65 static inline int tx_enabled(struct uart_port *port)  in tx_enabled()  argument
67 	return port->unused[0] & 1;  in tx_enabled()
70 static inline int rx_enabled(struct uart_port *port)  in rx_enabled()  argument
72 	return port->unused[0] & 2;  in rx_enabled()
75 static inline int ms_enabled(struct uart_port *port)  in ms_enabled()  argument
77 	return port->unused[0] & 4;  in ms_enabled()
80 static inline void ms_enable(struct uart_port *port, int enabled)  in ms_enable()  argument
83 		port->unused[0] |= 4;  in ms_enable()
85 		port->unused[0] &= ~4;  in ms_enable()
88 static inline void rx_enable(struct uart_port *port, int enabled)  in rx_enable()  argument
91 		port->unused[0] |= 2;  in rx_enable()
93 		port->unused[0] &= ~2;  in rx_enable()
96 static inline void tx_enable(struct uart_port *port, int enabled)  in tx_enable()  argument
99 		port->unused[0] |= 1;  in tx_enable()
101 		port->unused[0] &= ~1;  in tx_enable()
109 static void ks8695uart_stop_tx(struct uart_port *port)  in ks8695uart_stop_tx()  argument
111 	if (tx_enabled(port)) {  in ks8695uart_stop_tx()
117 		tx_enable(port, 0);  in ks8695uart_stop_tx()
121 static void ks8695uart_start_tx(struct uart_port *port)  in ks8695uart_start_tx()  argument
123 	if (!tx_enabled(port)) {  in ks8695uart_start_tx()
125 		tx_enable(port, 1);  in ks8695uart_start_tx()
129 static void ks8695uart_stop_rx(struct uart_port *port)  in ks8695uart_stop_rx()  argument
131 	if (rx_enabled(port)) {  in ks8695uart_stop_rx()
133 		rx_enable(port, 0);  in ks8695uart_stop_rx()
137 static void ks8695uart_enable_ms(struct uart_port *port)  in ks8695uart_enable_ms()  argument
139 	if (!ms_enabled(port)) {  in ks8695uart_enable_ms()
141 		ms_enable(port,1);  in ks8695uart_enable_ms()
145 static void ks8695uart_disable_ms(struct uart_port *port)  in ks8695uart_disable_ms()  argument
147 	if (ms_enabled(port)) {  in ks8695uart_disable_ms()
149 		ms_enable(port,0);  in ks8695uart_disable_ms()
155 	struct uart_port *port = dev_id;  in ks8695uart_rx_chars()  local
158 	status = UART_GET_LSR(port);		/* clears pending LSR interrupts */  in ks8695uart_rx_chars()
160 		ch = UART_GET_CHAR(port);  in ks8695uart_rx_chars()
163 		port->icount.rx++;  in ks8695uart_rx_chars()
169 		lsr = UART_GET_LSR(port) | UART_DUMMY_LSR_RX;  in ks8695uart_rx_chars()
173 				port->icount.brk++;  in ks8695uart_rx_chars()
174 				if (uart_handle_break(port))  in ks8695uart_rx_chars()
178 				port->icount.parity++;  in ks8695uart_rx_chars()
180 				port->icount.frame++;  in ks8695uart_rx_chars()
182 				port->icount.overrun++;  in ks8695uart_rx_chars()
184 			lsr &= port->read_status_mask;  in ks8695uart_rx_chars()
194 		if (uart_handle_sysrq_char(port, ch))  in ks8695uart_rx_chars()
197 		uart_insert_char(port, lsr, URLS_URROE, ch, flg);  in ks8695uart_rx_chars()
200 		status = UART_GET_LSR(port);  in ks8695uart_rx_chars()
202 	tty_flip_buffer_push(&port->state->port);  in ks8695uart_rx_chars()
210 	struct uart_port *port = dev_id;  in ks8695uart_tx_chars()  local
211 	struct circ_buf *xmit = &port->state->xmit;  in ks8695uart_tx_chars()
214 	if (port->x_char) {  in ks8695uart_tx_chars()
216 		UART_PUT_CHAR(port, port->x_char);  in ks8695uart_tx_chars()
217 		port->icount.tx++;  in ks8695uart_tx_chars()
218 		port->x_char = 0;  in ks8695uart_tx_chars()
222 	if (uart_tx_stopped(port) || uart_circ_empty(xmit)) {  in ks8695uart_tx_chars()
