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Diffstat (limited to 'drivers/usb/serial/usb-serial.c')
-rw-r--r--drivers/usb/serial/usb-serial.c378
1 files changed, 37 insertions, 341 deletions
diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c
index e77fbdfc782d..0c4881d18cd5 100644
--- a/drivers/usb/serial/usb-serial.c
+++ b/drivers/usb/serial/usb-serial.c
@@ -1,7 +1,7 @@
/*
* USB Serial Converter driver
*
- * Copyright (C) 1999 - 2004 Greg Kroah-Hartman (greg@kroah.com)
+ * Copyright (C) 1999 - 2005 Greg Kroah-Hartman (greg@kroah.com)
* Copyright (C) 2000 Peter Berger (pberger@brimson.com)
* Copyright (C) 2000 Al Borchers (borchers@steinerpoint.com)
*
@@ -9,316 +9,11 @@
* modify it under the terms of the GNU General Public License version
* 2 as published by the Free Software Foundation.
*
- * This driver was originally based on the ACM driver by Armin Fuerst (which was
+ * This driver was originally based on the ACM driver by Armin Fuerst (which was
* based on a driver by Brad Keryan)
*
* See Documentation/usb/usb-serial.txt for more information on using this driver
*
- * (12/10/2002) gkh
- * Split the ports off into their own struct device, and added a
- * usb-serial bus driver.
- *
- * (11/19/2002) gkh
- * removed a few #ifdefs for the generic code and cleaned up the failure
- * logic in initialization.
- *
- * (10/02/2002) gkh
- * moved the console code to console.c and out of this file.
- *
- * (06/05/2002) gkh
- * moved location of startup() call in serial_probe() until after all
- * of the port information and endpoints are initialized. This makes
- * things easier for some drivers.
- *
- * (04/10/2002) gkh
- * added serial_read_proc function which creates a
- * /proc/tty/driver/usb-serial file.
- *
- * (03/27/2002) gkh
- * Got USB serial console code working properly and merged into the main
- * version of the tree. Thanks to Randy Dunlap for the initial version
- * of this code, and for pushing me to finish it up.
- * The USB serial console works with any usb serial driver device.
- *
- * (03/21/2002) gkh
- * Moved all manipulation of port->open_count into the core. Now the
- * individual driver's open and close functions are called only when the
- * first open() and last close() is called. Making the drivers a bit
- * smaller and simpler.
- * Fixed a bug if a driver didn't have the owner field set.
- *
- * (02/26/2002) gkh
- * Moved all locking into the main serial_* functions, instead of having
- * the individual drivers have to grab the port semaphore. This should
- * reduce races.
- * Reworked the MOD_INC logic a bit to always increment and decrement, even
- * if the generic driver is being used.
- *
- * (10/10/2001) gkh
- * usb_serial_disconnect() now sets the serial->dev pointer is to NULL to
- * help prevent child drivers from accessing the device since it is now
- * gone.
- *
- * (09/13/2001) gkh
- * Moved generic driver initialize after we have registered with the USB
- * core. Thanks to Randy Dunlap for pointing this problem out.
- *
- * (07/03/2001) gkh
- * Fixed module paramater size. Thanks to John Brockmeyer for the pointer.
- * Fixed vendor and product getting defined through the MODULE_PARM macro
- * if the Generic driver wasn't compiled in.
- * Fixed problem with generic_shutdown() not being called for drivers that
- * don't have a shutdown() function.
- *
- * (06/06/2001) gkh
- * added evil hack that is needed for the prolific pl2303 device due to the
- * crazy way its endpoints are set up.
- *
- * (05/30/2001) gkh
- * switched from using spinlock to a semaphore, which fixes lots of problems.
- *
- * (04/08/2001) gb
- * Identify version on module load.
- *
- * 2001_02_05 gkh
- * Fixed buffer overflows bug with the generic serial driver. Thanks to
- * Todd Squires <squirest@ct0.com> for fixing this.
