sysreset: Add a way to find the last reset
We have a method to return the last reset as a string for humans, but not
a method that allows it to be used programmatically. Add a new method that
returns the last reset as an enum.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/sysreset/sysreset-uclass.c b/drivers/sysreset/sysreset-uclass.c
index e38814b..ad831c7 100644
--- a/drivers/sysreset/sysreset-uclass.c
+++ b/drivers/sysreset/sysreset-uclass.c
@@ -36,6 +36,16 @@
return ops->get_status(dev, buf, size);
}
+int sysreset_get_last(struct udevice *dev)
+{
+ struct sysreset_ops *ops = sysreset_get_ops(dev);
+
+ if (!ops->get_last)
+ return -ENOSYS;
+
+ return ops->get_last(dev);
+}
+
int sysreset_walk(enum sysreset_t type)
{
struct udevice *dev;
@@ -55,6 +65,26 @@
return ret;
}
+int sysreset_get_last_walk(void)
+{
+ struct udevice *dev;
+ int value = -ENOENT;
+
+ for (uclass_first_device(UCLASS_SYSRESET, &dev);
+ dev;
+ uclass_next_device(&dev)) {
+ int ret;
+
+ ret = sysreset_get_last(dev);
+ if (ret >= 0) {
+ value = ret;
+ break;
+ }
+ }
+
+ return value;
+}
+
void sysreset_walk_halt(enum sysreset_t type)
{
int ret;