Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Belkin USB Serial Adapter Driver |
| 3 | * |
| 4 | * Copyright (C) 2000 William Greathouse (wgreathouse@smva.com) |
Ben Minerds | 70f3c75 | 2012-04-28 13:36:35 +1000 | [diff] [blame] | 5 | * Copyright (C) 2000-2001 Greg Kroah-Hartman (greg@kroah.com) |
Johan Hovold | 2afd8287 | 2010-05-15 17:53:53 +0200 | [diff] [blame] | 6 | * Copyright (C) 2010 Johan Hovold (jhovold@gmail.com) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
| 8 | * This program is largely derived from work by the linux-usb group |
| 9 | * and associated source files. Please see the usb/serial files for |
| 10 | * individual credits and copyrights. |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 11 | * |
Ben Minerds | 70f3c75 | 2012-04-28 13:36:35 +1000 | [diff] [blame] | 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2 of the License, or |
| 15 | * (at your option) any later version. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 17 | * See Documentation/usb/usb-serial.txt for more information on using this |
| 18 | * driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | * |
| 20 | * TODO: |
| 21 | * -- Add true modem contol line query capability. Currently we track the |
| 22 | * states reported by the interrupt and the states we request. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | * -- Add support for flush commands |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | */ |
| 25 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <linux/kernel.h> |
| 27 | #include <linux/errno.h> |
| 28 | #include <linux/init.h> |
| 29 | #include <linux/slab.h> |
| 30 | #include <linux/tty.h> |
| 31 | #include <linux/tty_driver.h> |
| 32 | #include <linux/tty_flip.h> |
| 33 | #include <linux/module.h> |
| 34 | #include <linux/spinlock.h> |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 35 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 36 | #include <linux/usb.h> |
Greg Kroah-Hartman | a969888 | 2006-07-11 21:22:58 -0700 | [diff] [blame] | 37 | #include <linux/usb/serial.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | #include "belkin_sa.h" |
| 39 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 40 | #define DRIVER_AUTHOR "William Greathouse <wgreathouse@smva.com>" |
| 41 | #define DRIVER_DESC "USB Belkin Serial converter driver" |
| 42 | |
| 43 | /* function prototypes for a Belkin USB Serial Adapter F5U103 */ |
Johan Hovold | fa91975 | 2012-10-15 18:20:53 +0200 | [diff] [blame] | 44 | static int belkin_sa_port_probe(struct usb_serial_port *port); |
| 45 | static int belkin_sa_port_remove(struct usb_serial_port *port); |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 46 | static int belkin_sa_open(struct tty_struct *tty, |
Alan Cox | a509a7e | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 47 | struct usb_serial_port *port); |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 48 | static void belkin_sa_close(struct usb_serial_port *port); |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 49 | static void belkin_sa_read_int_callback(struct urb *urb); |
Johan Hovold | 2afd8287 | 2010-05-15 17:53:53 +0200 | [diff] [blame] | 50 | static void belkin_sa_process_read_urb(struct urb *urb); |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 51 | static void belkin_sa_set_termios(struct tty_struct *tty, |
| 52 | struct usb_serial_port *port, struct ktermios * old); |
| 53 | static void belkin_sa_break_ctl(struct tty_struct *tty, int break_state); |
Alan Cox | 60b33c1 | 2011-02-14 16:26:14 +0000 | [diff] [blame] | 54 | static int belkin_sa_tiocmget(struct tty_struct *tty); |
Alan Cox | 20b9d17 | 2011-02-14 16:26:50 +0000 | [diff] [blame] | 55 | static int belkin_sa_tiocmset(struct tty_struct *tty, |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 56 | unsigned int set, unsigned int clear); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | |
| 58 | |
Greg Kroah-Hartman | 68e2411 | 2012-05-08 15:46:14 -0700 | [diff] [blame] | 59 | static const struct usb_device_id id_table[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 60 | { USB_DEVICE(BELKIN_SA_VID, BELKIN_SA_PID) }, |
