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1da177e4 LT |
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> | |
1da177e4 LT |
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> | |
51dcdfec | 46 | #include <linux/interrupt.h> |
1da177e4 LT |
47 | |
48 | #include <linux/parport.h> | |
49 | #include <linux/parport_pc.h> | |
50 | ||
1da177e4 LT |
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 | ||
1da177e4 LT |
68 | |
69 | /*====================================================================*/ | |
70 | ||
71 | #define FORCE_EPP_MODE 0x08 | |
72 | ||
73 | typedef struct parport_info_t { | |
fd238232 | 74 | struct pcmcia_device *p_dev; |
1da177e4 | 75 | int ndev; |
1da177e4 LT |
76 | struct parport *port; |
77 | } parport_info_t; | |
78 | ||
cc3b4866 | 79 | static void parport_detach(struct pcmcia_device *p_dev); |
15b99ac1 | 80 | static int parport_config(struct pcmcia_device *link); |
fba395ee | 81 | static void parport_cs_release(struct pcmcia_device *); |
1da177e4 LT |
82 | |
83 | /*====================================================================== | |
84 | ||
85 | parport_attach() creates an "instance" of the driver, allocating | |
86 | local data structures for one device. The device is registered | |
87 | with Card Services. | |
88 | ||
89 | ======================================================================*/ | |
90 | ||
15b99ac1 | 91 | static int parport_probe(struct pcmcia_device *link) |
1da177e4 LT |
92 | { |
93 | parport_info_t *info; | |
f8cfa618 | 94 | |
9b44de20 | 95 | dev_dbg(&link->dev, "parport_attach()\n"); |
1da177e4 LT |
96 | |
97 | /* Create new parport device */ | |
dd00cc48 | 98 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
f8cfa618 | 99 | if (!info) return -ENOMEM; |
fd238232 | 100 | link->priv = info; |
fba395ee | 101 | info->p_dev = link; |
1da177e4 | 102 | |
00990e7c | 103 | link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_SET_IO; |
f8cfa618 | 104 | |
15b99ac1 | 105 | return parport_config(link); |
1da177e4 LT |
106 | } /* parport_attach */ |
107 | ||
108 | /*====================================================================== | |
109 | ||
110 | This deletes a driver "instance". The device is de-registered | |
111 | with Card Services. If it has been released, all local data | |
112 | structures are freed. Otherwise, the structures will be freed | |
113 | when the device is released. | |
114 | ||
115 | ======================================================================*/ | |
116 | ||
fba395ee | 117 | static void parport_detach(struct pcmcia_device *link) |
1da177e4 | 118 | { |
9b44de20 | 119 | dev_dbg(&link->dev, "parport_detach\n"); |
cc3b4866 | 120 | |
e2d40963 | 121 | parport_cs_release(link); |
cc3b4866 | 122 | |
1da177e4 | 123 | kfree(link->priv); |
1da177e4 LT |
124 | } /* parport_detach */ |
125 | ||
126 | /*====================================================================== | |
127 | ||
128 | parport_config() is scheduled to run after a CARD_INSERTION event | |
129 | is received, to configure the PCMCIA socket, and to make the | |
130 | parport device available to the system. | |
131 | ||
132 | ======================================================================*/ | |
133 | ||
00990e7c | 134 | static int parport_config_check(struct pcmcia_device *p_dev, void *priv_data) |
84e2d340 | 135 | { |
00990e7c DB |
136 | p_dev->resource[0]->flags &= ~IO_DATA_PATH_WIDTH; |
137 | p_dev->resource[0]->flags |= IO_DATA_PATH_WIDTH_8; | |
138 | p_dev->resource[1]->flags &= ~IO_DATA_PATH_WIDTH; | |
139 | p_dev->resource[1]->flags |= IO_DATA_PATH_WIDTH_8; | |
140 | ||
141 | return pcmcia_request_io(p_dev); | |
84e2d340 DB |
142 | } |
143 | ||
