staging/gdm724x/gdm_tty.c

24 static inline bool gdm_tty_ready(struct gdm *gdm)
26 	return gdm && gdm->tty_dev && gdm->port.count;
30 static struct gdm *gdm_table[TTY_MAX_COUNT][GDM_TTY_MINOR];
38 	struct gdm *gdm = container_of(port, struct gdm, port);
41 	gdm_table[gdm->index][gdm->minor] = NULL;
44 	kfree(gdm);
53 	struct gdm *gdm = NULL;
62 	gdm = gdm_table[ret][tty->index];
63 	if (!gdm) {
68 	tty_port_get(&gdm->port);
72 		tty_port_put(&gdm->port);
77 	tty->driver_data = gdm;
85 	struct gdm *gdm = tty->driver_data;
87 	return tty_port_open(&gdm->port, tty, filp);
92 	struct gdm *gdm = tty->driver_data;
94 	tty_port_put(&gdm->port);
99 	struct gdm *gdm = tty->driver_data;
101 	tty_port_hangup(&gdm->port);
106 	struct gdm *gdm = tty->driver_data;
108 	tty_port_close(&gdm->port, tty, filp);
117 	struct gdm *gdm = tty_dev->gdm[index];
119 	if (!gdm_tty_ready(gdm)) {
121 			gdm->tty_dev->recv_func(gdm->tty_dev->priv_dev,
127 		if (tty_buffer_request_room(&gdm->port, len) == len) {
128 			tty_insert_flip_string(&gdm->port, data, len);
129 			tty_flip_buffer_push(&gdm->port);
136 		gdm->tty_dev->recv_func(gdm->tty_dev->priv_dev,
144 	struct gdm *gdm = arg;
146 	if (!gdm_tty_ready(gdm))
149 	tty_port_tty_wakeup(&gdm->port);
154 	struct gdm *gdm = tty->driver_data;
158 	if (!gdm_tty_ready(gdm))
164 		gdm->tty_dev->send_func(gdm->tty_dev->priv_dev,
167 					gdm->index,
169 					gdm);
179 	struct gdm *gdm = tty->driver_data;
181 	if (!gdm_tty_ready(gdm))
189 	struct gdm *gdm;
194 		gdm = kmalloc(sizeof(*gdm), GFP_KERNEL);
195 		if (!gdm)
205 			kfree(gdm);
210 		gdm_table[i][j] = gdm;
213 		tty_dev->gdm[i] = gdm;
214 		tty_port_init(&gdm->port);
216 		gdm->port.ops = &gdm_port_ops;
217 		gdm->index = i;
218 		gdm->minor = j;
219 		gdm->tty_dev = tty_dev;
221 		tty_port_register_device(&gdm->port, gdm_driver[i],
222 					 gdm->minor, device);
226 		gdm->tty_dev->recv_func(gdm->tty_dev->priv_dev,
234 	struct gdm *gdm;
239 		gdm = tty_dev->gdm[i];
240 		if (!gdm)
244 		gdm_table[gdm->index][gdm->minor] = NULL;
247 		tty = tty_port_tty_get(&gdm->port);
253 		tty_unregister_device(gdm_driver[i], gdm->minor);
254 		tty_port_put(&gdm->port);