| 61 | { USB_DEVICE(BELKIN_OLD_VID, BELKIN_OLD_PID) }, |
| 62 | { USB_DEVICE(PERACOM_VID, PERACOM_PID) }, |
| 63 | { USB_DEVICE(GOHUBS_VID, GOHUBS_PID) }, |
| 64 | { USB_DEVICE(GOHUBS_VID, HANDYLINK_PID) }, |
| 65 | { USB_DEVICE(BELKIN_DOCKSTATION_VID, BELKIN_DOCKSTATION_PID) }, |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 66 | { } /* Terminating entry */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | }; |
Greg Kroah-Hartman | 68e2411 | 2012-05-08 15:46:14 -0700 | [diff] [blame] | 68 | MODULE_DEVICE_TABLE(usb, id_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | |
| 70 | /* All of the device info needed for the serial converters */ |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 71 | static struct usb_serial_driver belkin_device = { |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 72 | .driver = { |
| 73 | .owner = THIS_MODULE, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 74 | .name = "belkin", |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 75 | }, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 76 | .description = "Belkin / Peracom / GoHubs USB Serial Adapter", |
Greg Kroah-Hartman | 68e2411 | 2012-05-08 15:46:14 -0700 | [diff] [blame] | 77 | .id_table = id_table, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | .num_ports = 1, |
| 79 | .open = belkin_sa_open, |
| 80 | .close = belkin_sa_close, |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 81 | .read_int_callback = belkin_sa_read_int_callback, |
Johan Hovold | 2afd8287 | 2010-05-15 17:53:53 +0200 | [diff] [blame] | 82 | .process_read_urb = belkin_sa_process_read_urb, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 83 | .set_termios = belkin_sa_set_termios, |
| 84 | .break_ctl = belkin_sa_break_ctl, |
| 85 | .tiocmget = belkin_sa_tiocmget, |
| 86 | .tiocmset = belkin_sa_tiocmset, |
Johan Hovold | fa91975 | 2012-10-15 18:20:53 +0200 | [diff] [blame] | 87 | .port_probe = belkin_sa_port_probe, |
| 88 | .port_remove = belkin_sa_port_remove, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | }; |
| 90 | |
Alan Stern | 08a4f6b | 2012-02-23 14:56:17 -0500 | [diff] [blame] | 91 | static struct usb_serial_driver * const serial_drivers[] = { |
| 92 | &belkin_device, NULL |
| 93 | }; |
| 94 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | struct belkin_sa_private { |
| 96 | spinlock_t lock; |
| 97 | unsigned long control_state; |
| 98 | unsigned char last_lsr; |
| 99 | unsigned char last_msr; |
| 100 | int bad_flow_control; |
| 101 | }; |
| 102 | |
| 103 | |
| 104 | /* |
| 105 | * *************************************************************************** |
| 106 | * Belkin USB Serial Adapter F5U103 specific driver functions |
| 107 | * *************************************************************************** |
| 108 | */ |
| 109 | |
| 110 | #define WDR_TIMEOUT 5000 /* default urb timeout */ |
| 111 | |
| 112 | /* assumes that struct usb_serial *serial is available */ |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 113 | #define BSA_USB_CMD(c, v) usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | (c), BELKIN_SA_SET_REQUEST_TYPE, \ |
| 115 | (v), 0, NULL, 0, WDR_TIMEOUT) |
| 116 | |
Johan Hovold | fa91975 | 2012-10-15 18:20:53 +0200 | [diff] [blame] | 117 | static int belkin_sa_port_probe(struct usb_serial_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 118 | { |
Johan Hovold | fa91975 | 2012-10-15 18:20:53 +0200 | [diff] [blame] | 119 | struct usb_device *dev = port->serial->dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 120 | struct belkin_sa_private *priv; |
| 121 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | priv = kmalloc(sizeof(struct belkin_sa_private), GFP_KERNEL); |
| 123 | if (!priv) |
Johan Hovold | fa91975 | 2012-10-15 18:20:53 +0200 | [diff] [blame] | 124 | return -ENOMEM; |
| 125 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 126 | spin_lock_init(&priv->lock); |
| 127 | priv->control_state = 0; |
| 128 | priv->last_lsr = 0; |
| 129 | priv->last_msr = 0; |
| 130 | /* see comments at top of file */ |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 131 | priv->bad_flow_control = |
