diff options
Diffstat (limited to 'drivers/usb/serial/kl5kusb105.c')
| -rw-r--r-- | drivers/usb/serial/kl5kusb105.c | 1034 |
1 files changed, 1034 insertions, 0 deletions
diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c new file mode 100644 index 00000000000..49c602a0b4d --- /dev/null +++ b/drivers/usb/serial/kl5kusb105.c @@ -0,0 +1,1034 @@ +/* + * 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> +#include "usb-serial.h" +#include "kl5kusb105.h" + +static int debug; + +/* + * 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, + const unsigned char *buf, + int count); +static void klsi_105_write_bulk_callback (struct urb *urb, struct pt_regs *regs); +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, struct pt_regs *regs); +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 ); + */ +static int klsi_105_tiocmget (struct usb_serial_port *port, + struct file *file); +static int klsi_105_tiocmset (struct usb_serial_port *port, + struct file *file, unsigned int set, + unsigned int clear); + +/* + * 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_driver kl5kusb105d_driver = { + .owner = THIS_MODULE, + .name = "kl5kusb105d", + .probe = usb_serial_probe, + .disconnect = usb_serial_disconnect, + .id_table = id_table, +}; + +static struct usb_serial_device_type kl5kusb105d_device = { + .owner = THIS_MODULE, + .name = "KL5KUSB105D / PalmConnect", + .short_name = "kl5kusb105d", + .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,*/ + .tiocmget = klsi_105_tiocmget, + .tiocmset = klsi_105_tiocmset, + .attach = 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 lock; + unsigned long bytes_in; + unsigned long bytes_out; +}; + + +/* + * Handle vendor specific USB requests + */ + + +#define KLSI_TIMEOUT 5000 /* default urb timeout */ + +static int klsi_105_chg_port_settings(struct usb_serial_port *port, + struct klsi_105_port_settings *settings) +{ + int rc; + + rc = usb_control_msg(port->serial->dev, + usb_sndctrlpipe(port->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_port *port, + 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(port->serial->dev, + usb_rcvctrlpipe(port->serial->dev, 0), + KL5KUSB105A_SIO_POLL, + USB_TYPE_VENDOR | USB_DIR_IN, + 0, /* value */ + 0, /* index */ + status_buf, KLSI_STATUSBUF_LEN, + 10000 + ); + 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++) { + int j; + priv = kmalloc(sizeof(struct klsi_105_private), + GFP_KERNEL); + if (!priv) { + dbg("%skmalloc for klsi_105_private failed.", __FUNCTION__); + return -ENOMEM; + } + /* 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; + usb_set_serial_port_data(serial->port[i], priv); + + spin_lock_init (&priv->lock); + for (j=0; j<NUM_URBS; j++) { + struct urb* urb = usb_alloc_urb(0, GFP_KERNEL); + + priv->write_urb_pool[j] = 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 = usb_get_serial_port_data(serial->port[i]); + unsigned long flags; + + if (priv) { + /* kill our write urb pool */ + int j; + struct urb **write_urbs = priv->write_urb_pool; + spin_lock_irqsave(&priv->lock,flags); + + for (j = 0; j < NUM_URBS; j++) { + if (write_urbs[j]) { + /* FIXME - uncomment the following + * usb_kill_urb call when the host + * controllers get fixed to set + * urb->dev = NULL after the urb is + * finished. Otherwise this call + * oopses. */ + /* usb_kill_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->lock, flags); + + kfree(priv); + usb_set_serial_port_data(serial->port[i], NULL); + } + } +} /* klsi_105_shutdown */ + +static int klsi_105_open (struct usb_serial_port *port, struct file *filp) +{ + struct klsi_105_private *priv = usb_get_serial_port_data(port); + int retval = 0; + int rc; + int i; + unsigned long line_state; + struct klsi_105_port_settings cfg; + unsigned long flags; + + 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. + */ + cfg.pktlen = 5; + cfg.baudrate = kl5kusb105a_sio_b9600; + cfg.databits = kl5kusb105a_dtb_8; + cfg.unknown1 = 0; + cfg.unknown2 = 1; + klsi_105_chg_port_settings(port, &cfg); + + /* set up termios structure */ + spin_lock_irqsave (&priv->lock, flags); + 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]; + priv->cfg.pktlen = cfg.pktlen; + priv->cfg.baudrate = cfg.baudrate; + priv->cfg.databits = cfg.databits; + priv->cfg.unknown1 = cfg.unknown1; + priv->cfg.unknown2 = cfg.unknown2; + spin_unlock_irqrestore (&priv->lock, flags); + + /* READ_ON and urb submission */ + usb_fill_bulk_urb(port->read_urb, port->serial->dev, + usb_rcvbulkpipe(port->serial->dev, + port->bulk_in_endpointAddress), + port->read_urb->transfer_buffer, + port->read_urb->transfer_buffer_length, + klsi_105_read_bulk_callback, + port); + + rc = usb_submit_urb(port->read_urb, GFP_KERNEL); + if (rc) { + err("%s - failed submitting read urb, error %d", __FUNCTION__, rc); + retval = rc; + goto exit; + } + + rc = usb_control_msg(port->serial->dev, + usb_sndctrlpipe(port->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(port, &line_state); + if (rc >= 0) { + spin_lock_irqsave (&priv->lock, flags); + priv->line_state = line_state; + spin_unlock_irqrestore (&priv->lock, flags); + 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 klsi_105_private *priv = usb_get_serial_port_data(port); + int rc; + + dbg("%s port %d", __FUNCTION__, port->number); + + /* send READ_OFF */ + rc = usb_control_msg (port->serial->dev, + usb_sndctrlpipe(port->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_kill_urb(port->write_urb); + usb_kill_urb(port->read_urb); + /* unlink our write pool */ + /* FIXME */ + /* wgg - do I need this? I think so. */ + usb_kill_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, + const unsigned char *buf, int count) +{ + struct klsi_105_private *priv = usb_get_serial_port_data(port); + 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->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->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_ATOMIC); + 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); + + 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 */ + usb_fill_bulk_urb(urb, port->serial->dev, + usb_sndbulkpipe(port->serial->dev, + port->bulk_out_endpointAddress), + urb->transfer_buffer, + URB_TRANSFER_BUFFER_SIZE, + klsi_105_write_bulk_callback, + port); + + /* send the data out the bulk port */ + result = usb_submit_urb(urb, GFP_ATOMIC); + if (result) { + err("%s - failed submitting write urb, error %d", __FUNCTION__, result); + goto exit; + } + buf += size; + bytes_sent += size; + count -= size; + } +exit: + /* lockless, but it's for debug info only... */ + 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 pt_regs *regs) +{ + struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + + dbg("%s - port %d", __FUNCTION__, port->number); + + if (urb->status) { + dbg("%s - nonzero write bulk status received: %d", __FUNCTION__, + urb->status); + return; + } + + /* from generic_write_bulk_callback */ + schedule_work(&port->work); +} /* 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 = usb_get_serial_port_data(port); + + spin_lock_irqsave (&priv->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->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 = usb_get_serial_port_data(port); + + spin_lock_irqsave (&priv->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->lock, flags); + + dbg("%s - returns %d", __FUNCTION__, room); + return (room); +} + + + +static void klsi_105_read_bulk_callback (struct urb *urb, struct pt_regs *regs) +{ + struct usb_serial_port *port = (struct usb_serial_port *)urb->context; + struct klsi_105_private *priv = usb_get_serial_port_data(port); + 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; + } + + /* 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(debug, &port->dev, __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(debug, &port->dev, __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); + + /* again lockless, but debug info only */ + priv->bytes_in += bytes_sent; + } + /* Continue trying to always read */ + usb_fill_bulk_urb(port->read_urb, port->serial->dev, + usb_rcvbulkpipe(port->serial->dev, + port->bulk_in_endpointAddress), + port->read_urb->transfer_buffer, + port->read_urb->transfer_buffer_length, + klsi_105_read_bulk_callback, + port); + rc = usb_submit_urb(port->read_urb, GFP_ATOMIC); + 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 