From: Andreas Dannenberg <dannenb...@ti.com>
Add a reset operations function pointer to support querying the current
status of a reset control.
Reviewed-by: Tom Rini <tr...@konsulko.com>
Signed-off-by: Andreas Dannenberg <dannenb...@ti.com>
Signed-off-by: Lokesh Vutla <lokeshvu...@ti.com>
---
drivers/reset/reset-uclass.c | 9 +++++++++
include/reset-uclass.h | 8 ++++++++
include/reset.h | 14 ++++++++++++++
3 files changed, 31 insertions(+)
diff --git a/drivers/reset/reset-uclass.c b/drivers/reset/reset-uclass.c
index 3899537635..89e39c6b5a 100644
--- a/drivers/reset/reset-uclass.c
+++ b/drivers/reset/reset-uclass.c
@@ -192,6 +192,15 @@ int reset_deassert_bulk(struct reset_ctl_bulk *bulk)
return 0;
}
+int reset_status(struct reset_ctl *reset_ctl)
+{
+ struct reset_ops *ops = reset_dev_ops(reset_ctl->dev);
+
+ debug("%s(reset_ctl=%p)\n", __func__, reset_ctl);
+
+ return ops->rst_status(reset_ctl);
+}
+
int reset_release_all(struct reset_ctl *reset_ctl, int count)
{
int i, ret;
diff --git a/include/reset-uclass.h b/include/reset-uclass.h
index c17d738b31..7b5cc3cb3b 100644
--- a/include/reset-uclass.h
+++ b/include/reset-uclass.h
@@ -76,6 +76,14 @@ struct reset_ops {
* @return 0 if OK, or a negative error code.
*/
int (*rst_deassert)(struct reset_ctl *reset_ctl);
+ /**
+ * rst_status - Check reset signal status.
+ *
+ * @reset_ctl: The reset signal to check.
+ * @return 0 if deasserted, positive if asserted, or a negative
+ * error code.
+ */
+ int (*rst_status)(struct reset_ctl *reset_ctl);
};
#endif
diff --git a/include/reset.h b/include/reset.h
index a7bbc1c331..34ebb096dd 100644
--- a/include/reset.h
+++ b/include/reset.h
@@ -206,6 +206,15 @@ int reset_deassert(struct reset_ctl *reset_ctl);
*/
int reset_deassert_bulk(struct reset_ctl_bulk *bulk);
+/**
+ * rst_status - Check reset signal status.
+ *
+ * @reset_ctl: The reset signal to check.
+ * @return 0 if deasserted, positive if asserted, or a negative
+ * error code.
+ */
+int reset_status(struct reset_ctl *reset_ctl);
+
/**
* reset_release_all - Assert/Free an array of previously requested resets.
*
@@ -279,6 +288,11 @@ static inline int reset_deassert_bulk(struct
reset_ctl_bulk *bulk)
return 0;
}
+static inline int reset_status(struct reset_ctl *reset_ctl)
+{
+ return -ENOTSUPP;
+}
+
static inline int reset_release_all(struct reset_ctl *reset_ctl, int count)
{
return 0;
--
2.18.0
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