| 132 | (le16_to_cpu(dev->descriptor.bcdDevice) <= 0x0206) ? 1 : 0; |
Greg Kroah-Hartman | c197a8d | 2008-08-18 13:21:04 -0700 | [diff] [blame] | 133 | dev_info(&dev->dev, "bcdDevice: %04x, bfc: %d\n", |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 134 | le16_to_cpu(dev->descriptor.bcdDevice), |
| 135 | priv->bad_flow_control); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
Johan Hovold | fa91975 | 2012-10-15 18:20:53 +0200 | [diff] [blame] | 137 | usb_set_serial_port_data(port, priv); |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 138 | |
| 139 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | } |
| 141 | |
Johan Hovold | fa91975 | 2012-10-15 18:20:53 +0200 | [diff] [blame] | 142 | static int belkin_sa_port_remove(struct usb_serial_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | { |
Johan Hovold | fa91975 | 2012-10-15 18:20:53 +0200 | [diff] [blame] | 144 | struct belkin_sa_private *priv; |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 145 | |
Johan Hovold | fa91975 | 2012-10-15 18:20:53 +0200 | [diff] [blame] | 146 | priv = usb_get_serial_port_data(port); |
| 147 | kfree(priv); |
| 148 | |
| 149 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | } |
| 151 | |
Johan Hovold | 726ef42 | 2010-05-15 17:53:51 +0200 | [diff] [blame] | 152 | static int belkin_sa_open(struct tty_struct *tty, |
Alan Cox | a509a7e | 2009-09-19 13:13:26 -0700 | [diff] [blame] | 153 | struct usb_serial_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | { |
Johan Hovold | f2f8b7f | 2010-05-15 17:53:52 +0200 | [diff] [blame] | 155 | int retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 156 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | retval = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL); |
| 158 | if (retval) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 159 | dev_err(&port->dev, "usb_submit_urb(read int) failed\n"); |
Johan Hovold | f2f8b7f | 2010-05-15 17:53:52 +0200 | [diff] [blame] | 160 | return retval; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | } |
| 162 | |
Johan Hovold | f2f8b7f | 2010-05-15 17:53:52 +0200 | [diff] [blame] | 163 | retval = usb_serial_generic_open(tty, port); |
| 164 | if (retval) |
| 165 | usb_kill_urb(port->interrupt_in_urb); |
| 166 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | return retval; |
Johan Hovold | 726ef42 | 2010-05-15 17:53:51 +0200 | [diff] [blame] | 168 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | |
Alan Cox | 335f851 | 2009-06-11 12:26:29 +0100 | [diff] [blame] | 170 | static void belkin_sa_close(struct usb_serial_port *port) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 171 | { |
Johan Hovold | f26788d | 2010-03-17 23:00:45 +0100 | [diff] [blame] | 172 | usb_serial_generic_close(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | usb_kill_urb(port->interrupt_in_urb); |
Johan Hovold | 726ef42 | 2010-05-15 17:53:51 +0200 | [diff] [blame] | 174 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 175 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 176 | static void belkin_sa_read_int_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 178 | struct usb_serial_port *port = urb->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | struct belkin_sa_private *priv; |
| 180 | unsigned char *data = urb->transfer_buffer; |
| 181 | int retval; |
Greg Kroah-Hartman | f26aad2 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 182 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 183 | unsigned long flags; |
| 184 | |
Greg Kroah-Hartman | f26aad2 | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 185 | switch (status) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 186 | case 0: |
| 187 | /* success */ |
| 188 | break; |
| 189 | case -ECONNRESET: |
| 190 | case -ENOENT: |
| 191 | case -ESHUTDOWN: |
| 192 | /* this urb is terminated, clean up */ |
Greg Kroah-Hartman | c89aa63 | 2012-05-15 16:27:11 -0700 | [diff] [blame] | 193 | dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n", |
| 194 | __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | return; |
| 196 | default: |
Greg Kroah-Hartman | c89aa63 | 2012-05-15 16:27:11 -0700 | [diff] [blame] | 197 | dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n", |
