1 files changed, 77 insertions, 0 deletions

diff --git a/include/linux/siox.h b/include/linux/siox.h
new file mode 100644
index 000000000000..d79624e83134
--- /dev/null
+++ b/include/linux/siox.h
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2015 Pengutronix, Uwe Kleine-König <kernel@pengutronix.de>
+ *
+ * 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.
+ */
+
+#include <linux/device.h>
+
+#define to_siox_device(_dev)    container_of((_dev), struct siox_device, dev)
+struct siox_device {
+        struct list_head node; /* node in smaster->devices */
+        struct siox_master *smaster;
+        struct device dev;
+
+        const char *type;
+        size_t inbytes;
+        size_t outbytes;
+        u8 statustype;
+
+        u8 status_read_clean;
+        u8 status_written;
+        u8 status_written_lastcycle;
+        bool connected;
+
+        /* statistics */
+        unsigned int watchdog_errors;
+        unsigned int status_errors;
+
+        struct kernfs_node *status_errors_kn;
+        struct kernfs_node *watchdog_kn;
+        struct kernfs_node *watchdog_errors_kn;
+        struct kernfs_node *connected_kn;
+};
+
+bool siox_device_synced(struct siox_device *sdevice);
+bool siox_device_connected(struct siox_device *sdevice);
+
+struct siox_driver {
+        int (*probe)(struct siox_device *sdevice);
+        int (*remove)(struct siox_device *sdevice);
+        void (*shutdown)(struct siox_device *sdevice);
+
+        /*
+         * buf is big enough to hold sdev->inbytes - 1 bytes, the status byte
+         * is in the scope of the framework.
+         */
+        int (*set_data)(struct siox_device *sdevice, u8 status, u8 buf[]);
+        /*
+         * buf is big enough to hold sdev->outbytes - 1 bytes, the status byte
+         * is in the scope of the framework
+         */
+        int (*get_data)(struct siox_device *sdevice, const u8 buf[]);
+
+        struct device_driver driver;
+};
+
+static inline struct siox_driver *to_siox_driver(struct device_driver *driver)
+{
+        if (driver)
+                return container_of(driver, struct siox_driver, driver);
+        else
+                return NULL;
+}
+
+int __siox_driver_register(struct siox_driver *sdriver, struct module *owner);
+
+static inline int siox_driver_register(struct siox_driver *sdriver)
+{
+        return __siox_driver_register(sdriver, THIS_MODULE);
+}
+
+static inline void siox_driver_unregister(struct siox_driver *sdriver)
+{
+        return driver_unregister(&sdriver->driver);
+}