diff options
Diffstat (limited to 'drivers/serial/8250_acpi.c')
| -rw-r--r-- | drivers/serial/8250_acpi.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/drivers/serial/8250_acpi.c b/drivers/serial/8250_acpi.c deleted file mode 100644 index 809f89ab965c..000000000000 --- a/drivers/serial/8250_acpi.c +++ /dev/null @@ -1,183 +0,0 @@ -/* - * Copyright (c) 2002-2003 Matthew Wilcox for Hewlett-Packard - * Copyright (C) 2004 Hewlett-Packard Co - * 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 as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - */ - -#include <linux/acpi.h> -#include <linux/init.h> -#include <linux/module.h> -#include <linux/serial_core.h> - -#include <acpi/acpi_bus.h> - -#include <asm/io.h> - -#include "8250.h" - -struct serial_private { - int line; -}; - -static acpi_status acpi_serial_mmio(struct uart_port *port, - struct acpi_resource_address64 *addr) -{ - port->mapbase = addr->minimum; - port->iotype = UPIO_MEM; - port->flags |= UPF_IOREMAP; - return AE_OK; -} - -static acpi_status acpi_serial_port(struct uart_port *port, - struct acpi_resource_io *io) -{ - if (io->address_length) { - port->iobase = io->minimum; - port->iotype = UPIO_PORT; - } else - printk(KERN_ERR "%s: zero-length IO port range?\n", __FUNCTION__); - return AE_OK; -} - -static acpi_status acpi_serial_ext_irq(struct uart_port *port, - struct acpi_resource_extended_irq *ext_irq) -{ - int rc; - - if (ext_irq->interrupt_count > 0) { - rc = acpi_register_gsi(ext_irq->interrupts[0], - ext_irq->triggering, ext_irq->polarity); - if (rc < 0) - return AE_ERROR; - port->irq = rc; - } - return AE_OK; -} - -static acpi_status acpi_serial_irq(struct uart_port *port, - struct acpi_resource_irq *irq) -{ - int rc; - - if (irq->interrupt_count > 0) { - rc = acpi_register_gsi(irq->interrupts[0], - irq->triggering, irq->polarity); - if (rc < 0) - return AE_ERROR; - port->irq = rc; - } - return AE_OK; -} - -static acpi_status acpi_serial_resource(struct acpi_resource *res, void *data) -{ - struct uart_port *port = (struct uart_port *) data; - struct acpi_resource_address64 addr; - acpi_status status; - - status = acpi_resource_to_address64(res, &addr); - if (ACPI_SUCCESS(status)) - return acpi_serial_mmio(port, &addr); - else if (res->type == ACPI_RESOURCE_TYPE_IO) - return acpi_serial_port(port, &res->data.io); - else if (res->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) - return acpi_serial_ext_irq(port, &res->data.extended_irq); - else if (res->type == ACPI_RESOURCE_TYPE_IRQ) - return acpi_serial_irq(port, &res->data.irq); - return AE_OK; -} - -static int acpi_serial_add(struct acpi_device *device) -{ - struct serial_private *priv; - acpi_status status; - struct uart_port port; - int result; - - memset(&port, 0, sizeof(struct uart_port)); - - port.uartclk = 1843200; - port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF; - - priv = kmalloc(sizeof(struct serial_private), GFP_KERNEL); - if (!priv) { - result = -ENOMEM; - goto fail; - } - memset(priv, 0, sizeof(*priv)); - - status = acpi_walk_resources(device->handle, METHOD_NAME__CRS, - acpi_serial_resource, &port); - if (ACPI_FAILURE(status)) { - result = -ENODEV; - goto fail; - } - - if (!port.mapbase && !port.iobase) { - printk(KERN_ERR "%s: no iomem or port address in %s _CRS\n", - __FUNCTION__, device->pnp.bus_id); - result = -ENODEV; - goto fail; - } - - priv->line = serial8250_register_port(&port); - if (priv->line < 0) { - printk(KERN_WARNING "Couldn't register serial port %s: %d\n", - device->pnp.bus_id, priv->line); - result = -ENODEV; - goto fail; - } - - acpi_driver_data(device) = priv; - return 0; - -fail: - kfree(priv); - - return result; -} - -static int acpi_serial_remove(struct acpi_device *device, int type) -{ - struct serial_private *priv; - - if (!device || !acpi_driver_data(device)) - return -EINVAL; - - priv = acpi_driver_data(device); - serial8250_unregister_port(priv->line); - kfree(priv); - - return 0; -} - -static struct acpi_driver acpi_serial_driver = { - .name = "serial", - .class = "", - .ids = "PNP0501", - .ops = { - .add = acpi_serial_add, - .remove = acpi_serial_remove, - }, -}; - -static int __init acpi_serial_init(void) -{ - return acpi_bus_register_driver(&acpi_serial_driver); -} - -static void __exit acpi_serial_exit(void) -{ - acpi_bus_unregister_driver(&acpi_serial_driver); -} - -module_init(acpi_serial_init); -module_exit(acpi_serial_exit); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("Generic 8250/16x50 ACPI serial driver"); |
