tty: move drivers/serial/ to drivers/tty/serial/

The serial drivers are really just tty drivers, so move them to
drivers/tty/ to make things a bit neater overall.

This is part of the tty/serial driver movement proceedure as proposed by
Arnd Bergmann and approved by everyone involved a number of months ago.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Rogier Wolff <R.E.Wolff@bitwizard.nl>
Cc: Michael H. Warfield <mhw@wittsend.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 287 deletions

diff --git a/drivers/serial/8250_early.c b/drivers/serial/8250_early.c
deleted file mode 100644
index eaafb98..0000000
--- a/drivers/serial/8250_early.c
+++ /dev/null
@@ -1,287 +0,0 @@
-/*
- * Early serial console for 8250/16550 devices
- *
- * (c) Copyright 2004 Hewlett-Packard Development Company, L.P.
- *	Bjorn Helgaas <bjorn.helgaas@hp.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Based on the 8250.c serial driver, Copyright (C) 2001 Russell King,
- * and on early_printk.c by Andi Kleen.
- *
- * This is for use before the serial driver has initialized, in
- * particular, before the UARTs have been discovered and named.
- * Instead of specifying the console device as, e.g., "ttyS0",
- * we locate the device directly by its MMIO or I/O port address.
- *
- * The user can specify the device directly, e.g.,
- *	earlycon=uart8250,io,0x3f8,9600n8
- *	earlycon=uart8250,mmio,0xff5e0000,115200n8
- *	earlycon=uart8250,mmio32,0xff5e0000,115200n8
- * or
- *	console=uart8250,io,0x3f8,9600n8
- *	console=uart8250,mmio,0xff5e0000,115200n8
- *	console=uart8250,mmio32,0xff5e0000,115200n8
- */
-
-#include <linux/tty.h>
-#include <linux/init.h>
-#include <linux/console.h>
-#include <linux/serial_core.h>
-#include <linux/serial_reg.h>
-#include <linux/serial.h>
-#include <linux/serial_8250.h>
-#include <asm/io.h>
-#include <asm/serial.h>
-#ifdef CONFIG_FIX_EARLYCON_MEM
-#include <asm/pgtable.h>
-#include <asm/fixmap.h>
-#endif
-
-struct early_serial8250_device {
-	struct uart_port port;
-	char options[16];		/* e.g., 115200n8 */
-	unsigned int baud;
-};
-
-static struct early_serial8250_device early_device;
-
-static unsigned int __init serial_in(struct uart_port *port, int offset)
-{
-	switch (port->iotype) {
-	case UPIO_MEM:
-		return readb(port->membase + offset);
-	case UPIO_MEM32:
-		return readl(port->membase + (offset << 2));
-	case UPIO_PORT:
-		return inb(port->iobase + offset);
-	default:
-		return 0;
-	}
-}
-
-static void __init serial_out(struct uart_port *port, int offset, int value)
-{
-	switch (port->iotype) {
-	case UPIO_MEM:
-		writeb(value, port->membase + offset);
-		break;
-	case UPIO_MEM32:
-		writel(value, port->membase + (offset << 2));
-		break;
-	case UPIO_PORT:
-		outb(value, port->iobase + offset);
-		break;
-	}
-}
-
-#define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
-
-static void __init wait_for_xmitr(struct uart_port *port)
-{
-	unsigned int status;
-
-	for (;;) {
-		status = serial_in(port, UART_LSR);
-		if ((status & BOTH_EMPTY) == BOTH_EMPTY)
-			return;
-		cpu_relax();
-	}
-}
-
-static void __init serial_putc(struct uart_port *port, int c)
-{
-	wait_for_xmitr(port);
-	serial_out(port, UART_TX, c);
-}
-
-static void __init early_serial8250_write(struct console *console,
-					const char *s, unsigned int count)
-{
-	struct uart_port *port = &early_device.port;
-	unsigned int ier;
-
-	/* Save the IER and disable interrupts */
-	ier = serial_in(port, UART_IER);
-	serial_out(port, UART_IER, 0);
-
-	uart_console_write(port, s, count, serial_putc);
-
-	/* Wait for transmitter to become empty and restore the IER */
-	wait_for_xmitr(port);
-	serial_out(port, UART_IER, ier);
-}
-
-static unsigned int __init probe_baud(struct uart_port *port)
-{
-	unsigned char lcr, dll, dlm;
-	unsigned int quot;
-
-	lcr = serial_in(port, UART_LCR);
-	serial_out(port, UART_LCR, lcr | UART_LCR_DLAB);
-	dll = serial_in(port, UART_DLL);
-	dlm = serial_in(port, UART_DLM);
-	serial_out(port, UART_LCR, lcr);
-
-	quot = (dlm << 8) | dll;
