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path: root/drivers/usb/serial/mct_u232.c
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Diffstat (limited to 'drivers/usb/serial/mct_u232.c')
-rw-r--r--drivers/usb/serial/mct_u232.c687
1 files changed, 299 insertions, 388 deletions
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c
index fc1cea4aba1..fd707d6a10e 100644
--- a/drivers/usb/serial/mct_u232.c
+++ b/drivers/usb/serial/mct_u232.c
@@ -19,121 +19,56 @@
* DTR/RTS signal handling may be incomplete or incorrect. I have mainly
* implemented what I have seen with SniffUSB or found in belkin_sa.c.
* For further TODOs check also belkin_sa.c.
- *
- * TEST STATUS:
- * Basic tests have been performed with minicom/zmodem transfers and
- * modem dialing under Linux 2.4.0-test10 (for me it works fine).
- *
- * 04-Nov-2003 Bill Marr <marr at flex dot com>
- * - Mimic Windows driver by sending 2 USB 'device request' messages
- * following normal 'baud rate change' message. This allows data to be
- * transmitted to RS-232 devices which don't assert the 'CTS' signal.
- *
- * 10-Nov-2001 Wolfgang Grandegger
- * - 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
- *
- * 30-May-2001 Greg Kroah-Hartman
- * 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
- * instead of the device reported 32 (using 32 bytes causes many data
- * loss, Windows driver uses 16 too).
- *
- * 02-May-2001 Stelian Pop
- * - Fixed the baud calculation for Sitecom U232-P25 model
- *
- * 08-Apr-2001 gb
- * - Identify version on module load.
- *
- * 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)
- *
- * 29-Nov-2000 Greg Kroah-Hartman
- * - Added device id table to fit with 2.4.0-test11 structure.
- * - took out DEAL_WITH_TWO_INT_IN_ENDPOINTS #define as it's not needed
- * (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
- * (via linux-usb-devel).
*/
#include <linux/kernel.h>
#include <linux/errno.h>
-#include <linux/init.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
#include <linux/tty_flip.h>
#include <linux/module.h>
#include <linux/spinlock.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
+#include <asm/unaligned.h>
#include <linux/usb.h>
#include <linux/usb/serial.h>
+#include <linux/serial.h>
#include "mct_u232.h"
-/*
- * Version Information
- */
-#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"
-static int debug;
-
/*
* 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);
-static void mct_u232_set_termios (struct usb_serial_port *port,
- struct ktermios * 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 void mct_u232_throttle (struct usb_serial_port *port);
-static void mct_u232_unthrottle (struct usb_serial_port *port);
+static int mct_u232_port_probe(struct usb_serial_port *port);
+static int mct_u232_port_remove(struct usb_serial_port *remove);
+static int mct_u232_open(struct tty_struct *tty, struct usb_serial_port *port);
+static void mct_u232_close(struct usb_serial_port *port);
+static void mct_u232_dtr_rts(struct usb_serial_port *port, int on);
+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);
+static int mct_u232_tiocmset(struct tty_struct *tty,
+ 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.
*/
-static struct usb_device_id id_table_combined [] = {
+static const struct usb_device_id id_table[] = {
{ USB_DEVICE(MCT_U232_VID, MCT_U232_PID) },
{ USB_DEVICE(MCT_U232_VID, MCT_U232_SITECOM_PID) },
{ USB_DEVICE(MCT_U232_VID, MCT_U232_DU_H3SP_PID) },
{ USB_DEVICE(MCT_U232_BELKIN_F5U109_VID, MCT_U232_BELKIN_F5U109_PID) },
{ } /* Terminating entry */
};
-
-MODULE_DEVICE_TABLE (usb, id_table_combined);
-
-static struct usb_driver mct_u232_driver = {
- .name = "mct_u232",
- .probe = usb_serial_probe,
- .disconnect = usb_serial_disconnect,
- .id_table = id_table_combined,
- .no_dynamic_id = 1,
-};
+MODULE_DEVICE_TABLE(usb, id_table);
static struct usb_serial_driver mct_u232_device = {
.driver = {
@@ -141,28 +76,30 @@ static struct usb_serial_driver mct_u232_device = {
.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,
+ .id_table = id_table,
.num_ports = 1,
.open = mct_u232_open,
.close = mct_u232_close,
+ .dtr_rts = mct_u232_dtr_rts,
.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,
.tiocmset = mct_u232_tiocmset,
- .attach = mct_u232_startup,
- .shutdown = mct_u232_shutdown,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
+ .port_probe = mct_u232_port_probe,
+ .port_remove = mct_u232_port_remove,
+ .get_icount = usb_serial_generic_get_icount,
};
+static struct usb_serial_driver * const serial_drivers[] = {
+ &mct_u232_device, NULL
+};
struct mct_u232_private {
+ struct urb *read_urb;
spinlock_t lock;
unsigned int control_state; /* Modem Line Setting (TIOCM) */
unsigned char last_lcr; /* Line Control Register */
@@ -183,23 +120,34 @@ struct mct_u232_private {
* 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.
