1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.h b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.h
new file mode 100644
index 000000000000..caa6fdf25bb1
--- /dev/null
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_bus.h
@@ -0,0 +1,57 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (c) 2023 Ideas On Board Oy
+ */
+
+#ifndef _VCHIQ_DEVICE_H
+#define _VCHIQ_DEVICE_H
+
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+
+struct vchiq_device {
+	struct device dev;
+};
+
+struct vchiq_driver {
+	int		(*probe)(struct vchiq_device *device);
+	void		(*remove)(struct vchiq_device *device);
+	int		(*resume)(struct vchiq_device *device);
+	int		(*suspend)(struct vchiq_device *device,
+				   pm_message_t state);
+
+	const struct vchiq_device_id *id_table;
+	struct device_driver driver;
+};
+
+static inline struct vchiq_device *to_vchiq_device(struct device *d)
+{
+	return container_of(d, struct vchiq_device, dev);
+}
+
+static inline struct vchiq_driver *to_vchiq_driver(struct device_driver *d)
+{
+	return container_of(d, struct vchiq_driver, driver);
+}
+
+extern struct bus_type vchiq_bus_type;
+
+struct vchiq_device *
+vchiq_device_register(struct device *parent, const char *name);
+void vchiq_device_unregister(struct vchiq_device *dev);
+
+int vchiq_driver_register(struct vchiq_driver *vchiq_drv);
+void vchiq_driver_unregister(struct vchiq_driver *vchiq_drv);
+
+/**
+ * module_vchiq_driver() - Helper macro for registering a vchiq driver
+ * @__vchiq_driver: vchiq driver struct
+ *
+ * Helper macro for vchiq drivers which do not do anything special in
+ * module init/exit. This eliminates a lot of boilerplate. Each module may only
+ * use this macro once, and calling it replaces module_init() and module_exit()
+ */
+#define module_vchiq_driver(__vchiq_driver) \
+	module_driver(__vchiq_driver, vchiq_driver_register, vchiq_driver_unregister)
+
+#endif /* _VCHIQ_DEVICE_H */