mirror of https://gitee.com/openkylin/linux.git
serqt: initial clean up pass for tty side
Avoid using port->tty where possible (makes refcount fixing easier later). Remove unused code (the ioctl path is not used if the device has mget/mset functions) Remove various un-needed typecasts and long names so it could read it to do the changes. Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alan Cox
Linus Torvalds
parent
6fd1af4cf9
commit
0c21260398
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@ -289,7 +289,8 @@ static void serial_unthrottle(struct tty_struct *tty);
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static int serial_break(struct tty_struct *tty, int break_state);
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static int serial_chars_in_buffer(struct tty_struct *tty);
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static int qt_open(struct usb_serial_port *port, struct file *filp);
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static int qt_open(struct tty_struct *tty, struct usb_serial_port *port,
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struct file *filp);
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static int BoxSetPrebufferLevel(struct usb_serial *serial);
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static int BoxSetATC(struct usb_serial *serial, __u16 n_Mode);
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@ -300,24 +301,26 @@ static int BoxSetUart(struct usb_serial *serial, unsigned short Uart_Number,
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static int BoxOPenCloseChannel(struct usb_serial *serial, __u16 Uart_Number,
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__u16 OpenClose,
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struct qt_open_channel_data *pDeviceData);
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static void qt_close(struct usb_serial_port *port, struct file *filp);
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static void qt_close(struct tty_struct *tty, struct usb_serial_port *port,
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struct file *filp);
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static int BoxGetRegister(struct usb_serial *serial, unsigned short Uart_Number,
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unsigned short Register_Num, __u8 *pValue);
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static int BoxSetRegister(struct usb_serial *serial, unsigned short Uart_Number,
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unsigned short Register_Num, unsigned short Value);
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static void qt_write_bulk_callback(struct urb *urb);
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static int qt_write(struct usb_serial_port *port, int from_user,
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static int qt_write(struct tty_struct *tty, struct usb_serial_port *port,
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const unsigned char *buf, int count);
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static void port_softint(struct work_struct *work);
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static int qt_write_room(struct usb_serial_port *port);
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static int qt_chars_in_buffer(struct usb_serial_port *port);
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static int qt_ioctl(struct usb_serial_port *port, struct file *file,
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unsigned int cmd, unsigned long arg);
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static void qt_set_termios(struct usb_serial_port *port,
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static int qt_ioctl(struct tty_struct *tty, struct usb_serial_port *port,
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struct file *file, unsigned int cmd, unsigned long arg);
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static void qt_set_termios(struct tty_struct *tty,
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struct usb_serial_port *port,
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struct ktermios *old_termios);
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static int BoxSetHW_FlowCtrl(struct usb_serial *serial, unsigned int UartNumber,
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static int BoxSetHW_FlowCtrl(struct usb_serial *serial, unsigned int index,
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int bSet);
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static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 UartNumber);
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static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 index);
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static int EmulateWriteQMCR_Reg(int index, unsigned uc_value);
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static int EmulateReadQMCR_Reg(int index, unsigned *uc_value);
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static struct usb_serial *find_the_box(unsigned int index);
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@ -336,10 +339,11 @@ static int serial_tiocmset(struct tty_struct *tty, struct file *file,
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unsigned int set, unsigned int clear);
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static int serial_tiocmget(struct tty_struct *tty, struct file *file);
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static int qt_tiocmset(struct usb_serial_port *port, struct file *file,
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unsigned int value);
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static int qt_tiocmset(struct tty_struct *tty, struct usb_serial_port *port,
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struct file *file, unsigned int value);
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static int qt_tiocmget(struct usb_serial_port *port, struct file *file);
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static int qt_tiocmget(struct tty_struct *tty, struct usb_serial_port *port,
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struct file *file);
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/* Version Information */
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#define DRIVER_VERSION "v2.14"
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@ -818,7 +822,7 @@ static struct usb_serial *get_free_serial(int num_ports, int *minor)
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return NULL;