-	return (port->uartclk / 16) / quot;
-}
-
-static void __init init_port(struct early_serial8250_device *device)
-{
-	struct uart_port *port = &device->port;
-	unsigned int divisor;
-	unsigned char c;
-
-	serial_out(port, UART_LCR, 0x3);	/* 8n1 */
-	serial_out(port, UART_IER, 0);		/* no interrupt */
-	serial_out(port, UART_FCR, 0);		/* no fifo */
-	serial_out(port, UART_MCR, 0x3);	/* DTR + RTS */
-
-	divisor = port->uartclk / (16 * device->baud);
-	c = serial_in(port, UART_LCR);
-	serial_out(port, UART_LCR, c | UART_LCR_DLAB);
-	serial_out(port, UART_DLL, divisor & 0xff);
-	serial_out(port, UART_DLM, (divisor >> 8) & 0xff);
-	serial_out(port, UART_LCR, c & ~UART_LCR_DLAB);
-}
-
-static int __init parse_options(struct early_serial8250_device *device,
-								char *options)
-{
-	struct uart_port *port = &device->port;
-	int mmio, mmio32, length;
-
-	if (!options)
-		return -ENODEV;
-
-	port->uartclk = BASE_BAUD * 16;
-
-	mmio = !strncmp(options, "mmio,", 5);
-	mmio32 = !strncmp(options, "mmio32,", 7);
-	if (mmio || mmio32) {
-		port->iotype = (mmio ? UPIO_MEM : UPIO_MEM32);
-		port->mapbase = simple_strtoul(options + (mmio ? 5 : 7),
-					       &options, 0);
-		if (mmio32)
-			port->regshift = 2;
-#ifdef CONFIG_FIX_EARLYCON_MEM
-		set_fixmap_nocache(FIX_EARLYCON_MEM_BASE,
-					port->mapbase & PAGE_MASK);
-		port->membase =
-			(void __iomem *)__fix_to_virt(FIX_EARLYCON_MEM_BASE);
-		port->membase += port->mapbase & ~PAGE_MASK;
-#else
-		port->membase = ioremap_nocache(port->mapbase, 64);
-		if (!port->membase) {
-			printk(KERN_ERR "%s: Couldn't ioremap 0x%llx\n",
-				__func__,
-			       (unsigned long long) port->mapbase);
-			return -ENOMEM;
-		}
-#endif
-	} else if (!strncmp(options, "io,", 3)) {
-		port->iotype = UPIO_PORT;
-		port->iobase = simple_strtoul(options + 3, &options, 0);
-		mmio = 0;
-	} else
-		return -EINVAL;
-
-	options = strchr(options, ',');
-	if (options) {
-		options++;
-		device->baud = simple_strtoul(options, NULL, 0);
-		length = min(strcspn(options, " "), sizeof(device->options));
-		strncpy(device->options, options, length);
-	} else {
-		device->baud = probe_baud(port);
-		snprintf(device->options, sizeof(device->options), "%u",
-			device->baud);
-	}
-
-	if (mmio || mmio32)
-		printk(KERN_INFO
-		       "Early serial console at MMIO%s 0x%llx (options '%s')\n",
-			mmio32 ? "32" : "",
-			(unsigned long long)port->mapbase,
-			device->options);
-	else
-		printk(KERN_INFO
-		      "Early serial console at I/O port 0x%lx (options '%s')\n",
-			port->iobase,
-			device->options);
-
-	return 0;
-}
-
-static struct console early_serial8250_console __initdata = {
-	.name	= "uart",
-	.write	= early_serial8250_write,
-	.flags	= CON_PRINTBUFFER | CON_BOOT,
-	.index	= -1,
-};
-
-static int __init early_serial8250_setup(char *options)
-{
-	struct early_serial8250_device *device = &early_device;
-	int err;
-
-	if (device->port.membase || device->port.iobase)
-		return 0;
-
-	err = parse_options(device, options);
-	if (err < 0)
-		return err;
-
-	init_port(device);
-	return 0;
-}
-
-int __init setup_early_serial8250_console(char *cmdline)
-{
-	char *options;
-	int err;
-
-	options = strstr(cmdline, "uart8250,");
-	if (!options) {
-		options = strstr(cmdline, "uart,");
-		if (!options)
-			return 0;
-	}
-
-	options = strchr(cmdline, ',') + 1;
-	err = early_serial8250_setup(options);
-	if (err < 0)
-		return err;
-
-	register_console(&early_serial8250_console);
-
-	return 0;
-}
-
-int serial8250_find_port_for_earlycon(void)
-{
-	struct early_serial8250_device *device = &early_device;
-	struct uart_port *port = &device->port;
-	int line;
-	int ret;
-
-	if (!device->port.membase && !device->port.iobase)
-		return -ENODEV;
-
-	line = serial8250_find_port(port);
-	if (line < 0)
-		return -ENODEV;
-
-	ret = update_console_cmdline("uart", 8250,
-			     "ttyS", line, device->options);
-	if (ret < 0)
-		ret = update_console_cmdline("uart", 0,
-				     "ttyS", line, device->options);
-
-	return ret;
-}
-
-early_param("earlycon", setup_early_serial8250_console);