USB-serial updates for 5.2-rc1
Here are the USB-serial updates for 5.2-rc1, including: - flow-control related fixes for pl2303 - fix for an initial-termios issue - fix for a couple of unthrottle() races - fix for f81232 interrupt-handling issues - improved f81232 overrun handling - support for higher f81232 line speeds - support for f81232 break control Included are also various clean ups. All but the last four commits have been in linux-next and with no reported issues. Signed-off-by: Johan Hovold <johan@kernel.org> -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQQHbPq+cpGvN/peuzMLxc3C7H1lCAUCXMxfIgAKCRALxc3C7H1l CMtcAP9uZf9T10gph5fEFVmMeL5TbXF/jdi0ovK6Yl2hwlcJvwEAi/iL8pjNEmdk Bjy9ocYKsGixXqKi9b5+OEB39QFsZwI= =LovK -----END PGP SIGNATURE----- Merge tag 'usb-serial-5.2-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-next Johan writes: USB-serial updates for 5.2-rc1 Here are the USB-serial updates for 5.2-rc1, including: - flow-control related fixes for pl2303 - fix for an initial-termios issue - fix for a couple of unthrottle() races - fix for f81232 interrupt-handling issues - improved f81232 overrun handling - support for higher f81232 line speeds - support for f81232 break control Included are also various clean ups. All but the last four commits have been in linux-next and with no reported issues. Signed-off-by: Johan Hovold <johan@kernel.org> * tag 'usb-serial-5.2-rc1' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial: (22 commits) USB: serial: f81232: implement break control USB: serial: f81232: add high baud rate support USB: serial: f81232: clear overrun flag USB: serial: f81232: fix interrupt worker not stop USB: serial: io_edgeport: fix up switch fall-through comments USB: serial: drop unused iflag macro USB: serial: drop unnecessary goto USB: serial: clean up throttle handling USB: serial: fix unthrottle races USB: serial: spcp8x5: simplify init_termios USB: serial: oti6858: simplify init_termios USB: serial: iuu_phoenix: simplify init_termios USB: serial: iuu_phoenix: drop bogus initial cflag USB: serial: cypress_m8: clean up initial-termios handling USB: serial: cypress_m8: drop unused termios USB: serial: cypress_m8: drop unused driver data flag USB: serial: ark3116: drop redundant init_termios USB: serial: fix initial-termios handling USB: serial: digi_acceleport: clean up set_termios USB: serial: digi_acceleport: clean up modem-control handling ...hifive-unleashed-5.2
Greg Kroah-Hartman
commit
6f6a407a59
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@ -189,16 +189,6 @@ static int ark3116_port_remove(struct usb_serial_port *port)
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return 0;
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}
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static void ark3116_init_termios(struct tty_struct *tty)
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{
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struct ktermios *termios = &tty->termios;
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*termios = tty_std_termios;
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termios->c_cflag = B9600 | CS8
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| CREAD | HUPCL | CLOCAL;
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termios->c_ispeed = 9600;
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termios->c_ospeed = 9600;
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}
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static void ark3116_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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@ -645,7 +635,6 @@ static struct usb_serial_driver ark3116_device = {
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.port_probe = ark3116_port_probe,
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.port_remove = ark3116_port_remove,
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.set_termios = ark3116_set_termios,
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.init_termios = ark3116_init_termios,
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.get_serial = ark3116_get_serial_info,
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.tiocmget = ark3116_tiocmget,
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.tiocmset = ark3116_tiocmset,
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@ -98,7 +98,6 @@ struct cypress_private {
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int write_urb_interval; /* interval to use for write urb */
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int read_urb_interval; /* interval to use for read urb */
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int comm_is_ok; /* true if communication is (still) ok */
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int termios_initialized;
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__u8 line_control; /* holds dtr / rts value */
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__u8 current_status; /* received from last read - info on dsr,cts,cd,ri,etc */
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__u8 current_config; /* stores the current configuration byte */
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@ -107,11 +106,7 @@ struct cypress_private {
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int get_cfg_unsafe; /* If true, the CYPRESS_GET_CONFIG is unsafe */
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int baud_rate; /* stores current baud rate in
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integer form */
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int isthrottled; /* if throttled, discard reads */
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char prev_status; /* used for TIOCMIWAIT */
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/* we pass a pointer to this as the argument sent to
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cypress_set_termios old_termios */
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struct ktermios tmp_termios; /* stores the old termios settings */
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};
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/* function prototypes for the Cypress USB to serial device */
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@ -126,6 +121,7 @@ static int cypress_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 cypress_send(struct usb_serial_port *port);
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static int cypress_write_room(struct tty_struct *tty);
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static void cypress_earthmate_init_termios(struct tty_struct *tty);
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static void cypress_set_termios(struct tty_struct *tty,
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struct usb_serial_port *port, struct ktermios *old);
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static int cypress_tiocmget(struct tty_struct *tty);
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@ -153,6 +149,7 @@ static struct usb_serial_driver cypress_earthmate_device = {
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.dtr_rts = cypress_dtr_rts,
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.write = cypress_write,
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.write_room = cypress_write_room,
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.init_termios = cypress_earthmate_init_termios,
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.set_termios = cypress_set_termios,
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.tiocmget = cypress_tiocmget,
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.tiocmset = cypress_tiocmset,
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@ -467,7 +464,6 @@ static int cypress_generic_port_probe(struct usb_serial_port *port)
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priv->cmd_ctrl = 0;
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priv->line_control = 0;
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priv->termios_initialized = 0;
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priv->rx_flags = 0;
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/* Default packet format setting is determined by packet size.
