| /* |
| * Legacy COM port devices for x86 platforms without PNPBIOS or ACPI. |
| * Data taken from include/asm-i386/serial.h. |
| * |
| * (c) Copyright 2007 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. |
| */ |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/pnp.h> |
| #include <linux/serial_8250.h> |
| |
| /* Standard COM flags (except for COM4, because of the 8514 problem) */ |
| #ifdef CONFIG_SERIAL_DETECT_IRQ |
| #define COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ) |
| #define COM4_FLAGS (UPF_BOOT_AUTOCONF | UPF_AUTO_IRQ) |
| #else |
| #define COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST) |
| #define COM4_FLAGS UPF_BOOT_AUTOCONF |
| #endif |
| |
| #define PORT(_base,_irq,_flags) \ |
| { \ |
| .iobase = _base, \ |
| .irq = _irq, \ |
| .uartclk = 1843200, \ |
| .iotype = UPIO_PORT, \ |
| .flags = _flags, \ |
| } |
| |
| static struct plat_serial8250_port x86_com_data[] = { |
| PORT(0x3F8, 4, COM_FLAGS), |
| PORT(0x2F8, 3, COM_FLAGS), |
| PORT(0x3E8, 4, COM_FLAGS), |
| PORT(0x2E8, 3, COM4_FLAGS), |
| { }, |
| }; |
| |
| static struct platform_device x86_com_device = { |
| .name = "serial8250", |
| .id = PLAT8250_DEV_PLATFORM, |
| .dev = { |
| .platform_data = x86_com_data, |
| }, |
| }; |
| |
| static int force_legacy_probe; |
| module_param_named(force, force_legacy_probe, bool, 0); |
| MODULE_PARM_DESC(force, "Force legacy serial port probe"); |
| |
| static int __init serial8250_x86_com_init(void) |
| { |
| if (pnp_platform_devices && !force_legacy_probe) |
| return -ENODEV; |
| |
| return platform_device_register(&x86_com_device); |
| } |
| |
| module_init(serial8250_x86_com_init); |
| |
| MODULE_AUTHOR("Bjorn Helgaas"); |
| MODULE_LICENSE("GPL"); |
| MODULE_DESCRIPTION("Generic 8250/16x50 legacy probe module"); |
