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/*
* KLSI KL5KUSB105 chip RS232 converter driver
*
* Copyright (C) 2001 Utz-Uwe Haus <haus@uuhaus.de>
*
* 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.
*
* All information about the device was acquired using SniffUSB ans snoopUSB
* on Windows98.
* It was written out of frustration with the PalmConnect USB Serial adapter
* sold by Palm Inc.
* Neither Palm, nor their contractor (MCCI) or their supplier (KLSI) provided
* information that was not already available.
*
* It seems that KLSI bought some silicon-design information from ScanLogic,
* whose SL11R processor is at the core of the KL5KUSB chipset from KLSI.
* KLSI has firmware available for their devices; it is probable that the
* firmware differs from that used by KLSI in their products. If you have an
* original KLSI device and can provide some information on it, I would be
* most interested in adding support for it here. If you have any information
* on the protocol used (or find errors in my reverse-engineered stuff), please
* let me know.
*
* The code was only tested with a PalmConnect USB adapter; if you
* are adventurous, try it with any KLSI-based device and let me know how it
* breaks so that I can fix it!
*/
/* TODO:
* check modem line signals
* implement handshaking or decide that we do not support it
*/
/* History:
* 0.3a - implemented pools of write URBs
* 0.3 - alpha version for public testing
* 0.2 - TIOCMGET works, so autopilot(1) can be used!
* 0.1 - can be used to to pilot-xfer -p /dev/ttyUSB0 -l
*
* The driver skeleton is mainly based on mct_u232.c and various other
* pieces of code shamelessly copied from the drivers/usb/serial/ directory.
*/
#include <linux/config.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/signal.h>
#include <linux/errno.h>
#include <linux/poll.h>
#include <linux/init.h>
#include <linux/slab.h>
/*#include <linux/fcntl.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/usb.h>
#ifdef CONFIG_USB_SERIAL_DEBUG
static int debug = 1;
#else
static int debug;
#endif
#include "usb-serial.h"
#include "kl5kusb105.h"
/*
* Version Information
*/
#define DRIVER_VERSION "v0.3a"
#define DRIVER_AUTHOR "Utz-Uwe Haus <haus@uuhaus.de>"
#define DRIVER_DESC "KLSI KL5KUSB105 chipset USB->Serial Converter driver"
/*
* Function prototypes
*/
static int klsi_105_startup (struct usb_serial *serial);
static void klsi_105_shutdown (struct usb_serial *serial);
static int klsi_105_open (struct usb_serial_port *port,
struct file *filp);
static void klsi_105_close (struct usb_serial_port *port,
struct file *filp);
static int klsi_105_write (struct usb_serial_port *port,
int from_user,
const unsigned char *buf,
int count);
static void klsi_105_write_bulk_callback (struct urb *urb);
static int klsi_105_chars_in_buffer (struct usb_serial_port *port);
static int klsi_105_write_room (struct usb_serial_port *port);
static void klsi_105_read_bulk_callback (struct urb *urb);
static void klsi_105_set_termios (struct usb_serial_port *port,
struct termios * old);
static int klsi_105_ioctl (struct usb_serial_port *port,
struct file * file,
unsigned int cmd,
unsigned long arg);
static void klsi_105_throttle (struct usb_serial_port *port);
static void klsi_105_unthrottle (struct usb_serial_port *port);
/*
static void klsi_105_break_ctl (struct usb_serial_port *port,
int break_state );
*/
/*
* All of the device info needed for the MCT USB-RS232 converter.
