* Defererence pointers after any paranoid checks, not before.
*
* (21/Jun/2003) Erik Nygren
- * Added support for Home Electronics Tira-1 IR tranceiver using FT232BM chip.
+ * Added support for Home Electronics Tira-1 IR transceiver using FT232BM chip.
* See <http://www.home-electro.com/tira1.htm>. Only operates properly
* at 100000 and RTS-CTS, so set custom divisor mode on startup.
* Also force the Tira-1 and USB-UIRT to only use their custom baud rates.
* Minor whitespace and comment changes.
*
* (12/Jun/2003) David Norwood
- * Added support for USB-UIRT IR tranceiver using 8U232AM chip.
+ * Added support for USB-UIRT IR transceiver using 8U232AM chip.
* See <http://home.earthlink.net/~jrhees/USBUIRT/index.htm>. Only
* operates properly at 312500, so set custom divisor mode on startup.
*
/*
* Version Information
*/
-#define DRIVER_VERSION "v1.4.1"
+#define DRIVER_VERSION "v1.4.2"
#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>, Kuba Ober <kuba@mareimbrium.org>"
#define DRIVER_DESC "USB FTDI Serial Converters Driver"
static struct usb_device_id id_table_sio [] = {
{ USB_DEVICE(FTDI_VID, FTDI_SIO_PID) },
+ { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
{ } /* Terminating entry */
};
{ USB_DEVICE_VER(FTDI_VID, PROTEGO_SPECIAL_3, 0, 0x3ff) },
{ USB_DEVICE_VER(FTDI_VID, PROTEGO_SPECIAL_4, 0, 0x3ff) },
{ USB_DEVICE_VER(FTDI_VID, FTDI_ELV_UO100_PID, 0, 0x3ff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_ELV_UM100_PID, 0, 0x3ff) },
{ USB_DEVICE_VER(FTDI_VID, INSIDE_ACCESSO, 0, 0x3ff) },
{ USB_DEVICE_VER(INTREPID_VID, INTREPID_VALUECAN_PID, 0, 0x3ff) },
{ USB_DEVICE_VER(INTREPID_VID, INTREPID_NEOVI_PID, 0, 0x3ff) },
{ USB_DEVICE_VER(FALCOM_VID, FALCOM_TWIST_PID, 0, 0x3ff) },
{ USB_DEVICE_VER(FTDI_VID, FTDI_SUUNTO_SPORTS_PID, 0, 0x3ff) },
- { USB_DEVICE_VER(FTDI_RM_VID, FTDI_RMCANVIEW_PID, 0, 0x3ff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_RM_CANVIEW_PID, 0, 0x3ff) },
{ USB_DEVICE_VER(BANDB_VID, BANDB_USOTL4_PID, 0, 0x3ff) },
{ USB_DEVICE_VER(BANDB_VID, BANDB_USTL4_PID, 0, 0x3ff) },
{ USB_DEVICE_VER(BANDB_VID, BANDB_USO9ML2_PID, 0, 0x3ff) },
{ USB_DEVICE_VER(FTDI_VID, EVER_ECO_PRO_CDS, 0, 0x3ff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_4N_GALAXY_DE_0_PID, 0, 0x3ff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID, 0, 0x3ff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID, 0, 0x3ff) },
{ } /* Terminating entry */
};
{ USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E88E_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E88F_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, FTDI_ELV_UO100_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_ELV_UM100_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, LINX_SDMUSBQSS_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, LINX_MASTERDEVEL2_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, LINX_FUTURE_0_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(INTREPID_VID, INTREPID_NEOVI_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FALCOM_VID, FALCOM_TWIST_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, FTDI_SUUNTO_SPORTS_PID, 0x400, 0xffff) },
- { USB_DEVICE_VER(FTDI_RM_VID, FTDI_RMCANVIEW_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_RM_CANVIEW_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(BANDB_VID, BANDB_USOTL4_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(BANDB_VID, BANDB_USTL4_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(BANDB_VID, BANDB_USO9ML2_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, EVER_ECO_PRO_CDS, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_4N_GALAXY_DE_0_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID, 0x400, 0xffff) },
