diff options
Diffstat (limited to 'drivers/usb/serial/ftdi_sio.c')
| -rw-r--r-- | drivers/usb/serial/ftdi_sio.c | 167 |
1 files changed, 130 insertions, 37 deletions
diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index 4c788c767a97..3bfcc7b9f861 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -76,7 +76,7 @@ * 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. @@ -91,7 +91,7 @@ * 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. * @@ -264,7 +264,7 @@ /* * 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" @@ -272,6 +272,7 @@ static int debug; 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 */ }; @@ -296,7 +297,6 @@ static struct usb_device_id id_table_8U232AM [] = { { USB_DEVICE_VER(FTDI_VID, FTDI_IRTRANS_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_8U232AM_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_8U232AM_ALT_PID, 0, 0x3ff) }, - { USB_DEVICE_VER(FTDI_VID, FTDI_8U232AM_ALT_ALT_PID, 0, 0x3ff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_RELAIS_PID, 0, 0x3ff) }, { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) }, { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) }, @@ -364,16 +364,20 @@ static struct usb_device_id id_table_8U232AM [] = { { 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 */ }; @@ -382,7 +386,6 @@ static struct usb_device_id id_table_FT232BM [] = { { USB_DEVICE_VER(FTDI_VID, FTDI_IRTRANS_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_8U232AM_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_8U232AM_ALT_PID, 0x400, 0xffff) }, - { USB_DEVICE_VER(FTDI_VID, FTDI_8U232AM_ALT_ALT_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_RELAIS_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_NF_RIC_VID, FTDI_NF_RIC_PID, 0x400, 0xffff) }, { USB_DEVICE_VER(FTDI_VID, FTDI_XF_632_PID, 0x400, 0xffff) }, @@ -473,6 +476,7 @@ static struct usb_device_id id_table_FT232BM [] = { { 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) }, @@ -485,11 +489,15 @@ static struct usb_device_id id_table_FT232BM [] = { { 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 */ }; @@ -517,7 +525,6 @@ static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_SIO_PID) }, { USB_DEVICE(FTDI_VID, FTDI_8U232AM_PID) }, { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_PID) }, - { USB_DEVICE(FTDI_VID, FTDI_8U232AM_ALT_ALT_PID) }, { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) }, { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) }, { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) }, @@ -596,7 +603,24 @@ static struct usb_device_id id_table_combined [] = { { 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) }, @@ -609,11 +633,16 @@ static struct usb_device_id id_table_combined [] = { { 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 */ }; @@ -658,6 +687,8 @@ struct ftdi_private { 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) */ @@ -688,7 +719,7 @@ static int ftdi_write_room (struct usb_serial_port *port); 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); @@ -1358,6 +1389,8 @@ static int ftdi_common_startup (struct usb_serial *serial) 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); @@ -1457,10 +1490,10 @@ static int ftdi_FT2232C_startup (struct usb_serial *serial) 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! */ @@ -1588,6 +1621,7 @@ static int ftdi_open (struct usb_serial_port *port, struct file *filp) 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, @@ -1638,6 +1672,10 @@ static void ftdi_close (struct usb_serial_port *port, struct file *filp) 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) @@ -1833,23 +1871,14 @@ static void ftdi_read_bulk_callback (struct urb *urb, struct pt_regs *regs) 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; @@ -1860,6 +1889,7 @@ static void ftdi_process_read (struct usb_serial_port *port) int result; int need_flip; int packet_offset; + unsigned long flags; dbg("%s - port %d", __FUNCTION__, port->number); @@ -1886,12 +1916,18 @@ static void ftdi_process_read (struct usb_serial_port *port) 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: */ @@ -1900,8 +1936,12 @@ static void ftdi_process_read (struct usb_serial_port *port) /* 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) { @@ -1911,6 +1951,35 @@ static void ftdi_process_read (struct usb_serial_port *port) } } + 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 */ @@ -1933,13 +2002,8 @@ static void ftdi_process_read (struct usb_serial_port *port) 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 */ @@ -1976,6 +2040,35 @@ static void ftdi_process_read (struct usb_serial_port *port) 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 */ @@ -2415,7 +2508,7 @@ static void ftdi_unthrottle (struct usb_serial_port *port) 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) |