*/
static __devinitdata struct usb_device_id id_table_combined [] = {
{ USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) },
{ USB_DEVICE(KLSI_VID, KLSI_KL5KUSB105D_PID) },
{ } /* Terminating entry */
};
static __devinitdata struct usb_device_id palmconnect_table [] = {
{ USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) },
{ } /* Terminating entry */
};
static __devinitdata struct usb_device_id kl5kusb105d_table [] = {
{ USB_DEVICE(KLSI_VID, KLSI_KL5KUSB105D_PID) },
{ } /* Terminating entry */
};
MODULE_DEVICE_TABLE (usb, id_table_combined);
static struct usb_serial_device_type palmconnect_device = {
name: "PalmConnect USB Serial",
id_table: palmconnect_table,
needs_interrupt_in: MUST_HAVE, /* 1 interrupt-in endpoints */
needs_bulk_in: MUST_HAVE, /* 1 bulk-in endpoint */
needs_bulk_out: MUST_HAVE, /* 1 bulk-out endpoint */
num_interrupt_in: 1,
num_bulk_in: 1,
num_bulk_out: 1,
num_ports: 1,
open: klsi_105_open,
close: klsi_105_close,
write: klsi_105_write,
write_bulk_callback: klsi_105_write_bulk_callback,
chars_in_buffer: klsi_105_chars_in_buffer,
write_room: klsi_105_write_room,
read_bulk_callback: klsi_105_read_bulk_callback,
ioctl: klsi_105_ioctl,
set_termios: klsi_105_set_termios,
/*break_ctl: klsi_105_break_ctl,*/
startup: klsi_105_startup,
shutdown: klsi_105_shutdown,
throttle: klsi_105_throttle,
unthrottle: klsi_105_unthrottle,
};
static struct usb_serial_device_type kl5kusb105d_device = {
name: "generic KL5KUSB105D USB->Serial",
id_table: kl5kusb105d_table,
needs_interrupt_in: MUST_HAVE, /* 1 interrupt-in endpoints */
needs_bulk_in: MUST_HAVE, /* 1 bulk-in endpoint */
needs_bulk_out: MUST_HAVE, /* 1 bulk-out endpoint */
num_interrupt_in: 1,
num_bulk_in: 1,
num_bulk_out: 1,
num_ports: 1,
open: klsi_105_open,
close: klsi_105_close,
write: klsi_105_write,
write_bulk_callback: klsi_105_write_bulk_callback,
chars_in_buffer: klsi_105_chars_in_buffer,
write_room: klsi_105_write_room,
read_bulk_callback: klsi_105_read_bulk_callback,
ioctl: klsi_105_ioctl,
set_termios: klsi_105_set_termios,
/*break_ctl: klsi_105_break_ctl,*/
startup: klsi_105_startup,
shutdown: klsi_105_shutdown,
throttle: klsi_105_throttle,
unthrottle: klsi_105_unthrottle,
};
struct klsi_105_port_settings {
__u8 pktlen; /* always 5, it seems */
__u8 baudrate;
__u8 databits;
__u8 unknown1;
__u8 unknown2;
} __attribute__ ((packed));
/* we implement a pool of NUM_URBS urbs per usb_serial */
#define NUM_URBS 1
#define URB_TRANSFER_BUFFER_SIZE 64
struct klsi_105_private {
struct klsi_105_port_settings cfg;
struct termios termios;
unsigned long line_state; /* modem line settings */
/* write pool */
struct urb * write_urb_pool[NUM_URBS];
spinlock_t write_urb_pool_lock;
unsigned long bytes_in;
unsigned long bytes_out;
};
/*
* Handle vendor specific USB requests
*/
#define KLSI_TIMEOUT (HZ * 5 ) /* default urb timeout */
static int klsi_105_chg_port_settings(struct usb_serial *serial,
struct klsi_105_port_settings *settings)
{
int rc;
rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
KL5KUSB105A_SIO_SET_DATA,
USB_TYPE_VENDOR | USB_DIR_OUT | USB_RECIP_INTERFACE,
0, /* value */
0, /* index */
settings,
sizeof(struct klsi_105_port_settings),
KLSI_TIMEOUT);
if (rc < 0)
err("Change port settings failed (error = %d)", rc);
info(__FUNCTION__ " - %d byte block, baudrate %x, databits %d, u1 %d, u2 %d",
settings->pktlen,
settings->baudrate, settings->databits,
settings->unknown1, settings->unknown2);
return rc;
} /* klsi_105_chg_port_settings */
/* translate a 16-bit status value from the device to linux's TIO bits */
static unsigned long klsi_105_status2linestate(const __u16 status)
{
unsigned long res = 0;
res = ((status & KL5KUSB105A_DSR) ? TIOCM_DSR : 0)
| ((status & KL5KUSB105A_CTS) ? TIOCM_CTS : 0)
;
return res;
}
/*
* Read line control via vendor command and return result through