*/
-static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value, speed_t *result)
+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 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;
+ 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:
*result = 9600;
return 0x08;
@@ -227,27 +175,32 @@ static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value
}
}
-static int mct_u232_set_baud_rate(struct usb_serial *serial, struct usb_serial_port *port,
- speed_t 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;
- unsigned char cts_enable_byte = 0;
- speed_t speed;
-
- 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);
+ unsigned int divisor;
+ int rc;
+ unsigned char *buf;
+ unsigned char cts_enable_byte = 0;
+ speed_t speed;
+
+ buf = kmalloc(MCT_U232_MAX_SIZE, GFP_KERNEL);
+ if (buf == NULL)
+ return -ENOMEM;
+
+ divisor = mct_u232_calculate_baud_rate(serial, value, &speed);
+ put_unaligned_le32(cpu_to_le32(divisor), buf);
+ rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ MCT_U232_SET_BAUD_RATE_REQUEST,
+ MCT_U232_SET_REQUEST_TYPE,
+ 0, 0, buf, MCT_U232_SET_BAUD_RATE_SIZE,
+ WDR_TIMEOUT);
if (rc < 0) /*FIXME: What value speed results */
- err("Set BAUD RATE %d failed (error = %d)", value, rc);
+ dev_err(&port->dev, "Set BAUD RATE %d failed (error = %d)\n",
+ value, rc);
else
- tty_encode_baud_rate(port->tty, speed, speed);
- dbg("set_baud_rate: value: 0x%x, divisor: 0x%x", value, divisor);
+ tty_encode_baud_rate(tty, speed, speed);
+ dev_dbg(&port->dev, "set_baud_rate: value: 0x%x, divisor: 0x%x\n", value, divisor);
/* Mimic the MCT-supplied Windows driver (version 1.21P.0104), which
always sends two extra USB 'device request' messages after the
@@ -261,93 +214,143 @@ static int mct_u232_set_baud_rate(struct usb_serial *serial, struct usb_serial_p
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'.
+ 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'.
*/
+ buf[0] = 0;
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, buf, 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(port->tty)) {
+ if (port && C_CRTSCTS(tty))
cts_enable_byte = 1;
- }
- dbg("set_baud_rate: send second control message, data = %02X", cts_enable_byte);
+ dev_dbg(&port->dev, "set_baud_rate: send second control message, data = %02X\n",
+ cts_enable_byte);
+ buf[0] = cts_enable_byte;
rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- MCT_U232_SET_CTS_REQUEST,
- MCT_U232_SET_REQUEST_TYPE,
- 0, 0, &cts_enable_byte, MCT_U232_SET_CTS_SIZE,
- WDR_TIMEOUT);
+ MCT_U232_SET_CTS_REQUEST,
+ MCT_U232_SET_REQUEST_TYPE,
+ 0, 0, buf, MCT_U232_SET_CTS_SIZE,
+ WDR_TIMEOUT);
if (rc < 0)
- err("Sending USB device request code %d failed (error = %d)",
- MCT_U232_SET_CTS_REQUEST, rc);
+ dev_err(&port->dev, "Sending USB device request code %d "
+ "failed (error = %d)\n", MCT_U232_SET_CTS_REQUEST, rc);
- return rc;
+ kfree(buf);
+ return rc;
} /* mct_u232_set_baud_rate */
-static int mct_u232_set_line_ctrl(struct usb_serial *serial, unsigned char lcr)
+static int mct_u232_set_line_ctrl(struct usb_serial_port *port,
+ 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;
+ unsigned char *buf;
+
+ buf = kmalloc(MCT_U232_MAX_SIZE, GFP_KERNEL);
+ if (buf == NULL)
+ return -ENOMEM;
+
+ buf[0] = lcr;
+ rc = usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0),
+ MCT_U232_SET_LINE_CTRL_REQUEST,
+ MCT_U232_SET_REQUEST_TYPE,
+ 0, 0, buf, MCT_U232_SET_LINE_CTRL_SIZE,
+ WDR_TIMEOUT);
if (rc < 0)
- err("Set LINE CTRL 0x%x failed (error = %d)", lcr, rc);
