Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * USB ZyXEL omni.net LCD PLUS driver |
| 3 | * |
Greg Kroah-Hartman | 4d0dce3 | 2007-06-12 11:43:37 -0700 | [diff] [blame] | 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of the GNU General Public License version |
| 6 | * 2 as published by the Free Software Foundation. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 8 | * See Documentation/usb/usb-serial.txt for more information on using this |
| 9 | * driver |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
| 11 | * Please report both successes and troubles to the author at omninet@kroah.com |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 12 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * (05/30/2001) gkh |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 14 | * switched from using spinlock to a semaphore, which fixes lots of |
| 15 | * problems. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 16 | * |
| 17 | * (04/08/2001) gb |
| 18 | * Identify version on module load. |
| 19 | * |
| 20 | * (11/01/2000) Adam J. Richter |
| 21 | * usb_device_id table support |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 22 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 23 | * (10/05/2000) gkh |
| 24 | * Fixed bug with urb->dev not being set properly, now that the usb |
| 25 | * core needs it. |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 26 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | * (08/28/2000) gkh |
| 28 | * Added locks for SMP safeness. |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 29 | * Fixed MOD_INC and MOD_DEC logic and the ability to open a port more |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | * than once. |
| 31 | * Fixed potential race in omninet_write_bulk_callback |
| 32 | * |
| 33 | * (07/19/2000) gkh |
| 34 | * Added module_init and module_exit functions to handle the fact that this |
| 35 | * driver is a loadable module now. |
| 36 | * |
| 37 | */ |
| 38 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 39 | #include <linux/kernel.h> |
| 40 | #include <linux/errno.h> |
| 41 | #include <linux/init.h> |
| 42 | #include <linux/slab.h> |
| 43 | #include <linux/tty.h> |
| 44 | #include <linux/tty_driver.h> |
| 45 | #include <linux/tty_flip.h> |
| 46 | #include <linux/module.h> |
| 47 | #include <linux/spinlock.h> |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 48 | #include <linux/uaccess.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 49 | #include <linux/usb.h> |
Greg Kroah-Hartman | a969888 | 2006-07-11 21:22:58 -0700 | [diff] [blame] | 50 | #include <linux/usb/serial.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
| 52 | static int debug; |
| 53 | |
| 54 | /* |
| 55 | * Version Information |
| 56 | */ |
| 57 | #define DRIVER_VERSION "v1.1" |
| 58 | #define DRIVER_AUTHOR "Alessandro Zummo" |
| 59 | #define DRIVER_DESC "USB ZyXEL omni.net LCD PLUS Driver" |
| 60 | |
| 61 | #define ZYXEL_VENDOR_ID 0x0586 |
| 62 | #define ZYXEL_OMNINET_ID 0x1000 |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 63 | /* This one seems to be a re-branded ZyXEL device */ |
| 64 | #define BT_IGNITIONPRO_ID 0x2000 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 65 | |
| 66 | /* function prototypes */ |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 67 | static int omninet_open(struct tty_struct *tty, struct usb_serial_port *port, |
| 68 | struct file *filp); |
| 69 | static void omninet_close(struct tty_struct *tty, struct usb_serial_port *port, |
| 70 | struct file *filp); |
| 71 | static void omninet_read_bulk_callback(struct urb *urb); |
| 72 | static void omninet_write_bulk_callback(struct urb *urb); |
| 73 | static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port, |
| 74 | const unsigned char *buf, int count); |
| 75 | static int omninet_write_room(struct tty_struct *tty); |
| 76 | static void omninet_shutdown(struct usb_serial *serial); |
| 77 | static int omninet_attach(struct usb_serial *serial); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 79 | static struct usb_device_id id_table[] = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | { USB_DEVICE(ZYXEL_VENDOR_ID, ZYXEL_OMNINET_ID) }, |
| 81 | { USB_DEVICE(ZYXEL_VENDOR_ID, BT_IGNITIONPRO_ID) }, |
| 82 | { } /* Terminating entry */ |
| 83 | }; |
| 84 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 85 | MODULE_DEVICE_TABLE(usb, id_table); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | |
