/* * ZTE_EV USB serial driver * * Copyright (C) 2012 Greg Kroah-Hartman * Copyright (C) 2012 Linux Foundation * * 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. * * This driver is based on code found in a ZTE_ENV patch that modified * the usb-serial generic driver. Comments were left in that I think * show the commands used to talk to the device, but I am not sure. */ #include #include #include #include #include #include #include #include #define MAX_SETUP_DATA_SIZE 32 static void debug_data(struct device *dev, const char *function, int len, const unsigned char *data, int result) { dev_dbg(dev, "result = %d\n", result); if (result == len) dev_dbg(dev, "%s - length = %d, data = %*ph\n", function, len, len, data); } static int zte_ev_usb_serial_open(struct tty_struct *tty, struct usb_serial_port *port) { struct usb_device *udev = port->serial->dev; struct device *dev = &port->dev; int result = 0; int len; unsigned char *buf; buf = kmalloc(MAX_SETUP_DATA_SIZE, GFP_KERNEL); if (!buf) return -ENOMEM; /* send 1st ctl cmd(CTL 21 22 01 00 00 00 00 00) */ len = 0; result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0001, 0x0000, NULL, len, USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 2st cmd and recieve data */ /* * 16.0 CTL a1 21 00 00 00 00 07 00 CLASS 25.1.0(5) * 16.0 DI 00 96 00 00 00 00 08 */ len = 0x0007; result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x21, 0xa1, 0x0000, 0x0000, buf, len, USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 3 cmd */ /* * 16.0 CTL 21 20 00 00 00 00 07 00 CLASS 30.1.0 * 16.0 DO 80 25 00 00 00 00 08 .%..... 30.2.0 */ len = 0x0007; buf[0] = 0x80; buf[1] = 0x25; buf[2] = 0x00; buf[3] = 0x00; buf[4] = 0x00; buf[5] = 0x00; buf[6] = 0x08; result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x20, 0x21, 0x0000, 0x0000, buf, len, USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 4 cmd */ /* * 16.0 CTL 21 22 03 00 00 00 00 00 */ len = 0; result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0003, 0x0000, NULL, len, USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 5 cmd */ /* * 16.0 CTL a1 21 00 00 00 00 07 00 CLASS 33.1.0 * 16.0 DI 80 25 00 00 00 00 08 */ len = 0x0007; result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x21, 0xa1, 0x0000, 0x0000, buf, len, USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 6 cmd */ /* * 16.0 CTL 21 20 00 00 00 00 07 00 CLASS 34.1.0 * 16.0 DO 80 25 00 00 00 00 08 */ len = 0x0007; buf[0] = 0x80; buf[1] = 0x25; buf[2] = 0x00; buf[3] = 0x00; buf[4] = 0x00; buf[5] = 0x00; buf[6] = 0x08; result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x20, 0x21, 0x0000, 0x0000, buf, len, USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); kfree(buf); return usb_serial_generic_open(tty, port); } /* * CTL 21 22 02 00 00 00 00 00 CLASS 338.1.0 * * 16.1 DI a1 20 00 00 00 00 02 00 02 00 . ........ 340.1.0 * 16.0 CTL 21 22 03 00 00 00 00 00 CLASS 341.1.0 * * 16.0 CTL a1 21 00 00 00 00 07 00 CLASS 346.1.0(3) * 16.0 DI 00 08 07 00 00 00 08 ....... 346.2.0 * * 16.0 CTL 21 20 00 00 00 00 07 00 CLASS 349.1.0 * 16.0 DO 00 c2 01 00 00 00 08 ....... 349.2.0 * * 16.0 CTL 21 22 03 00 00 00 00 00 CLASS 350.1.0(2) * * 16.0 CTL a1 21 00 00 00 00 07 00 CLASS 352.1.0 * 16.0 DI 00 c2 01 00 00 00 08 ....... 352.2.0 * * 16.1 DI a1 20 00 00 00 00 02 00 02 00 . ........ 353.1.0 * * 16.0 CTL 21 20 00 00 00 00 07 00 CLASS 354.1.0 * 16.0 DO 00 c2 01 00 00 00 08 ....... 354.2.0 * * 16.0 CTL 21 22 03 00 00 00 00 00 */ static void zte_ev_usb_serial_close(struct usb_serial_port *port) { struct usb_device *udev = port->serial->dev; struct device *dev = &port->dev; int result = 0; int len; unsigned char *buf; buf = kmalloc(MAX_SETUP_DATA_SIZE, GFP_KERNEL); if (!buf) return; /* send 1st ctl cmd(CTL 21 22 02 00 00 00 00 00) */ len = 0; result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0002, 0x0000, NULL, len, USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 2st ctl cmd(CTL 21 22 03 00 00 00 00 00 ) */ len = 0; result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0003, 0x0000, NULL, len, USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 3st cmd and recieve data */ /* * 16.0 CTL a1 21 00 00 00 00 07 00 CLASS 25.1.0(5) * 16.0 DI 00 08 07 00 00 00 08 */ len = 0x0007; result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x21, 0xa1, 0x0000, 0x0000, buf, len, USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 4 cmd */ /* * 16.0 CTL 21 20 00 00 00 00 07 00 CLASS 30.1.0 * 16.0 DO 00 c2 01 00 00 00 08 .%..... 30.2.0 */ len = 0x0007; buf[0] = 0x00; buf[1] = 0xc2; buf[2] = 0x01; buf[3] = 0x00; buf[4] = 0x00; buf[5] = 0x00; buf[6] = 0x08; result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x20, 0x21, 0x0000, 0x0000, buf, len, USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 5 cmd */ /* * 16.0 CTL 21 22 03 00 00 00 00 00 */ len = 0; result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0003, 0x0000, NULL, len, USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); /* send 6 cmd */ /* * 16.0 CTL a1 21 00 00 00 00 07 00 CLASS 33.1.0 * 16.0 DI 00 c2 01 00 00 00 08 */ len = 0x0007; result = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), 0x21, 0xa1, 0x0000, 0x0000, buf, len, USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 7 cmd */ /* * 16.0 CTL 21 20 00 00 00 00 07 00 CLASS 354.1.0 * 16.0 DO 00 c2 01 00 00 00 08 ....... 354.2.0 */ len = 0x0007; buf[0] = 0x00; buf[1] = 0xc2; buf[2] = 0x01; buf[3] = 0x00; buf[4] = 0x00; buf[5] = 0x00; buf[6] = 0x08; result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x20, 0x21, 0x0000, 0x0000, buf, len, USB_CTRL_GET_TIMEOUT); debug_data(dev, __func__, len, buf, result); /* send 8 cmd */ /* * 16.0 CTL 21 22 03 00 00 00 00 00 */ len = 0; result = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), 0x22, 0x21, 0x0003, 0x0000, NULL, len, USB_CTRL_GET_TIMEOUT); dev_dbg(dev, "result = %d\n", result); kfree(buf); usb_serial_generic_close(port); } static const struct usb_device_id id_table[] = { /* MG880 */ { USB_DEVICE(0x19d2, 0xfffd) }, { }, }; MODULE_DEVICE_TABLE(usb, id_table); static struct usb_serial_driver zio_device = { .driver = { .owner = THIS_MODULE, .name = "zte_ev", }, .id_table = id_table, .num_ports = 1, .open = zte_ev_usb_serial_open, .close = zte_ev_usb_serial_close, }; static struct usb_serial_driver * const serial_drivers[] = { &zio_device, NULL }; module_usb_serial_driver(serial_drivers, id_table); MODULE_LICENSE("GPL v2");