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Anything with a size larger then 9 must have a separate
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@ -604,7 +600,7 @@ static int cypress_open(struct tty_struct *tty, struct usb_serial_port *port)
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cypress_send(port);
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if (tty)
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cypress_set_termios(tty, port, &priv->tmp_termios);
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cypress_set_termios(tty, port, NULL);
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/* setup the port and start reading from the device */
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usb_fill_int_urb(port->interrupt_in_urb, serial->dev,
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@ -857,6 +853,11 @@ static int cypress_tiocmset(struct tty_struct *tty,
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return cypress_write(tty, port, NULL, 0);
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}
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static void cypress_earthmate_init_termios(struct tty_struct *tty)
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{
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tty_encode_baud_rate(tty, 4800, 4800);
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}
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static void cypress_set_termios(struct tty_struct *tty,
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struct usb_serial_port *port, struct ktermios *old_termios)
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{
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@ -868,45 +869,11 @@ static void cypress_set_termios(struct tty_struct *tty,
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__u8 oldlines;
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int linechange = 0;
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spin_lock_irqsave(&priv->lock, flags);
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/* We can't clean this one up as we don't know the device type
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early enough */
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if (!priv->termios_initialized) {
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if (priv->chiptype == CT_EARTHMATE) {
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tty->termios = tty_std_termios;
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tty->termios.c_cflag = B4800 | CS8 | CREAD | HUPCL |
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CLOCAL;
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tty->termios.c_ispeed = 4800;
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tty->termios.c_ospeed = 4800;
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} else if (priv->chiptype == CT_CYPHIDCOM) {
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tty->termios = tty_std_termios;
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tty->termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
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CLOCAL;
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tty->termios.c_ispeed = 9600;
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tty->termios.c_ospeed = 9600;
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} else if (priv->chiptype == CT_CA42V2) {
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tty->termios = tty_std_termios;
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tty->termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
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CLOCAL;
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tty->termios.c_ispeed = 9600;
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tty->termios.c_ospeed = 9600;
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}
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priv->termios_initialized = 1;
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}
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spin_unlock_irqrestore(&priv->lock, flags);
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/* Unsupported features need clearing */
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tty->termios.c_cflag &= ~(CMSPAR|CRTSCTS);
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cflag = tty->termios.c_cflag;
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/* check if there are new settings */
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if (old_termios) {
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spin_lock_irqsave(&priv->lock, flags);
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priv->tmp_termios = tty->termios;
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spin_unlock_irqrestore(&priv->lock, flags);
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}
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/* set number of data bits, parity, stop bits */
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/* when parity is disabled the parity type bit is ignored */
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@ -569,9 +569,9 @@ static int digi_set_modem_signals(struct usb_serial_port *port,
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ret = usb_submit_urb(oob_port->write_urb, GFP_ATOMIC);
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if (ret == 0) {
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oob_priv->dp_write_urb_in_use = 1;
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port_priv->dp_modem_signals =
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(port_priv->dp_modem_signals&~(TIOCM_DTR|TIOCM_RTS))
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| (modem_signals&(TIOCM_DTR|TIOCM_RTS));
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port_priv->dp_modem_signals &= ~(TIOCM_DTR | TIOCM_RTS);
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port_priv->dp_modem_signals |=
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modem_signals & (TIOCM_DTR | TIOCM_RTS);
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}
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spin_unlock(&port_priv->dp_port_lock);
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spin_unlock_irqrestore(&oob_priv->dp_port_lock, flags);
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@ -740,9 +740,9 @@ static void digi_set_termios(struct tty_struct *tty,
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/* set parity */
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tty->termios.c_cflag &= ~CMSPAR;
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if ((cflag&(PARENB|PARODD)) != (old_cflag&(PARENB|PARODD))) {
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if (cflag&PARENB) {
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if (cflag&PARODD)
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if ((cflag & (PARENB | PARODD)) != (old_cflag & (PARENB | PARODD))) {
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if (cflag & PARENB) {
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if (cflag & PARODD)
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arg = DIGI_PARITY_ODD;
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else
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arg = DIGI_PARITY_EVEN;
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@ -755,9 +755,9 @@ static void digi_set_termios(struct tty_struct *tty,
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buf[i++] = 0;
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}
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/* set word size */
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if ((cflag&CSIZE) != (old_cflag&CSIZE)) {
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if ((cflag & CSIZE) != (old_cflag & CSIZE)) {
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arg = -1;
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switch (cflag&CSIZE) {
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switch (cflag & CSIZE) {
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case CS5: arg = DIGI_WORD_SIZE_5; break;
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case CS6: arg = DIGI_WORD_SIZE_6; break;
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case CS7: arg = DIGI_WORD_SIZE_7; break;
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@ -765,7 +765,7 @@ static void digi_set_termios(struct tty_struct *tty,
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default:
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dev_dbg(dev,
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"digi_set_termios: can't handle word size %d\n",
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(cflag&CSIZE));
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cflag & CSIZE);
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break;
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}
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@ -779,9 +779,9 @@ static void digi_set_termios(struct tty_struct *tty,
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}
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/* set stop bits */
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if ((cflag&CSTOPB) != (old_cflag&CSTOPB)) {
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if ((cflag & CSTOPB) != (old_cflag & CSTOPB)) {
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if ((cflag&CSTOPB))
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if ((cflag & CSTOPB))
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arg = DIGI_STOP_BITS_2;
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else
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arg = DIGI_STOP_BITS_1;
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@ -794,15 +794,15 @@ static void digi_set_termios(struct tty_struct *tty,
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}
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/* set input flow control */
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if ((iflag&IXOFF) != (old_iflag&IXOFF)
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|| (cflag&CRTSCTS) != (old_cflag&CRTSCTS)) {
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if ((iflag & IXOFF) != (old_iflag & IXOFF) ||
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(cflag & CRTSCTS) != (old_cflag & CRTSCTS)) {
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arg = 0;
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if (iflag&IXOFF)
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if (iflag & IXOFF)
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arg |= DIGI_INPUT_FLOW_CONTROL_XON_XOFF;
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else