* *line_state_p
*/
/* It seems that the status buffer has always only 2 bytes length */
#define KLSI_STATUSBUF_LEN 2
static int klsi_105_get_line_state(struct usb_serial *serial,
unsigned long *line_state_p)
{
int rc;
__u8 status_buf[KLSI_STATUSBUF_LEN] = { -1,-1};
__u16 status;
info(__FUNCTION__ " - sending SIO Poll request");
rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
KL5KUSB105A_SIO_POLL,
USB_TYPE_VENDOR | USB_DIR_IN,
0, /* value */
0, /* index */
status_buf, KLSI_STATUSBUF_LEN,
10*HZ
);
if (rc < 0)
err("Reading line status failed (error = %d)", rc);
else {
status = status_buf[0] + (status_buf[1]<<8);
info(__FUNCTION__ " - read status %x %x",
status_buf[0], status_buf[1]);
*line_state_p = klsi_105_status2linestate(status);
}
return rc;
}
/*
* Driver's tty interface functions
*/
static int klsi_105_startup (struct usb_serial *serial)
{
struct klsi_105_private *priv;
int i;
/* check if we support the product id (see keyspan.c)
* FIXME
*/
/* allocate the private data structure */
for (i=0; i<serial->num_ports; i++) {
serial->port[i].private = kmalloc(sizeof(struct klsi_105_private),
GFP_KERNEL);
if (!serial->port[i].private) {
dbg(__FUNCTION__ "kmalloc for klsi_105_private failed.");
return (-1); /* error */
}
priv = (struct klsi_105_private *)serial->port[i].private;
/* set initial values for control structures */
priv->cfg.pktlen = 5;
priv->cfg.baudrate = kl5kusb105a_sio_b9600;
priv->cfg.databits = kl5kusb105a_dtb_8;
priv->cfg.unknown1 = 0;
priv->cfg.unknown2 = 1;
priv->line_state = 0;
priv->bytes_in = 0;
priv->bytes_out = 0;
spin_lock_init (&priv->write_urb_pool_lock);
for (i=0; i<NUM_URBS; i++) {
struct urb* urb = usb_alloc_urb(0);
priv->write_urb_pool[i] = urb;
if (urb == NULL) {
err("No more urbs???");
continue;
}
urb->transfer_buffer = NULL;
urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE,
GFP_KERNEL);
if (!urb->transfer_buffer) {
err (__FUNCTION__
" - out of memory for urb buffers.");
continue;
}
}
/* priv->termios is left uninitalized until port opening */
init_waitqueue_head(&serial->port[i].write_wait);
}
return (0);
} /* klsi_105_startup */
static void klsi_105_shutdown (struct usb_serial *serial)
{
int i;
dbg (__FUNCTION__);
/* stop reads and writes on all ports */
for (i=0; i < serial->num_ports; ++i) {
struct klsi_105_private *priv =
(struct klsi_105_private*) serial->port[i].private;
unsigned long flags;
while (serial->port[i].open_count > 0) {
klsi_105_close (&serial->port[i], NULL);
}
if (priv) {
/* kill our write urb pool */
int j;
struct urb **write_urbs = priv->write_urb_pool;
spin_lock_irqsave(&priv->write_urb_pool_lock,flags);
for (j = 0; j < NUM_URBS; j++) {
if (write_urbs[j]) {
/* FIXME - uncomment the following
* usb_unlink_urb call when the host
* controllers get fixed to set
* urb->dev = NULL after the urb is
* finished. Otherwise this call
* oopses. */
/* usb_unlink_urb(write_urbs[j]); */
if (write_urbs[j]->transfer_buffer)
kfree(write_urbs[j]->transfer_buffer);
usb_free_urb (write_urbs[j]);
}
}
spin_unlock_irqrestore (&priv->write_urb_pool_lock,
flags);
kfree(serial->port[i].private);
}
}
} /* klsi_105_shutdown */
static int klsi_105_open (struct usb_serial_port *port, struct file *filp)
{
struct usb_serial *serial = port->serial;
struct klsi_105_private *priv = (struct klsi_105_private *)port->private;
int retval = 0;
dbg(__FUNCTION__" port %d", port->number);
down (&port->sem);
++port->open_count;
MOD_INC_USE_COUNT;
if (!port->active) {
int rc;
int i;
unsigned long line_state;
port->active = 1;
/* force low_latency on so that our tty_push actually forces
* the data through
* port->tty->low_latency = 1; */
/* Do a defined restart:
* Set up sane default baud rate and send the 'READ_ON'
* vendor command.
* FIXME: set modem line control (how?)
* Then read the modem line control and store values in
* priv->line_state.
