drivers/tty/goldfish.c

11 #include <linux/tty.h>
22 /* Goldfish tty register's offsets */
30 /* Goldfish tty commands */
102 				dev_err(qtty->dev, "tty: DMA mapping error.\n");
150 static int goldfish_tty_activate(struct tty_port *port, struct tty_struct *tty)
165 static int goldfish_tty_open(struct tty_struct *tty, struct file *filp)
167 	struct goldfish_tty *qtty = &goldfish_ttys[tty->index];
168 	return tty_port_open(&qtty->port, tty, filp);
171 static void goldfish_tty_close(struct tty_struct *tty, struct file *filp)
173 	tty_port_close(tty->port, tty, filp);
176 static void goldfish_tty_hangup(struct tty_struct *tty)
178 	tty_port_hangup(tty->port);
181 static ssize_t goldfish_tty_write(struct tty_struct *tty, const u8 *buf,
184 	goldfish_tty_do_write(tty->index, buf, count);
188 static unsigned int goldfish_tty_write_room(struct tty_struct *tty)
193 static unsigned int goldfish_tty_chars_in_buffer(struct tty_struct *tty)
195 	struct goldfish_tty *qtty = &goldfish_ttys[tty->index];
239 	struct tty_driver *tty;
248 	tty = tty_alloc_driver(goldfish_tty_line_count,
251 	if (IS_ERR(tty)) {
252 		ret = PTR_ERR(tty);
255 	tty->driver_name = "goldfish";
256 	tty->name = "ttyGF";
257 	tty->type = TTY_DRIVER_TYPE_SERIAL;
258 	tty->subtype = SERIAL_TYPE_NORMAL;
259 	tty->init_termios = tty_std_termios;
260 	tty_set_operations(tty, &goldfish_tty_ops);
261 	ret = tty_register_driver(tty);
265 	goldfish_tty_driver = tty;
269 	tty_driver_kref_put(tty);
322 		pr_err("goldfish_tty: Reached maximum tty number of %d.\n",
452 OF_EARLYCON_DECLARE(early_gf_tty, "google,goldfish-tty", gf_earlycon_setup);
456 	{ .compatible = "google,goldfish-tty", },