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arg &= ~DIGI_INPUT_FLOW_CONTROL_XON_XOFF;
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if (cflag&CRTSCTS) {
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if (cflag & CRTSCTS) {
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arg |= DIGI_INPUT_FLOW_CONTROL_RTS;
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/* On USB-4 it is necessary to assert RTS prior */
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@ -822,19 +822,18 @@ static void digi_set_termios(struct tty_struct *tty,
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}
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/* set output flow control */
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if ((iflag & IXON) != (old_iflag & IXON)
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|| (cflag & CRTSCTS) != (old_cflag & CRTSCTS)) {
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if ((iflag & IXON) != (old_iflag & IXON) ||
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(cflag & CRTSCTS) != (old_cflag & CRTSCTS)) {
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arg = 0;
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if (iflag & IXON)
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arg |= DIGI_OUTPUT_FLOW_CONTROL_XON_XOFF;
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else
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arg &= ~DIGI_OUTPUT_FLOW_CONTROL_XON_XOFF;
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if (cflag & CRTSCTS) {
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if (cflag & CRTSCTS)
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arg |= DIGI_OUTPUT_FLOW_CONTROL_CTS;
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} else {
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else
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arg &= ~DIGI_OUTPUT_FLOW_CONTROL_CTS;
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}
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buf[i++] = DIGI_CMD_SET_OUTPUT_FLOW_CONTROL;
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buf[i++] = priv->dp_port_num;
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@ -1084,7 +1083,7 @@ static int digi_chars_in_buffer(struct tty_struct *tty)
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static void digi_dtr_rts(struct usb_serial_port *port, int on)
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{
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/* Adjust DTR and RTS */
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digi_set_modem_signals(port, on * (TIOCM_DTR|TIOCM_RTS), 1);
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digi_set_modem_signals(port, on * (TIOCM_DTR | TIOCM_RTS), 1);
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}
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static int digi_open(struct tty_struct *tty, struct usb_serial_port *port)
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@ -28,7 +28,8 @@ static const struct usb_device_id id_table[] = {
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MODULE_DEVICE_TABLE(usb, id_table);
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/* Maximum baudrate for F81232 */
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#define F81232_MAX_BAUDRATE 115200
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#define F81232_MAX_BAUDRATE 1500000
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#define F81232_DEF_BAUDRATE 9600
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/* USB Control EP parameter */
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#define F81232_REGISTER_REQUEST 0xa0
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@ -41,19 +42,46 @@ MODULE_DEVICE_TABLE(usb, id_table);
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#define FIFO_CONTROL_REGISTER (0x02 + SERIAL_BASE_ADDRESS)
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#define LINE_CONTROL_REGISTER (0x03 + SERIAL_BASE_ADDRESS)
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#define MODEM_CONTROL_REGISTER (0x04 + SERIAL_BASE_ADDRESS)
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#define LINE_STATUS_REGISTER (0x05 + SERIAL_BASE_ADDRESS)
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#define MODEM_STATUS_REGISTER (0x06 + SERIAL_BASE_ADDRESS)
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/*
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* F81232 Clock registers (106h)
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*
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* Bit1-0: Clock source selector
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* 00: 1.846MHz.
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* 01: 18.46MHz.
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* 10: 24MHz.
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* 11: 14.77MHz.
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*/
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#define F81232_CLK_REGISTER 0x106
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#define F81232_CLK_1_846_MHZ 0
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#define F81232_CLK_18_46_MHZ BIT(0)
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#define F81232_CLK_24_MHZ BIT(1)
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#define F81232_CLK_14_77_MHZ (BIT(1) | BIT(0))
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#define F81232_CLK_MASK GENMASK(1, 0)
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struct f81232_private {
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struct mutex lock;
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u8 modem_control;
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u8 modem_status;
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u8 shadow_lcr;
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speed_t baud_base;
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struct work_struct lsr_work;
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struct work_struct interrupt_work;
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struct usb_serial_port *port;
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};
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static int calc_baud_divisor(speed_t baudrate)
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static u32 const baudrate_table[] = { 115200, 921600, 1152000, 1500000 };
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static u8 const clock_table[] = { F81232_CLK_1_846_MHZ, F81232_CLK_14_77_MHZ,
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F81232_CLK_18_46_MHZ, F81232_CLK_24_MHZ };
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static int calc_baud_divisor(speed_t baudrate, speed_t clockrate)
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{
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return DIV_ROUND_CLOSEST(F81232_MAX_BAUDRATE, baudrate);
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if (!baudrate)
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return 0;
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return DIV_ROUND_CLOSEST(clockrate, baudrate);
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}
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static int f81232_get_register(struct usb_serial_port *port, u16 reg, u8 *val)
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@ -127,6 +155,21 @@ static int f81232_set_register(struct usb_serial_port *port, u16 reg, u8 val)
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return status;
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}
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static int f81232_set_mask_register(struct usb_serial_port *port, u16 reg,
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u8 mask, u8 val)
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{
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int status;
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u8 tmp;
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status = f81232_get_register(port, reg, &tmp);
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if (status)
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return status;
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tmp = (tmp & ~mask) | (val & mask);
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return f81232_set_register(port, reg, tmp);
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}
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static void f81232_read_msr(struct usb_serial_port *port)
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{
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int status;
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|
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@ -282,6 +325,7 @@ exit:
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static void f81232_process_read_urb(struct urb *urb)
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{
|
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struct usb_serial_port *port = urb->context;
|
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struct f81232_private *priv = usb_get_serial_port_data(port);
|
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unsigned char *data = urb->transfer_buffer;
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char tty_flag;
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unsigned int i;
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@ -315,6 +359,7 @@ static void f81232_process_read_urb(struct urb *urb)
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|
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if (lsr & UART_LSR_OE) {
|
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port->icount.overrun++;
|
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schedule_work(&priv->lsr_work);
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tty_insert_flip_char(&port->port, 0,
|
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TTY_OVERRUN);
|
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}
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|
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@ -333,22 +378,72 @@ static void f81232_process_read_urb(struct urb *urb)
|
|||
|
||||
static void f81232_break_ctl(struct tty_struct *tty, int break_state)
|
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{
|
||||
/* FIXME - Stubbed out for now */
|
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struct usb_serial_port *port = tty->driver_data;
|
||||
struct f81232_private *priv = usb_get_serial_port_data(port);
|
||||
int status;
|
||||
|
||||
/*
|
||||
* break_state = -1 to turn on break, and 0 to turn off break
|
||||
* see drivers/char/tty_io.c to see it used.
