[PATCH] pcmcia: new suspend core
[linux-2.6.git] / drivers / telephony / ixj_pcmcia.c
1 #include "ixj-ver.h"
2
3 #include <linux/module.h>
4
5 #include <linux/init.h>
6 #include <linux/sched.h>
7 #include <linux/kernel.h>       /* printk() */
8 #include <linux/fs.h>           /* everything... */
9 #include <linux/errno.h>        /* error codes */
10 #include <linux/slab.h>
11
12 #include <pcmcia/cs_types.h>
13 #include <pcmcia/cs.h>
14 #include <pcmcia/cistpl.h>
15 #include <pcmcia/ds.h>
16
17 #include "ixj.h"
18
19 /*
20  *      PCMCIA service support for Quicknet cards
21  */
22  
23 #ifdef PCMCIA_DEBUG
24 static int pc_debug = PCMCIA_DEBUG;
25 module_param(pc_debug, int, 0644);
26 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KERN_DEBUG args)
27 #else
28 #define DEBUG(n, args...)
29 #endif
30
31 typedef struct ixj_info_t {
32         int ndev;
33         dev_node_t node;
34         struct ixj *port;
35 } ixj_info_t;
36
37 static dev_link_t *ixj_attach(void);
38 static void ixj_detach(dev_link_t *);
39 static void ixj_config(dev_link_t * link);
40 static void ixj_cs_release(dev_link_t * link);
41 static int ixj_event(event_t event, int priority, event_callback_args_t * args);
42 static dev_info_t dev_info = "ixj_cs";
43 static dev_link_t *dev_list = NULL;
44
45 static dev_link_t *ixj_attach(void)
46 {
47         client_reg_t client_reg;
48         dev_link_t *link;
49         int ret;
50         DEBUG(0, "ixj_attach()\n");
51         /* Create new ixj device */
52         link = kmalloc(sizeof(struct dev_link_t), GFP_KERNEL);
53         if (!link)
54                 return NULL;
55         memset(link, 0, sizeof(struct dev_link_t));
56         link->io.Attributes1 = IO_DATA_PATH_WIDTH_8;
57         link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
58         link->io.IOAddrLines = 3;
59         link->conf.Vcc = 50;
60         link->conf.IntType = INT_MEMORY_AND_IO;
61         link->priv = kmalloc(sizeof(struct ixj_info_t), GFP_KERNEL);
62         if (!link->priv) {
63                 kfree(link);
64                 return NULL;
65         }
66         memset(link->priv, 0, sizeof(struct ixj_info_t));
67         /* Register with Card Services */
68         link->next = dev_list;
69         dev_list = link;
70         client_reg.dev_info = &dev_info;
71         client_reg.Version = 0x0210;
72         client_reg.event_callback_args.client_data = link;
73         ret = pcmcia_register_client(&link->handle, &client_reg);
74         if (ret != CS_SUCCESS) {
75                 cs_error(link->handle, RegisterClient, ret);
76                 ixj_detach(link);
77                 return NULL;
78         }
79         return link;
80 }
81
82 static void ixj_detach(dev_link_t * link)
83 {
84         dev_link_t **linkp;
85         int ret;
86         DEBUG(0, "ixj_detach(0x%p)\n", link);
87         for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
88                 if (*linkp == link)
89                         break;
90         if (*linkp == NULL)
91                 return;
92         link->state &= ~DEV_RELEASE_PENDING;
93         if (link->state & DEV_CONFIG)
94                 ixj_cs_release(link);
95         if (link->handle) {
96                 ret = pcmcia_deregister_client(link->handle);
97                 if (ret != CS_SUCCESS)
98                         cs_error(link->handle, DeregisterClient, ret);
99         }
100         /* Unlink device structure, free bits */
101         *linkp = link->next;
102         kfree(link->priv);
103         kfree(link);
104 }
105
106 #define CS_CHECK(fn, ret) \
107 do { last_fn = (fn); if ((last_ret = (ret)) != 0) goto cs_failed; } while (0)
108
109 static void ixj_get_serial(dev_link_t * link, IXJ * j)
110 {
111         client_handle_t handle;
112         tuple_t tuple;
113         u_short buf[128];
114         char *str;
115         int last_ret, last_fn, i, place;
116         handle = link->handle;
117         DEBUG(0, "ixj_get_serial(0x%p)\n", link);
118         tuple.TupleData = (cisdata_t *) buf;
119         tuple.TupleOffset = 0;
120         tuple.TupleDataMax = 80;
121         tuple.Attributes = 0;
122         tuple.DesiredTuple = CISTPL_VERS_1;
123         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
124         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
125         str = (char *) buf;
126         printk("PCMCIA Version %d.%d\n", str[0], str[1]);
127         str += 2;
128         printk("%s", str);
129         str = str + strlen(str) + 1;
130         printk(" %s", str);
131         str = str + strlen(str) + 1;
132         place = 1;
133         for (i = strlen(str) - 1; i >= 0; i--) {
134                 switch (str[i]) {
135                 case '0':
136                 case '1':
137                 case '2':
138                 case '3':
139                 case '4':
140                 case '5':
141                 case '6':
142                 case '7':
143                 case '8':
144                 case '9':
