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1 | /*====================================================================== |
2 | |
3 | A driver for PCMCIA parallel port adapters |
4 | |
5 | (specifically, for the Quatech SPP-100 EPP card: other cards will |
6 | probably require driver tweaks) |
7 | |
8 | parport_cs.c 1.29 2002/10/11 06:57:41 |
9 | |
10 | The contents of this file are subject to the Mozilla Public |
11 | License Version 1.1 (the "License"); you may not use this file |
12 | except in compliance with the License. You may obtain a copy of |
13 | the License at http://www.mozilla.org/MPL/ |
14 | |
15 | Software distributed under the License is distributed on an "AS |
16 | IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
17 | implied. See the License for the specific language governing |
18 | rights and limitations under the License. |
19 | |
20 | The initial developer of the original code is David A. Hinds |
21 | <dahinds@users.sourceforge.net>. Portions created by David A. Hinds |
22 | are Copyright (C) 1999 David A. Hinds. All Rights Reserved. |
23 | |
24 | Alternatively, the contents of this file may be used under the |
25 | terms of the GNU General Public License version 2 (the "GPL"), in |
26 | which case the provisions of the GPL are applicable instead of the |
27 | above. If you wish to allow the use of your version of this file |
28 | only under the terms of the GPL and not to allow others to use |
29 | your version of this file under the MPL, indicate your decision |
30 | by deleting the provisions above and replace them with the notice |
31 | and other provisions required by the GPL. If you do not delete |
32 | the provisions above, a recipient may use your version of this |
33 | file under either the MPL or the GPL. |
34 | |
35 | ======================================================================*/ |
36 | |
37 | #include <linux/kernel.h> |
38 | #include <linux/module.h> |
39 | #include <linux/init.h> |
40 | #include <linux/ptrace.h> |
41 | #include <linux/slab.h> |
42 | #include <linux/string.h> |
43 | #include <linux/timer.h> |
44 | #include <linux/ioport.h> |
45 | #include <linux/major.h> |
46 | #include <linux/interrupt.h> |
47 | |
48 | #include <linux/parport.h> |
49 | #include <linux/parport_pc.h> |
50 | |
51 | #include <pcmcia/cistpl.h> |
52 | #include <pcmcia/ds.h> |
53 | #include <pcmcia/cisreg.h> |
54 | #include <pcmcia/ciscode.h> |
55 | |
56 | /*====================================================================*/ |
57 | |
58 | /* Module parameters */ |
59 | |
60 | MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); |
61 | MODULE_DESCRIPTION("PCMCIA parallel port card driver"); |
62 | MODULE_LICENSE("Dual MPL/GPL"); |
63 | |
64 | #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) |
65 | |
66 | INT_MODULE_PARM(epp_mode, 1); |
67 | |
68 | |
69 | /*====================================================================*/ |
70 | |
71 | #define FORCE_EPP_MODE 0x08 |
72 | |
73 | typedef struct parport_info_t { |
74 | struct pcmcia_device *p_dev; |
75 | int ndev; |
76 | struct parport *port; |
77 | } parport_info_t; |
78 | |
79 | static void parport_detach(struct pcmcia_device *p_dev); |
80 | static int parport_config(struct pcmcia_device *link); |
81 | static void parport_cs_release(struct pcmcia_device *); |
82 | |
83 | static int parport_probe(struct pcmcia_device *link) |
84 | { |
85 | parport_info_t *info; |
86 | |
87 | dev_dbg(&link->dev, "parport_attach()\n"); |
88 | |
89 | /* Create new parport device */ |
90 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
91 | if (!info) return -ENOMEM; |
92 | link->priv = info; |
93 | info->p_dev = link; |
94 | |
95 | link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; |
96 | |
97 | return parport_config(link); |
98 | } /* parport_attach */ |
99 | |
100 | static void parport_detach(struct pcmcia_device *link) |
101 | { |
102 | dev_dbg(&link->dev, "parport_detach\n"); |
103 | |
104 | parport_cs_release(link); |
105 | |
106 | kfree(link->priv); |
107 | } /* parport_detach */ |
108 | |
109 | static int parport_config_check(struct pcmcia_device *p_dev, void *priv_data) |
110 | { |
111 | p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
112 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; |
113 | p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; |
114 | p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; |
115 | |
116 | return pcmcia_request_io(p_dev); |
117 | } |
118 | |
119 | static int parport_config(struct pcmcia_device *link) |
120 | { |
121 | parport_info_t *info = link->priv; |
122 | struct parport *p; |
123 | int ret; |
124 | |
125 | dev_dbg(&link->dev, "parport_config\n"); |
126 | |
127 | if (epp_mode) |
128 | link->config_index |= FORCE_EPP_MODE; |
129 | |
130 | ret = pcmcia_loop_config(link, parport_config_check, NULL); |
131 | if (ret) |
132 | goto failed; |
133 | |
134 | if (!link->irq) |
135 | goto failed; |
136 | ret = pcmcia_enable_device(link); |
137 | if (ret) |
138 | goto failed; |
139 | |
140 | p = parport_pc_probe_port(link->resource[0]->start, |
141 | link->resource[1]->start, |
142 | link->irq, PARPORT_DMA_NONE, |
143 | &link->dev, IRQF_SHARED); |
144 | if (p == NULL) { |
145 | printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at " |
146 | "0x%3x, irq %u failed\n", |
147 | (unsigned int) link->resource[0]->start, |
148 | link->irq); |
149 | goto failed; |
150 | } |
151 | |
152 | p->modes |= PARPORT_MODE_PCSPP; |
153 | if (epp_mode) |
154 | p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP; |
155 | info->ndev = 1; |
156 | info->port = p; |
157 | |
158 | return 0; |
159 | |
160 | failed: |
161 | parport_cs_release(link); |
162 | return -ENODEV; |
163 | } /* parport_config */ |
164 | |
165 | static void parport_cs_release(struct pcmcia_device *link) |
166 | { |
167 | parport_info_t *info = link->priv; |
168 | |
169 | dev_dbg(&link->dev, "parport_release\n"); |
170 | |
171 | if (info->ndev) { |
172 | struct parport *p = info->port; |
173 | parport_pc_unregister_port(p); |
174 | } |
175 | info->ndev = 0; |
176 | |
177 | pcmcia_disable_device(link); |
178 | } /* parport_cs_release */ |
179 | |
180 | |
181 | static const struct pcmcia_device_id parport_ids[] = { |
182 | PCMCIA_DEVICE_FUNC_ID(3), |
183 | PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc), |
184 | PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003), |
185 | PCMCIA_DEVICE_NULL |
186 | }; |
187 | MODULE_DEVICE_TABLE(pcmcia, parport_ids); |
188 | |
189 | static struct pcmcia_driver parport_cs_driver = { |
190 | .owner = THIS_MODULE, |
191 | .name = "parport_cs", |
192 | .probe = parport_probe, |
193 | .remove = parport_detach, |
194 | .id_table = parport_ids, |
195 | }; |
196 | |
197 | static int __init init_parport_cs(void) |
198 | { |
199 | return pcmcia_register_driver(&parport_cs_driver); |
200 | } |
201 | |
202 | static void __exit exit_parport_cs(void) |
203 | { |
204 | pcmcia_unregister_driver(&parport_cs_driver); |
205 | } |
206 | |
207 | module_init(init_parport_cs); |
208 | module_exit(exit_parport_cs); |
209 |
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