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}
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static int flip_that(struct tty_struct *tty, __u16 UartNumber,
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static int flip_that(struct tty_struct *tty, __u16 index,
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struct usb_serial *serial)
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{
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tty_flip_buffer_push(tty);
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@ -829,18 +833,18 @@ static int flip_that(struct tty_struct *tty, __u16 UartNumber,
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/* Handles processing and moving data to the tty layer */
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static void port_sofrint(void *private)
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{
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struct usb_serial_port *port = (struct usb_serial_port *)private;
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struct usb_serial_port *port = private;
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struct usb_serial *serial = get_usb_serial(port, __func__);
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struct tty_struct *tty = port->tty;
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unsigned char *data = port->read_urb->transfer_buffer;
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unsigned int UartNumber;
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unsigned int index;
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struct urb *urb = port->read_urb;
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unsigned int RxCount = urb->actual_length;
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int i, result;
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int flag, flag_data;
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/* UartNumber = MINOR(port->tty->device) - serial->minor; */
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UartNumber = tty->index - serial->minor;
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/* index = MINOR(port->tty->device) - serial->minor; */
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index = tty->index - serial->minor;
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mydbg("%s - port %d\n", __func__, port->number);
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mydbg("%s - port->RxHolding = %d\n", __func__, port->RxHolding);
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@ -948,7 +952,7 @@ static void port_sofrint(void *private)
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__func__, result);
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else {
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if (tty && RxCount)
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flip_that(tty, UartNumber, serial);
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flip_that(tty, index, serial);
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}
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return;
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@ -1097,7 +1101,7 @@ static int serial_open(struct tty_struct *tty, struct file *filp)
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port->RxHolding = 0;
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mydbg("%s port->RxHolding = 0\n", __func__);
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retval = qt_open(port, filp);
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retval = qt_open(tty, port, filp);
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}
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if (retval)
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@ -1112,11 +1116,12 @@ static int serial_open(struct tty_struct *tty, struct file *filp)
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/*****************************************************************************
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*device's specific driver functions
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*****************************************************************************/
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static int qt_open(struct usb_serial_port *port, struct file *filp)
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static int qt_open(struct tty_struct *tty, struct usb_serial_port *port,
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struct file *filp)
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{
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struct usb_serial *serial = port->serial;
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int result = 0;
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unsigned int UartNumber;
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unsigned int index;
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struct qt_get_device_data DeviceData;
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struct qt_open_channel_data ChannelData;
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unsigned short default_divisor = 0x30; /* gives 9600 baud rate */
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@ -1128,13 +1133,7 @@ static int qt_open(struct usb_serial_port *port, struct file *filp)
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mydbg("%s - port %d\n", __func__, port->number);
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/* force low_latency on so that our tty_push actually forces the data through,
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otherwise it is scheduled, and with high data rates (like with OHCI) data
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can get lost. */
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if (port->tty)
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port->tty->low_latency = 0;
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UartNumber = port->tty->index - serial->minor;
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index = tty->index - serial->minor;
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status = box_get_device(serial, &DeviceData);
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if (status < 0) {
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@ -1147,7 +1146,7 @@ static int qt_open(struct usb_serial_port *port, struct file *filp)
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/* Open uart channel */
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/* Port specific setups */
