Hi Damien,
On 07/27/2018 11:37 AM, Damien Hedde wrote:
> 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 <damien.he...@greensocs.com>
> ---
> 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);
I think we don't need the _fn() functions, most of the current codebase
directly use DEVICE(x) or BUS(x) to casts.
> +
> +/**
> + * 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)
> {
>
