113 static void lqasc_tx_chars(struct uart_port *port);
119 	struct uart_port	port;  member
130 ltq_uart_port *to_ltq_uart_port(struct uart_port *port)  in to_ltq_uart_port()  argument
132 	return container_of(port, struct ltq_uart_port, port);  in to_ltq_uart_port()
136 lqasc_stop_tx(struct uart_port *port)  in lqasc_stop_tx()  argument
142 lqasc_start_tx(struct uart_port *port)  in lqasc_start_tx()  argument
146 	lqasc_tx_chars(port);  in lqasc_start_tx()
152 lqasc_stop_rx(struct uart_port *port)  in lqasc_stop_rx()  argument
154 	ltq_w32(ASCWHBSTATE_CLRREN, port->membase + LTQ_ASC_WHBSTATE);  in lqasc_stop_rx()
158 lqasc_rx_chars(struct uart_port *port)  in lqasc_rx_chars()  argument
160 	struct tty_port *tport = &port->state->port;  in lqasc_rx_chars()
163 	fifocnt = ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_RXFFLMASK;  in lqasc_rx_chars()
166 		ch = ltq_r8(port->membase + LTQ_ASC_RBUF);  in lqasc_rx_chars()
167 		rsr = (ltq_r32(port->membase + LTQ_ASC_STATE)  in lqasc_rx_chars()
170 		port->icount.rx++;  in lqasc_rx_chars()
178 				port->icount.parity++;  in lqasc_rx_chars()
180 					port->membase + LTQ_ASC_WHBSTATE);  in lqasc_rx_chars()
182 				port->icount.frame++;  in lqasc_rx_chars()
184 					port->membase + LTQ_ASC_WHBSTATE);  in lqasc_rx_chars()
187 				port->icount.overrun++;  in lqasc_rx_chars()
189 					port->membase + LTQ_ASC_WHBSTATE);  in lqasc_rx_chars()
192 			rsr &= port->read_status_mask;  in lqasc_rx_chars()
200 		if ((rsr & port->ignore_status_mask) == 0)  in lqasc_rx_chars()
219 lqasc_tx_chars(struct uart_port *port)  in lqasc_tx_chars()  argument
221 	struct circ_buf *xmit = &port->state->xmit;  in lqasc_tx_chars()
222 	if (uart_tx_stopped(port)) {  in lqasc_tx_chars()
223 		lqasc_stop_tx(port);  in lqasc_tx_chars()
227 	while (((ltq_r32(port->membase + LTQ_ASC_FSTAT) &  in lqasc_tx_chars()
229 		if (port->x_char) {  in lqasc_tx_chars()
230 			ltq_w8(port->x_char, port->membase + LTQ_ASC_TBUF);  in lqasc_tx_chars()
231 			port->icount.tx++;  in lqasc_tx_chars()
232 			port->x_char = 0;  in lqasc_tx_chars()
239 		ltq_w8(port->state->xmit.buf[port->state->xmit.tail],  in lqasc_tx_chars()
240 			port->membase + LTQ_ASC_TBUF);  in lqasc_tx_chars()
242 		port->icount.tx++;  in lqasc_tx_chars()
246 		uart_write_wakeup(port);  in lqasc_tx_chars()
253 	struct uart_port *port = (struct uart_port *)_port;  in lqasc_tx_int()  local
255 	ltq_w32(ASC_IRNCR_TIR, port->membase + LTQ_ASC_IRNCR);  in lqasc_tx_int()
257 	lqasc_start_tx(port);  in lqasc_tx_int()
265 	struct uart_port *port = (struct uart_port *)_port;  in lqasc_err_int()  local
269 		ASCWHBSTATE_CLRROE, port->membase + LTQ_ASC_WHBSTATE);  in lqasc_err_int()
278 	struct uart_port *port = (struct uart_port *)_port;  in lqasc_rx_int()  local
280 	ltq_w32(ASC_IRNCR_RIR, port->membase + LTQ_ASC_IRNCR);  in lqasc_rx_int()
281 	lqasc_rx_chars(port);  in lqasc_rx_int()
287 lqasc_tx_empty(struct uart_port *port)  in lqasc_tx_empty()  argument
290 	status = ltq_r32(port->membase + LTQ_ASC_FSTAT) & ASCFSTAT_TXFFLMASK;  in lqasc_tx_empty()
295 lqasc_get_mctrl(struct uart_port *port)  in lqasc_get_mctrl()  argument
301 lqasc_set_mctrl(struct uart_port *port, u_int mctrl)  in lqasc_set_mctrl()  argument
306 lqasc_break_ctl(struct uart_port *port, int break_state)  in lqasc_break_ctl()  argument
311 lqasc_startup(struct uart_port *port)  in lqasc_startup()  argument
313 	struct ltq_uart_port *ltq_port = to_ltq_uart_port(port);  in lqasc_startup()
318 	port->uartclk = clk_get_rate(ltq_port->fpiclk);  in lqasc_startup()
321 		port->membase + LTQ_ASC_CLC);  in lqasc_startup()
323 	ltq_w32(0, port->membase + LTQ_ASC_PISEL);  in lqasc_startup()
327 		port->membase + LTQ_ASC_TXFCON);  in lqasc_startup()
331 		port->membase + LTQ_ASC_RXFCON);  in lqasc_startup()
337 		ASCCON_ROEN, port->membase + LTQ_ASC_CON);  in lqasc_startup()
340 		0, "asc_tx", port);  in lqasc_startup()
347 		0, "asc_rx", port);  in lqasc_startup()
354 		0, "asc_err", port);  in lqasc_startup()
361 		port->membase + LTQ_ASC_IRNREN);  in lqasc_startup()
365 	free_irq(ltq_port->rx_irq, port);  in lqasc_startup()
367 	free_irq(ltq_port->tx_irq, port);  in lqasc_startup()
372 lqasc_shutdown(struct uart_port *port)  in lqasc_shutdown()  argument
374 	struct ltq_uart_port *ltq_port = to_ltq_uart_port(port);  in lqasc_shutdown()
375 	free_irq(ltq_port->tx_irq, port);  in lqasc_shutdown()
376 	free_irq(ltq_port->rx_irq, port);  in lqasc_shutdown()
377 	free_irq(ltq_port->err_irq, port);  in lqasc_shutdown()
379 	ltq_w32(0, port->membase + LTQ_ASC_CON);  in lqasc_shutdown()
381 		port->membase + LTQ_ASC_RXFCON);  in lqasc_shutdown()
383 		port->membase + LTQ_ASC_TXFCON);  in lqasc_shutdown()
389 lqasc_set_termios(struct uart_port *port,  in lqasc_set_termios()  argument
428 	port->read_status_mask = ASCSTATE_ROE;  in lqasc_set_termios()
430 		port->read_status_mask |= ASCSTATE_FE | ASCSTATE_PE;  in lqasc_set_termios()
432 	port->ignore_status_mask = 0;  in lqasc_set_termios()
434 		port->ignore_status_mask |= ASCSTATE_FE | ASCSTATE_PE;  in lqasc_set_termios()
442 			port->ignore_status_mask |= ASCSTATE_ROE;  in lqasc_set_termios()
446 		port->ignore_status_mask |= UART_DUMMY_UER_RX;  in lqasc_set_termios()
454 	ltq_w32_mask(0, con, port->membase + LTQ_ASC_CON);  in lqasc_set_termios()
457 	baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);  in lqasc_set_termios()
458 	divisor = uart_get_divisor(port, baud);  in lqasc_set_termios()
462 	ltq_w32_mask(ASCCON_R, 0, port->membase + LTQ_ASC_CON);  in lqasc_set_termios()
465 	ltq_w32_mask(ASCCON_FDE, 0, port->membase + LTQ_ASC_CON);  in lqasc_set_termios()
468 	ltq_w32_mask(ASCCON_BRS, 0, port->membase + LTQ_ASC_CON);  in lqasc_set_termios()
471 	ltq_w32(divisor, port->membase + LTQ_ASC_BG);  in lqasc_set_termios()
474 	ltq_w32_mask(0, ASCCON_R, port->membase + LTQ_ASC_CON);  in lqasc_set_termios()
477 	ltq_w32(ASCWHBSTATE_SETREN, port->membase + LTQ_ASC_WHBSTATE);  in lqasc_set_termios()
485 	uart_update_timeout(port, cflag, baud);  in lqasc_set_termios()
489 lqasc_type(struct uart_port *port)  in lqasc_type()  argument
491 	if (port->type == PORT_LTQ_ASC)  in lqasc_type()
498 lqasc_release_port(struct uart_port *port)  in lqasc_release_port()  argument
500 	struct platform_device *pdev = to_platform_device(port->dev);  in lqasc_release_port()
502 	if (port->flags & UPF_IOREMAP) {  in lqasc_release_port()
503 		devm_iounmap(&pdev->dev, port->membase);  in lqasc_release_port()
504 		port->membase = NULL;  in lqasc_release_port()
509 lqasc_request_port(struct uart_port *port)  in lqasc_request_port()  argument
511 	struct platform_device *pdev = to_platform_device(port->dev);  in lqasc_request_port()
529 	if (port->flags & UPF_IOREMAP) {  in lqasc_request_port()
530 		port->membase = devm_ioremap_nocache(&pdev->dev,  in lqasc_request_port()
531 			port->mapbase, size);  in lqasc_request_port()
532 		if (port->membase == NULL)  in lqasc_request_port()
539 lqasc_config_port(struct uart_port *port, int flags)  in lqasc_config_port()  argument
542 		port->type = PORT_LTQ_ASC;  in lqasc_config_port()
543 		lqasc_request_port(port);  in lqasc_config_port()
548 lqasc_verify_port(struct uart_port *port,  in lqasc_verify_port()  argument
580 lqasc_console_putchar(struct uart_port *port, int ch)  in lqasc_console_putchar()  argument
584 	if (!port->membase)  in lqasc_console_putchar()
588 		fifofree = (ltq_r32(port->membase + LTQ_ASC_FSTAT)  in lqasc_console_putchar()
591 	ltq_w8(ch, port->membase + LTQ_ASC_TBUF);  in lqasc_console_putchar()
599 	struct uart_port *port;  in lqasc_console_write()  local
609 	port = &ltq_port->port;  in lqasc_console_write()
612 	uart_console_write(port, s, count, lqasc_console_putchar);  in lqasc_console_write()
620 	struct uart_port *port;  in lqasc_console_setup()  local
633 	port = &ltq_port->port;  in lqasc_console_setup()
638 	port->uartclk = clk_get_rate(ltq_port->fpiclk);  in lqasc_console_setup()
642 	return uart_set_options(port, co, baud, parity, bits, flow);  in lqasc_console_setup()
678 	struct uart_port *port;  in lqasc_probe()  local
705 	port = &ltq_port->port;  in lqasc_probe()
707 	port->iotype	= SERIAL_IO_MEM;  in lqasc_probe()
708 	port->flags	= UPF_BOOT_AUTOCONF | UPF_IOREMAP;  in lqasc_probe()
709 	port->ops	= &lqasc_pops;  in lqasc_probe()
710 	port->fifosize	= 16;  in lqasc_probe()
711 	port->type	= PORT_LTQ_ASC,  in lqasc_probe()
712 	port->line	= line;  in lqasc_probe()
713 	port->dev	= &pdev->dev;  in lqasc_probe()
715 	port->irq	= irqres[0].start;  in lqasc_probe()
716 	port->mapbase	= mmres->start;  in lqasc_probe()
734 	ret = uart_add_one_port(&lqasc_reg, port);  in lqasc_probe()