| 198 | __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | goto exit; |
| 200 | } |
| 201 | |
Greg Kroah-Hartman | 59d33f2 | 2012-09-18 09:58:57 +0100 | [diff] [blame] | 202 | usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 203 | |
| 204 | /* Handle known interrupt data */ |
| 205 | /* ignore data[0] and data[1] */ |
| 206 | |
| 207 | priv = usb_get_serial_port_data(port); |
| 208 | spin_lock_irqsave(&priv->lock, flags); |
| 209 | priv->last_msr = data[BELKIN_SA_MSR_INDEX]; |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 210 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 211 | /* Record Control Line states */ |
| 212 | if (priv->last_msr & BELKIN_SA_MSR_DSR) |
| 213 | priv->control_state |= TIOCM_DSR; |
| 214 | else |
| 215 | priv->control_state &= ~TIOCM_DSR; |
| 216 | |
| 217 | if (priv->last_msr & BELKIN_SA_MSR_CTS) |
| 218 | priv->control_state |= TIOCM_CTS; |
| 219 | else |
| 220 | priv->control_state &= ~TIOCM_CTS; |
| 221 | |
| 222 | if (priv->last_msr & BELKIN_SA_MSR_RI) |
| 223 | priv->control_state |= TIOCM_RI; |
| 224 | else |
| 225 | priv->control_state &= ~TIOCM_RI; |
| 226 | |
| 227 | if (priv->last_msr & BELKIN_SA_MSR_CD) |
| 228 | priv->control_state |= TIOCM_CD; |
| 229 | else |
| 230 | priv->control_state &= ~TIOCM_CD; |
| 231 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | priv->last_lsr = data[BELKIN_SA_LSR_INDEX]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | spin_unlock_irqrestore(&priv->lock, flags); |
| 234 | exit: |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 235 | retval = usb_submit_urb(urb, GFP_ATOMIC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 236 | if (retval) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 237 | dev_err(&port->dev, "%s - usb_submit_urb failed with " |
| 238 | "result %d\n", __func__, retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 239 | } |
| 240 | |
Johan Hovold | 2afd8287 | 2010-05-15 17:53:53 +0200 | [diff] [blame] | 241 | static void belkin_sa_process_read_urb(struct urb *urb) |
| 242 | { |
| 243 | struct usb_serial_port *port = urb->context; |
| 244 | struct belkin_sa_private *priv = usb_get_serial_port_data(port); |
Johan Hovold | 2afd8287 | 2010-05-15 17:53:53 +0200 | [diff] [blame] | 245 | unsigned char *data = urb->transfer_buffer; |
| 246 | unsigned long flags; |
| 247 | unsigned char status; |
| 248 | char tty_flag; |
| 249 | |
| 250 | /* Update line status */ |
| 251 | tty_flag = TTY_NORMAL; |
| 252 | |
| 253 | spin_lock_irqsave(&priv->lock, flags); |
| 254 | status = priv->last_lsr; |
| 255 | priv->last_lsr &= ~BELKIN_SA_LSR_ERR; |
| 256 | spin_unlock_irqrestore(&priv->lock, flags); |
| 257 | |
| 258 | if (!urb->actual_length) |
| 259 | return; |
| 260 | |
Johan Hovold | 2afd8287 | 2010-05-15 17:53:53 +0200 | [diff] [blame] | 261 | if (status & BELKIN_SA_LSR_ERR) { |
| 262 | /* Break takes precedence over parity, which takes precedence |
| 263 | * over framing errors. */ |
| 264 | if (status & BELKIN_SA_LSR_BI) |
| 265 | tty_flag = TTY_BREAK; |
| 266 | else if (status & BELKIN_SA_LSR_PE) |
| 267 | tty_flag = TTY_PARITY; |
| 268 | else if (status & BELKIN_SA_LSR_FE) |
| 269 | tty_flag = TTY_FRAME; |
| 270 | dev_dbg(&port->dev, "tty_flag = %d\n", tty_flag); |
| 271 | |
| 272 | /* Overrun is special, not associated with a char. */ |
| 273 | if (status & BELKIN_SA_LSR_OE) |
Jiri Slaby | 92a19f9 | 2013-01-03 15:53:03 +0100 | [diff] [blame] | 274 | tty_insert_flip_char(&port->port, 0, TTY_OVERRUN); |
Johan Hovold | 2afd8287 | 2010-05-15 17:53:53 +0200 | [diff] [blame] | 275 | } |
| 276 | |
Jiri Slaby | 2f69335 | 2013-01-03 15:53:02 +0100 | [diff] [blame] | 277 | tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag, |
Johan Hovold | 2afd8287 | 2010-05-15 17:53:53 +0200 | [diff] [blame] | 278 | urb->actual_length); |
Jiri Slaby | 2e124b4 | 2013-01-03 15:53:06 +0100 | [diff] [blame] | 279 | tty_flip_buffer_push(&port->port); |
Johan Hovold | 2afd8287 | 2010-05-15 17:53:53 +0200 | [diff] [blame] | 280 | } |
| 281 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 282 | static void belkin_sa_set_termios(struct tty_struct *tty, |