- *
- * (01/10/2001) gkh
- * Fixed bug where the generic serial adaptor grabbed _any_ device that was
- * offered to it.
- *
- * (12/12/2000) gkh
- * Removed MOD_INC and MOD_DEC from poll and disconnect functions, and
- * moved them to the serial_open and serial_close functions.
- * Also fixed bug with there not being a MOD_DEC for the generic driver
- * (thanks to Gary Brubaker for finding this.)
- *
- * (11/29/2000) gkh
- * Small NULL pointer initialization cleanup which saves a bit of disk image
- *
- * (11/01/2000) Adam J. Richter
- * instead of using idVendor/idProduct pairs, usb serial drivers
- * now identify their hardware interest with usb_device_id tables,
- * which they usually have anyhow for use with MODULE_DEVICE_TABLE.
- *
- * (10/05/2000) gkh
- * Fixed bug with urb->dev not being set properly, now that the usb
- * core needs it.
- *
- * (09/11/2000) gkh
- * Removed DEBUG #ifdefs with call to usb_serial_debug_data
- *
- * (08/28/2000) gkh
- * Added port_lock to port structure.
- * Added locks for SMP safeness to generic driver
- * Fixed the ability to open a generic device's port more than once.
- *
- * (07/23/2000) gkh
- * Added bulk_out_endpointAddress to port structure.
- *
- * (07/19/2000) gkh, pberger, and borchers
- * Modifications to allow usb-serial drivers to be modules.
- *
- * (07/03/2000) gkh
- * Added more debugging to serial_ioctl call
- *
- * (06/25/2000) gkh
- * Changed generic_write_bulk_callback to not call wake_up_interruptible
- * directly, but to have port_softint do it at a safer time.
- *
- * (06/23/2000) gkh
- * Cleaned up debugging statements in a quest to find UHCI timeout bug.
- *
- * (05/22/2000) gkh
- * Changed the makefile, enabling the big CONFIG_USB_SERIAL_SOMTHING to be
- * removed from the individual device source files.
- *
- * (05/03/2000) gkh
- * Added the Digi Acceleport driver from Al Borchers and Peter Berger.
- *
- * (05/02/2000) gkh
- * Changed devfs and tty register code to work properly now. This was based on
- * the ACM driver changes by Vojtech Pavlik.
- *
- * (04/27/2000) Ryan VanderBijl
- * Put calls to *_paranoia_checks into one function.
- *
- * (04/23/2000) gkh
- * Fixed bug that Randy Dunlap found for Generic devices with no bulk out ports.
- * Moved when the startup code printed out the devices that are supported.
- *
- * (04/19/2000) gkh
- * Added driver for ZyXEL omni.net lcd plus ISDN TA
- * Made startup info message specify which drivers were compiled in.
- *
- * (04/03/2000) gkh
- * Changed the probe process to remove the module unload races.
- * Changed where the tty layer gets initialized to have devfs work nicer.
- * Added initial devfs support.
- *
- * (03/26/2000) gkh
- * Split driver up into device specific pieces.
- *
- * (03/19/2000) gkh
- * Fixed oops that could happen when device was removed while a program
- * was talking to the device.
- * Removed the static urbs and now all urbs are created and destroyed
- * dynamically.
- * Reworked the internal interface. Now everything is based on the
- * usb_serial_port structure instead of the larger usb_serial structure.
- * This fixes the bug that a multiport device could not have more than
- * one port open at one time.
- *
- * (03/17/2000) gkh
- * Added config option for debugging messages.
- * Added patch for keyspan pda from Brian Warner.
- *
- * (03/06/2000) gkh
- * Added the keyspan pda code from Brian Warner <warner@lothar.com>
- * Moved a bunch of the port specific stuff into its own structure. This
- * is in anticipation of the true multiport devices (there's a bug if you
- * try to access more than one port of any multiport device right now)
- *
- * (02/21/2000) gkh
- * Made it so that any serial devices only have to specify which functions
- * they want to overload from the generic function calls (great,
- * inheritance in C, in a driver, just what I wanted...)
