kl5kusb105.c
上传用户:jlfgdled
上传日期:2013-04-10
资源大小:33168k
文件大小:29k
- /*
- * 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/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 <asm/uaccess.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 KLSI converters.
- */
- static struct usb_device_id id_table [] = {
- { USB_DEVICE(PALMCONNECT_VID, PALMCONNECT_PID) },
- { USB_DEVICE(KLSI_VID, KLSI_KL5KUSB105D_PID) },
- { } /* Terminating entry */
- };
- MODULE_DEVICE_TABLE (usb, id_table);
- static struct usb_serial_device_type kl5kusb105d_device = {
- .owner = THIS_MODULE,
- .name = "KL5KUSB105D / PalmConnect",
- .id_table = id_table,
- .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("%s - %d byte block, baudrate %x, databits %d, u1 %d, u2 %d",
- __FUNCTION__,
- 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("%s - sending SIO Poll request", __FUNCTION__);
- 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("%s - read status %x %x", __FUNCTION__,
- 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("%skmalloc for klsi_105_private failed.", __FUNCTION__);
- 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("%s - out of memory for urb buffers.", __FUNCTION__);
- 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("%s", __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;
- 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;
- int rc;
- int i;
- unsigned long line_state;
- dbg("%s port %d", __FUNCTION__, port->number);
- /* 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("%s - failed submitting read urb, error %d", __FUNCTION__, 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("%s - enabled reading", __FUNCTION__);
- rc = klsi_105_get_line_state(serial, &line_state);
- if (rc >= 0) {
- priv->line_state = line_state;
- dbg("%s - read line state 0x%lx", __FUNCTION__, line_state);
- retval = 0;
- } else
- retval = rc;
- exit:
- 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;
- int rc;
- dbg("%s port %d", __FUNCTION__, port->number);
- serial = get_usb_serial (port, __FUNCTION__);
- if(!serial)
- return;
- /* send READ_OFF */
- 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);
- info("kl5kusb105 port stats: %ld bytes in, %ld bytes out", priv->bytes_in, priv->bytes_out);
- } /* 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("%s - port %d", __FUNCTION__, port->number);
- 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("%s - using pool URB %d", __FUNCTION__, i);
- break;
- }
- }
- spin_unlock_irqrestore (&priv->write_urb_pool_lock, flags);
- if (urb==NULL) {
- dbg("%s - no more free urbs", __FUNCTION__);
- goto exit;
- }
- if (urb->transfer_buffer == NULL) {
- urb->transfer_buffer = kmalloc (URB_TRANSFER_BUFFER_SIZE, GFP_KERNEL);
- if (urb->transfer_buffer == NULL) {
- err("%s - no more kernel memory...", __FUNCTION__);
- 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)) {
- 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("%s - failed submitting write urb, error %d", __FUNCTION__, result);
- goto exit;
- }
- buf += size;
- bytes_sent += size;
- count -= size;
- }
- exit:
- 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("%s - port %d", __FUNCTION__, port->number);
-
- if (!serial) {
- dbg("%s - bad serial pointer, exiting", __FUNCTION__);
- return;
- }
- if (urb->status) {
- dbg("%s - nonzero write bulk status received: %d", __FUNCTION__,
- 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("%s - returns %d", __FUNCTION__, 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("%s - returns %d", __FUNCTION__, 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("%s - port %d", __FUNCTION__, port->number);
- /* The urb might have been killed. */
- if (urb->status) {
- dbg("%s - nonzero read bulk status received: %d", __FUNCTION__,
- urb->status);
- return;
- }
- if (!serial) {
- dbg("%s - bad serial pointer, exiting", __FUNCTION__);
- 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("%s - emtpy URB", __FUNCTION__); */
- ;
- } else if (urb->actual_length <= 2) {
- dbg("%s - size %d URB not understood", __FUNCTION__,
- 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("%s - trying to read more data than available"
- " (%d vs. %d)", __FUNCTION__,
- 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("%s - failed resubmitting read urb, error %d", __FUNCTION__, 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("%s: baud was B0", __FUNCTION__);
- #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("%s: baud is B0", __FUNCTION__);
- /* 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("%s - 5 bits/byte not supported", __FUNCTION__);
- return ;
- case CS6:
- dbg("%s - 6 bits/byte not supported", __FUNCTION__);
- 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("%sstate=%d", __FUNCTION__, 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("%scmd=0x%x", __FUNCTION__, cmd);
- /* Based on code from acm.c and others */
- switch (cmd) {
- case TIOCMGET: {
- int rc;
- unsigned long line_state;
- dbg("%s - TIOCMGET request, just guessing", __FUNCTION__);
- 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("%s - read line state 0x%lx", __FUNCTION__, 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("%s - set RTS not handled", __FUNCTION__);
- /* priv->control_state |= TIOCM_RTS; */
- else
- dbg("%s - clear RTS not handled", __FUNCTION__);
- /* priv->control_state &= ~TIOCM_RTS; */
- }
- if ((cmd == TIOCMSET) || (mask & TIOCM_DTR)) {
- /* DTR needs set */
- if( ((cmd == TIOCMSET) && (mask & TIOCM_DTR)) ||
- (cmd == TIOCMBIS) )
- dbg("%s - set DTR not handled", __FUNCTION__);
- /* priv->control_state |= TIOCM_DTR; */
- else
- dbg("%s - clear DTR not handled", __FUNCTION__);
- /* 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("%s - TIOCMIWAIT not handled", __FUNCTION__);
- return -ENOIOCTLCMD;
- case TIOCGICOUNT:
- /* return count of modemline transitions */
- /* TODO */
- dbg("%s - TIOCGICOUNT not handled", __FUNCTION__);
- return -ENOIOCTLCMD;
- case TCGETS: {
- /* return current info to caller */
- int retval;
- dbg("%s - TCGETS data faked/incomplete", __FUNCTION__);
- 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("%s - TCSETS not handled", __FUNCTION__);
- 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("%s: arg not supported - 0x%04x", __FUNCTION__,cmd);
- return(-ENOIOCTLCMD);
- break;
- }
- return 0;
- } /* klsi_105_ioctl */
- static void klsi_105_throttle (struct usb_serial_port *port)
- {
- dbg("%s - port %d", __FUNCTION__, port->number);
- usb_unlink_urb (port->read_urb);
- }
- static void klsi_105_unthrottle (struct usb_serial_port *port)
- {
- int result;
- dbg("%s - port %d", __FUNCTION__, port->number);
- port->read_urb->dev = port->serial->dev;
- result = usb_submit_urb(port->read_urb);
- if (result)
- err("%s - failed submitting read urb, error %d", __FUNCTION__,
- result);
- }
- static int __init klsi_105_init (void)
- {
- usb_serial_register (&kl5kusb105d_device);
- info(DRIVER_DESC " " DRIVER_VERSION);
- return 0;
- }
- static void __exit klsi_105_exit (void)
- {
- 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: */