patch-2.2.19 linux/drivers/usb/serial/ftdi_sio.c
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- Lines: 933
- Date:
Sun Mar 25 11:37:37 2001
- Orig file:
v2.2.18/drivers/usb/serial/ftdi_sio.c
- Orig date:
Sun Mar 25 11:28:32 2001
diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.18/drivers/usb/serial/ftdi_sio.c linux/drivers/usb/serial/ftdi_sio.c
@@ -12,6 +12,28 @@
*
* See Documentation/usb/usb-serial.txt for more information on using this driver
*
+ * See http://reality.sgi.com/bryder_wellington/ftdi_sio for upto date testing info
+ * and extra documentation
+ *
+ * (12/3/2000) Bill Ryder
+ * Added support for 8U232AM device.
+ * Moved PID and VIDs into header file only.
+ * Turned on low-latency for the tty (device will do high baudrates)
+ * Added shutdown routine to close files when device removed.
+ * More debug and error message cleanups.
+ *
+ *
+ * (11/13/2000) Bill Ryder
+ * Added spinlock protected open code and close code.
+ * Multiple opens work (sort of - see webpage mentioned above).
+ * Cleaned up comments. Removed multiple PID/VID definitions.
+ * Factorised cts/dtr code
+ * Made use of __FUNCTION__ in dbg's
+ *
+ * (10/05/2000) gkh
+ * Fixed bug with urb->dev not being set properly, now that the usb
+ * core needs it.
+ *
* (09/11/2000) gkh
* Removed DEBUG #ifdefs with call to usb_serial_debug_data
*
@@ -20,11 +42,11 @@
* driver is a loadable module now.
*
* (04/04/2000) Bill Ryder
- * Fixed bugs in TCGET/TCSET ioctls (by removing them - they are
- * handled elsewhere in the serial driver chain).
+ * Fixed bugs in TCGET/TCSET ioctls (by removing them - they are
+ * handled elsewhere in the tty io driver chain).
*
* (03/30/2000) Bill Ryder
- * Implemented lots of ioctls
+ * Implemented lots of ioctls
* Fixed a race condition in write
* Changed some dbg's to errs
*
@@ -36,6 +58,7 @@
/* Bill Ryder - bryder@sgi.com - wrote the FTDI_SIO implementation */
/* Thanx to FTDI for so kindly providing details of the protocol required */
/* to talk to the device */
+/* Thanx to gkh and the rest of the usb dev group for all code I have assimilated :-) */
#include <linux/config.h>
@@ -64,11 +87,19 @@
#include "ftdi_sio.h"
-#define FTDI_VENDOR_ID 0x0403
-#define FTDI_SIO_SERIAL_CONVERTER_ID 0x8372
+
+
+struct ftdi_private {
+ ftdi_type_t ftdi_type;
+ char last_status_byte; /* device sends this every 40ms when open */
+
+
+};
/* function prototypes for a FTDI serial converter */
static int ftdi_sio_startup (struct usb_serial *serial);
+static int ftdi_8U232AM_startup (struct usb_serial *serial);
+static void ftdi_sio_shutdown (struct usb_serial *serial);
static int ftdi_sio_open (struct usb_serial_port *port, struct file *filp);
static void ftdi_sio_close (struct usb_serial_port *port, struct file *filp);
static int ftdi_sio_write (struct usb_serial_port *port, int from_user, const unsigned char *buf, int count);
@@ -78,8 +109,9 @@
static int ftdi_sio_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg);
/* All of the device info needed for the FTDI SIO serial converter */
-static __u16 ftdi_vendor_id = FTDI_VENDOR_ID;
-static __u16 ftdi_sio_product_id = FTDI_SIO_SERIAL_CONVERTER_ID;
+static __u16 ftdi_vendor_id = FTDI_VID;
+static __u16 ftdi_sio_product_id = FTDI_SIO_PID;
+static __u16 ftdi_8U232AM_product_id = FTDI_8U232AM_PID;
struct usb_serial_device_type ftdi_sio_device = {
name: "FTDI SIO",
idVendor: &ftdi_vendor_id, /* the FTDI vendor ID */
@@ -99,6 +131,29 @@
ioctl: ftdi_sio_ioctl,
set_termios: ftdi_sio_set_termios,
startup: ftdi_sio_startup,
+ shutdown: ftdi_sio_shutdown,
+};
+
+struct usb_serial_device_type ftdi_8U232AM_device = {
+ name: "FTDI 8U232AM",
+ idVendor: &ftdi_vendor_id, /* the FTDI vendor ID */
