1/* 2 * linux/drivers/serial/acorn.c 3 * 4 * Copyright (C) 1996-2003 Russell King. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License version 2 as 8 * published by the Free Software Foundation. 9 */ 10#include <linux/module.h> 11#include <linux/types.h> 12#include <linux/tty.h> 13#include <linux/serial_core.h> 14#include <linux/errno.h> 15#include <linux/ioport.h> 16#include <linux/slab.h> 17#include <linux/device.h> 18#include <linux/init.h> 19 20#include <asm/io.h> 21#include <asm/ecard.h> 22#include <asm/string.h> 23 24#include "8250.h" 25 26#define MAX_PORTS 3 27 28struct serial_card_type { 29 unsigned int num_ports; 30 unsigned int uartclk; 31 unsigned int type; 32 unsigned int offset[MAX_PORTS]; 33}; 34 35struct serial_card_info { 36 unsigned int num_ports; 37 int ports[MAX_PORTS]; 38 void __iomem *vaddr; 39}; 40 41static int __devinit 42serial_card_probe(struct expansion_card *ec, const struct ecard_id *id) 43{ 44 struct serial_card_info *info; 45 struct serial_card_type *type = id->data; 46 struct uart_port port; 47 unsigned long bus_addr; 48 unsigned int i; 49 50 info = kzalloc(sizeof(struct serial_card_info), GFP_KERNEL); 51 if (!info) 52 return -ENOMEM; 53 54 info->num_ports = type->num_ports; 55 56 bus_addr = ecard_resource_start(ec, type->type); 57 info->vaddr = ecardm_iomap(ec, type->type, 0, 0); 58 if (!info->vaddr) { 59 kfree(info); 60 return -ENOMEM; 61 } 62 63 ecard_set_drvdata(ec, info); 64 65 memset(&port, 0, sizeof(struct uart_port)); 66 port.irq = ec->irq; 67 port.flags = UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ; 68 port.uartclk = type->uartclk; 69 port.iotype = UPIO_MEM; 70 port.regshift = 2; 71 port.dev = &ec->dev; 72 73 for (i = 0; i < info->num_ports; i ++) { 74 port.membase = info->vaddr + type->offset[i]; 75 port.mapbase = bus_addr + type->offset[i]; 76 77 info->ports[i] = serial8250_register_port(&port); 78 } 79 80 return 0; 81} 82 83static void __devexit serial_card_remove(struct expansion_card *ec) 84{ 85 struct serial_card_info *info = ecard_get_drvdata(ec); 86 int i; 87 88 ecard_set_drvdata(ec, NULL); 89 90 for (i = 0; i < info->num_ports; i++) 91 if (info->ports[i] > 0) 92 serial8250_unregister_port(info->ports[i]); 93 94 kfree(info); 95} 96 97static struct serial_card_type atomwide_type = { 98 .num_ports = 3, 99 .uartclk = 7372800, 100 .type = ECARD_RES_IOCSLOW, 101 .offset = { 0x2800, 0x2400, 0x2000 }, 102}; 103 104static struct serial_card_type serport_type = { 105 .num_ports = 2, 106 .uartclk = 3686400, 107 .type = ECARD_RES_IOCSLOW, 108 .offset = { 0x2000, 0x2020 }, 109}; 110 111static const struct ecard_id serial_cids[] = { 112 { MANU_ATOMWIDE, PROD_ATOMWIDE_3PSERIAL, &atomwide_type }, 113 { MANU_SERPORT, PROD_SERPORT_DSPORT, &serport_type }, 114 { 0xffff, 0xffff } 115}; 116 117static struct ecard_driver serial_card_driver = { 118 .probe = serial_card_probe, 119 .remove = __devexit_p(serial_card_remove), 120 .id_table = serial_cids, 121 .drv = { 122 .name = "8250_acorn", 123 }, 124}; 125 126static int __init serial_card_init(void) 127{ 128 return ecard_register_driver(&serial_card_driver); 129} 130 131static void __exit serial_card_exit(void) 132{ 133 ecard_remove_driver(&serial_card_driver); 134} 135 136MODULE_AUTHOR("Russell King"); 137MODULE_DESCRIPTION("Acorn 8250-compatible serial port expansion card driver"); 138MODULE_LICENSE("GPL"); 139 140module_init(serial_card_init); 141module_exit(serial_card_exit); 142