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path: root/drivers/usb/serial/f81232.c
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Diffstat (limited to 'drivers/usb/serial/f81232.c')
-rw-r--r--drivers/usb/serial/f81232.c136
1 files changed, 38 insertions, 98 deletions
diff --git a/drivers/usb/serial/f81232.c b/drivers/usb/serial/f81232.c
index 499b15fd82f..c5dc233db2d 100644
--- a/drivers/usb/serial/f81232.c
+++ b/drivers/usb/serial/f81232.c
@@ -12,7 +12,6 @@
#include <linux/kernel.h>
#include <linux/errno.h>
-#include <linux/init.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_driver.h>
@@ -25,8 +24,6 @@
#include <linux/usb.h>
#include <linux/usb/serial.h>
-static bool debug;
-
static const struct usb_device_id id_table[] = {
{ USB_DEVICE(0x1934, 0x0706) },
{ } /* Terminating entry */
@@ -49,7 +46,6 @@ MODULE_DEVICE_TABLE(usb, id_table);
struct f81232_private {
spinlock_t lock;
- wait_queue_head_t delta_msr_wait;
u8 line_control;
u8 line_status;
};
@@ -58,6 +54,13 @@ static void f81232_update_line_status(struct usb_serial_port *port,
unsigned char *data,
unsigned int actual_length)
{
+ /*
+ * FIXME: Update port->icount, and call
+ *
+ * wake_up_interruptible(&port->port.delta_msr_wait);
+ *
+ * on MSR changes.
+ */
}
static void f81232_read_int_callback(struct urb *urb)
@@ -85,7 +88,7 @@ static void f81232_read_int_callback(struct urb *urb)
goto exit;
}
- usb_serial_debug_data(debug, &port->dev, __func__,
+ usb_serial_debug_data(&port->dev, __func__,
urb->actual_length, urb->transfer_buffer);
f81232_update_line_status(port, data, actual_length);
@@ -102,7 +105,6 @@ static void f81232_process_read_urb(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
struct f81232_private *priv = usb_get_serial_port_data(port);
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
char tty_flag = TTY_NORMAL;
unsigned long flags;
@@ -114,15 +116,10 @@ static void f81232_process_read_urb(struct urb *urb)
line_status = priv->line_status;
priv->line_status &= ~UART_STATE_TRANSIENT_MASK;
spin_unlock_irqrestore(&priv->lock, flags);
- wake_up_interruptible(&priv->delta_msr_wait);
if (!urb->actual_length)
return;
- tty = tty_port_tty_get(&port->port);
- if (!tty)
- return;
-
/* break takes precedence over parity, */
/* which takes precedence over framing errors */
if (line_status & UART_BREAK_ERROR)
@@ -135,19 +132,19 @@ static void f81232_process_read_urb(struct urb *urb)
/* overrun is special, not associated with a char */
if (line_status & UART_OVERRUN_ERROR)
- tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+ tty_insert_flip_char(&port->port, 0, TTY_OVERRUN);
if (port->port.console && port->sysrq) {
for (i = 0; i < urb->actual_length; ++i)
if (!usb_serial_handle_sysrq_char(port, data[i]))
- tty_insert_flip_char(tty, data[i], tty_flag);
+ tty_insert_flip_char(&port->port, data[i],
+ tty_flag);
} else {
- tty_insert_flip_string_fixed_flag(tty, data, tty_flag,
+ tty_insert_flip_string_fixed_flag(&port->port, data, tty_flag,
urb->actual_length);
}
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(&port->port);
}
static int set_control_lines(struct usb_device *dev, u8 value)
@@ -173,10 +170,12 @@ static void f81232_set_termios(struct tty_struct *tty,
/* FIXME - Stubbed out for now */
/* Don't change anything if nothing has changed */
- if (!tty_termios_hw_change(tty->termios, old_termios))
+ if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios))
return;
/* Do the real work here... */
+ if (old_termios)
+ tty_termios_copy_hw(&tty->termios, old_termios);
}
static int f81232_tiocmget(struct tty_struct *tty)
@@ -194,12 +193,11 @@ static int f81232_tiocmset(struct tty_struct *tty,
static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port)
{
- struct ktermios tmp_termios;
int result;
/* Setup termios */
if (tty)
- f81232_set_termios(tty, port, &tmp_termios);
+ f81232_set_termios(tty, port, NULL);
result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
if (result) {
@@ -214,7 +212,6 @@ static int f81232_open(struct tty_struct *tty, struct usb_serial_port *port)
return result;
}
- port->port.drain_delay = 256;
return 0;
}
@@ -249,109 +246,55 @@ static int f81232_carrier_raised(struct usb_serial_port *port)
return 0;
}
-static int wait_modem_info(struct usb_serial_port *port, unsigned int arg)
-{
- struct f81232_private *priv = usb_get_serial_port_data(port);
- unsigned long flags;
- unsigned int prevstatus;
- unsigned int status;
- unsigned int changed;
-
- spin_lock_irqsave(&priv->lock, flags);
- prevstatus = priv->line_status;
- spin_unlock_irqrestore(&priv->lock, flags);
-
- while (1) {
- interruptible_sleep_on(&priv->delta_msr_wait);
- /* see if a signal did it */
- if (signal_pending(current))
- return -ERESTARTSYS;
-
- spin_lock_irqsave(&priv->lock, flags);
- status = priv->line_status;
- spin_unlock_irqrestore(&priv->lock, flags);
-
- changed = prevstatus ^ status;
-
- if (((arg & TIOCM_RNG) && (changed & UART_RING)) ||
- ((arg & TIOCM_DSR) && (changed & UART_DSR)) ||
- ((arg & TIOCM_CD) && (changed & UART_DCD)) ||
- ((arg & TIOCM_CTS) && (changed & UART_CTS))) {
- return 0;
- }
- prevstatus = status;
- }
- /* NOTREACHED */
- return 0;
-}
-
static int f81232_ioctl(struct tty_struct *tty,
unsigned int cmd, unsigned long arg)
{
struct serial_struct ser;
struct usb_serial_port *port = tty->driver_data;
- dev_dbg(&port->dev, "%s (%d) cmd = 0x%04x\n", __func__,
- port->number, cmd);
-
switch (cmd) {
case TIOCGSERIAL:
memset(&ser, 0, sizeof ser);
ser.type = PORT_16654;
- ser.line = port->serial->minor;
- ser.port = port->number;
+ ser.line = port->minor;
+ ser.port = port->port_number;
ser.baud_base = 460800;
if (copy_to_user((void __user *)arg, &ser, sizeof ser))
return -EFAULT;
return 0;
-
- case TIOCMIWAIT:
- dev_dbg(&port->dev, "%s (%d) TIOCMIWAIT\n", __func__,
- port->number);
- return wait_modem_info(port, arg);
default:
- dev_dbg(&port->dev, "%s not supported = 0x%04x\n",
- __func__, cmd);
break;
}
return -ENOIOCTLCMD;
}
-static int f81232_startup(struct usb_serial *serial)
+static int f81232_port_probe(struct usb_serial_port *port)
{
struct f81232_private *priv;
- int i;
- for (i = 0; i < serial->num_ports; ++i) {
- priv = kzalloc(sizeof(struct f81232_private), GFP_KERNEL);
- if (!priv)
- goto cleanup;
- spin_lock_init(&priv->lock);
- init_waitqueue_head(&priv->delta_msr_wait);
- usb_set_serial_port_data(serial->port[i], priv);
- }
- return 0;
+ priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
-cleanup:
- for (--i; i >= 0; --i) {
- priv = usb_get_serial_port_data(serial->port[i]);
- kfree(priv);
- usb_set_serial_port_data(serial->port[i], NULL);
- }
- return -ENOMEM;
+ spin_lock_init(&priv->lock);
+
+ usb_set_serial_port_data(port, priv);
+
+ port->port.drain_delay = 256;
+
+ return 0;
}
-static void f81232_release(struct usb_serial *serial)
+static int f81232_port_remove(struct usb_serial_port *port)
{
- int i;
struct f81232_private *priv;
- for (i = 0; i < serial->num_ports; ++i) {
- priv = usb_get_serial_port_data(serial->port[i]);
- kfree(priv);
- }
+ priv = usb_get_serial_port_data(port);
+ kfree(priv);
+
+ return 0;
}
static struct usb_serial_driver f81232_device = {
@@ -372,10 +315,11 @@ static struct usb_serial_driver f81232_device = {
.set_termios = f81232_set_termios,
.tiocmget = f81232_tiocmget,
.tiocmset = f81232_tiocmset,
+ .tiocmiwait = usb_serial_generic_tiocmiwait,
.process_read_urb = f81232_process_read_urb,
.read_int_callback = f81232_read_int_callback,
- .attach = f81232_startup,
- .release = f81232_release,
+ .port_probe = f81232_port_probe,
+ .port_remove = f81232_port_remove,
};
static struct usb_serial_driver * const serial_drivers[] = {
@@ -388,7 +332,3 @@ module_usb_serial_driver(serial_drivers, id_table);
MODULE_DESCRIPTION("Fintek F81232 USB to serial adaptor driver");
MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org");
MODULE_LICENSE("GPL v2");
-
-module_param(debug, bool, S_IRUGO | S_IWUSR);
-MODULE_PARM_DESC(debug, "Debug enabled or not");
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 13:11:42 +0000