summaryrefslogtreecommitdiff
path: root/drivers/usb/serial/digi_acceleport.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/usb/serial/digi_acceleport.c')
-rw-r--r--drivers/usb/serial/digi_acceleport.c460
1 files changed, 234 insertions, 226 deletions
diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c
index 04a56f300ea6..240aad1acaab 100644
--- a/drivers/usb/serial/digi_acceleport.c
+++ b/drivers/usb/serial/digi_acceleport.c
@@ -15,7 +15,7 @@
* Al Borchers (borchers@steinerpoint.com)
*
* (12/03/2001) gkh
-* switched to using port->open_count instead of private version.
+* switched to using port->port.count instead of private version.
* Removed port->active
*
* (04/08/2001) gb
@@ -229,8 +229,6 @@
* in case a wake up is lost.
* - Following Documentation/DocBook/kernel-locking.pdf no spin locks
* are held when calling copy_to/from_user or printk.
-*
-* $Id: digi_acceleport.c,v 1.80.1.2 2000/11/02 05:45:08 root Exp $
*/
#include <linux/kernel.h>
@@ -243,7 +241,7 @@
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/workqueue.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <linux/usb.h>
#include <linux/wait.h>
#include <linux/usb/serial.h>
@@ -443,22 +441,23 @@ static int digi_set_modem_signals(struct usb_serial_port *port,
unsigned int modem_signals, int interruptible);
static int digi_transmit_idle(struct usb_serial_port *port,
unsigned long timeout);
-static void digi_rx_throttle (struct usb_serial_port *port);
-static void digi_rx_unthrottle (struct usb_serial_port *port);
-static void digi_set_termios(struct usb_serial_port *port,
- struct ktermios *old_termios);
-static void digi_break_ctl(struct usb_serial_port *port, int break_state);
-static int digi_ioctl(struct usb_serial_port *port, struct file *file,
- unsigned int cmd, unsigned long arg);
-static int digi_tiocmget(struct usb_serial_port *port, struct file *file);
-static int digi_tiocmset(struct usb_serial_port *port, struct file *file,
+static void digi_rx_throttle(struct tty_struct *tty);
+static void digi_rx_unthrottle(struct tty_struct *tty);
+static void digi_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port, struct ktermios *old_termios);
+static void digi_break_ctl(struct tty_struct *tty, int break_state);
+static int digi_tiocmget(struct tty_struct *tty, struct file *file);
+static int digi_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear);
-static int digi_write(struct usb_serial_port *port, const unsigned char *buf, int count);
+static int digi_write(struct tty_struct *tty, struct usb_serial_port *port,
+ const unsigned char *buf, int count);
static void digi_write_bulk_callback(struct urb *urb);
-static int digi_write_room(struct usb_serial_port *port);
-static int digi_chars_in_buffer(struct usb_serial_port *port);
-static int digi_open(struct usb_serial_port *port, struct file *filp);
-static void digi_close(struct usb_serial_port *port, struct file *filp);
+static int digi_write_room(struct tty_struct *tty);
+static int digi_chars_in_buffer(struct tty_struct *tty);
+static int digi_open(struct tty_struct *tty, struct usb_serial_port *port,
+ struct file *filp);
+static void digi_close(struct tty_struct *tty, struct usb_serial_port *port,
+ struct file *filp);
static int digi_startup_device(struct usb_serial *serial);
static int digi_startup(struct usb_serial *serial);
static void digi_shutdown(struct usb_serial *serial);
@@ -487,7 +486,7 @@ static struct usb_device_id id_table_4 [] = {
{ } /* Terminating entry */
};
-MODULE_DEVICE_TABLE (usb, id_table_combined);
+MODULE_DEVICE_TABLE(usb, id_table_combined);
static struct usb_driver digi_driver = {
.name = "digi_acceleport",
@@ -518,7 +517,6 @@ static struct usb_serial_driver digi_acceleport_2_device = {
.chars_in_buffer = digi_chars_in_buffer,
.throttle = digi_rx_throttle,
.unthrottle = digi_rx_unthrottle,
- .ioctl = digi_ioctl,
.set_termios = digi_set_termios,
.break_ctl = digi_break_ctl,
.tiocmget = digi_tiocmget,
@@ -545,7 +543,6 @@ static struct usb_serial_driver digi_acceleport_4_device = {
.chars_in_buffer = digi_chars_in_buffer,
.throttle = digi_rx_throttle,
.unthrottle = digi_rx_unthrottle,
- .ioctl = digi_ioctl,
.set_termios = digi_set_termios,
.break_ctl = digi_break_ctl,
.tiocmget = digi_tiocmget,
@@ -558,21 +555,22 @@ static struct usb_serial_driver digi_acceleport_4_device = {
/* Functions */
/*
-* Cond Wait Interruptible Timeout Irqrestore
-*
-* Do spin_unlock_irqrestore and interruptible_sleep_on_timeout
-* so that wake ups are not lost if they occur between the unlock
-* and the sleep. In other words, spin_unlock_irqrestore and
-* interruptible_sleep_on_timeout are "atomic" with respect to
-* wake ups. This is used to implement condition variables.
-*
-* interruptible_sleep_on_timeout is deprecated and has been replaced
-* with the equivalent code.
