keyspan_pda.c
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上传日期:2013-04-10
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- /*
- * USB Keyspan PDA / Xircom / Entregra Converter driver
- *
- * Copyright (c) 1999 - 2001 Greg Kroah-Hartman <greg@kroah.com>
- * Copyright (c) 1999, 2000 Brian Warner <warner@lothar.com>
- * Copyright (c) 2000 Al Borchers <borchers@steinerpoint.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * See Documentation/usb/usb-serial.txt for more information on using this driver
- *
- * (09/07/2001) gkh
- * cleaned up the Xircom support. Added ids for Entregra device which is
- * the same as the Xircom device. Enabled the code to be compiled for
- * either Xircom or Keyspan devices.
- *
- * (08/11/2001) Cristian M. Craciunescu
- * support for Xircom PGSDB9
- *
- * (05/31/2001) gkh
- * switched from using spinlock to a semaphore, which fixes lots of problems.
- *
- * (04/08/2001) gb
- * Identify version on module load.
- *
- * (11/01/2000) Adam J. Richter
- * usb_device_id table support
- *
- * (10/05/2000) gkh
- * Fixed bug with urb->dev not being set properly, now that the usb
- * core needs it.
- *
- * (08/28/2000) gkh
- * Added locks for SMP safeness.
- * Fixed MOD_INC and MOD_DEC logic and the ability to open a port more
- * than once.
- *
- * (07/20/2000) borchers
- * - keyspan_pda_write no longer sleeps if it is called on interrupt time;
- * PPP and the line discipline with stty echo on can call write on
- * interrupt time and this would cause an oops if write slept
- * - if keyspan_pda_write is in an interrupt, it will not call
- * usb_control_msg (which sleeps) to query the room in the device
- * buffer, it simply uses the current room value it has
- * - if the urb is busy or if it is throttled keyspan_pda_write just
- * returns 0, rather than sleeping to wait for this to change; the
- * write_chan code in n_tty.c will sleep if needed before calling
- * keyspan_pda_write again
- * - if the device needs to be unthrottled, write now queues up the
- * call to usb_control_msg (which sleeps) to unthrottle the device
- * - the wakeups from keyspan_pda_write_bulk_callback are queued rather
- * than done directly from the callback to avoid the race in write_chan
- * - keyspan_pda_chars_in_buffer also indicates its buffer is full if the
- * urb status is -EINPROGRESS, meaning it cannot write at the moment
- *
- * (07/19/2000) gkh
- * Added module_init and module_exit functions to handle the fact that this
- * driver is a loadable module now.
- *
- * (03/26/2000) gkh
- * Split driver up into device specific pieces.
- *
- */
- #include <linux/config.h>
- #include <linux/kernel.h>
- #include <linux/errno.h>
- #include <linux/init.h>
- #include <linux/slab.h>
- #include <linux/tty.h>
- #include <linux/tty_driver.h>
- #include <linux/tty_flip.h>
- #include <linux/module.h>
- #include <linux/spinlock.h>
- #include <linux/tqueue.h>
- #include <asm/uaccess.h>
- #include <linux/usb.h>
- #ifdef CONFIG_USB_SERIAL_DEBUG
- static int debug = 1;
- #else
- static int debug;
- #endif
- struct ezusb_hex_record {
- __u16 address;
- __u8 data_size;
- __u8 data[16];
- };
- /* make a simple define to handle if we are compiling keyspan_pda or xircom support */
- #if defined(CONFIG_USB_SERIAL_KEYSPAN_PDA) || defined(CONFIG_USB_SERIAL_KEYSPAN_PDA_MODULE)
- #define KEYSPAN
- #else
- #undef KEYSPAN
- #endif
- #if defined(CONFIG_USB_SERIAL_XIRCOM) || defined(CONFIG_USB_SERIAL_XIRCOM_MODULE)
- #define XIRCOM
- #else
- #undef XIRCOM
- #endif
- #ifdef KEYSPAN
- #include "keyspan_pda_fw.h"
- #endif
- #ifdef XIRCOM
- #include "xircom_pgs_fw.h"
- #endif
- #include "usb-serial.h"
- /*
