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-rw-r--r--include/linux/pse-pd/pse.h67
1 files changed, 67 insertions, 0 deletions
diff --git a/include/linux/pse-pd/pse.h b/include/linux/pse-pd/pse.h
new file mode 100644
index 000000000000..3ba787a48b15
--- /dev/null
+++ b/include/linux/pse-pd/pse.h
@@ -0,0 +1,67 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+// Copyright (c) 2022 Pengutronix, Oleksij Rempel <kernel@pengutronix.de>
+ */
+#ifndef _LINUX_PSE_CONTROLLER_H
+#define _LINUX_PSE_CONTROLLER_H
+
+#include <linux/ethtool.h>
+#include <linux/list.h>
+#include <uapi/linux/ethtool.h>
+
+struct module;
+struct device_node;
+struct of_phandle_args;
+struct pse_control;
+
+/**
+ * struct pse_controller_dev - PSE controller entity that might
+ * provide multiple PSE controls
+ * @ops: a pointer to device specific struct pse_controller_ops
+ * @owner: kernel module of the PSE controller driver
+ * @list: internal list of PSE controller devices
+ * @pse_control_head: head of internal list of requested PSE controls
+ * @dev: corresponding driver model device struct
+ * @of_pse_n_cells: number of cells in PSE line specifiers
+ * @of_xlate: translation function to translate from specifier as found in the
+ * device tree to id as given to the PSE control ops
+ * @nr_lines: number of PSE controls in this controller device
+ * @lock: Mutex for serialization access to the PSE controller
+ */
+struct pse_controller_dev {
+ const struct pse_controller_ops *ops;
+ struct module *owner;
+ struct list_head list;
+ struct list_head pse_control_head;
+ struct device *dev;
+ int of_pse_n_cells;
+ int (*of_xlate)(struct pse_controller_dev *pcdev,
+ const struct of_phandle_args *pse_spec);
+ unsigned int nr_lines;
+ struct mutex lock;
+};
+
+#if IS_ENABLED(CONFIG_PSE_CONTROLLER)
+int pse_controller_register(struct pse_controller_dev *pcdev);
+void pse_controller_unregister(struct pse_controller_dev *pcdev);
+struct device;
+int devm_pse_controller_register(struct device *dev,
+ struct pse_controller_dev *pcdev);
+
+struct pse_control *of_pse_control_get(struct device_node *node);
+void pse_control_put(struct pse_control *psec);
+
+#else
+
+static inline struct pse_control *of_pse_control_get(struct device_node *node)
+{
+ return ERR_PTR(-ENOENT);
+}
+
+static inline void pse_control_put(struct pse_control *psec)
+{
+}
+
+#endif
+
+#endif