-*/
+ * Cond Wait Interruptible Timeout Irqrestore
+ *
+ * Do spin_unlock_irqrestore and interruptible_sleep_on_timeout
+ * so that wake ups are not lost if they occur between the unlock
+ * and the sleep. In other words, spin_unlock_irqrestore and
+ * interruptible_sleep_on_timeout are "atomic" with respect to
+ * wake ups. This is used to implement condition variables.
+ *
+ * interruptible_sleep_on_timeout is deprecated and has been replaced
+ * with the equivalent code.
+ */
static long cond_wait_interruptible_timeout_irqrestore(
wait_queue_head_t *q, long timeout,
spinlock_t *lock, unsigned long flags)
+__releases(lock)
{
DEFINE_WAIT(wait);
@@ -586,15 +584,16 @@ static long cond_wait_interruptible_timeout_irqrestore(
/*
-* Digi Wakeup Write
-*
-* Wake up port, line discipline, and tty processes sleeping
-* on writes.
-*/
+ * Digi Wakeup Write
+ *
+ * Wake up port, line discipline, and tty processes sleeping
+ * on writes.
+ */
static void digi_wakeup_write_lock(struct work_struct *work)
{
- struct digi_port *priv = container_of(work, struct digi_port, dp_wakeup_work);
+ struct digi_port *priv =
+ container_of(work, struct digi_port, dp_wakeup_work);
struct usb_serial_port *port = priv->dp_port;
unsigned long flags;
@@ -605,20 +604,20 @@ static void digi_wakeup_write_lock(struct work_struct *work)
static void digi_wakeup_write(struct usb_serial_port *port)
{
- tty_wakeup(port->tty);
+ tty_wakeup(port->port.tty);
}
/*
-* Digi Write OOB Command
-*
-* Write commands on the out of band port. Commands are 4
-* bytes each, multiple commands can be sent at once, and
-* no command will be split across USB packets. Returns 0
-* if successful, -EINTR if interrupted while sleeping and
-* the interruptible flag is true, or a negative error
-* returned by usb_submit_urb.
-*/
+ * Digi Write OOB Command
+ *
+ * Write commands on the out of band port. Commands are 4
+ * bytes each, multiple commands can be sent at once, and
+ * no command will be split across USB packets. Returns 0
+ * if successful, -EINTR if interrupted while sleeping and
+ * the interruptible flag is true, or a negative error
+ * returned by usb_submit_urb.
+ */
static int digi_write_oob_command(struct usb_serial_port *port,
unsigned char *buf, int count, int interruptible)
@@ -633,8 +632,8 @@ static int digi_write_oob_command(struct usb_serial_port *port,
dbg("digi_write_oob_command: TOP: port=%d, count=%d", oob_priv->dp_port_num, count);
spin_lock_irqsave(&oob_priv->dp_port_lock, flags);
- while(count > 0) {
- while(oob_port->write_urb->status == -EINPROGRESS
+ while (count > 0) {
+ while (oob_port->write_urb->status == -EINPROGRESS
|| oob_priv->dp_write_urb_in_use) {
cond_wait_interruptible_timeout_irqrestore(
&oob_port->write_wait, DIGI_RETRY_TIMEOUT,
@@ -651,7 +650,8 @@ static int digi_write_oob_command(struct usb_serial_port *port,
memcpy(oob_port->write_urb->transfer_buffer, buf, len);
oob_port->write_urb->transfer_buffer_length = len;
oob_port->write_urb->dev = port->serial->dev;
- if ((ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC)) == 0) {
+ ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC);
+ if (ret == 0) {
oob_priv->dp_write_urb_in_use = 1;
count -= len;
buf += len;
@@ -666,16 +666,16 @@ static int digi_write_oob_command(struct usb_serial_port *port,
/*
-* Digi Write In Band Command
-*
-* Write commands on the given port. Commands are 4
-* bytes each, multiple commands can be sent at once, and
-* no command will be split across USB packets. If timeout
-* is non-zero, write in band command will return after
-* waiting unsuccessfully for the URB status to clear for
-* timeout ticks. Returns 0 if successful, or a negative
-* error returned by digi_write.
-*/
+ * Digi Write In Band Command
+ *
+ * Write commands on the given port. Commands are 4
+ * bytes each, multiple commands can be sent at once, and
+ * no command will be split across USB packets. If timeout
+ * is non-zero, write in band command will return after
+ * waiting unsuccessfully for the URB status to clear for
+ * timeout ticks. Returns 0 if successful, or a negative
+ * error returned by digi_write.
+ */
static int digi_write_inb_command(struct usb_serial_port *port,
unsigned char *buf, int count, unsigned long timeout)
@@ -695,9 +695,10 @@ static int digi_write_inb_command(struct usb_serial_port *port,
timeout = ULONG_MAX;
spin_lock_irqsave(&priv->dp_port_lock, flags);
- while(count > 0 && ret == 0) {
- while((port->write_urb->status == -EINPROGRESS
- || priv->dp_write_urb_in_use) && time_before(jiffies, timeout)) {
+ while (count > 0 && ret == 0) {
+ while ((port->write_urb->status == -EINPROGRESS
+ || priv->dp_write_urb_in_use)
+ && time_before(jiffies, timeout)) {
cond_wait_interruptible_timeout_irqrestore(
&port->write_wait, DIGI_RETRY_TIMEOUT,
&priv->dp_port_lock, flags);
@@ -728,7 +729,8 @@ static int digi_write_inb_command(struct usb_serial_port *port,
}
port->write_urb->dev = port->serial->dev;
- if ((ret = usb_submit_urb(port->write_urb, GFP_ATOMIC)) == 0) {
+ ret = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+ if (ret == 0) {
priv->dp_write_urb_in_use = 1;
priv->dp_out_buf_len = 0;
count -= len;
@@ -746,14 +748,14 @@ static int digi_write_inb_command(struct usb_serial_port *port,
/*
-* Digi Set Modem Signals
-*
-* Sets or clears DTR and RTS on the port, according to the
-* modem_signals argument. Use TIOCM_DTR and TIOCM_RTS flags
-* for the modem_signals argument. Returns 0 if successful,
-* -EINTR if interrupted while sleeping, or a non-zero error
-* returned by usb_submit_urb.