{ } /* Terminating entry */
};
{ USB_DEVICE(FTDI_VID, PROTEGO_R2X0) },
{ USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_3) },
{ USB_DEVICE(FTDI_VID, PROTEGO_SPECIAL_4) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E808_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E809_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E80A_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E80B_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E80C_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E80D_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E80E_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E80F_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E888_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E889_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E88A_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E88B_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E88C_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E88D_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E88E_PID, 0x400, 0xffff) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_GUDEADS_E88F_PID, 0x400, 0xffff) },
{ USB_DEVICE(FTDI_VID, FTDI_ELV_UO100_PID) },
+ { USB_DEVICE(FTDI_VID, FTDI_ELV_UM100_PID) },
{ USB_DEVICE_VER(FTDI_VID, LINX_SDMUSBQSS_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, LINX_MASTERDEVEL2_PID, 0x400, 0xffff) },
{ USB_DEVICE_VER(FTDI_VID, LINX_FUTURE_0_PID, 0x400, 0xffff) },
{ USB_DEVICE(INTREPID_VID, INTREPID_NEOVI_PID) },
{ USB_DEVICE(FALCOM_VID, FALCOM_TWIST_PID) },
{ USB_DEVICE(FTDI_VID, FTDI_SUUNTO_SPORTS_PID) },
- { USB_DEVICE(FTDI_RM_VID, FTDI_RMCANVIEW_PID) },
+ { USB_DEVICE(FTDI_VID, FTDI_RM_CANVIEW_PID) },
{ USB_DEVICE(BANDB_VID, BANDB_USOTL4_PID) },
{ USB_DEVICE(BANDB_VID, BANDB_USTL4_PID) },
{ USB_DEVICE(BANDB_VID, BANDB_USO9ML2_PID) },
{ USB_DEVICE(FTDI_VID, EVER_ECO_PRO_CDS) },
+ { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_0_PID) },
+ { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_1_PID) },
+ { USB_DEVICE(FTDI_VID, FTDI_4N_GALAXY_DE_2_PID) },
+ { USB_DEVICE(MOBILITY_VID, MOBILITY_USB_SERIAL_PID) },
+ { USB_DEVICE_VER(FTDI_VID, FTDI_ACTIVE_ROBOTS_PID, 0x400, 0xffff) },
{ } /* Terminating entry */
};
.id_table = id_table_combined,
};
+static char *ftdi_chip_name[] = {
+ [SIO] = "SIO", /* the serial part of FT8U100AX */
+ [FT8U232AM] = "FT8U232AM",
+ [FT232BM] = "FT232BM",
+ [FT2232C] = "FT2232C",
+};
+
/* Constants for read urb and write urb */
#define BUFSZ 512
char prev_status, diff_status; /* Used for TIOCMIWAIT */
__u8 rx_flags; /* receive state flags (throttling) */
spinlock_t rx_lock; /* spinlock for receive state */
+ struct work_struct rx_work;
+ int rx_processed;
__u16 interface; /* FT2232C port interface (0 for FT232/245) */
static int ftdi_chars_in_buffer (struct usb_serial_port *port);
static void ftdi_write_bulk_callback (struct urb *urb, struct pt_regs *regs);
static void ftdi_read_bulk_callback (struct urb *urb, struct pt_regs *regs);
-static void ftdi_process_read (struct usb_serial_port *port);
+static void ftdi_process_read (void *param);
static void ftdi_set_termios (struct usb_serial_port *port, struct termios * old);
static int ftdi_tiocmget (struct usb_serial_port *port, struct file *file);
static int ftdi_tiocmset (struct usb_serial_port *port, struct file * file, unsigned int set, unsigned int clear);
