38 unsigned int __weak __init serial8250_early_in(struct uart_port *port, int offset)  in serial8250_early_in()  argument
40 	switch (port->iotype) {  in serial8250_early_in()
42 		return readb(port->membase + offset);  in serial8250_early_in()
44 		return readl(port->membase + (offset << 2));  in serial8250_early_in()
46 		return ioread32be(port->membase + (offset << 2));  in serial8250_early_in()
48 		return inb(port->iobase + offset);  in serial8250_early_in()
54 void __weak __init serial8250_early_out(struct uart_port *port, int offset, int value)  in serial8250_early_out()  argument
56 	switch (port->iotype) {  in serial8250_early_out()
58 		writeb(value, port->membase + offset);  in serial8250_early_out()
61 		writel(value, port->membase + (offset << 2));  in serial8250_early_out()
64 		iowrite32be(value, port->membase + (offset << 2));  in serial8250_early_out()
67 		outb(value, port->iobase + offset);  in serial8250_early_out()
74 static void __init wait_for_xmitr(struct uart_port *port)  in wait_for_xmitr()  argument
79 		status = serial8250_early_in(port, UART_LSR);  in wait_for_xmitr()
86 static void __init serial_putc(struct uart_port *port, int c)  in serial_putc()  argument
88 	wait_for_xmitr(port);  in serial_putc()
89 	serial8250_early_out(port, UART_TX, c);  in serial_putc()
96 	struct uart_port *port = &device->port;  in early_serial8250_write()  local
100 	ier = serial8250_early_in(port, UART_IER);  in early_serial8250_write()
102 		serial8250_early_out(port, UART_IER, ier & UART_IER_UUE);  in early_serial8250_write()
104 	uart_console_write(port, s, count, serial_putc);  in early_serial8250_write()
107 	wait_for_xmitr(port);  in early_serial8250_write()
110 		serial8250_early_out(port, UART_IER, ier);  in early_serial8250_write()
115 	struct uart_port *port = &device->port;  in init_port()  local
120 	serial8250_early_out(port, UART_LCR, 0x3);	/* 8n1 */  in init_port()
121 	ier = serial8250_early_in(port, UART_IER);  in init_port()
122 	serial8250_early_out(port, UART_IER, ier & UART_IER_UUE); /* no interrupt */  in init_port()
123 	serial8250_early_out(port, UART_FCR, 0);	/* no fifo */  in init_port()
124 	serial8250_early_out(port, UART_MCR, 0x3);	/* DTR + RTS */  in init_port()
126 	divisor = DIV_ROUND_CLOSEST(port->uartclk, 16 * device->baud);  in init_port()
127 	c = serial8250_early_in(port, UART_LCR);  in init_port()
128 	serial8250_early_out(port, UART_LCR, c | UART_LCR_DLAB);  in init_port()
129 	serial8250_early_out(port, UART_DLL, divisor & 0xff);  in init_port()
130 	serial8250_early_out(port, UART_DLM, (divisor >> 8) & 0xff);  in init_port()
131 	serial8250_early_out(port, UART_LCR, c & ~UART_LCR_DLAB);  in init_port()
137 	if (!(device->port.membase || device->port.iobase))  in early_serial8250_setup()
141 		struct uart_port *port = &device->port;  in early_serial8250_setup()  local
145 		ier = serial8250_early_in(port, UART_IER);  in early_serial8250_setup()
146 		serial8250_early_out(port, UART_IER, ier & UART_IER_UUE);  in early_serial8250_setup()