223 		ks8695uart_stop_tx(port);  in ks8695uart_tx_chars()
230 		UART_PUT_CHAR(port, xmit->buf[xmit->tail]);  in ks8695uart_tx_chars()
233 		port->icount.tx++;  in ks8695uart_tx_chars()
237 		uart_write_wakeup(port);  in ks8695uart_tx_chars()
240 		ks8695uart_stop_tx(port);  in ks8695uart_tx_chars()
247 	struct uart_port *port = dev_id;  in ks8695uart_modem_status()  local
253 	status = UART_GET_MSR(port);  in ks8695uart_modem_status()
256 		uart_handle_dcd_change(port, status & URMS_URDDCD);  in ks8695uart_modem_status()
259 		port->icount.dsr++;  in ks8695uart_modem_status()
262 		uart_handle_cts_change(port, status & URMS_URDCTS);  in ks8695uart_modem_status()
265 		port->icount.rng++;  in ks8695uart_modem_status()
267 	wake_up_interruptible(&port->state->port.delta_msr_wait);  in ks8695uart_modem_status()
272 static unsigned int ks8695uart_tx_empty(struct uart_port *port)  in ks8695uart_tx_empty()  argument
274 	return (UART_GET_LSR(port) & URLS_URTE) ? TIOCSER_TEMT : 0;  in ks8695uart_tx_empty()
277 static unsigned int ks8695uart_get_mctrl(struct uart_port *port)  in ks8695uart_get_mctrl()  argument
282 	status = UART_GET_MSR(port);  in ks8695uart_get_mctrl()
295 static void ks8695uart_set_mctrl(struct uart_port *port, u_int mctrl)  in ks8695uart_set_mctrl()  argument
299 	mcr = UART_GET_MCR(port);  in ks8695uart_set_mctrl()
310 	UART_PUT_MCR(port, mcr);  in ks8695uart_set_mctrl()
313 static void ks8695uart_break_ctl(struct uart_port *port, int break_state)  in ks8695uart_break_ctl()  argument
317 	lcr = UART_GET_LCR(port);  in ks8695uart_break_ctl()
324 	UART_PUT_LCR(port, lcr);  in ks8695uart_break_ctl()
327 static int ks8695uart_startup(struct uart_port *port)  in ks8695uart_startup()  argument
332 	tx_enable(port, 0);  in ks8695uart_startup()
333 	rx_enable(port, 1);  in ks8695uart_startup()
334 	ms_enable(port, 1);  in ks8695uart_startup()
339 	retval = request_irq(KS8695_IRQ_UART_TX, ks8695uart_tx_chars, 0, "UART TX", port);  in ks8695uart_startup()
343 	retval = request_irq(KS8695_IRQ_UART_RX, ks8695uart_rx_chars, 0, "UART RX", port);  in ks8695uart_startup()
347 	retval = request_irq(KS8695_IRQ_UART_LINE_STATUS, ks8695uart_rx_chars, 0, "UART LineStatus", port);  in ks8695uart_startup()
351 … = request_irq(KS8695_IRQ_UART_MODEM_STATUS, ks8695uart_modem_status, 0, "UART ModemStatus", port);  in ks8695uart_startup()
358 	free_irq(KS8695_IRQ_UART_LINE_STATUS, port);  in ks8695uart_startup()
360 	free_irq(KS8695_IRQ_UART_RX, port);  in ks8695uart_startup()
362 	free_irq(KS8695_IRQ_UART_TX, port);  in ks8695uart_startup()
367 static void ks8695uart_shutdown(struct uart_port *port)  in ks8695uart_shutdown()  argument
372 	free_irq(KS8695_IRQ_UART_RX, port);  in ks8695uart_shutdown()
373 	free_irq(KS8695_IRQ_UART_TX, port);  in ks8695uart_shutdown()
374 	free_irq(KS8695_IRQ_UART_MODEM_STATUS, port);  in ks8695uart_shutdown()
375 	free_irq(KS8695_IRQ_UART_LINE_STATUS, port);  in ks8695uart_shutdown()
378 	UART_PUT_LCR(port, UART_GET_LCR(port) & ~URLC_URSBC);  in ks8695uart_shutdown()
379 	UART_PUT_FCR(port, UART_GET_FCR(port) & ~URFC_URFE);  in ks8695uart_shutdown()
382 static void ks8695uart_set_termios(struct uart_port *port, struct ktermios *termios, struct ktermio…  in ks8695uart_set_termios()  argument
391 	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16);  in ks8695uart_set_termios()
