diff options
| -rw-r--r-- | drivers/usb/serial/mct_u232.c | 273 |
1 files changed, 141 insertions, 132 deletions
diff --git a/drivers/usb/serial/mct_u232.c b/drivers/usb/serial/mct_u232.c index 7bce4302a5f..7a804d6b3a4 100644 --- a/drivers/usb/serial/mct_u232.c +++ b/drivers/usb/serial/mct_u232.c @@ -33,10 +33,11 @@ * - Fixed an endianess problem with the baudrate selection for PowerPC. * * 06-Dec-2001 Martin Hamilton <martinh@gnu.org> - * Added support for the Belkin F5U109 DB9 adaptor + * - Added support for the Belkin F5U109 DB9 adaptor * * 30-May-2001 Greg Kroah-Hartman - * switched from using spinlock to a semaphore, which fixes lots of problems. + * - switched from using spinlock to a semaphore, which fixes lots of + * problems. * * 04-May-2001 Stelian Pop * - Set the maximum bulk output size for Sitecom U232-P25 model to 16 bytes @@ -49,7 +50,7 @@ * 08-Apr-2001 gb * - Identify version on module load. * - * 06-Jan-2001 Cornel Ciocirlan + * 06-Jan-2001 Cornel Ciocirlan * - Added support for Sitecom U232-P25 model (Product Id 0x0230) * - Added support for D-Link DU-H3SP USB BAY (Product Id 0x0200) * @@ -59,8 +60,8 @@ * (lots of things will change if/when the usb-serial core changes to * handle these issues. * - * 27-Nov-2000 Wolfgang Grandegger - * A version for kernel 2.4.0-test10 released to the Linux community + * 27-Nov-2000 Wolfgang Grandegge + * A version for kernel 2.4.0-test10 released to the Linux community * (via linux-usb-devel). */ @@ -73,7 +74,7 @@ #include <linux/tty_flip.h> #include <linux/module.h> #include <linux/spinlock.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include <linux/usb.h> #include <linux/usb/serial.h> #include "mct_u232.h" @@ -90,27 +91,21 @@ static int debug; /* * Function prototypes */ -static int mct_u232_startup (struct usb_serial *serial); -static void mct_u232_shutdown (struct usb_serial *serial); -static int mct_u232_open (struct tty_struct *tty, - struct usb_serial_port *port, - struct file *filp); -static void mct_u232_close (struct tty_struct *tty, - struct usb_serial_port *port, - struct file *filp); -static void mct_u232_read_int_callback (struct urb *urb); -static void mct_u232_set_termios (struct tty_struct *tty, - struct usb_serial_port *port, - struct ktermios * old); -static void mct_u232_break_ctl (struct tty_struct *tty, - int break_state ); -static int mct_u232_tiocmget (struct tty_struct *tty, - struct file *file); -static int mct_u232_tiocmset (struct tty_struct *tty, - struct file *file, unsigned int set, - unsigned int clear); -static void mct_u232_throttle (struct tty_struct *tty); -static void mct_u232_unthrottle (struct tty_struct *tty); +static int mct_u232_startup(struct usb_serial *serial); +static void mct_u232_shutdown(struct usb_serial *serial); +static int mct_u232_open(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp); +static void mct_u232_close(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp); +static void mct_u232_read_int_callback(struct urb *urb); +static void mct_u232_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old); +static void mct_u232_break_ctl(struct tty_struct *tty, int break_state); +static int mct_u232_tiocmget(struct tty_struct *tty, struct file *file); +static int mct_u232_tiocmset(struct tty_struct *tty, struct file *file, + unsigned int set, unsigned int clear); +static void mct_u232_throttle(struct tty_struct *tty); +static void mct_u232_unthrottle(struct tty_struct *tty); /* @@ -124,7 +119,7 @@ static struct usb_device_id id_table_combined [] = { { } /* Terminating entry */ }; -MODULE_DEVICE_TABLE (usb, id_table_combined); +MODULE_DEVICE_TABLE(usb, id_table_combined); static struct usb_driver mct_u232_driver = { .name = "mct_u232", @@ -178,23 +173,34 @@ struct mct_u232_private { * Later day 2.6.0-test kernels have new baud rates like B230400 which * we do not know how to support. We ignore them for the moment. */ -static int mct_u232_calculate_baud_rate(struct usb_serial *serial, speed_t value, speed_t *result) +static int mct_u232_calculate_baud_rate(struct usb_serial *serial, + speed_t value, speed_t *result) { *result = value; if (le16_to_cpu(serial->dev->descriptor.idProduct) == MCT_U232_SITECOM_PID - || le16_to_cpu(serial->dev->descriptor.idProduct) == MCT_U232_BELKIN_F5U109_PID) { + || le16_to_cpu(serial->dev->descriptor.idProduct) == MCT_U232_BELKIN_F5U109_PID) { switch (value) { - case 300: return 0x01; - case 600: return 0x02; /* this one not tested */ - case 1200: return 0x03; - case 2400: return 0x04; - case 4800: return 0x06; - case 9600: return 0x08; - case 19200: return 0x09; - case 38400: return 0x0a; - case 57600: return 0x0b; - case 115200: return 0x0c; + case 300: + return 0x01; + case 600: + return 0x02; /* this one not tested */ + case 1200: + return 0x03; + case 2400: + return 0x04; + case 4800: + return 0x06; + case 9600: + return 0x08; + case 19200: + return 0x09; + case 38400: + return 0x0a; + case 57600: + return 0x0b; + case 115200: + return 0x0c; default: *result = 9600; return 0x08; @@ -226,18 +232,19 @@ static int mct_u232_set_baud_rate(struct tty_struct *tty, struct usb_serial *serial, struct usb_serial_port *port, speed_t value) { __le32 divisor; - int rc; - unsigned char zero_byte = 0; - unsigned char cts_enable_byte = 0; - speed_t speed; - - divisor = cpu_to_le32(mct_u232_calculate_baud_rate(serial, value, &speed)); - - rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - MCT_U232_SET_BAUD_RATE_REQUEST, - MCT_U232_SET_REQUEST_TYPE, - 0, 0, &divisor, MCT_U232_SET_BAUD_RATE_SIZE, - WDR_TIMEOUT); + int rc; + unsigned char zero_byte = 0; + unsigned char cts_enable_byte = 0; + speed_t speed; + + divisor = cpu_to_le32(mct_u232_calculate_baud_rate(serial, value, + &speed)); + + rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), + MCT_U232_SET_BAUD_RATE_REQUEST, + MCT_U232_SET_REQUEST_TYPE, + 0, 0, &divisor, MCT_U232_SET_BAUD_RATE_SIZE, + WDR_TIMEOUT); if (rc < 0) /*FIXME: What value speed results */ err("Set BAUD RATE %d failed (error = %d)", value, rc); else @@ -256,55 +263,55 @@ static int mct_u232_set_baud_rate(struct tty_struct *tty, whether data will be transmitted to a device which is not asserting the 'CTS' signal. If the second message's data byte is zero, data will be transmitted even if 'CTS' is not asserted (i.e. no hardware - flow control). if the second message's data byte is nonzero (a value - of 1 is used by this driver), data will not be transmitted to a device - which is not asserting 'CTS'. + flow control). if the second message's data byte is nonzero (a + value of 1 is used by this driver), data will not be transmitted to + a device which is not asserting 'CTS'. */ rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - MCT_U232_SET_UNKNOWN1_REQUEST, - MCT_U232_SET_REQUEST_TYPE, - 0, 0, &zero_byte, MCT_U232_SET_UNKNOWN1_SIZE, - WDR_TIMEOUT); + MCT_U232_SET_UNKNOWN1_REQUEST, + MCT_U232_SET_REQUEST_TYPE, + 0, 0, &zero_byte, MCT_U232_SET_UNKNOWN1_SIZE, + WDR_TIMEOUT); if (rc < 0) - err("Sending USB device request code %d failed (error = %d)", + err("Sending USB device request code %d failed (error = %d)", MCT_U232_SET_UNKNOWN1_REQUEST, rc); - if (port && C_CRTSCTS(tty)) { + if (port && C_CRTSCTS(tty)) cts_enable_byte = 1; - } - dbg("set_baud_rate: send second control message, data = %02X", cts_enable_byte); + dbg("set_baud_rate: send second control message, data = %02X", + cts_enable_byte); rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - MCT_U232_SET_CTS_REQUEST, - MCT_U232_SET_REQUEST_TYPE, - 0, 0, &cts_enable_byte, MCT_U232_SET_CTS_SIZE, - WDR_TIMEOUT); + MCT_U232_SET_CTS_REQUEST, + MCT_U232_SET_REQUEST_TYPE, + 0, 0, &cts_enable_byte, MCT_U232_SET_CTS_SIZE, + WDR_TIMEOUT); if (rc < 0) - err("Sending USB device request code %d failed (error = %d)", - MCT_U232_SET_CTS_REQUEST, rc); + err("Sending USB device request code %d failed (error = %d)", + MCT_U232_SET_CTS_REQUEST, rc); - return rc; + return rc; } /* mct_u232_set_baud_rate */ static int mct_u232_set_line_ctrl(struct usb_serial *serial, unsigned char lcr) { - int rc; - rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - MCT_U232_SET_LINE_CTRL_REQUEST, - MCT_U232_SET_REQUEST_TYPE, - 0, 0, &lcr, MCT_U232_SET_LINE_CTRL_SIZE, - WDR_TIMEOUT); + int rc; + rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), + MCT_U232_SET_LINE_CTRL_REQUEST, + MCT_U232_SET_REQUEST_TYPE, + 0, 0, &lcr, MCT_U232_SET_LINE_CTRL_SIZE, + WDR_TIMEOUT); if (rc < 0) err("Set LINE CTRL 0x%x failed (error = %d)", lcr, rc); dbg("set_line_ctrl: 0x%x", lcr); - return rc; + return rc; } /* mct_u232_set_line_ctrl */ static int mct_u232_set_modem_ctrl(struct usb_serial *serial, unsigned int control_state) { - int rc; + int rc; unsigned char mcr = MCT_U232_MCR_NONE; if (control_state & TIOCM_DTR) @@ -312,37 +319,39 @@ static int mct_u232_set_modem_ctrl(struct usb_serial *serial, if (control_state & TIOCM_RTS) mcr |= MCT_U232_MCR_RTS; - rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), - MCT_U232_SET_MODEM_CTRL_REQUEST, - MCT_U232_SET_REQUEST_TYPE, - 0, 0, &mcr, MCT_U232_SET_MODEM_CTRL_SIZE, - WDR_TIMEOUT); + rc = usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), + MCT_U232_SET_MODEM_CTRL_REQUEST, + MCT_U232_SET_REQUEST_TYPE, + 0, 0, &mcr, MCT_U232_SET_MODEM_CTRL_SIZE, + WDR_TIMEOUT); if (rc < 0) err("Set MODEM CTRL 0x%x failed (error = %d)", mcr, rc); dbg("set_modem_ctrl: state=0x%x ==> mcr=0x%x", control_state, mcr); - return rc; + return rc; } /* mct_u232_set_modem_ctrl */ -static int mct_u232_get_modem_stat(struct usb_serial *serial, unsigned char *msr) +static int mct_u232_get_modem_stat(struct usb_serial *serial, + unsigned char *msr) { - int rc; - rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), - MCT_U232_GET_MODEM_STAT_REQUEST, - MCT_U232_GET_REQUEST_TYPE, - 0, 0, msr, MCT_U232_GET_MODEM_STAT_SIZE, - WDR_TIMEOUT); + int rc; + rc = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), + MCT_U232_GET_MODEM_STAT_REQUEST, + MCT_U232_GET_REQUEST_TYPE, + 0, 0, msr, MCT_U232_GET_MODEM_STAT_SIZE, + WDR_TIMEOUT); if (rc < 0) { err("Get MODEM STATus failed (error = %d)", rc); *msr = 0; } dbg("get_modem_stat: 0x%x", *msr); - return rc; + return rc; } /* mct_u232_get_modem_stat */ -static void mct_u232_msr_to_state(unsigned int *control_state, unsigned char msr) +static void mct_u232_msr_to_state(unsigned int *control_state, + unsigned char msr) { - /* Translate Control Line states */ + /* Translate Control Line states */ if (msr & MCT_U232_MSR_DSR) *control_state |= TIOCM_DSR; else @@ -359,14 +368,14 @@ static void mct_u232_msr_to_state(unsigned