| 87 | static struct usb_driver omninet_driver = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | .name = "omninet", |
| 89 | .probe = usb_serial_probe, |
| 90 | .disconnect = usb_serial_disconnect, |
| 91 | .id_table = id_table, |
Greg Kroah-Hartman | ba9dc65 | 2005-11-16 13:41:28 -0800 | [diff] [blame] | 92 | .no_dynamic_id = 1, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | }; |
| 94 | |
| 95 | |
Greg Kroah-Hartman | ea65370 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 96 | static struct usb_serial_driver zyxel_omninet_device = { |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 97 | .driver = { |
| 98 | .owner = THIS_MODULE, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 99 | .name = "omninet", |
Greg Kroah-Hartman | 18fcac3 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 100 | }, |
Greg Kroah-Hartman | 269bda1 | 2005-06-20 21:15:16 -0700 | [diff] [blame] | 101 | .description = "ZyXEL - omni.net lcd plus usb", |
Johannes Hölzl | d9b1b78 | 2006-12-17 21:50:24 +0100 | [diff] [blame] | 102 | .usb_driver = &omninet_driver, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 103 | .id_table = id_table, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 104 | .num_ports = 1, |
Oliver Neukum | 5ec1862 | 2007-03-27 16:02:34 +0200 | [diff] [blame] | 105 | .attach = omninet_attach, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | .open = omninet_open, |
| 107 | .close = omninet_close, |
| 108 | .write = omninet_write, |
| 109 | .write_room = omninet_write_room, |
| 110 | .read_bulk_callback = omninet_read_bulk_callback, |
| 111 | .write_bulk_callback = omninet_write_bulk_callback, |
| 112 | .shutdown = omninet_shutdown, |
| 113 | }; |
| 114 | |
| 115 | |
| 116 | /* The protocol. |
| 117 | * |
| 118 | * The omni.net always exchange 64 bytes of data with the host. The first |
| 119 | * four bytes are the control header, you can see it in the above structure. |
| 120 | * |
| 121 | * oh_seq is a sequence number. Don't know if/how it's used. |
| 122 | * oh_len is the length of the data bytes in the packet. |
| 123 | * oh_xxx Bit-mapped, related to handshaking and status info. |
| 124 | * I normally set it to 0x03 in trasmitted frames. |
| 125 | * 7: Active when the TA is in a CONNECTed state. |
| 126 | * 6: unknown |
| 127 | * 5: handshaking, unknown |
| 128 | * 4: handshaking, unknown |
| 129 | * 3: unknown, usually 0 |
| 130 | * 2: unknown, usually 0 |
| 131 | * 1: handshaking, unknown, usually set to 1 in trasmitted frames |
| 132 | * 0: handshaking, unknown, usually set to 1 in trasmitted frames |
| 133 | * oh_pad Probably a pad byte. |
| 134 | * |
| 135 | * After the header you will find data bytes if oh_len was greater than zero. |
| 136 | * |
| 137 | */ |
| 138 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 139 | struct omninet_header { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | __u8 oh_seq; |
| 141 | __u8 oh_len; |
| 142 | __u8 oh_xxx; |
| 143 | __u8 oh_pad; |
| 144 | }; |
| 145 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 146 | struct omninet_data { |
| 147 | __u8 od_outseq; /* Sequence number for bulk_out URBs */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 148 | }; |
| 149 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 150 | static int omninet_attach(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 151 | { |
Oliver Neukum | 5ec1862 | 2007-03-27 16:02:34 +0200 | [diff] [blame] | 152 | struct omninet_data *od; |
| 153 | struct usb_serial_port *port = serial->port[0]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 155 | od = kmalloc(sizeof(struct omninet_data), GFP_KERNEL); |
| 156 | if (!od) { |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 157 | dev_err(&port->dev, "%s- kmalloc(%Zd) failed.\n", |
| 158 | __func__, sizeof(struct omninet_data)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 159 | return -ENOMEM; |
| 160 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | usb_set_serial_port_data(port, od); |
Oliver Neukum | 5ec1862 | 2007-03-27 16:02:34 +0200 | [diff] [blame] | 162 | return 0; |
| 163 | } |
| 164 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 165 | static int omninet_open(struct tty_struct *tty, |
| 166 | struct usb_serial_port *port, struct file *filp) |
Oliver Neukum | 5ec1862 | 2007-03-27 16:02:34 +0200 | [diff] [blame] | 167 | { |
| 168 | struct usb_serial *serial = port->serial; |
