Count number of reset phandles available with the device node
to know the resets a given device has.
Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx>
Signed-off-by: Vivek Gautam <vivek.gautam@xxxxxxxxxxxxxx>
---
Based on torvald's master branch.
include/linux/reset.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/include/linux/reset.h b/include/linux/reset.h
index 5daff15722d3..88f63a640153 100644
--- a/include/linux/reset.h
+++ b/include/linux/reset.h
@@ -2,6 +2,7 @@
#define _LINUX_RESET_H_
#include <linux/device.h>
+#include <linux/of.h>
struct reset_control;
@@ -234,6 +235,21 @@ static inline struct reset_control *of_reset_control_get_shared_by_index(
}
/**
+ * of_reset_control_get_count - Count number of resets available with a device
+ * @node: device to be reset by the controller
+ */
+static inline unsigned int of_reset_control_get_count(struct device_node *node)
+{
+ int count;
+
+ count = of_count_phandle_with_args(node, "resets", "#reset-cells");
+ if (count < 0)
+ return 0;
+
+ return count;
+}
+
+/**
* devm_reset_control_get_exclusive - resource managed
* reset_control_get_exclusive()
* @dev: device to be reset by the controller
--
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