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
28 struct serial_card_type {
29 unsigned int num_ports;
30 unsigned int uartclk;
31 unsigned int type;
32 unsigned int offset[MAX_PORTS];
33 };
34
35 struct serial_card_info {
36 unsigned int num_ports;
37 int ports[MAX_PORTS];
38 void __iomem *vaddr;
39 };
40
41 static int __devinit
42 serial_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
83 static 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
97 static 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
104 static struct serial_card_type serport_type = {
105 .num_ports = 2,
106 .uartclk = 3686400,
107 .type = ECARD_RES_IOCSLOW,
108 .offset = { 0x2000, 0x2020 },
109 };
110
111 static 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
117 static 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
126 static int __init serial_card_init(void)
127 {
128 return ecard_register_driver(&serial_card_driver);
129 }
130
131 static void __exit serial_card_exit(void)
132 {
133 ecard_remove_driver(&serial_card_driver);
134 }
135
136 MODULE_AUTHOR("Russell King");
137 MODULE_DESCRIPTION("Acorn 8250-compatible serial port expansion card driver");
138 MODULE_LICENSE("GPL");
139
140 module_init(serial_card_init);
141 module_exit(serial_card_exit);
142
|
This page was automatically generated by the
LXR engine.
|