int *control_state, unsigned char msr *control_state |= TIOCM_CD; else *control_state &= ~TIOCM_CD; - dbg("msr_to_state: msr=0x%x ==> state=0x%x", msr, *control_state); + dbg("msr_to_state: msr=0x%x ==> state=0x%x", msr, *control_state); } /* mct_u232_msr_to_state */ /* * Driver's tty interface functions */ -static int mct_u232_startup (struct usb_serial *serial) +static int mct_u232_startup(struct usb_serial *serial) { struct mct_u232_private *priv; struct usb_serial_port *port, *rport; @@ -388,18 +397,18 @@ static int mct_u232_startup (struct usb_serial *serial) rport->interrupt_in_urb = NULL; port->read_urb->context = port; - return (0); + return 0; } /* mct_u232_startup */ -static void mct_u232_shutdown (struct usb_serial *serial) +static void mct_u232_shutdown(struct usb_serial *serial) { struct mct_u232_private *priv; int i; - + dbg("%s", __func__); - for (i=0; i < serial->num_ports; ++i) { + for (i = 0; i < serial->num_ports; ++i) { /* My special items, the standard routines free my urbs */ priv = usb_get_serial_port_data(serial->port[i]); if (priv) { @@ -409,7 +418,7 @@ static void mct_u232_shutdown (struct usb_serial *serial) } } /* mct_u232_shutdown */ -static int mct_u232_open (struct tty_struct *tty, +static int mct_u232_open(struct tty_struct *tty, struct usb_serial_port *port, struct file *filp) { struct usb_serial *serial = port->serial; @@ -427,10 +436,11 @@ static int mct_u232_open (struct tty_struct *tty, * it seems to be able to accept only 16 bytes (and that's what * SniffUSB says too...) */ - if (le16_to_cpu(serial->dev->descriptor.idProduct) == MCT_U232_SITECOM_PID) + if (le16_to_cpu(serial->dev->descriptor.idProduct) + == MCT_U232_SITECOM_PID) port->bulk_out_size = 16; - /* Do a defined restart: the normal serial device seems to + /* Do a defined restart: the normal serial device seems to * always turn on DTR and RTS here, so do the same. I'm not * sure if this is really necessary. But it should not harm * either. @@ -440,8 +450,8 @@ static int mct_u232_open (struct tty_struct *tty, priv->control_state = TIOCM_DTR | TIOCM_RTS; else priv->control_state = 0; - - priv->last_lcr = (MCT_U232_DATA_BITS_8 | + + priv->last_lcr = (MCT_U232_DATA_BITS_8 | MCT_U232_PARITY_NONE | MCT_U232_STOP_BITS_1); control_state = priv->control_state; @@ -488,7 +498,7 @@ static void mct_u232_close(struct tty_struct *tty, struct mct_u232_private *priv = usb_get_serial_port_data(port); dbg("%s port %d", __func__, port->number); - if (tty) { + if (tty) { c_cflag = tty->termios->c_cflag; mutex_lock(&port->serial->disc_mutex); if (c_cflag & HUPCL && !port->serial->disconnected) { @@ -512,7 +522,7 @@ static void mct_u232_close(struct tty_struct *tty, } /* mct_u232_close */ -static void mct_u232_read_int_callback (struct urb *urb) +static void mct_u232_read_int_callback(struct urb *urb) { struct usb_serial_port *port = urb->context; struct mct_u232_private *priv = usb_get_serial_port_data(port); @@ -545,8 +555,9 @@ static void mct_u232_read_int_callback (struct urb *urb) return; } - dbg("%s - port %d", __func__, port->number); - usb_serial_debug_data(debug, &port->dev, __func__, urb->actual_length, data); + dbg("%s - port %d", __func__, port->number); + usb_serial_debug_data(debug, &port->dev, __func__, + urb->actual_length, data); /* * Work-a-round: handle the 'usual' bulk-in pipe here @@ -555,26 +566,25 @@ static void mct_u232_read_int_callback (struct urb *urb) int i; tty = port->port.tty; if (urb->actual_length) { - for (i = 0; i < urb->actual_length ; ++i) { + for (i = 0; i < urb->actual_length ; ++i) tty_insert_flip_char(tty, data[i], 0); - } tty_flip_buffer_push(tty); } goto exit; } - + /* * The interrupt-in pipe signals exceptional conditions (modem line * signal changes and errors). data[0] holds MSR, data[1] holds LSR. */ spin_lock_irqsave(&priv->lock, flags); priv->last_msr = data[MCT_U232_MSR_INDEX]; - + /* Record Control Line states */ mct_u232_msr_to_state(&priv->control_state, priv->last_msr); #if 0 - /* Not yet handled. See belin_sa.c for further information */ + /* Not yet handled. See belkin_sa.c for further information */ /* Now to report any errors */ priv->last_lsr = data[MCT_U232_LSR_INDEX]; /* @@ -600,15 +610,15 @@ static void mct_u232_read_int_callback (struct urb *urb) #endif spin_unlock_irqrestore(&priv->lock, flags); exit: - retval = usb_submit_urb (urb, GFP_ATOMIC); + retval = usb_submit_urb(urb, GFP_ATOMIC); if (retval) - err ("%s - usb_submit_urb failed with result %d", + err("%s - usb_submit_urb failed with result %d", __func__, retval); } /* mct_u232_read_int_callback */ -static void mct_u232_set_termios (struct tty_struct *tty, - struct usb_serial_port *port, - struct ktermios *old_termios) +static void mct_u232_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, + struct ktermios *old_termios) { struct usb_serial *serial = port->serial; struct mct_u232_private *priv = usb_get_serial_port_data(port); @@ -632,7 +642,7 @@ static void mct_u232_set_termios (struct tty_struct *tty, * Premature optimization is the root of all evil. */ - /* reassert DTR and RTS on transition from B0 */ + /* reassert DTR and RTS on transition from B0 */ if ((old_cflag & CBAUD) == B0) { dbg("%s: baud was B0", __func__); control_state |= TIOCM_DTR | TIOCM_RTS; @@ -641,11 +651,11 @@ static void mct_u232_set_termios (struct tty_struct *tty, mct_u232_set_baud_rate(tty, serial, port, tty_get_baud_rate(tty)); - if ((cflag & CBAUD) == B0 ) { + if ((cflag & CBAUD) == B0) { dbg("%s: baud is B0", __func__); /* Drop RTS and DTR */ control_state &= ~(TIOCM_DTR | TIOCM_RTS); - mct_u232_set_modem_ctrl(serial, control_state); + mct_u232_set_modem_ctrl(serial, control_state); } /* @@ -717,7 +727,7 @@ static int mct_u232_tiocmget(struct tty_struct *tty, struct file *file) struct mct_u232_private *priv = usb_get_serial_port_data(port); unsigned int control_state; unsigned long flags; - + dbg("%s", __func__); spin_lock_irqsave(&priv->lock, flags); @@ -735,7 +745,7 @@ static int mct_u232_tiocmset(struct tty_struct *tty, struct file *file, struct mct_u232_private *priv = usb_get_serial_port_data(port); unsigned int control_state; unsigned long flags; - + dbg("%s", __func__); spin_lock_irqsave(&priv->lock, flags); @@ -798,7 +808,7 @@ static void mct_u232_unthrottle(struct tty_struct *tty) } } -static int __init mct_u232_init (void) +static int __init mct_u232_init(void) { int retval; retval = usb_serial_register(&mct_u232_device); @@ -816,18 +826,17 @@ failed_usb_serial_register: } -static void __exit mct_u232_exit (void) +static void __exit mct_u232_exit(void) { - usb_deregister (&mct_u232_driver); - usb_serial_deregister (&mct_u232_device); + usb_deregister(&mct_u232_driver); + usb_serial_deregister(&mct_u232_device); } - -module_init (mct_u232_init); +module_init(mct_u232_init); module_exit(mct_u232_exit); -MODULE_AUTHOR( DRIVER_AUTHOR ); -MODULE_DESCRIPTION( DRIVER_DESC ); +MODULE_AUTHOR(DRIVER_AUTHOR); +MODULE_DESCRIPTION(DRIVER_DESC); MODULE_LICENSE("GPL"); module_param(debug, bool, S_IRUGO | S_IWUSR); |