| 283 | struct usb_serial_port *port, struct ktermios *old_termios) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | { |
| 285 | struct usb_serial *serial = port->serial; |
| 286 | struct belkin_sa_private *priv = usb_get_serial_port_data(port); |
| 287 | unsigned int iflag; |
| 288 | unsigned int cflag; |
| 289 | unsigned int old_iflag = 0; |
| 290 | unsigned int old_cflag = 0; |
| 291 | __u16 urb_value = 0; /* Will hold the new flags */ |
| 292 | unsigned long flags; |
| 293 | unsigned long control_state; |
| 294 | int bad_flow_control; |
Alan Cox | 9a8baec | 2007-06-22 14:40:18 +0100 | [diff] [blame] | 295 | speed_t baud; |
Alan Cox | adc8d746 | 2012-07-14 15:31:47 +0100 | [diff] [blame] | 296 | struct ktermios *termios = &tty->termios; |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 297 | |
Alan Cox | 3ec466b | 2007-12-13 16:15:26 -0800 | [diff] [blame] | 298 | iflag = termios->c_iflag; |
| 299 | cflag = termios->c_cflag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 300 | |
Alan Cox | 3ec466b | 2007-12-13 16:15:26 -0800 | [diff] [blame] | 301 | termios->c_cflag &= ~CMSPAR; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 302 | |
| 303 | /* get a local copy of the current port settings */ |
| 304 | spin_lock_irqsave(&priv->lock, flags); |
| 305 | control_state = priv->control_state; |
| 306 | bad_flow_control = priv->bad_flow_control; |
| 307 | spin_unlock_irqrestore(&priv->lock, flags); |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 308 | |
Alan Cox | 9a8baec | 2007-06-22 14:40:18 +0100 | [diff] [blame] | 309 | old_iflag = old_termios->c_iflag; |
| 310 | old_cflag = old_termios->c_cflag; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 311 | |
| 312 | /* Set the baud rate */ |
Alan Cox | 3ec466b | 2007-12-13 16:15:26 -0800 | [diff] [blame] | 313 | if ((cflag & CBAUD) != (old_cflag & CBAUD)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | /* reassert DTR and (maybe) RTS on transition from B0 */ |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 315 | if ((old_cflag & CBAUD) == B0) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | control_state |= (TIOCM_DTR|TIOCM_RTS); |
| 317 | if (BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, 1) < 0) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 318 | dev_err(&port->dev, "Set DTR error\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 319 | /* don't set RTS if using hardware flow control */ |
Alan Cox | 3ec466b | 2007-12-13 16:15:26 -0800 | [diff] [blame] | 320 | if (!(old_cflag & CRTSCTS)) |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 321 | if (BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST |
| 322 | , 1) < 0) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 323 | dev_err(&port->dev, "Set RTS error\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 324 | } |
Alan Cox | 9a8baec | 2007-06-22 14:40:18 +0100 | [diff] [blame] | 325 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 327 | baud = tty_get_baud_rate(tty); |
Alan Cox | 3ec466b | 2007-12-13 16:15:26 -0800 | [diff] [blame] | 328 | if (baud) { |
| 329 | urb_value = BELKIN_SA_BAUD(baud); |
| 330 | /* Clip to maximum speed */ |
| 331 | if (urb_value == 0) |
| 332 | urb_value = 1; |
| 333 | /* Turn it back into a resulting real baud rate */ |
| 334 | baud = BELKIN_SA_BAUD(urb_value); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | |
Alan Cox | 3ec466b | 2007-12-13 16:15:26 -0800 | [diff] [blame] | 336 | /* Report the actual baud rate back to the caller */ |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 337 | tty_encode_baud_rate(tty, baud, baud); |
Alan Cox | 9a8baec | 2007-06-22 14:40:18 +0100 | [diff] [blame] | 338 | if (BSA_USB_CMD(BELKIN_SA_SET_BAUDRATE_REQUEST, urb_value) < 0) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 339 | dev_err(&port->dev, "Set baudrate error\n"); |
Alan Cox | 9a8baec | 2007-06-22 14:40:18 +0100 | [diff] [blame] | 340 | } else { |
| 341 | /* Disable flow control */ |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 342 | if (BSA_USB_CMD(BELKIN_SA_SET_FLOW_CTRL_REQUEST, |