*/
priv->cfg.pktlen = 5;
priv->cfg.baudrate = kl5kusb105a_sio_b9600;
priv->cfg.databits = kl5kusb105a_dtb_8;
priv->cfg.unknown1 = 0;
priv->cfg.unknown2 = 1;
klsi_105_chg_port_settings(serial, &(priv->cfg));
/* set up termios structure */
priv->termios.c_iflag = port->tty->termios->c_iflag;
priv->termios.c_oflag = port->tty->termios->c_oflag;
priv->termios.c_cflag = port->tty->termios->c_cflag;
priv->termios.c_lflag = port->tty->termios->c_lflag;
for (i=0; i<NCCS; i++)
priv->termios.c_cc[i] = port->tty->termios->c_cc[i];
/* READ_ON and urb submission */
FILL_BULK_URB(port->read_urb, serial->dev,
usb_rcvbulkpipe(serial->dev,
port->bulk_in_endpointAddress),
port->read_urb->transfer_buffer,
port->read_urb->transfer_buffer_length,
klsi_105_read_bulk_callback,
port);
port->read_urb->transfer_flags |= USB_QUEUE_BULK;
rc = usb_submit_urb(port->read_urb);
if (rc) {
err(__FUNCTION__
" - failed submitting read urb, error %d", rc);
retval = rc;
goto exit;
}
rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev,0),
KL5KUSB105A_SIO_CONFIGURE,
USB_TYPE_VENDOR|USB_DIR_OUT|USB_RECIP_INTERFACE,
KL5KUSB105A_SIO_CONFIGURE_READ_ON,
0, /* index */
NULL,
0,
KLSI_TIMEOUT);
if (rc < 0) {
err("Enabling read failed (error = %d)", rc);
retval = rc;
} else
dbg(__FUNCTION__ " - enabled reading");
rc = klsi_105_get_line_state(serial, &line_state);
if (rc >= 0) {
priv->line_state = line_state;
dbg(__FUNCTION__
" - read line state 0x%lx", line_state);
retval = 0;
} else
retval = rc;
}
exit:
up (&port->sem);
return retval;
} /* klsi_105_open */
static void klsi_105_close (struct usb_serial_port *port, struct file *filp)
{
struct usb_serial *serial;
struct klsi_105_private *priv
= (struct klsi_105_private *)port->private;
dbg(__FUNCTION__" port %d", port->number);
serial = get_usb_serial (port, __FUNCTION__);
if(!serial)
return;
down (&port->sem);
--port->open_count;
if (port->open_count <= 0) {
/* send READ_OFF */
int rc = usb_control_msg(serial->dev,
usb_sndctrlpipe(serial->dev, 0),
KL5KUSB105A_SIO_CONFIGURE,
USB_TYPE_VENDOR | USB_DIR_OUT,
KL5KUSB105A_SIO_CONFIGURE_READ_OFF,
0, /* index */
NULL, 0,
KLSI_TIMEOUT);
if (rc < 0)
err("Disabling read failed (error = %d)", rc);
/* shutdown our bulk reads and writes */
usb_unlink_urb (port->write_urb);
usb_unlink_urb (port->read_urb);
/* unlink our write pool */
/* FIXME */
/* wgg - do I need this? I think so. */
usb_unlink_urb (port->interrupt_in_urb);
port->active = 0;
info("kl5kusb105 port stats: %ld bytes in, %ld bytes out", priv->bytes_in, priv->bytes_out);
}
up (&port->sem);
MOD_DEC_USE_COUNT;
} /* klsi_105_close */
/* We need to write a complete 64-byte data block and encode the
* number actually sent in the first double-byte, LSB-order. That
* leaves at most 62 bytes of payload.