- * Version Information
- */
- #define DRIVER_VERSION "v1.1"
- #define DRIVER_AUTHOR "Brian Warner <warner@lothar.com>"
- #define DRIVER_DESC "USB Keyspan PDA Converter driver"
- struct keyspan_pda_private {
- int tx_room;
- int tx_throttled;
- struct tq_struct wakeup_task;
- struct tq_struct unthrottle_task;
- };
- #define KEYSPAN_VENDOR_ID 0x06cd
- #define KEYSPAN_PDA_FAKE_ID 0x0103
- #define KEYSPAN_PDA_ID 0x0104 /* no clue */
- /* For Xircom PGSDB9 and older Entregra version of the same device */
- #define XIRCOM_VENDOR_ID 0x085a
- #define XIRCOM_FAKE_ID 0x8027
- #define ENTREGRA_VENDOR_ID 0x1645
- #define ENTREGRA_FAKE_ID 0x8093
- static __devinitdata struct usb_device_id id_table_combined [] = {
- #ifdef KEYSPAN
- { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
- #endif
- #ifdef XIRCOM
- { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
- { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
- #endif
- { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
- { } /* Terminating entry */
- };
- MODULE_DEVICE_TABLE (usb, id_table_combined);
- static struct usb_device_id id_table_std [] = {
- { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_ID) },
- { } /* Terminating entry */
- };
- #ifdef KEYSPAN
- static struct usb_device_id id_table_fake [] = {
- { USB_DEVICE(KEYSPAN_VENDOR_ID, KEYSPAN_PDA_FAKE_ID) },
- { } /* Terminating entry */
- };
- #endif
- #ifdef XIRCOM
- static struct usb_device_id id_table_fake_xircom [] = {
- { USB_DEVICE(XIRCOM_VENDOR_ID, XIRCOM_FAKE_ID) },
- { USB_DEVICE(ENTREGRA_VENDOR_ID, ENTREGRA_FAKE_ID) },
- { }
- };
- #endif
- static void keyspan_pda_wakeup_write( struct usb_serial_port *port )
- {
- struct tty_struct *tty = port->tty;
- /* wake up port processes */
- wake_up_interruptible( &port->write_wait );
- /* wake up line discipline */
- if( (tty->flags & (1 << TTY_DO_WRITE_WAKEUP))
- && tty->ldisc.write_wakeup )
- (tty->ldisc.write_wakeup)(tty);
- /* wake up other tty processes */
- wake_up_interruptible( &tty->write_wait );
- /* For 2.2.16 backport -- wake_up_interruptible( &tty->poll_wait ); */
- }
- static void keyspan_pda_request_unthrottle( struct usb_serial *serial )
- {
- int result;
- dbg(" request_unthrottle");
- /* ask the device to tell us when the tx buffer becomes
- sufficiently empty */
- result = usb_control_msg(serial->dev,
- usb_sndctrlpipe(serial->dev, 0),
- 7, /* request_unthrottle */
- USB_TYPE_VENDOR | USB_RECIP_INTERFACE
- | USB_DIR_OUT,
- 16, /* value: threshold */
- 0, /* index */
- NULL,
- 0,
- 2*HZ);
- if (result < 0)
- dbg("%s - error %d from usb_control_msg",
- __FUNCTION__, result);
- }
- static void keyspan_pda_rx_interrupt (struct urb *urb)
- {
- struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
- struct usb_serial *serial;
- struct tty_struct *tty;
- unsigned char *data = urb->transfer_buffer;
- int i;
- struct keyspan_pda_private *priv;
- priv = (struct keyspan_pda_private *)(port->private);
- /* the urb might have been killed. */
- if (urb->status)
- return;
-
- if (port_paranoia_check (port, "keyspan_pda_rx_interrupt")) {
- return;
- }
- serial = port->serial;
- if (serial_paranoia_check (serial, "keyspan_pda_rx_interrupt")) {
- return;
- }
-
- /* see if the message is data or a status interrupt */
- switch (data[0]) {
- case 0:
- /* rest of message is rx data */
- if (urb->actual_length) {
- tty = serial->port[0].tty;
- for (i = 1; i < urb->actual_length ; ++i) {
- tty_insert_flip_char(tty, data[i], 0);
- }
- tty_flip_buffer_push(tty);
- }
- break;
- case 1:
- /* status interrupt */
- dbg(" rx int, d1=%d, d2=%d", data[1], data[2]);
- switch (data[1]) {
- case 1: /* modemline change */
- break;
