#include <common.h>
#include <dm.h>
+#include <dm/lists.h>
+#include <dm/device-internal.h>
#include <errno.h>
#include <timer.h>
* tick, and no timer interrupt.
*/
-int timer_get_count(struct udevice *dev, u64 *count)
+int notrace timer_get_count(struct udevice *dev, u64 *count)
{
const struct timer_ops *ops = device_get_ops(dev);
return ops->get_count(dev, count);
}
-unsigned long timer_get_rate(struct udevice *dev)
+unsigned long notrace timer_get_rate(struct udevice *dev)
{
- struct timer_dev_priv *uc_priv = dev_get_uclass_priv(dev);
+ struct timer_dev_priv *uc_priv = dev->uclass_priv;
return uc_priv->clock_rate;
}
return 0;
}
+static int timer_post_probe(struct udevice *dev)
+{
+ struct timer_dev_priv *uc_priv = dev_get_uclass_priv(dev);
+
+ if (!uc_priv->clock_rate)
+ return -EINVAL;
+
+ return 0;
+}
+
u64 timer_conv_64(u32 count)
{
/* increment tbh if tbl has rolled over */
return ((u64)gd->timebase_h << 32) | gd->timebase_l;
}
+int notrace dm_timer_init(void)
+{
+ const void *blob = gd->fdt_blob;
+ struct udevice *dev = NULL;
+ int node;
+ int ret;
+
+ if (gd->timer)
+ return 0;
+
+ /* Check for a chosen timer to be used for tick */
+ node = fdtdec_get_chosen_node(blob, "tick-timer");
+ if (node < 0) {
+ /* No chosen timer, trying first available timer */
+ ret = uclass_first_device_err(UCLASS_TIMER, &dev);
+ if (ret)
+ return ret;
+ } else {
+ if (uclass_get_device_by_of_offset(UCLASS_TIMER, node, &dev)) {
+ /*
+ * If the timer is not marked to be bound before
+ * relocation, bind it anyway.
+ */
+ if (node > 0 &&
+ !lists_bind_fdt(gd->dm_root, blob, node, &dev)) {
+ ret = device_probe(dev);
+ if (ret)
+ return ret;
+ }
+ }
+ }
+
+ if (dev) {
+ gd->timer = dev;
+ return 0;
+ }
+
+ return -ENODEV;
+}
+
UCLASS_DRIVER(timer) = {
.id = UCLASS_TIMER,
.name = "timer",
.pre_probe = timer_pre_probe,
+ .flags = DM_UC_FLAG_SEQ_ALIAS,
+ .post_probe = timer_post_probe,
.per_device_auto_alloc_size = sizeof(struct timer_dev_priv),
};