*/
#define KLSI_105_DATA_OFFSET 2 /* in the bulk urb data block */
static int klsi_105_write (struct usb_serial_port *port, int from_user,
const unsigned char *buf, int count)
{
struct usb_serial *serial = port->serial;
struct klsi_105_private *priv =
(struct klsi_105_private*) port->private;
int result, size;
int bytes_sent=0;
dbg(__FUNCTION__ " - port %d", port->number);
down (&port->sem); /* to lock against someone else trying to
take an URB we just selected from the pool */
while (count > 0) {
/* try to find a free urb (write 0 bytes if none) */
struct urb *urb = NULL;
unsigned long flags;
int i;
/* since the pool is per-port we might not need the spin lock !? */
spin_lock_irqsave (&priv->write_urb_pool_lock, flags);
for (i=0; i<NUM_URBS; i++) {
if (priv->write_urb_pool[i]->status != -EINPROGRESS) {
urb = priv->write_urb_pool[i];
dbg(__FUNCTION__ " - using pool URB %d", i);
break;
}
}
spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags);
if (urb==NULL) {
dbg (__FUNCTION__ " - no more free urbs");
goto exit;
}
if (urb->transfer_buffer == NULL) {
urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
if (urb->transfer_buffer == NULL) {
err(__FUNCTION__ " - no more kernel memory...");
goto exit;
}
}
size = min (count, port->bulk_out_size - KLSI_105_DATA_OFFSET);
size = min (size, URB_TRANSFER_BUFFER_SIZE - KLSI_105_DATA_OFFSET);
if (from_user) {
if (copy_from_user(urb->transfer_buffer
+ KLSI_105_DATA_OFFSET, buf, size)) {
up (&port->sem);
return -EFAULT;
}
} else {
memcpy (urb->transfer_buffer + KLSI_105_DATA_OFFSET,
buf, size);
}
/* write payload size into transfer buffer */
((__u8 *)urb->transfer_buffer)[0] = (__u8) (size & 0xFF);
((__u8 *)urb->transfer_buffer)[1] = (__u8) ((size & 0xFF00)>>8);
/* set up our urb */
FILL_BULK_URB(urb, serial->dev,
usb_sndbulkpipe(serial->dev,
port->bulk_out_endpointAddress),
urb->transfer_buffer,
URB_TRANSFER_BUFFER_SIZE,
klsi_105_write_bulk_callback,
port);
urb->transfer_flags |= USB_QUEUE_BULK;
/* send the data out the bulk port */
result = usb_submit_urb(urb);
if (result) {
err(__FUNCTION__
" - failed submitting write urb, error %d", result);
goto exit;
}
buf += size;
bytes_sent += size;
count -= size;
}
exit:
up (&port->sem);
priv->bytes_out+=bytes_sent;
return bytes_sent; /* that's how much we wrote */
} /* klsi_105_write */
static void klsi_105_write_bulk_callback ( struct urb *urb)
{
struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
struct usb_serial *serial = port->serial;
dbg(__FUNCTION__ " - port %d", port->number);
if (!serial) {
dbg(__FUNCTION__ " - bad serial pointer, exiting");
return;
}
if (urb->status) {
dbg(__FUNCTION__ " - nonzero write bulk status received: %d",
urb->status);
return;
}
/* from generic_write_bulk_callback */
queue_task(&port->tqueue, &tq_immediate);
mark_bh(IMMEDIATE_BH);
return;
} /* klsi_105_write_bulk_completion_callback */
/* return number of characters currently in the writing process */
static int klsi_105_chars_in_buffer (struct usb_serial_port *port)
{
int chars = 0;
int i;
unsigned long flags;
struct klsi_105_private *priv =
(struct klsi_105_private*) port->private;
spin_lock_irqsave (&priv->write_urb_pool_lock, flags);
for (i = 0; i < NUM_URBS; ++i) {
if (priv->write_urb_pool[i]->status == -EINPROGRESS) {
chars += URB_TRANSFER_BUFFER_SIZE;
}
}
spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags);
dbg (__FUNCTION__ " - returns %d", chars);
return (chars);
}
static int klsi_105_write_room (struct usb_serial_port *port)
{
unsigned long flags;
int i;
int room = 0;
struct klsi_105_private *priv =
(struct klsi_105_private*) port->private;
spin_lock_irqsave (&priv->write_urb_pool_lock, flags);
for (i = 0; i < NUM_URBS; ++i) {
if (priv->write_urb_pool[i]->status != -EINPROGRESS) {
room += URB_TRANSFER_BUFFER_SIZE;
}
}
spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags);
dbg(__FUNCTION__ " - returns %d", room);
return (room);
}
static void klsi_105_read_bulk_callback (struct urb *urb)
{
struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
