diff options
Diffstat (limited to 'drivers/usb/serial/oti6858.c')
| -rw-r--r-- | drivers/usb/serial/oti6858.c | 255 |
1 files changed, 118 insertions, 137 deletions
diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index a9625c180dc3..81db5715ee25 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -25,7 +25,8 @@ * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License. * - * See Documentation/usb/usb-serial.txt for more information on using this driver + * See Documentation/usb/usb-serial.txt for more information on using this + * driver * * TODO: * - implement correct flushing for ioctls and oti6858_close() @@ -49,7 +50,7 @@ #include <linux/spinlock.h> #include <linux/usb.h> #include <linux/usb/serial.h> -#include <asm/uaccess.h> +#include <linux/uaccess.h> #include "oti6858.h" #define OTI6858_DESCRIPTION \ @@ -135,27 +136,28 @@ struct oti6858_control_pkt { #define OTI6858_CTRL_PKT_SIZE sizeof(struct oti6858_control_pkt) #define OTI6858_CTRL_EQUALS_PENDING(a, priv) \ - ( ((a)->divisor == (priv)->pending_setup.divisor) \ + (((a)->divisor == (priv)->pending_setup.divisor) \ && ((a)->control == (priv)->pending_setup.control) \ - && ((a)->frame_fmt == (priv)->pending_setup.frame_fmt) ) + && ((a)->frame_fmt == (priv)->pending_setup.frame_fmt)) /* function prototypes */ -static int oti6858_open(struct usb_serial_port *port, struct file *filp); -static void oti6858_close(struct usb_serial_port *port, struct file *filp); -static void oti6858_set_termios(struct usb_serial_port *port, - struct ktermios *old); -static int oti6858_ioctl(struct usb_serial_port *port, struct file *file, +static int oti6858_open(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp); +static void oti6858_close(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp); +static void oti6858_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old); +static int oti6858_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg); static void oti6858_read_int_callback(struct urb *urb); static void oti6858_read_bulk_callback(struct urb *urb); static void oti6858_write_bulk_callback(struct urb *urb); -static int oti6858_write(struct usb_serial_port *port, +static int oti6858_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count); -static int oti6858_write_room(struct usb_serial_port *port); -static void oti6858_break_ctl(struct usb_serial_port *port, int break_state); -static int oti6858_chars_in_buffer(struct usb_serial_port *port); -static int oti6858_tiocmget(struct usb_serial_port *port, struct file *file); -static int oti6858_tiocmset(struct usb_serial_port *port, struct file *file, +static int oti6858_write_room(struct tty_struct *tty); +static int oti6858_chars_in_buffer(struct tty_struct *tty); +static int oti6858_tiocmget(struct tty_struct *tty, struct file *file); +static int oti6858_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear); static int oti6858_startup(struct usb_serial *serial); static void oti6858_shutdown(struct usb_serial *serial); @@ -184,7 +186,6 @@ static struct usb_serial_driver oti6858_device = { .close = oti6858_close, .write = oti6858_write, .ioctl = oti6858_ioctl, - .break_ctl = oti6858_break_ctl, .set_termios = oti6858_set_termios, .tiocmget = oti6858_tiocmget, .tiocmset = oti6858_tiocmset, @@ -220,7 +221,7 @@ struct oti6858_private { struct delayed_work delayed_setup_work; wait_queue_head_t intr_wait; - struct usb_serial_port *port; /* USB port with which associated */ + struct usb_serial_port *port; /* USB port with which associated */ }; #undef dbg @@ -229,7 +230,8 @@ struct oti6858_private { static void setup_line(struct work_struct *work) { - struct oti6858_private *priv = container_of(work, struct oti6858_private, delayed_setup_work.work); + struct oti6858_private *priv = container_of(work, + struct oti6858_private, delayed_setup_work.work); struct usb_serial_port *port = priv->port; struct oti6858_control_pkt *new_setup; unsigned long flags; @@ -237,10 +239,12 @@ static void setup_line(struct work_struct *work) dbg("%s(port = %d)", __func__, port->number); - if ((new_setup = kmalloc(OTI6858_CTRL_PKT_SIZE, GFP_KERNEL)) == NULL) { + new_setup = kmalloc(OTI6858_CTRL_PKT_SIZE, GFP_KERNEL); + if (new_setup == NULL) { dev_err(&port->dev, "%s(): out of memory!\n", __func__); /* we will try again */ - schedule_delayed_work(&priv->delayed_setup_work, msecs_to_jiffies(2)); + schedule_delayed_work(&priv->delayed_setup_work, + msecs_to_jiffies(2)); return; } @@ -256,7 +260,8 @@ static void setup_line(struct work_struct *work) dev_err(&port->dev, "%s(): error reading status\n", __func__); kfree(new_setup); /* we will try again */ - schedule_delayed_work(&priv->delayed_setup_work, msecs_to_jiffies(2)); + schedule_delayed_work(&priv->delayed_setup_work, + msecs_to_jiffies(2)); return; } @@ -297,7 +302,8 @@ static void setup_line(struct work_struct *work) void send_data(struct work_struct *work) { - struct oti6858_private *priv = container_of(work, struct oti6858_private, delayed_write_work.work); + struct oti6858_private *priv = container_of(work, + struct oti6858_private, delayed_write_work.work); struct usb_serial_port *port = priv->port; int count = 0, result; unsigned long flags; @@ -308,7 +314,8 @@ void send_data(struct work_struct *work) spin_lock_irqsave(&priv->lock, flags); if (priv->flags.write_urb_in_use) { spin_unlock_irqrestore(&priv->lock, flags); - schedule_delayed_work(&priv->delayed_write_work, msecs_to_jiffies(2)); + schedule_delayed_work(&priv->delayed_write_work, + msecs_to_jiffies(2)); return; } priv->flags.write_urb_in_use = 1; @@ -359,8 +366,8 @@ void send_data(struct work_struct *work) static int oti6858_startup(struct usb_serial *serial) { - struct usb_serial_port *port = serial->port[0]; - struct oti6858_private *priv; + struct usb_serial_port *port = serial->port[0]; + struct oti6858_private *priv; int i; for (i = 0; i < serial->num_ports; ++i) { @@ -375,8 +382,8 @@ static int oti6858_startup(struct usb_serial *serial) spin_lock_init(&priv->lock); init_waitqueue_head(&priv->intr_wait); -// INIT_WORK(&priv->setup_work, setup_line, serial->port[i]); -// INIT_WORK(&priv->write_work, send_data, serial->port[i]); +/* INIT_WORK(&priv->setup_work, setup_line, serial->port[i]); */ +/* INIT_WORK(&priv->write_work, send_data, serial->port[i]); */ priv->port = port; INIT_DELAYED_WORK(&priv->delayed_setup_work, setup_line); INIT_DELAYED_WORK(&priv->delayed_write_work, send_data); @@ -395,7 +402,7 @@ static int oti6858_startup(struct usb_serial *serial) return -ENOMEM; } -static int oti6858_write(struct usb_serial_port *port, +static int oti6858_write(struct tty_struct *tty, struct usb_serial_port *port, const unsigned char *buf, int count) { struct oti6858_private *priv = usb_get_serial_port_data(port); @@ -413,8 +420,9 @@ static int