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path: root/drivers/usb/serial/kl5kusb105.c
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Diffstat (limited to 'drivers/usb/serial/kl5kusb105.c')
-rw-r--r--drivers/usb/serial/kl5kusb105.c115
1 files changed, 22 insertions, 93 deletions
diff --git a/drivers/usb/serial/kl5kusb105.c b/drivers/usb/serial/kl5kusb105.c
index 6cb45757818f..595415e59d5d 100644
--- a/drivers/usb/serial/kl5kusb105.c
+++ b/drivers/usb/serial/kl5kusb105.c
@@ -89,7 +89,6 @@ static struct usb_serial_driver kl5kusb105d_device = {
.open = klsi_105_open,
.close = klsi_105_close,
.set_termios = klsi_105_set_termios,
- /*.break_ctl = klsi_105_break_ctl,*/
.tiocmget = klsi_105_tiocmget,
.port_probe = klsi_105_port_probe,
.port_remove = klsi_105_port_remove,
@@ -104,16 +103,15 @@ static struct usb_serial_driver * const serial_drivers[] = {
};
struct klsi_105_port_settings {
- __u8 pktlen; /* always 5, it seems */
- __u8 baudrate;
- __u8 databits;
- __u8 unknown1;
- __u8 unknown2;
-} __attribute__ ((packed));
+ u8 pktlen; /* always 5, it seems */
+ u8 baudrate;
+ u8 databits;
+ u8 unknown1;
+ u8 unknown2;
+};
struct klsi_105_private {
struct klsi_105_port_settings cfg;
- struct ktermios termios;
unsigned long line_state; /* modem line settings */
spinlock_t lock;
};
@@ -143,10 +141,12 @@ static int klsi_105_chg_port_settings(struct usb_serial_port *port,
if (rc < 0)
dev_err(&port->dev,
"Change port settings failed (error = %d)\n", rc);
- dev_info(&port->serial->dev->dev,
- "%d byte block, baudrate %x, databits %d, u1 %d, u2 %d\n",
- settings->pktlen, settings->baudrate, settings->databits,
- settings->unknown1, settings->unknown2);
+
+ dev_dbg(&port->dev,
+ "pktlen %u, baudrate 0x%02x, databits %u, u1 %u, u2 %u\n",
+ settings->pktlen, settings->baudrate, settings->databits,
+ settings->unknown1, settings->unknown2);
+
return rc;
}
@@ -175,8 +175,6 @@ static int klsi_105_get_line_state(struct usb_serial_port *port,
u8 *status_buf;
__u16 status;
- dev_info(&port->serial->dev->dev, "sending SIO Poll request\n");
-
status_buf = kmalloc(KLSI_STATUSBUF_LEN, GFP_KERNEL);
if (!status_buf)
return -ENOMEM;
@@ -199,8 +197,8 @@ static int klsi_105_get_line_state(struct usb_serial_port *port,
} else {
status = get_unaligned_le16(status_buf);
- dev_info(&port->serial->dev->dev, "read status %x %x\n",
- status_buf[0], status_buf[1]);
+ dev_dbg(&port->dev, "read status %02x %02x\n",
+ status_buf[0], status_buf[1]);
*line_state_p = klsi_105_status2linestate(status);
}
@@ -233,8 +231,6 @@ static int klsi_105_port_probe(struct usb_serial_port *port)
spin_lock_init(&priv->lock);
- /* priv->termios is left uninitialized until port opening */
-
usb_set_serial_port_data(port, priv);
return 0;
@@ -255,7 +251,6 @@ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port)
struct klsi_105_private *priv = usb_get_serial_port_data(port);
int retval = 0;
int rc;
- int i;
unsigned long line_state;
struct klsi_105_port_settings *cfg;
unsigned long flags;
@@ -278,14 +273,7 @@ static int klsi_105_open(struct tty_struct *tty, struct usb_serial_port *port)
cfg->unknown2 = 1;
klsi_105_chg_port_settings(port, cfg);
- /* set up termios structure */
spin_lock_irqsave(&priv->lock, flags);
- priv->termios.c_iflag = tty->termios.c_iflag;
- priv->termios.c_oflag = tty->termios.c_oflag;
- priv->termios.c_cflag = tty->termios.c_cflag;
- priv->termios.c_lflag = tty->termios.c_lflag;
- for (i = 0; i < NCCS; i++)
- priv->termios.c_cc[i] = tty->termios.c_cc[i];
priv->cfg.pktlen = cfg->pktlen;
priv->cfg.baudrate = cfg->baudrate;
priv->cfg.databits = cfg->databits;
@@ -438,19 +426,6 @@ static void klsi_105_set_termios(struct tty_struct *tty,
*/
baud = tty_get_baud_rate(tty);
- if ((cflag & CBAUD) != (old_cflag & CBAUD)) {
- /* reassert DTR and (maybe) RTS on transition from B0 */
- if ((old_cflag & CBAUD) == B0) {
- dev_dbg(dev, "%s: baud was B0\n", __func__);
-#if 0
- priv->control_state |= TIOCM_DTR;
- /* don't set RTS if using hardware flow control */
- if (!(old_cflag & CRTSCTS))
- priv->control_state |= TIOCM_RTS;
- mct_u232_set_modem_ctrl(serial, priv->control_state);
-#endif
- }
- }
switch (baud) {
case 0: /* handled below */
break;
@@ -484,17 +459,14 @@ static void klsi_105_set_termios(struct tty_struct *tty,
baud = 9600;
break;
}
- if ((cflag & CBAUD) == B0) {
- dev_dbg(dev, "%s: baud is B0\n", __func__);
- /* Drop RTS and DTR */
- /* maybe this should be simulated by sending read
- * disable and read enable messages?