- * Added support for set_termios and ioctl function calls. No drivers take
- * advantage of this yet.
- * Removed the #ifdef MODULE, now there is no module specific code.
- * Cleaned up a few comments in usb-serial.h that were wrong (thanks again
- * to Miles Lott).
- * Small fix to get_free_serial.
- *
- * (02/14/2000) gkh
- * Removed the Belkin and Peracom functionality from the driver due to
- * the lack of support from the vendor, and me not wanting people to
- * accidenatly buy the device, expecting it to work with Linux.
- * Added read_bulk_callback and write_bulk_callback to the type structure
- * for the needs of the FTDI and WhiteHEAT driver.
- * Changed all reverences to FTDI to FTDI_SIO at the request of Bill
- * Ryder.
- * Changed the output urb size back to the max endpoint size to make
- * the ftdi_sio driver have it easier, and due to the fact that it didn't
- * really increase the speed any.
- *
- * (02/11/2000) gkh
- * Added VISOR_FUNCTION_CONSOLE to the visor startup function. This was a
- * patch from Miles Lott (milos@insync.net).
- * Fixed bug with not restoring the minor range that a device grabs, if
- * the startup function fails (thanks Miles for finding this).
- *
- * (02/05/2000) gkh
- * Added initial framework for the Keyspan PDA serial converter so that
- * Brian Warner has a place to put his code.
- * Made the ezusb specific functions generic enough that different
- * devices can use them (whiteheat and keyspan_pda both need them).
- * Split out a whole bunch of structure and other stuff to a separate
- * usb-serial.h file.
- * Made the Visor connection messages a little more understandable, now
- * that Miles Lott (milos@insync.net) has gotten the Generic channel to
- * work. Also made them always show up in the log file.
- *
- * (01/25/2000) gkh
- * Added initial framework for FTDI serial converter so that Bill Ryder
- * has a place to put his code.
- * Added the vendor specific info from Handspring. Now we can print out
- * informational debug messages as well as understand what is happening.
- *
- * (01/23/2000) gkh
- * Fixed problem of crash when trying to open a port that didn't have a
- * device assigned to it. Made the minor node finding a little smarter,
- * now it looks to find a continuous space for the new device.
- *
- * (01/21/2000) gkh
- * Fixed bug in visor_startup with patch from Miles Lott (milos@insync.net)
- * Fixed get_serial_by_minor which was all messed up for multi port
- * devices. Fixed multi port problem for generic devices. Now the number
- * of ports is determined by the number of bulk out endpoints for the
- * generic device.
- *
- * (01/19/2000) gkh
- * Removed lots of cruft that was around from the old (pre urb) driver
- * interface.
- * Made the serial_table dynamic. This should save lots of memory when
- * the number of minor nodes goes up to 256.
- * Added initial support for devices that have more than one port.
- * Added more debugging comments for the Visor, and added a needed
- * set_configuration call.
- *
- * (01/17/2000) gkh
- * Fixed the WhiteHEAT firmware (my processing tool had a bug)
- * and added new debug loader firmware for it.
- * Removed the put_char function as it isn't really needed.
- * Added visor startup commands as found by the Win98 dump.
- *
- * (01/13/2000) gkh
- * Fixed the vendor id for the generic driver to the one I meant it to be.
- *
- * (01/12/2000) gkh
- * Forget the version numbering...that's pretty useless...
- * Made the driver able to be compiled so that the user can select which
- * converter they want to use. This allows people who only want the Visor
- * support to not pay the memory size price of the WhiteHEAT.
- * Fixed bug where the generic driver (idVendor=0000 and idProduct=0000)
- * grabbed the root hub. Not good.
