/* * linux/drivers/serial/acorn.c * * Copyright (C) 1996-2003 Russell King. * * 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/types.h> #include <linux/tty.h> #include <linux/serial_core.h> #include <linux/errno.h> #include <linux/ioport.h> #include <linux/slab.h> #include <linux/device.h> #include <linux/init.h> #include <asm/io.h> #include <asm/ecard.h> #include <asm/string.h> #include "8250.h" #define MAX_PORTS 3 struct serial_card_type { unsigned int num_ports; unsigned int uartclk; unsigned int type; unsigned int offset[MAX_PORTS]; }; struct serial_card_info { unsigned int num_ports; int ports[MAX_PORTS]; }; static int __devinit serial_card_probe(struct expansion_card *ec, const struct ecard_id *id) { struct serial_card_info *info; struct serial_card_type *type = id->data; struct uart_port port; unsigned long bus_addr; unsigned char __iomem *virt_addr; unsigned int i; info = kmalloc(sizeof(struct serial_card_info), GFP_KERNEL); if (!info) return -ENOMEM; memset(info, 0, sizeof(struct serial_card_info)); info->num_ports = type->num_ports; bus_addr = ecard_resource_start(ec, type->type); virt_addr = ioremap(bus_addr, ecard_resource_len(ec, type->type)); if (!virt_addr) { kfree(info); return -ENOMEM; } ecard_set_drvdata(ec, info); memset(&port, 0, sizeof(struct uart_port)); port.irq = ec->irq; port.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ; port.uartclk = type->uartclk; port.iotype = UPIO_MEM; port.regshift = 2; port.dev = &ec->dev; for (i = 0; i < info->num_ports; i ++) { port.membase = virt_addr + type->offset[i]; port.mapbase = bus_addr + type->offset[i]; info->ports[i] = serial8250_register_port(&port); } return 0; } static void __devexit serial_card_remove(struct expansion_card *ec) { struct serial_card_info *info = ecard_get_drvdata(ec); int i; ecard_set_drvdata(ec, NULL); for (i = 0; i < info->num_ports; i++) if (info->ports[i] > 0) serial8250_unregister_port(info->ports[i]); kfree(info); } static struct serial_card_type atomwide_type = { .num_ports = 3, .uartclk = 7372800, .type = ECARD_RES_IOCSLOW, .offset = { 0x2800, 0x2400, 0x2000 }, }; static struct serial_card_type serport_type = { .num_ports = 2, .uartclk = 3686400, .type = ECARD_RES_IOCSLOW, .offset = { 0x2000, 0x2020 }, }; static const struct ecard_id serial_cids[] = { { MANU_ATOMWIDE, PROD_ATOMWIDE_3PSERIAL, &atomwide_type }, { MANU_SERPORT, PROD_SERPORT_DSPORT, &serport_type }, { 0xffff, 0xffff } }; static struct ecard_driver serial_card_driver = { .probe = serial_card_probe, .remove = __devexit_p(serial_card_remove), .id_table = serial_cids, .drv = { .name = "8250_acorn", }, }; static int __init serial_card_init(void) { return ecard_register_driver(&serial_card_driver); } static void __exit serial_card_exit(void) { ecard_remove_driver(&serial_card_driver); } MODULE_AUTHOR("Russell King"); MODULE_DESCRIPTION("Acorn 8250-compatible serial port expansion card driver"); MODULE_LICENSE("GPL"); module_init(serial_card_init); module_exit(serial_card_exit);