* - Fixed an endianess problem with the baudrate selection for PowerPC.
*
* 06-Dec-2001 Martin Hamilton <martinh@gnu.org>
- * Added support for the Belkin F5U109 DB9 adaptor
+ * - Added support for the Belkin F5U109 DB9 adaptor
*
* 30-May-2001 Greg Kroah-Hartman
- * switched from using spinlock to a semaphore, which fixes lots of problems.
+ * - switched from using spinlock to a semaphore, which fixes lots of
+ * problems.
*
* 04-May-2001 Stelian Pop
* - Set the maximum bulk output size for Sitecom U232-P25 model to 16 bytes
* 08-Apr-2001 gb
* - Identify version on module load.
*
- * 06-Jan-2001 Cornel Ciocirlan
+ * 06-Jan-2001 Cornel Ciocirlan
* - Added support for Sitecom U232-P25 model (Product Id 0x0230)
* - Added support for D-Link DU-H3SP USB BAY (Product Id 0x0200)
*
* (lots of things will change if/when the usb-serial core changes to
* handle these issues.
*
- * 27-Nov-2000 Wolfgang Grandegger
- * A version for kernel 2.4.0-test10 released to the Linux community
+ * 27-Nov-2000 Wolfgang Grandegge
+ * A version for kernel 2.4.0-test10 released to the Linux community
* (via linux-usb-devel).
*/
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <linux/usb.h>
-#include "usb-serial.h"
+#include <linux/usb/serial.h>
#include "mct_u232.h"
/*
* Version Information
*/
-#define DRIVER_VERSION "z2.0" /* Linux in-kernel version */
+#define DRIVER_VERSION "z2.1" /* Linux in-kernel version */
#define DRIVER_AUTHOR "Wolfgang Grandegger <wolfgang@ces.ch>"
#define DRIVER_DESC "Magic Control Technology USB-RS232 converter driver"
/*
* Function prototypes
*/
-static int mct_u232_startup (struct usb_serial *serial);
-static void mct_u232_shutdown (struct usb_serial *serial);
-static int mct_u232_open (struct usb_serial_port *port,
- struct file *filp);
-static void mct_u232_close (struct usb_serial_port *port,
- struct file *filp);
-static void mct_u232_read_int_callback (struct urb *urb, struct pt_regs *regs);
-static void mct_u232_set_termios (struct usb_serial_port *port,
- struct termios * old);
-static int mct_u232_ioctl (struct usb_serial_port *port,
- struct file * file,
- unsigned int cmd,
- unsigned long arg);
-static void mct_u232_break_ctl (struct usb_serial_port *port,
- int break_state );
-static int mct_u232_tiocmget (struct usb_serial_port *port,
- struct file *file);
-static int mct_u232_tiocmset (struct usb_serial_port *port,
- struct file *file, unsigned int set,
- unsigned int clear);
+static int mct_u232_startup(struct usb_serial *serial);
+static void mct_u232_shutdown(struct usb_serial *serial);
+static int mct_u232_open(struct tty_struct *tty,
+ struct usb_serial_port *port, struct file *filp);
+static void mct_u232_close(struct tty_struct *tty,
+ struct usb_serial_port *port, struct file *filp);
+static void mct_u232_read_int_callback(struct urb *urb);
+static void mct_u232_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port, struct ktermios *old);
+static void mct_u232_break_ctl(struct tty_struct *tty, int break_state);
+static int mct_u232_tiocmget(struct tty_struct *tty, struct file *file);
+static int mct_u232_tiocmset(struct tty_struct *tty, struct file *file,
+ unsigned int set, unsigned int clear);
+static void mct_u232_throttle(struct tty_struct *tty);
+static void mct_u232_unthrottle(struct tty_struct *tty);
+
+
/*
* All of the device info needed for the MCT USB-RS232 converter.