klsi_105_private *priv = usb_get_serial_port_data(port); + 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; + struct klsi_105_port_settings cfg; + unsigned long flags; + + /* lock while we are modifying the settings */ + spin_lock_irqsave (&priv->lock, flags); + + /* + * 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__); + spin_unlock_irqrestore (&priv->lock, flags); + return ; + case CS6: + dbg("%s - 6 bits/byte not supported", __FUNCTION__); + spin_unlock_irqrestore (&priv->lock, flags); + 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 + ; + } + memcpy (&cfg, &priv->cfg, sizeof(cfg)); + spin_unlock_irqrestore (&priv->lock, flags); + + /* now commit changes to device */ + klsi_105_chg_port_settings(port, &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_tiocmget (struct usb_serial_port *port, struct file *file) +{ + struct klsi_105_private *priv = usb_get_serial_port_data(port); + unsigned long flags; + int rc; + unsigned long line_state; + dbg("%s - request, just guessing", __FUNCTION__); + + rc = klsi_105_get_line_state(port, &line_state); + if (rc < 0) { + err("Reading line control failed (error = %d)", rc); + /* better return value? EAGAIN? */ + return rc; + } + + spin_lock_irqsave (&priv->lock, flags); + priv->line_state = line_state; + spin_unlock_irqrestore (&priv->lock, flags); + dbg("%s - read line state 0x%lx", __FUNCTION__, line_state); + return (int)line_state; +} + +static int klsi_105_tiocmset (struct usb_serial_port *port, struct file *file, + unsigned int set, unsigned int clear) +{ + int retval = -EINVAL; + + dbg("%s", __FUNCTION__); + +/* if this ever gets implemented, it should be done something like this: + struct usb_serial *serial = port->serial; + struct klsi_105_private *priv = usb_get_serial_port_data(port); + unsigned long flags; + int control; + + spin_lock_irqsave (&priv->lock, flags); + if (set & TIOCM_RTS) + priv->control_state |= TIOCM_RTS; + if (set & TIOCM_DTR) + priv->control_state |= TIOCM_DTR; + if (clear & TIOCM_RTS) + priv->control_state &= ~TIOCM_RTS; + if (clear & TIOCM_DTR) + priv->control_state &= ~TIOCM_DTR; + control = priv->control_state; + spin_unlock_irqrestore (&priv->lock, flags); + retval = mct_u232_set_modem_ctrl(serial, control); +*/ + return retval; +} + +static int klsi_105_ioctl (struct usb_serial_port *port, struct file * file, + unsigned int cmd, unsigned long arg) +{ + struct klsi_105_private *priv = usb_get_serial_port_data(port); + void __user *user_arg = (void __user *)arg; + + dbg("%scmd=0x%x", __FUNCTION__, cmd); + + /* Based on code from acm.c and others */ + switch (cmd) { + 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 */ + dbg("%s - TCGETS data faked/incomplete", __FUNCTION__); + + if (!access_ok(VERIFY_WRITE, user_arg, sizeof(struct termios))) + return -EFAULT; + + if (kernel_termios_to_user_termios((struct termios __user *)arg, + &priv->termios)) + return -EFAULT; + return 0; + case TCSETS: + /* set port termios to the one given by the user */ + dbg("%s - TCSETS not handled", __FUNCTION__); + + if (!access_ok(VERIFY_READ, user_arg, sizeof(struct termios))) + return -EFAULT; + + if (user_termios_to_kernel_termios(&priv->termios, + (struct termios __user *)arg)) + return -EFAULT; + 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_kill_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, GFP_ATOMIC); + if (result) + err("%s - failed submitting read urb, error %d", __FUNCTION__, + result); +} + + + +static int __init klsi_105_init (void) +{ + int retval; + retval = usb_serial_register(&kl5kusb105d_device); + if (retval) + goto failed_usb_serial_register; + retval = usb_register(&kl5kusb105d_driver); + if (retval) + goto failed_usb_register; + + info(DRIVER_DESC " " DRIVER_VERSION); + return 0; +failed_usb_register: + usb_serial_deregister(&kl5kusb105d_device); +failed_usb_serial_register: + return retval; +} + + +static void __exit klsi_105_exit (void) +{ + usb_deregister (&kl5kusb105d_driver); + 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_param(debug, bool, S_IRUGO | S_IWUSR); +MODULE_PARM_DESC(debug, "enable extensive debugging messages"); + +/* vim: set sts=8 ts=8 sw=8: */ |