19bef3d41SPaul Gortmaker /* 29bef3d41SPaul Gortmaker * linux/drivers/serial/acorn.c 39bef3d41SPaul Gortmaker * 49bef3d41SPaul Gortmaker * Copyright (C) 1996-2003 Russell King. 59bef3d41SPaul Gortmaker * 69bef3d41SPaul Gortmaker * This program is free software; you can redistribute it and/or modify 79bef3d41SPaul Gortmaker * it under the terms of the GNU General Public License version 2 as 89bef3d41SPaul Gortmaker * published by the Free Software Foundation. 99bef3d41SPaul Gortmaker */ 109bef3d41SPaul Gortmaker #include <linux/module.h> 119bef3d41SPaul Gortmaker #include <linux/types.h> 129bef3d41SPaul Gortmaker #include <linux/tty.h> 139bef3d41SPaul Gortmaker #include <linux/serial_core.h> 149bef3d41SPaul Gortmaker #include <linux/errno.h> 159bef3d41SPaul Gortmaker #include <linux/ioport.h> 169bef3d41SPaul Gortmaker #include <linux/slab.h> 179bef3d41SPaul Gortmaker #include <linux/device.h> 189bef3d41SPaul Gortmaker #include <linux/init.h> 199bef3d41SPaul Gortmaker 209bef3d41SPaul Gortmaker #include <asm/io.h> 219bef3d41SPaul Gortmaker #include <asm/ecard.h> 229bef3d41SPaul Gortmaker #include <asm/string.h> 239bef3d41SPaul Gortmaker 249bef3d41SPaul Gortmaker #include "8250.h" 259bef3d41SPaul Gortmaker 269bef3d41SPaul Gortmaker #define MAX_PORTS 3 279bef3d41SPaul Gortmaker 289bef3d41SPaul Gortmaker struct serial_card_type { 299bef3d41SPaul Gortmaker unsigned int num_ports; 309bef3d41SPaul Gortmaker unsigned int uartclk; 319bef3d41SPaul Gortmaker unsigned int type; 329bef3d41SPaul Gortmaker unsigned int offset[MAX_PORTS]; 339bef3d41SPaul Gortmaker }; 349bef3d41SPaul Gortmaker 359bef3d41SPaul Gortmaker struct serial_card_info { 369bef3d41SPaul Gortmaker unsigned int num_ports; 379bef3d41SPaul Gortmaker int ports[MAX_PORTS]; 389bef3d41SPaul Gortmaker void __iomem *vaddr; 399bef3d41SPaul Gortmaker }; 409bef3d41SPaul Gortmaker 419bef3d41SPaul Gortmaker static int __devinit 429bef3d41SPaul Gortmaker serial_card_probe(struct expansion_card *ec, const struct ecard_id *id) 439bef3d41SPaul Gortmaker { 449bef3d41SPaul Gortmaker struct serial_card_info *info; 459bef3d41SPaul Gortmaker struct serial_card_type *type = id->data; 462655a2c7SAlan Cox struct uart_8250_port uart; 479bef3d41SPaul Gortmaker unsigned long bus_addr; 489bef3d41SPaul Gortmaker unsigned int i; 499bef3d41SPaul Gortmaker 509bef3d41SPaul Gortmaker info = kzalloc(sizeof(struct serial_card_info), GFP_KERNEL); 519bef3d41SPaul Gortmaker if (!info) 529bef3d41SPaul Gortmaker return -ENOMEM; 539bef3d41SPaul Gortmaker 549bef3d41SPaul Gortmaker info->num_ports = type->num_ports; 559bef3d41SPaul Gortmaker 569bef3d41SPaul Gortmaker bus_addr = ecard_resource_start(ec, type->type); 579bef3d41SPaul Gortmaker info->vaddr = ecardm_iomap(ec, type->type, 0, 0); 589bef3d41SPaul Gortmaker if (!info->vaddr) { 599bef3d41SPaul Gortmaker kfree(info); 609bef3d41SPaul Gortmaker return -ENOMEM; 619bef3d41SPaul Gortmaker } 629bef3d41SPaul Gortmaker 639bef3d41SPaul Gortmaker ecard_set_drvdata(ec, info); 649bef3d41SPaul Gortmaker 652655a2c7SAlan Cox memset(&uart, 0, sizeof(struct uart_8250_port)); 662655a2c7SAlan Cox uart.port.irq = ec->irq; 672655a2c7SAlan Cox uart.port.