- case 2: /* tx unthrottle interrupt */
- tty = serial->port[0].tty;
- priv->tx_throttled = 0;
- /* queue up a wakeup at scheduler time */
- schedule_task(&priv->wakeup_task);
- break;
- default:
- break;
- }
- break;
- default:
- break;
- }
- /* INT urbs are automatically re-submitted */
- }
- static void keyspan_pda_rx_throttle (struct usb_serial_port *port)
- {
- /* stop receiving characters. We just turn off the URB request, and
- let chars pile up in the device. If we're doing hardware
- flowcontrol, the device will signal the other end when its buffer
- fills up. If we're doing XON/XOFF, this would be a good time to
- send an XOFF, although it might make sense to foist that off
- upon the device too. */
- dbg("keyspan_pda_rx_throttle port %d", port->number);
- usb_unlink_urb(port->interrupt_in_urb);
- }
- static void keyspan_pda_rx_unthrottle (struct usb_serial_port *port)
- {
- /* just restart the receive interrupt URB */
- dbg("keyspan_pda_rx_unthrottle port %d", port->number);
- port->interrupt_in_urb->dev = port->serial->dev;
- if (usb_submit_urb(port->interrupt_in_urb))
- dbg(" usb_submit_urb(read urb) failed");
- return;
- }
- static int keyspan_pda_setbaud (struct usb_serial *serial, int baud)
- {
- int rc;
- int bindex;
- switch(baud) {
- case 110: bindex = 0; break;
- case 300: bindex = 1; break;
- case 1200: bindex = 2; break;
- case 2400: bindex = 3; break;
- case 4800: bindex = 4; break;
- case 9600: bindex = 5; break;
- case 19200: bindex = 6; break;
- case 38400: bindex = 7; break;
- case 57600: bindex = 8; break;
- case 115200: bindex = 9; break;
- default: return -EINVAL;
- }
- /* rather than figure out how to sleep while waiting for this
- to complete, I just use the "legacy" API. */
- rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- 0, /* set baud */
- USB_TYPE_VENDOR
- | USB_RECIP_INTERFACE
- | USB_DIR_OUT, /* type */
- bindex, /* value */
- 0, /* index */
- NULL, /* &data */
- 0, /* size */
- 2*HZ); /* timeout */
- return(rc);
- }
- static void keyspan_pda_break_ctl (struct usb_serial_port *port, int break_state)
- {
- struct usb_serial *serial = port->serial;
- int value;
- int result;
- if (break_state == -1)
- value = 1; /* start break */
- else
- value = 0; /* clear break */
- result = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- 4, /* set break */
- USB_TYPE_VENDOR | USB_RECIP_INTERFACE | USB_DIR_OUT,
- value, 0, NULL, 0, 2*HZ);
- if (result < 0)
- dbg("%s - error %d from usb_control_msg",
- __FUNCTION__, result);
- /* there is something funky about this.. the TCSBRK that 'cu' performs
- ought to translate into a break_ctl(-1),break_ctl(0) pair HZ/4
- seconds apart, but it feels like the break sent isn't as long as it
- is on /dev/ttyS0 */
- }
- static void keyspan_pda_set_termios (struct usb_serial_port *port,
- struct termios *old_termios)
- {
- struct usb_serial *serial = port->serial;
- unsigned int cflag = port->tty->termios->c_cflag;
- /* cflag specifies lots of stuff: number of stop bits, parity, number
- of data bits, baud. What can the device actually handle?:
- CSTOPB (1 stop bit or 2)
- PARENB (parity)
- CSIZE (5bit .. 8bit)
- There is minimal hw support for parity (a PSW bit seems to hold the
- parity of whatever is in the accumulator). The UART either deals
- with 10 bits (start, 8 data, stop) or 11 bits (start, 8 data,
- 1 special, stop). So, with firmware changes, we could do:
- 8N1: 10 bit
- 8N2: 11 bit, extra bit always (mark?)
- 8[EOMS]1: 11 bit, extra bit is parity
- 7[EOMS]1: 10 bit, b0/b7 is parity
- 7[EOMS]2: 11 bit, b0/b7 is parity, extra bit always (mark?)
- HW flow control is dictated by the tty->termios->c_cflags & CRTSCTS
- bit.