-*/
+ * Digi Set Modem Signals
+ *
+ * Sets or clears DTR and RTS on the port, according to the
+ * modem_signals argument. Use TIOCM_DTR and TIOCM_RTS flags
+ * for the modem_signals argument. Returns 0 if successful,
+ * -EINTR if interrupted while sleeping, or a non-zero error
+ * returned by usb_submit_urb.
+ */
static int digi_set_modem_signals(struct usb_serial_port *port,
unsigned int modem_signals, int interruptible)
@@ -761,7 +763,7 @@ static int digi_set_modem_signals(struct usb_serial_port *port,
int ret;
struct digi_port *port_priv = usb_get_serial_port_data(port);
- struct usb_serial_port *oob_port = (struct usb_serial_port *)((struct digi_serial *)(usb_get_serial_data(port->serial)))->ds_oob_port;
+ struct usb_serial_port *oob_port = (struct usb_serial_port *) ((struct digi_serial *)(usb_get_serial_data(port->serial)))->ds_oob_port;
struct digi_port *oob_priv = usb_get_serial_port_data(oob_port);
unsigned char *data = oob_port->write_urb->transfer_buffer;
unsigned long flags = 0;
@@ -773,7 +775,8 @@ static int digi_set_modem_signals(struct usb_serial_port *port,
spin_lock_irqsave(&oob_priv->dp_port_lock, flags);
spin_lock(&port_priv->dp_port_lock);
- while(oob_port->write_urb->status == -EINPROGRESS || oob_priv->dp_write_urb_in_use) {
+ while (oob_port->write_urb->status == -EINPROGRESS ||
+ oob_priv->dp_write_urb_in_use) {
spin_unlock(&port_priv->dp_port_lock);
cond_wait_interruptible_timeout_irqrestore(
&oob_port->write_wait, DIGI_RETRY_TIMEOUT,
@@ -785,17 +788,20 @@ static int digi_set_modem_signals(struct usb_serial_port *port,
}
data[0] = DIGI_CMD_SET_DTR_SIGNAL;
data[1] = port_priv->dp_port_num;
- data[2] = (modem_signals&TIOCM_DTR) ? DIGI_DTR_ACTIVE : DIGI_DTR_INACTIVE;
+ data[2] = (modem_signals & TIOCM_DTR) ?
+ DIGI_DTR_ACTIVE : DIGI_DTR_INACTIVE;
data[3] = 0;
data[4] = DIGI_CMD_SET_RTS_SIGNAL;
data[5] = port_priv->dp_port_num;
- data[6] = (modem_signals&TIOCM_RTS) ? DIGI_RTS_ACTIVE : DIGI_RTS_INACTIVE;
+ data[6] = (modem_signals & TIOCM_RTS) ?
+ DIGI_RTS_ACTIVE : DIGI_RTS_INACTIVE;
data[7] = 0;
oob_port->write_urb->transfer_buffer_length = 8;
oob_port->write_urb->dev = port->serial->dev;
- if ((ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC)) == 0) {
+ ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC);
+ if (ret == 0) {
oob_priv->dp_write_urb_in_use = 1;
port_priv->dp_modem_signals =
(port_priv->dp_modem_signals&~(TIOCM_DTR|TIOCM_RTS))
@@ -809,16 +815,16 @@ static int digi_set_modem_signals(struct usb_serial_port *port,
}
/*
-* Digi Transmit Idle
-*
-* Digi transmit idle waits, up to timeout ticks, for the transmitter
-* to go idle. It returns 0 if successful or a negative error.
-*
-* There are race conditions here if more than one process is calling
-* digi_transmit_idle on the same port at the same time. However, this
-* is only called from close, and only one process can be in close on a
-* port at a time, so its ok.
-*/
+ * Digi Transmit Idle
+ *
+ * Digi transmit idle waits, up to timeout ticks, for the transmitter
+ * to go idle. It returns 0 if successful or a negative error.
+ *
+ * There are race conditions here if more than one process is calling
+ * digi_transmit_idle on the same port at the same time. However, this
+ * is only called from close, and only one process can be in close on a
+ * port at a time, so its ok.
