Driver core: Remove unneeded get_{device,driver}() calls.
[linux-2.6.git] / drivers / serial / 8250_acorn.c
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);