- For now, just do baud. */
- switch (cflag & CBAUD) {
- /* we could support more values here, just need to calculate
- the necessary divisors in the firmware. <asm/termbits.h>
- has the Bnnn constants. */
- case B110: keyspan_pda_setbaud(serial, 110); break;
- case B300: keyspan_pda_setbaud(serial, 300); break;
- case B1200: keyspan_pda_setbaud(serial, 1200); break;
- case B2400: keyspan_pda_setbaud(serial, 2400); break;
- case B4800: keyspan_pda_setbaud(serial, 4800); break;
- case B9600: keyspan_pda_setbaud(serial, 9600); break;
- case B19200: keyspan_pda_setbaud(serial, 19200); break;
- case B38400: keyspan_pda_setbaud(serial, 38400); break;
- case B57600: keyspan_pda_setbaud(serial, 57600); break;
- case B115200: keyspan_pda_setbaud(serial, 115200); break;
- default: dbg("can't handle requested baud rate"); break;
- }
- }
- /* modem control pins: DTR and RTS are outputs and can be controlled.
- DCD, RI, DSR, CTS are inputs and can be read. All outputs can also be
- read. The byte passed is: DTR(b7) DCD RI DSR CTS RTS(b2) unused unused */
- static int keyspan_pda_get_modem_info(struct usb_serial *serial,
- unsigned char *value)
- {
- int rc;
- unsigned char data;
- rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- 3, /* get pins */
- USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_IN,
- 0, 0, &data, 1, 2*HZ);
- if (rc > 0)
- *value = data;
- return rc;
- }
- static int keyspan_pda_set_modem_info(struct usb_serial *serial,
- unsigned char value)
- {
- int rc;
- rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- 3, /* set pins */
- USB_TYPE_VENDOR|USB_RECIP_INTERFACE|USB_DIR_OUT,
- value, 0, NULL, 0, 2*HZ);
- return rc;
- }
- static int keyspan_pda_ioctl(struct usb_serial_port *port, struct file *file,
- unsigned int cmd, unsigned long arg)
- {
- struct usb_serial *serial = port->serial;
- int rc;
- unsigned int value;
- unsigned char status, mask;
- switch (cmd) {
- case TIOCMGET: /* get modem pins state */
- rc = keyspan_pda_get_modem_info(serial, &status);
- if (rc < 0)
- return rc;
- value =
- ((status & (1<<7)) ? TIOCM_DTR : 0) |
- ((status & (1<<6)) ? TIOCM_CAR : 0) |
- ((status & (1<<5)) ? TIOCM_RNG : 0) |
- ((status & (1<<4)) ? TIOCM_DSR : 0) |
- ((status & (1<<3)) ? TIOCM_CTS : 0) |
- ((status & (1<<2)) ? TIOCM_RTS : 0);
- if (copy_to_user((unsigned int *)arg, &value, sizeof(int)))
- return -EFAULT;
- return 0;
- case TIOCMSET: /* set a state as returned by MGET */
- if (copy_from_user(&value, (unsigned int *)arg, sizeof(int)))
- return -EFAULT;
- status =
- ((value & TIOCM_DTR) ? (1<<7) : 0) |
- ((value & TIOCM_CAR) ? (1<<6) : 0) |
- ((value & TIOCM_RNG) ? (1<<5) : 0) |
- ((value & TIOCM_DSR) ? (1<<4) : 0) |
- ((value & TIOCM_CTS) ? (1<<3) : 0) |
- ((value & TIOCM_RTS) ? (1<<2) : 0);
- rc = keyspan_pda_set_modem_info(serial, status);
- if (rc < 0)
- return rc;
- return 0;
- case TIOCMBIS: /* set bits in bitmask <arg> */
- case TIOCMBIC: /* clear bits from bitmask <arg> */
- if (copy_from_user(&value, (unsigned int *)arg, sizeof(int)))
- return -EFAULT;
- rc = keyspan_pda_get_modem_info(serial, &status);
- if (rc < 0)
- return rc;
- mask =
- ((value & TIOCM_RTS) ? (1<<2) : 0) |
- ((value & TIOCM_DTR) ? (1<<7) : 0);
- if (cmd == TIOCMBIS)
- status |= mask;
- else
- status &= ~mask;
- rc = keyspan_pda_set_modem_info(serial, status);
- if (rc < 0)
- return rc;
- return 0;
- case TIOCMIWAIT:
- /* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/
- /* TODO */
- case TIOCGICOUNT:
- /* return count of modemline transitions */
- return 0; /* TODO */
- }
-
- return -ENOIOCTLCMD;
- }
- static int keyspan_pda_write(struct usb_serial_port *port, int from_user,
- const unsigned char *buf, int count)
- {
- struct usb_serial *serial = port->serial;
- int request_unthrottle = 0;
- int rc = 0;
- struct keyspan_pda_private *priv;
- priv = (struct keyspan_pda_private *)(port->private);
- /* guess how much room is left in the device's ring buffer, and if we
- want to send more than that, check first, updating our notion of
- what is left. If our write will result in no room left, ask the
- device to give us an interrupt when the room available rises above
- a threshold, and hold off all writers (eventually, those using
- select() or poll() too) until we receive that unthrottle interrupt.
