Lines Matching +full:activate +full:- +full:to +full:- +full:activate

1 /* SPDX-License-Identifier: GPL-2.0 */
17  * struct tty_port_operations -- operations on tty_port
21  *	port was initialized. Do not use to free resources. Turn off the device
22  *	only. Called under the port mutex to serialize against @activate and
24  * @activate: called under the port mutex from tty_port_open(), serialized using
25  *	the port mutex. Supposed to turn on the device.
37 	int (*activate)(struct tty_port *port, struct tty_struct *tty);  member
52  * struct tty_port -- port level information
55  * @tty: back pointer to &struct tty_struct, valid only if the tty is open. Use
56  *	 tty_port_tty_get() to obtain it (and tty_kref_put() to release).
57  * @itty: internal back pointer to &struct tty_struct. Avoid this. It should be
59  * @ops: tty port operations (like activate, shutdown), see &struct
75  * @close_delay: delay in jiffies to wait when closing the port
76  * @closing_wait: delay in jiffies for output to be sent before closing
77  * @drain_delay: set to zero if no pure time based drain is needed else set to
79  * @kref: references counter. Reaching zero calls @ops->destruct() if non-%NULL
81  * @client_data: pointer to private data, for @client_ops
87  * The tty port has a different lifetime to the tty so must be kept apart.
88  * In addition be careful as tty -> port mappings are valid for the life
89  * of the tty object but in many cases port -> tty mappings are valid only
95  * There is a lot of helpers around &struct tty_port too. To name the most
98  * tty_port_hangup(). These call @ops->activate() and @ops->shutdown() as
126 /* tty_port::iflags bits -- use atomic bit ops */
133  * for s/w-based flow control steering and carrier detection status
166 	if (port && kref_get_unless_zero(&port->kref))  in tty_port_get()
174 	return test_bit(TTY_PORT_CTS_FLOW, &port->iflags);  in tty_port_cts_enabled()
179 	assign_bit(TTY_PORT_CTS_FLOW, &port->iflags, val);  in tty_port_set_cts_flow()
184 	return test_bit(TTY_PORT_ACTIVE, &port->iflags);  in tty_port_active()
189 	assign_bit(TTY_PORT_ACTIVE, &port->iflags, val);  in tty_port_set_active()
194 	return test_bit(TTY_PORT_CHECK_CD, &port->iflags);  in tty_port_check_carrier()
199 	assign_bit(TTY_PORT_CHECK_CD, &port->iflags, val);  in tty_port_set_check_carrier()
204 	return test_bit(TTY_PORT_SUSPENDED, &port->iflags);  in tty_port_suspended()
209 	assign_bit(TTY_PORT_SUSPENDED, &port->iflags, val);  in tty_port_set_suspended()
214 	return test_bit(TTY_PORT_INITIALIZED, &port->iflags);  in tty_port_initialized()
219 	assign_bit(TTY_PORT_INITIALIZED, &port->iflags, val);  in tty_port_set_initialized()
224 	return test_bit(TTY_PORT_KOPENED, &port->iflags);  in tty_port_kopened()
229 	assign_bit(TTY_PORT_KOPENED, &port->iflags, val);  in tty_port_set_kopened()
254 	return port->count + port->blocked_open;  in tty_port_users()