+ idProduct: &ftdi_8U232AM_product_id,
+ needs_interrupt_in: DONT_CARE,
+ needs_bulk_in: MUST_HAVE,
+ needs_bulk_out: MUST_HAVE,
+ num_interrupt_in: 0,
+ num_bulk_in: 1,
+ num_bulk_out: 1,
+ num_ports: 1,
+ open: ftdi_sio_open,
+ close: ftdi_sio_close,
+ write: ftdi_sio_write,
+ read_bulk_callback: ftdi_sio_read_bulk_callback,
+ write_bulk_callback: ftdi_sio_write_bulk_callback,
+ ioctl: ftdi_sio_ioctl,
+ set_termios: ftdi_sio_set_termios,
+ startup: ftdi_8U232AM_startup,
+ shutdown: ftdi_sio_shutdown,
};
@@ -106,119 +161,151 @@
* ***************************************************************************
* FTDI SIO Serial Converter specific driver functions
* ***************************************************************************
- *
- * Bill Ryder bryder@sgi.com of Silicon Graphics, Inc. did the FTDI_SIO code
- * Thanx to FTDI for so kindly providing details of the protocol required
- * to talk to the device - http://www.ftdi.co.uk
- *
- * Tested as at this version - other stuff might work
- * 23 March 2000
- * Works:
- * Baudrates - 9600, 38400,19200, 57600, 115200
- * TIOCMBIC - TIOCM_DTR / TIOCM_RTS
- * TIOCMBIS - TIOCM_DTR / TIOCM_RTS
- * TIOCMSET - DTR on/RTSon / DTR off, RTS off
- * no parity:CS8 even parity:CS7 odd parity:CS7
- * CRTSCTS flow control
- *
- * Pilot-xfer zillions of times
- *
- * cu works with dir option
- *
- * Not Tested (ie might not work):
- * xon/xoff flow control
- * ppp (modem handling in general)
- *
- * KNOWN BUGS:
- * Multiple Opens
- * ==============
- * Seems to have problem when opening an already open port,
- * Get I/O error on first attempt, then it lets you in.
- * Need to do proper usage counting - keep registered callbacks for first opener.
- *
- * Reproduce with:
- * cu -l /dev/ttyUSB0 dir
- * whilst cu is running do:
- * stty -a < /dev/ttyUSB0
- *
- * from stty get: 'bash: /dev/ttyUSB0: Invalid argument '
- * from cu get
- * write: Invalid argument
- *
- * Initialisation Problem
- * ======================
- * Pilot transfer required me to run the serial_loopback program before it would work.
- * Still working on this. See the webpage http://reality.sgi.com/bryder_wellington/ftdi_sio
- *
*/
#define WDR_TIMEOUT (HZ * 5 ) /* default urb timeout */
-/* do some startup allocations not currently performed by usb_serial_probe() */
+/* utility functions to set and unset dtr and rts */
+#define HIGH 1
+#define LOW 0
+static int set_rts(struct usb_device *dev,
+ unsigned int pipe,
+ int high_or_low)
+{
+ static char buf[1];
+ unsigned ftdi_high_or_low = (high_or_low? FTDI_SIO_SET_RTS_HIGH :
+ FTDI_SIO_SET_RTS_LOW);
+ return(usb_control_msg(dev, pipe,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ ftdi_high_or_low, 0,
+ buf, 0, WDR_TIMEOUT));
+}
+static int set_dtr(struct usb_device *dev,
+ unsigned int pipe,
+ int high_or_low)
+{
+ static char buf[1];
+ unsigned ftdi_high_or_low = (high_or_low? FTDI_SIO_SET_DTR_HIGH :
+ FTDI_SIO_SET_DTR_LOW);
+ return(usb_control_msg(dev, pipe,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST,
+ FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
+ ftdi_high_or_low, 0,
+ buf, 0, WDR_TIMEOUT));
+}
+
+
+
static int ftdi_sio_startup (struct usb_serial *serial)
{
+ struct ftdi_private *priv;
+
init_waitqueue_head(&serial->port[0].write_wait);
+ priv = serial->port->private = kmalloc(sizeof(struct ftdi_private), GFP_KERNEL);
+ if (!priv){
+ err(__FUNCTION__"- kmalloc(%d) failed.", sizeof(struct ftdi_private));
+ return -ENOMEM;
+ }
+
+ priv->ftdi_type = sio;
+
+ return (0);
+}
+
+
+static int ftdi_8U232AM_startup (struct usb_serial *serial)
+{
+ struct ftdi_private *priv;
+
+ init_waitqueue_head(&serial->port[0].write_wait);