*/
{ } /* Terminating entry */
};
-MODULE_DEVICE_TABLE (usb, id_table_combined);
+MODULE_DEVICE_TABLE(usb, id_table_combined);
static struct usb_driver mct_u232_driver = {
.name = "mct_u232",
.name = "mct_u232",
},
.description = "MCT U232",
+ .usb_driver = &mct_u232_driver,
.id_table = id_table_combined,
- .num_interrupt_in = 2,
- .num_bulk_in = 0,
- .num_bulk_out = 1,
.num_ports = 1,
.open = mct_u232_open,
.close = mct_u232_close,
+ .throttle = mct_u232_throttle,
+ .unthrottle = mct_u232_unthrottle,
.read_int_callback = mct_u232_read_int_callback,
- .ioctl = mct_u232_ioctl,
.set_termios = mct_u232_set_termios,
.break_ctl = mct_u232_break_ctl,
.tiocmget = mct_u232_tiocmget,
unsigned char last_lcr; /* Line Control Register */
unsigned char last_lsr; /* Line Status Register */
unsigned char last_msr; /* Modem Status Register */
+ unsigned int rx_flags; /* Throttling flags */
};
+#define THROTTLED 0x01
+
/*
* Handle vendor specific USB requests
*/
/*
* Later day 2.6.0-test kernels have new baud rates like B230400 which
* we do not know how to support. We ignore them for the moment.
- * XXX Rate-limit the error message, it's user triggerable.
*/
-static int mct_u232_calculate_baud_rate(struct usb_serial *serial, int value)
+static int mct_u232_calculate_baud_rate(struct usb_serial *serial,
+ speed_t value, speed_t *result)
{
+ *result = value;
+
if (le16_to_cpu(serial->dev->descriptor.idProduct) == MCT_U232_SITECOM_PID
- || le16_to_cpu(serial->dev->descriptor.idProduct) == MCT_U232_BELKIN_F5U109_PID) {
+ || le16_to_cpu(serial->dev->descriptor.idProduct) == MCT_U232_BELKIN_F5U109_PID) {
switch (value) {
- case B300: return 0x01;
- case B600: return 0x02; /* this one not tested */
- case B1200: return 0x03;
- case B2400: return 0x04;
- case B4800: return 0x06;
- case B9600: return 0x08;
- case B19200: return 0x09;
- case B38400: return 0x0a;
- case B57600: return 0x0b;
- case B115200: return 0x0c;
+ case 300:
+ return 0x01;
+ case 600:
+ return 0x02; /* this one not tested */
+ case 1200:
+ return 0x03;
+ case 2400:
+ return 0x04;
+ case 4800:
+ return 0x06;
+ case 9600:
+ return 0x08;
+ case 19200:
+ return 0x09;
+ case 38400:
+ return 0x0a;
+ case 57600:
+ return 0x0b;
+ case 115200:
+ return 0x0c;
default:
- err("MCT USB-RS232: unsupported baudrate request 0x%x,"
- " using default of B9600", value);
+ *result = 9600;
return 0x08;
}
} else {
+ /* FIXME: Can we use any divider - should we do
+ divider = 115200/value;
+ real baud = 115200/divider */
switch (value) {
- case B300: value = 300; break;
- case B600: value = 600; break;
- case B1200: value = 1200; break;
- case B2400: value = 2400; break;
- case B4800: value = 4800; break;
- case B9600: value = 9600; break;
- case B19200: value = 19200; break;
- case B38400: value = 38400; break;
- case B57600: value = 57600; break;
- case B115200: value = 115200; break;
+ case 300: break;
+ case 600: break;
+ case 1200: break;
+ case 2400: break;
+ case 4800: break;
+ case 9600: break;
+ case 19200: break;
+ case 38400: break;
+ case 57600: break;
+ case 115200: break;
default:
- err("MCT USB-RS232: unsupported baudrate request 0x%x,"
- " using default of B9600", value);
value = 9600;
+ *result = 9600;
}
return 115200/value;
}
}
-static int mct_u232_set_baud_rate(struct usb_serial *serial, int value)
+static int mct_u232_set_baud_rate(struct tty_struct *tty,
+ struct usb_serial *serial, struct usb_serial_port *port, speed_t value)
{
__le32 divisor;
- int rc;
- unsigned char zero_byte = 0;
+ int rc;
+ unsigned char zero_byte = 0;