struct usb_serial *serial = port->serial;
struct klsi_105_private *priv =
(struct klsi_105_private*) port->private;
struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int rc;
dbg(__FUNCTION__ " - port %d", port->number);
/* The urb might have been killed. */
if (urb->status) {
dbg(__FUNCTION__ " - nonzero read bulk status received: %d",
urb->status);
return;
}
if (!serial) {
dbg(__FUNCTION__ " - bad serial pointer, exiting");
return;
}
/* The data received is again preceded by a length double-byte in LSB-
* first order (see klsi_105_write() )
*/
if (urb->actual_length == 0) {
/* empty urbs seem to happen, we ignore them */
/* dbg(__FUNCTION__ " - emtpy URB"); */
;
} else if (urb->actual_length <= 2) {
dbg(__FUNCTION__ " - size %d URB not understood",
urb->actual_length);
usb_serial_debug_data (__FILE__, __FUNCTION__, urb->actual_length, data);
} else {
int i;
int bytes_sent = ((__u8 *) data)[0] +
((unsigned int) ((__u8 *) data)[1] << 8);
tty = port->tty;
/* we should immediately resubmit the URB, before attempting
* to pass the data on to the tty layer. But that needs locking
* against re-entry an then mixed-up data because of
* intermixed tty_flip_buffer_push()s
* FIXME
*/
usb_serial_debug_data (__FILE__, __FUNCTION__,
urb->actual_length, data);
if (bytes_sent + 2 > urb->actual_length) {
dbg(__FUNCTION__
" - trying to read more data than available"
" (%d vs. %d)",
bytes_sent+2, urb->actual_length);
/* cap at implied limit */
bytes_sent = urb->actual_length - 2;
}
for (i = 2; i < 2+bytes_sent; i++) {
/* if we insert more than TTY_FLIPBUF_SIZE characters,
* we drop them. */
if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
tty_flip_buffer_push(tty);
}
/* this doesn't actually push the data through unless
* tty->low_latency is set */
tty_insert_flip_char(tty, ((__u8*) data)[i], 0);
}
tty_flip_buffer_push(tty);
priv->bytes_in += bytes_sent;
}
/* Continue trying to always read */
FILL_BULK_URB(port->read_urb, serial->dev,
usb_rcvbulkpipe(serial->dev,
port->bulk_in_endpointAddress),
port->read_urb->transfer_buffer,
port->read_urb->transfer_buffer_length,
klsi_105_read_bulk_callback,
port);
rc = usb_submit_urb(port->read_urb);
if (rc)
err(__FUNCTION__
" - failed resubmitting read urb, error %d", rc);
} /* klsi_105_read_bulk_callback */
static void klsi_105_set_termios (struct usb_serial_port *port,
struct termios *old_termios)
{
struct usb_serial *serial = port->serial;
struct klsi_105_private *priv = (struct klsi_105_private *)port->private;
unsigned int iflag = port->tty->termios->c_iflag;
unsigned int old_iflag = old_termios->c_iflag;
unsigned int cflag = port->tty->termios->c_cflag;
unsigned int old_cflag = old_termios->c_cflag;
/*
* Update baud rate
*/
if( (cflag & CBAUD) != (old_cflag & CBAUD) ) {
/* reassert DTR and (maybe) RTS on transition from B0 */
if( (old_cflag & CBAUD) == B0 ) {
dbg(__FUNCTION__ ": baud was B0");
#if 0
priv->control_state |= TIOCM_DTR;
/* don't set RTS if using hardware flow control */
if (!(old_cflag & CRTSCTS)) {
priv->control_state |= TIOCM_RTS;
}
mct_u232_set_modem_ctrl(serial, priv->control_state);
#endif
}
switch(cflag & CBAUD) {
case B0: /* handled below */
break;
case B1200: priv->cfg.baudrate = kl5kusb105a_sio_b1200;
break;
case B2400: priv->cfg.baudrate = kl5kusb105a_sio_b2400;
break;
case B4800: priv->cfg.baudrate = kl5kusb105a_sio_b4800;
break;
case B9600: priv->cfg.baudrate = kl5kusb105a_sio_b9600;
break;
case B19200: priv->cfg.baudrate = kl5kusb105a_sio_b19200;
break;
case B38400: priv->cfg.baudrate = kl5kusb105a_sio_b38400;
break;
case B57600: priv->cfg.baudrate = kl5kusb105a_sio_b57600;
break;
case B115200: priv->cfg.baudrate = kl5kusb105a_sio_b115200;
break;
default:
err("KLSI USB->Serial converter:"
" unsupported baudrate request, using default"
" of 9600");
priv->cfg.baudrate = kl5kusb105a_sio_b9600;
break;
}
if ((cflag & CBAUD) == B0 ) {
dbg(__FUNCTION__ ": baud is B0");
/* Drop RTS and DTR */
/* maybe this should be simulated by sending read
* disable and read enable messages?
