112 static void lqasc_tx_chars(struct uart_port *port);
118 	struct uart_port	port;  member
129 ltq_uart_port *to_ltq_uart_port(struct uart_port *port)  in to_ltq_uart_port()  argument
131 	return container_of(port, struct ltq_uart_port, port);  in to_ltq_uart_port()
135 lqasc_stop_tx(struct uart_port *port)  in lqasc_stop_tx()  argument
141 lqasc_start_tx(struct uart_port *port)  in lqasc_start_tx()  argument
145 	lqasc_tx_chars(port);  in lqasc_start_tx()
151 lqasc_stop_rx(struct uart_port *port)  in lqasc_stop_rx()  argument
153 	ltq_w32(ASCWHBSTATE_CLRREN, port->membase + LTQ_ASC_WHBSTATE);  in lqasc_stop_rx()
157 lqasc_rx_chars(struct uart_port *port)  in lqasc_rx_chars()  argument
159 	struct tty_port *tport = &port->state->port;  in lqasc_rx_chars()
162 	fifocnt = ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK;  in lqasc_rx_chars()
165 		ch = ltq_r8(port->membase + LTQ_ASC_RBUF);  in lqasc_rx_chars()
166 		rsr = (ltq_r32(port->membase + LTQ_ASC_STATE)  in lqasc_rx_chars()
169 		port->icount.rx++;  in lqasc_rx_chars()
177 				port->icount.parity++;  in lqasc_rx_chars()
179 					port->membase + LTQ_ASC_WHBSTATE);  in lqasc_rx_chars()
181 				port->icount.frame++;  in lqasc_rx_chars()
183 					port->membase + LTQ_ASC_WHBSTATE);  in lqasc_rx_chars()
186 				port->icount.overrun++;  in lqasc_rx_chars()
188 					port->membase + LTQ_ASC_WHBSTATE);  in lqasc_rx_chars()
191 			rsr &= port->read_status_mask;  in lqasc_rx_chars()
199 		if ((rsr & port->ignore_status_mask) == 0)  in lqasc_rx_chars()
218 lqasc_tx_chars(struct uart_port *port)  in lqasc_tx_chars()  argument
220 	struct circ_buf *xmit = &port->state->xmit;  in lqasc_tx_chars()
221 	if (uart_tx_stopped(port)) {  in lqasc_tx_chars()
222 		lqasc_stop_tx(port);  in lqasc_tx_chars()
226 	while (((ltq_r32(port->membase + LTQ_ASC_FSTAT) &  in lqasc_tx_chars()
228 		if (port->x_char) {  in lqasc_tx_chars()
229 			ltq_w8(port->x_char, port->membase + LTQ_ASC_TBUF);  in lqasc_tx_chars()
230 			port->icount.tx++;  in lqasc_tx_chars()
231 			port->x_char = 0;  in lqasc_tx_chars()
238 		ltq_w8(port->state->xmit.buf[port->state->xmit.tail],  in lqasc_tx_chars()
239 			port->membase + LTQ_ASC_TBUF);  in lqasc_tx_chars()
241 		port->icount.tx++;  in lqasc_tx_chars()
245 		uart_write_wakeup(port);  in lqasc_tx_chars()
252 	struct uart_port *port = (struct uart_port *)_port;  in lqasc_tx_int()  local
254 	ltq_w32(ASC_IRNCR_TIR, port->membase + LTQ_ASC_IRNCR);  in lqasc_tx_int()
256 	lqasc_start_tx(port);  in lqasc_tx_int()
264 	struct uart_port *port = (struct uart_port *)_port;  in lqasc_err_int()  local
268 		ASCWHBSTATE_CLRROE, port->membase + LTQ_ASC_WHBSTATE);  in lqasc_err_int()
277 	struct uart_port *port = (struct uart_port *)_port;  in lqasc_rx_int()  local
279 	ltq_w32(ASC_IRNCR_RIR, port->membase + LTQ_ASC_IRNCR);  in lqasc_rx_int()
280 	lqasc_rx_chars(port);  in lqasc_rx_int()
286 lqasc_tx_empty(struct uart_port *port)  in lqasc_tx_empty()  argument
289 	status = ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_TXFFLMASK;  in lqasc_tx_empty()
294 lqasc_get_mctrl(struct uart_port *port)  in lqasc_get_mctrl()  argument
300 lqasc_set_mctrl(struct uart_port *port, u_int mctrl)  in lqasc_set_mctrl()  argument
305 lqasc_break_ctl(struct uart_port *port, int break_state)  in lqasc_break_ctl()  argument
310 lqasc_startup(struct uart_port *port)  in lqasc_startup()  argument
312 	struct ltq_uart_port *ltq_port = to_ltq_uart_port(port);  in lqasc_startup()
317 	port->uartclk = clk_get_rate(ltq_port->fpiclk);  in lqasc_startup()
320 		port->membase + LTQ_ASC_CLC);  in lqasc_startup()
322 	ltq_w32(0, port->membase + LTQ_ASC_PISEL);  in lqasc_startup()
326 		port->membase + LTQ_ASC_TXFCON);  in lqasc_startup()
330 		port->membase + LTQ_ASC_RXFCON);  in lqasc_startup()
336 		ASCCON_ROEN, port->membase + LTQ_ASC_CON);  in lqasc_startup()
339 		0, "asc_tx", port);  in lqasc_startup()
346 		0, "asc_rx", port);  in lqasc_startup()
353 		0, "asc_err", port);  in lqasc_startup()
360 		port->membase + LTQ_ASC_IRNREN);  in lqasc_startup()
364 	free_irq(ltq_port->rx_irq, port);  in lqasc_startup()
366 	free_irq(ltq_port->tx_irq, port);  in lqasc_startup()
371 lqasc_shutdown(struct uart_port *port)  in lqasc_shutdown()  argument
373 	struct ltq_uart_port *ltq_port = to_ltq_uart_port(port);  in lqasc_shutdown()
374 	free_irq(ltq_port->tx_irq, port);  in lqasc_shutdown()
375 	free_irq(ltq_port->rx_irq, port);  in lqasc_shutdown()
376 	free_irq(ltq_port->err_irq, port);  in lqasc_shutdown()
378 	ltq_w32(0, port->membase + LTQ_ASC_CON);  in lqasc_shutdown()
380 		port->membase + LTQ_ASC_RXFCON);  in lqasc_shutdown()
382 		port->membase + LTQ_ASC_TXFCON);  in lqasc_shutdown()
388 lqasc_set_termios(struct uart_port *port,  in lqasc_set_termios()  argument
427 	port->read_status_mask = ASCSTATE_ROE;  in lqasc_set_termios()
429 		port->read_status_mask |= ASCSTATE_FE | ASCSTATE_PE;  in lqasc_set_termios()
431 	port->ignore_status_mask = 0;  in lqasc_set_termios()
433 		port->ignore_status_mask |= ASCSTATE_FE | ASCSTATE_PE;  in lqasc_set_termios()
441 			port->ignore_status_mask |= ASCSTATE_ROE;  in lqasc_set_termios()
445 		port->ignore_status_mask |= UART_DUMMY_UER_RX;  in lqasc_set_termios()
453 	ltq_w32_mask(0, con, port->membase + LTQ_ASC_CON);  in lqasc_set_termios()
456 	baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);  in lqasc_set_termios()
457 	divisor = uart_get_divisor(port, baud);  in lqasc_set_termios()
461 	ltq_w32_mask(ASCCON_R, 0, port->membase + LTQ_ASC_CON);  in lqasc_set_termios()
464 	ltq_w32_mask(ASCCON_FDE, 0, port->membase + LTQ_ASC_CON);  in lqasc_set_termios()
467 	ltq_w32_mask(ASCCON_BRS, 0, port->membase + LTQ_ASC_CON);  in lqasc_set_termios()
470 	ltq_w32(divisor, port->membase + LTQ_ASC_BG);  in lqasc_set_termios()
473 	ltq_w32_mask(0, ASCCON_R, port->membase + LTQ_ASC_CON);  in lqasc_set_termios()
476 	ltq_w32(ASCWHBSTATE_SETREN, port->membase + LTQ_ASC_WHBSTATE);  in lqasc_set_termios()
484 	uart_update_timeout(port, cflag, baud);  in lqasc_set_termios()
488 lqasc_type(struct uart_port *port)  in lqasc_type()  argument
490 	if (port->type == PORT_LTQ_ASC)  in lqasc_type()
497 lqasc_release_port(struct uart_port *port)  in lqasc_release_port()  argument
499 	struct platform_device *pdev = to_platform_device(port->dev);  in lqasc_release_port()
501 	if (port->flags & UPF_IOREMAP) {  in lqasc_release_port()
502 		devm_iounmap(&pdev->dev, port->membase);  in lqasc_release_port()
503 		port->membase = NULL;  in lqasc_release_port()
508 lqasc_request_port(struct uart_port *port)  in lqasc_request_port()  argument
510 	struct platform_device *pdev = to_platform_device(port->dev);  in lqasc_request_port()
528 	if (port->flags & UPF_IOREMAP) {  in lqasc_request_port()
529 		port->membase = devm_ioremap_nocache(&pdev->dev,  in lqasc_request_port()
530 			port->mapbase, size);  in lqasc_request_port()
531 		if (port->membase == NULL)  in lqasc_request_port()
538 lqasc_config_port(struct uart_port *port, int flags)  in lqasc_config_port()  argument
541 		port->type = PORT_LTQ_ASC;  in lqasc_config_port()
542 		lqasc_request_port(port);  in lqasc_config_port()
547 lqasc_verify_port(struct uart_port *port,  in lqasc_verify_port()  argument
579 lqasc_console_putchar(struct uart_port *port, int ch)  in lqasc_console_putchar()  argument
583 	if (!port->membase)  in lqasc_console_putchar()
587 		fifofree = (ltq_r32(port->membase + LTQ_ASC_FSTAT)  in lqasc_console_putchar()
590 	ltq_w8(ch, port->membase + LTQ_ASC_TBUF);  in lqasc_console_putchar()
598 	struct uart_port *port;  in lqasc_console_write()  local
608 	port = &ltq_port->port;  in lqasc_console_write()
611 	uart_console_write(port, s, count, lqasc_console_putchar);  in lqasc_console_write()
619 	struct uart_port *port;  in lqasc_console_setup()  local
632 	port = &ltq_port->port;  in lqasc_console_setup()
637 	port->uartclk = clk_get_rate(ltq_port->fpiclk);  in lqasc_console_setup()
641 	return uart_set_options(port, co, baud, parity, bits, flow);  in lqasc_console_setup()
677 	struct uart_port *port;  in lqasc_probe()  local
704 	port = &ltq_port->port;  in lqasc_probe()
706 	port->iotype	= SERIAL_IO_MEM;  in lqasc_probe()
707 	port->flags	= UPF_BOOT_AUTOCONF | UPF_IOREMAP;  in lqasc_probe()
708 	port->ops	= &lqasc_pops;  in lqasc_probe()
709 	port->fifosize	= 16;  in lqasc_probe()
710 	port->type	= PORT_LTQ_ASC,  in lqasc_probe()
711 	port->line	= line;  in lqasc_probe()
712 	port->dev	= &pdev->dev;  in lqasc_probe()
714 	port->irq	= irqres[0].start;  in lqasc_probe()
715 	port->mapbase	= mmres->start;  in lqasc_probe()
733 	ret = uart_add_one_port(&lqasc_reg, port);  in lqasc_probe()