+ unsigned char cts_enable_byte = 0;
+ speed_t speed;
- divisor = cpu_to_le32(mct_u232_calculate_baud_rate(serial, value));
+ divisor = cpu_to_le32(mct_u232_calculate_baud_rate(serial, value,
+ &speed));
- rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- MCT_U232_SET_BAUD_RATE_REQUEST,
- MCT_U232_SET_REQUEST_TYPE,
- 0, 0, &divisor, MCT_U232_SET_BAUD_RATE_SIZE,
- WDR_TIMEOUT);
- if (rc < 0)
- err("Set BAUD RATE %d failed (error = %d)", value, rc);
+ rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ MCT_U232_SET_BAUD_RATE_REQUEST,
+ MCT_U232_SET_REQUEST_TYPE,
+ 0, 0, &divisor, MCT_U232_SET_BAUD_RATE_SIZE,
+ WDR_TIMEOUT);
+ if (rc < 0) /*FIXME: What value speed results */
+ dev_err(&port->dev, "Set BAUD RATE %d failed (error = %d)\n",
+ value, rc);
+ else
+ tty_encode_baud_rate(tty, speed, speed);
dbg("set_baud_rate: value: 0x%x, divisor: 0x%x", value, divisor);
/* Mimic the MCT-supplied Windows driver (version 1.21P.0104), which
'baud rate change' message. The actual functionality of the
request codes in these messages is not fully understood but these
particular codes are never seen in any operation besides a baud
- rate change. Both of these messages send a single byte of data
- whose value is always zero. The second of these two extra messages
- is required in order for data to be properly written to an RS-232
- device which does not assert the 'CTS' signal. */
+ rate change. Both of these messages send a single byte of data.
+ In the first message, the value of this byte is always zero.
+
+ The second message has been determined experimentally to control
+ whether data will be transmitted to a device which is not asserting
+ the 'CTS' signal. If the second message's data byte is zero, data
+ will be transmitted even if 'CTS' is not asserted (i.e. no hardware
+ flow control). if the second message's data byte is nonzero (a
+ value of 1 is used by this driver), data will not be transmitted to
+ a device which is not asserting 'CTS'.
+ */
rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- MCT_U232_SET_UNKNOWN1_REQUEST,
- MCT_U232_SET_REQUEST_TYPE,
- 0, 0, &zero_byte, MCT_U232_SET_UNKNOWN1_SIZE,
- WDR_TIMEOUT);
+ MCT_U232_SET_UNKNOWN1_REQUEST,
+ MCT_U232_SET_REQUEST_TYPE,
+ 0, 0, &zero_byte, MCT_U232_SET_UNKNOWN1_SIZE,
+ WDR_TIMEOUT);
if (rc < 0)
- err("Sending USB device request code %d failed (error = %d)",
- MCT_U232_SET_UNKNOWN1_REQUEST, rc);
+ dev_err(&port->dev, "Sending USB device request code %d "
+ "failed (error = %d)\n", MCT_U232_SET_UNKNOWN1_REQUEST,
+ rc);
+
+ if (port && C_CRTSCTS(tty))
+ cts_enable_byte = 1;
+ dbg("set_baud_rate: send second control message, data = %02X",
+ cts_enable_byte);
rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- MCT_U232_SET_UNKNOWN2_REQUEST,
- MCT_U232_SET_REQUEST_TYPE,
- 0, 0, &zero_byte, MCT_U232_SET_UNKNOWN2_SIZE,
- WDR_TIMEOUT);
+ MCT_U232_SET_CTS_REQUEST,
+ MCT_U232_SET_REQUEST_TYPE,
+ 0, 0, &cts_enable_byte, MCT_U232_SET_CTS_SIZE,
+ WDR_TIMEOUT);
if (rc < 0)
- err("Sending USB device request code %d failed (error = %d)",
- MCT_U232_SET_UNKNOWN2_REQUEST, rc);
+ dev_err(&port->dev, "Sending USB device request code %d "
+ "failed (error = %d)\n", MCT_U232_SET_CTS_REQUEST, rc);
- return rc;
+ return rc;
} /* mct_u232_set_baud_rate */
static int mct_u232_set_line_ctrl(struct usb_serial *serial, unsigned char lcr)
{
- int rc;
- rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- MCT_U232_SET_LINE_CTRL_REQUEST,
- MCT_U232_SET_REQUEST_TYPE,
- 0, 0, &lcr, MCT_U232_SET_LINE_CTRL_SIZE,
- WDR_TIMEOUT);
