greybus: uart framework added, doesn't build
diff --git a/drivers/staging/greybus/uart-gb.c b/drivers/staging/greybus/uart-gb.c
new file mode 100644
index 0000000..9527307
--- /dev/null
+++ b/drivers/staging/greybus/uart-gb.c
@@ -0,0 +1,118 @@
+/*
+ * I2C bridge driver for the Greybus "generic" I2C module.
+ *
+ * Copyright 2014 Google Inc.
+ *
+ * Released under the GPLv2 only.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/serial.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include "greybus.h"
+
+#define GB_TTY_MAJOR 180 /* FIXME use a real number!!! */
+
+struct gb_tty {
+ struct tty_port port;
+ struct greybus_device *gdev;
+ int cport;
+ unsigned int minor;
+ unsigned char clocal;
+ // FIXME locking!!!
+};
+
+static const struct greybus_device_id id_table[] = {
+ { GREYBUS_DEVICE(0x45, 0x45) }, /* make shit up */
+ { }, /* terminating NULL entry */
+};
+
+
+static const struct tty_operations gb_ops = {
+ .install = gb_tty_install,
+ .open = gb_tty_open,
+ .close = gb_tty_close,
+ .cleanup = gb_tty_cleanup,
+ .hangup = gb_tty_hangup,
+ .write = gb_tty_write,
+ .write_room = gb_tty_write_room,
+ .ioctl = gb_tty_ioctl,
+ .throttle = gb_tty_throttle,
+ .unthrottle = gb_tty_unthrottle,
+ .chars_in_buffer = gb_tty_chars_in_buffer,
+ .break_ctl = gb_tty_break_ctl,
+ .set_termios = gb_tty_set_termios,
+ .tiocmget = gb_tty_tiocmget,
+ .tiocmset = gb_tty_tiocmset,
+};
+
+static struct tty_driver *gb_tty_driver;
+static struct gb_tty *gb_tty_table[255];
+
+static int tty_gb_probe(struct greybus_device *gdev, const struct greybus_device_id *id)
+{
+ int retval;
+
+ //greybus_set_drvdata(gdev, i2c_gb_data);
+ return 0;
+}
+
+static void tty_gb_disconnect(struct greybus_device *gdev)
+{
+}
+
+static struct greybus_driver tty_gb_driver = {
+ .probe = tty_gb_probe,
+ .disconnect = tty_gb_disconnect,
+ .id_table = id_table,
+};
+
+
+static int __init gb_tty_init(void)
+{
+ int retval;
+
+ gb_tty_driver = alloc_tty_driver(255);
+ if (!gb_tty_driver)
+ return -ENOMEM;
+
+ gb_tty_driver->driver_name = "gb";
+ gb_tty_driver->name = "ttyGB";
+ gb_tty_driver->major = GB_TTY_MAJOR;
+ gb_tty_driver->minor_start = 0;
+ gb_tty_driver->type = TTY_DRIVER_TYPE_SERIAL;
+ gb_tty_driver->subtype = SERIAL_TYPE_NORMAL;
+ gb_tty_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
+ gb_tty_driver->init_termios = tty_std_termios;
+ gb_tty_driver->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ tty_set_operations(gb_tty_driver, &gb_ops);
+
+ retval = tty_register_driver(gb_tty_driver);
+ if (retval) {
+ put_tty_driver(gb_tty_driver);
+ return retval;
+ }
+
+ retval = greybus_register(&tty_gb_driver);
+ if (retval) {
+ tty_unregister_driver(gb_tty_driver);
+ put_tty_driver(gb_tty_driver);
+ }
+ return retval;
+}
+
+static void __exit gb_tty_exit(void)
+{
+ greybus_deregister(&tty_gb_driver);
+ tty_unregister_driver(gb_tty_driver);
+ put_tty_driver(gb_tty_driver);
+}
+
+module_init(gb_tty_init);
+module_exit(gb_tty_exit);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org>");