+ */
static int digi_transmit_idle(struct usb_serial_port *port,
unsigned long timeout)
@@ -837,12 +843,13 @@ static int digi_transmit_idle(struct usb_serial_port *port,
timeout += jiffies;
- if ((ret = digi_write_inb_command(port, buf, 2, timeout - jiffies)) != 0)
+ ret = digi_write_inb_command(port, buf, 2, timeout - jiffies);
+ if (ret != 0)
return ret;
spin_lock_irqsave(&priv->dp_port_lock, flags);
- while(time_before(jiffies, timeout) && !priv->dp_transmit_idle) {
+ while (time_before(jiffies, timeout) && !priv->dp_transmit_idle) {
cond_wait_interruptible_timeout_irqrestore(
&priv->dp_transmit_idle_wait, DIGI_RETRY_TIMEOUT,
&priv->dp_port_lock, flags);
@@ -857,9 +864,10 @@ static int digi_transmit_idle(struct usb_serial_port *port,
}
-static void digi_rx_throttle(struct usb_serial_port *port)
+static void digi_rx_throttle(struct tty_struct *tty)
{
unsigned long flags;
+ struct usb_serial_port *port = tty->driver_data;
struct digi_port *priv = usb_get_serial_port_data(port);
@@ -873,10 +881,11 @@ static void digi_rx_throttle(struct usb_serial_port *port)
}
-static void digi_rx_unthrottle(struct usb_serial_port *port)
+static void digi_rx_unthrottle(struct tty_struct *tty)
{
int ret = 0;
unsigned long flags;
+ struct usb_serial_port *port = tty->driver_data;
struct digi_port *priv = usb_get_serial_port_data(port);
dbg("digi_rx_unthrottle: TOP: port=%d", priv->dp_port_num);
@@ -901,26 +910,25 @@ static void digi_rx_unthrottle(struct usb_serial_port *port)
}
-static void digi_set_termios(struct usb_serial_port *port,
- struct ktermios *old_termios)
+static void digi_set_termios(struct tty_struct *tty,
+ struct usb_serial_port *port, struct ktermios *old_termios)
{
-
struct digi_port *priv = usb_get_serial_port_data(port);
- struct tty_struct *tty = port->tty;
unsigned int iflag = tty->termios->c_iflag;
unsigned int cflag = tty->termios->c_cflag;
unsigned int old_iflag = old_termios->c_iflag;
unsigned int old_cflag = old_termios->c_cflag;
unsigned char buf[32];
unsigned int modem_signals;
- int arg,ret;
+ int arg, ret;
int i = 0;
speed_t baud;
dbg("digi_set_termios: TOP: port=%d, iflag=0x%x, old_iflag=0x%x, cflag=0x%x, old_cflag=0x%x", priv->dp_port_num, iflag, old_iflag, cflag, old_cflag);
/* set baud rate */
- if ((baud = tty_get_baud_rate(tty)) != tty_termios_baud_rate(old_termios)) {
+ baud = tty_get_baud_rate(tty);
+ if (baud != tty_termios_baud_rate(old_termios)) {
arg = -1;
/* reassert DTR and (maybe) RTS on transition from B0 */
@@ -934,30 +942,30 @@ static void digi_set_termios(struct usb_serial_port *port,
digi_set_modem_signals(port, modem_signals, 1);
}
switch (baud) {
- /* drop DTR and RTS on transition to B0 */
- case 0: digi_set_modem_signals(port, 0, 1); break;
- case 50: arg = DIGI_BAUD_50; break;
- case 75: arg = DIGI_BAUD_75; break;
- case 110: arg = DIGI_BAUD_110; break;
- case 150: arg = DIGI_BAUD_150; break;
- case 200: arg = DIGI_BAUD_200; break;
- case 300: arg = DIGI_BAUD_300; break;
- case 600: arg = DIGI_BAUD_600; break;
- case 1200: arg = DIGI_BAUD_1200; break;
- case 1800: arg = DIGI_BAUD_1800; break;
- case 2400: arg = DIGI_BAUD_2400; break;
- case 4800: arg = DIGI_BAUD_4800; break;
- case 9600: arg = DIGI_BAUD_9600; break;
- case 19200: arg = DIGI_BAUD_19200; break;
- case 38400: arg = DIGI_BAUD_38400; break;
- case 57600: arg = DIGI_BAUD_57600; break;
- case 115200: arg = DIGI_BAUD_115200; break;
- case 230400: arg = DIGI_BAUD_230400; break;
- case 460800: arg = DIGI_BAUD_460800; break;
- default:
- arg = DIGI_BAUD_9600;
- baud = 9600;
- break;
+ /* drop DTR and RTS on transition to B0 */
+ case 0: digi_set_modem_signals(port, 0, 1); break;
+ case 50: arg = DIGI_BAUD_50; break;
+ case 75: arg = DIGI_BAUD_75; break;
+ case 110: arg = DIGI_BAUD_110; break;
+ case 150: arg = DIGI_BAUD_150; break;
+ case 200: arg = DIGI_BAUD_200; break;
+ case 300: arg = DIGI_BAUD_300; break;
+ case 600: arg = DIGI_BAUD_600; break;
+ case 1200: arg = DIGI_BAUD_1200; break;
+ case 1800: arg = DIGI_BAUD_1800; break;
+ case 2400: arg = DIGI_BAUD_2400; break;
+ case 4800: arg = DIGI_BAUD_4800; break;
+ case 9600: arg = DIGI_BAUD_9600; break;
+ case 19200: arg = DIGI_BAUD_19200; break;
+ case 38400: arg = DIGI_BAUD_38400; break;
+ case 57600: arg = DIGI_BAUD_57600; break;
+ case 115200: arg = DIGI_BAUD_115200; break;
+ case 230400: arg = DIGI_BAUD_230400; break;