+ int rc;
+ rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ MCT_U232_SET_LINE_CTRL_REQUEST,
+ MCT_U232_SET_REQUEST_TYPE,
+ 0, 0, &lcr, MCT_U232_SET_LINE_CTRL_SIZE,
+ WDR_TIMEOUT);
if (rc < 0)
- err("Set LINE CTRL 0x%x failed (error = %d)", lcr, rc);
+ dev_err(&serial->dev->dev,
+ "Set LINE CTRL 0x%x failed (error = %d)\n", lcr, rc);
dbg("set_line_ctrl: 0x%x", lcr);
- return rc;
+ return rc;
} /* mct_u232_set_line_ctrl */
static int mct_u232_set_modem_ctrl(struct usb_serial *serial,
unsigned int control_state)
{
- int rc;
+ int rc;
unsigned char mcr = MCT_U232_MCR_NONE;
if (control_state & TIOCM_DTR)
if (control_state & TIOCM_RTS)
mcr |= MCT_U232_MCR_RTS;
- rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- MCT_U232_SET_MODEM_CTRL_REQUEST,
- MCT_U232_SET_REQUEST_TYPE,
- 0, 0, &mcr, MCT_U232_SET_MODEM_CTRL_SIZE,
- WDR_TIMEOUT);
+ rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ MCT_U232_SET_MODEM_CTRL_REQUEST,
+ MCT_U232_SET_REQUEST_TYPE,
+ 0, 0, &mcr, MCT_U232_SET_MODEM_CTRL_SIZE,
+ WDR_TIMEOUT);
if (rc < 0)
- err("Set MODEM CTRL 0x%x failed (error = %d)", mcr, rc);
+ dev_err(&serial->dev->dev,
+ "Set MODEM CTRL 0x%x failed (error = %d)\n", mcr, rc);
dbg("set_modem_ctrl: state=0x%x ==> mcr=0x%x", control_state, mcr);
- return rc;
+ return rc;
} /* mct_u232_set_modem_ctrl */
-static int mct_u232_get_modem_stat(struct usb_serial *serial, unsigned char *msr)
+static int mct_u232_get_modem_stat(struct usb_serial *serial,
+ unsigned char *msr)
{
- int rc;
- rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
- MCT_U232_GET_MODEM_STAT_REQUEST,
- MCT_U232_GET_REQUEST_TYPE,
- 0, 0, msr, MCT_U232_GET_MODEM_STAT_SIZE,
- WDR_TIMEOUT);
+ int rc;
+ rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
+ MCT_U232_GET_MODEM_STAT_REQUEST,
+ MCT_U232_GET_REQUEST_TYPE,
+ 0, 0, msr, MCT_U232_GET_MODEM_STAT_SIZE,
+ WDR_TIMEOUT);
if (rc < 0) {
- err("Get MODEM STATus failed (error = %d)", rc);
+ dev_err(&serial->dev->dev,
+ "Get MODEM STATus failed (error = %d)\n", rc);
*msr = 0;
}
dbg("get_modem_stat: 0x%x", *msr);
- return rc;
+ return rc;
} /* mct_u232_get_modem_stat */
-static void mct_u232_msr_to_state(unsigned int *control_state, unsigned char msr)
+static void mct_u232_msr_to_state(unsigned int *control_state,
+ unsigned char msr)
{
- /* Translate Control Line states */
+ /* Translate Control Line states */
if (msr & MCT_U232_MSR_DSR)
*control_state |= TIOCM_DSR;
else
*control_state |= TIOCM_CD;
else
*control_state &= ~TIOCM_CD;
- dbg("msr_to_state: msr=0x%x ==> state=0x%x", msr, *control_state);
+ dbg("msr_to_state: msr=0x%x ==> state=0x%x", msr, *control_state);
} /* mct_u232_msr_to_state */
/*
* Driver's tty interface functions
*/
-static int mct_u232_startup (struct usb_serial *serial)
+static int mct_u232_startup(struct usb_serial *serial)
{
struct mct_u232_private *priv;
struct usb_serial_port *port, *rport;
/* Puh, that's dirty */
port = serial->port[0];
rport = serial->port[1];
- if (port->read_urb) {
- /* No unlinking, it wasn't submitted yet. */
- usb_free_urb(port->read_urb);
- }
+ /* No unlinking, it wasn't submitted yet. */
+ usb_free_urb(port->read_urb);
port->read_urb = rport->interrupt_in_urb;
rport->interrupt_in_urb = NULL;
port->read_urb->context = port;
- return (0);
+ return 0;
} /* mct_u232_startup */
-static void mct_u232_shutdown (struct usb_serial *serial)
+static void mct_u232_shutdown(struct usb_serial *serial)
{
struct mct_u232_private *priv;
int i;
-
- dbg("%s", __FUNCTION__);
- for (i=0; i < serial->num_ports; ++i) {
+ dbg("%s", __func__);