oti6858_write(struct usb_serial_port *port, return count; } -static int oti6858_write_room(struct usb_serial_port *port) +static int oti6858_write_room(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; struct oti6858_private *priv = usb_get_serial_port_data(port); int room = 0; unsigned long flags; @@ -428,8 +436,9 @@ static int oti6858_write_room(struct usb_serial_port *port) return room; } -static int oti6858_chars_in_buffer(struct usb_serial_port *port) +static int oti6858_chars_in_buffer(struct tty_struct *tty) { + struct usb_serial_port *port = tty->driver_data; struct oti6858_private *priv = usb_get_serial_port_data(port); int chars = 0; unsigned long flags; @@ -443,8 +452,8 @@ static int oti6858_chars_in_buffer(struct usb_serial_port *port) return chars; } -static void oti6858_set_termios(struct usb_serial_port *port, - struct ktermios *old_termios) +static void oti6858_set_termios(struct tty_struct *tty, + struct usb_serial_port *port, struct ktermios *old_termios) { struct oti6858_private *priv = usb_get_serial_port_data(port); unsigned long flags; @@ -455,22 +464,22 @@ static void oti6858_set_termios(struct usb_serial_port *port, dbg("%s(port = %d)", __func__, port->number); - if (!port->tty || !port->tty->termios) { + if (!tty) { dbg("%s(): no tty structures", __func__); return; } spin_lock_irqsave(&priv->lock, flags); if (!priv->flags.termios_initialized) { - *(port->tty->termios) = tty_std_termios; - port->tty->termios->c_cflag = B38400 | CS8 | CREAD | HUPCL | CLOCAL; + *(tty->termios) = tty_std_termios; + tty->termios->c_cflag = B38400 | CS8 | CREAD | HUPCL | CLOCAL; + tty->termios->c_ispeed = 38400; + tty->termios->c_ospeed = 38400; priv->flags.termios_initialized = 1; - port->tty->termios->c_ispeed = 38400; - port->tty->termios->c_ospeed = 38400; } spin_unlock_irqrestore(&priv->lock, flags); - cflag = port->tty->termios->c_cflag; + cflag = tty->termios->c_cflag; spin_lock_irqsave(&priv->lock, flags); divisor = priv->pending_setup.divisor; @@ -480,19 +489,19 @@ static void oti6858_set_termios(struct usb_serial_port *port, frame_fmt &= ~FMT_DATA_BITS_MASK; switch (cflag & CSIZE) { - case CS5: - frame_fmt |= FMT_DATA_BITS_5; - break; - case CS6: - frame_fmt |= FMT_DATA_BITS_6; - break; - case CS7: - frame_fmt |= FMT_DATA_BITS_7; - break; - default: - case CS8: - frame_fmt |= FMT_DATA_BITS_8; - break; + case CS5: + frame_fmt |= FMT_DATA_BITS_5; + break; + case CS6: + frame_fmt |= FMT_DATA_BITS_6; + break; + case CS7: + frame_fmt |= FMT_DATA_BITS_7; + break; + default: + case CS8: + frame_fmt |= FMT_DATA_BITS_8; + break; } /* manufacturer claims that this device can work with baud rates @@ -500,7 +509,7 @@ static void oti6858_set_termios(struct usb_serial_port *port, * guarantee that any other baud rate will work (especially * the higher ones) */ - br = tty_get_baud_rate(port->tty); + br = tty_get_baud_rate(tty); if (br == 0) { divisor = 0; } else { @@ -511,23 +520,21 @@ static void oti6858_set_termios(struct usb_serial_port *port, new_divisor = (96000000 + 8 * br) / (16 * br); real_br = 96000000 / (16 * new_divisor); divisor = cpu_to_le16(new_divisor); - tty_encode_baud_rate(port->tty, real_br, real_br); + tty_encode_baud_rate(tty, real_br, real_br); } frame_fmt &= ~FMT_STOP_BITS_MASK; - if ((cflag & CSTOPB) != 0) { + if ((cflag & CSTOPB) != 0) frame_fmt |= FMT_STOP_BITS_2; - } else { + else frame_fmt |= FMT_STOP_BITS_1; - } frame_fmt &= ~FMT_PARITY_MASK; if ((cflag & PARENB) != 0) { - if ((cflag & PARODD) != 0) { + if ((cflag & PARODD) != 0) frame_fmt |= FMT_PARITY_ODD; - } else { + else frame_fmt |= FMT_PARITY_EVEN; - } } else { frame_fmt |= FMT_PARITY_NONE; } @@ -564,7 +571,8 @@ static void oti6858_set_termios(struct usb_serial_port *port, spin_unlock_irqrestore(&priv->lock, flags); } -static int oti6858_open(struct usb_serial_port *port, struct file *filp) +static int oti6858_open(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp) { struct oti6858_private *priv = usb_get_serial_port_data(port); struct ktermios tmp_termios; @@ -578,10 +586,11 @@ static int oti6858_open(struct usb_serial_port *port, struct file *filp) usb_clear_halt(serial->dev, port->write_urb->pipe); usb_clear_halt(serial->dev, port->read_urb->pipe); - if (port->open_count != 1) + if (port->port.count != 1) return 0; - if ((buf = kmalloc(OTI6858_CTRL_PKT_SIZE, GFP_KERNEL)) == NULL) { + buf = kmalloc(OTI6858_CTRL_PKT_SIZE, GFP_KERNEL); + if (buf == NULL) { dev_err(&port->dev, "%s(): out of memory!\n", __func__); return -ENOMEM; } @@ -617,18 +626,19 @@ static int oti6858_open(struct usb_serial_port *port, struct file *filp) if (result != 0) { dev_err(&port->dev, "%s(): usb_submit_urb() failed" " with error %d\n", __func__, result); - oti6858_close(port, NULL); + oti6858_close(tty, port, NULL); return -EPROTO; } /* setup termios */ - if (port->tty) - oti6858_set_termios(port, &tmp_termios); + if (tty) + oti6858_set_termios(tty, port, &tmp_termios); return 0; } -static void oti6858_close(struct usb_serial_port *port, struct file *filp) +static void oti6858_close(struct tty_struct *tty, + struct usb_serial_port *port, struct file *filp) { struct oti6858_private *priv = usb_get_serial_port_data(port); unsigned long flags; @@ -641,7 +651,7 @@ static void oti6858_close(struct usb_serial_port *port, struct file *filp) spin_lock_irqsave(&priv->lock, flags); timeout = 30 * HZ; /* PL2303_CLOSING_WAIT */ init_waitqueue_entry(&wait, current); - add_wait_queue(&port->tty->write_wait, &wait); + add_wait_queue(&tty->write_wait, &wait); dbg("%s(): entering wait loop", __func__); for (;;) { set_current_state(TASK_INTERRUPTIBLE); @@ -654,7 +664,7 @@ static void oti6858_close(struct usb_serial_port *port, struct file *filp) spin_lock_irqsave(&priv->lock, flags); } set_current_state(TASK_RUNNING); - remove_wait_queue(&port->tty->write_wait, &wait); + remove_wait_queue(&tty->write_wait, &wait); dbg("%s(): after wait loop", __func__); /* clear out any remaining data in the buffer */ @@ -669,7 +679,7 @@ static void oti6858_close(struct usb_serial_port *port, struct file *filp) /* data is in the buffer to compute a delay */ /* that is not unnecessarily long) */ /* FIXME - bps = tty_get_baud_rate(port->tty); + bps = tty_get_baud_rate(tty); if (bps > 1200) timeout = max((HZ*2560)/bps,HZ/10); else @@ -690,7 +700,7 @@ static void oti6858_close(struct usb_serial_port *port, struct file *filp) usb_kill_urb(port->interrupt_in_urb); /* - if (port->tty && (port->tty->termios->c_cflag) & HUPCL) { + if (tty && (tty->termios->c_cflag) & HUPCL) { // drop DTR and RTS spin_lock_irqsave(&priv->lock, flags); priv->pending_setup.control &= ~CONTROL_MASK; @@ -699,9 +709,10 @@ static void oti6858_close(struct usb_serial_port *port, struct file *filp) */ } -static int oti6858_tiocmset(struct usb_serial_port *port, struct file *file, +static int oti6858_tiocmset(struct tty_struct *tty, struct file *file, unsigned int set, unsigned int clear) { + struct usb_serial_port *port = tty->driver_data; struct oti6858_private *priv = usb_get_serial_port_data(port); unsigned long flags; u8 control; @@ -724,16 +735,16 @@ static int oti6858_tiocmset(struct usb_serial_port *port, struct file *file, if ((clear & TIOCM_DTR) != 0) control &= ~CONTROL_DTR_HIGH; - if (control != priv->pending_setup.control) { + if (control != priv->pending_setup.control) priv->pending_setup.control = control; - } - spin_unlock_irqrestore(&priv->lock, flags); + spin_unlock_irqrestore(&priv->lock, flags); return 0; } -static int oti6858_tiocmget(struct usb_serial_port *port, struct file *file) +static int oti6858_tiocmget(struct tty_struct *tty, struct file *file) { + struct usb_serial_port *port = tty->driver_data; struct oti6858_private *priv = usb_get_serial_port_data(port); unsigned long flags; unsigned pin_state; @@ -779,7 +790,8 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) spin_unlock_irqrestore(&priv->lock, flags); while (1) { - wait_event_interruptible(priv->intr_wait, priv->status.pin_state != prev); + wait_event_interruptible(priv->intr_wait, + priv->status.pin_state != prev); if (signal_pending(current)) return -ERESTARTSYS; @@ -789,12 +801,11 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) changed = prev ^ status; /* FIXME: check if this is correct (active high/low) */ - if ( ((arg & TIOCM_RNG) && (changed & PIN_RI)) || - ((arg & TIOCM_DSR) && (changed & PIN_DSR)) || - ((arg & TIOCM_CD) && (changed & PIN_DCD)) || - ((arg & TIOCM_CTS) && (changed & PIN_CTS))) { - return 0; - } + if (((arg & TIOCM_RNG) && (changed & PIN_RI)) || + ((arg & TIOCM_DSR) && (changed & PIN_DSR)) || + ((arg & TIOCM_CD) && (changed & PIN_DCD)) || + ((arg & TIOCM_CTS) && (changed & PIN_CTS))) + return 0; prev = status; } @@ -802,56 +813,25 @@ static int wait_modem_info(struct usb_serial_port *port, unsigned int arg) return 0; } -static int oti6858_ioctl(struct usb_serial_port *port, struct file *file, +static int oti6858_ioctl(struct tty_struct *tty, struct file *file, unsigned int cmd, unsigned long arg) { - void __user *user_arg = (void __user *) arg; - unsigned int x; + struct usb_serial_port *port = tty->driver_data; dbg("%s(port = %d, cmd = 0x%04x, arg = 0x%08lx)", __func__, port->number, cmd, arg); switch (cmd) { - case TIOCMBIS: - if (copy_from_user(&x, user_arg, sizeof(x))) - return -EFAULT; - return oti6858_tiocmset(port, NULL, x, 0); - - case TIOCMBIC: - if (copy_from_user(&x, user_arg, sizeof(x))) - return -EFAULT; - return oti6858_tiocmset(port, NULL, 0, x); - - case TIOCMIWAIT: - dbg("%s(): TIOCMIWAIT", __func__); - return wait_modem_info(port, arg); - - default: - dbg("%s(): 0x%04x not supported", __func__, cmd); - break; + case TIOCMIWAIT: + dbg("%s(): TIOCMIWAIT", __func__); + return wait_modem_info(port, arg); + default: + dbg("%s(): 0x%04x not supported", __func__, cmd); + break; } - return -ENOIOCTLCMD; } -static void oti6858_break_ctl(struct usb_serial_port *port, int break_state) -{ - int state; - - dbg("%s(port = %d)", __func__, port->number); - - state = (break_state == 0) ? 