-#define WDR_TIMEOUT (HZ * 5 ) /* default urb timeout */
+#define WDR_TIMEOUT 5000 /* default urb timeout */
/* High and low are for DTR, RTS etc etc */
#define HIGH 1
struct ftdi_private *priv = usb_get_serial_port_data(port);
__u32 div_value = 0;
int div_okay = 1;
- char *chip_name = "";
int baud;
/*
if (!baud) baud = 9600;
switch(priv->chip_type) {
case SIO: /* SIO chip */
- chip_name = "SIO";
switch(baud) {
case 300: div_value = ftdi_sio_b300; break;
case 600: div_value = ftdi_sio_b600; break;
}
break;
case FT8U232AM: /* 8U232AM chip */
- chip_name = "FT8U232AM";
if (baud <= 3000000) {
div_value = ftdi_232am_baud_to_divisor(baud);
} else {
break;
case FT232BM: /* FT232BM chip */
case FT2232C: /* FT2232C chip */
- if (priv->chip_type == FT2232C) {
- chip_name = "FT2232C";
- } else {
- chip_name = "FT232BM";
- }
if (baud <= 3000000) {
div_value = ftdi_232bm_baud_to_divisor(baud);
} else {
if (div_okay) {
dbg("%s - Baud rate set to %d (divisor 0x%lX) on chip %s",
- __FUNCTION__, baud, (unsigned long)div_value, chip_name);
+ __FUNCTION__, baud, (unsigned long)div_value,
+ ftdi_chip_name[priv->chip_type]);
}
return(div_value);
* ***************************************************************************
*/
-ssize_t show_latency_timer(struct device *dev, char *buf)
+static ssize_t show_latency_timer(struct device *dev, char *buf)
{
struct usb_serial_port *port = to_usb_serial_port(dev);
struct ftdi_private *priv = usb_get_serial_port_data(port);
}
/* Write a new value of the latency timer, in units of milliseconds. */
-ssize_t store_latency_timer(struct device *dev, const char *valbuf, size_t count)
+static ssize_t store_latency_timer(struct device *dev, const char *valbuf,
+ size_t count)
{
struct usb_serial_port *port = to_usb_serial_port(dev);
struct ftdi_private *priv = usb_get_serial_port_data(port);
/* Write an event character directly to the FTDI register. The ASCII
value is in the low 8 bits, with the enable bit in the 9th bit. */
-ssize_t store_event_char(struct device *dev, const char *valbuf, size_t count)
+static ssize_t store_event_char(struct device *dev, const char *valbuf,
+ size_t count)
{
struct usb_serial_port *port = to_usb_serial_port(dev);
struct ftdi_private *priv = usb_get_serial_port_data(port);
return count;
}
-static DEVICE_ATTR(latency_timer, S_IWUGO | S_IRUGO, show_latency_timer, store_latency_timer);
-static DEVICE_ATTR(event_char, S_IWUGO, NULL, store_event_char);
+static DEVICE_ATTR(latency_timer, S_IWUSR | S_IRUGO, show_latency_timer, store_latency_timer);
+static DEVICE_ATTR(event_char, S_IWUSR, NULL, store_event_char);
-void create_sysfs_attrs(struct usb_serial *serial)
+static void create_sysfs_attrs(struct usb_serial *serial)
{
struct ftdi_private *priv;
struct usb_device *udev;
priv = usb_get_serial_port_data(serial->port[0]);
udev = serial->dev;
- if (priv->chip_type == FT232BM) {
- dbg("sysfs attributes for FT232BM");
+ /* XXX I've no idea if the original SIO supports the event_char
+ * sysfs parameter, so I'm playing it safe. */
+ if (priv->chip_type != SIO) {
+ dbg("sysfs attributes for %s", ftdi_chip_name[priv->chip_type]);
device_create_file(&udev->dev, &dev_attr_event_char);
- device_create_file(&udev->dev, &dev_attr_latency_timer);
+ if (priv->chip_type == FT232BM || priv->chip_type == FT2232C) {
+ device_create_file(&udev->dev, &dev_attr_latency_timer);
+ }
}
}
-void remove_sysfs_attrs(struct usb_serial *serial)
+static void remove_sysfs_attrs(struct usb_serial *serial)
{
struct ftdi_private *priv;
struct usb_device *udev;