|
||||
* last_set_data_urb_value NEVER has the break bit set in it.
|
||||
*/
|
||||
mutex_lock(&priv->lock);
|
||||
|
||||
if (break_state)
|
||||
priv->shadow_lcr |= UART_LCR_SBC;
|
||||
else
|
||||
priv->shadow_lcr &= ~UART_LCR_SBC;
|
||||
|
||||
status = f81232_set_register(port, LINE_CONTROL_REGISTER,
|
||||
priv->shadow_lcr);
|
||||
if (status)
|
||||
dev_err(&port->dev, "set break failed: %d\n", status);
|
||||
|
||||
mutex_unlock(&priv->lock);
|
||||
}
|
||||
|
||||
static void f81232_set_baudrate(struct usb_serial_port *port, speed_t baudrate)
|
||||
static int f81232_find_clk(speed_t baudrate)
|
||||
{
|
||||
int idx;
|
||||
|
||||
for (idx = 0; idx < ARRAY_SIZE(baudrate_table); ++idx) {
|
||||
if (baudrate <= baudrate_table[idx] &&
|
||||
baudrate_table[idx] % baudrate == 0)
|
||||
return idx;
|
||||
}
|
||||
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
static void f81232_set_baudrate(struct tty_struct *tty,
|
||||
struct usb_serial_port *port, speed_t baudrate,
|
||||
speed_t old_baudrate)
|
||||
{
|
||||
struct f81232_private *priv = usb_get_serial_port_data(port);
|
||||
u8 lcr;
|
||||
int divisor;
|
||||
int status = 0;
|
||||
int i;
|
||||
int idx;
|
||||
speed_t baud_list[] = { baudrate, old_baudrate, F81232_DEF_BAUDRATE };
|
||||
|
||||
divisor = calc_baud_divisor(baudrate);
|
||||
for (i = 0; i < ARRAY_SIZE(baud_list); ++i) {
|
||||
idx = f81232_find_clk(baud_list[i]);
|
||||
if (idx >= 0) {
|
||||
baudrate = baud_list[i];
|
||||
tty_encode_baud_rate(tty, baudrate, baudrate);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (idx < 0)
|
||||
return;
|
||||
|
||||
priv->baud_base = baudrate_table[idx];
|
||||
divisor = calc_baud_divisor(baudrate, priv->baud_base);
|
||||
|
||||
status = f81232_set_mask_register(port, F81232_CLK_REGISTER,
|
||||
F81232_CLK_MASK, clock_table[idx]);
|
||||
if (status) {
|
||||
dev_err(&port->dev, "%s failed to set CLK_REG: %d\n",
|
||||
__func__, status);
|
||||
return;
|
||||
}
|
||||
|
||||
status = f81232_get_register(port, LINE_CONTROL_REGISTER,
|
||||
&lcr); /* get LCR */
|
||||
|
|
@ -435,9 +530,11 @@ static int f81232_port_disable(struct usb_serial_port *port)
|
|||
static void f81232_set_termios(struct tty_struct *tty,
|
||||
struct usb_serial_port *port, struct ktermios *old_termios)
|
||||
{
|
||||
struct f81232_private *priv = usb_get_serial_port_data(port);
|
||||
u8 new_lcr = 0;
|
||||
int status = 0;
|
||||
speed_t baudrate;
|
||||
speed_t old_baud;
|
||||
|
||||
/* Don't change anything if nothing has changed */
|
||||
if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))
|
||||
|
|
@ -450,11 +547,12 @@ static void f81232_set_termios(struct tty_struct *tty,
|
|||
|
||||
baudrate = tty_get_baud_rate(tty);
|
||||
if (baudrate > 0) {
|
||||
if (baudrate > F81232_MAX_BAUDRATE) {
|
||||
baudrate = F81232_MAX_BAUDRATE;
|
||||
tty_encode_baud_rate(tty, baudrate, baudrate);
|
||||
}
|
||||
f81232_set_baudrate(port, baudrate);
|
||||
if (old_termios)
|
||||
old_baud = tty_termios_baud_rate(old_termios);
|
||||
else
|
||||
old_baud = F81232_DEF_BAUDRATE;
|
||||
|
||||
f81232_set_baudrate(tty, port, baudrate, old_baud);
|
||||
}
|
||||
|
||||
if (C_PARENB(tty)) {
|
||||
|
|
@ -486,11 +584,18 @@ static void f81232_set_termios(struct tty_struct *tty,
|
|||
break;
|
||||
}
|
||||
|
||||
mutex_lock(&priv->lock);
|
||||
|
||||
new_lcr |= (priv->shadow_lcr & UART_LCR_SBC);
|
||||
status = f81232_set_register(port, LINE_CONTROL_REGISTER, new_lcr);
|
||||
if (status) {
|
||||
dev_err(&port->dev, "%s failed to set LCR: %d\n",
|
||||
__func__, status);
|
||||
}
|
||||
|
||||
priv->shadow_lcr = new_lcr;
|
||||
|
||||
mutex_unlock(&priv->lock);
|
||||
}
|
||||
|
||||
static int f81232_tiocmget(struct tty_struct *tty)
|
||||
|
|
@ -556,9 +661,13 @@ static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port)
|
|||
|
||||
static void f81232_close(struct usb_serial_port *port)
|
||||
{
|
||||
struct f81232_private *port_priv = usb_get_serial_port_data(port);
|
||||
|
||||
f81232_port_disable(port);
|
||||
usb_serial_generic_close(port);
|
||||
usb_kill_urb(port->interrupt_in_urb);
|
||||
flush_work(&port_priv->interrupt_work);
|
||||
flush_work(&port_priv->lsr_work);
|
||||
}
|
||||
|
||||
static void f81232_dtr_rts(struct usb_serial_port *port, int on)
|
||||
|
|
@ -587,11 +696,12 @@ static int f81232_get_serial_info(struct tty_struct *tty,
|
|||
struct serial_struct *ss)
|
||||
{
|
||||
struct usb_serial_port *port = tty->driver_data;
|
||||
struct f81232_private *priv = usb_get_serial_port_data(port);
|
||||
|
||||
ss->type = PORT_16550A;
|
||||
ss->line = port->minor;
|
||||
ss->port = port->port_number;
|
||||
ss->baud_base = F81232_MAX_BAUDRATE;
|
||||
ss->baud_base = priv->baud_base;
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
|