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status = BoxOPenCloseChannel(serial, UartNumber, 1, &ChannelData);
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status = BoxOPenCloseChannel(serial, index, 1, &ChannelData);
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if (status < 0) {
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mydbg(__FILE__ "BoxOPenCloseChannel failed\n");
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return status;
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@ -1161,7 +1160,7 @@ static int qt_open(struct usb_serial_port *port, struct file *filp)
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(SERIAL_MSR_CTS | SERIAL_MSR_DSR | SERIAL_MSR_RI | SERIAL_MSR_CD);
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/* Set Baud rate to default and turn off (default)flow control here */
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status = BoxSetUart(serial, UartNumber, default_divisor, default_LCR);
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status = BoxSetUart(serial, index, default_divisor, default_LCR);
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if (status < 0) {
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mydbg(__FILE__ "BoxSetUart failed\n");
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return status;
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@ -1169,7 +1168,7 @@ static int qt_open(struct usb_serial_port *port, struct file *filp)
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mydbg(__FILE__ "BoxSetUart completed.\n");
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/* Put this here to make it responsive to stty and defauls set by the tty layer */
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qt_set_termios(port, NULL);
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qt_set_termios(tty, port, NULL);
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/* Initialize the wait que head */
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init_waitqueue_head(&(port->wait));
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@ -1203,7 +1202,7 @@ static int qt_open(struct usb_serial_port *port, struct file *filp)
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static void serial_close(struct tty_struct *tty, struct file *filp)
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{
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struct usb_serial_port *port =
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(struct usb_serial_port *)tty->driver_data;
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tty->driver_data;
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struct usb_serial *serial = get_usb_serial(port, __func__);
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if (!serial)
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@ -1226,7 +1225,7 @@ static void serial_close(struct tty_struct *tty, struct file *filp)
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mydbg("%s - port->closePending = 1\n", __func__);
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if (serial->dev) {
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qt_close(port, filp);
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qt_close(tty, port, filp);
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port->open_count = 0;
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}
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}
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@ -1240,20 +1239,21 @@ static void serial_close(struct tty_struct *tty, struct file *filp)
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}
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static void qt_close(struct usb_serial_port *port, struct file *filp)
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static void qt_close(struct tty_struct *tty, struct usb_serial_port *port,
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struct file *filp)
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{
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unsigned long jift = jiffies + 10 * HZ;
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__u8 LSR_Value, MCR_Value;
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u8 lsr, mcr;
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struct usb_serial *serial = port->serial;
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int status;
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unsigned int UartNumber;
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unsigned int index;
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struct qt_open_channel_data ChannelData;
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status = 0;
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LSR_Value = 0;
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lsr = 0;
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mydbg("%s - port %d\n", __func__, port->number);
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UartNumber = port->tty->index - serial->minor;
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index = tty->index - serial->minor;
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/* shutdown any bulk reads that might be going on */
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if (serial->num_bulk_out)
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@ -1263,20 +1263,19 @@ static void qt_close(struct usb_serial_port *port, struct file *filp)
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/* wait up to 30 seconds for transmitter to empty */
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do {
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status = BoxGetRegister(serial, UartNumber, LINE_STATUS_REGISTER, &LSR_Value);
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status = BoxGetRegister(serial, index, LINE_STATUS_REGISTER, &lsr);
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if (status < 0) {
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mydbg(__FILE__ "box_get_device failed\n");
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break;
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}
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if ((LSR_Value & SERIAL_LSR_TEMT)
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if ((lsr & SERIAL_LSR_TEMT)
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&& (port->ReadBulkStopped == 1))
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break;
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schedule();
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}
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while (jiffies <= jift)