+ case 460800: arg = DIGI_BAUD_460800; break;
+ default:
+ arg = DIGI_BAUD_9600;
+ baud = 9600;
+ break;
}
if (arg != -1) {
buf[i++] = DIGI_CMD_SET_BAUD_RATE;
@@ -1083,14 +1091,16 @@ static void digi_set_termios(struct usb_serial_port *port,
buf[i++] = arg;
buf[i++] = 0;
}
- if ((ret = digi_write_oob_command(port, buf, i, 1)) != 0)
+ ret = digi_write_oob_command(port, buf, i, 1);
+ if (ret != 0)
dbg("digi_set_termios: write oob failed, ret=%d", ret);
tty_encode_baud_rate(tty, baud, baud);
}
-static void digi_break_ctl(struct usb_serial_port *port, int break_state)
+static void digi_break_ctl(struct tty_struct *tty, int break_state)
{
+ struct usb_serial_port *port = tty->driver_data;
unsigned char buf[4];
buf[0] = DIGI_CMD_BREAK_CONTROL;
@@ -1101,8 +1111,9 @@ static void digi_break_ctl(struct usb_serial_port *port, int break_state)
}
-static int digi_tiocmget(struct usb_serial_port *port, struct file *file)
+static int digi_tiocmget(struct tty_struct *tty, struct file *file)
{
+ struct usb_serial_port *port = tty->driver_data;
struct digi_port *priv = usb_get_serial_port_data(port);
unsigned int val;
unsigned long flags;
@@ -1116,9 +1127,10 @@ static int digi_tiocmget(struct usb_serial_port *port, struct file *file)
}
-static int digi_tiocmset(struct usb_serial_port *port, struct file *file,
+static int digi_tiocmset(struct tty_struct *tty, struct file *file,
unsigned int set, unsigned int clear)
{
+ struct usb_serial_port *port = tty->driver_data;
struct digi_port *priv = usb_get_serial_port_data(port);
unsigned int val;
unsigned long flags;
@@ -1132,30 +1144,11 @@ static int digi_tiocmset(struct usb_serial_port *port, struct file *file,
}
-static int digi_ioctl(struct usb_serial_port *port, struct file *file,
- unsigned int cmd, unsigned long arg)
-{
- struct digi_port *priv = usb_get_serial_port_data(port);
- dbg("digi_ioctl: TOP: port=%d, cmd=0x%x", priv->dp_port_num, cmd);
-
- 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;
- }
- return -ENOIOCTLCMD;
-
-}
-
-static int digi_write(struct usb_serial_port *port, const unsigned char *buf, int count)
+static int digi_write(struct tty_struct *tty, struct usb_serial_port *port,
+ const unsigned char *buf, int count)
{
- int ret,data_len,new_len;
+ int ret, data_len, new_len;
struct digi_port *priv = usb_get_serial_port_data(port);
unsigned char *data = port->write_urb->transfer_buffer;
unsigned long flags = 0;
@@ -1173,7 +1166,8 @@ static int digi_write(struct usb_serial_port *port, const unsigned char *buf, in
spin_lock_irqsave(&priv->dp_port_lock, flags);
/* wait for urb status clear to submit another urb */
- if (port->write_urb->status == -EINPROGRESS || priv->dp_write_urb_in_use) {
+ if (port->write_urb->status == -EINPROGRESS ||
+ priv->dp_write_urb_in_use) {
/* buffer data if count is 1 (probably put_char) if possible */
if (count == 1 && priv->dp_out_buf_len < DIGI_OUT_BUF_SIZE) {
priv->dp_out_buf[priv->dp_out_buf_len++] = *buf;
@@ -1208,7 +1202,8 @@ static int digi_write(struct usb_serial_port *port, const unsigned char *buf, in
/* copy in new data */
memcpy(data, buf, new_len);
- if ((ret = usb_submit_urb(port->write_urb, GFP_ATOMIC)) == 0) {
+ ret = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+ if (ret == 0) {
priv->dp_write_urb_in_use = 1;
ret = new_len;
priv->dp_out_buf_len = 0;
@@ -1222,7 +1217,7 @@ static int digi_write(struct usb_serial_port *port, const unsigned char *buf, in
dbg("digi_write: returning %d", ret);
return ret;
-}
+}
static void digi_write_bulk_callback(struct urb *urb)
{
@@ -1237,13 +1232,13 @@ static void digi_write_bulk_callback(struct urb *urb)
dbg("digi_write_bulk_callback: TOP, urb->status=%d", status);
/* port and serial sanity check */
- if (port == NULL || (priv=usb_get_serial_port_data(port)) == NULL) {
+ if (port == NULL || (priv = usb_get_serial_port_data(port)) == NULL) {
err("%s: port or port->private is NULL, status=%d",
__func__, status);
return;
}
serial = port->serial;
- if (serial == NULL || (serial_priv=usb_get_serial_data(serial)) == NULL) {
+ if (serial == NULL || (serial_priv = usb_get_serial_data(serial)) == NULL) {
err("%s: serial or serial->private is NULL, status=%d",
__func__, status);
return;
@@ -1262,17 +1257,19 @@ static void digi_write_bulk_callback(struct urb *urb)
/* try to send any buffered data on this port, if it is open */