- Block if we can't write anything at all, otherwise write as much as
- we can. */
- dbg("keyspan_pda_write(%d)",count);
- if (count == 0) {
- dbg(" write request of 0 bytes");
- return (0);
- }
- /* we might block because of:
- the TX urb is in-flight (wait until it completes)
- the device is full (wait until it says there is room)
- */
- if (port->write_urb->status == -EINPROGRESS || priv->tx_throttled ) {
- return( 0 );
- }
- /* At this point the URB is in our control, nobody else can submit it
- again (the only sudden transition was the one from EINPROGRESS to
- finished). Also, the tx process is not throttled. So we are
- ready to write. */
- count = (count > port->bulk_out_size) ? port->bulk_out_size : count;
- /* Check if we might overrun the Tx buffer. If so, ask the
- device how much room it really has. This is done only on
- scheduler time, since usb_control_msg() sleeps. */
- if (count > priv->tx_room && !in_interrupt()) {
- unsigned char room;
- rc = usb_control_msg(serial->dev,
- usb_rcvctrlpipe(serial->dev, 0),
- 6, /* write_room */
- USB_TYPE_VENDOR | USB_RECIP_INTERFACE
- | USB_DIR_IN,
- 0, /* value: 0 means "remaining room" */
- 0, /* index */
- &room,
- 1,
- 2*HZ);
- if (rc < 0) {
- dbg(" roomquery failed");
- goto exit;
- }
- if (rc == 0) {
- dbg(" roomquery returned 0 bytes");
- rc = -EIO; /* device didn't return any data */
- goto exit;
- }
- dbg(" roomquery says %d", room);
- priv->tx_room = room;
- }
- if (count > priv->tx_room) {
- /* we're about to completely fill the Tx buffer, so
- we'll be throttled afterwards. */
- count = priv->tx_room;
- request_unthrottle = 1;
- }
- if (count) {
- /* now transfer data */
- if (from_user) {
- if( copy_from_user(port->write_urb->transfer_buffer,
- buf, count) ) {
- rc = -EFAULT;
- goto exit;
- }
- }
- else {
- memcpy (port->write_urb->transfer_buffer, buf, count);
- }
- /* send the data out the bulk port */
- port->write_urb->transfer_buffer_length = count;
-
- priv->tx_room -= count;
- port->write_urb->dev = port->serial->dev;
- rc = usb_submit_urb(port->write_urb);
- if (rc) {
- dbg(" usb_submit_urb(write bulk) failed");
- goto exit;
- }
- }
- else {
- /* There wasn't any room left, so we are throttled until
- the buffer empties a bit */
- request_unthrottle = 1;
- }
- if (request_unthrottle) {
- priv->tx_throttled = 1; /* block writers */
- schedule_task(&priv->unthrottle_task);
- }
- rc = count;
- exit:
- return rc;
- }
- static void keyspan_pda_write_bulk_callback (struct urb *urb)
- {
- struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
- struct usb_serial *serial;
- struct keyspan_pda_private *priv;
- priv = (struct keyspan_pda_private *)(port->private);
- if (port_paranoia_check (port, "keyspan_pda_rx_interrupt")) {
- return;
- }
- serial = port->serial;
- if (serial_paranoia_check (serial, "keyspan_pda_rx_interrupt")) {
- return;
- }
-
- /* queue up a wakeup at scheduler time */
- schedule_task(&priv->wakeup_task);
- }
- static int keyspan_pda_write_room (struct usb_serial_port *port)
- {
- struct keyspan_pda_private *priv;
- priv = (struct keyspan_pda_private *)(port->private);
- /* used by n_tty.c for processing of tabs and such. Giving it our
- conservative guess is probably good enough, but needs testing by
- running a console through the device. */