- */
-#if 0
- priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
- mct_u232_set_modem_ctrl(serial, priv->control_state);
-#endif
- }
+
+ /*
+ * FIXME: implement B0 handling
+ *
+ * Maybe this should be simulated by sending read disable and read
+ * enable messages?
+ */
+
tty_encode_baud_rate(tty, baud, baud);
if ((cflag & CSIZE) != (old_cflag & CSIZE)) {
@@ -528,22 +500,6 @@ static void klsi_105_set_termios(struct tty_struct *tty,
|| (cflag & CSTOPB) != (old_cflag & CSTOPB)) {
/* Not currently supported */
tty->termios.c_cflag &= ~(PARENB|PARODD|CSTOPB);
-#if 0
- priv->last_lcr = 0;
-
- /* set the parity */
- if (cflag & PARENB)
- priv->last_lcr |= (cflag & PARODD) ?
- MCT_U232_PARITY_ODD : MCT_U232_PARITY_EVEN;
- else
- priv->last_lcr |= MCT_U232_PARITY_NONE;
-
- /* set the number of stop bits */
- priv->last_lcr |= (cflag & CSTOPB) ?
- MCT_U232_STOP_BITS_2 : MCT_U232_STOP_BITS_1;
-
- mct_u232_set_line_ctrl(serial, priv->last_lcr);
-#endif
}
/*
* Set flow control: well, I do not really now how to handle DTR/RTS.
@@ -554,14 +510,6 @@ static void klsi_105_set_termios(struct tty_struct *tty,
|| (cflag & CRTSCTS) != (old_cflag & CRTSCTS)) {
/* Not currently supported */
tty->termios.c_cflag &= ~CRTSCTS;
- /* Drop DTR/RTS if no flow control otherwise assert */
-#if 0
- if ((iflag & IXOFF) || (iflag & IXON) || (cflag & CRTSCTS))
- priv->control_state |= TIOCM_DTR | TIOCM_RTS;
- else
- priv->control_state &= ~(TIOCM_DTR | TIOCM_RTS);
- mct_u232_set_modem_ctrl(serial, priv->control_state);
-#endif
}
memcpy(cfg, &priv->cfg, sizeof(*cfg));
spin_unlock_irqrestore(&priv->lock, flags);
@@ -572,25 +520,6 @@ err:
kfree(cfg);
}
-#if 0
-static void mct_u232_break_ctl(struct tty_struct *tty, int break_state)
-{
- struct usb_serial_port *port = tty->driver_data;
- struct usb_serial *serial = port->serial;
- struct mct_u232_private *priv =
- (struct mct_u232_private *)port->private;
- unsigned char lcr = priv->last_lcr;
-
- dev_dbg(&port->dev, "%s - state=%d\n", __func__, break_state);
-
- /* LOCKING */
- if (break_state)
- lcr |= MCT_U232_SET_BREAK;
-
- mct_u232_set_line_ctrl(serial, lcr);
-}
-#endif
-
static int klsi_105_tiocmget(struct tty_struct *tty)
{
struct usb_serial_port *port = tty->driver_data;
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-08 18:12:45 +0000