*/
termios->c_cflag &= ~CBAUD;
if (old) {
- termios->c_cflag |= old->c_cflag & CBAUD;
+ baud = tty_termios_baud_rate(old);
+ tty_termios_encode_baud_rate(termios, baud, baud);
old = NULL;
continue;
}
* As a last resort, if the quotient is zero,
* default to 9600 bps
*/
- termios->c_cflag |= B9600;
+ tty_termios_encode_baud_rate(termios, 9600, 9600);
}
return 0;
/*
* These are the bits that are used to setup various
- * flags in the low level driver.
+ * flags in the low level driver. We can ignore the Bfoo
+ * bits in c_cflag; c_[io]speed will always be set
+ * appropriately by set_termios() in tty_ioctl.c
*/
#define RELEVANT_IFLAG(iflag) ((iflag) & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
-
if ((cflag ^ old_termios->c_cflag) == 0 &&
+ tty->termios->c_ospeed == old_termios->c_ospeed &&
+ tty->termios->c_ispeed == old_termios->c_ispeed &&
RELEVANT_IFLAG(tty->termios->c_iflag ^ old_termios->c_iflag) == 0)
return;
int baud, int parity, int bits, int flow)
{
struct ktermios termios;
+ static struct ktermios dummy;
int i;
/*
*/
port->mctrl |= TIOCM_DTR;
- port->ops->set_termios(port, &termios, NULL);
+ port->ops->set_termios(port, &termios, &dummy);
co->cflag = termios.c_cflag;
return 0;
}
}
+struct uart_match {
+ struct uart_port *port;
+ struct uart_driver *driver;
+};
+
+static int serial_match_port(struct device *dev, void *data)
+{
+ struct uart_match *match = data;
+ dev_t devt = MKDEV(match->driver->major, match->driver->minor) + match->port->line;
+
+ return dev->devt == devt; /* Actually, only one tty per port */
+}
+
int uart_suspend_port(struct uart_driver *drv, struct uart_port *port)
{
struct uart_state *state = drv->state + port->line;
+ struct device *tty_dev;
+ struct uart_match match = {port, drv};
mutex_lock(&state->mutex);
-#ifdef CONFIG_DISABLE_CONSOLE_SUSPEND
- if (uart_console(port)) {
+ if (!console_suspend_enabled && uart_console(port)) {
+ /* we're going to avoid suspending serial console */
mutex_unlock(&state->mutex);
return 0;
}
-#endif
+
+ tty_dev = device_find_child(port->dev, &match, serial_match_port);
+ if (device_may_wakeup(tty_dev)) {
+ enable_irq_wake(port->irq);
+ put_device(tty_dev);
+ mutex_unlock(&state->mutex);
+ return 0;
+ }
+ port->suspended = 1;
if (state->info && state->info->flags & UIF_INITIALIZED) {
const struct uart_ops *ops = port->ops;
+ int tries;
state->info->flags = (state->info->flags & ~UIF_INITIALIZED)
| UIF_SUSPENDED;
/*
* Wait for the transmitter to empty.
*/
- while (!ops->tx_empty(port)) {
+ for (tries = 3; !ops->tx_empty(port) && tries; tries--) {
msleep(10);
}
+ if (!tries)
+ printk(KERN_ERR "%s%s%s%d: Unable to drain transmitter\n",
+ port->dev ? port->dev->bus_id : "",
+ port->dev ? ": " : "",
+ drv->dev_name, port->line);
ops->shutdown(port);
}
mutex_lock(&state->mutex);
-#ifdef CONFIG_DISABLE_CONSOLE_SUSPEND
- if (uart_console(port)) {
+ if (!console_suspend_enabled && uart_console(port)) {
+ /* no need to resume serial console, it wasn't suspended */
mutex_unlock(&state->mutex);
return 0;
}
-#endif
- uart_change_pm(state, 0);
+ if (!port->suspended) {
+ disable_irq_wake(port->irq);
+ mutex_unlock(&state->mutex);
+ return 0;
+ }
+ port->suspended = 0;
/*
* Re-enable the console device after suspending.
if (state->info && state->info->tty && termios.c_cflag == 0)
termios = *state->info->tty->termios;
+ uart_change_pm(state, 0);
port->ops->set_termios(port, &termios, NULL);
console_start(port->cons);
}
const struct uart_ops *ops = port->ops;
int ret;
+ uart_change_pm(state, 0);
ops->set_mctrl(port, 0);
ret = ops->startup(port);
if (ret == 0) {
/*
* Ensure that the modem control lines are de-activated.
+ * keep the DTR setting that is set in uart_set_options()
* We probably don't need a spinlock around this, but
*/
spin_lock_irqsave(&port->lock, flags);
- port->ops->set_mctrl(port, 0);
+ port->ops->set_mctrl(port, port->mctrl & TIOCM_DTR);
spin_unlock_irqrestore(&port->lock, flags);
+ /*
+ * If this driver supports console, and it hasn't been
+ * successfully registered yet, try to re-register it.
+ * It may be that the port was not available.
+ */
+ if (port->cons && !(port->cons->flags & CON_ENABLED))
+ register_console(port->cons);
+
/*
* Power down all ports by default, except the
* console if we have one.
{
struct uart_state *state;
int ret = 0;
+ struct device *tty_dev;
BUG_ON(in_interrupt());
}
state->port = port;
+ state->pm_state = -1;
port->cons = drv->cons;
port->info = state->info;
* Register the port whether it's detected or not. This allows
* setserial to be used to alter this ports parameters.
*/
- tty_register_device(drv->tty_driver, port->line, port->dev);
-
- /*
- * If this driver supports console, and it hasn't been
- * successfully registered yet, try to re-register it.
- * It may be that the port was not available.
- */
- if (port->type != PORT_UNKNOWN &&
- port->cons && !(port->cons->flags & CON_ENABLED))
- register_console(port->cons);
+ tty_dev = tty_register_device(drv->tty_driver, port->line, port->dev);
+ if (likely(!IS_ERR(tty_dev))) {
+ device_can_wakeup(tty_dev) = 1;
+ device_set_wakeup_enable(tty_dev, 0);
+ } else
+ printk(KERN_ERR "Cannot register tty device on line %d\n",
+ port->line);
/*
* Ensure UPF_DEAD is not set.