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;
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while (jiffies <= jift);
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if (jiffies > jift)
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mydbg("%s - port %d timout of checking transmitter empty\n",
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@ -1286,17 +1285,17 @@ static void qt_close(struct usb_serial_port *port, struct file *filp)
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__func__, port->number);
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status =
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BoxGetRegister(serial, UartNumber, MODEM_CONTROL_REGISTER,
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&MCR_Value);
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mydbg(__FILE__ "BoxGetRegister MCR = 0x%x.\n", MCR_Value);
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BoxGetRegister(serial, index, MODEM_CONTROL_REGISTER,
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&mcr);
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mydbg(__FILE__ "BoxGetRegister MCR = 0x%x.\n", mcr);
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if (status >= 0) {
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MCR_Value &= ~(SERIAL_MCR_DTR | SERIAL_MCR_RTS);
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/* status = BoxSetRegister(serial, UartNumber, MODEM_CONTROL_REGISTER, MCR_Value); */
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mcr &= ~(SERIAL_MCR_DTR | SERIAL_MCR_RTS);
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/* status = BoxSetRegister(serial, index, MODEM_CONTROL_REGISTER, mcr); */
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}
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/* Close uart channel */
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status = BoxOPenCloseChannel(serial, UartNumber, 0, &ChannelData);
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status = BoxOPenCloseChannel(serial, index, 0, &ChannelData);
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if (status < 0)
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mydbg("%s - port %d BoxOPenCloseChannel failed.\n",
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__func__, port->number);
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@ -1308,12 +1307,10 @@ static void qt_close(struct usb_serial_port *port, struct file *filp)
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static int serial_write(struct tty_struct *tty, const unsigned char *buf,
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int count)
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{
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struct usb_serial_port *port =
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(struct usb_serial_port *)tty->driver_data;
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struct usb_serial_port *port = tty->driver_data;
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struct usb_serial *serial;
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int retval = -EINVAL;
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unsigned int UartNumber;
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int from_user = 0;
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unsigned int index;
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serial = get_usb_serial(port, __func__);
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if (serial == NULL)
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@ -1321,7 +1318,7 @@ static int serial_write(struct tty_struct *tty, const unsigned char *buf,
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/* This can happen if we get disconnected a */
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if (port->open_count == 0)
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return -ENODEV;
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UartNumber = port->tty->index - serial->minor;
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index = tty->index - serial->minor;
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mydbg("%s - port %d, %d byte(s)\n", __func__, port->number, count);
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mydbg("%s - port->RxHolding = %d\n", __func__, port->RxHolding);
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@ -1331,19 +1328,19 @@ static int serial_write(struct tty_struct *tty, const unsigned char *buf,
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goto exit;
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}
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retval = qt_write(port, from_user, buf, count);
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retval = qt_write(tty, port, buf, count);
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exit:
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return retval;
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}
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static int qt_write(struct usb_serial_port *port, int from_user,
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const unsigned char *buf, int count)
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static int qt_write(struct tty_struct *tty, struct usb_serial_port *port,
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const unsigned char *buf, int count)
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{
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int result;
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unsigned int UartNumber;
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unsigned int index;
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struct usb_serial *serial = get_usb_serial(port, __func__);
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if (serial == NULL)
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return -ENODEV;
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@ -1354,7 +1351,7 @@ static int qt_write(struct usb_serial_port *port, int from_user,
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return 0;
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}
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UartNumber = port->tty->index - serial->minor;
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index = tty->index - serial->minor;
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/* only do something if we have a bulk out endpoint */
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if (serial->num_bulk_out) {
