Commit 63a71744 authored by Jag Raman's avatar Jag Raman Committed by David S. Miller

sparc64: vcc: Add open & close TTY operations

Add handlers to support TTY open & close operations
Signed-off-by: default avatarJagannathan Raman <jag.raman@oracle.com>
Reviewed-by: default avatarLiam Merwick <liam.merwick@oracle.com>
Reviewed-by: default avatarShannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 103b9b0b
...@@ -746,7 +746,68 @@ static struct vio_driver vcc_driver = { ...@@ -746,7 +746,68 @@ static struct vio_driver vcc_driver = {
.name = "vcc", .name = "vcc",
}; };
static const struct tty_operations vcc_ops; static int vcc_open(struct tty_struct *tty, struct file *vcc_file)
{
struct vcc_port *port;
if (unlikely(!tty)) {
pr_err("VCC: open: Invalid TTY handle\n");
return -ENXIO;
}
if (tty->count > 1)
return -EBUSY;
port = vcc_get_ne(tty->index);
if (unlikely(!port)) {
pr_err("VCC: open: Failed to find VCC port\n");
return -ENODEV;
}
if (unlikely(!port->vio.lp)) {
pr_err("VCC: open: LDC channel not configured\n");
vcc_put(port, false);
return -EPIPE;
}
vccdbgl(port->vio.lp);
vcc_put(port, false);
if (unlikely(!tty->port)) {
pr_err("VCC: open: TTY port not found\n");
return -ENXIO;
}
if (unlikely(!tty->port->ops)) {
pr_err("VCC: open: TTY ops not defined\n");
return -ENXIO;
}
return tty_port_open(tty->port, tty, vcc_file);
}
static void vcc_close(struct tty_struct *tty, struct file *vcc_file)
{
if (unlikely(!tty)) {
pr_err("VCC: close: Invalid TTY handle\n");
return;
}
if (unlikely(tty->count > 1))
return;
if (unlikely(!tty->port)) {
pr_err("VCC: close: TTY port not found\n");
return;
}
tty_port_close(tty->port, tty, vcc_file);
}
static const struct tty_operations vcc_ops = {
.open = vcc_open,
.close = vcc_close,
};
#define VCC_TTY_FLAGS (TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_REAL_RAW) #define VCC_TTY_FLAGS (TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_REAL_RAW)
......
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