0 : 1; - dbg("%s(): turning break %s", __func__, state ? "on" : "off"); - - /* FIXME */ -/* - result = usb_control_msg (serial->dev, usb_sndctrlpipe (serial->dev, 0), - BREAK_REQUEST, BREAK_REQUEST_TYPE, state, - 0, NULL, 0, 100); - if (result != 0) - dbg("%s(): error sending break", __func__); - */ -} static void oti6858_shutdown(struct usb_serial *serial) { @@ -964,7 +944,7 @@ static void oti6858_read_int_callback(struct urb *urb) spin_lock_irqsave(&priv->lock, flags); if (priv->flags.write_urb_in_use == 0 && oti6858_buf_data_avail(priv->buf) != 0) { - schedule_delayed_work(&priv->delayed_write_work,0); + schedule_delayed_work(&priv->delayed_write_work, 0); resubmit = 0; } spin_unlock_irqrestore(&priv->lock, flags); @@ -973,7 +953,7 @@ static void oti6858_read_int_callback(struct urb *urb) if (resubmit) { int result; -// dbg("%s(): submitting interrupt urb", __func__); +/* dbg("%s(): submitting interrupt urb", __func__); */ urb->dev = port->serial->dev; result = usb_submit_urb(urb, GFP_ATOMIC); if (result != 0) { @@ -1002,14 +982,16 @@ static void oti6858_read_bulk_callback(struct urb *urb) spin_unlock_irqrestore(&priv->lock, flags); if (status != 0) { - if (!port->open_count) { + if (!port->port.count) { dbg("%s(): port is closed, exiting", __func__); return; } /* if (status == -EPROTO) { - // PL2303 mysteriously fails with -EPROTO reschedule the read - dbg("%s - caught -EPROTO, resubmitting the urb", __func__); + * PL2303 mysteriously fails with -EPROTO reschedule + the read * + dbg("%s - caught -EPROTO, resubmitting the urb", + __func__); result = usb_submit_urb(urb, GFP_ATOMIC); if (result) dev_err(&urb->dev->dev, "%s - failed resubmitting read urb, error %d\n", __func__, result); @@ -1020,14 +1002,14 @@ static void oti6858_read_bulk_callback(struct urb *urb) return; } - tty = port->tty; + tty = port->port.tty; if (tty != NULL && urb->actual_length > 0) { tty_insert_flip_string(tty, data, urb->actual_length); tty_flip_buffer_push(tty); } - // schedule the interrupt urb if we are still open */ - if (port->open_count != 0) { + /* schedule the interrupt urb if we are still open */ + if (port->port.count != 0) { port->interrupt_in_urb->dev = port->serial->dev; result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); if (result != 0) { @@ -1078,7 +1060,7 @@ static void oti6858_write_bulk_callback(struct urb *urb) priv->flags.write_urb_in_use = 0; - // schedule the interrupt urb if we are still open */ + /* schedule the interrupt urb if we are still open */ port->interrupt_in_urb->dev = port->serial->dev; dbg("%s(): submitting interrupt urb", __func__); result = usb_submit_urb(port->interrupt_in_urb, GFP_ATOMIC); @@ -1153,7 +1135,7 @@ static unsigned int oti6858_buf_data_avail(struct oti6858_buf *pb) { if (pb == NULL) return 0; - return ((pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size); + return (pb->buf_size + pb->buf_put - pb->buf_get) % pb->buf_size; } /* @@ -1166,7 +1148,7 @@ static unsigned int oti6858_buf_space_avail(struct oti6858_buf *pb) { if (pb == NULL) return 0; - return ((pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size); + return (pb->buf_size + pb->buf_get - pb->buf_put - 1) % pb->buf_size; } /* @@ -1253,13 +1235,12 @@ static int __init oti6858_init(void) { int retval; - if ((retval = usb_serial_register(&oti6858_device)) == 0) { - if ((retval = usb_register(&oti6858_driver)) != 0) + retval = usb_serial_register(&oti6858_device); + if (retval == 0) { + retval = usb_register(&oti6858_driver); + if (retval) usb_serial_deregister(&oti6858_device); - else - return 0; } - return retval; } |