- dbg("set_line_ctrl: 0x%x", lcr);
- return rc;
+ dev_err(&port->dev, "Set LINE CTRL 0x%x failed (error = %d)\n", lcr, rc);
+ dev_dbg(&port->dev, "set_line_ctrl: 0x%x\n", lcr);
+ kfree(buf);
+ return rc;
} /* mct_u232_set_line_ctrl */
-static int mct_u232_set_modem_ctrl(struct usb_serial *serial,
+static int mct_u232_set_modem_ctrl(struct usb_serial_port *port,
unsigned int control_state)
{
- int rc;
- unsigned char mcr = MCT_U232_MCR_NONE;
+ int rc;
+ unsigned char mcr;
+ unsigned char *buf;
+ buf = kmalloc(MCT_U232_MAX_SIZE, GFP_KERNEL);
+ if (buf == NULL)
+ return -ENOMEM;
+
+ mcr = MCT_U232_MCR_NONE;
if (control_state & TIOCM_DTR)
mcr |= MCT_U232_MCR_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);
- if (rc < 0)
- err("Set MODEM CTRL 0x%x failed (error = %d)", mcr, rc);
- dbg("set_modem_ctrl: state=0x%x ==> mcr=0x%x", control_state, mcr);
+ buf[0] = mcr;
+ rc = usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0),
+ MCT_U232_SET_MODEM_CTRL_REQUEST,
+ MCT_U232_SET_REQUEST_TYPE,
+ 0, 0, buf, MCT_U232_SET_MODEM_CTRL_SIZE,
+ WDR_TIMEOUT);
+ kfree(buf);
- return rc;
+ dev_dbg(&port->dev, "set_modem_ctrl: state=0x%x ==> mcr=0x%x\n", control_state, mcr);
+
+ if (rc < 0) {
+ dev_err(&port->dev, "Set MODEM CTRL 0x%x failed (error = %d)\n", mcr, rc);
+ return rc;
+ }
+ return 0;
} /* 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_port *port,
+ 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;
+ unsigned char *buf;
+
+ buf = kmalloc(MCT_U232_MAX_SIZE, GFP_KERNEL);
+ if (buf == NULL) {
+ *msr = 0;
+ return -ENOMEM;
+ }
+ rc = usb_control_msg(port->serial->dev, usb_rcvctrlpipe(port->serial->dev, 0),
+ MCT_U232_GET_MODEM_STAT_REQUEST,
+ MCT_U232_GET_REQUEST_TYPE,
+ 0, 0, buf, MCT_U232_GET_MODEM_STAT_SIZE,
+ WDR_TIMEOUT);
if (rc < 0) {
- err("Get MODEM STATus failed (error = %d)", rc);
+ dev_err(&port->dev, "Get MODEM STATus failed (error = %d)\n", rc);
*msr = 0;
+ } else {
+ *msr = buf[0];
}
- dbg("get_modem_stat: 0x%x", *msr);
- return rc;
+ dev_dbg(&port->dev, "get_modem_stat: 0x%x\n", *msr);
+ kfree(buf);
+ 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_icount(struct async_icount *icount,
+ unsigned char msr)
+{
+ /* Translate Control Line states */
+ if (msr & MCT_U232_MSR_DDSR)
+ icount->dsr++;
+ if (msr & MCT_U232_MSR_DCTS)
+ icount->cts++;
+ if (msr & MCT_U232_MSR_DRI)
+ icount->rng++;
+ if (msr & MCT_U232_MSR_DCD)
+ icount->dcd++;
+} /* mct_u232_msr_to_icount */
+
+static void mct_u232_msr_to_state(struct usb_serial_port *port,
+ 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
@@ -364,57 +367,43 @@ static void mct_u232_msr_to_state(unsigned int *control_state, unsigned char msr
*control_state |= TIOCM_CD;
else
*control_state &= ~TIOCM_CD;
- dbg("msr_to_state: msr=0x%x ==> state=0x%x", msr, *control_state);
+ dev_dbg(&port->dev, "msr_to_state: msr=0x%x ==> state=0x%x\n", 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_port_probe(struct usb_serial_port *port)
{
struct mct_u232_private *priv;
- struct usb_serial_port *port, *rport;
- priv = kzalloc(sizeof(struct mct_u232_private), GFP_KERNEL);
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
if (!priv)
return -ENOMEM;
- spin_lock_init(&priv->lock);
- usb_set_serial_port_data(serial->port[0], priv);
- init_waitqueue_head(&serial->port[0]->write_wait);
+ /* Use second interrupt-in endpoint for reading. */
+ priv->read_urb = port->serial->port[1]->interrupt_in_urb;
+ priv->read_urb->context = port;