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if (port->write_urb->status == -EINPROGRESS) {
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@ -1364,14 +1361,7 @@ static int qt_write(struct usb_serial_port *port, int from_user,
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count =
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(count > port->bulk_out_size) ? port->bulk_out_size : count;
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if (from_user) {
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if (copy_from_user
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(port->write_urb->transfer_buffer, buf, count))
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return -EFAULT;
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} else {
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memcpy(port->write_urb->transfer_buffer, buf, count);
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}
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memcpy(port->write_urb->transfer_buffer, buf, count);
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/* usb_serial_debug_data(__FILE__, __func__, count, port->write_urb->transfer_buffer); */
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@ -1449,8 +1439,7 @@ static void port_softint(struct work_struct *work)
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}
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static int serial_write_room(struct tty_struct *tty)
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{
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struct usb_serial_port *port =
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(struct usb_serial_port *)tty->driver_data;
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struct usb_serial_port *port = tty->driver_data;
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struct usb_serial *serial = get_usb_serial(port, __func__);
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int retval = -EINVAL;
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@ -1493,8 +1482,7 @@ static int qt_write_room(struct usb_serial_port *port)
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}
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static int serial_chars_in_buffer(struct tty_struct *tty)
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{
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struct usb_serial_port *port =
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(struct usb_serial_port *)tty->driver_data;
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struct usb_serial_port *port = tty->driver_data;
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struct usb_serial *serial = get_usb_serial(port, __func__);
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int retval = -EINVAL;
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@ -1537,17 +1525,16 @@ static int serial_tiocmset(struct tty_struct *tty, struct file *file,
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unsigned int set, unsigned int clear)
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{
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struct usb_serial_port *port =
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(struct usb_serial_port *)tty->driver_data;
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struct usb_serial_port *port = tty->driver_data;
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struct usb_serial *serial = get_usb_serial(port, __func__);
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int retval = -ENODEV;
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unsigned int UartNumber;
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unsigned int index;
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mydbg("In %s \n", __func__);
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if (!serial)
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return -ENODEV;
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UartNumber = port->tty->index - serial->minor;
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index = tty->index - serial->minor;
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down(&port->sem);
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@ -1559,22 +1546,22 @@ static int serial_tiocmset(struct tty_struct *tty, struct file *file,
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goto exit;
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}
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retval = qt_tiocmset(port, file, set);
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retval = qt_tiocmset(tty, port, file, set);
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exit:
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up(&port->sem);
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return retval;
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}
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static int qt_tiocmset(struct usb_serial_port *port, struct file *file,
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unsigned int value)
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static int qt_tiocmset(struct tty_struct *tty, struct usb_serial_port *port,
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struct file *file, unsigned int value)
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{
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__u8 MCR_Value;
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u8 mcr;
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int status;
|
||||
unsigned int UartNumber;
|
||||
|
||||
unsigned int index;
|
||||
struct usb_serial *serial = get_usb_serial(port, __func__);
|
||||
|
||||
if (serial == NULL)
|
||||
return -ENODEV;
|
||||
|
||||
|
|
@ -1583,10 +1570,10 @@ static int qt_tiocmset(struct usb_serial_port *port, struct file *file,
|
|||
/**************************************************************************************/
|
||||
/** TIOCMGET
|
||||
*/
|
||||
UartNumber = port->tty->index - serial->minor;
|
||||
index = tty->index - serial->minor;
|
||||
status =
|
||||
BoxGetRegister(port->serial, UartNumber, MODEM_CONTROL_REGISTER,
|
||||
&MCR_Value);
|
||||
BoxGetRegister(port->serial, index, MODEM_CONTROL_REGISTER,
|
||||
&mcr);
|
||||
if (status < 0)
|
||||
return -ESPIPE;
|
||||
|
||||
|
|
@ -1594,17 +1581,17 @@ static int qt_tiocmset(struct usb_serial_port *port, struct file *file,
|
|||
* Turn off the RTS and DTR and loopbcck and then only turn on what was
|
||||
* asked for
|
||||
*/
|
||||
MCR_Value &= ~(SERIAL_MCR_RTS | SERIAL_MCR_DTR | SERIAL_MCR_LOOP);