| 343 | BELKIN_SA_FLOW_NONE) < 0) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 344 | dev_err(&port->dev, "Disable flowcontrol error\n"); |
Alan Cox | 9a8baec | 2007-06-22 14:40:18 +0100 | [diff] [blame] | 345 | /* Drop RTS and DTR */ |
| 346 | control_state &= ~(TIOCM_DTR | TIOCM_RTS); |
| 347 | if (BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, 0) < 0) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 348 | dev_err(&port->dev, "DTR LOW error\n"); |
Alan Cox | 9a8baec | 2007-06-22 14:40:18 +0100 | [diff] [blame] | 349 | if (BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, 0) < 0) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 350 | dev_err(&port->dev, "RTS LOW error\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | } |
| 352 | |
| 353 | /* set the parity */ |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 354 | if ((cflag ^ old_cflag) & (PARENB | PARODD)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 355 | if (cflag & PARENB) |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 356 | urb_value = (cflag & PARODD) ? BELKIN_SA_PARITY_ODD |
| 357 | : BELKIN_SA_PARITY_EVEN; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | else |
| 359 | urb_value = BELKIN_SA_PARITY_NONE; |
| 360 | if (BSA_USB_CMD(BELKIN_SA_SET_PARITY_REQUEST, urb_value) < 0) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 361 | dev_err(&port->dev, "Set parity error\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | } |
| 363 | |
| 364 | /* set the number of data bits */ |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 365 | if ((cflag & CSIZE) != (old_cflag & CSIZE)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 366 | switch (cflag & CSIZE) { |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 367 | case CS5: |
| 368 | urb_value = BELKIN_SA_DATA_BITS(5); |
| 369 | break; |
| 370 | case CS6: |
| 371 | urb_value = BELKIN_SA_DATA_BITS(6); |
| 372 | break; |
| 373 | case CS7: |
| 374 | urb_value = BELKIN_SA_DATA_BITS(7); |
| 375 | break; |
| 376 | case CS8: |
| 377 | urb_value = BELKIN_SA_DATA_BITS(8); |
| 378 | break; |
Ben Minerds | 70f3c75 | 2012-04-28 13:36:35 +1000 | [diff] [blame] | 379 | default: |
Greg Kroah-Hartman | c89aa63 | 2012-05-15 16:27:11 -0700 | [diff] [blame] | 380 | dev_dbg(&port->dev, |
| 381 | "CSIZE was not CS5-CS8, using default of 8\n"); |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 382 | urb_value = BELKIN_SA_DATA_BITS(8); |
| 383 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | } |
| 385 | if (BSA_USB_CMD(BELKIN_SA_SET_DATA_BITS_REQUEST, urb_value) < 0) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 386 | dev_err(&port->dev, "Set data bits error\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | } |
| 388 | |
| 389 | /* set the number of stop bits */ |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 390 | if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) { |
| 391 | urb_value = (cflag & CSTOPB) ? BELKIN_SA_STOP_BITS(2) |
| 392 | : BELKIN_SA_STOP_BITS(1); |
| 393 | if (BSA_USB_CMD(BELKIN_SA_SET_STOP_BITS_REQUEST, |
| 394 | urb_value) < 0) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 395 | dev_err(&port->dev, "Set stop bits error\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 396 | } |
| 397 | |
| 398 | /* Set flow control */ |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 399 | if (((iflag ^ old_iflag) & (IXOFF | IXON)) || |
| 400 | ((cflag ^ old_cflag) & CRTSCTS)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 401 | urb_value = 0; |
| 402 | if ((iflag & IXOFF) || (iflag & IXON)) |
| 403 | urb_value |= (BELKIN_SA_FLOW_OXON | BELKIN_SA_FLOW_IXON); |
| 404 | else |
| 405 | urb_value &= ~(BELKIN_SA_FLOW_OXON | BELKIN_SA_FLOW_IXON); |
| 406 | |
| 407 | if (cflag & CRTSCTS) |
| 408 | urb_value |= (BELKIN_SA_FLOW_OCTS | BELKIN_SA_FLOW_IRTS); |
| 409 | else |
| 410 | urb_value &= ~(BELKIN_SA_FLOW_OCTS | BELKIN_SA_FLOW_IRTS); |
| 411 | |
| 412 | if (bad_flow_control) |
| 413 | urb_value &= ~(BELKIN_SA_FLOW_IRTS); |
| 414 | |
| 415 | if (BSA_USB_CMD(BELKIN_SA_SET_FLOW_CTRL_REQUEST, urb_value) < 0) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 416 | dev_err(&port->dev, "Set flow control error\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 417 | } |