*/
;
#if 0
priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
mct_u232_set_modem_ctrl(serial, priv->control_state);
#endif
}
}
if ((cflag & CSIZE) != (old_cflag & CSIZE)) {
/* set the number of data bits */
switch (cflag & CSIZE) {
case CS5:
dbg(__FUNCTION__ " - 5 bits/byte not supported");
return ;
case CS6:
dbg(__FUNCTION__ " - 6 bits/byte not supported");
return ;
case CS7:
priv->cfg.databits = kl5kusb105a_dtb_7;
break;
case CS8:
priv->cfg.databits = kl5kusb105a_dtb_8;
break;
default:
err("CSIZE was not CS5-CS8, using default of 8");
priv->cfg.databits = kl5kusb105a_dtb_8;
break;
}
}
/*
* Update line control register (LCR)
*/
if ((cflag & (PARENB|PARODD)) != (old_cflag & (PARENB|PARODD))
|| (cflag & CSTOPB) != (old_cflag & CSTOPB) ) {
#if 0
priv->last_lcr = 0;
/* set the parity */
if (cflag & PARENB)
priv->last_lcr |= (cflag & PARODD) ?
MCT_U232_PARITY_ODD : MCT_U232_PARITY_EVEN;
else
priv->last_lcr |= MCT_U232_PARITY_NONE;
/* set the number of stop bits */
priv->last_lcr |= (cflag & CSTOPB) ?
MCT_U232_STOP_BITS_2 : MCT_U232_STOP_BITS_1;
mct_u232_set_line_ctrl(serial, priv->last_lcr);
#endif
;
}
/*
* Set flow control: well, I do not really now how to handle DTR/RTS.
* Just do what we have seen with SniffUSB on Win98.
*/
if( (iflag & IXOFF) != (old_iflag & IXOFF)
|| (iflag & IXON) != (old_iflag & IXON)
|| (cflag & CRTSCTS) != (old_cflag & CRTSCTS) ) {
/* Drop DTR/RTS if no flow control otherwise assert */
#if 0
if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS) )
priv->control_state |= TIOCM_DTR | TIOCM_RTS;
else
priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
mct_u232_set_modem_ctrl(serial, priv->control_state);
#endif
;
}
/* now commit changes to device */
klsi_105_chg_port_settings(serial, &(priv->cfg));
} /* klsi_105_set_termios */
#if 0
static void mct_u232_break_ctl( struct usb_serial_port *port, int break_state )
{
struct usb_serial *serial = port->serial;
struct mct_u232_private *priv = (struct mct_u232_private *)port->private;
unsigned char lcr = priv->last_lcr;
dbg (__FUNCTION__ "state=%d", break_state);
if (break_state)
lcr |= MCT_U232_SET_BREAK;
mct_u232_set_line_ctrl(serial, lcr);
} /* mct_u232_break_ctl */
#endif
static int klsi_105_ioctl (struct usb_serial_port *port, struct file * file,
unsigned int cmd, unsigned long arg)
{
struct usb_serial *serial = port->serial;
struct klsi_105_private *priv = (struct klsi_105_private *)port->private;
int mask;
dbg (__FUNCTION__ "cmd=0x%x", cmd);
/* Based on code from acm.c and others */
switch (cmd) {
case TIOCMGET: {
int rc;
unsigned long line_state;
dbg (__FUNCTION__ " - TIOCMGET request, just guessing");
rc = klsi_105_get_line_state(serial, &line_state);
if (rc < 0) {
err("Reading line control failed (error = %d)", rc);
/* better return value? EAGAIN? */
return -ENOIOCTLCMD;
} else {
priv->line_state = line_state;
dbg(__FUNCTION__ " - read line state 0x%lx", line_state);
}
return put_user(priv->line_state, (unsigned long *) arg);
};
case TIOCMSET: /* Turns on and off the lines as specified by the mask */
case TIOCMBIS: /* turns on (Sets) the lines as specified by the mask */
case TIOCMBIC: /* turns off (Clears) the lines as specified by the mask */
if (get_user(mask, (unsigned long *) arg))
return -EFAULT;
if ((cmd == TIOCMSET) || (mask & TIOCM_RTS)) {