+
+ priv = serial->port->private = kmalloc(sizeof(struct ftdi_private), GFP_KERNEL);
+ if (!priv){
+ err(__FUNCTION__"- kmalloc(%d) failed.", sizeof(struct ftdi_private));
+ return -ENOMEM;
+ }
+
+ priv->ftdi_type = F8U232AM;
+
return (0);
}
+static void ftdi_sio_shutdown (struct usb_serial *serial)
+{
+
+ dbg (__FUNCTION__);
+
+ /* Close ports if they are open */
+ while (serial->port[0].open_count > 0) {
+ ftdi_sio_close (&serial->port[0], NULL);
+ }
+ if (serial->port->private){
+ kfree(serial->port->private);
+ serial->port->private = NULL;
+ }
+}
+
+
+
static int ftdi_sio_open (struct usb_serial_port *port, struct file *filp)
{ /* ftdi_sio_open */
struct termios tmp_termios;
struct usb_serial *serial = port->serial;
+ unsigned long flags; /* Used for spinlock */
+ int result;
char buf[1]; /* Needed for the usb_control_msg I think */
- dbg("ftdi_sio_open port %d", port->number);
-
- /* FIXME - multiple concurrent opens cause trouble */
- if (port->active) {
- err ("port already open");
- return -EINVAL;
- }
- port->active = 1; /* FIXME - For multiple open this should increment */
-
- /* See ftdi_sio.h for description of what is reset */
- usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
- FTDI_SIO_RESET_SIO,
- 0, buf, 0, WDR_TIMEOUT);
-
- /* Setup termios */
- port->tty->termios->c_cflag =
- B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ dbg(__FUNCTION__);
+ spin_lock_irqsave (&port->port_lock, flags);
- ftdi_sio_set_termios(port, &tmp_termios);
+ MOD_INC_USE_COUNT;
+ ++port->open_count;
- /* Disable flow control */
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_FLOW_CTRL_REQUEST,
- FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
- 0, 0,
- buf, 0, WDR_TIMEOUT) < 0) {
- err("error from flowcontrol urb");
- return(-EINVAL);
- }
-
- /* Turn on RTS and DTR since we are not flow controlling*/
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- (unsigned)FTDI_SIO_SET_DTR_HIGH, 0,
- buf, 0, WDR_TIMEOUT) < 0) {
- err("Error from DTR HIGH urb");
+ if (!port->active){
+ port->active = 1;
+
+ spin_unlock_irqrestore (&port->port_lock, flags);
+
+ /* do not allow a task to be queued to deliver received data */
+ port->tty->low_latency = 1;
+
+ /* No error checking for this (will get errors later anyway) */
+ /* See ftdi_sio.h for description of what is reset */
+ usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE,
+ FTDI_SIO_RESET_SIO,
+ 0, buf, 0, WDR_TIMEOUT);
+
+ /* Setup termios defaults. According to tty_io.c the
+ settings are driver specific */
+ port->tty->termios->c_cflag =
+ B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+
+ /* ftdi_sio_set_termios will send usb control messages */
+ ftdi_sio_set_termios(port, &tmp_termios);
+
+ /* Turn on RTS and DTR since we are not flow controlling by default */
+ if (set_dtr(serial->dev, usb_sndctrlpipe(serial->dev, 0),HIGH) < 0) {
+ err(__FUNCTION__ " Error from DTR HIGH urb");
+ }
+ if (set_rts(serial->dev, usb_sndctrlpipe(serial->dev, 0),HIGH) < 0){
+ err(__FUNCTION__ " Error from RTS HIGH urb");
+ }
+
+ /* Start reading from the device */
+ FILL_BULK_URB(port->read_urb, serial->dev,
+ usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
+ port->read_urb->transfer_buffer, port->read_urb->transfer_buffer_length,
+ ftdi_sio_read_bulk_callback, port);
+ result = usb_submit_urb(port->read_urb);
+ if (result)
+ err(__FUNCTION__ " - failed submitting read urb, error %d", result);
+ } else { /* the port was already active - so no initialisation is done */
+ spin_unlock_irqrestore (&port->port_lock, flags);
}
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- (unsigned)FTDI_SIO_SET_RTS_HIGH, 0,