- *
- * version 0.4.0 (01/10/2000) gkh
- * Added whiteheat.h containing the firmware for the ConnectTech WhiteHEAT
- * device. Added startup function to allow firmware to be downloaded to
- * a device if it needs to be.
- * Added firmware download logic to the WhiteHEAT device.
- * Started to add #defines to split up the different drivers for potential
- * configuration option.
- *
- * version 0.3.1 (12/30/99) gkh
- * Fixed problems with urb for bulk out.
- * Added initial support for multiple sets of endpoints. This enables
- * the Handspring Visor to be attached successfully. Only the first
- * bulk in / bulk out endpoint pair is being used right now.
- *
- * version 0.3.0 (12/27/99) gkh
- * Added initial support for the Handspring Visor based on a patch from
- * Miles Lott (milos@sneety.insync.net)
- * Cleaned up the code a bunch and converted over to using urbs only.
- *
- * version 0.2.3 (12/21/99) gkh
- * Added initial support for the Connect Tech WhiteHEAT converter.
- * Incremented the number of ports in expectation of getting the
- * WhiteHEAT to work properly (4 ports per connection).
- * Added notification on insertion and removal of what port the
- * device is/was connected to (and what kind of device it was).
- *
- * version 0.2.2 (12/16/99) gkh
- * Changed major number to the new allocated number. We're legal now!
- *
- * version 0.2.1 (12/14/99) gkh
- * Fixed bug that happens when device node is opened when there isn't a
- * device attached to it. Thanks to marek@webdesign.no for noticing this.
- *
- * version 0.2.0 (11/10/99) gkh
- * Split up internals to make it easier to add different types of serial
- * converters to the code.
- * Added a "generic" driver that gets it's vendor and product id
- * from when the module is loaded. Thanks to David E. Nelson (dnelson@jump.net)
- * for the idea and sample code (from the usb scanner driver.)
- * Cleared up any licensing questions by releasing it under the GNU GPL.
- *
- * version 0.1.2 (10/25/99) gkh
- * Fixed bug in detecting device.
- *
- * version 0.1.1 (10/05/99) gkh
- * Changed the major number to not conflict with anything else.
- *
- * version 0.1 (09/28/99) gkh
- * Can recognize the two different devices and start up a read from
- * device when asked to. Writes also work. No control signals yet, this
- * all is vendor specific data (i.e. no spec), also no control for
- * different baud rates or other bit settings.
- * Currently we are using the same devid as the acm driver. This needs
- * to change.
- *
*/
#include <linux/config.h>
@@ -342,7 +37,6 @@
/*
* Version Information
*/
-#define DRIVER_VERSION "v2.0"
#define DRIVER_AUTHOR "Greg Kroah-Hartman, greg@kroah.com, http://www.kroah.com/linux/"
#define DRIVER_DESC "USB Serial Driver core"
@@ -427,7 +121,7 @@ static void destroy_serial(struct kref *kref)
serial = to_usb_serial(kref);
- dbg ("%s - %s", __FUNCTION__, serial->type->name);
+ dbg("%s - %s", __FUNCTION__, serial->type->description);
serial->type->shutdown(serial);
@@ -507,7 +201,7 @@ static int serial_open (struct tty_struct *tty, struct file * filp)
/* lock this module before we call it
* this may fail, which means we must bail out,
* safe because we are called with BKL held */
- if (!try_module_get(serial->type->owner)) {
+ if (!try_module_get(serial->type->driver.owner)) {
retval = -ENODEV;
goto bailout_kref_put;
}
@@ -522,7 +216,7 @@ static int serial_open (struct tty_struct *tty, struct file * filp)
return 0;
bailout_module_put:
- module_put(serial->type->owner);
+ module_put(serial->type->driver.owner);
bailout_kref_put:
kref_put(&serial->kref, destroy_serial);
port->open_count = 0;
@@ -553,7 +247,7 @@ static void serial_close(struct tty_struct *tty, struct file * filp)
port->tty = NULL;
}
- module_put(port->serial->type->owner);
+ module_put(port->serial->type->driver.owner);
}
kref_put(&port->serial->kref, destroy_serial);
@@ -711,16 +405,16 @@ static int serial_read_proc (char *page, char **start, off_t off, int count, int
char tmp[40];
dbg("%s", __FUNCTION__);
- length += sprintf (page, "usbserinfo:1.0 driver:%s\n", DRIVER_VERSION);
+ length += sprintf (page, "usbserinfo:1.0 driver:2.0\n");
for (i = 0; i < SERIAL_TTY_MINORS && length < PAGE_SIZE; ++i) {
serial = usb_serial_get_by_index(i);
if (serial == NULL)
continue;
length += sprintf (page+length, "%d:", i);
- if (serial->type->owner)
- length += sprintf (page+length, " module:%s", module_name(serial->type->owner));
- length += sprintf (page+length, " name:\"%s\"", serial->type->name);
+ if (serial->type->driver.owner)
+ length += sprintf (page+length, " module:%s", module_name(serial->type->driver.owner));
+ length += sprintf (page+length, " name:\"%s\"", serial->type->description);
length += sprintf (page+length, " vendor:%04x product:%04x",
le16_to_cpu(serial->dev->descriptor.idVendor),
le16_to_cpu(serial->dev->descriptor.idProduct));
@@ -823,7 +517,7 @@ static void port_release(struct device *dev)
static struct usb_serial * create_serial (struct usb_device *dev,
struct usb_interface *interface,
- struct usb_serial_device_type *type)
+ struct usb_serial_driver *driver)
{
struct usb_serial *serial;
@@ -834,22 +528,22 @@ static struct usb_serial * create_serial (struct usb_device *dev,
}
memset (serial, 0, sizeof(*serial));
serial->dev = usb_get_dev(dev);
- serial->type = type;
+ serial->type = driver;
serial->interface = interface;
kref_init(&serial->kref);
return serial;
}
-static struct usb_serial_device_type *search_serial_device(struct usb_interface *iface)
+static struct usb_serial_driver *search_serial_device(struct usb_interface *iface)
{
struct list_head *p;
const struct usb_device_id *id;
- struct usb_serial_device_type *t;
+ struct usb_serial_driver *t;
/* List trough know devices and see if the usb id matches */
list_for_each(p, &usb_serial_driver_list) {
- t = list_entry(p, struct usb_serial_device_type, driver_list);
+ t = list_entry(p, struct usb_serial_driver, driver_list);
id = usb_match_id(iface, t->id_table);
if (id != NULL) {
dbg("descriptor matches");
@@ -872,7 +566,7 @@ int usb_serial_probe(struct usb_interface *interface,
struct usb_endpoint_descriptor *interrupt_out_endpoint[MAX_NUM_PORTS];
struct usb_endpoint_descriptor *bulk_in_endpoint[MAX_NUM_PORTS];
struct usb_endpoint_descriptor *bulk_out_endpoint[MAX_NUM_PORTS];
- struct usb_serial_device_type *type = NULL;
+ struct usb_serial_driver *type = NULL;
int retval;
int minor;
int buffer_size;
@@ -900,7 +594,7 @@ int usb_serial_probe(struct usb_interface *interface,
if (type->probe) {
const struct usb_device_id *id;
- if (!try_module_get(type->owner)) {
+ if (!try_module_get(type->driver.owner)) {
dev_err(&interface->dev, "module get failed, exiting\n");
kfree (serial);
return -EIO;
@@ -908,7 +602,7 @@ int usb_serial_probe(struct usb_interface *interface,
id = usb_match_id(interface, type->id_table);
retval = type->probe(serial, id);
- module_put(type->owner);
+ module_put(type->driver.owner);
if (retval) {