- return (priv->tx_room);
- }
- static int keyspan_pda_chars_in_buffer (struct usb_serial_port *port)
- {
- struct keyspan_pda_private *priv;
- priv = (struct keyspan_pda_private *)(port->private);
-
- /* when throttled, return at least WAKEUP_CHARS to tell select() (via
- n_tty.c:normal_poll() ) that we're not writeable. */
- if( port->write_urb->status == -EINPROGRESS || priv->tx_throttled )
- return 256;
- return 0;
- }
- static int keyspan_pda_open (struct usb_serial_port *port, struct file *filp)
- {
- struct usb_serial *serial = port->serial;
- unsigned char room;
- int rc = 0;
- struct keyspan_pda_private *priv;
- /* find out how much room is in the Tx ring */
- rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- 6, /* write_room */
- USB_TYPE_VENDOR | USB_RECIP_INTERFACE
- | USB_DIR_IN,
- 0, /* value */
- 0, /* index */
- &room,
- 1,
- 2*HZ);
- if (rc < 0) {
- dbg("%s - roomquery failed", __FUNCTION__);
- goto error;
- }
- if (rc == 0) {
- dbg("%s - roomquery returned 0 bytes", __FUNCTION__);
- rc = -EIO;
- goto error;
- }
- priv = (struct keyspan_pda_private *)(port->private);
- priv->tx_room = room;
- priv->tx_throttled = room ? 0 : 1;
- /* the normal serial device seems to always turn on DTR and RTS here,
- so do the same */
- if (port->tty->termios->c_cflag & CBAUD)
- keyspan_pda_set_modem_info(serial, (1<<7) | (1<<2) );
- else
- keyspan_pda_set_modem_info(serial, 0);
- /*Start reading from the device*/
- port->interrupt_in_urb->dev = serial->dev;
- rc = usb_submit_urb(port->interrupt_in_urb);
- if (rc) {
- dbg("%s - usb_submit_urb(read int) failed", __FUNCTION__);
- goto error;
- }
- error:
- return rc;
- }
- static void keyspan_pda_close(struct usb_serial_port *port, struct file *filp)
- {
- struct usb_serial *serial = port->serial;
- if (serial->dev) {
- /* the normal serial device seems to always shut off DTR and RTS now */
- if (port->tty->termios->c_cflag & HUPCL)
- keyspan_pda_set_modem_info(serial, 0);
- /* shutdown our bulk reads and writes */
- usb_unlink_urb (port->write_urb);
- usb_unlink_urb (port->interrupt_in_urb);
- }
- }
- /* download the firmware to a "fake" device (pre-renumeration) */
- static int keyspan_pda_fake_startup (struct usb_serial *serial)
- {
- int response;
- const struct ezusb_hex_record *record = NULL;
- /* download the firmware here ... */
- response = ezusb_set_reset(serial, 1);
- #ifdef KEYSPAN
- if (serial->dev->descriptor.idVendor == KEYSPAN_VENDOR_ID)
- record = &keyspan_pda_firmware[0];
- #endif
- #ifdef XIRCOM
- if ((serial->dev->descriptor.idVendor == XIRCOM_VENDOR_ID) ||
- (serial->dev->descriptor.idVendor == ENTREGRA_VENDOR_ID))
- record = &xircom_pgs_firmware[0];
- #endif
- if (record == NULL) {
- err("%s: unknown vendor, aborting.", __FUNCTION__);
- return -ENODEV;
- }
- while(record->address != 0xffff) {
- response = ezusb_writememory(serial, record->address,
- (unsigned char *)record->data,
- record->data_size, 0xa0);
- if (response < 0) {
- err("ezusb_writememory failed for Keyspan PDA "
- "firmware (%d %04X %p %d)",
- response,
- record->address, record->data, record->data_size);
- break;
- }
- record++;
- }
- /* bring device out of reset. Renumeration will occur in a moment
- and the new device will bind to the real driver */
- response = ezusb_set_reset(serial, 0);
