/* * USB Wishbone-Serial adapter driver * * Copyright (C) 2013 Wesley W. Terpstra * Copyright (C) 2013 GSI Helmholtz Centre for Heavy Ion Research GmbH * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version 2 * of the License, or (at your option) any later version. */ #include #include #include #include #include #include #define GSI_VENDOR_OPENCLOSE 0xB0 static const struct usb_device_id id_table[] = { { USB_DEVICE_AND_INTERFACE_INFO(0x1D50, 0x6062, 0xFF, 0xFF, 0xFF) }, { }, }; MODULE_DEVICE_TABLE(usb, id_table); /* * Etherbone must be told that a new stream has begun before data arrives. * This is necessary to restart the negotiation of Wishbone bus parameters. * Similarly, when the stream ends, Etherbone must be told so that the cycle * line can be driven low in the case that userspace failed to do so. */ static int usb_gsi_openclose(struct usb_serial_port *port, int value) { struct usb_device *dev = port->serial->dev; return usb_control_msg( dev, usb_sndctrlpipe(dev, 0), /* Send to EP0OUT */ GSI_VENDOR_OPENCLOSE, USB_DIR_OUT|USB_TYPE_VENDOR|USB_RECIP_INTERFACE, value, /* wValue = device is open(1) or closed(0) */ port->serial->interface->cur_altsetting->desc.bInterfaceNumber, NULL, 0, /* There is no data stage */ 5000); /* Timeout till operation fails */ } static int wishbone_serial_open(struct tty_struct *tty, struct usb_serial_port *port) { int retval; retval = usb_gsi_openclose(port, 1); if (retval) { dev_err(&port->serial->dev->dev, "Could not mark device as open (%d)\n", retval); return retval; } retval = usb_serial_generic_open(tty, port); if (retval) usb_gsi_openclose(port, 0); return retval; } static void wishbone_serial_close(struct usb_serial_port *port) { usb_serial_generic_close(port); usb_gsi_openclose(port, 0); } static struct usb_serial_driver wishbone_serial_device = { .driver = { .owner = THIS_MODULE, .name = "wishbone_serial", }, .id_table = id_table, .num_ports = 1, .open = &wishbone_serial_open, .close = &wishbone_serial_close, }; static struct usb_serial_driver * const serial_drivers[] = { &wishbone_serial_device, NULL }; module_usb_serial_driver(serial_drivers, id_table); MODULE_AUTHOR("Wesley W. Terpstra "); MODULE_DESCRIPTION("USB Wishbone-Serial adapter"); MODULE_LICENSE("GPL"); r'>author

path: root/tools/lib/traceevent/Makefile

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