+
+ for (i = 0; i < serial->num_ports; ++i) {
/* My special items, the standard routines free my urbs */
priv = usb_get_serial_port_data(serial->port[i]);
if (priv) {
}
} /* mct_u232_shutdown */
-static int mct_u232_open (struct usb_serial_port *port, struct file *filp)
+static int mct_u232_open(struct tty_struct *tty,
+ struct usb_serial_port *port, struct file *filp)
{
struct usb_serial *serial = port->serial;
struct mct_u232_private *priv = usb_get_serial_port_data(port);
unsigned char last_lcr;
unsigned char last_msr;
- dbg("%s port %d", __FUNCTION__, port->number);
+ dbg("%s port %d", __func__, port->number);
/* Compensate for a hardware bug: although the Sitecom U232-P25
* device reports a maximum output packet size of 32 bytes,
* it seems to be able to accept only 16 bytes (and that's what
* SniffUSB says too...)
*/
- if (le16_to_cpu(serial->dev->descriptor.idProduct) == MCT_U232_SITECOM_PID)
+ if (le16_to_cpu(serial->dev->descriptor.idProduct)
+ == MCT_U232_SITECOM_PID)
port->bulk_out_size = 16;
- /* Do a defined restart: the normal serial device seems to
+ /* Do a defined restart: the normal serial device seems to
* always turn on DTR and RTS here, so do the same. I'm not
* sure if this is really necessary. But it should not harm
* either.
*/
spin_lock_irqsave(&priv->lock, flags);
- if (port->tty->termios->c_cflag & CBAUD)
+ if (tty && (tty->termios->c_cflag & CBAUD))
priv->control_state = TIOCM_DTR | TIOCM_RTS;
else
priv->control_state = 0;
-
- priv->last_lcr = (MCT_U232_DATA_BITS_8 |
+
+ priv->last_lcr = (MCT_U232_DATA_BITS_8 |
MCT_U232_PARITY_NONE |
MCT_U232_STOP_BITS_1);
control_state = priv->control_state;
port->read_urb->dev = port->serial->dev;
retval = usb_submit_urb(port->read_urb, GFP_KERNEL);
if (retval) {
- err("usb_submit_urb(read bulk) failed pipe 0x%x err %d",
- port->read_urb->pipe, retval);
- goto exit;
+ dev_err(&port->dev,
+ "usb_submit_urb(read bulk) failed pipe 0x%x err %d\n",
+ port->read_urb->pipe, retval);
+ goto error;
}
port->interrupt_in_urb->dev = port->serial->dev;
retval = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
- if (retval)
- err(" usb_submit_urb(read int) failed pipe 0x%x err %d",
- port->interrupt_in_urb->pipe, retval);
-
-exit:
+ if (retval) {
+ usb_kill_urb(port->read_urb);
+ dev_err(&port->dev,
+ "usb_submit_urb(read int) failed pipe 0x%x err %d",
+ port->interrupt_in_urb->pipe, retval);
+ goto error;
+ }
return 0;
+
+error:
+ return retval;
} /* mct_u232_open */
-static void mct_u232_close (struct usb_serial_port *port, struct file *filp)
+static void mct_u232_close(struct tty_struct *tty,
+ struct usb_serial_port *port, struct file *filp)
{
- dbg("%s port %d", __FUNCTION__, port->number);
+ unsigned int c_cflag;
+ unsigned int control_state;
+ struct mct_u232_private *priv = usb_get_serial_port_data(port);
+ dbg("%s port %d", __func__, port->number);
+
+ if (tty) {
+ c_cflag = tty->termios->c_cflag;
+ mutex_lock(&port->serial->disc_mutex);
+ if (c_cflag & HUPCL && !port->serial->disconnected) {
+ /* drop DTR and RTS */
+ spin_lock_irq(&priv->lock);
+ priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
+ control_state = priv->control_state;
+ spin_unlock_irq(&priv->lock);
+ mct_u232_set_modem_ctrl(port->serial, control_state);
+ }
+ mutex_unlock(&port->serial->disc_mutex);
+ }
+
if (port->serial->dev) {
/* shutdown our urbs */
} /* mct_u232_close */
-static void mct_u232_read_int_callback (struct urb *urb, struct pt_regs *regs)
+static void mct_u232_read_int_callback(struct urb *urb)
{
- struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+ struct usb_serial_port *port = urb->context;
struct mct_u232_private *priv = usb_get_serial_port_data(port);
struct usb_serial *serial = port->serial;
struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
- int status;
+ int retval;
+ int status = urb->status;
unsigned long flags;
- switch (urb->status) {
+ switch (status) {
case 0:
/* success */
break;
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
- dbg("%s - urb shutting down with status: %d", __FUNCTION__, urb->status);
+ dbg("%s - urb shutting down with status: %d",
+ __func__, status);
return;
default:
- dbg("%s - nonzero urb status received: %d", __FUNCTION__, urb->status);
+ dbg("%s - nonzero urb status received: %d",
+ __func__, status);
goto exit;
}
if (!serial) {
- dbg("%s - bad serial pointer, exiting", __FUNCTION__);
+ dbg("%s - bad serial pointer, exiting", __func__);
return;
}
- dbg("%s - port %d", __FUNCTION__, port->number);
- usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
+ dbg("%s - port %d", __func__, port->number);
+ usb_serial_debug_data(debug, &port->dev, __func__,
+ urb->actual_length, data);
/*
* Work-a-round: handle the 'usual' bulk-in pipe here
*/
if (urb->transfer_buffer_length > 2) {
- int i;
- tty = port->tty;
+ tty = tty_port_tty_get(&port->port);
if (urb->actual_length) {
- for (i = 0; i < urb->actual_length ; ++i) {
- tty_insert_flip_char(tty, data[i], 0);
- }
+ tty_insert_flip_string(tty, data, urb->actual_length);
tty_flip_buffer_push(tty);
+ tty_kref_put(tty);
}
goto exit;
}
-
+
/*
* The interrupt-in pipe signals exceptional conditions (modem line
* signal changes and errors). data[0] holds MSR, data[1] holds LSR.
*/
spin_lock_irqsave(&priv->lock, flags);
priv->last_msr = data[MCT_U232_MSR_INDEX];
-
+
/* Record Control Line states */
mct_u232_msr_to_state(&priv->control_state, priv->last_msr);
#if 0
- /* Not yet handled. See belin_sa.c for further information */
+ /* Not yet handled. See belkin_sa.c for further information */
/* Now to report any errors */
priv->last_lsr = data[MCT_U232_LSR_INDEX];
/*
* to look in to this before committing any code.
*/
if (priv->last_lsr & MCT_U232_LSR_ERR) {
- tty = port->tty;
+ tty = tty_port_tty_get(&port->port);
/* Overrun Error */
if (priv->last_lsr & MCT_U232_LSR_OE) {
}
/* Break Indicator */
if (priv->last_lsr & MCT_U232_LSR_BI) {
}
+ tty_kref_put(tty);
}
#endif
spin_unlock_irqrestore(&priv->lock, flags);
exit:
- status = usb_submit_urb (urb, GFP_ATOMIC);
- if (status)
- err ("%s - usb_submit_urb failed with result %d",
- __FUNCTION__, status);
+ retval = usb_submit_urb(urb, GFP_ATOMIC);
+ if (retval)
+ dev_err(&port->dev,
+ "%s - usb_submit_urb failed with result %d\n",
+ __func__, retval);
} /* mct_u232_read_int_callback */
-static void mct_u232_set_termios (struct usb_serial_port *port,
- struct termios *old_termios)
+static void mct_u232_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port,
+ struct ktermios *old_termios)
{
struct usb_serial *serial = port->serial;
struct mct_u232_private *priv = usb_get_serial_port_data(port);
- unsigned int iflag = port->tty->termios->c_iflag;
- unsigned int cflag = port->tty->termios->c_cflag;
+ struct ktermios *termios = tty->termios;
+ unsigned int cflag = termios->c_cflag;
unsigned int old_cflag = old_termios->c_cflag;
unsigned long flags;
- unsigned int control_state, new_state;
+ unsigned int control_state;
unsigned char last_lcr;
/* get a local copy of the current port settings */
* Premature optimization is the root of all evil.