dbg ("sub driver rejected device");
@@ -992,7 +686,7 @@ int usb_serial_probe(struct usb_interface *interface,
#endif
/* found all that we need */
- dev_info(&interface->dev, "%s converter detected\n", type->name);
+ dev_info(&interface->dev, "%s converter detected\n", type->description);
#ifdef CONFIG_USB_SERIAL_GENERIC
if (type == &usb_serial_generic_device) {
@@ -1007,13 +701,13 @@ int usb_serial_probe(struct usb_interface *interface,
if (!num_ports) {
/* if this device type has a calc_num_ports function, call it */
if (type->calc_num_ports) {
- if (!try_module_get(type->owner)) {
+ if (!try_module_get(type->driver.owner)) {
dev_err(&interface->dev, "module get failed, exiting\n");
kfree (serial);
return -EIO;
}
num_ports = type->calc_num_ports (serial);
- module_put(type->owner);
+ module_put(type->driver.owner);
}
if (!num_ports)
num_ports = type->num_ports;
@@ -1158,12 +852,12 @@ int usb_serial_probe(struct usb_interface *interface,
/* if this device type has an attach function, call it */
if (type->attach) {
- if (!try_module_get(type->owner)) {
+ if (!try_module_get(type->driver.owner)) {
dev_err(&interface->dev, "module get failed, exiting\n");
goto probe_error;
}
retval = type->attach (serial);
- module_put(type->owner);
+ module_put(type->driver.owner);
if (retval < 0)
goto probe_error;
if (retval > 0) {
@@ -1330,7 +1024,7 @@ static int __init usb_serial_init(void)
goto exit_generic;
}
- info(DRIVER_DESC " " DRIVER_VERSION);
+ info(DRIVER_DESC);
return result;
@@ -1375,7 +1069,7 @@ module_exit(usb_serial_exit);
} \
} while (0)
-static void fixup_generic(struct usb_serial_device_type *device)
+static void fixup_generic(struct usb_serial_driver *device)
{
set_to_generic_if_null(device, open);
set_to_generic_if_null(device, write);
@@ -1387,30 +1081,33 @@ static void fixup_generic(struct usb_serial_device_type *device)
set_to_generic_if_null(device, shutdown);
}
-int usb_serial_register(struct usb_serial_device_type *new_device)
+int usb_serial_register(struct usb_serial_driver *driver)
{
int retval;
- fixup_generic(new_device);
+ fixup_generic(driver);
+
+ if (!driver->description)
+ driver->description = driver->driver.name;
/* Add this device to our list of devices */
- list_add(&new_device->driver_list, &usb_serial_driver_list);
+ list_add(&driver->driver_list, &usb_serial_driver_list);
- retval = usb_serial_bus_register(new_device);
+ retval = usb_serial_bus_register(driver);
if (retval) {
- err("problem %d when registering driver %s", retval, new_device->name);
- list_del(&new_device->driver_list);
+ err("problem %d when registering driver %s", retval, driver->description);
+ list_del(&driver->driver_list);
}
else
- info("USB Serial support registered for %s", new_device->name);
+ info("USB Serial support registered for %s", driver->description);
return retval;
}
-void usb_serial_deregister(struct usb_serial_device_type *device)
+void usb_serial_deregister(struct usb_serial_driver *device)
{
- info("USB Serial deregistering driver %s", device->name);
+ info("USB Serial deregistering driver %s", device->description);
list_del(&device->driver_list);
usb_serial_bus_deregister(device);
}
@@ -1429,7 +1126,6 @@ EXPORT_SYMBOL_GPL(usb_serial_port_softint);
/* Module information */
MODULE_AUTHOR( DRIVER_AUTHOR );
MODULE_DESCRIPTION( DRIVER_DESC );
-MODULE_VERSION( DRIVER_VERSION );
MODULE_LICENSE("GPL");
module_param(debug, bool, S_IRUGO | S_IWUSR);
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