15b99ac1 | 144 | static int parport_config(struct pcmcia_device *link) |
1da177e4 | 145 | { |
1da177e4 | 146 | parport_info_t *info = link->priv; |
1da177e4 | 147 | struct parport *p; |
9b44de20 | 148 | int ret; |
84e2d340 | 149 | |
9b44de20 | 150 | dev_dbg(&link->dev, "parport_config\n"); |
84e2d340 | 151 | |
00990e7c DB |
152 | if (epp_mode) |
153 | link->config_index |= FORCE_EPP_MODE; | |
154 | ||
9b44de20 DB |
155 | ret = pcmcia_loop_config(link, parport_config_check, NULL); |
156 | if (ret) | |
84e2d340 | 157 | goto failed; |
84e2d340 | 158 | |
eb14120f | 159 | if (!link->irq) |
9b44de20 | 160 | goto failed; |
1ac71e5a | 161 | ret = pcmcia_enable_device(link); |
9b44de20 DB |
162 | if (ret) |
163 | goto failed; | |
1da177e4 | 164 | |
9a017a91 DB |
165 | p = parport_pc_probe_port(link->resource[0]->start, |
166 | link->resource[1]->start, | |
eb14120f | 167 | link->irq, PARPORT_DMA_NONE, |
51dcdfec | 168 | &link->dev, IRQF_SHARED); |
1da177e4 LT |
169 | if (p == NULL) { |
170 | printk(KERN_NOTICE "parport_cs: parport_pc_probe_port() at " | |
9a017a91 DB |
171 | "0x%3x, irq %u failed\n", |
172 | (unsigned int) link->resource[0]->start, | |
eb14120f | 173 | link->irq); |
1da177e4 LT |
174 | goto failed; |
175 | } | |
176 | ||
177 | p->modes |= PARPORT_MODE_PCSPP; | |
178 | if (epp_mode) | |
179 | p->modes |= PARPORT_MODE_TRISTATE | PARPORT_MODE_EPP; | |
180 | info->ndev = 1; | |
1da177e4 | 181 | info->port = p; |
1da177e4 | 182 | |
15b99ac1 DB |
183 | return 0; |
184 | ||
1da177e4 LT |
185 | failed: |
186 | parport_cs_release(link); | |
15b99ac1 | 187 | return -ENODEV; |
1da177e4 LT |
188 | } /* parport_config */ |
189 | ||
190 | /*====================================================================== | |
191 | ||
192 | After a card is removed, parport_cs_release() will unregister the | |
193 | device, and release the PCMCIA configuration. If the device is | |
194 | still open, this will be postponed until it is closed. | |
195 | ||
196 | ======================================================================*/ | |
197 | ||
23d5f96c | 198 | static void parport_cs_release(struct pcmcia_device *link) |
1da177e4 | 199 | { |
5f2a71fc | 200 | parport_info_t *info = link->priv; |
1da177e4 | 201 | |
9b44de20 | 202 | dev_dbg(&link->dev, "parport_release\n"); |
5f2a71fc DB |
203 | |
204 | if (info->ndev) { | |
205 | struct parport *p = info->port; | |
206 | parport_pc_unregister_port(p); | |
207 | } | |
208 | info->ndev = 0; | |
1da177e4 | 209 | |
fba395ee | 210 | pcmcia_disable_device(link); |
1da177e4 LT |
211 | } /* parport_cs_release */ |
212 | ||
98e4c28b | 213 | |
476835af DB |
214 | static struct pcmcia_device_id parport_ids[] = { |
215 | PCMCIA_DEVICE_FUNC_ID(3), | |
44e5e33e | 216 | PCMCIA_MFC_DEVICE_PROD_ID12(1,"Elan","Serial+Parallel Port: SP230",0x3beb8cf2,0xdb9e58bc), |
476835af DB |
217 | PCMCIA_DEVICE_MANF_CARD(0x0137, 0x0003), |
218 | PCMCIA_DEVICE_NULL | |
219 | }; | |
220 | MODULE_DEVICE_TABLE(pcmcia, parport_ids); | |
221 | ||
1da177e4 LT |
222 | static struct pcmcia_driver parport_cs_driver = { |
223 | .owner = THIS_MODULE, | |
224 | .drv = { | |
225 | .name = "parport_cs", | |
226 | }, | |
15b99ac1 | 227 | .probe = parport_probe, |
cc3b4866 | 228 | .remove = parport_detach, |
476835af | 229 | .id_table = parport_ids, |
1da177e4 LT |
230 | }; |
231 | ||
232 | static int __init init_parport_cs(void) | |
233 | { | |
234 | return pcmcia_register_driver(&parport_cs_driver); | |
235 | } | |
236 | ||
237 | static void __exit exit_parport_cs(void) | |
238 | { | |
239 | pcmcia_unregister_driver(&parport_cs_driver); | |
1da177e4 LT |
240 | } |
241 | ||
242 | module_init(init_parport_cs); | |
243 | module_exit(exit_parport_cs); |