392 	quot = uart_get_divisor(port, baud);  in ks8695uart_set_termios()
427 	if (port->fifosize > 1)  in ks8695uart_set_termios()
430 	spin_lock_irqsave(&port->lock, flags);  in ks8695uart_set_termios()
435 	uart_update_timeout(port, termios->c_cflag, baud);  in ks8695uart_set_termios()
437 	port->read_status_mask = URLS_URROE;  in ks8695uart_set_termios()
439 		port->read_status_mask |= (URLS_URFE | URLS_URPE);  in ks8695uart_set_termios()
441 		port->read_status_mask |= URLS_URBI;  in ks8695uart_set_termios()
446 	port->ignore_status_mask = 0;  in ks8695uart_set_termios()
448 		port->ignore_status_mask |= (URLS_URFE | URLS_URPE);  in ks8695uart_set_termios()
450 		port->ignore_status_mask |= URLS_URBI;  in ks8695uart_set_termios()
456 			port->ignore_status_mask |= URLS_URROE;  in ks8695uart_set_termios()
463 		port->ignore_status_mask |= UART_DUMMY_LSR_RX;  in ks8695uart_set_termios()
466 	if (UART_ENABLE_MS(port, termios->c_cflag))  in ks8695uart_set_termios()
467 		ks8695uart_enable_ms(port);  in ks8695uart_set_termios()
469 		ks8695uart_disable_ms(port);  in ks8695uart_set_termios()
472 	UART_PUT_BRDR(port, quot);  in ks8695uart_set_termios()
474 	UART_PUT_LCR(port, lcr);  in ks8695uart_set_termios()
475 	UART_PUT_FCR(port, fcr);  in ks8695uart_set_termios()
477 	spin_unlock_irqrestore(&port->lock, flags);  in ks8695uart_set_termios()
480 static const char *ks8695uart_type(struct uart_port *port)  in ks8695uart_type()  argument
482 	return port->type == PORT_KS8695 ? "KS8695" : NULL;  in ks8695uart_type()
488 static void ks8695uart_release_port(struct uart_port *port)  in ks8695uart_release_port()  argument
490 	release_mem_region(port->mapbase, UART_PORT_SIZE);  in ks8695uart_release_port()
496 static int ks8695uart_request_port(struct uart_port *port)  in ks8695uart_request_port()  argument
498 	return request_mem_region(port->mapbase, UART_PORT_SIZE,  in ks8695uart_request_port()
505 static void ks8695uart_config_port(struct uart_port *port, int flags)  in ks8695uart_config_port()  argument
508 		port->type = PORT_KS8695;  in ks8695uart_config_port()
509 		ks8695uart_request_port(port);  in ks8695uart_config_port()
516 static int ks8695uart_verify_port(struct uart_port *port, struct serial_struct *ser)  in ks8695uart_verify_port()  argument
522 	if (ser->irq != port->irq)  in ks8695uart_verify_port()
563 static void ks8695_console_putchar(struct uart_port *port, int ch)  in ks8695_console_putchar()  argument
565 	while (!(UART_GET_LSR(port) & URLS_URTHRE))  in ks8695_console_putchar()
568 	UART_PUT_CHAR(port, ch);  in ks8695_console_putchar()
573 	struct uart_port *port = ks8695uart_ports + co->index;  in ks8695_console_write()  local
575 	uart_console_write(port, s, count, ks8695_console_putchar);  in ks8695_console_write()
578 static void __init ks8695_console_get_options(struct uart_port *port, int *baud, int *parity, int *…  in ks8695_console_get_options()  argument
582 	lcr = UART_GET_LCR(port);  in ks8695_console_get_options()
609 	*baud = port->uartclk / (UART_GET_BRDR(port) & 0x0FFF);  in ks8695_console_get_options()
616 	struct uart_port *port;  in ks8695_console_setup()  local
627 	port = uart_get_console(ks8695uart_ports, SERIAL_KS8695_NR, co);  in ks8695_console_setup()
632 		ks8695_console_get_options(port, &baud, &parity, &bits);  in ks8695_console_setup()
634 	return uart_set_options(port, co, baud, parity, bits, flow);  in ks8695_console_setup()