- /* Puh, that's dirty */
- port = serial->port[0];
- rport = serial->port[1];
- /* 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;
+ spin_lock_init(&priv->lock);
- return (0);
-} /* mct_u232_startup */
+ usb_set_serial_port_data(port, priv);
+ return 0;
+}
-static void mct_u232_shutdown (struct usb_serial *serial)
+static int mct_u232_port_remove(struct usb_serial_port *port)
{
struct mct_u232_private *priv;
- int i;
-
- dbg("%s", __FUNCTION__);
-
- 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) {
- usb_set_serial_port_data(serial->port[i], NULL);
- kfree(priv);
- }
- }
-} /* mct_u232_shutdown */
-static int mct_u232_open (struct usb_serial_port *port, struct file *filp)
+ priv = usb_get_serial_port_data(port);
+ kfree(priv);
+
+ return 0;
+}
+
+static int mct_u232_open(struct tty_struct *tty, struct usb_serial_port *port)
{
struct usb_serial *serial = port->serial;
struct mct_u232_private *priv = usb_get_serial_port_data(port);
@@ -424,57 +413,56 @@ static int mct_u232_open (struct usb_serial_port *port, struct file *filp)
unsigned char last_lcr;
unsigned char last_msr;
- dbg("%s port %d", __FUNCTION__, 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;
last_lcr = priv->last_lcr;
spin_unlock_irqrestore(&priv->lock, flags);
- mct_u232_set_modem_ctrl(serial, control_state);
- mct_u232_set_line_ctrl(serial, last_lcr);
+ mct_u232_set_modem_ctrl(port, control_state);
+ mct_u232_set_line_ctrl(port, last_lcr);
/* Read modem status and update control state */
- mct_u232_get_modem_stat(serial, &last_msr);
+ mct_u232_get_modem_stat(port, &last_msr);
spin_lock_irqsave(&priv->lock, flags);
priv->last_msr = last_msr;
- mct_u232_msr_to_state(&priv->control_state, priv->last_msr);
+ mct_u232_msr_to_state(port, &priv->control_state, priv->last_msr);
spin_unlock_irqrestore(&priv->lock, flags);
- port->read_urb->dev = port->serial->dev;
- retval = usb_submit_urb(port->read_urb, GFP_KERNEL);
+ retval = usb_submit_urb(priv->read_urb, GFP_KERNEL);
if (retval) {
- err("usb_submit_urb(read bulk) failed pipe 0x%x err %d",
- port->read_urb->pipe, retval);
+ dev_err(&port->dev,
+ "usb_submit_urb(read) 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) {
- usb_kill_urb(port->read_urb);
- err(" usb_submit_urb(read int) failed pipe 0x%x err %d",
- port->interrupt_in_urb->pipe, retval);
+ usb_kill_urb(priv->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;
@@ -483,44 +471,37 @@ error:
return retval;
} /* mct_u232_open */
-
-static void mct_u232_close (struct usb_serial_port *port, struct file *filp)
+static void mct_u232_dtr_rts(struct usb_serial_port *port, int on)
{
- unsigned int c_cflag;
unsigned int control_state;
struct mct_u232_private *priv = usb_get_serial_port_data(port);
- dbg("%s port %d", __FUNCTION__, port->number);
-
- if (port->tty) {
- c_cflag = port->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);
- }
+ spin_lock_irq(&priv->lock);
+ if (on)
+ priv->control_state |= TIOCM_DTR | TIOCM_RTS;
+ else
+ priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
+ control_state = priv->control_state;
+ spin_unlock_irq(&priv->lock);
- if (port->serial->dev) {
- /* shutdown our urbs */
- usb_kill_urb(port->write_urb);
- usb_kill_urb(port->read_urb);
- usb_kill_urb(port->interrupt_in_urb);
- }
+ mct_u232_set_modem_ctrl(port, control_state);
+}
+
+static void mct_u232_close(struct usb_serial_port *port)
+{
+ struct mct_u232_private *priv = usb_get_serial_port_data(port);
+
+ usb_kill_urb(priv->read_urb);
