diff options
Diffstat (limited to 'drivers/usb/serial/airprime.c')
| -rw-r--r-- | drivers/usb/serial/airprime.c | 353 |
1 files changed, 0 insertions, 353 deletions
diff --git a/drivers/usb/serial/airprime.c b/drivers/usb/serial/airprime.c deleted file mode 100644 index 0798c14ce787..000000000000 --- a/drivers/usb/serial/airprime.c +++ /dev/null @@ -1,353 +0,0 @@ -/* - * AirPrime CDMA Wireless Serial USB driver - * - * Copyright (C) 2005-2006 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. - */ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/tty.h> -#include <linux/tty_flip.h> -#include <linux/module.h> -#include <linux/usb.h> -#include <linux/usb/serial.h> - -static struct usb_device_id id_table [] = { - { USB_DEVICE(0x0c88, 0x17da) }, /* Kyocera Wireless KPC650/Passport */ - { }, -}; -MODULE_DEVICE_TABLE(usb, id_table); - -#define URB_TRANSFER_BUFFER_SIZE 4096 -#define NUM_READ_URBS 4 -#define NUM_WRITE_URBS 4 -#define NUM_BULK_EPS 3 -#define MAX_BULK_EPS 6 - -/* if overridden by the user, then use their value for the size of the - * read and write urbs, and the number of endpoints */ -static int buffer_size = URB_TRANSFER_BUFFER_SIZE; -static int endpoints = NUM_BULK_EPS; -static int debug; -struct airprime_private { - spinlock_t lock; - int outstanding_urbs; - int throttled; - struct urb *read_urbp[NUM_READ_URBS]; - - /* Settings for the port */ - int rts_state; /* Handshaking pins (outputs) */ - int dtr_state; - int cts_state; /* Handshaking pins (inputs) */ - int dsr_state; - int dcd_state; - int ri_state; -}; - -static int airprime_send_setup(struct usb_serial_port *port) -{ - struct usb_serial *serial = port->serial; - struct airprime_private *priv; - - dbg("%s", __func__); - - if (port->number != 0) - return 0; - - priv = usb_get_serial_port_data(port); - - if (port->tty) { - int val = 0; - if (priv->dtr_state) - val |= 0x01; - if (priv->rts_state) - val |= 0x02; - - return usb_control_msg(serial->dev, - usb_rcvctrlpipe(serial->dev, 0), - 0x22, 0x21, val, 0, NULL, 0, - USB_CTRL_SET_TIMEOUT); - } - - return 0; -} - -static void airprime_read_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - unsigned char *data = urb->transfer_buffer; - struct tty_struct *tty; - int result; - int status = urb->status; - - dbg("%s - port %d", __func__, port->number); - - if (status) { - dbg("%s - nonzero read bulk status received: %d", - __func__, status); - return; - } - usb_serial_debug_data(debug, &port->dev, __func__, - urb->actual_length, data); - - tty = port->tty; - if (tty && urb->actual_length) { - tty_insert_flip_string(tty, data, urb->actual_length); - tty_flip_buffer_push(tty); - } - - result = usb_submit_urb(urb, GFP_ATOMIC); - if (result) - dev_err(&port->dev, - "%s - failed resubmitting read urb, error %d\n", - __func__, result); - return; -} - -static void airprime_write_bulk_callback(struct urb *urb) -{ - struct usb_serial_port *port = urb->context; - struct airprime_private *priv = usb_get_serial_port_data(port); - int status = urb->status; - unsigned long flags; - - dbg("%s - port %d", __func__, port->number); - - /* free up the transfer buffer, as usb_free_urb() does not do this */ - kfree(urb->transfer_buffer); - - if (status) - dbg("%s - nonzero write bulk status received: %d", - __func__, status); - spin_lock_irqsave(&priv->lock, flags); - --priv->outstanding_urbs; - spin_unlock_irqrestore(&priv->lock, flags); - - usb_serial_port_softint(port); -} - -static int airprime_open(struct usb_serial_port *port, struct file *filp) -{ - struct airprime_private *priv = usb_get_serial_port_data(port); - struct usb_serial *serial = port->serial; - struct urb *urb; - char *buffer = NULL; - int i; - int result = 0; - - dbg("%s - port %d", __func__, port->number); - - /* initialize our private data structure if it isn't already created */ - if (!priv) { - priv = kzalloc(sizeof(*priv), GFP_KERNEL); - if (!priv) { - result = -ENOMEM; - goto out; - } - spin_lock_init(&priv->lock); - usb_set_serial_port_data(port, priv); - } - - /* Set some sane defaults */ - priv->rts_state = 1; - priv->dtr_state = 1; - - for (i = 0; i < NUM_READ_URBS; ++i) { - buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!buffer) { - dev_err(&port->dev, "%s - out of memory.\n", - __func__); - result = -ENOMEM; - goto errout; - } - urb = usb_alloc_urb(0, GFP_KERNEL); - if (!urb) { - kfree(buffer); - dev_err(&port->dev, "%s - no more urbs?