spin_lock(&priv->dp_port_lock);
priv->dp_write_urb_in_use = 0;
- if (port->open_count && port->write_urb->status != -EINPROGRESS
+ if (port->port.count && port->write_urb->status != -EINPROGRESS
&& priv->dp_out_buf_len > 0) {
*((unsigned char *)(port->write_urb->transfer_buffer))
= (unsigned char)DIGI_CMD_SEND_DATA;
- *((unsigned char *)(port->write_urb->transfer_buffer)+1)
+ *((unsigned char *)(port->write_urb->transfer_buffer) + 1)
= (unsigned char)priv->dp_out_buf_len;
- port->write_urb->transfer_buffer_length = priv->dp_out_buf_len+2;
+ port->write_urb->transfer_buffer_length =
+ priv->dp_out_buf_len + 2;
port->write_urb->dev = serial->dev;
- memcpy(port->write_urb->transfer_buffer+2, priv->dp_out_buf,
+ memcpy(port->write_urb->transfer_buffer + 2, priv->dp_out_buf,
priv->dp_out_buf_len);
- if ((ret = usb_submit_urb(port->write_urb, GFP_ATOMIC)) == 0) {
+ ret = usb_submit_urb(port->write_urb, GFP_ATOMIC);
+ if (ret == 0) {
priv->dp_write_urb_in_use = 1;
priv->dp_out_buf_len = 0;
}
@@ -1289,16 +1286,17 @@ static void digi_write_bulk_callback(struct urb *urb)
__func__, ret, priv->dp_port_num);
}
-static int digi_write_room(struct usb_serial_port *port)
+static int digi_write_room(struct tty_struct *tty)
{
-
- int room;
+ struct usb_serial_port *port = tty->driver_data;
struct digi_port *priv = usb_get_serial_port_data(port);
+ int room;
unsigned long flags = 0;
spin_lock_irqsave(&priv->dp_port_lock, flags);
- if (port->write_urb->status == -EINPROGRESS || priv->dp_write_urb_in_use)
+ if (port->write_urb->status == -EINPROGRESS ||
+ priv->dp_write_urb_in_use)
room = 0;
else
room = port->bulk_out_size - 2 - priv->dp_out_buf_len;
@@ -1309,12 +1307,11 @@ static int digi_write_room(struct usb_serial_port *port)
}
-static int digi_chars_in_buffer(struct usb_serial_port *port)
+static int digi_chars_in_buffer(struct tty_struct *tty)
{
-
+ struct usb_serial_port *port = tty->driver_data;
struct digi_port *priv = usb_get_serial_port_data(port);
-
if (port->write_urb->status == -EINPROGRESS
|| priv->dp_write_urb_in_use) {
dbg("digi_chars_in_buffer: port=%d, chars=%d",
@@ -1330,7 +1327,8 @@ static int digi_chars_in_buffer(struct usb_serial_port *port)
}
-static int digi_open(struct usb_serial_port *port, struct file *filp)
+static int digi_open(struct tty_struct *tty, struct usb_serial_port *port,
+ struct file *filp)
{
int ret;
unsigned char buf[32];
@@ -1339,7 +1337,7 @@ static int digi_open(struct usb_serial_port *port, struct file *filp)
unsigned long flags = 0;
dbg("digi_open: TOP: port=%d, open_count=%d",
- priv->dp_port_num, port->open_count);
+ priv->dp_port_num, port->port.count);
/* be sure the device is started up */
if (digi_startup_device(port->serial) != 0)
@@ -1354,7 +1352,7 @@ static int digi_open(struct usb_serial_port *port, struct file *filp)
}
/* wait for a close in progress to finish */
- while(priv->dp_in_close) {
+ while (priv->dp_in_close) {
cond_wait_interruptible_timeout_irqrestore(
&priv->dp_close_wait, DIGI_RETRY_TIMEOUT,
&priv->dp_port_lock, flags);
@@ -1364,7 +1362,7 @@ static int digi_open(struct usb_serial_port *port, struct file *filp)
}
spin_unlock_irqrestore(&priv->dp_port_lock, flags);
-
+
/* read modem signals automatically whenever they change */
buf[0] = DIGI_CMD_READ_INPUT_SIGNALS;
buf[1] = priv->dp_port_num;
@@ -1377,13 +1375,16 @@ static int digi_open(struct usb_serial_port *port, struct file *filp)
buf[6] = DIGI_FLUSH_TX | DIGI_FLUSH_RX;
buf[7] = 0;
- if ((ret = digi_write_oob_command(port, buf, 8, 1)) != 0)
+ ret = digi_write_oob_command(port, buf, 8, 1);
+ if (ret != 0)
dbg("digi_open: write oob failed, ret=%d", ret);
/* set termios settings */
- not_termios.c_cflag = ~port->tty->termios->c_cflag;
- not_termios.c_iflag = ~port->tty->termios->c_iflag;
- digi_set_termios(port, &not_termios);
+ if (tty) {
+ not_termios.c_cflag = ~tty->termios->c_cflag;
+ not_termios.c_iflag = ~tty->termios->c_iflag;
+ digi_set_termios(tty, port, &not_termios);
+ }
/* set DTR and RTS */
digi_set_modem_signals(port, TIOCM_DTR|TIOCM_RTS, 1);
@@ -1392,16 +1393,16 @@ static int digi_open(struct usb_serial_port *port, struct file *filp)
}
-static void digi_close(struct usb_serial_port *port, struct file *filp)
+static void digi_close(struct tty_struct *tty, struct usb_serial_port *port,
+ struct file *filp)
{