+ usb_kill_urb(port->interrupt_in_urb);
+
+ usb_serial_generic_close(port);
} /* mct_u232_close */
-static void mct_u232_read_int_callback (struct urb *urb)
+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 retval;
int status = urb->status;
@@ -534,50 +515,43 @@ static void mct_u232_read_int_callback (struct urb *urb)
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
- dbg("%s - urb shutting down with status: %d",
- __FUNCTION__, status);
+ dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
+ __func__, status);
return;
default:
- dbg("%s - nonzero urb status received: %d",
- __FUNCTION__, status);
+ dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
+ __func__, status);
goto exit;
}
- if (!serial) {
- dbg("%s - bad serial pointer, exiting", __FUNCTION__);
- return;
- }
-
- dbg("%s - port %d", __FUNCTION__, port->number);
- usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
+ usb_serial_debug_data(&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;
if (urb->actual_length) {
- for (i = 0; i < urb->actual_length ; ++i) {
- tty_insert_flip_char(tty, data[i], 0);
- }
- tty_flip_buffer_push(tty);
+ tty_insert_flip_string(&port->port, data,
+ urb->actual_length);
+ tty_flip_buffer_push(&port->port);
}
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);
+ mct_u232_msr_to_state(port, &priv->control_state, priv->last_msr);
+
+ mct_u232_msr_to_icount(&port->icount, 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];
/*
@@ -586,7 +560,7 @@ static void mct_u232_read_int_callback (struct urb *urb)
* 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) {
}
@@ -599,22 +573,26 @@ static void mct_u232_read_int_callback (struct urb *urb)
/* Break Indicator */
if (priv->last_lsr & MCT_U232_LSR_BI) {
}
+ tty_kref_put(tty);
}
#endif
+ wake_up_interruptible(&port->port.delta_msr_wait);
spin_unlock_irqrestore(&priv->lock, flags);
exit:
- retval = usb_submit_urb (urb, GFP_ATOMIC);
+ retval = usb_submit_urb(urb, GFP_ATOMIC);
if (retval)
- err ("%s - usb_submit_urb failed with result %d",
- __FUNCTION__, 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 ktermios *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);
- struct ktermios *termios = port->tty->termios;
+ struct ktermios *termios = &tty->termios;
unsigned int cflag = termios->c_cflag;
unsigned int old_cflag = old_termios->c_cflag;
unsigned long flags;
@@ -634,20 +612,20 @@ static void mct_u232_set_termios (struct usb_serial_port *port,
* Premature optimization is the root of all evil.
*/
- /* reassert DTR and RTS on transition from B0 */
+ /* reassert DTR and RTS on transition from B0 */
if ((old_cflag & CBAUD) == B0) {
- dbg("%s: baud was B0", __FUNCTION__);
+ dev_dbg(&port->dev, "%s: baud was B0\n", __func__);
control_state |= TIOCM_DTR | TIOCM_RTS;
- mct_u232_set_modem_ctrl(serial, control_state);
+ mct_u232_set_modem_ctrl(port, control_state);
}
- mct_u232_set_baud_rate(serial, port, tty_get_baud_rate(port->tty));
+ 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) {
+ dev_dbg(&port->dev, "%s: baud is B0\n", __func__);
/* Drop RTS and DTR */
control_state &= ~(TIOCM_DTR | TIOCM_RTS);
- mct_u232_set_modem_ctrl(serial, control_state);
+ mct_u232_set_modem_ctrl(port, control_state);
}
/*
@@ -672,7 +650,8 @@ static void mct_u232_set_termios (struct usb_serial_port *port,
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;
}
@@ -683,7 +662,7 @@ static void mct_u232_set_termios (struct usb_serial_port *port,
last_lcr |= (cflag & CSTOPB) ?
