Greg, This patch adds support for the FTDI FT2232C USB to dual serial port converter to the ftdi_sio driver.
The patch is based on a fork of the 2.4 ftdi_sio driver by Steven Turner of FTDI, and a preliminary port of these changes to the 2.6 ftdi_sio driver by Rus V. Brushkoff. I've tidied it up and fixed a couple of things. I don't have a FT2232C to test it with, but Steven Turner of FTDI has tested it. He mentioned a couple of known problems with the driver, but nothing to do with this patch. Please apply. Signed-off-by: Ian Abbott <[EMAIL PROTECTED]>
# This is a BitKeeper generated patch for the following project: # Project Name: Linux kernel tree # This patch format is intended for GNU patch command version 2.5 or higher. # This patch includes the following deltas: # ChangeSet 1.1803 -> 1.1804 # drivers/usb/serial/ftdi_sio.c 1.77 -> 1.78 # drivers/usb/serial/ftdi_sio.h 1.23 -> 1.24 # # The following is the BitKeeper ChangeSet Log # -------------------------------------------- # 04/07/27 [EMAIL PROTECTED] 1.1804 # Incorporated Steven Turner's code to add support for the FT2232C chip. # The prelimilary port to the 2.6 kernel was by Rus V. Brushkoff. I have # fixed a couple of things. # -------------------------------------------- # diff -Nru a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c --- a/drivers/usb/serial/ftdi_sio.c Tue Jul 27 18:12:46 2004 +++ b/drivers/usb/serial/ftdi_sio.c Tue Jul 27 18:12:46 2004 @@ -17,6 +17,11 @@ * See http://ftdi-usb-sio.sourceforge.net for upto date testing info * and extra documentation * + * (21/Jul/2004) Ian Abbott + * Incorporated Steven Turner's code to add support for the FT2232C chip. + * The prelimilary port to the 2.6 kernel was by Rus V. Brushkoff. I have + * fixed a couple of things. + * * (27/May/2004) Ian Abbott * Improved throttling code, mostly stolen from the WhiteHEAT driver. * @@ -259,7 +264,7 @@ /* * Version Information */ -#define DRIVER_VERSION "v1.4.0" +#define DRIVER_VERSION "v1.4.1" #define DRIVER_AUTHOR "Greg Kroah-Hartman <[EMAIL PROTECTED]>, Bill Ryder <[EMAIL PROTECTED]>, Kuba Ober <[EMAIL PROTECTED]>" #define DRIVER_DESC "USB FTDI Serial Converters Driver" @@ -489,11 +494,18 @@ }; +static struct usb_device_id id_table_FT2232C[] = { + { USB_DEVICE(FTDI_VID, FTDI_8U2232C_PID) }, + { } /* Terminating entry */ +}; + + static struct usb_device_id id_table_combined [] = { { USB_DEVICE(FTDI_VID, FTDI_IRTRANS_PID) }, { 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_8U2232C_PID) }, { USB_DEVICE(FTDI_VID, FTDI_RELAIS_PID) }, { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_IOBOARD_PID) }, { USB_DEVICE(INTERBIOMETRICS_VID, INTERBIOMETRICS_MINI_IOBOARD_PID) }, @@ -621,6 +633,8 @@ __u8 rx_flags; /* receive state flags (throttling) */ spinlock_t rx_lock; /* spinlock for receive state */ + __u16 interface; /* FT2232C port interface (0 for FT232/245) */ + int force_baud; /* if non-zero, force the baud rate to this value */ int force_rtscts; /* if non-zero, force RTS-CTS to always be enabled */ }; @@ -637,6 +651,7 @@ static int ftdi_SIO_startup (struct usb_serial *serial); static int ftdi_8U232AM_startup (struct usb_serial *serial); static int ftdi_FT232BM_startup (struct usb_serial *serial); +static int ftdi_FT2232C_startup (struct usb_serial *serial); static int ftdi_USB_UIRT_startup (struct usb_serial *serial); static int ftdi_HE_TIRA1_startup (struct usb_serial *serial); static void ftdi_shutdown (struct usb_serial *serial); @@ -739,6 +754,32 @@ .shutdown = ftdi_shutdown, }; +static struct usb_serial_device_type ftdi_FT2232C_device = { + .owner = THIS_MODULE, + .name = "FTDI FT2232C Compatible", + .id_table = id_table_FT2232C, + .num_interrupt_in = 0, + .num_bulk_in = 1, + .num_bulk_out = 1, + .num_ports = 1, + .open = ftdi_open, + .close = ftdi_close, + .throttle = ftdi_throttle, + .unthrottle = ftdi_unthrottle, + .write = ftdi_write, + .write_room = ftdi_write_room, + .chars_in_buffer = ftdi_chars_in_buffer, + .read_bulk_callback = ftdi_read_bulk_callback, + .write_bulk_callback = ftdi_write_bulk_callback, + .tiocmget = ftdi_tiocmget, + .tiocmset = ftdi_tiocmset, + .ioctl = ftdi_ioctl, + .set_termios = ftdi_set_termios, + .break_ctl = ftdi_break_ctl, + .attach = ftdi_FT2232C_startup, + .shutdown = ftdi_shutdown, +}; + static struct usb_serial_device_type ftdi_USB_UIRT_device = { .owner = THIS_MODULE, .name = "USB-UIRT Infrared Tranceiver", @@ -866,7 +907,7 @@ usb_sndctrlpipe(port->serial->dev, 0), FTDI_SIO_SET_MODEM_CTRL_REQUEST, FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE, - ftdi_high_or_low, 0, + ftdi_high_or_low, priv->interface, buf, 0, WDR_TIMEOUT); kfree(buf); @@ -896,7 +937,7 @@ usb_sndctrlpipe(port->serial->dev, 0), FTDI_SIO_SET_MODEM_CTRL_REQUEST, FTDI_SIO_SET_MODEM_CTRL_REQUEST_TYPE, - ftdi_high_or_low, 0, + ftdi_high_or_low, priv->interface, buf, 0, WDR_TIMEOUT); kfree(buf); @@ -909,6 +950,7 @@ static int change_speed(struct usb_serial_port *port) { + struct ftdi_private *priv = usb_get_serial_port_data(port); char *buf; __u16 urb_value; __u16 urb_index; @@ -922,6 +964,9 @@ urb_index_value = get_ftdi_divisor(port); urb_value = (__u16)urb_index_value; urb_index = (__u16)(urb_index_value >> 16); + if (priv->interface) { /* FT2232C */ + urb_index = (__u16)((urb_index << 8) | priv->interface); + } rv = usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), @@ -1015,7 +1060,12 @@ } break; case FT232BM: /* FT232BM chip */ - chip_name = "FT232BM"; + 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 { @@ -1231,6 +1281,35 @@ return (0); } /* ftdi_FT232BM_startup */ +/* Startup for the FT2232C chip */ +/* Called from usbserial:serial_probe */ +static int ftdi_FT2232C_startup (struct usb_serial *serial) +{ /* ftdi_FT2232C_startup */ + struct ftdi_private *priv; + int err; + int inter; + + dbg("%s",__FUNCTION__); + err = ftdi_common_startup(serial); + if (err){ + return (err); + } + + priv = usb_get_serial_port_data(serial->port[0]); + priv->chip_type = FT2232C; + inter = serial->interface->altsetting->desc.bInterfaceNumber; + + if(inter) { + priv->interface = INTERFACE_B; + } + else { + priv->interface = INTERFACE_A; + } + priv->baud_base = 48000000 / 2; /* Would be / 16, but FT2232C supports multiple of 0.125 divisor fractions! */ + + return (0); +} /* ftdi_FT2232C_startup */ + /* Startup for the USB-UIRT device, which requires hardwired baudrate (38400 gets mapped to 312500) */ /* Called from usbserial:serial_probe */ static int ftdi_USB_UIRT_startup (struct usb_serial *serial) @@ -1323,7 +1402,7 @@ usb_control_msg(dev, usb_sndctrlpipe(dev, 0), FTDI_SIO_RESET_REQUEST, FTDI_SIO_RESET_REQUEST_TYPE, FTDI_SIO_RESET_SIO, - 0, buf, 0, WDR_TIMEOUT); + priv->interface, buf, 0, WDR_TIMEOUT); /* Termios defaults are set by usb_serial_init. We don't change port->tty->termios - this would loose speed settings, etc. @@ -1373,6 +1452,7 @@ static void ftdi_close (struct usb_serial_port *port, struct file *filp) { /* ftdi_close */ unsigned int c_cflag = port->tty->termios->c_cflag; + struct ftdi_private *priv = usb_get_serial_port_data(port); char buf[1]; dbg("%s", __FUNCTION__); @@ -1383,7 +1463,8 @@ usb_sndctrlpipe(port->serial->dev, 0), FTDI_SIO_SET_FLOW_CTRL_REQUEST, FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, - 0, 0, buf, 0, WDR_TIMEOUT) < 0) { + 0, priv->interface, buf, 0, + WDR_TIMEOUT) < 0) { err("error from flowcontrol urb"); } @@ -1796,7 +1877,7 @@ if (usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0), FTDI_SIO_SET_DATA_REQUEST, FTDI_SIO_SET_DATA_REQUEST_TYPE, - urb_value , 0, + urb_value , priv->interface, buf, 0, WDR_TIMEOUT) < 0) { err("%s FAILED to enable/disable break state (state was %d)", __FUNCTION__,break_state); } @@ -1875,7 +1956,7 @@ if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), FTDI_SIO_SET_DATA_REQUEST, FTDI_SIO_SET_DATA_REQUEST_TYPE, - urb_value , 0, + urb_value , priv->interface, buf, 0, 100) < 0) { err("%s FAILED to set databits/stopbits/parity", __FUNCTION__); } @@ -1886,7 +1967,7 @@ if (usb_control_msg(dev, usb_sndctrlpipe(dev, 0), FTDI_SIO_SET_FLOW_CTRL_REQUEST, FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, - 0, 0, + 0, priv->interface, buf, 0, WDR_TIMEOUT) < 0) { err("%s error from disable flowcontrol urb", __FUNCTION__); } @@ -1913,7 +1994,7 @@ usb_sndctrlpipe(dev, 0), FTDI_SIO_SET_FLOW_CTRL_REQUEST, FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, - 0 , FTDI_SIO_RTS_CTS_HS, + 0 , (FTDI_SIO_RTS_CTS_HS | priv->interface), buf, 0, WDR_TIMEOUT) < 0) { err("urb failed to set to rts/cts flow control"); } @@ -1939,7 +2020,8 @@ usb_sndctrlpipe(dev, 0), FTDI_SIO_SET_FLOW_CTRL_REQUEST, FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, - urb_value , FTDI_SIO_XON_XOFF_HS, + urb_value , (FTDI_SIO_XON_XOFF_HS + | priv->interface), buf, 0, WDR_TIMEOUT) < 0) { err("urb failed to set to xon/xoff flow control"); } @@ -1951,7 +2033,7 @@ usb_sndctrlpipe(dev, 0), FTDI_SIO_SET_FLOW_CTRL_REQUEST, FTDI_SIO_SET_FLOW_CTRL_REQUEST_TYPE, - 0, 0, + 0, priv->interface, buf, 0, WDR_TIMEOUT) < 0) { err("urb failed to clear flow control"); } @@ -1985,13 +2067,14 @@ break; case FT8U232AM: case FT232BM: + case FT2232C: /* the 8U232AM returns a two byte value (the sio is a 1 byte value) - in the same format as the data returned from the in point */ if ((ret = usb_control_msg(port->serial->dev, usb_rcvctrlpipe(port->serial->dev, 0), FTDI_SIO_GET_MODEM_STATUS_REQUEST, FTDI_SIO_GET_MODEM_STATUS_REQUEST_TYPE, - 0, 0, + 0, priv->interface, buf, 2, WDR_TIMEOUT)) < 0 ) { err("%s Could not get modem status of device - err: %d", __FUNCTION__, ret); @@ -2206,6 +2289,9 @@ retval = usb_serial_register(&ftdi_FT232BM_device); if (retval) goto failed_FT232BM_register; + retval = usb_serial_register(&ftdi_FT2232C_device); + if (retval) + goto failed_FT2232C_register; retval = usb_serial_register(&ftdi_USB_UIRT_device); if (retval) goto failed_USB_UIRT_register; @@ -2223,6 +2309,8 @@ failed_HE_TIRA1_register: usb_serial_deregister(&ftdi_USB_UIRT_device); failed_USB_UIRT_register: + usb_serial_deregister(&ftdi_FT2232C_device); +failed_FT2232C_register: usb_serial_deregister(&ftdi_FT232BM_device); failed_FT232BM_register: usb_serial_deregister(&ftdi_8U232AM_device); @@ -2241,6 +2329,7 @@ usb_deregister (&ftdi_driver); usb_serial_deregister (&ftdi_HE_TIRA1_device); usb_serial_deregister (&ftdi_USB_UIRT_device); + usb_serial_deregister (&ftdi_FT2232C_device); usb_serial_deregister (&ftdi_FT232BM_device); usb_serial_deregister (&ftdi_8U232AM_device); usb_serial_deregister (&ftdi_SIO_device); diff -Nru a/drivers/usb/serial/ftdi_sio.h b/drivers/usb/serial/ftdi_sio.h --- a/drivers/usb/serial/ftdi_sio.h Tue Jul 27 18:12:46 2004 +++ b/drivers/usb/serial/ftdi_sio.h Tue Jul 27 18:12:46 2004 @@ -26,6 +26,7 @@ #define FTDI_SIO_PID 0x8372 /* Product Id SIO application of 8U100AX */ #define FTDI_8U232AM_PID 0x6001 /* Similar device to SIO above */ #define FTDI_8U232AM_ALT_PID 0x6006 /* FTDI's alternate PID for above */ +#define FTDI_8U2232C_PID 0x6010 /* Dual channel device */ #define FTDI_RELAIS_PID 0xFA10 /* Relais device from Rudolf Gugler */ #define FTDI_NF_RIC_VID 0x0DCD /* Vendor Id */ #define FTDI_NF_RIC_PID 0x0001 /* Product Id */ @@ -234,6 +235,21 @@ #define FTDI_SIO_SET_EVENT_CHAR 6 /* Set the event character */ #define FTDI_SIO_SET_ERROR_CHAR 7 /* Set the error character */ +/* Port interface code for FT2232C */ +#define INTERFACE_A 1 +#define INTERFACE_B 2 + + +/* + * BmRequestType: 1100 0000b + * bRequest: FTDI_E2_READ + * wValue: 0 + * wIndex: Address of word to read + * wLength: 2 + * Data: Will return a word of data from E2Address + * + */ + /* Port Identifier Table */ #define PIT_DEFAULT 0 /* SIOA */ #define PIT_SIOA 1 /* SIOA */ @@ -333,6 +349,7 @@ SIO = 1, FT8U232AM = 2, FT232BM = 3, + FT2232C = 4, } ftdi_chip_type_t; typedef enum {