| 418 | |
| 419 | /* save off the modified port settings */ |
| 420 | spin_lock_irqsave(&priv->lock, flags); |
| 421 | priv->control_state = control_state; |
| 422 | spin_unlock_irqrestore(&priv->lock, flags); |
Johan Hovold | 726ef42 | 2010-05-15 17:53:51 +0200 | [diff] [blame] | 423 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 424 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 425 | static void belkin_sa_break_ctl(struct tty_struct *tty, int break_state) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 426 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 427 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 428 | struct usb_serial *serial = port->serial; |
| 429 | |
| 430 | if (BSA_USB_CMD(BELKIN_SA_SET_BREAK_REQUEST, break_state ? 1 : 0) < 0) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 431 | dev_err(&port->dev, "Set break_ctl %d\n", break_state); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 432 | } |
| 433 | |
Alan Cox | 60b33c1 | 2011-02-14 16:26:14 +0000 | [diff] [blame] | 434 | static int belkin_sa_tiocmget(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 435 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 436 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 437 | struct belkin_sa_private *priv = usb_get_serial_port_data(port); |
| 438 | unsigned long control_state; |
| 439 | unsigned long flags; |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 440 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | spin_lock_irqsave(&priv->lock, flags); |
| 442 | control_state = priv->control_state; |
| 443 | spin_unlock_irqrestore(&priv->lock, flags); |
| 444 | |
| 445 | return control_state; |
| 446 | } |
| 447 | |
Alan Cox | 20b9d17 | 2011-02-14 16:26:50 +0000 | [diff] [blame] | 448 | static int belkin_sa_tiocmset(struct tty_struct *tty, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | unsigned int set, unsigned int clear) |
| 450 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 451 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | struct usb_serial *serial = port->serial; |
| 453 | struct belkin_sa_private *priv = usb_get_serial_port_data(port); |
| 454 | unsigned long control_state; |
| 455 | unsigned long flags; |
| 456 | int retval; |
| 457 | int rts = 0; |
| 458 | int dtr = 0; |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 459 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 460 | spin_lock_irqsave(&priv->lock, flags); |
| 461 | control_state = priv->control_state; |
| 462 | |
| 463 | if (set & TIOCM_RTS) { |
| 464 | control_state |= TIOCM_RTS; |
| 465 | rts = 1; |
| 466 | } |
| 467 | if (set & TIOCM_DTR) { |
| 468 | control_state |= TIOCM_DTR; |
| 469 | dtr = 1; |
| 470 | } |
| 471 | if (clear & TIOCM_RTS) { |
| 472 | control_state &= ~TIOCM_RTS; |
| 473 | rts = 0; |
| 474 | } |
| 475 | if (clear & TIOCM_DTR) { |
| 476 | control_state &= ~TIOCM_DTR; |
| 477 | dtr = 0; |
| 478 | } |
| 479 | |
| 480 | priv->control_state = control_state; |
| 481 | spin_unlock_irqrestore(&priv->lock, flags); |
| 482 | |
| 483 | retval = BSA_USB_CMD(BELKIN_SA_SET_RTS_REQUEST, rts); |
| 484 | if (retval < 0) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 485 | dev_err(&port->dev, "Set RTS error %d\n", retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | goto exit; |
| 487 | } |
| 488 | |
| 489 | retval = BSA_USB_CMD(BELKIN_SA_SET_DTR_REQUEST, dtr); |
| 490 | if (retval < 0) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 491 | dev_err(&port->dev, "Set DTR error %d\n", retval); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 492 | goto exit; |
| 493 | } |
| 494 | exit: |
| 495 | return retval; |
| 496 | } |
| 497 | |
Greg Kroah-Hartman | 68e2411 | 2012-05-08 15:46:14 -0700 | [diff] [blame] | 498 | module_usb_serial_driver(serial_drivers, id_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 499 | |
Alan Cox | b69c149 | 2008-07-22 11:09:39 +0100 | [diff] [blame] | 500 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 501 | MODULE_DESCRIPTION(DRIVER_DESC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 502 | MODULE_LICENSE("GPL"); |