- buf, 0, WDR_TIMEOUT) < 0) {
- err("Error from RTS HIGH urb");
- }
-
- /*Start reading from the device*/
- if (usb_submit_urb(port->read_urb))
- err("usb_submit_urb(read bulk) failed");
return (0);
} /* ftdi_sio_open */
@@ -229,41 +316,52 @@
struct usb_serial *serial = port->serial;
unsigned int c_cflag = port->tty->termios->c_cflag;
char buf[1];
+ unsigned long flags;
- dbg("ftdi_sio_close port %d", port->number);
-
- if (c_cflag & HUPCL){
- /* Disable flow control */
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_FLOW_CTRL_REQUEST,
- FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
- 0, 0,
- buf, 0, WDR_TIMEOUT) < 0) {
- err("error from flowcontrol urb");
- }
+ dbg( __FUNCTION__);
- /* drop DTR */
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- (unsigned)FTDI_SIO_SET_DTR_LOW, 0,
- buf, 0, WDR_TIMEOUT) < 0) {
- err("Error from DTR LOW urb");
+ spin_lock_irqsave (&port->port_lock, flags);
+ --port->open_count;
+
+ if (port->open_count <= 0) {
+ spin_unlock_irqrestore (&port->port_lock, flags);
+ if (c_cflag & HUPCL){
+ /* Disable flow control */
+ if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
+ FTDI_SIO_SET_FLOW_CTRL_REQUEST,
+ FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
+ 0, 0,
+ buf, 0, WDR_TIMEOUT) < 0) {
+ err("error from flowcontrol urb");
+ }
+
+ /* drop DTR */
+ if (set_dtr(serial->dev, usb_sndctrlpipe(serial->dev, 0), LOW) < 0){
+ err("Error from DTR LOW urb");
+ }
+ /* drop RTS */
+ if (set_rts(serial->dev, usb_sndctrlpipe(serial->dev, 0),LOW) < 0) {
+ err("Error from RTS LOW urb");
+ }
+ } /* Note change no line is hupcl is off */
+
+ /* shutdown our bulk reads and writes */
+ usb_unlink_urb (port->write_urb);
+ usb_unlink_urb (port->read_urb);
+ port->active = 0;
+ port->open_count = 0;
+ } else {
+ spin_unlock_irqrestore (&port->port_lock, flags);
+
+ /* Send a HUP if necessary */
+ if (!(port->tty->termios->c_cflag & CLOCAL)){
+ tty_hangup(port->tty);
}
- /* drop RTS */
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- (unsigned)FTDI_SIO_SET_RTS_LOW, 0,
- buf, 0, WDR_TIMEOUT) < 0) {
- err("Error from RTS LOW urb");
- }
+
}
- /* shutdown our bulk reads and writes */
- usb_unlink_urb (port->write_urb);
- usb_unlink_urb (port->read_urb);
- port->active = 0;
+ MOD_DEC_USE_COUNT;
+
} /* ftdi_sio_close */
@@ -277,32 +375,37 @@
const unsigned char *buf, int count)
{ /* ftdi_sio_write */
struct usb_serial *serial = port->serial;
- const int data_offset = 1;
+ struct ftdi_private *priv = (struct ftdi_private *)port->private;
+ int data_offset ;
int rc;
+ int result;
DECLARE_WAITQUEUE(wait, current);
- dbg("ftdi_sio_serial_write port %d, %d bytes", port->number, count);
+ dbg(__FUNCTION__ " port %d, %d bytes", port->number, count);
if (count == 0) {
err("write request of 0 bytes");
return 0;
}
+
+ if (priv->ftdi_type == sio){
+ data_offset = 1;
+ } else {
+ data_offset = 0;
+ }
+ dbg("data_offset set to %d",data_offset);
/* only do something if we have a bulk out endpoint */
if (serial->num_bulk_out) {
unsigned char *first_byte = port->write_urb->transfer_buffer;
/* Was seeing a race here, got a read callback, then write callback before
- hitting interuptible_sleep_on - so wrapping in add_wait_queue stuff */
+ hitting interuptible_sleep_on - so wrapping in a wait_queue */
add_wait_queue(&port->write_wait, &wait);
set_current_state (TASK_INTERRUPTIBLE);
while (port->write_urb->status == -EINPROGRESS) {
- dbg("ftdi_sio - write in progress - retrying");
- if (0 /* file->f_flags & O_NONBLOCK */) {
- rc = -EAGAIN;
- goto err;
- }
+ dbg(__FUNCTION__ " write in progress - retrying");
if (signal_pending(current)) {
current->state = TASK_RUNNING;
remove_wait_queue(&port->write_wait, &wait);
