/* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2007 Ralf Baechle (ralf@linux-mips.org) * * Copyright (C) 2009 Lemote, Inc. * Author: Yan hua (yanhua@lemote.com) * Author: Wu Zhangjin (wuzhangjin@gmail.com) */ #include <linux/io.h> #include <linux/module.h> #include <linux/serial_8250.h> #include <asm/bootinfo.h> #include <loongson.h> #include <machine.h> #define PORT(int, clk) \ { \ .irq = int, \ .uartclk = clk, \ .iotype = UPIO_PORT, \ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \ .regshift = 0, \ } #define PORT_M(int, clk) \ { \ .irq = MIPS_CPU_IRQ_BASE + (int), \ .uartclk = clk, \ .iotype = UPIO_MEM, \ .membase = (void __iomem *)NULL, \ .flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST, \ .regshift = 0, \ } static struct plat_serial8250_port uart8250_data[MACH_LOONGSON_END + 1] = { [MACH_LOONGSON_UNKNOWN] = {}, [MACH_LEMOTE_FL2E] = PORT(4, 1843200), [MACH_LEMOTE_FL2F] = PORT(3, 1843200), [MACH_LEMOTE_ML2F7] = PORT_M(3, 3686400), [MACH_LEMOTE_YL2F89] = PORT_M(3, 3686400), [MACH_DEXXON_GDIUM2F10] = PORT_M(3, 3686400), [MACH_LEMOTE_NAS] = PORT_M(3, 3686400), [MACH_LEMOTE_LL2F] = PORT(3, 1843200), [MACH_LOONGSON_END] = {}, }; static struct platform_device uart8250_device = { .name = "serial8250", .id = PLAT8250_DEV_PLATFORM, }; static int __init serial_init(void) { unsigned char iotype; iotype = uart8250_data[mips_machtype].iotype; if (UPIO_MEM == iotype) { uart8250_data[mips_machtype].mapbase = loongson_uart_base; uart8250_data[mips_machtype].membase = (void __iomem *)_loongson_uart_base; } else if (UPIO_PORT == iotype) uart8250_data[mips_machtype].iobase = loongson_uart_base - LOONGSON_PCIIO_BASE; memset(&uart8250_data[mips_machtype + 1], 0, sizeof(struct plat_serial8250_port)); uart8250_device.dev.platform_data = &uart8250_data[mips_machtype]; return platform_device_register(&uart8250_device); } module_init(serial_init); static void __exit serial_exit(void) { platform_device_unregister(&uart8250_device); } module_exit(serial_exit);