priv = usb_get_serial_port_data(serial->port[0]);
udev = serial->dev;
- if (priv->chip_type == FT232BM) {
+ /* XXX see create_sysfs_attrs */
+ if (priv->chip_type != SIO) {
device_remove_file(&udev->dev, &dev_attr_event_char);
- device_remove_file(&udev->dev, &dev_attr_latency_timer);
+ if (priv->chip_type == FT232BM || priv->chip_type == FT2232C) {
+ device_remove_file(&udev->dev, &dev_attr_latency_timer);
+ }
}
}
priv->flags = ASYNC_LOW_LATENCY;
/* Increase the size of read buffers */
- if (port->bulk_in_buffer) {
- kfree (port->bulk_in_buffer);
- }
+ kfree(port->bulk_in_buffer);
port->bulk_in_buffer = kmalloc (BUFSZ, GFP_KERNEL);
if (!port->bulk_in_buffer) {
kfree (priv);
port->read_urb->transfer_buffer_length = BUFSZ;
}
+ INIT_WORK(&priv->rx_work, ftdi_process_read, port);
+
/* Free port's existing write urb and transfer buffer. */
if (port->write_urb) {
usb_free_urb (port->write_urb);
port->write_urb = NULL;
}
- if (port->bulk_out_buffer) {
- kfree (port->bulk_out_buffer);
- port->bulk_out_buffer = NULL;
- }
+ kfree(port->bulk_out_buffer);
+ port->bulk_out_buffer = NULL;
usb_set_serial_port_data(serial->port[0], priv);
priv->chip_type = FT8U232AM;
priv->baud_base = 48000000 / 2; /* Would be / 16, but FTDI supports 0.125, 0.25 and 0.5 divisor fractions! */
+ create_sysfs_attrs(serial);
+
return (0);
} /* ftdi_8U232AM_startup */
inter = serial->interface->altsetting->desc.bInterfaceNumber;
if (inter) {
- priv->interface = INTERFACE_B;
+ priv->interface = PIT_SIOB;
}
else {
- priv->interface = INTERFACE_A;
+ priv->interface = PIT_SIOA;
}
priv->baud_base = 48000000 / 2; /* Would be / 16, but FT2232C supports multiple of 0.125 divisor fractions! */
+ create_sysfs_attrs(serial);
+
return (0);
} /* ftdi_FT2232C_startup */
spin_unlock_irqrestore(&priv->rx_lock, flags);
/* Start reading from the device */
+ priv->rx_processed = 0;
usb_fill_bulk_urb(port->read_urb, dev,
usb_rcvbulkpipe(dev, port->bulk_in_endpointAddress),
port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length,
err("Error from RTS LOW urb");
}
} /* Note change no line if hupcl is off */
+
+ /* cancel any scheduled reading */
+ cancel_delayed_work(&priv->rx_work);
+ flush_scheduled_work();
/* shutdown our bulk read */
if (port->read_urb)
return;
}
- /* If throttled, delay receive processing until unthrottled. */
- spin_lock(&priv->rx_lock);
- if (priv->rx_flags & THROTTLED) {
- dbg("Deferring read urb processing until unthrottled");
- priv->rx_flags |= ACTUALLY_THROTTLED;
- spin_unlock(&priv->rx_lock);
- return;
- }
- spin_unlock(&priv->rx_lock);
-
ftdi_process_read(port);
} /* ftdi_read_bulk_callback */
-static void ftdi_process_read (struct usb_serial_port *port)
+static void ftdi_process_read (void *param)
{ /* ftdi_process_read */
+ struct usb_serial_port *port = (struct usb_serial_port*)param;
struct urb *urb;
struct tty_struct *tty;
struct ftdi_private *priv;
int result;
int need_flip;
int packet_offset;
+ unsigned long flags;
dbg("%s - port %d", __FUNCTION__, port->number);
data = urb->transfer_buffer;
- /* The first two bytes of every read packet are status */
- if (urb->actual_length > 2) {
- usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
+ if (priv->rx_processed) {
+ dbg("%s - already processed: %d bytes, %d remain", __FUNCTION__,
+ priv->rx_processed,
+ urb->actual_length - priv->rx_processed);
} else {
- dbg("Status only: %03oo %03oo",data[0],data[1]);
- }
+ /* The first two bytes of every read packet are status */
+ if (urb->actual_length > 2) {