*/
- /* reassert DTR and (maybe) RTS on transition from B0 */
+ /* reassert DTR and RTS on transition from B0 */
if ((old_cflag & CBAUD) == B0) {
- dbg("%s: baud was B0", __FUNCTION__);
- control_state |= TIOCM_DTR;
- /* don't set RTS if using hardware flow control */
- if (!(old_cflag & CRTSCTS)) {
- control_state |= TIOCM_RTS;
- }
+ dbg("%s: baud was B0", __func__);
+ control_state |= TIOCM_DTR | TIOCM_RTS;
mct_u232_set_modem_ctrl(serial, control_state);
}
- mct_u232_set_baud_rate(serial, cflag & CBAUD);
+ mct_u232_set_baud_rate(tty, serial, port, tty_get_baud_rate(tty));
- if ((cflag & CBAUD) == B0 ) {
- dbg("%s: baud is B0", __FUNCTION__);
+ if ((cflag & CBAUD) == B0) {
+ dbg("%s: baud is B0", __func__);
/* Drop RTS and DTR */
control_state &= ~(TIOCM_DTR | TIOCM_RTS);
- mct_u232_set_modem_ctrl(serial, control_state);
+ mct_u232_set_modem_ctrl(serial, control_state);
}
/*
case CS8:
last_lcr |= MCT_U232_DATA_BITS_8; break;
default:
- err("CSIZE was not CS5-CS8, using default of 8");
+ dev_err(&port->dev,
+ "CSIZE was not CS5-CS8, using default of 8\n");
last_lcr |= MCT_U232_DATA_BITS_8;
break;
}
+ termios->c_cflag &= ~CMSPAR;
+
/* set the number of stop bits */
last_lcr |= (cflag & CSTOPB) ?
MCT_U232_STOP_BITS_2 : MCT_U232_STOP_BITS_1;
mct_u232_set_line_ctrl(serial, last_lcr);
- /*
- * Set flow control: well, I do not really now how to handle DTR/RTS.
- * Just do what we have seen with SniffUSB on Win98.
- */
- /* Drop DTR/RTS if no flow control otherwise assert */
- new_state = control_state;
- if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS))
- new_state |= TIOCM_DTR | TIOCM_RTS;
- else
- new_state &= ~(TIOCM_DTR | TIOCM_RTS);
- if (new_state != control_state) {
- mct_u232_set_modem_ctrl(serial, new_state);
- control_state = new_state;
- }
-
/* save off the modified port settings */
spin_lock_irqsave(&priv->lock, flags);
priv->control_state = control_state;
spin_unlock_irqrestore(&priv->lock, flags);
} /* mct_u232_set_termios */
-static void mct_u232_break_ctl( struct usb_serial_port *port, int break_state )
+static void mct_u232_break_ctl(struct tty_struct *tty, int break_state)
{
+ struct usb_serial_port *port = tty->driver_data;
struct usb_serial *serial = port->serial;
struct mct_u232_private *priv = usb_get_serial_port_data(port);
unsigned char lcr;
unsigned long flags;
- dbg("%sstate=%d", __FUNCTION__, break_state);
+ dbg("%sstate=%d", __func__, break_state);
spin_lock_irqsave(&priv->lock, flags);
lcr = priv->last_lcr;
- spin_unlock_irqrestore(&priv->lock, flags);
if (break_state)
lcr |= MCT_U232_SET_BREAK;
+ spin_unlock_irqrestore(&priv->lock, flags);
mct_u232_set_line_ctrl(serial, lcr);
} /* mct_u232_break_ctl */
-static int mct_u232_tiocmget (struct usb_serial_port *port, struct file *file)
+static int mct_u232_tiocmget(struct tty_struct *tty, struct file *file)
{
+ struct usb_serial_port *port = tty->driver_data;
struct mct_u232_private *priv = usb_get_serial_port_data(port);
unsigned int control_state;
unsigned long flags;
-
- dbg("%s", __FUNCTION__);
+
+ dbg("%s", __func__);
spin_lock_irqsave(&priv->lock, flags);
control_state = priv->control_state;
return control_state;
}
