From: KONRAD Frederic <fred.kon...@greensocs.com>
This introduces a clock init array to ease the clock tree construction.
Signed-off-by: KONRAD Frederic <fred.kon...@greensocs.com>
V2 -> V3:
* s/QEMUClock/qemu_clk/g
---
include/qemu/qemu-clock.h | 23 +++++++++++++++++++++++
qemu-clock.c | 17 +++++++++++++++++
2 files changed, 40 insertions(+)
diff --git a/include/qemu/qemu-clock.h b/include/qemu/qemu-clock.h
index f80de56..1c57df4 100644
--- a/include/qemu/qemu-clock.h
+++ b/include/qemu/qemu-clock.h
@@ -49,6 +49,29 @@ struct ClkList {
QLIST_ENTRY(ClkList) node;
};
+typedef struct ClockInitElement {
+ const char *name; /* Name to give to the clock. */
+ size_t offset; /* Offset of the qemu_clk field in the object. */
+ QEMUClkRateUpdateCallback *cb;
+} ClockInitElement;
+
+#define DEVICE_CLOCK(_state, _field, _cb) { \
+ .name = #_field, \
+ .offset = offsetof(_state, _field), \
+ .cb = _cb \
+}
+
+#define DEVICE_CLOCK_END() { \
+ .name = NULL \
+}
+
+/**
+ * qemu_clk_init_device:
+ * @obj: the Object which need to be initialized.
+ * @array: the array of ClockInitElement to be used.
+ */
+void qemu_clk_init_device(Object *obj, ClockInitElement *array);
+
/**
* qemu_clk_device_add_clock:
* @dev: the device on which the clock needs to be added.
diff --git a/qemu-clock.c b/qemu-clock.c
index 24719e2..8f342f6 100644
--- a/qemu-clock.c
+++ b/qemu-clock.c
@@ -26,6 +26,7 @@
#include "hw/hw.h"
#include "qemu/log.h"
#include "qapi/error.h"
+#include "hw/qdev-core.h"
#ifndef DEBUG_QEMU_CLOCK
#define DEBUG_QEMU_CLOCK 0
@@ -37,6 +38,22 @@
} \
} while (0);
+void qemu_clk_init_device(Object *obj, ClockInitElement *array)
+{
+ QEMUClock **cur = NULL;
+
+ while (array->name != NULL) {
+ DPRINTF("init clock named %s\n", array->name);
+ cur = (((void *)obj) + array->offset);
+ *cur = QEMU_CLOCK(object_new(TYPE_CLOCK));
+ qemu_clk_device_add_clock(DEVICE(obj), *cur, array->name);
+ if (array->cb) {
+ qemu_clk_set_callback(*cur, array->cb, obj);
+ }
+ array++;
+ }
+}
+
void qemu_clk_refresh(QEMUClock *clk)
{
qemu_clk_update_rate(clk, clk->ref_rate);
--
1.8.3.1