DEFINE_WAIT(wait);
int ret;
unsigned char buf[32];
- struct tty_struct *tty = port->tty;
struct digi_port *priv = usb_get_serial_port_data(port);
dbg("digi_close: TOP: port=%d, open_count=%d",
- priv->dp_port_num, port->open_count);
+ priv->dp_port_num, port->port.count);
mutex_lock(&port->serial->disc_mutex);
/* if disconnected, just clear flags */
@@ -1426,9 +1427,8 @@ static void digi_close(struct usb_serial_port *port, struct file *filp)
if (port->serial->dev) {
/* wait for transmit idle */
- if ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) == 0) {
+ if ((filp->f_flags&(O_NDELAY|O_NONBLOCK)) == 0)
digi_transmit_idle(port, DIGI_CLOSE_TIMEOUT);
- }
/* drop DTR and RTS */
digi_set_modem_signals(port, 0, 0);
@@ -1462,11 +1462,13 @@ static void digi_close(struct usb_serial_port *port, struct file *filp)
buf[18] = DIGI_FLUSH_TX | DIGI_FLUSH_RX;
buf[19] = 0;
- if ((ret = digi_write_oob_command(port, buf, 20, 0)) != 0)
+ ret = digi_write_oob_command(port, buf, 20, 0);
+ if (ret != 0)
dbg("digi_close: write oob failed, ret=%d", ret);
/* wait for final commands on oob port to complete */
- prepare_to_wait(&priv->dp_flush_wait, &wait, TASK_INTERRUPTIBLE);
+ prepare_to_wait(&priv->dp_flush_wait, &wait,
+ TASK_INTERRUPTIBLE);
schedule_timeout(DIGI_CLOSE_TIMEOUT);
finish_wait(&priv->dp_flush_wait, &wait);
@@ -1486,15 +1488,15 @@ exit:
/*
-* Digi Startup Device
-*
-* Starts reads on all ports. Must be called AFTER startup, with
-* urbs initialized. Returns 0 if successful, non-zero error otherwise.
-*/
+ * Digi Startup Device
+ *
+ * Starts reads on all ports. Must be called AFTER startup, with
+ * urbs initialized. Returns 0 if successful, non-zero error otherwise.
+ */
static int digi_startup_device(struct usb_serial *serial)
{
- int i,ret = 0;
+ int i, ret = 0;
struct digi_serial *serial_priv = usb_get_serial_data(serial);
struct usb_serial_port *port;
@@ -1512,7 +1514,8 @@ static int digi_startup_device(struct usb_serial *serial)
for (i = 0; i < serial->type->num_ports + 1; i++) {
port = serial->port[i];
port->write_urb->dev = port->serial->dev;
- if ((ret = usb_submit_urb(port->read_urb, GFP_KERNEL)) != 0) {
+ ret = usb_submit_urb(port->read_urb, GFP_KERNEL);
+ if (ret != 0) {
err("%s: usb_submit_urb failed, ret=%d, port=%d",
__func__, ret, i);
break;
@@ -1533,7 +1536,7 @@ static int digi_startup(struct usb_serial *serial)
/* allocate the private data structures for all ports */
/* number of regular ports + 1 for the out-of-band port */
- for(i = 0; i < serial->type->num_ports + 1; i++) {
+ for (i = 0; i < serial->type->num_ports + 1; i++) {
/* allocate port private structure */
priv = kmalloc(sizeof(struct digi_port), GFP_KERNEL);
if (priv == NULL) {
@@ -1596,7 +1599,7 @@ static void digi_shutdown(struct usb_serial *serial)
/* free the private data structures for all ports */
/* number of regular ports + 1 for the out-of-band port */
- for(i = 0; i < serial->type->num_ports + 1; i++)
+ for (i = 0; i < serial->type->num_ports + 1; i++)
kfree(usb_get_serial_port_data(serial->port[i]));
kfree(usb_get_serial_data(serial));
}
@@ -1619,7 +1622,7 @@ static void digi_read_bulk_callback(struct urb *urb)
return;
}
if (port->serial == NULL ||
- (serial_priv=usb_get_serial_data(port->serial)) == NULL) {
+ (serial_priv = usb_get_serial_data(port->serial)) == NULL) {
err("%s: serial is bad or serial->private is NULL, status=%d",
__func__, status);
return;
@@ -1643,45 +1646,46 @@ static void digi_read_bulk_callback(struct urb *urb)
/* continue read */
urb->dev = port->serial->dev;
- if ((ret = usb_submit_urb(urb, GFP_ATOMIC)) != 0) {
+ ret = usb_submit_urb(urb, GFP_ATOMIC);
+ if (ret != 0) {
err("%s: failed resubmitting urb, ret=%d, port=%d",
__func__, ret, priv->dp_port_num);
}
}
-/*
-* Digi Read INB Callback
-*
-* Digi Read INB Callback handles reads on the in band ports, sending
-* the data on to the tty subsystem. When called we know port and
-* port->private are not NULL and port->serial has been validated.
-* It returns 0 if successful, 1 if successful but the port is
-* throttled, and -1 if the sanity checks failed.
-*/
+/*
+ * Digi Read INB Callback
+ *
+ * Digi Read INB Callback handles reads on the in band ports, sending
+ * the data on to the tty subsystem. When called we know port and
+ * port->private are not NULL and port->serial has been validated.
