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authorGreg Kroah-Hartman <gregkh@suse.de>2011-01-13 21:10:18 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2011-01-13 21:10:18 +0100
commitab4382d27412e7e3e7c936e8d50d8888dfac3df8 (patch)
tree51d96dea2431140358784b6b426715f37f74fd53 /drivers/serial/of_serial.c
parenttty: move hvc drivers to drivers/tty/hvc/ (diff)
downloadlinux-ab4382d27412e7e3e7c936e8d50d8888dfac3df8.tar.xz
linux-ab4382d27412e7e3e7c936e8d50d8888dfac3df8.zip
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>
Diffstat (limited to 'drivers/serial/of_serial.c')
-rw-r--r--drivers/serial/of_serial.c201
1 files changed, 0 insertions, 201 deletions
diff --git a/drivers/serial/of_serial.c b/drivers/serial/of_serial.c
deleted file mode 100644
index 5c7abe4c94dd..000000000000
--- a/drivers/serial/of_serial.c
+++ /dev/null
@@ -1,201 +0,0 @@
-/*
- * Serial Port driver for Open Firmware platform devices
- *
- * Copyright (C) 2006 Arnd Bergmann <arnd@arndb.de>, IBM Corp.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/serial_core.h>
-#include <linux/serial_8250.h>
-#include <linux/of_address.h>
-#include <linux/of_irq.h>
-#include <linux/of_platform.h>
-#include <linux/nwpserial.h>
-
-struct of_serial_info {
- int type;
- int line;
-};
-
-/*
- * Fill a struct uart_port for a given device node
- */
-static int __devinit of_platform_serial_setup(struct platform_device *ofdev,
- int type, struct uart_port *port)
-{
- struct resource resource;
- struct device_node *np = ofdev->dev.of_node;
- const __be32 *clk, *spd;
- const __be32 *prop;
- int ret, prop_size;
-
- memset(port, 0, sizeof *port);
- spd = of_get_property(np, "current-speed", NULL);
- clk = of_get_property(np, "clock-frequency", NULL);
- if (!clk) {
- dev_warn(&ofdev->dev, "no clock-frequency property set\n");
- return -ENODEV;
- }
-
- ret = of_address_to_resource(np, 0, &resource);
- if (ret) {
- dev_warn(&ofdev->dev, "invalid address\n");
- return ret;
- }
-
- spin_lock_init(&port->lock);
- port->mapbase = resource.start;
-
- /* Check for shifted address mapping */
- prop = of_get_property(np, "reg-offset", &prop_size);
- if (prop && (prop_size == sizeof(u32)))
- port->mapbase += be32_to_cpup(prop);
-
- /* Check for registers offset within the devices address range */
- prop = of_get_property(np, "reg-shift", &prop_size);
- if (prop && (prop_size == sizeof(u32)))
- port->regshift = be32_to_cpup(prop);
-
- port->irq = irq_of_parse_and_map(np, 0);
- port->iotype = UPIO_MEM;
- port->type = type;
- port->uartclk = be32_to_cpup(clk);
- port->flags = UPF_SHARE_IRQ | UPF_BOOT_AUTOCONF | UPF_IOREMAP
- | UPF_FIXED_PORT | UPF_FIXED_TYPE;
- port->dev = &ofdev->dev;
- /* If current-speed was set, then try not to change it. */
- if (spd)
- port->custom_divisor = be32_to_cpup(clk) / (16 * (be32_to_cpup(spd)));
-
- return 0;
-}
-
-/*
- * Try to register a serial port
- */
-static int __devinit of_platform_serial_probe(struct platform_device *ofdev,
- const struct of_device_id *id)
-{
- struct of_serial_info *info;
- struct uart_port port;
- int port_type;
- int ret;
-
- if (of_find_property(ofdev->dev.of_node, "used-by-rtas", NULL))
- return -EBUSY;
-
- info = kmalloc(sizeof(*info), GFP_KERNEL);
- if (info == NULL)
- return -ENOMEM;
-
- port_type = (unsigned long)id->data;
- ret = of_platform_serial_setup(ofdev, port_type, &port);
- if (ret)
- goto out;
-
- switch (port_type) {
-#ifdef CONFIG_SERIAL_8250
- case PORT_8250 ... PORT_MAX_8250:
- ret = serial8250_register_port(&port);
- break;
-#endif
-#ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL
- case PORT_NWPSERIAL:
- ret = nwpserial_register_port(&port);
- break;
-#endif
- default:
- /* need to add code for these */
- case PORT_UNKNOWN:
- dev_info(&ofdev->dev, "Unknown serial port found, ignored\n");
- ret = -ENODEV;
- break;
- }
- if (ret < 0)
- goto out;
-
- info->type = port_type;
- info->line = ret;
- dev_set_drvdata(&ofdev->dev, info);
- return 0;
-out:
- kfree(info);
- irq_dispose_mapping(port.irq);
- return ret;
-}
-
-/*
- * Release a line
- */
-static int of_platform_serial_remove(struct platform_device *ofdev)
-{
- struct of_serial_info *info = dev_get_drvdata(&ofdev->dev);
- switch (info->type) {
-#ifdef CONFIG_SERIAL_8250
- case PORT_8250 ... PORT_MAX_8250:
- serial8250_unregister_port(info->line);
- break;
-#endif
-#ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL
- case PORT_NWPSERIAL:
- nwpserial_unregister_port(info->line);
- break;
-#endif
- default:
- /* need to add code for these */
- break;
- }
- kfree(info);
- return 0;
-}
-
-/*
- * A few common types, add more as needed.
- */
-static struct of_device_id __devinitdata of_platform_serial_table[] = {
- { .type = "serial", .compatible = "ns8250", .data = (void *)PORT_8250, },
- { .type = "serial", .compatible = "ns16450", .data = (void *)PORT_16450, },
- { .type = "serial", .compatible = "ns16550a", .data = (void *)PORT_16550A, },
- { .type = "serial", .compatible = "ns16550", .data = (void *)PORT_16550, },
- { .type = "serial", .compatible = "ns16750", .data = (void *)PORT_16750, },
- { .type = "serial", .compatible = "ns16850", .data = (void *)PORT_16850, },
-#ifdef CONFIG_SERIAL_OF_PLATFORM_NWPSERIAL
- { .type = "serial", .compatible = "ibm,qpace-nwp-serial",
- .data = (void *)PORT_NWPSERIAL, },
-#endif
- { .type = "serial", .data = (void *)PORT_UNKNOWN, },
- { /* end of list */ },
-};
-
-static struct of_platform_driver of_platform_serial_driver = {
- .driver = {
- .name = "of_serial",
- .owner = THIS_MODULE,
- .of_match_table = of_platform_serial_table,
- },
- .probe = of_platform_serial_probe,
- .remove = of_platform_serial_remove,
-};
-
-static int __init of_platform_serial_init(void)
-{
- return of_register_platform_driver(&of_platform_serial_driver);
-}
-module_init(of_platform_serial_init);
-
-static void __exit of_platform_serial_exit(void)
-{
- return of_unregister_platform_driver(&of_platform_serial_driver);
-};
-module_exit(of_platform_serial_exit);
-
-MODULE_AUTHOR("Arnd Bergmann <arnd@arndb.de>");
-MODULE_LICENSE("GPL");
-MODULE_DESCRIPTION("Serial Port driver for Open Firmware platform devices");