| 169 | struct usb_serial_port *wport; |
Oliver Neukum | 5ec1862 | 2007-03-27 16:02:34 +0200 | [diff] [blame] | 170 | int result = 0; |
| 171 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 172 | dbg("%s - port %d", __func__, port->number); |
Oliver Neukum | 5ec1862 | 2007-03-27 16:02:34 +0200 | [diff] [blame] | 173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | wport = serial->port[1]; |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 175 | tty_port_tty_set(&wport->port, tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | |
| 177 | /* Start reading from the device */ |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 178 | usb_fill_bulk_urb(port->read_urb, serial->dev, |
| 179 | usb_rcvbulkpipe(serial->dev, |
| 180 | port->bulk_in_endpointAddress), |
| 181 | port->read_urb->transfer_buffer, |
| 182 | port->read_urb->transfer_buffer_length, |
| 183 | omninet_read_bulk_callback, port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | result = usb_submit_urb(port->read_urb, GFP_KERNEL); |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 185 | if (result) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 186 | dev_err(&port->dev, |
| 187 | "%s - failed submitting read urb, error %d\n", |
| 188 | __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 189 | return result; |
| 190 | } |
| 191 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 192 | static void omninet_close(struct tty_struct *tty, |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 193 | struct usb_serial_port *port, struct file *filp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 195 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 196 | usb_kill_urb(port->read_urb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | } |
| 198 | |
| 199 | |
| 200 | #define OMNINET_DATAOFFSET 0x04 |
| 201 | #define OMNINET_HEADERLEN sizeof(struct omninet_header) |
| 202 | #define OMNINET_BULKOUTSIZE (64 - OMNINET_HEADERLEN) |
| 203 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 204 | static void omninet_read_bulk_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | { |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 206 | struct usb_serial_port *port = urb->context; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 207 | unsigned char *data = urb->transfer_buffer; |
| 208 | struct omninet_header *header = (struct omninet_header *) &data[0]; |
Greg Kroah-Hartman | fdc2deb | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 209 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | int result; |
Alan Cox | 4944d40 | 2008-07-22 11:16:03 +0100 | [diff] [blame] | 211 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 212 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 213 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
Greg Kroah-Hartman | fdc2deb | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 215 | if (status) { |
| 216 | dbg("%s - nonzero read bulk status received: %d", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 217 | __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 218 | return; |
| 219 | } |
| 220 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 221 | if (debug && header->oh_xxx != 0x30) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | if (urb->actual_length) { |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 223 | printk(KERN_DEBUG __FILE__ |
| 224 | ": omninet_read %d: ", header->oh_len); |
| 225 | for (i = 0; i < (header->oh_len + |
| 226 | OMNINET_HEADERLEN); i++) |
| 227 | printk("%.2x ", data[i]); |
| 228 | printk("\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 229 | } |
| 230 | } |
| 231 | |
| 232 | if (urb->actual_length && header->oh_len) { |
Alan Cox | 4a90f09 | 2008-10-13 10:39:46 +0100 | [diff] [blame] | 233 | struct tty_struct *tty = tty_port_tty_get(&port->port); |
| 234 | tty_insert_flip_string(tty, data + OMNINET_DATAOFFSET, |
| 235 | header->oh_len); |
| 236 | tty_flip_buffer_push(tty); |
| 237 | tty_kref_put(tty); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | } |
| 239 | |
| 240 | /* Continue trying to always read */ |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 241 | usb_fill_bulk_urb(urb, port->serial->dev, |
| 242 | usb_rcvbulkpipe(port->serial->dev, |
| 243 | port->bulk_in_endpointAddress), |
| 244 | urb->transfer_buffer, urb->transfer_buffer_length, |
| 245 | omninet_read_bulk_callback, port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | result = usb_submit_urb(urb, GFP_ATOMIC); |