MCT_U232_STOP_BITS_2 : MCT_U232_STOP_BITS_1;
- mct_u232_set_line_ctrl(serial, last_lcr);
+ mct_u232_set_line_ctrl(port, last_lcr);
/* save off the modified port settings */
spin_lock_irqsave(&priv->lock, flags);
@@ -692,33 +671,30 @@ static void mct_u232_set_termios (struct usb_serial_port *port,
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 *serial = port->serial;
+ struct usb_serial_port *port = tty->driver_data;
struct mct_u232_private *priv = usb_get_serial_port_data(port);
unsigned char lcr;
unsigned long flags;
- dbg("%sstate=%d", __FUNCTION__, 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_set_line_ctrl(port, 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 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__);
spin_lock_irqsave(&priv->lock, flags);
control_state = priv->control_state;
@@ -727,15 +703,13 @@ static int mct_u232_tiocmget (struct usb_serial_port *port, struct file *file)
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,
unsigned int set, unsigned int clear)
{
- struct usb_serial *serial = port->serial;
+ 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__);
spin_lock_irqsave(&priv->lock, flags);
control_state = priv->control_state;
@@ -751,110 +725,47 @@ static int mct_u232_tiocmset (struct usb_serial_port *port, struct file *file,
priv->control_state = control_state;
spin_unlock_irqrestore(&priv->lock, flags);
- return mct_u232_set_modem_ctrl(serial, control_state);
+ return mct_u232_set_modem_ctrl(port, control_state);
}
-static int mct_u232_ioctl (struct usb_serial_port *port, struct file * file,
- unsigned int cmd, unsigned long 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 */
- return( 0 );
-
- case TIOCGICOUNT:
- /* return count of modemline transitions */
- /* TODO */
- return 0;
-
- default:
- dbg("%s: arg not supported - 0x%04x", __FUNCTION__,cmd);
- return(-ENOIOCTLCMD);
- break;
- }
- return 0;
-} /* mct_u232_ioctl */
-
-static void mct_u232_throttle (struct usb_serial_port *port)
+static void mct_u232_throttle(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;
- struct tty_struct *tty;
-
- tty = port->tty;
- dbg("%s - port %d", __FUNCTION__, port->number);
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irq(&priv->lock);
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);
+ priv->control_state &= ~TIOCM_RTS;
+ control_state = priv->control_state;
+ spin_unlock_irq(&priv->lock);
+ mct_u232_set_modem_ctrl(port, control_state);
} else {
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irq(&priv->lock);
}
}
-
-static void mct_u232_unthrottle (struct usb_serial_port *port)
+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;
- struct tty_struct *tty;
- dbg("%s - port %d", __FUNCTION__, port->number);
-
- tty = port->tty;
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irq(&priv->lock);
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);
+ priv->rx_flags &= ~THROTTLED;
+ priv->control_state |= TIOCM_RTS;
+ control_state = priv->control_state;
+ spin_unlock_irq(&priv->lock);
+ mct_u232_set_modem_ctrl(port, control_state);
} else {
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irq(&priv->lock);
}
}
-static int __init mct_u232_init (void)
-{
- int retval;
- retval = usb_serial_register(&mct_u232_device);
- if (retval)
- goto failed_usb_serial_register;
- retval = usb_register(&mct_u232_driver);
- if (retval)
- goto failed_usb_register;
- info(DRIVER_DESC " " DRIVER_VERSION);
- return 0;
-failed_usb_register:
- usb_serial_deregister(&mct_u232_device);
-failed_usb_serial_register:
- return retval;
-}
-
+module_usb_serial_driver(serial_drivers, id_table);
-static void __exit mct_u232_exit (void)
-{
- usb_deregister (&mct_u232_driver);
- usb_serial_deregister (&mct_u232_device);
-}
-
-
-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);
-MODULE_PARM_DESC(debug, "Debug enabled or not");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 07:07:27 +0000