|
||||
mcr &= ~(SERIAL_MCR_RTS | SERIAL_MCR_DTR | SERIAL_MCR_LOOP);
|
||||
if (value & TIOCM_RTS)
|
||||
MCR_Value |= SERIAL_MCR_RTS;
|
||||
mcr |= SERIAL_MCR_RTS;
|
||||
if (value & TIOCM_DTR)
|
||||
MCR_Value |= SERIAL_MCR_DTR;
|
||||
mcr |= SERIAL_MCR_DTR;
|
||||
if (value & TIOCM_LOOP)
|
||||
MCR_Value |= SERIAL_MCR_LOOP;
|
||||
mcr |= SERIAL_MCR_LOOP;
|
||||
|
||||
status =
|
||||
BoxSetRegister(port->serial, UartNumber, MODEM_CONTROL_REGISTER,
|
||||
MCR_Value);
|
||||
BoxSetRegister(port->serial, index, MODEM_CONTROL_REGISTER,
|
||||
mcr);
|
||||
if (status < 0)
|
||||
return -ESPIPE;
|
||||
else
|
||||
|
|
@ -1614,18 +1601,16 @@ static int qt_tiocmset(struct usb_serial_port *port, struct file *file,
|
|||
static int serial_tiocmget(struct tty_struct *tty, struct file *file)
|
||||
{
|
||||
|
||||
struct usb_serial_port *port =
|
||||
(struct usb_serial_port *)tty->driver_data;
|
||||
|
||||
struct usb_serial_port *port = tty->driver_data;
|
||||
struct usb_serial *serial = get_usb_serial(port, __func__);
|
||||
int retval = -ENODEV;
|
||||
unsigned int UartNumber;
|
||||
unsigned int index;
|
||||
mydbg("In %s \n", __func__);
|
||||
|
||||
if (!serial)
|
||||
return -ENODEV;
|
||||
|
||||
UartNumber = port->tty->index - serial->minor;
|
||||
index = tty->index - serial->minor;
|
||||
|
||||
down(&port->sem);
|
||||
|
||||
|
|
@ -1637,56 +1622,55 @@ static int serial_tiocmget(struct tty_struct *tty, struct file *file)
|
|||
goto exit;
|
||||
}
|
||||
|
||||
retval = qt_tiocmget(port, file);
|
||||
retval = qt_tiocmget(tty, port, file);
|
||||
|
||||
exit:
|
||||
up(&port->sem);
|
||||
return retval;
|
||||
}
|
||||
|
||||
static int qt_tiocmget(struct usb_serial_port *port, struct file *file)
|
||||
static int qt_tiocmget(struct tty_struct *tty,
|
||||
struct usb_serial_port *port, struct file *file)
|
||||
{
|
||||
|
||||
__u8 MCR_Value;
|
||||
__u8 MSR_Value;
|
||||
u8 mcr;
|
||||
u8 msr;
|
||||
unsigned int result = 0;
|
||||
int status;
|
||||
unsigned int UartNumber;
|
||||
struct tty_struct *tty;
|
||||
unsigned int index;
|
||||
|
||||
struct usb_serial *serial = get_usb_serial(port, __func__);
|
||||
if (serial == NULL)
|
||||
return -ENODEV;
|
||||
tty = port->tty;
|
||||
|
||||
mydbg("%s - port %d, tty =0x%p\n", __func__, port->number, tty);
|
||||
|
||||
/**************************************************************************************/
|
||||
/** TIOCMGET
|
||||
*/
|
||||
UartNumber = port->tty->index - serial->minor;
|
||||
index = tty->index - serial->minor;
|
||||
status =
|
||||
BoxGetRegister(port->serial, UartNumber, MODEM_CONTROL_REGISTER,
|
||||
&MCR_Value);
|
||||
BoxGetRegister(port->serial, index, MODEM_CONTROL_REGISTER,
|
||||
&mcr);
|
||||
if (status >= 0) {
|
||||
status =
|
||||
BoxGetRegister(port->serial, UartNumber,
|
||||
MODEM_STATUS_REGISTER, &MSR_Value);
|
||||
BoxGetRegister(port->serial, index,
|
||||
MODEM_STATUS_REGISTER, &msr);
|
||||
|
||||
}
|
||||
|
||||
if (status >= 0) {
|
||||
result = ((MCR_Value & SERIAL_MCR_DTR) ? TIOCM_DTR : 0)
|
||||
result = ((mcr & SERIAL_MCR_DTR) ? TIOCM_DTR : 0)
|
||||
/* DTR IS SET */
|
||||
| ((MCR_Value & SERIAL_MCR_RTS) ? TIOCM_RTS : 0)
|
||||
| ((mcr & SERIAL_MCR_RTS) ? TIOCM_RTS : 0)
|
||||
/* RTS IS SET */
|
||||
| ((MSR_Value & SERIAL_MSR_CTS) ? TIOCM_CTS : 0)
|
||||
| ((msr & SERIAL_MSR_CTS) ? TIOCM_CTS : 0)
|
||||
/* CTS is set */
|
||||
| ((MSR_Value & SERIAL_MSR_CD) ? TIOCM_CAR : 0)
|
||||
| ((msr & SERIAL_MSR_CD) ? TIOCM_CAR : 0)
|
||||
/* Carrier detect is set */
|
||||
| ((MSR_Value & SERIAL_MSR_RI) ? TIOCM_RI : 0)
|
||||
| ((msr & SERIAL_MSR_RI) ? TIOCM_RI : 0)
|
||||
/* Ring indicator set */
|
||||
| ((MSR_Value & SERIAL_MSR_DSR) ? TIOCM_DSR : 0);
|
||||
| ((msr & SERIAL_MSR_DSR) ? TIOCM_DSR : 0);
|
||||
/* DSR is set */
|
||||
return result;
|
||||
|
||||
|
|
@ -1698,17 +1682,16 @@ static int serial_ioctl(struct tty_struct *tty, struct file *file,
|
|||
unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
|
||||
struct usb_serial_port *port =
|
||||
(struct usb_serial_port *)tty->driver_data;
|
||||
struct usb_serial_port *port = tty->driver_data;
|
||||
struct usb_serial *serial = get_usb_serial(port, __func__);
|
||||
int retval = -ENODEV;
|
||||
unsigned int UartNumber;
|
||||
unsigned int index;
|
||||
mydbg("In %s \n", __func__);
|
||||
|
||||
if (!serial)
|
||||
return -ENODEV;
|
||||
|
||||
UartNumber = port->tty->index - serial->minor;
|
||||
index = tty->index - serial->minor;
|
||||
|
||||
down(&port->sem);
|
||||
|
||||
|
|
@ -1720,125 +1703,34 @@ static int serial_ioctl(struct tty_struct *tty, struct file *file,
|
|||
goto exit;
|
||||
}
|
||||
|
||||
retval = qt_ioctl(port, file, cmd, arg);
|
||||
retval = qt_ioctl(tty, port, file, cmd, arg);
|
||||
|
||||
exit:
|
||||
up(&port->sem);
|
||||
return retval;
|
||||
}
|
||||
static int qt_ioctl(struct usb_serial_port *port, struct file *file,
|
||||
unsigned int cmd, unsigned long arg)
|
||||
static int qt_ioctl(struct tty_struct *tty, struct usb_serial_port *port,
|
||||
struct file *file, unsigned int cmd, unsigned long arg)
|
||||
{
|
||||
__u8 MCR_Value;
|
||||
__u8 MSR_Value;
|
||||
unsigned short Prev_MSR_Value;
|
||||
__u8 mcr;
|
||||
__u8 msr;
|
||||
unsigned short prev_msr;
|
||||
unsigned int value, result = 0;
|
||||
int status;
|
||||
unsigned int UartNumber;
|
||||
struct tty_struct *tty;
|
||||
unsigned int index;
|
||||
|
||||
struct usb_serial *serial = get_usb_serial(port, __func__);
|
||||
if (serial == NULL)
|
||||
return -ENODEV;
|
||||
tty = port->tty;
|
||||
|
||||
mydbg("%s - port %d, tty =0x%p\n", __func__, port->number, tty);
|
||||
|
||||
/* TIOCMGET */
|
||||
UartNumber = port->tty->index - serial->minor;
|
||||
|
||||
if (cmd == TIOCMGET) {
|
||||
MCR_Value = port->shadowMCR;
|
||||
MSR_Value = port->shadowMSR;
|
||||
|
||||
{
|
||||
result = ((MCR_Value & SERIAL_MCR_DTR) ? TIOCM_DTR : 0)
|
||||
/* DTR IS SET */
|
||||
| ((MCR_Value & SERIAL_MCR_RTS) ? TIOCM_RTS : 0)
|
||||
/* RTS IS SET */
|
||||
| ((MSR_Value & SERIAL_MSR_CTS) ? TIOCM_CTS : 0)
|
||||
/* CTS is set */
|
||||
| ((MSR_Value & SERIAL_MSR_CD) ? TIOCM_CAR : 0)
|
||||
/* Carrier detect is set */
|
||||
| ((MSR_Value & SERIAL_MSR_RI) ? TIOCM_RI : 0)
|
||||
/* Ring indicator set */
|
||||
| ((MSR_Value & SERIAL_MSR_DSR) ? TIOCM_DSR : 0);
|
||||
/* DSR is set */
|
||||
if (copy_to_user
|
||||
((unsigned int *)arg, &result,
|
||||
sizeof(unsigned int)))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
|
||||
}
|
||||
}
|
||||
|
||||
/* TIOCMBIS, TIOCMBIC, AND TIOCMSET */
|
||||
if (cmd == TIOCMBIS || cmd == TIOCMBIC || cmd == TIOCMSET) {