@ -603,6 +713,21 @@ static void f81232_interrupt_work(struct work_struct *work)
|
|||
f81232_read_msr(priv->port);
|
||||
}
|
||||
|
||||
static void f81232_lsr_worker(struct work_struct *work)
|
||||
{
|
||||
struct f81232_private *priv;
|
||||
struct usb_serial_port *port;
|
||||
int status;
|
||||
u8 tmp;
|
||||
|
||||
priv = container_of(work, struct f81232_private, lsr_work);
|
||||
port = priv->port;
|
||||
|
||||
status = f81232_get_register(port, LINE_STATUS_REGISTER, &tmp);
|
||||
if (status)
|
||||
dev_warn(&port->dev, "read LSR failed: %d\n", status);
|
||||
}
|
||||
|
||||
static int f81232_port_probe(struct usb_serial_port *port)
|
||||
{
|
||||
struct f81232_private *priv;
|
||||
|
|
@ -613,6 +738,7 @@ static int f81232_port_probe(struct usb_serial_port *port)
|
|||
|
||||
mutex_init(&priv->lock);
|
||||
INIT_WORK(&priv->interrupt_work, f81232_interrupt_work);
|
||||
INIT_WORK(&priv->lsr_work, f81232_lsr_worker);
|
||||
|
||||
usb_set_serial_port_data(port, priv);
|
||||
|
||||
|
|
@ -632,6 +758,42 @@ static int f81232_port_remove(struct usb_serial_port *port)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int f81232_suspend(struct usb_serial *serial, pm_message_t message)
|
||||
{
|
||||
struct usb_serial_port *port = serial->port[0];
|
||||
struct f81232_private *port_priv = usb_get_serial_port_data(port);
|
||||
int i;
|
||||
|
||||
for (i = 0; i < ARRAY_SIZE(port->read_urbs); ++i)
|
||||
usb_kill_urb(port->read_urbs[i]);
|
||||
|
||||
usb_kill_urb(port->interrupt_in_urb);
|
||||
|
||||
if (port_priv) {
|
||||
flush_work(&port_priv->interrupt_work);
|
||||
flush_work(&port_priv->lsr_work);
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int f81232_resume(struct usb_serial *serial)
|
||||
{
|
||||
struct usb_serial_port *port = serial->port[0];
|
||||
int result;
|
||||
|
||||
if (tty_port_initialized(&port->port)) {
|
||||
result = usb_submit_urb(port->interrupt_in_urb, GFP_NOIO);
|
||||
if (result) {
|
||||
dev_err(&port->dev, "submit interrupt urb failed: %d\n",
|
||||
result);
|
||||
return result;
|
||||
}
|
||||
}
|
||||
|
||||
return usb_serial_generic_resume(serial);
|
||||
}
|
||||
|
||||
static struct usb_serial_driver f81232_device = {
|
||||
.driver = {
|
||||
.owner = THIS_MODULE,
|
||||
|
|
@ -655,6 +817,8 @@ static struct usb_serial_driver f81232_device = {
|
|||
.read_int_callback = f81232_read_int_callback,
|
||||
.port_probe = f81232_port_probe,
|
||||
.port_remove = f81232_port_remove,
|
||||
.suspend = f81232_suspend,
|
||||
.resume = f81232_resume,
|
||||
};
|
||||
|
||||
static struct usb_serial_driver * const serial_drivers[] = {
|
||||
|
|
|
|||
|
|
@ -106,12 +106,8 @@ void usb_serial_generic_deregister(void)
|
|||
int usb_serial_generic_open(struct tty_struct *tty, struct usb_serial_port *port)
|
||||
{
|
||||
int result = 0;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&port->lock, flags);
|
||||
port->throttled = 0;
|
||||
port->throttle_req = 0;
|
||||
spin_unlock_irqrestore(&port->lock, flags);
|
||||
clear_bit(USB_SERIAL_THROTTLED, &port->flags);
|
||||
|
||||
if (port->bulk_in_size)
|
||||
result = usb_serial_generic_submit_read_urbs(port, GFP_KERNEL);
|
||||
|
|
@ -375,7 +371,7 @@ void usb_serial_generic_read_bulk_callback(struct urb *urb)
|
|||
{
|
||||
struct usb_serial_port *port = urb->context;
|
||||
unsigned char *data = urb->transfer_buffer;
|
||||
unsigned long flags;
|
||||
bool stopped = false;
|
||||
int status = urb->status;
|
||||
int i;
|
||||
|
||||
|
|
@ -383,42 +379,55 @@ void usb_serial_generic_read_bulk_callback(struct urb *urb)
|
|||
if (urb == port->read_urbs[i])
|
||||
break;
|
||||
}
|
||||
set_bit(i, &port->read_urbs_free);
|
||||
|
||||
dev_dbg(&port->dev, "%s - urb %d, len %d\n", __func__, i,
|
||||
urb->actual_length);
|
||||
switch (status) {
|
||||
case 0:
|
||||
usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
|
||||
data);
|
||||
port->serial->type->process_read_urb(urb);
|
||||
break;
|
||||
case -ENOENT:
|
||||
case -ECONNRESET:
|
||||
case -ESHUTDOWN:
|
||||
dev_dbg(&port->dev, "%s - urb stopped: %d\n",
|
||||
__func__, status);
|
||||
return;
|
||||
stopped = true;
|
||||
break;
|
||||
case -EPIPE:
|
||||
dev_err(&port->dev, "%s - urb stopped: %d\n",
|
||||
__func__, status);
|
||||
return;
|
||||
stopped = true;
|
||||
break;
|
||||
default:
|
||||
dev_dbg(&port->dev, "%s - nonzero urb status: %d\n",
|
||||
__func__, status);
|
||||
goto resubmit;
|
||||
break;
|
||||
}
|
||||
|
||||
usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data);
|
||||
port->serial->type->process_read_urb(urb);
|
||||
/*
|
||||
* Make sure URB processing is done before marking as free to avoid
|
||||
* racing with unthrottle() on another CPU. Matches the barriers
|
||||
* implied by the test_and_clear_bit() in
|
||||
* usb_serial_generic_submit_read_urb().