| 247 | if (result) |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 248 | dev_err(&port->dev, |
| 249 | "%s - failed resubmitting read urb, error %d\n", |
| 250 | __func__, result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 251 | |
| 252 | return; |
| 253 | } |
| 254 | |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 255 | static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port, |
| 256 | const unsigned char *buf, int count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | { |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 258 | struct usb_serial *serial = port->serial; |
| 259 | struct usb_serial_port *wport = serial->port[1]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 260 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 261 | struct omninet_data *od = usb_get_serial_port_data(port); |
| 262 | struct omninet_header *header = (struct omninet_header *) |
| 263 | wport->write_urb->transfer_buffer; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 264 | |
| 265 | int result; |
| 266 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 267 | dbg("%s - port %d", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 268 | |
| 269 | if (count == 0) { |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 270 | dbg("%s - write request of 0 bytes", __func__); |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 271 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 272 | } |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 273 | |
Peter Zijlstra | e81ee63 | 2006-09-25 12:51:41 +0200 | [diff] [blame] | 274 | spin_lock_bh(&wport->lock); |
Greg Kroah-Hartman | df3fccb | 2006-05-02 08:44:45 +0200 | [diff] [blame] | 275 | if (wport->write_urb_busy) { |
Peter Zijlstra | e81ee63 | 2006-09-25 12:51:41 +0200 | [diff] [blame] | 276 | spin_unlock_bh(&wport->lock); |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 277 | dbg("%s - already writing", __func__); |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 278 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 279 | } |
Greg Kroah-Hartman | df3fccb | 2006-05-02 08:44:45 +0200 | [diff] [blame] | 280 | wport->write_urb_busy = 1; |
Peter Zijlstra | e81ee63 | 2006-09-25 12:51:41 +0200 | [diff] [blame] | 281 | spin_unlock_bh(&wport->lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 282 | |
| 283 | count = (count > OMNINET_BULKOUTSIZE) ? OMNINET_BULKOUTSIZE : count; |
| 284 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 285 | memcpy(wport->write_urb->transfer_buffer + OMNINET_DATAOFFSET, |
| 286 | buf, count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 287 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 288 | usb_serial_debug_data(debug, &port->dev, __func__, count, |
| 289 | wport->write_urb->transfer_buffer); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | |
| 291 | header->oh_seq = od->od_outseq++; |
| 292 | header->oh_len = count; |
| 293 | header->oh_xxx = 0x03; |
| 294 | header->oh_pad = 0x00; |
| 295 | |
| 296 | /* send the data out the bulk port, always 64 bytes */ |
| 297 | wport->write_urb->transfer_buffer_length = 64; |
| 298 | |
| 299 | wport->write_urb->dev = serial->dev; |
| 300 | result = usb_submit_urb(wport->write_urb, GFP_ATOMIC); |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 301 | if (result) { |
Greg Kroah-Hartman | df3fccb | 2006-05-02 08:44:45 +0200 | [diff] [blame] | 302 | wport->write_urb_busy = 0; |
Greg Kroah-Hartman | 194343d | 2008-08-20 16:56:34 -0700 | [diff] [blame] | 303 | dev_err(&port->dev, |
| 304 | "%s - failed submitting write urb, error %d\n", |
| 305 | __func__, result); |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 306 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 307 | result = count; |
| 308 | |
| 309 | return result; |
| 310 | } |
| 311 | |
| 312 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 313 | static int omninet_write_room(struct tty_struct *tty) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | { |
Alan Cox | 95da310 | 2008-07-22 11:09:07 +0100 | [diff] [blame] | 315 | struct usb_serial_port *port = tty->driver_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 316 | struct usb_serial *serial = port->serial; |
| 317 | struct usb_serial_port *wport = serial->port[1]; |
| 318 | |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 319 | int room = 0; /* Default: no room */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | |
Alan Cox | a5b6f60 | 2008-04-08 17:16:06 +0100 | [diff] [blame] | 321 | /* FIXME: no consistent locking for write_urb_busy */ |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 322 | if (wport->write_urb_busy) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 323 | room = wport->bulk_out_size - OMNINET_HEADERLEN; |
| 324 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 325 | dbg("%s - returns %d", __func__, room); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 326 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 327 | return room; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 328 | } |
| 329 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 330 | static void omninet_write_bulk_callback(struct urb *urb) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | { |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 332 | /* struct omninet_header *header = (struct omninet_header *) |
| 333 | urb->transfer_buffer; */ |
Ming Lei | cdc9779 | 2008-02-24 18:41:47 +0800 | [diff] [blame] | 334 | struct usb_serial_port *port = urb->context; |
Greg Kroah-Hartman | fdc2deb | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 335 | int status = urb->status; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 336 | |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 337 | dbg("%s - port %0x\n", __func__, port->number); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 338 | |
Greg Kroah-Hartman | 507ca9b | 2005-04-23 12:49:16 -0700 | [diff] [blame] | 339 | port->write_urb_busy = 0; |
Greg Kroah-Hartman | fdc2deb | 2007-06-15 15:44:13 -0700 | [diff] [blame] | 340 | if (status) { |
| 341 | dbg("%s - nonzero write bulk status received: %d", |
Harvey Harrison | 441b62c | 2008-03-03 16:08:34 -0800 | [diff] [blame] | 342 | __func__, status); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 343 | return; |
| 344 | } |
| 345 | |
Pete Zaitcev | cf2c748 | 2006-05-22 21:58:49 -0700 | [diff] [blame] | 346 | usb_serial_port_softint(port); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 347 | } |
| 348 | |
| 349 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 350 | static void omninet_shutdown(struct usb_serial *serial) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | { |
Oliver Neukum | 5ec1862 | 2007-03-27 16:02:34 +0200 | [diff] [blame] | 352 | struct usb_serial_port *wport = serial->port[1]; |
| 353 | struct usb_serial_port *port = serial->port[0]; |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 354 | dbg("%s", __func__); |
Oliver Neukum | 5ec1862 | 2007-03-27 16:02:34 +0200 | [diff] [blame] | 355 | |
| 356 | usb_kill_urb(wport->write_urb); |
| 357 | kfree(usb_get_serial_port_data(port)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | } |
| 359 | |
| 360 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 361 | static int __init omninet_init(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | { |
| 363 | int retval; |
| 364 | retval = usb_serial_register(&zyxel_omninet_device); |
| 365 | if (retval) |
| 366 | goto failed_usb_serial_register; |
| 367 | retval = usb_register(&omninet_driver); |
| 368 | if (retval) |
| 369 | goto failed_usb_register; |
Greg Kroah-Hartman | c197a8d | 2008-08-18 13:21:04 -0700 | [diff] [blame] | 370 | printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":" |
| 371 | DRIVER_DESC "\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | return 0; |
| 373 | failed_usb_register: |
| 374 | usb_serial_deregister(&zyxel_omninet_device); |
| 375 | failed_usb_serial_register: |
| 376 | return retval; |
| 377 | } |
| 378 | |
| 379 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 380 | static void __exit omninet_exit(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 381 | { |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 382 | usb_deregister(&omninet_driver); |
| 383 | usb_serial_deregister(&zyxel_omninet_device); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 384 | } |
| 385 | |
| 386 | |
| 387 | module_init(omninet_init); |
| 388 | module_exit(omninet_exit); |
| 389 | |
Alan Cox | f89d0df | 2008-07-22 11:15:54 +0100 | [diff] [blame] | 390 | MODULE_AUTHOR(DRIVER_AUTHOR); |
| 391 | MODULE_DESCRIPTION(DRIVER_DESC); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 392 | MODULE_LICENSE("GPL"); |
| 393 | |
| 394 | module_param(debug, bool, S_IRUGO | S_IWUSR); |
| 395 | MODULE_PARM_DESC(debug, "Debug enabled or not"); |