/* RTS needs set */
if( ((cmd == TIOCMSET) && (mask & TIOCM_RTS)) ||
(cmd == TIOCMBIS) )
dbg (__FUNCTION__ " - set RTS not handled");
/* priv->control_state |= TIOCM_RTS; */
else
dbg (__FUNCTION__ " - clear RTS not handled");
/* priv->control_state &= ~TIOCM_RTS; */
}
if ((cmd == TIOCMSET) || (mask & TIOCM_DTR)) {
/* DTR needs set */
if( ((cmd == TIOCMSET) && (mask & TIOCM_DTR)) ||
(cmd == TIOCMBIS) )
dbg (__FUNCTION__ " - set DTR not handled");
/* priv->control_state |= TIOCM_DTR; */
else
dbg (__FUNCTION__ " - clear DTR not handled");
/* priv->control_state &= ~TIOCM_DTR; */
}
/*
mct_u232_set_modem_ctrl(serial, priv->control_state);
*/
break;
case TIOCMIWAIT:
/* wait for any of the 4 modem inputs (DCD,RI,DSR,CTS)*/
/* TODO */
dbg (__FUNCTION__ " - TIOCMIWAIT not handled");
return -ENOIOCTLCMD;
case TIOCGICOUNT:
/* return count of modemline transitions */
/* TODO */
dbg (__FUNCTION__ " - TIOCGICOUNT not handled");
return -ENOIOCTLCMD;
case TCGETS: {
/* return current info to caller */
int retval;
dbg (__FUNCTION__ " - TCGETS data faked/incomplete");
retval = verify_area(VERIFY_WRITE, (void *)arg,
sizeof(struct termios));
if (retval)
return(retval);
kernel_termios_to_user_termios((struct termios *)arg,
&priv->termios);
return(0);
}
case TCSETS: {
/* set port termios to the one given by the user */
int retval;
dbg (__FUNCTION__ " - TCSETS not handled");
retval = verify_area(VERIFY_READ, (void *)arg,
sizeof(struct termios));
if (retval)
return(retval);
user_termios_to_kernel_termios(&priv->termios,
(struct termios *)arg);
klsi_105_set_termios(port, &priv->termios);
return(0);
}
case TCSETSW: {
/* set port termios and try to wait for completion of last
* write operation */
/* We guess here. If there are not too many write urbs
* outstanding, we lie. */
/* what is the right way to wait here? schedule() ? */
/*
while (klsi_105_chars_in_buffer(port) > (NUM_URBS / 4 ) * URB_TRANSFER_BUFFER_SIZE)
schedule();
*/
return -ENOIOCTLCMD;
}
default:
dbg(__FUNCTION__ ": arg not supported - 0x%04x",cmd);
return(-ENOIOCTLCMD);
break;
}
return 0;
} /* klsi_105_ioctl */
static void klsi_105_throttle (struct usb_serial_port *port)
{
dbg(__FUNCTION__ " - port %d", port->number);
down (&port->sem);
usb_unlink_urb (port->read_urb);
up (&port->sem);
return;
}
static void klsi_105_unthrottle (struct usb_serial_port *port)
{
int result;
dbg(__FUNCTION__ " - port %d", port->number);
down (&port->sem);
port->read_urb->dev = port->serial->dev;
result = usb_submit_urb(port->read_urb);
if (result)
err(__FUNCTION__ " - failed submitting read urb, error %d",
result);
up (&port->sem);
return;
}
static int __init klsi_105_init (void)
{
usb_serial_register (&palmconnect_device);
usb_serial_register (&kl5kusb105d_device);
info(DRIVER_DESC " " DRIVER_VERSION);
return 0;
}
static void __exit klsi_105_exit (void)
{
usb_serial_deregister (&palmconnect_device);
usb_serial_deregister (&kl5kusb105d_device);
}
module_init (klsi_105_init);
module_exit (klsi_105_exit);
MODULE_AUTHOR( DRIVER_AUTHOR );
MODULE_DESCRIPTION( DRIVER_DESC );
MODULE_LICENSE("GPL");
MODULE_PARM(debug, "i");
MODULE_PARM_DESC(debug, "enable extensive debugging messages");
/* FIXME: implement
MODULE_PARM(num_urbs, "i");
MODULE_PARM_DESC(num_urbs, "number of URBs to use in write pool");
*/
/* vim: set sts=8 ts=8 sw=8: */
|