|
||||
*/
|
||||
smp_mb__before_atomic();
|
||||
set_bit(i, &port->read_urbs_free);
|
||||
/*
|
||||
* Make sure URB is marked as free before checking the throttled flag
|
||||
* to avoid racing with unthrottle() on another CPU. Matches the
|
||||
* smp_mb() in unthrottle().
|
||||
*/
|
||||
smp_mb__after_atomic();
|
||||
|
||||
resubmit:
|
||||
/* Throttle the device if requested by tty */
|
||||
spin_lock_irqsave(&port->lock, flags);
|
||||
port->throttled = port->throttle_req;
|
||||
if (!port->throttled) {
|
||||
spin_unlock_irqrestore(&port->lock, flags);
|
||||
usb_serial_generic_submit_read_urb(port, i, GFP_ATOMIC);
|
||||
} else {
|
||||
spin_unlock_irqrestore(&port->lock, flags);
|
||||
}
|
||||
if (stopped)
|
||||
return;
|
||||
|
||||
if (test_bit(USB_SERIAL_THROTTLED, &port->flags))
|
||||
return;
|
||||
|
||||
usb_serial_generic_submit_read_urb(port, i, GFP_ATOMIC);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(usb_serial_generic_read_bulk_callback);
|
||||
|
||||
|
|
@ -454,10 +463,9 @@ void usb_serial_generic_write_bulk_callback(struct urb *urb)
|
|||
default:
|
||||
dev_err_console(port, "%s - nonzero urb status: %d\n",
|
||||
__func__, status);
|
||||
goto resubmit;
|
||||
break;
|
||||
}
|
||||
|
||||
resubmit:
|
||||
usb_serial_generic_write_start(port, GFP_ATOMIC);
|
||||
usb_serial_port_softint(port);
|
||||
}
|
||||
|
|
@ -466,26 +474,24 @@ EXPORT_SYMBOL_GPL(usb_serial_generic_write_bulk_callback);
|
|||
void usb_serial_generic_throttle(struct tty_struct *tty)
|
||||
{
|
||||
struct usb_serial_port *port = tty->driver_data;
|
||||
unsigned long flags;
|
||||
|
||||
spin_lock_irqsave(&port->lock, flags);
|
||||
port->throttle_req = 1;
|
||||
spin_unlock_irqrestore(&port->lock, flags);
|
||||
set_bit(USB_SERIAL_THROTTLED, &port->flags);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(usb_serial_generic_throttle);
|
||||
|
||||
void usb_serial_generic_unthrottle(struct tty_struct *tty)
|
||||
{
|
||||
struct usb_serial_port *port = tty->driver_data;
|
||||
int was_throttled;
|
||||
|
||||
spin_lock_irq(&port->lock);
|
||||
was_throttled = port->throttled;
|
||||
port->throttled = port->throttle_req = 0;
|
||||
spin_unlock_irq(&port->lock);
|
||||
clear_bit(USB_SERIAL_THROTTLED, &port->flags);
|
||||
|
||||
if (was_throttled)
|
||||
usb_serial_generic_submit_read_urbs(port, GFP_KERNEL);
|
||||
/*
|
||||
* Matches the smp_mb__after_atomic() in
|
||||
* usb_serial_generic_read_bulk_callback().