@@ -330,20 +433,28 @@
buf, count - data_offset );
}
- /* Write the control byte at the front of the packet*/
first_byte = port->write_urb->transfer_buffer;
- *first_byte = 1 | ((count-data_offset) << 2) ;
+ if (data_offset > 0){
+ /* Write the control byte at the front of the packet*/
+ *first_byte = 1 | ((count-data_offset) << 2) ;
+ }
- dbg("Bytes: %d, Control Byte: 0o%03o",count, first_byte[0]);
+ dbg(__FUNCTION__ " Bytes: %d, First Byte: 0o%03o",count, first_byte[0]);
usb_serial_debug_data (__FILE__, __FUNCTION__, count, first_byte);
/* send the data out the bulk port */
- port->write_urb->transfer_buffer_length = count;
-
- if (usb_submit_urb(port->write_urb))
- err("usb_submit_urb(write bulk) failed");
+ FILL_BULK_URB(port->write_urb, serial->dev,
+ usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress),
+ port->write_urb->transfer_buffer, count,
+ ftdi_sio_write_bulk_callback, port);
+
+ result = usb_submit_urb(port->write_urb);
+ if (result) {
+ err(__FUNCTION__ " - failed submitting write urb, error %d", result);
+ return 0;
+ }
- dbg("write returning: %d", count - data_offset);
+ dbg(__FUNCTION__ " write returning: %d", count - data_offset);
return (count - data_offset);
}
@@ -387,14 +498,16 @@
static void ftdi_sio_read_bulk_callback (struct urb *urb)
{ /* ftdi_sio_serial_buld_callback */
struct usb_serial_port *port = (struct usb_serial_port *)urb->context;
+ struct ftdi_private *priv = (struct ftdi_private *)port->private;
struct usb_serial *serial;
struct tty_struct *tty = port->tty ;
unsigned char *data = urb->transfer_buffer;
const int data_offset = 2;
int i;
+ int result;
- dbg("ftdi_sio read callback");
+ dbg(__FUNCTION__);
if (port_paranoia_check (port, "ftdi_sio_read_bulk_callback")) {
return;
@@ -404,10 +517,6 @@
if (serial_paranoia_check (serial, "ftdi_sio_read_bulk_callback")) {
return;
}
-
- /* TO DO -- check for hung up line and handle appropriately: */
- /* send hangup (need to find out how to do this) */
-
if (urb->status) {
/* This will happen at close every time so it is a dbg not an err */
@@ -421,6 +530,14 @@
dbg("Just status");
}
+ priv->last_status_byte = data[0]; /* this has modem control lines */
+
+ /* TO DO -- check for hung up line and handle appropriately: */
+ /* send hangup */
+ /* See acm.c - you do a tty_hangup - eg tty_hangup(tty) */
+ /* if CD is dropped and the line is not CLOCAL then we should hangup */
+
+
if (urb->actual_length > data_offset) {
for (i = data_offset ; i < urb->actual_length ; ++i) {
tty_insert_flip_char(tty, data[i], 0);
@@ -429,12 +546,65 @@
}
/* Continue trying to always read */
- if (usb_submit_urb(urb))
- err("failed resubmitting read urb");
+ FILL_BULK_URB(urb, serial->dev,
+ usb_rcvbulkpipe(serial->dev, port->bulk_in_endpointAddress),
+ urb->transfer_buffer, urb->transfer_buffer_length,
+ ftdi_sio_read_bulk_callback, port);
+
+ result = usb_submit_urb(urb);
+ if (result)
+ err(__FUNCTION__ " - failed resubmitting read urb, error %d", result);
return;
} /* ftdi_sio_serial_read_bulk_callback */
+
+__u16 translate_baudrate_to_ftdi(unsigned int cflag, ftdi_type_t ftdi_type)
+{ /* translate_baudrate_to_ftdi */
+
+ __u16 urb_value = ftdi_sio_b9600;
+
+ if (ftdi_type == sio){
+ switch(cflag & CBAUD){
+ case B0: break; /* ignored by this */
+ case B300: urb_value = ftdi_sio_b300; dbg("Set to 300"); break;
+ case B600: urb_value = ftdi_sio_b600; dbg("Set to 600") ; break;
+ case B1200: urb_value = ftdi_sio_b1200; dbg("Set to 1200") ; break;
+ case B2400: urb_value = ftdi_sio_b2400; dbg("Set to 2400") ; break;
+ case B4800: urb_value = ftdi_sio_b4800; dbg("Set to 4800") ; break;
+ case B9600: urb_value = ftdi_sio_b9600; dbg("Set to 9600") ; break;
