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Greg Kroah-Hartman
authored and
Linus Torvalds
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Nov 17, 2005
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--- | ||
refs/heads/master: 2d117403ae4006eeeb9037b82e9ecd8b3b043584 | ||
refs/heads/master: bb833986674ce1fc1b237b3d81459511ad2df393 |
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/* | ||
* AnyData CDMA Serial USB driver | ||
* | ||
* Copyright (C) 2005 Greg Kroah-Hartman <gregkh@suse.de> | ||
* | ||
* 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. | ||
*/ | ||
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#include <linux/kernel.h> | ||
#include <linux/init.h> | ||
#include <linux/tty.h> | ||
#include <linux/module.h> | ||
#include <linux/usb.h> | ||
#include "usb-serial.h" | ||
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static struct usb_device_id id_table [] = { | ||
{ USB_DEVICE(0x16d5, 0x6501) }, /* AirData CDMA device */ | ||
{ }, | ||
}; | ||
MODULE_DEVICE_TABLE(usb, id_table); | ||
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/* if overridden by the user, then use their value for the size of the | ||
* read and write urbs */ | ||
static int buffer_size; | ||
static int debug; | ||
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static struct usb_driver anydata_driver = { | ||
.owner = THIS_MODULE, | ||
.name = "anydata", | ||
.probe = usb_serial_probe, | ||
.disconnect = usb_serial_disconnect, | ||
.id_table = id_table, | ||
}; | ||
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static int anydata_open(struct usb_serial_port *port, struct file *filp) | ||
{ | ||
char *buffer; | ||
int result = 0; | ||
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dbg("%s - port %d", __FUNCTION__, port->number); | ||
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if (buffer_size) { | ||
/* override the default buffer sizes */ | ||
buffer = kmalloc(buffer_size, GFP_KERNEL); | ||
if (!buffer) { | ||
dev_err(&port->dev, "%s - out of memory.\n", | ||
__FUNCTION__); | ||
return -ENOMEM; | ||
} | ||
kfree (port->read_urb->transfer_buffer); | ||
port->read_urb->transfer_buffer = buffer; | ||
port->read_urb->transfer_buffer_length = buffer_size; | ||
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buffer = kmalloc(buffer_size, GFP_KERNEL); | ||
if (!buffer) { | ||
dev_err(&port->dev, "%s - out of memory.\n", | ||
__FUNCTION__); | ||
return -ENOMEM; | ||
} | ||
kfree (port->write_urb->transfer_buffer); | ||
port->write_urb->transfer_buffer = buffer; | ||
port->write_urb->transfer_buffer_length = buffer_size; | ||
port->bulk_out_size = buffer_size; | ||
} | ||
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/* Start reading from the device */ | ||
usb_fill_bulk_urb(port->read_urb, port->serial->dev, | ||
usb_rcvbulkpipe(port->serial->dev, | ||
port->bulk_in_endpointAddress), | ||
port->read_urb->transfer_buffer, | ||
port->read_urb->transfer_buffer_length, | ||
usb_serial_generic_write_bulk_callback, port); | ||
result = usb_submit_urb(port->read_urb, GFP_KERNEL); | ||
if (result) | ||
dev_err(&port->dev, | ||
"%s - failed submitting read urb, error %d\n", | ||
__FUNCTION__, result); | ||
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return result; | ||
} | ||
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static struct usb_serial_driver anydata_device = { | ||
.driver = { | ||
.owner = THIS_MODULE, | ||
.name = "anydata", | ||
}, | ||
.id_table = id_table, | ||
.num_interrupt_in = NUM_DONT_CARE, | ||
.num_bulk_in = NUM_DONT_CARE, | ||
.num_bulk_out = NUM_DONT_CARE, | ||
.num_ports = 1, | ||
.open = anydata_open, | ||
}; | ||
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static int __init anydata_init(void) | ||
{ | ||
int retval; | ||
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retval = usb_serial_register(&anydata_device); | ||
if (retval) | ||
return retval; | ||
retval = usb_register(&anydata_driver); | ||
if (retval) | ||
usb_serial_deregister(&anydata_device); | ||
return retval; | ||
} | ||
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static void __exit anydata_exit(void) | ||
{ | ||
usb_deregister(&anydata_driver); | ||
usb_serial_deregister(&anydata_device); | ||
} | ||
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module_init(anydata_init); | ||
module_exit(anydata_exit); | ||
MODULE_LICENSE("GPL"); | ||
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module_param(debug, bool, S_IRUGO | S_IWUSR); | ||
MODULE_PARM_DESC(debug, "Debug enabled or not"); | ||
module_param(buffer_size, int, 0); | ||
MODULE_PARM_DESC(buffer_size, "Size of the transfer buffers"); |
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