+ usb_serial_debug_data(debug, &port->dev, __FUNCTION__, urb->actual_length, data);
+ } else {
+ dbg("Status only: %03oo %03oo",data[0],data[1]);
+ }
+ }
/* TO DO -- check for hung up line and handle appropriately: */
/* if CD is dropped and the line is not CLOCAL then we should hangup */
need_flip = 0;
- for (packet_offset=0; packet_offset < urb->actual_length; packet_offset += PKTSZ) {
+ for (packet_offset = priv->rx_processed; packet_offset < urb->actual_length; packet_offset += PKTSZ) {
+ int length;
+
/* Compare new line status to the old one, signal if different */
+ /* N.B. packet may be processed more than once, but differences
+ * are only processed once. */
if (priv != NULL) {
char new_status = data[packet_offset+0] & FTDI_STATUS_B0_MASK;
if (new_status != priv->prev_status) {
}
}
+ length = min(PKTSZ, urb->actual_length-packet_offset)-2;
+ if (length < 0) {
+ err("%s - bad packet length: %d", __FUNCTION__, length+2);
+ length = 0;
+ }
+
+ /* have to make sure we don't overflow the buffer
+ with tty_insert_flip_char's */
+ if (tty->flip.count+length > TTY_FLIPBUF_SIZE) {
+ tty_flip_buffer_push(tty);
+ need_flip = 0;
+
+ if (tty->flip.count != 0) {
+ /* flip didn't work, this happens when ftdi_process_read() is
+ * called from ftdi_unthrottle, because TTY_DONT_FLIP is set */
+ dbg("%s - flip buffer push failed", __FUNCTION__);
+ break;
+ }
+ }
+ if (priv->rx_flags & THROTTLED) {
+ dbg("%s - throttled", __FUNCTION__);
+ break;
+ }
+ if (tty->ldisc.receive_room(tty)-tty->flip.count < length) {
+ /* break out & wait for throttling/unthrottling to happen */
+ dbg("%s - receive room low", __FUNCTION__);
+ break;
+ }
+
/* Handle errors and break */
error_flag = TTY_NORMAL;
/* Although the device uses a bitmask and hence can have multiple */
error_flag = TTY_FRAME;
dbg("FRAMING error");
}
- if (urb->actual_length > packet_offset + 2) {
- for (i = 2; (i < PKTSZ) && ((i+packet_offset) < urb->actual_length); ++i) {
- /* have to make sure we don't overflow the buffer
- with tty_insert_flip_char's */
- if(tty->flip.count >= TTY_FLIPBUF_SIZE) {
- tty_flip_buffer_push(tty);
- }
+ if (length > 0) {
+ for (i = 2; i < length+2; i++) {
/* Note that the error flag is duplicated for
every character received since we don't know
which character it applied to */
tty_flip_buffer_push(tty);
}
+ if (packet_offset < urb->actual_length) {
+ /* not completely processed - record progress */
+ priv->rx_processed = packet_offset;
+ dbg("%s - incomplete, %d bytes processed, %d remain",
+ __FUNCTION__, packet_offset,
+ urb->actual_length - packet_offset);
+ /* check if we were throttled while processing */
+ spin_lock_irqsave(&priv->rx_lock, flags);
+ if (priv->rx_flags & THROTTLED) {
+ priv->rx_flags |= ACTUALLY_THROTTLED;
+ spin_unlock_irqrestore(&priv->rx_lock, flags);
+ dbg("%s - deferring remainder until unthrottled",
+ __FUNCTION__);
+ return;
+ }
+ spin_unlock_irqrestore(&priv->rx_lock, flags);
+ /* if the port is closed stop trying to read */
+ if (port->open_count > 0){
+ /* delay processing of remainder */
+ schedule_delayed_work(&priv->rx_work, 1);
+ } else {
+ dbg("%s - port is closed", __FUNCTION__);
+ }
+ return;
+ }
+
+ /* urb is completely processed */
+ priv->rx_processed = 0;
+
/* if the port is closed stop trying to read */
if (port->open_count > 0){
/* Continue trying to always read */
spin_unlock_irqrestore(&priv->rx_lock, flags);
if (actually_throttled)
- ftdi_process_read(port);
+ schedule_work(&priv->rx_work);
}
static int __init ftdi_init (void)
git://git.onelab.eu / linux-2.6.git / blobdiff