+ * It returns 0 if successful, 1 if successful but the port is
+ * throttled, and -1 if the sanity checks failed.
+ */
static int digi_read_inb_callback(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
- struct tty_struct *tty = port->tty;
+ struct tty_struct *tty = port->port.tty;
struct digi_port *priv = usb_get_serial_port_data(port);
int opcode = ((unsigned char *)urb->transfer_buffer)[0];
int len = ((unsigned char *)urb->transfer_buffer)[1];
int port_status = ((unsigned char *)urb->transfer_buffer)[2];
- unsigned char *data = ((unsigned char *)urb->transfer_buffer)+3;
- int flag,throttled;
+ unsigned char *data = ((unsigned char *)urb->transfer_buffer) + 3;
+ int flag, throttled;
int i;
int status = urb->status;
/* do not process callbacks on closed ports */
/* but do continue the read chain */
- if (port->open_count == 0)
+ if (port->port.count == 0)
return 0;
/* short/multiple packet check */
if (urb->actual_length != len + 2) {
- err("%s: INCOMPLETE OR MULTIPLE PACKET, urb->status=%d, "
+ err("%s: INCOMPLETE OR MULTIPLE PACKET, urb->status=%d, "
"port=%d, opcode=%d, len=%d, actual_length=%d, "
"status=%d", __func__, status, priv->dp_port_num,
opcode, len, urb->actual_length, port_status);
@@ -1723,8 +1727,9 @@ static int digi_read_inb_callback(struct urb *urb)
if (flag == TTY_NORMAL)
tty_insert_flip_string(tty, data, len);
else {
- for(i = 0; i < len; i++)
- tty_insert_flip_char(tty, data[i], flag);
+ for (i = 0; i < len; i++)
+ tty_insert_flip_char(tty,
+ data[i], flag);
}
tty_flip_buffer_push(tty);
}
@@ -1736,19 +1741,19 @@ static int digi_read_inb_callback(struct urb *urb)
else if (opcode != DIGI_CMD_RECEIVE_DATA)
dbg("%s: unknown opcode: %d", __func__, opcode);
- return(throttled ? 1 : 0);
+ return throttled ? 1 : 0;
}
-/*
-* Digi Read OOB Callback
-*
-* Digi Read OOB Callback handles reads on the out of band port.
-* When called we know port and port->private are not NULL and
-* the port->serial is valid. It returns 0 if successful, and
-* -1 if the sanity checks failed.
-*/
+/*
+ * Digi Read OOB Callback
+ *
+ * Digi Read OOB Callback handles reads on the out of band port.
+ * When called we know port and port->private are not NULL and
+ * the port->serial is valid. It returns 0 if successful, and
+ * -1 if the sanity checks failed.
+ */
static int digi_read_oob_callback(struct urb *urb)
{
@@ -1758,12 +1763,13 @@ static int digi_read_oob_callback(struct urb *urb)
struct digi_port *priv = usb_get_serial_port_data(port);
int opcode, line, status, val;
int i;
+ unsigned int rts;
dbg("digi_read_oob_callback: port=%d, len=%d",
priv->dp_port_num, urb->actual_length);
/* handle each oob command */
- for(i = 0; i < urb->actual_length - 3;) {
+ for (i = 0; i < urb->actual_length - 3;) {
opcode = ((unsigned char *)urb->transfer_buffer)[i++];
line = ((unsigned char *)urb->transfer_buffer)[i++];
status = ((unsigned char *)urb->transfer_buffer)[i++];
@@ -1777,27 +1783,29 @@ static int digi_read_oob_callback(struct urb *urb)
port = serial->port[line];
- if ((priv=usb_get_serial_port_data(port)) == NULL)
+ priv = usb_get_serial_port_data(port);
+ if (priv == NULL)
return -1;
+ rts = 0;
+ if (port->port.count)
+ rts = port->port.tty->termios->c_cflag & CRTSCTS;
+
if (opcode == DIGI_CMD_READ_INPUT_SIGNALS) {
spin_lock(&priv->dp_port_lock);
/* convert from digi flags to termiox flags */
if (val & DIGI_READ_INPUT_SIGNALS_CTS) {
priv->dp_modem_signals |= TIOCM_CTS;
/* port must be open to use tty struct */
- if (port->open_count
- && port->tty->termios->c_cflag & CRTSCTS) {
- port->tty->hw_stopped = 0;
+ if (rts) {
+ port->port.tty->hw_stopped = 0;
digi_wakeup_write(port);
}
} else {
priv->dp_modem_signals &= ~TIOCM_CTS;
/* port must be open to use tty struct */
- if (port->open_count
- && port->tty->termios->c_cflag & CRTSCTS) {
- port->tty->hw_stopped = 1;
- }
+ if (rts)
+ port->port.tty->hw_stopped = 1;
}
if (val & DIGI_READ_INPUT_SIGNALS_DSR)
priv->dp_modem_signals |= TIOCM_DSR;
@@ -1834,7 +1842,7 @@ static int __init digi_init(void)
if (retval)
goto failed_acceleport_2_device;
retval = usb_serial_register(&digi_acceleport_4_device);
- if (retval)
+ if (retval)
goto failed_acceleport_4_device;
retval = usb_register(&digi_driver);
if (retval)