|
||||
status =
|
||||
BoxGetRegister(port->serial, UartNumber,
|
||||
MODEM_CONTROL_REGISTER, &MCR_Value);
|
||||
if (status < 0)
|
||||
return -ESPIPE;
|
||||
if (copy_from_user
|
||||
(&value, (unsigned int *)arg, sizeof(unsigned int)))
|
||||
return -EFAULT;
|
||||
|
||||
switch (cmd) {
|
||||
case TIOCMBIS:
|
||||
if (value & TIOCM_RTS)
|
||||
MCR_Value |= SERIAL_MCR_RTS;
|
||||
if (value & TIOCM_DTR)
|
||||
MCR_Value |= SERIAL_MCR_DTR;
|
||||
if (value & TIOCM_LOOP)
|
||||
MCR_Value |= SERIAL_MCR_LOOP;
|
||||
break;
|
||||
case TIOCMBIC:
|
||||
if (value & TIOCM_RTS)
|
||||
MCR_Value &= ~SERIAL_MCR_RTS;
|
||||
if (value & TIOCM_DTR)
|
||||
MCR_Value &= ~SERIAL_MCR_DTR;
|
||||
if (value & TIOCM_LOOP)
|
||||
MCR_Value &= ~SERIAL_MCR_LOOP;
|
||||
break;
|
||||
case TIOCMSET:
|
||||
/*
|
||||
* Turn off the RTS and DTR and loopbcck and then only
|
||||
* turn on what was asked for
|
||||
*/
|
||||
MCR_Value &=
|
||||
~(SERIAL_MCR_RTS | SERIAL_MCR_DTR |
|
||||
SERIAL_MCR_LOOP);
|
||||
if (value & TIOCM_RTS)
|
||||
MCR_Value |= SERIAL_MCR_RTS;
|
||||
if (value & TIOCM_DTR)
|
||||
MCR_Value |= SERIAL_MCR_DTR;
|
||||
if (value & TIOCM_LOOP)
|
||||
MCR_Value |= SERIAL_MCR_LOOP;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
|
||||
}
|
||||
status =
|
||||
BoxSetRegister(port->serial, UartNumber,
|
||||
MODEM_CONTROL_REGISTER, MCR_Value);
|
||||
if (status < 0)
|
||||
return -ESPIPE;
|
||||
else {
|
||||
port->shadowMCR = MCR_Value;
|
||||
return 0;
|
||||
}
|
||||
|
||||
}
|
||||
/**************************************************************************************/
|
||||
/** TIOCMBIS, TIOCMBIC, AND TIOCMSET end
|
||||
*/
|
||||
/**************************************************************************************/
|
||||
index = tty->index - serial->minor;
|
||||
|
||||
if (cmd == TIOCMIWAIT) {
|
||||
DECLARE_WAITQUEUE(wait, current);
|
||||
Prev_MSR_Value = port->shadowMSR & SERIAL_MSR_MASK;
|
||||
prev_msr = port->shadowMSR & SERIAL_MSR_MASK;
|
||||
while (1) {
|
||||
add_wait_queue(&port->wait, &wait);
|
||||
set_current_state(TASK_INTERRUPTIBLE);
|
||||
|
|
@ -1847,22 +1739,22 @@ static int qt_ioctl(struct usb_serial_port *port, struct file *file,
|
|||
/* see if a signal woke us up */
|
||||
if (signal_pending(current))
|
||||
return -ERESTARTSYS;
|
||||
MSR_Value = port->shadowMSR & SERIAL_MSR_MASK;
|
||||
if (MSR_Value == Prev_MSR_Value)
|
||||
msr = port->shadowMSR & SERIAL_MSR_MASK;
|
||||
if (msr == prev_msr)
|
||||
return -EIO; /* no change error */
|
||||
|
||||
if ((arg & TIOCM_RNG
|
||||
&& ((Prev_MSR_Value & SERIAL_MSR_RI) ==
|
||||
(MSR_Value & SERIAL_MSR_RI)))
|
||||
&& ((prev_msr & SERIAL_MSR_RI) ==
|
||||
(msr & SERIAL_MSR_RI)))
|
||||
|| (arg & TIOCM_DSR
|
||||
&& ((Prev_MSR_Value & SERIAL_MSR_DSR) ==
|
||||
(MSR_Value & SERIAL_MSR_DSR)))
|
||||
&& ((prev_msr & SERIAL_MSR_DSR) ==
|
||||
(msr & SERIAL_MSR_DSR)))
|
||||
|| (arg & TIOCM_CD
|
||||
&& ((Prev_MSR_Value & SERIAL_MSR_CD) ==
|
||||
(MSR_Value & SERIAL_MSR_CD)))
|
||||
&& ((prev_msr & SERIAL_MSR_CD) ==
|
||||
(msr & SERIAL_MSR_CD)))
|
||||
|| (arg & TIOCM_CTS
|
||||
&& ((Prev_MSR_Value & SERIAL_MSR_CTS) ==
|
||||
(MSR_Value & SERIAL_MSR_CTS)))) {
|
||||
&& ((prev_msr & SERIAL_MSR_CTS) ==
|
||||
(msr & SERIAL_MSR_CTS)))) {
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -1878,7 +1770,7 @@ static int qt_ioctl(struct usb_serial_port *port, struct file *file,
|
|||
static void serial_set_termios(struct tty_struct *tty, struct ktermios *old)
|
||||
{
|
||||
struct usb_serial_port *port =
|
||||
(struct usb_serial_port *)tty->driver_data;
|
||||
tty->driver_data;
|
||||
struct usb_serial *serial = get_usb_serial(port, __func__);
|
||||
|
||||
if (!serial)
|
||||
|
|
@ -1894,22 +1786,22 @@ static void serial_set_termios(struct tty_struct *tty, struct ktermios *old)
|
|||
}
|
||||
|
||||
/* pass on to the driver specific version of this function if it is available */
|
||||
qt_set_termios(port, old);
|
||||
qt_set_termios(tty, port, old);
|
||||
|
||||
exit:
|
||||
up(&port->sem);
|
||||
}
|
||||
|
||||
static void qt_set_termios(struct usb_serial_port *port,
|
||||
static void qt_set_termios(struct tty_struct *tty,
|
||||
struct usb_serial_port *port,
|
||||
struct ktermios *old_termios)
|
||||
{
|
||||
unsigned int cflag;
|
||||
int baud, divisor, remainder;
|
||||
unsigned char LCR_change_to = 0;
|
||||
struct tty_struct *tty;
|
||||
unsigned char new_LCR = 0;
|
||||
int status;
|
||||
struct usb_serial *serial;
|
||||
__u16 UartNumber;
|
||||
__u16 index;
|
||||
__u16 tmp, tmp2;
|
||||
|
||||
mydbg("%s - port %d\n", __func__, port->number);
|
||||
|
|
@ -1921,59 +1813,46 @@ static void qt_set_termios(struct usb_serial_port *port,
|
|||
tmp2 = serial->minor;
|
||||
mydbg("%s - serial->minor = %d\n", __func__, tmp2);
|
||||
|
||||
UartNumber = port->tty->index - serial->minor;
|
||||
|
||||
tty = port->tty;
|
||||
index = port->tty->index - serial->minor;
|
||||
|
||||
cflag = tty->termios->c_cflag;
|
||||
|
||||
if (old_termios) {
|
||||
if ((cflag == old_termios->c_cflag)
|
||||
&& (RELEVANT_IFLAG(tty->termios->c_iflag) ==
|
||||
RELEVANT_IFLAG(old_termios->c_iflag))) {
|
||||
mydbg("%s - Nothing to change\n", __func__);
|
||||
return;
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
mydbg("%s - 3\n", __func__);
|
||||
|
||||
switch (cflag) {
|
||||
case CS5:
|
||||
LCR_change_to |= SERIAL_5_DATA;
|
||||
new_LCR |= SERIAL_5_DATA;
|
||||
break;
|
||||
case CS6:
|
||||
LCR_change_to |= SERIAL_6_DATA;
|
||||
new_LCR |= SERIAL_6_DATA;
|
||||
break;
|
||||
case CS7:
|
||||
LCR_change_to |= SERIAL_7_DATA;
|
||||
new_LCR |= SERIAL_7_DATA;
|
||||
break;
|
||||
default:
|
||||
case CS8:
|
||||
LCR_change_to |= SERIAL_8_DATA;
|
||||
new_LCR |= SERIAL_8_DATA;
|
||||
break;
|
||||
}
|
||||
|
||||
/* Parity stuff */
|
||||
if (cflag & PARENB) {
|
||||
if (cflag & PARODD)
|
||||
LCR_change_to |= SERIAL_ODD_PARITY;
|
||||
new_LCR |= SERIAL_ODD_PARITY;
|
||||
else
|
||||
LCR_change_to |= SERIAL_EVEN_PARITY;
|
||||
new_LCR |= SERIAL_EVEN_PARITY;
|
||||
}
|
||||
if (cflag & CSTOPB)
|
||||
LCR_change_to |= SERIAL_TWO_STOPB;
|
||||
new_LCR |= SERIAL_TWO_STOPB;
|
||||
else
|
||||
LCR_change_to |= SERIAL_TWO_STOPB;
|
||||
new_LCR |= SERIAL_TWO_STOPB;
|
||||
|
||||
mydbg("%s - 4\n", __func__);
|
||||
/* Thats the LCR stuff, go ahead and set it */
|
||||
baud = tty_get_baud_rate(tty);
|
||||
if (!baud) {
|
||||
if (!baud)
|
||||
/* pick a default, any default... */
|
||||
baud = 9600;
|
||||
}
|
||||
|
||||
mydbg("%s - got baud = %d\n", __func__, baud);
|
||||
|
||||
|
|
@ -1986,9 +1865,7 @@ static void qt_set_termios(struct usb_serial_port *port,
