock_one, NULL, &en);
+}
+
+void qdev_set_clock_all_fn(void *opaque, bool en)
+{
+ qdev_set_clock_all(DEVICE(opaque), en);
+}
+
+void qbus_set_clock_all(BusState *bus, bool en)
+{
+ qbus_walk_children(bus, NULL, NULL, qdev_set_clock_one, NULL, &en);
+}
+
+void qbus_set_clock_all_fn(void *opaque, bool en)
+{
+ qbus_set_clock_all(BUS(opaque), en);
+}
Object *qdev_get_machine(void)
{
--
2.18.0
- [Qemu-devel] [RFC PATCH 0/6] Clock and power gating support, Damien Hedde, 2018/07/27
- [Qemu-devel] [RFC PATCH 3/6] sysbus: Specialize gating_update to enable/disable memory regions, Damien Hedde, 2018/07/27
- [Qemu-devel] [RFC PATCH 6/6] xilinx_zynq: add uart clock gating support, Damien Hedde, 2018/07/27
- [Qemu-devel] [RFC PATCH 2/6] qdev: add power/clock gating control on bus tree,
Damien Hedde <=
- [Qemu-devel] [RFC PATCH 4/6] cadence_uart: add clock/power gating support, Damien Hedde, 2018/07/27
- [Qemu-devel] [RFC PATCH 5/6] zynq_slcr: add uart clock gating and soft reset support, Damien Hedde, 2018/07/27
- [Qemu-devel] [RFC PATCH 1/6] qdev: add a power and clock gating support, Damien Hedde, 2018/07/27
- Re: [Qemu-devel] [RFC PATCH 0/6] Clock and power gating support, Peter Maydell, 2018/07/27