|
||||
*/
|
||||
smp_mb();
|
||||
|
||||
usb_serial_generic_submit_read_urbs(port, GFP_KERNEL);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(usb_serial_generic_unthrottle);
|
||||
|
||||
|
|
|
|||
|
|
@ -1751,7 +1751,7 @@ static void process_rcvd_data(struct edgeport_serial *edge_serial,
|
|||
edge_serial->rxState = EXPECT_HDR2;
|
||||
break;
|
||||
}
|
||||
/* otherwise, drop on through */
|
||||
/* Fall through */
|
||||
case EXPECT_HDR2:
|
||||
edge_serial->rxHeader2 = *buffer;
|
||||
++buffer;
|
||||
|
|
@ -1790,29 +1790,20 @@ static void process_rcvd_data(struct edgeport_serial *edge_serial,
|
|||
edge_serial->rxHeader2, 0);
|
||||
edge_serial->rxState = EXPECT_HDR1;
|
||||
break;
|
||||
} else {
|
||||
edge_serial->rxPort =
|
||||
IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
|
||||
edge_serial->rxBytesRemaining =
|
||||
IOSP_GET_HDR_DATA_LEN(
|
||||
edge_serial->rxHeader1,
|
||||
edge_serial->rxHeader2);
|
||||
dev_dbg(dev, "%s - Data for Port %u Len %u\n",
|
||||
__func__,
|
||||
edge_serial->rxPort,
|
||||
edge_serial->rxBytesRemaining);
|
||||
|
||||
/* ASSERT(DevExt->RxPort < DevExt->NumPorts);
|
||||
* ASSERT(DevExt->RxBytesRemaining <
|
||||
* IOSP_MAX_DATA_LENGTH);
|
||||
*/
|
||||
|
||||
if (bufferLength == 0) {
|
||||
edge_serial->rxState = EXPECT_DATA;
|
||||
break;
|
||||
}
|
||||
/* Else, drop through */
|
||||
}
|
||||
|
||||
edge_serial->rxPort = IOSP_GET_HDR_PORT(edge_serial->rxHeader1);
|
||||
edge_serial->rxBytesRemaining = IOSP_GET_HDR_DATA_LEN(edge_serial->rxHeader1,
|
||||
edge_serial->rxHeader2);
|
||||
dev_dbg(dev, "%s - Data for Port %u Len %u\n", __func__,
|
||||
edge_serial->rxPort,
|
||||
edge_serial->rxBytesRemaining);
|
||||
|
||||
if (bufferLength == 0) {
|
||||
edge_serial->rxState = EXPECT_DATA;
|
||||
break;
|
||||
}
|
||||
/* Fall through */
|
||||
case EXPECT_DATA: /* Expect data */
|
||||
if (bufferLength < edge_serial->rxBytesRemaining) {
|
||||
rxLen = bufferLength;
|
||||
|
|
|
|||
|
|
@ -942,9 +942,7 @@ static void iuu_close(struct usb_serial_port *port)
|
|||
|
||||
static void iuu_init_termios(struct tty_struct *tty)
|
||||
{
|
||||
tty->termios = tty_std_termios;
|
||||
tty->termios.c_cflag = CLOCAL | CREAD | CS8 | B9600
|
||||
| TIOCM_CTS | CSTOPB | PARENB;
|
||||
tty->termios.c_cflag = B9600 | CS8 | CSTOPB | CREAD | PARENB | CLOCAL;
|
||||
tty->termios.c_ispeed = 9600;
|
||||
tty->termios.c_ospeed = 9600;
|
||||
tty->termios.c_lflag = 0;
|
||||
|
|
|
|||
|
|
@ -393,10 +393,7 @@ static int oti6858_chars_in_buffer(struct tty_struct *tty)
|
|||
|
||||
static void oti6858_init_termios(struct tty_struct *tty)
|
||||
{
|
||||
tty->termios = tty_std_termios;
|
||||
tty->termios.c_cflag = B38400 | CS8 | CREAD | HUPCL | CLOCAL;
|
||||
tty->termios.c_ispeed = 38400;
|
||||
tty->termios.c_ospeed = 38400;
|
||||
tty_encode_baud_rate(tty, 38400, 38400);
|
||||
}
|
||||
|
||||
static void oti6858_set_termios(struct tty_struct *tty,
|
||||
|
|
|
|||
|
|
@ -145,6 +145,8 @@ MODULE_DEVICE_TABLE(usb, id_table);
|
|||
#define UART_OVERRUN_ERROR 0x40
|
||||
#define UART_CTS 0x80
|
||||
|
||||
#define PL2303_FLOWCTRL_MASK 0xf0
|
||||
|
||||
static void pl2303_set_break(struct usb_serial_port *port, bool enable);
|
||||
|
||||
enum pl2303_type {
|
||||
|
|
@ -156,6 +158,7 @@ enum pl2303_type {
|
|||
struct pl2303_type_data {
|
||||
speed_t max_baud_rate;
|
||||
unsigned long quirks;
|
||||
unsigned int no_autoxonxoff:1;
|
||||
};
|
||||
|
||||
struct pl2303_serial_private {
|
||||
|
|
@ -173,11 +176,12 @@ struct pl2303_private {
|
|||
|
||||
static const struct pl2303_type_data pl2303_type_data[TYPE_COUNT] = {
|
||||
[TYPE_01] = {
|
||||
.max_baud_rate = 1228800,
|
||||
.quirks = PL2303_QUIRK_LEGACY,
|
||||
.max_baud_rate = 1228800,
|
||||
.quirks = PL2303_QUIRK_LEGACY,
|
||||
.no_autoxonxoff = true,
|
||||
},
|
||||
[TYPE_HX] = {
|
||||
.max_baud_rate = 12000000,
|
||||
.max_baud_rate = 12000000,
|
||||
},
|
||||
};
|
||||
|
||||
|
|
@ -223,6 +227,29 @@ static int pl2303_vendor_write(struct usb_serial *serial, u16 value, u16 index)
|
|||
return 0;
|
||||
}
|
||||
|
||||
static int pl2303_update_reg(struct usb_serial *serial, u8 reg, u8 mask, u8 val)
|
||||
{
|
||||
int ret = 0;
|
||||
u8 *buf;
|
||||
|
||||
buf = kmalloc(1, GFP_KERNEL);
|
||||
if (!buf)
|
||||
return -ENOMEM;
|
||||
|
||||
ret = pl2303_vendor_read(serial, reg | 0x80, buf);
|
||||
if (ret)
|
||||
goto out_free;
|
||||
|
||||
*buf &= ~mask;
|
||||
*buf |= val & mask;
|
||||
|
||||
ret = pl2303_vendor_write(serial, reg, *buf);
|
||||
out_free:
|
||||
kfree(buf);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int pl2303_probe(struct usb_serial *serial,
|
||||
const struct usb_device_id *id)
|
||||
{
|
||||
|
|
@ -552,6 +579,20 @@ static bool pl2303_termios_change(const struct ktermios *a, const struct ktermio
|
|||