-static int mct_u232_tiocmset (struct usb_serial_port *port, struct file *file,
+static int mct_u232_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
+ struct usb_serial_port *port = tty->driver_data;
struct usb_serial *serial = port->serial;
struct mct_u232_private *priv = usb_get_serial_port_data(port);
unsigned int control_state;
unsigned long flags;
-
- dbg("%s", __FUNCTION__);
+
+ dbg("%s", __func__);
spin_lock_irqsave(&priv->lock, flags);
control_state = priv->control_state;
return mct_u232_set_modem_ctrl(serial, control_state);
}
-static int mct_u232_ioctl (struct usb_serial_port *port, struct file * file,
- unsigned int cmd, unsigned long arg)
+static void mct_u232_throttle(struct tty_struct *tty)
{
- 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 */
- return( 0 );
+ struct usb_serial_port *port = tty->driver_data;
+ struct mct_u232_private *priv = usb_get_serial_port_data(port);
+ unsigned long flags;
+ unsigned int control_state;
- case TIOCGICOUNT:
- /* return count of modemline transitions */
- /* TODO */
- return 0;
+ dbg("%s - port %d", __func__, port->number);
- default:
- dbg("%s: arg not supported - 0x%04x", __FUNCTION__,cmd);
- return(-ENOIOCTLCMD);
- break;
+ spin_lock_irqsave(&priv->lock, flags);
+ priv->rx_flags |= THROTTLED;
+ if (C_CRTSCTS(tty)) {
+ priv->control_state &= ~TIOCM_RTS;
+ control_state = priv->control_state;
+ spin_unlock_irqrestore(&priv->lock, flags);
+ (void) mct_u232_set_modem_ctrl(port->serial, control_state);
+ } else {
+ spin_unlock_irqrestore(&priv->lock, flags);
}
- return 0;
-} /* mct_u232_ioctl */
+}
-static int __init mct_u232_init (void)
+static void mct_u232_unthrottle(struct tty_struct *tty)
+{
+ struct usb_serial_port *port = tty->driver_data;
+ struct mct_u232_private *priv = usb_get_serial_port_data(port);
+ unsigned long flags;
+ unsigned int control_state;
+
+ dbg("%s - port %d", __func__, port->number);
+
+ spin_lock_irqsave(&priv->lock, flags);
+ if ((priv->rx_flags & THROTTLED) && C_CRTSCTS(tty)) {
+ priv->rx_flags &= ~THROTTLED;
+ priv->control_state |= TIOCM_RTS;
+ control_state = priv->control_state;
+ spin_unlock_irqrestore(&priv->lock, flags);
+ (void) mct_u232_set_modem_ctrl(port->serial, control_state);
+ } else {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ }
+}
+
+static int __init mct_u232_init(void)
{
int retval;
retval = usb_serial_register(&mct_u232_device);
retval = usb_register(&mct_u232_driver);
if (retval)
goto failed_usb_register;
- info(DRIVER_DESC " " DRIVER_VERSION);
+ printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
+ DRIVER_DESC "\n");
return 0;
failed_usb_register:
usb_serial_deregister(&mct_u232_device);
}
-static void __exit mct_u232_exit (void)
+static void __exit mct_u232_exit(void)
{
- usb_deregister (&mct_u232_driver);
- usb_serial_deregister (&mct_u232_device);
+ usb_deregister(&mct_u232_driver);
+ usb_serial_deregister(&mct_u232_device);
}
-
-module_init (mct_u232_init);
+module_init(mct_u232_init);
module_exit(mct_u232_exit);
-MODULE_AUTHOR( DRIVER_AUTHOR );
-MODULE_DESCRIPTION( DRIVER_DESC );
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
module_param(debug, bool, S_IRUGO | S_IWUSR);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff