81 	struct uart_port port;  member
86 #define to_efm_port(_port) container_of(_port, struct efm32_uart_port, port)
88 	dev_dbg(efm_port->port.dev, format, ##arg)
93 	writel_relaxed(value, efm_port->port.membase + offset);  in efm32_uart_write32()
99 	return readl_relaxed(efm_port->port.membase + offset);  in efm32_uart_read32()
102 static unsigned int efm32_uart_tx_empty(struct uart_port *port)  in efm32_uart_tx_empty()  argument
104 	struct efm32_uart_port *efm_port = to_efm_port(port);  in efm32_uart_tx_empty()
113 static void efm32_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)  in efm32_uart_set_mctrl()  argument
118 static unsigned int efm32_uart_get_mctrl(struct uart_port *port)  in efm32_uart_get_mctrl()  argument
124 static void efm32_uart_stop_tx(struct uart_port *port)  in efm32_uart_stop_tx()  argument
126 	struct efm32_uart_port *efm_port = to_efm_port(port);  in efm32_uart_stop_tx()
136 	struct uart_port *port = &efm_port->port;  in efm32_uart_tx_chars()  local
137 	struct circ_buf *xmit = &port->state->xmit;  in efm32_uart_tx_chars()
141 		if (port->x_char) {  in efm32_uart_tx_chars()
142 			port->icount.tx++;  in efm32_uart_tx_chars()
143 			efm32_uart_write32(efm_port, port->x_char,  in efm32_uart_tx_chars()
145 			port->x_char = 0;  in efm32_uart_tx_chars()
148 		if (!uart_circ_empty(xmit) && !uart_tx_stopped(port)) {  in efm32_uart_tx_chars()
149 			port->icount.tx++;  in efm32_uart_tx_chars()
158 		uart_write_wakeup(port);  in efm32_uart_tx_chars()
160 	if (!port->x_char && uart_circ_empty(xmit) &&  in efm32_uart_tx_chars()
163 		efm32_uart_stop_tx(port);  in efm32_uart_tx_chars()
166 static void efm32_uart_start_tx(struct uart_port *port)  in efm32_uart_start_tx()  argument
168 	struct efm32_uart_port *efm_port = to_efm_port(port);  in efm32_uart_start_tx()
181 static void efm32_uart_stop_rx(struct uart_port *port)  in efm32_uart_stop_rx()  argument
183 	struct efm32_uart_port *efm_port = to_efm_port(port);  in efm32_uart_stop_rx()
188 static void efm32_uart_break_ctl(struct uart_port *port, int ctl)  in efm32_uart_break_ctl()  argument
195 	struct uart_port *port = &efm_port->port;  in efm32_uart_rx_chars()  local
210 		port->icount.rx++;  in efm32_uart_rx_chars()
215 			port->icount.brk++;  in efm32_uart_rx_chars()
216 			if (uart_handle_break(port))  in efm32_uart_rx_chars()
219 			port->icount.parity++;  in efm32_uart_rx_chars()
221 			port->icount.frame++;  in efm32_uart_rx_chars()
223 		rxdata &= port->read_status_mask;  in efm32_uart_rx_chars()
231 		else if (uart_handle_sysrq_char(port,  in efm32_uart_rx_chars()
235 		if ((rxdata & port->ignore_status_mask) == 0)  in efm32_uart_rx_chars()
236 			tty_insert_flip_char(&port->state->port,  in efm32_uart_rx_chars()
246 	struct uart_port *port = &efm_port->port;  in efm32_uart_rxirq()  local
247 	struct tty_port *tport = &port->state->port;  in efm32_uart_rxirq()
249 	spin_lock(&port->lock);  in efm32_uart_rxirq()
260 		port->icount.overrun++;  in efm32_uart_rxirq()
266 	spin_unlock(&port->lock);  in efm32_uart_rxirq()
289 static int efm32_uart_startup(struct uart_port *port)  in efm32_uart_startup()  argument
291 	struct efm32_uart_port *efm_port = to_efm_port(port);  in efm32_uart_startup()
299 	port->uartclk = clk_get_rate(efm_port->clk);  in efm32_uart_startup()
307 	ret = request_irq(port->irq, efm32_uart_rxirq, 0,  in efm32_uart_startup()
321 		free_irq(port->irq, efm_port);  in efm32_uart_startup()
335 static void efm32_uart_shutdown(struct uart_port *port)  in efm32_uart_shutdown()  argument
337 	struct efm32_uart_port *efm_port = to_efm_port(port);  in efm32_uart_shutdown()
340 	free_irq(port->irq, efm_port);  in efm32_uart_shutdown()
345 static void efm32_uart_set_termios(struct uart_port *port,  in efm32_uart_set_termios()  argument
348 	struct efm32_uart_port *efm_port = to_efm_port(port);  in efm32_uart_set_termios()
357 	baud = uart_get_baud_rate(port, new, old,  in efm32_uart_set_termios()
358 			DIV_ROUND_CLOSEST(port->uartclk, 16 * 8192),  in efm32_uart_set_termios()
359 			DIV_ROUND_CLOSEST(port->uartclk, 16));  in efm32_uart_set_termios()
394 	clkdiv = (DIV_ROUND_CLOSEST(4 * port->uartclk, 16 * baud) - 4) << 6;  in efm32_uart_set_termios()
396 	spin_lock_irqsave(&port->lock, flags);  in efm32_uart_set_termios()
401 	port->read_status_mask = UARTn_RXDATAX_RXDATA__MASK;  in efm32_uart_set_termios()
403 		port->read_status_mask |=  in efm32_uart_set_termios()
406 		port->read_status_mask |= SW_UARTn_RXDATAX_BERR;  in efm32_uart_set_termios()
408 	port->ignore_status_mask = 0;  in efm32_uart_set_termios()
410 		port->ignore_status_mask |=  in efm32_uart_set_termios()
413 		port->ignore_status_mask |= SW_UARTn_RXDATAX_BERR;  in efm32_uart_set_termios()
415 	uart_update_timeout(port, new->c_cflag, baud);  in efm32_uart_set_termios()
424 	spin_unlock_irqrestore(&port->lock, flags);  in efm32_uart_set_termios()
427 static const char *efm32_uart_type(struct uart_port *port)  in efm32_uart_type()  argument
429 	return port->type == PORT_EFMUART ? "efm32-uart" : NULL;  in efm32_uart_type()
432 static void efm32_uart_release_port(struct uart_port *port)  in efm32_uart_release_port()  argument
434 	struct efm32_uart_port *efm_port = to_efm_port(port);  in efm32_uart_release_port()
438 	iounmap(port->membase);  in efm32_uart_release_port()
441 static int efm32_uart_request_port(struct uart_port *port)  in efm32_uart_request_port()  argument
443 	struct efm32_uart_port *efm_port = to_efm_port(port);  in efm32_uart_request_port()
446 	port->membase = ioremap(port->mapbase, 60);  in efm32_uart_request_port()
447 	if (!efm_port->port.membase) {  in efm32_uart_request_port()
453 	efm_port->clk = clk_get(port->dev, NULL);  in efm32_uart_request_port()
465 		iounmap(port->membase);  in efm32_uart_request_port()
472 static void efm32_uart_config_port(struct uart_port *port, int type)  in efm32_uart_config_port()  argument
475 			!efm32_uart_request_port(port))  in efm32_uart_config_port()
476 		port->type = PORT_EFMUART;  in efm32_uart_config_port()
479 static int efm32_uart_verify_port(struct uart_port *port,  in efm32_uart_verify_port()  argument
511 static void efm32_uart_console_putchar(struct uart_port *port, int ch)  in efm32_uart_console_putchar()  argument
513 	struct efm32_uart_port *efm_port = to_efm_port(port);  in efm32_uart_console_putchar()
538 	uart_console_write(&efm_port->port, s, count,  in efm32_uart_console_write()
571 	*baud = DIV_ROUND_CLOSEST(4 * efm_port->port.uartclk,  in efm32_uart_console_get_options()
618 		dev_warn(efm_port->port.dev,  in efm32_uart_console_setup()
623 	efm_port->port.uartclk = clk_get_rate(efm_port->clk);  in efm32_uart_console_setup()
631 	return uart_set_options(&efm_port->port, co, baud, parity, bits, flow);  in efm32_uart_console_setup()
694 		efm_port->port.line = ret;  in efm32_uart_probe_dt()
732 	efm_port->port.irq = ret;  in efm32_uart_probe()
736 		ret = efm_port->port.irq + 1;  in efm32_uart_probe()
740 	efm_port->port.dev = &pdev->dev;  in efm32_uart_probe()
741 	efm_port->port.mapbase = res->start;  in efm32_uart_probe()
742 	efm_port->port.type = PORT_EFMUART;  in efm32_uart_probe()
743 	efm_port->port.iotype = UPIO_MEM32;  in efm32_uart_probe()
744 	efm_port->port.fifosize = 2;  in efm32_uart_probe()
745 	efm_port->port.ops = &efm32_uart_pops;  in efm32_uart_probe()
746 	efm_port->port.flags = UPF_BOOT_AUTOCONF;  in efm32_uart_probe()
753 		efm_port->port.line = pdev->id;  in efm32_uart_probe()
760 	line = efm_port->port.line;  in efm32_uart_probe()
765 	ret = uart_add_one_port(&efm32_uart_reg, &efm_port->port);  in efm32_uart_probe()
787 	unsigned int line = efm_port->port.line;  in efm32_uart_remove()
789 	uart_remove_one_port(&efm32_uart_reg, &efm_port->port);  in efm32_uart_remove()