\n", - __func__); - result = -ENOMEM; - goto errout; - } - usb_fill_bulk_urb(urb, serial->dev, - usb_rcvbulkpipe(serial->dev, - port->bulk_out_endpointAddress), - buffer, buffer_size, - airprime_read_bulk_callback, port); - result = usb_submit_urb(urb, GFP_KERNEL); - if (result) { - usb_free_urb(urb); - kfree(buffer); - dev_err(&port->dev, - "%s - failed submitting read urb %d for port %d, error %d\n", - __func__, i, port->number, result); - goto errout; - } - /* remember this urb so we can kill it when the - port is closed */ - priv->read_urbp[i] = urb; - } - - airprime_send_setup(port); - - goto out; - - errout: - /* some error happened, cancel any submitted urbs and clean up - anything that got allocated successfully */ - - while (i-- != 0) { - urb = priv->read_urbp[i]; - buffer = urb->transfer_buffer; - usb_kill_urb(urb); - usb_free_urb(urb); - kfree(buffer); - } - - out: - return result; -} - -static void airprime_close(struct usb_serial_port *port, struct file *filp) -{ - struct airprime_private *priv = usb_get_serial_port_data(port); - int i; - - dbg("%s - port %d", __func__, port->number); - - priv->rts_state = 0; - priv->dtr_state = 0; - - mutex_lock(&port->serial->disc_mutex); - if (!port->serial->disconnected) - airprime_send_setup(port); - mutex_unlock(&port->serial->disc_mutex); - - for (i = 0; i < NUM_READ_URBS; ++i) { - usb_kill_urb(priv->read_urbp[i]); - kfree(priv->read_urbp[i]->transfer_buffer); - usb_free_urb(priv->read_urbp[i]); - } - - /* free up private structure */ - kfree(priv); - usb_set_serial_port_data(port, NULL); -} - -static int airprime_write(struct usb_serial_port *port, - const unsigned char *buf, int count) -{ - struct airprime_private *priv = usb_get_serial_port_data(port); - struct usb_serial *serial = port->serial; - struct urb *urb; - unsigned char *buffer; - unsigned long flags; - int status; - dbg("%s - port %d", __func__, port->number); - - spin_lock_irqsave(&priv->lock, flags); - if (priv->outstanding_urbs > NUM_WRITE_URBS) { - spin_unlock_irqrestore(&priv->lock, flags); - dbg("%s - write limit hit\n", __func__); - return 0; - } - spin_unlock_irqrestore(&priv->lock, flags); - buffer = kmalloc(count, GFP_ATOMIC); - if (!buffer) { - dev_err(&port->dev, "out of memory\n"); - return -ENOMEM; - } - urb = usb_alloc_urb(0, GFP_ATOMIC); - if (!urb) { - dev_err(&port->dev, "no more free urbs\n"); - kfree(buffer); - return -ENOMEM; - } - memcpy(buffer, buf, count); - - usb_serial_debug_data(debug, &port->dev, __func__, count, buffer); - - usb_fill_bulk_urb(urb, serial->dev, - usb_sndbulkpipe(serial->dev, - port->bulk_out_endpointAddress), - buffer, count, - airprime_write_bulk_callback, port); - - /* send it down the pipe */ - status = usb_submit_urb(urb, GFP_ATOMIC); - if (status) { - dev_err(&port->dev, - "%s - usb_submit_urb(write bulk) failed with status = %d\n", - __func__, status); - count = status; - kfree(buffer); - } else { - spin_lock_irqsave(&priv->lock, flags); - ++priv->outstanding_urbs; - spin_unlock_irqrestore(&priv->lock, flags); - } - /* we are done with this urb, so let the host driver - * really free it when it is finished with it */ - usb_free_urb(urb); - return count; -} - -static struct usb_driver airprime_driver = { - .name = "airprime", - .probe = usb_serial_probe, - .disconnect = usb_serial_disconnect, - .id_table = id_table, - .no_dynamic_id = 1, -}; - -static struct usb_serial_driver airprime_device = { - .driver = { - .owner = THIS_MODULE, - .name = "airprime", - }, - .usb_driver = &airprime_driver, - .id_table = id_table, - .open = airprime_open, - .close = airprime_close, - .write = airprime_write, -}; - -static int __init airprime_init(void) -{ - int retval; - - airprime_device.num_ports = endpoints; - if (endpoints < 0 || endpoints >= MAX_BULK_EPS) - airprime_device.num_ports = NUM_BULK_EPS; - - retval = usb_serial_register(&airprime_device); - if (retval) - return retval; - retval = usb_register(&airprime_driver); - if (retval) - usb_serial_deregister(&airprime_device); - return retval; -} - -static void __exit airprime_exit(void) -{ - dbg("%s", __func__); - - usb_deregister(&airprime_driver); - usb_serial_deregister(&airprime_device); -} - -module_init(airprime_init); -module_exit(airprime_exit); -MODULE_LICENSE("GPL"); - -module_param(debug, bool, S_IRUGO | S_IWUSR); -MODULE_PARM_DESC(debug, "Debug enabled"); -module_param(buffer_size, int, 0); -MODULE_PARM_DESC(buffer_size, - "Size of the transfer buffers in bytes (default 4096)"); -module_param(endpoints, int, 0); -MODULE_PARM_DESC(endpoints, "Number of bulk EPs to configure (default 3)"); |