/*
* Returns the current TIOCM status bits including:
* SMD Signals (DTR/DSR, CTS/RTS, CD, RI)
* TIOCM_OUT1 - reset state (1=in reset)
* TIOCM_OUT2 - reset state updated (1=updated)
*/
static int smd_tty_tiocmget(struct tty_struct *tty)
{
struct smd_tty_info *info = tty->driver_data;
unsigned long flags;
int tiocm;
tiocm = smd_tiocmget(info->ch);
spin_lock_irqsave(&info->reset_lock, flags);
tiocm |= (info->in_reset ? TIOCM_OUT1 : 0);
if (info->in_reset_updated) {
tiocm |= TIOCM_OUT2;
info->in_reset_updated = 0;
}
spin_unlock_irqrestore(&info->reset_lock, flags);
return tiocm;
}
/*
* Returns the current TIOCM status bits including:
* SMD Signals (DTR/DSR, CTS/RTS, CD, RI)
* TIOCM_OUT1 - reset state (1=in reset)
* TIOCM_OUT2 - reset state updated (1=updated)
*/
static int smd_tty_tiocmget(struct tty_struct *tty)
{
struct smd_tty_info *info = tty->driver_data;
unsigned long flags;
int tiocm;
tiocm = smd_tiocmget(info->ch);
spin_lock_irqsave(&info->reset_lock, flags);
tiocm |= (info->in_reset ? TIOCM_OUT1 : 0);
if (info->in_reset_updated) {
tiocm |= TIOCM_OUT2;
info->in_reset_updated = 0;
}
SMD_TTY_INFO("PID %u --> %s TIOCM is %x ",
current->pid, __func__, tiocm);
spin_unlock_irqrestore(&info->reset_lock, flags);
return tiocm;
}
static long smd_vt_ioctl(struct file *file,
unsigned int cmd,
unsigned long arg)
{
int ret;
// SMD bug fix. 0811
if((smd_vt_devp->open_count == 0) ||( smd_vt_devp->ch == 0)) return -1;
switch (cmd) {
case TIOCMGET:
ret = smd_tiocmget(smd_vt_devp->ch);
break;
case TIOCMSET:
ret = smd_tiocmset(smd_vt_devp->ch, arg, ~arg);
break;
default:
ret = -1;
}
return ret;
}
static int smd_tty_tiocmget(struct tty_struct *tty, struct file *file)
{
struct smd_tty_info *info = tty->driver_data;
return smd_tiocmget(info->ch);
}