return tty_termios_hw_change(a, b) || ixon_change;
|
||||
}
|
||||
|
||||
static bool pl2303_enable_xonxoff(struct tty_struct *tty, const struct pl2303_type_data *type)
|
||||
{
|
||||
if (!I_IXON(tty) || I_IXANY(tty))
|
||||
return false;
|
||||
|
||||
if (START_CHAR(tty) != 0x11 || STOP_CHAR(tty) != 0x13)
|
||||
return false;
|
||||
|
||||
if (type->no_autoxonxoff)
|
||||
return false;
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
static void pl2303_set_termios(struct tty_struct *tty,
|
||||
struct usb_serial_port *port, struct ktermios *old_termios)
|
||||
{
|
||||
|
|
@ -678,14 +719,13 @@ static void pl2303_set_termios(struct tty_struct *tty,
|
|||
|
||||
if (C_CRTSCTS(tty)) {
|
||||
if (spriv->quirks & PL2303_QUIRK_LEGACY)
|
||||
pl2303_vendor_write(serial, 0x0, 0x41);
|
||||
pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0x40);
|
||||
else
|
||||
pl2303_vendor_write(serial, 0x0, 0x61);
|
||||
} else if (I_IXON(tty) && !I_IXANY(tty) && START_CHAR(tty) == 0x11 &&
|
||||
STOP_CHAR(tty) == 0x13) {
|
||||
pl2303_vendor_write(serial, 0x0, 0xc0);
|
||||
pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0x60);
|
||||
} else if (pl2303_enable_xonxoff(tty, spriv->type)) {
|
||||
pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0xc0);
|
||||
} else {
|
||||
pl2303_vendor_write(serial, 0x0, 0x0);
|
||||
pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0);
|
||||
}
|
||||
|
||||
kfree(buf);
|
||||
|
|
|
|||
|
|
@ -281,10 +281,7 @@ static void spcp8x5_dtr_rts(struct usb_serial_port *port, int on)
|
|||
|
||||
static void spcp8x5_init_termios(struct tty_struct *tty)
|
||||
{
|
||||
tty->termios = tty_std_termios;
|
||||
tty->termios.c_cflag = B115200 | CS8 | CREAD | HUPCL | CLOCAL;
|
||||
tty->termios.c_ispeed = 115200;
|
||||
tty->termios.c_ospeed = 115200;
|
||||
tty_encode_baud_rate(tty, 115200, 115200);
|
||||
}
|
||||
|
||||
static void spcp8x5_set_termios(struct tty_struct *tty,
|
||||
|
|
|
|||
|
|
@ -164,9 +164,9 @@ void usb_serial_put(struct usb_serial *serial)
|
|||
* @driver: the driver (USB in our case)
|
||||
* @tty: the tty being created
|
||||
*
|
||||
* Create the termios objects for this tty. We use the default
|
||||
* Initialise the termios structure for this tty. We use the default
|
||||
* USB serial settings but permit them to be overridden by
|
||||
* serial->type->init_termios.
|
||||
* serial->type->init_termios on first open.
|
||||
*
|
||||
* This is the first place a new tty gets used. Hence this is where we
|
||||
* acquire references to the usb_serial structure and the driver module,
|
||||
|
|
@ -178,6 +178,7 @@ static int serial_install(struct tty_driver *driver, struct tty_struct *tty)
|
|||
int idx = tty->index;
|
||||
struct usb_serial *serial;
|
||||
struct usb_serial_port *port;
|
||||
bool init_termios;
|
||||
int retval = -ENODEV;
|
||||
|
||||
port = usb_serial_port_get_by_minor(idx);
|
||||
|
|
@ -192,14 +193,16 @@ static int serial_install(struct tty_driver *driver, struct tty_struct *tty)
|
|||
if (retval)
|
||||
goto error_get_interface;
|
||||
|
||||
init_termios = (driver->termios[idx] == NULL);
|
||||
|
||||
retval = tty_standard_install(driver, tty);
|
||||
if (retval)
|
||||
goto error_init_termios;
|
||||
|
||||
mutex_unlock(&serial->disc_mutex);
|
||||
|
||||
/* allow the driver to update the settings */
|
||||
if (serial->type->init_termios)
|
||||
/* allow the driver to update the initial settings */
|
||||
if (init_termios && serial->type->init_termios)
|
||||
serial->type->init_termios(tty);
|
||||
|
||||
tty->driver_data = port;
|
||||
|
|
|
|||
|
|
@ -23,11 +23,9 @@
|
|||
/* The maximum number of ports one device can grab at once */
|
||||
#define MAX_NUM_PORTS 16
|
||||
|
||||
/* parity check flag */
|
||||
#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
|
||||
|
||||
/* USB serial flags */
|
||||
#define USB_SERIAL_WRITE_BUSY 0
|
||||
#define USB_SERIAL_THROTTLED 1
|
||||
|
||||
/**
|
||||
* usb_serial_port: structure for the specific ports of a device.
|
||||
|
|
@ -67,8 +65,6 @@
|
|||
* @flags: usb serial port flags
|
||||
* @write_wait: a wait_queue_head_t used by the port.
|
||||
* @work: work queue entry for the line discipline waking up.
|
||||
* @throttled: nonzero if the read urb is inactive to throttle the device
|
||||
* @throttle_req: nonzero if the tty wants to throttle us
|
||||
* @dev: pointer to the serial device
|
||||
*
|
||||
* This structure is used by the usb-serial core and drivers for the specific
|
||||
|
|
@ -115,8 +111,6 @@ struct usb_serial_port {
|
|||
unsigned long flags;
|
||||
wait_queue_head_t write_wait;
|
||||
struct work_struct work;
|
||||
char throttled;
|
||||
char throttle_req;
|
||||
unsigned long sysrq; /* sysrq timeout */
|
||||
struct device dev;
|
||||
};
|
||||
|
|
|
|||
Loading…
Reference in New Issue