43 #define tx_enabled(port)	((port)->unused[0])  argument
44 #define rx_enabled(port)	((port)->unused[1])  argument
57 static void serial21285_stop_tx(struct uart_port *port)  in serial21285_stop_tx()  argument
59 	if (tx_enabled(port)) {  in serial21285_stop_tx()
61 		tx_enabled(port) = 0;  in serial21285_stop_tx()
65 static void serial21285_start_tx(struct uart_port *port)  in serial21285_start_tx()  argument
67 	if (!tx_enabled(port)) {  in serial21285_start_tx()
69 		tx_enabled(port) = 1;  in serial21285_start_tx()
73 static void serial21285_stop_rx(struct uart_port *port)  in serial21285_stop_rx()  argument
75 	if (rx_enabled(port)) {  in serial21285_stop_rx()
77 		rx_enabled(port) = 0;  in serial21285_stop_rx()
83 	struct uart_port *port = dev_id;  in serial21285_rx_chars()  local
90 		port->icount.rx++;  in serial21285_rx_chars()
95 				port->icount.parity++;  in serial21285_rx_chars()
97 				port->icount.frame++;  in serial21285_rx_chars()
99 				port->icount.overrun++;  in serial21285_rx_chars()
101 			rxs &= port->read_status_mask;  in serial21285_rx_chars()
109 		uart_insert_char(port, rxs, RXSTAT_OVERRUN, ch, flag);  in serial21285_rx_chars()
113 	tty_flip_buffer_push(&port->state->port);  in serial21285_rx_chars()
120 	struct uart_port *port = dev_id;  in serial21285_tx_chars()  local
121 	struct circ_buf *xmit = &port->state->xmit;  in serial21285_tx_chars()
124 	if (port->x_char) {  in serial21285_tx_chars()
125 		*CSR_UARTDR = port->x_char;  in serial21285_tx_chars()
126 		port->icount.tx++;  in serial21285_tx_chars()
127 		port->x_char = 0;  in serial21285_tx_chars()
130 	if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {  in serial21285_tx_chars()
131 		serial21285_stop_tx(port);  in serial21285_tx_chars()
138 		port->icount.tx++;  in serial21285_tx_chars()
144 		uart_write_wakeup(port);  in serial21285_tx_chars()
147 		serial21285_stop_tx(port);  in serial21285_tx_chars()
153 static unsigned int serial21285_tx_empty(struct uart_port *port)  in serial21285_tx_empty()  argument
159 static unsigned int serial21285_get_mctrl(struct uart_port *port)  in serial21285_get_mctrl()  argument
164 static void serial21285_set_mctrl(struct uart_port *port, unsigned int mctrl)  in serial21285_set_mctrl()  argument
168 static void serial21285_break_ctl(struct uart_port *port, int break_state)  in serial21285_break_ctl()  argument
173 	spin_lock_irqsave(&port->lock, flags);  in serial21285_break_ctl()
180 	spin_unlock_irqrestore(&port->lock, flags);  in serial21285_break_ctl()
183 static int serial21285_startup(struct uart_port *port)  in serial21285_startup()  argument
187 	tx_enabled(port) = 1;  in serial21285_startup()
188 	rx_enabled(port) = 1;  in serial21285_startup()
191 			  serial21285_name, port);  in serial21285_startup()
194 				  serial21285_name, port);  in serial21285_startup()
196 			free_irq(IRQ_CONRX, port);  in serial21285_startup()
202 static void serial21285_shutdown(struct uart_port *port)  in serial21285_shutdown()  argument
204 	free_irq(IRQ_CONTX, port);  in serial21285_shutdown()
205 	free_irq(IRQ_CONRX, port);  in serial21285_shutdown()
209 serial21285_set_termios(struct uart_port *port, struct ktermios *termios,  in serial21285_set_termios()  argument
229 	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);   in serial21285_set_termios()
230 	quot = uart_get_divisor(port, baud);  in serial21285_set_termios()
231 	b = port->uartclk / (16 * quot);  in serial21285_set_termios()
257 	if (port->fifosize)  in serial21285_set_termios()
260 	spin_lock_irqsave(&port->lock, flags);  in serial21285_set_termios()
265 	uart_update_timeout(port, termios->c_cflag, baud);  in serial21285_set_termios()
270 	port->read_status_mask = RXSTAT_OVERRUN;  in serial21285_set_termios()
272 		port->read_status_mask |= RXSTAT_FRAME | RXSTAT_PARITY;  in serial21285_set_termios()
277 	port->ignore_status_mask = 0;  in serial21285_set_termios()
279 		port->ignore_status_mask |= RXSTAT_FRAME | RXSTAT_PARITY;  in serial21285_set_termios()
281 		port->ignore_status_mask |= RXSTAT_OVERRUN;  in serial21285_set_termios()
287 		port->ignore_status_mask |= RXSTAT_DUMMY_READ;  in serial21285_set_termios()
297 	spin_unlock_irqrestore(&port->lock, flags);  in serial21285_set_termios()
300 static const char *serial21285_type(struct uart_port *port)  in serial21285_type()  argument
302 	return port->type == PORT_21285 ? "DC21285" : NULL;  in serial21285_type()
305 static void serial21285_release_port(struct uart_port *port)  in serial21285_release_port()  argument
307 	release_mem_region(port->mapbase, 32);  in serial21285_release_port()
310 static int serial21285_request_port(struct uart_port *port)  in serial21285_request_port()  argument
312 	return request_mem_region(port->mapbase, 32, serial21285_name)  in serial21285_request_port()
316 static void serial21285_config_port(struct uart_port *port, int flags)  in serial21285_config_port()  argument
318 	if (flags & UART_CONFIG_TYPE && serial21285_request_port(port) == 0)  in serial21285_config_port()
319 		port->type = PORT_21285;  in serial21285_config_port()
325 static int serial21285_verify_port(struct uart_port *port, struct serial_struct *ser)  in serial21285_verify_port()  argument
332 	if (ser->baud_base != port->uartclk / 16)  in serial21285_verify_port()
370 static void serial21285_console_putchar(struct uart_port *port, int ch)  in serial21285_console_putchar()  argument
385 serial21285_get_options(struct uart_port *port, int *baud,  in serial21285_get_options()  argument
416 		*baud = port->uartclk / (16 * (tmp + 1));  in serial21285_get_options()
422 	struct uart_port *port = &serial21285_port;  in serial21285_console_setup()  local
439 		serial21285_get_options(port, &baud, &parity, &bits);  in serial21285_console_setup()
441 	return uart_set_options(port, co, baud, parity, bits, flow);  in serial21285_console_setup()