+ case B19200: urb_value = ftdi_sio_b19200; dbg("Set to 19200") ; break;
+ case B38400: urb_value = ftdi_sio_b38400; dbg("Set to 38400") ; break;
+ case B57600: urb_value = ftdi_sio_b57600; dbg("Set to 57600") ; break;
+ case B115200: urb_value = ftdi_sio_b115200; dbg("Set to 115200") ; break;
+ default: dbg(__FUNCTION__ " FTDI_SIO does not support the baudrate (%d) requested",
+ (cflag & CBAUD));
+ break;
+ }
+ } else { /* it is 8U232AM */
+ switch(cflag & CBAUD){
+ case B0: break; /* ignored by this */
+ case B300: urb_value = ftdi_8U232AM_48MHz_b300; dbg("Set to 300"); break;
+ case B600: urb_value = ftdi_8U232AM_48MHz_b600; dbg("Set to 600") ; break;
+ case B1200: urb_value = ftdi_8U232AM_48MHz_b1200; dbg("Set to 1200") ; break;
+ case B2400: urb_value = ftdi_8U232AM_48MHz_b2400; dbg("Set to 2400") ; break;
+ case B4800: urb_value = ftdi_8U232AM_48MHz_b4800; dbg("Set to 4800") ; break;
+ case B9600: urb_value = ftdi_8U232AM_48MHz_b9600; dbg("Set to 9600") ; break;
+ case B19200: urb_value = ftdi_8U232AM_48MHz_b19200; dbg("Set to 19200") ; break;
+ case B38400: urb_value = ftdi_8U232AM_48MHz_b38400; dbg("Set to 38400") ; break;
+ case B57600: urb_value = ftdi_8U232AM_48MHz_b57600; dbg("Set to 57600") ; break;
+ case B115200: urb_value = ftdi_8U232AM_48MHz_b115200; dbg("Set to 115200") ; break;
+ case B230400: urb_value = ftdi_8U232AM_48MHz_b230400; dbg("Set to 230400") ; break;
+ case B460800: urb_value = ftdi_8U232AM_48MHz_b460800; dbg("Set to 460800") ; break;
+ case B921600: urb_value = ftdi_8U232AM_48MHz_b921600; dbg("Set to 921600") ; break;
+ default: dbg(__FUNCTION__ " The baudrate (%d) requested is not implemented",
+ (cflag & CBAUD));
+ break;
+ }
+ }
+ return(urb_value);
+}
+
/* As I understand this - old_termios contains the original termios settings */
/* and tty->termios contains the new setting to be used */
/* */
@@ -444,10 +614,12 @@
{ /* ftdi_sio_set_termios */
struct usb_serial *serial = port->serial;
unsigned int cflag = port->tty->termios->c_cflag;
- __u16 urb_value; /* Will hold the new flags */
+ struct ftdi_private *priv = (struct ftdi_private *)port->private;
+ __u16 urb_value; /* will hold the new flags */
char buf[1]; /* Perhaps I should dynamically alloc this? */
- dbg("ftdi_sio_set_termios port %d", port->number);
+
+ dbg(__FUNCTION__);
/* FIXME -For this cut I don't care if the line is really changing or
@@ -481,26 +653,12 @@
FTDI_SIO_SET_DATA_REQUEST_TYPE,
urb_value , 0,
buf, 0, 100) < 0) {
- err("FAILED to set databits/stopbits/parity");
+ err(__FUNCTION__ " FAILED to set databits/stopbits/parity");
}
/* Now do the baudrate */
-
- switch(cflag & CBAUD){
- case B0: break; /* Handled below */
- case B300: urb_value = ftdi_sio_b300; dbg("Set to 300"); break;
- case B600: urb_value = ftdi_sio_b600; dbg("Set to 600") ; break;
- case B1200: urb_value = ftdi_sio_b1200; dbg("Set to 1200") ; break;
- case B2400: urb_value = ftdi_sio_b2400; dbg("Set to 2400") ; break;
- case B4800: urb_value = ftdi_sio_b4800; dbg("Set to 4800") ; break;
- case B9600: urb_value = ftdi_sio_b9600; dbg("Set to 9600") ; break;
- case B19200: urb_value = ftdi_sio_b19200; dbg("Set to 19200") ; break;
- case B38400: urb_value = ftdi_sio_b38400; dbg("Set to 38400") ; break;
- case B57600: urb_value = ftdi_sio_b57600; dbg("Set to 57600") ; break;
- case B115200: urb_value = ftdi_sio_b115200; dbg("Set to 115200") ; break;
- default: dbg("FTDI_SIO does not support the baudrate requested");
- /* FIXME - how to return an error for this? */ break;
- }
+ urb_value = translate_baudrate_to_ftdi((cflag & CBAUD), priv->ftdi_type);
+
if ((cflag & CBAUD) == B0 ) {
/* Disable flow control */
