From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 include/linux/serio.h | 150 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 150 insertions(+)
 create mode 100644 include/linux/serio.h

(limited to 'include/linux/serio.h')

diff --git a/include/linux/serio.h b/include/linux/serio.h
new file mode 100644
index 000000000..9f779c7a2
--- /dev/null
+++ b/include/linux/serio.h
@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 1999-2002 Vojtech Pavlik
+*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+#ifndef _SERIO_H
+#define _SERIO_H
+
+
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/mutex.h>
+#include <linux/device.h>
+#include <linux/mod_devicetable.h>
+#include <uapi/linux/serio.h>
+
+struct serio {
+	void *port_data;
+
+	char name[32];
+	char phys[32];
+	char firmware_id[128];
+
+	bool manual_bind;
+
+	struct serio_device_id id;
+
+	spinlock_t lock;		/* protects critical sections from port's interrupt handler */
+
+	int (*write)(struct serio *, unsigned char);
+	int (*open)(struct serio *);
+	void (*close)(struct serio *);
+	int (*start)(struct serio *);
+	void (*stop)(struct serio *);
+
+	struct serio *parent;
+	struct list_head child_node;	/* Entry in parent->children list */
+	struct list_head children;
+	unsigned int depth;		/* level of nesting in serio hierarchy */
+
+	struct serio_driver *drv;	/* accessed from interrupt, must be protected by serio->lock and serio->sem */
+	struct mutex drv_mutex;		/* protects serio->drv so attributes can pin driver */
+
+	struct device dev;
+
+	struct list_head node;
+};
+#define to_serio_port(d)	container_of(d, struct serio, dev)
+
+struct serio_driver {
+	const char *description;
+
+	const struct serio_device_id *id_table;
+	bool manual_bind;
+
+	void (*write_wakeup)(struct serio *);
+	irqreturn_t (*interrupt)(struct serio *, unsigned char, unsigned int);
+	int  (*connect)(struct serio *, struct serio_driver *drv);
+	int  (*reconnect)(struct serio *);
+	void (*disconnect)(struct serio *);
+	void (*cleanup)(struct serio *);
+
+	struct device_driver driver;
+};
+#define to_serio_driver(d)	container_of(d, struct serio_driver, driver)
+
+int serio_open(struct serio *serio, struct serio_driver *drv);
+void serio_close(struct serio *serio);
+void serio_rescan(struct serio *serio);
+void serio_reconnect(struct serio *serio);
+irqreturn_t serio_interrupt(struct serio *serio, unsigned char data, unsigned int flags);
+
+void __serio_register_port(struct serio *serio, struct module *owner);
+
+/* use a define to avoid include chaining to get THIS_MODULE */
+#define serio_register_port(serio) \
+	__serio_register_port(serio, THIS_MODULE)
+
+void serio_unregister_port(struct serio *serio);
+void serio_unregister_child_port(struct serio *serio);
+
+int __must_check __serio_register_driver(struct serio_driver *drv,
+				struct module *owner, const char *mod_name);
+
+/* use a define to avoid include chaining to get THIS_MODULE & friends */
+#define serio_register_driver(drv) \
+	__serio_register_driver(drv, THIS_MODULE, KBUILD_MODNAME)
+
+void serio_unregister_driver(struct serio_driver *drv);
+
+/**
+ * module_serio_driver() - Helper macro for registering a serio driver
+ * @__serio_driver: serio_driver struct
+ *
+ * Helper macro for serio 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_serio_driver(__serio_driver) \
+	module_driver(__serio_driver, serio_register_driver, \
+		       serio_unregister_driver)
+
+static inline int serio_write(struct serio *serio, unsigned char data)
+{
+	if (serio->write)
+		return serio->write(serio, data);
+	else
+		return -1;
+}
+
+static inline void serio_drv_write_wakeup(struct serio *serio)
+{
+	if (serio->drv && serio->drv->write_wakeup)
+		serio->drv->write_wakeup(serio);
+}
+
+/*
+ * Use the following functions to manipulate serio's per-port
+ * driver-specific data.
+ */
+static inline void *serio_get_drvdata(struct serio *serio)
+{
+	return dev_get_drvdata(&serio->dev);
+}
+
+static inline void serio_set_drvdata(struct serio *serio, void *data)
+{
+	dev_set_drvdata(&serio->dev, data);
+}
+
+/*
+ * Use the following functions to protect critical sections in
+ * driver code from port's interrupt handler
+ */
+static inline void serio_pause_rx(struct serio *serio)
+{
+	spin_lock_irq(&serio->lock);
+}
+
+static inline void serio_continue_rx(struct serio *serio)
+{
+	spin_unlock_irq(&serio->lock);
+}
+
+#endif
-- 
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