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ; 682655a2c7SAlan Cox uart.port.uartclk = type->uartclk; 692655a2c7SAlan Cox uart.port.iotype = UPIO_MEM; 702655a2c7SAlan Cox uart.port.regshift = 2; 712655a2c7SAlan Cox uart.port.dev = &ec->dev; 729bef3d41SPaul Gortmaker 739bef3d41SPaul Gortmaker for (i = 0; i < info->num_ports; i ++) { 742655a2c7SAlan Cox uart.port.membase = info->vaddr + type->offset[i]; 752655a2c7SAlan Cox uart.port.mapbase = bus_addr + type->offset[i]; 769bef3d41SPaul Gortmaker 772655a2c7SAlan Cox info->ports[i] = serial8250_register_8250_port(&uart); 789bef3d41SPaul Gortmaker } 799bef3d41SPaul Gortmaker 809bef3d41SPaul Gortmaker return 0; 819bef3d41SPaul Gortmaker } 829bef3d41SPaul Gortmaker 839bef3d41SPaul Gortmaker static void __devexit serial_card_remove(struct expansion_card *ec) 849bef3d41SPaul Gortmaker { 859bef3d41SPaul Gortmaker struct serial_card_info *info = ecard_get_drvdata(ec); 869bef3d41SPaul Gortmaker int i; 879bef3d41SPaul Gortmaker 889bef3d41SPaul Gortmaker ecard_set_drvdata(ec, NULL); 899bef3d41SPaul Gortmaker 909bef3d41SPaul Gortmaker for (i = 0; i < info->num_ports; i++) 919bef3d41SPaul Gortmaker if (info->ports[i] > 0) 929bef3d41SPaul Gortmaker serial8250_unregister_port(info->ports[i]); 939bef3d41SPaul Gortmaker 949bef3d41SPaul Gortmaker kfree(info); 959bef3d41SPaul Gortmaker } 969bef3d41SPaul Gortmaker 979bef3d41SPaul Gortmaker static struct serial_card_type atomwide_type = { 989bef3d41SPaul Gortmaker .num_ports = 3, 999bef3d41SPaul Gortmaker .uartclk = 7372800, 1009bef3d41SPaul Gortmaker .type = ECARD_RES_IOCSLOW, 1019bef3d41SPaul Gortmaker .offset = { 0x2800, 0x2400, 0x2000 }, 1029bef3d41SPaul Gortmaker }; 1039bef3d41SPaul Gortmaker 1049bef3d41SPaul Gortmaker static struct serial_card_type serport_type = { 1059bef3d41SPaul Gortmaker .num_ports = 2, 1069bef3d41SPaul Gortmaker .uartclk = 3686400, 1079bef3d41SPaul Gortmaker .type = ECARD_RES_IOCSLOW, 1089bef3d41SPaul Gortmaker .offset = { 0x2000, 0x2020 }, 1099bef3d41SPaul Gortmaker }; 1109bef3d41SPaul Gortmaker 1119bef3d41SPaul Gortmaker static const struct ecard_id serial_cids[] = { 1129bef3d41SPaul Gortmaker { MANU_ATOMWIDE, PROD_ATOMWIDE_3PSERIAL, &atomwide_type }, 1139bef3d41SPaul Gortmaker { MANU_SERPORT, PROD_SERPORT_DSPORT, &serport_type }, 1149bef3d41SPaul Gortmaker { 0xffff, 0xffff } 1159bef3d41SPaul Gortmaker }; 1169bef3d41SPaul Gortmaker 1179bef3d41SPaul Gortmaker static struct ecard_driver serial_card_driver = { 1189bef3d41SPaul Gortmaker .probe = serial_card_probe, 1192d47b716SBill Pemberton .remove = serial_card_remove, 1209bef3d41SPaul Gortmaker .id_table = serial_cids, 1219bef3d41SPaul Gortmaker .drv = { 1229bef3d41SPaul Gortmaker .name = "8250_acorn", 1239bef3d41SPaul Gortmaker }, 1249bef3d41SPaul Gortmaker }; 1259bef3d41SPaul Gortmaker 1269bef3d41SPaul Gortmaker static int __init serial_card_init(void) 1279bef3d41SPaul Gortmaker { 1289bef3d41SPaul Gortmaker return ecard_register_driver(&serial_card_driver); 1299bef3d41SPaul Gortmaker } 1309bef3d41SPaul Gortmaker 1319bef3d41SPaul Gortmaker static void __exit serial_card_exit(void) 1329bef3d41SPaul Gortmaker { 1339bef3d41SPaul Gortmaker ecard_remove_driver(&serial_card_driver); 1349bef3d41SPaul Gortmaker } 1359bef3d41SPaul Gortmaker 1369bef3d41SPaul Gortmaker MODULE_AUTHOR("Russell King"); 1379bef3d41SPaul Gortmaker MODULE_DESCRIPTION("Acorn 8250-compatible serial port expansion card driver"); 1389bef3d41SPaul Gortmaker MODULE_LICENSE("GPL"); 1399bef3d41SPaul Gortmaker 1409bef3d41SPaul Gortmaker module_init(serial_card_init); 1419bef3d41SPaul Gortmaker module_exit(serial_card_exit); 142