if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
@@ -508,38 +666,31 @@
FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE,
0, 0,
buf, 0, WDR_TIMEOUT) < 0) {
- err("error from disable flowcontrol urb");
+ err(__FUNCTION__ " error from disable flowcontrol urb");
}
/* Drop RTS and DTR */
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- (unsigned)FTDI_SIO_SET_DTR_LOW, 0,
- buf, 0, WDR_TIMEOUT) < 0) {
- err("Error from DTR LOW urb");
+ if (set_dtr(serial->dev, usb_sndctrlpipe(serial->dev, 0),LOW) < 0){
+ err(__FUNCTION__ " Error from DTR LOW urb");
}
- if (usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- (unsigned)FTDI_SIO_SET_RTS_LOW, 0,
- buf, 0, WDR_TIMEOUT) < 0) {
- err("Error from RTS LOW urb");
+ if (set_rts(serial->dev, usb_sndctrlpipe(serial->dev, 0),LOW) < 0){
+ err(__FUNCTION__ " Error from RTS LOW urb");
}
} else {
+ /* set the baudrate determined before */
if (usb_control_msg(serial->dev,
usb_sndctrlpipe(serial->dev, 0),
FTDI_SIO_SET_BAUDRATE_REQUEST,
FTDI_SIO_SET_BAUDRATE_REQUEST_TYPE,
urb_value, 0,
buf, 0, 100) < 0) {
- err("urb failed to set baurdrate");
+ err(__FUNCTION__ " urb failed to set baurdrate");
}
}
/* Set flow control */
/* Note device also supports DTR/CD (ugh) and Xon/Xoff in hardware */
if (cflag & CRTSCTS) {
- dbg("Setting to CRTSCTS flow control");
+ dbg(__FUNCTION__ " Setting to CRTSCTS flow control");
if (usb_control_msg(serial->dev,
usb_sndctrlpipe(serial->dev, 0),
FTDI_SIO_SET_FLOW_CTRL_REQUEST,
@@ -550,9 +701,8 @@
}
} else {
- /* CHECK Assuming XON/XOFF handled by stack - not by device */
- /* Disable flow control */
- dbg("Turning off hardware flow control");
+ /* CHECKME Assuming XON/XOFF handled by tty stack - not by device */
+ dbg(__FUNCTION__ " Turning off hardware flow control");
if (usb_control_msg(serial->dev,
usb_sndctrlpipe(serial->dev, 0),
FTDI_SIO_SET_FLOW_CTRL_REQUEST,
@@ -569,26 +719,38 @@
static int ftdi_sio_ioctl (struct usb_serial_port *port, struct file * file, unsigned int cmd, unsigned long arg)
{
struct usb_serial *serial = port->serial;
+ struct ftdi_private *priv = (struct ftdi_private *)port->private;
__u16 urb_value=0; /* Will hold the new flags */
char buf[1];
int ret, mask;
- dbg("ftdi_sio_ioctl - cmd 0x%04x", cmd);
+ dbg(__FUNCTION__ " cmd 0x%04x", cmd);
/* Based on code from acm.c and others */
switch (cmd) {
case TIOCMGET:
- dbg("TIOCMGET");
- /* Request the status from the device */
- if ((ret = usb_control_msg(serial->dev,
- usb_rcvctrlpipe(serial->dev, 0),
- FTDI_SIO_GET_MODEM_STATUS_REQUEST,
- FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
- 0, 0,
- buf, 1, HZ * 5)) < 0 ) {
- dbg("Get not get modem status of device");
- return(ret);
+ dbg(__FUNCTION__ " TIOCMGET");
+ /* The MODEM_STATUS_REQUEST works for the sio but not the 232 */
+ if (priv->ftdi_type == sio){
+ /* TO DECIDE - use the 40ms status packets or not? */
+ /* PRO: No need to send urb */
+ /* CON: Could be 40ms out of date */
+
+ /* Request the status from the device */
+ if ((ret = usb_control_msg(serial->dev,
+ usb_rcvctrlpipe(serial->dev, 0),
+ FTDI_SIO_GET_MODEM_STATUS_REQUEST,
+ FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE,
+ 0, 0,
+ buf, 1, WDR_TIMEOUT)) < 0 ) {
+ err(__FUNCTION__ " Could not get modem status of device - err: %d",
+ ret);
+ return(ret);
+ }
+ } else {
+ /* This gets updated every 40ms - so just copy it in */
+ buf[0] = priv->last_status_byte;
}
return put_user((buf[0] & FTDI_SIO_DSR_MASK ? TIOCM_DSR : 0) |
@@ -599,51 +761,33 @@
break;
case TIOCMSET: /* Turns on and off the lines as specified by the mask */
- dbg("TIOCMSET");
+ dbg(__FUNCTION__ " TIOCMSET");
if ((ret = get_user(mask, (unsigned long *) arg))) return ret;
