#ifndef _RESET_H
#define _RESET_H
+#include <dm/ofnode.h>
#include <linux/errno.h>
/**
*
* @dev: The device which implements the reset signal.
* @id: The reset signal ID within the provider.
+ * @data: An optional data field for scenarios where a single integer ID is not
+ * sufficient. If used, it can be populated through an .of_xlate op and
+ * processed during the various reset ops.
+ * @polarity: An optional polarity field for drivers that support
+ * different reset polarities.
*
- * Currently, the reset API assumes that a single integer ID is enough to
- * identify and configure any reset signal for any reset provider. If this
- * assumption becomes invalid in the future, the struct could be expanded to
+ * Should additional information to identify and configure any reset signal
+ * for any provider be required in the future, the struct could be expanded to
* either (a) add more fields to allow reset providers to store additional
* information, or (b) replace the id field with an opaque pointer, which the
* provider would dynamically allocated during its .of_xlate op, and process
struct reset_ctl {
struct udevice *dev;
/*
- * Written by of_xlate. We assume a single id is enough for now. In the
- * future, we might add more fields here.
+ * Written by of_xlate. In the future, we might add more fields here.
*/
unsigned long id;
+ unsigned long data;
+ unsigned long polarity;
};
/**
int reset_get_by_index(struct udevice *dev, int index,
struct reset_ctl *reset_ctl);
+/**
+ * reset_get_by_index_nodev - Get/request a reset signal by integer index
+ * without a device.
+ *
+ * This is a version of reset_get_by_index() that does not use a device.
+ *
+ * @node: The client ofnode.
+ * @index: The index of the reset signal to request, within the client's
+ * list of reset signals.
+ * @reset_ctl A pointer to a reset control struct to initialize.
+ * @return 0 if OK, or a negative error code.
+ */
+int reset_get_by_index_nodev(ofnode node, int index,
+ struct reset_ctl *reset_ctl);
+
/**
* reset_get_bulk - Get/request all reset signals of a device.
*
}
#endif
+/**
+ * reset_valid() - check if reset is valid
+ *
+ * @reset_ctl: the reset to check
+ * @return TRUE if valid, or FALSE
+ */
+static inline bool reset_valid(struct reset_ctl *reset_ctl)
+{
+ return !!reset_ctl->dev;
+}
+
#endif