|
|||
/*
|
||||
* Set Baud rate to default and turn off (default)flow control here
|
||||
*/
|
||||
status =
|
||||
BoxSetUart(serial, UartNumber, (unsigned short)divisor,
|
||||
LCR_change_to);
|
||||
status = BoxSetUart(serial, index, (unsigned short)divisor, new_LCR);
|
||||
if (status < 0) {
|
||||
mydbg(__FILE__ "BoxSetUart failed\n");
|
||||
return;
|
||||
|
|
@ -2000,7 +1877,7 @@ static void qt_set_termios(struct usb_serial_port *port,
|
|||
port->number);
|
||||
|
||||
/* Enable RTS/CTS flow control */
|
||||
status = BoxSetHW_FlowCtrl(serial, UartNumber, 1);
|
||||
status = BoxSetHW_FlowCtrl(serial, index, 1);
|
||||
|
||||
if (status < 0) {
|
||||
mydbg(__FILE__ "BoxSetHW_FlowCtrl failed\n");
|
||||
|
|
@ -2011,7 +1888,7 @@ static void qt_set_termios(struct usb_serial_port *port,
|
|||
mydbg("%s - disabling HW flow control port %d\n", __func__,
|
||||
port->number);
|
||||
|
||||
status = BoxSetHW_FlowCtrl(serial, UartNumber, 0);
|
||||
status = BoxSetHW_FlowCtrl(serial, index, 0);
|
||||
if (status < 0) {
|
||||
mydbg(__FILE__ "BoxSetHW_FlowCtrl failed\n");
|
||||
return;
|
||||
|
|
@ -2025,19 +1902,20 @@ static void qt_set_termios(struct usb_serial_port *port,
|
|||
unsigned char stop_char = STOP_CHAR(tty);
|
||||
unsigned char start_char = START_CHAR(tty);
|
||||
status =
|
||||
BoxSetSW_FlowCtrl(serial, UartNumber, stop_char,
|
||||
BoxSetSW_FlowCtrl(serial, index, stop_char,
|
||||
start_char);
|
||||
if (status < 0)
|
||||
mydbg(__FILE__ "BoxSetSW_FlowCtrl (enabled) failed\n");
|
||||
|
||||
} else {
|
||||
/* disable SW flow control */
|
||||
status = BoxDisable_SW_FlowCtrl(serial, UartNumber);
|
||||
status = BoxDisable_SW_FlowCtrl(serial, index);
|
||||
if (status < 0)
|
||||
mydbg(__FILE__ "BoxSetSW_FlowCtrl (diabling) failed\n");
|
||||
|
||||
}
|
||||
|
||||
tty->termios->c_cflag &= ~CMSPAR;
|
||||
/* FIXME: Error cases should be returning the actual bits changed only */
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
|
|
@ -2237,11 +2115,11 @@ static int BoxSetUart(struct usb_serial *serial, unsigned short Uart_Number,
|
|||
return result;
|
||||
}
|
||||
|
||||
static int BoxSetHW_FlowCtrl(struct usb_serial *serial, unsigned int UartNumber,
|
||||
static int BoxSetHW_FlowCtrl(struct usb_serial *serial, unsigned int index,
|
||||
int bSet)
|
||||
{
|
||||
__u8 MCR_Value = 0;
|
||||
__u8 MSR_Value = 0, MOUT_Value = 0;
|
||||
__u8 mcr = 0;
|
||||
__u8 msr = 0, MOUT_Value = 0;
|
||||
struct usb_serial_port *port;
|
||||
unsigned int status;
|
||||
|
||||
|
|
@ -2249,34 +2127,34 @@ static int BoxSetHW_FlowCtrl(struct usb_serial *serial, unsigned int UartNumber,
|
|||
|
||||
if (bSet == 1) {
|
||||
/* flow control, box will clear RTS line to prevent remote */
|
||||
MCR_Value = SERIAL_MCR_RTS;
|
||||
mcr = SERIAL_MCR_RTS;
|
||||
} /* device from xmitting more chars */
|
||||
else {
|
||||
/* no flow control to remote device */
|
||||
MCR_Value = 0;
|
||||
mcr = 0;
|
||||
|
||||
}
|
||||
MOUT_Value = MCR_Value << 8;
|
||||
MOUT_Value = mcr << 8;
|
||||
|
||||
if (bSet == 1) {
|
||||
/* flow control, box will inhibit xmit data if CTS line is
|
||||
* asserted */
|
||||
MSR_Value = SERIAL_MSR_CTS;
|
||||
msr = SERIAL_MSR_CTS;
|
||||
} else {
|
||||
/* Box will not inhimbe xmit data due to CTS line */
|
||||
MSR_Value = 0;
|
||||
msr = 0;
|
||||
}
|
||||
MOUT_Value |= MSR_Value;
|
||||
MOUT_Value |= msr;
|
||||
|
||||
status =
|
||||
usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
||||
QT_HW_FLOW_CONTROL_MASK, 0x40, MOUT_Value,
|
||||
UartNumber, NULL, 0, 300);
|
||||
index, NULL, 0, 300);
|
||||
return status;
|
||||
|
||||
}
|
||||
|
||||
static int BoxSetSW_FlowCtrl(struct usb_serial *serial, __u16 UartNumber,
|
||||
static int BoxSetSW_FlowCtrl(struct usb_serial *serial, __u16 index,
|
||||
unsigned char stop_char, unsigned char start_char)
|
||||
{
|
||||
__u16 nSWflowout;
|
||||
|
|
@ -2288,17 +2166,17 @@ static int BoxSetSW_FlowCtrl(struct usb_serial *serial, __u16 UartNumber,
|
|||
result =
|
||||
usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
||||
QT_SW_FLOW_CONTROL_MASK, 0x40, nSWflowout,
|
||||
UartNumber, NULL, 0, 300);
|
||||
index, NULL, 0, 300);
|
||||
return result;
|
||||
|
||||
}
|
||||
static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 UartNumber)
|
||||
static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 index)
|
||||
{
|
||||
int result;
|
||||
|
||||
result =
|
||||
usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
||||
QT_SW_FLOW_CONTROL_DISABLE, 0x40, 0, UartNumber,
|
||||
QT_SW_FLOW_CONTROL_DISABLE, 0x40, 0, index,
|
||||
NULL, 0, 300);
|
||||
return result;
|
||||
|
||||
|
|
@ -2307,7 +2185,7 @@ static int BoxDisable_SW_FlowCtrl(struct usb_serial *serial, __u16 UartNumber)
|
|||
static void serial_throttle(struct tty_struct *tty)
|
||||
{
|
||||
struct usb_serial_port *port =
|
||||
(struct usb_serial_port *)tty->driver_data;
|
||||
tty->driver_data;
|
||||
struct usb_serial *serial = get_usb_serial(port, __func__);
|
||||
mydbg("%s - port %d\n", __func__, port->number);
|
||||
|
||||
|
|
@ -2334,7 +2212,7 @@ static void serial_throttle(struct tty_struct *tty)
|
|||
static void serial_unthrottle(struct tty_struct *tty)
|
||||
{
|
||||
struct usb_serial_port *port =
|
||||
(struct usb_serial_port *)tty->driver_data;
|
||||
tty->driver_data;
|
||||
struct usb_serial *serial = get_usb_serial(port, __func__);
|
||||
unsigned int result;
|
||||
|
||||
|
|
@ -2380,20 +2258,19 @@ static void serial_unthrottle(struct tty_struct *tty)
|
|||
|
||||
static int serial_break(struct tty_struct *tty, int break_state)
|
||||
{
|
||||
struct usb_serial_port *port =
|
||||
(struct usb_serial_port *)tty->driver_data;
|
||||
struct usb_serial_port *port = tty->driver_data;
|
||||
struct usb_serial *serial = get_usb_serial(port, __func__);
|
||||
__u16 UartNumber, Break_Value;
|
||||
u16 index, onoff;
|
||||
unsigned int result;
|
||||
|
||||
UartNumber = port->tty->index - serial->minor;
|
||||
index = tty->index - serial->minor;
|
||||
if (!serial)
|
||||
return -ENODEV;
|
||||
|
||||
if (break_state == -1)
|
||||
Break_Value = 1;
|
||||
onoff = 1;
|
||||
else
|
||||
Break_Value = 0;
|
||||
onoff = 0;
|
||||
|
||||
down(&port->sem);
|
||||
|
||||
|
|
@ -2406,7 +2283,7 @@ static int serial_break(struct tty_struct *tty, int break_state)
|
|||
|
||||
result =
|
||||
usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0),
|
||||
QT_BREAK_CONTROL, 0x40, Break_Value, UartNumber,
|
||||
QT_BREAK_CONTROL, 0x40, onoff, index,
|
||||
NULL, 0, 300);
|
||||
|
||||
exit:
|
||||
|
|
|
|||
Loading…
Reference in New Issue