- urb_value = ((mask & TIOCM_DTR) ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW);
- if ((ret = usb_control_msg(serial->dev,
- usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- urb_value , 0,
- buf, 0, WDR_TIMEOUT)) < 0){
- err("Urb to set DTR failed");
- return(ret);
- }
- urb_value = ((mask & TIOCM_RTS) ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW);
- if ((ret = usb_control_msg(serial->dev,
- usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- urb_value , 0,
- buf, 0, WDR_TIMEOUT)) < 0){
- err("Urb to set RTS failed");
- return(ret);
- }
+ urb_value = ((mask & TIOCM_DTR) ? HIGH : LOW);
+ if (set_dtr(serial->dev, usb_sndctrlpipe(serial->dev, 0),urb_value) < 0){
+ err("Error from DTR set urb (TIOCMSET)");
+ }
+ urb_value = ((mask & TIOCM_RTS) ? HIGH : LOW);
+ if (set_rts(serial->dev, usb_sndctrlpipe(serial->dev, 0),urb_value) < 0){
+ err("Error from RTS set urb (TIOCMSET)");
+ }
break;
case TIOCMBIS: /* turns on (Sets) the lines as specified by the mask */
- dbg("TIOCMBIS");
+ dbg(__FUNCTION__ " TIOCMBIS");
if ((ret = get_user(mask, (unsigned long *) arg))) return ret;
if (mask & TIOCM_DTR){
- if ((ret = usb_control_msg(serial->dev,
- usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- FTDI_SIO_SET_DTR_HIGH , 0,
- buf, 0, WDR_TIMEOUT)) < 0){
+ if ((ret = set_dtr(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ HIGH)) < 0) {
err("Urb to set DTR failed");
return(ret);
- }
}
- if (mask & TIOCM_RTS) {
- if ((ret = usb_control_msg(serial->dev,
- usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- FTDI_SIO_SET_RTS_HIGH , 0,
- buf, 0, WDR_TIMEOUT)) < 0){
+ }
+ if (mask & TIOCM_RTS) {
+ if ((ret = set_rts(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ HIGH)) < 0){
err("Urb to set RTS failed");
return(ret);
}
@@ -651,26 +795,20 @@
break;
case TIOCMBIC: /* turns off (Clears) the lines as specified by the mask */
- dbg("TIOCMBIC");
+ dbg(__FUNCTION__ " TIOCMBIC");
if ((ret = get_user(mask, (unsigned long *) arg))) return ret;
if (mask & TIOCM_DTR){
- if ((ret = usb_control_msg(serial->dev,
- usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- FTDI_SIO_SET_DTR_LOW , 0,
- buf, 0, WDR_TIMEOUT)) < 0){
+ if ((ret = set_dtr(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ LOW)) < 0){
err("Urb to unset DTR failed");
return(ret);
}
}
if (mask & TIOCM_RTS) {
- if ((ret = usb_control_msg(serial->dev,
- usb_sndctrlpipe(serial->dev, 0),
- FTDI_SIO_SET_MODEM_CTRL_REQUEST,
- FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE,
- FTDI_SIO_SET_RTS_LOW , 0,
- buf, 0, WDR_TIMEOUT)) < 0){
+ if ((ret = set_rts(serial->dev,
+ usb_sndctrlpipe(serial->dev, 0),
+ LOW)) < 0){
err("Urb to unset RTS failed");
return(ret);
}
@@ -690,25 +828,28 @@
/* This is not an error - turns out the higher layers will do
* some ioctls itself (see comment above)
*/
- dbg("ftdi_sio ioctl arg not supported - it was 0x%04x",cmd);
+ dbg(__FUNCTION__ " arg not supported - it was 0x%04x",cmd);
return(-ENOIOCTLCMD);
break;
}
- dbg("ftdi_sio_ioctl returning 0");
return 0;
} /* ftdi_sio_ioctl */
static int __init ftdi_sio_init (void)
{
+ dbg(__FUNCTION__);
usb_serial_register (&ftdi_sio_device);
+ usb_serial_register (&ftdi_8U232AM_device);
return 0;
}
static void __exit ftdi_sio_exit (void)
{
+ dbg(__FUNCTION__);
usb_serial_deregister (&ftdi_sio_device);
+ usb_serial_deregister (&ftdi_8U232AM_device);
}
@@ -716,4 +857,4 @@
module_exit(ftdi_sio_exit);
MODULE_AUTHOR("Greg Kroah-Hartman <greg@kroah.com>, Bill Ryder <bryder@sgi.com>");
-MODULE_DESCRIPTION("USB FTDI SIO driver");
+MODULE_DESCRIPTION("USB FTDI RS232 converters driver");
FUNET's LINUX-ADM group, linux-adm@nic.funet.fi
TCL-scripts by Sam Shen (who was at: slshen@lbl.gov)