- /* we want this device to fail to have a driver assigned to it. */
- return (1);
- }
- static int keyspan_pda_startup (struct usb_serial *serial)
- {
- struct keyspan_pda_private *priv;
- /* allocate the private data structures for all ports. Well, for all
- one ports. */
- priv = serial->port[0].private
- = kmalloc(sizeof(struct keyspan_pda_private), GFP_KERNEL);
- if (!priv)
- return (1); /* error */
- init_waitqueue_head(&serial->port[0].write_wait);
- INIT_LIST_HEAD(&priv->wakeup_task.list);
- priv->wakeup_task.sync = 0;
- priv->wakeup_task.routine = (void *)keyspan_pda_wakeup_write;
- priv->wakeup_task.data = (void *)(&serial->port[0]);
- INIT_LIST_HEAD(&priv->unthrottle_task.list);
- priv->unthrottle_task.sync = 0;
- priv->unthrottle_task.routine = (void *)keyspan_pda_request_unthrottle;
- priv->unthrottle_task.data = (void *)(serial);
- return (0);
- }
- static void keyspan_pda_shutdown (struct usb_serial *serial)
- {
- dbg("%s", __FUNCTION__);
-
- kfree(serial->port[0].private);
- }
- #ifdef KEYSPAN
- static struct usb_serial_device_type keyspan_pda_fake_device = {
- .owner = THIS_MODULE,
- .name = "Keyspan PDA - (prerenumeration)",
- .id_table = id_table_fake,
- .num_interrupt_in = NUM_DONT_CARE,
- .num_bulk_in = NUM_DONT_CARE,
- .num_bulk_out = NUM_DONT_CARE,
- .num_ports = 1,
- .startup = keyspan_pda_fake_startup,
- };
- #endif
- #ifdef XIRCOM
- static struct usb_serial_device_type xircom_pgs_fake_device = {
- .owner = THIS_MODULE,
- .name = "Xircom / Entregra PGS - (prerenumeration)",
- .id_table = id_table_fake_xircom,
- .num_interrupt_in = NUM_DONT_CARE,
- .num_bulk_in = NUM_DONT_CARE,
- .num_bulk_out = NUM_DONT_CARE,
- .num_ports = 1,
- .startup = keyspan_pda_fake_startup,
- };
- #endif
- static struct usb_serial_device_type keyspan_pda_device = {
- .owner = THIS_MODULE,
- .name = "Keyspan PDA",
- .id_table = id_table_std,
- .num_interrupt_in = 1,
- .num_bulk_in = 0,
- .num_bulk_out = 1,
- .num_ports = 1,
- .open = keyspan_pda_open,
- .close = keyspan_pda_close,
- .write = keyspan_pda_write,
- .write_room = keyspan_pda_write_room,
- .write_bulk_callback = keyspan_pda_write_bulk_callback,
- .read_int_callback = keyspan_pda_rx_interrupt,
- .chars_in_buffer = keyspan_pda_chars_in_buffer,
- .throttle = keyspan_pda_rx_throttle,
- .unthrottle = keyspan_pda_rx_unthrottle,
- .ioctl = keyspan_pda_ioctl,
- .set_termios = keyspan_pda_set_termios,
- .break_ctl = keyspan_pda_break_ctl,
- .startup = keyspan_pda_startup,
- .shutdown = keyspan_pda_shutdown,
- };
- static int __init keyspan_pda_init (void)
- {
- usb_serial_register (&keyspan_pda_device);
- #ifdef KEYSPAN
- usb_serial_register (&keyspan_pda_fake_device);
- #endif
- #ifdef XIRCOM
- usb_serial_register (&xircom_pgs_fake_device);
- #endif
- info(DRIVER_DESC " " DRIVER_VERSION);
- return 0;
- }
- static void __exit keyspan_pda_exit (void)
- {
- usb_serial_deregister (&keyspan_pda_device);
- #ifdef KEYSPAN
- usb_serial_deregister (&keyspan_pda_fake_device);
- #endif
- #ifdef XIRCOM
- usb_serial_deregister (&xircom_pgs_fake_device);
- #endif
- }
- module_init(keyspan_pda_init);
- module_exit(keyspan_pda_exit);
- MODULE_AUTHOR( DRIVER_AUTHOR );
- MODULE_DESCRIPTION( DRIVER_DESC );
- MODULE_LICENSE("GPL");
- MODULE_PARM(debug, "i");
- MODULE_PARM_DESC(debug, "Debug enabled or not");