145                         j->serial += (str[i] - 48) * place;
146                         break;
147                 case 'A':
148                 case 'B':
149                 case 'C':
150                 case 'D':
151                 case 'E':
152                 case 'F':
153                         j->serial += (str[i] - 55) * place;
154                         break;
155                 case 'a':
156                 case 'b':
157                 case 'c':
158                 case 'd':
159                 case 'e':
160                 case 'f':
161                         j->serial += (str[i] - 87) * place;
162                         break;
163                 }
164                 place = place * 0x10;
165         }
166         str = str + strlen(str) + 1;
167         printk(" version %s\n", str);
168       cs_failed:
169         return;
170 }
171
172 static void ixj_config(dev_link_t * link)
173 {
174         IXJ *j;
175         client_handle_t handle;
176         ixj_info_t *info;
177         tuple_t tuple;
178         u_short buf[128];
179         cisparse_t parse;
180         config_info_t conf;
181         cistpl_cftable_entry_t *cfg = &parse.cftable_entry;
182         cistpl_cftable_entry_t dflt =
183         {
184                 0
185         };
186         int last_ret, last_fn;
187         handle = link->handle;
188         info = link->priv;
189         DEBUG(0, "ixj_config(0x%p)\n", link);
190         tuple.TupleData = (cisdata_t *) buf;
191         tuple.TupleOffset = 0;
192         tuple.TupleDataMax = 255;
193         tuple.Attributes = 0;
194         tuple.DesiredTuple = CISTPL_CONFIG;
195         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
196         CS_CHECK(GetTupleData, pcmcia_get_tuple_data(handle, &tuple));
197         CS_CHECK(ParseTuple, pcmcia_parse_tuple(handle, &tuple, &parse));
198         link->conf.ConfigBase = parse.config.base;
199         link->conf.Present = parse.config.rmask[0];
200         link->state |= DEV_CONFIG;
201         CS_CHECK(GetConfigurationInfo, pcmcia_get_configuration_info(handle, &conf));
202         tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
203         tuple.Attributes = 0;
204         CS_CHECK(GetFirstTuple, pcmcia_get_first_tuple(handle, &tuple));
205         while (1) {
206                 if (pcmcia_get_tuple_data(handle, &tuple) != 0 ||
207                                 pcmcia_parse_tuple(handle, &tuple, &parse) != 0)
208                         goto next_entry;
209                 if ((cfg->io.nwin > 0) || (dflt.io.nwin > 0)) {
210                         cistpl_io_t *io = (cfg->io.nwin) ? &cfg->io : &dflt.io;
211                         link->conf.ConfigIndex = cfg->index;
212                         link->io.BasePort1 = io->win[0].base;
213                         link->io.NumPorts1 = io->win[0].len;
214                         if (io->nwin == 2) {
215                                 link->io.BasePort2 = io->win[1].base;
216                                 link->io.NumPorts2 = io->win[1].len;
217                         }
218                         if (pcmcia_request_io(link->handle, &link->io) != 0)
219                                 goto next_entry;
220                         /* If we've got this far, we're done */
221                         break;
222                 }
223               next_entry:
224                 if (cfg->flags & CISTPL_CFTABLE_DEFAULT)
225                         dflt = *cfg;
226                 CS_CHECK(GetNextTuple, pcmcia_get_next_tuple(handle, &tuple));
227         }
228
229         CS_CHECK(RequestConfiguration, pcmcia_request_configuration(handle, &link->conf));
230
231         /*
232          *      Register the card with the core.
233          */     
234         j=ixj_pcmcia_probe(link->io.BasePort1,link->io.BasePort1 + 0x10);
235
236         info->ndev = 1;
237         info->node.major = PHONE_MAJOR;
238         link->dev = &info->node;
239         ixj_get_serial(link, j);
240         link->state &= ~DEV_CONFIG_PENDING;
241         return;
242       cs_failed:
243         cs_error(link->handle, last_fn, last_ret);
244         ixj_cs_release(link);
245 }
246
247 static void ixj_cs_release(dev_link_t *link)
248 {
249         ixj_info_t *info = link->priv;
250         DEBUG(0, "ixj_cs_release(0x%p)\n", link);
251         info->ndev = 0;
252         link->dev = NULL;
253         pcmcia_release_configuration(link->handle);
254         pcmcia_release_io(link->handle, &link->io);
255         link->state &= ~DEV_CONFIG;
256 }
257
258 static int ixj_suspend(struct pcmcia_device *dev)
259 {
260         dev_link_t *link = dev_to_instance(dev);
261
262         link->state |= DEV_SUSPEND;
263         if (link->state & DEV_CONFIG)
264                 pcmcia_release_configuration(link->handle);
265
266         return 0;
267 }
268
269 static int ixj_resume(struct pcmcia_device *dev)
270 {
271         dev_link_t *link = dev_to_instance(dev);
272
273         link->state &= ~DEV_SUSPEND;
274         if (DEV_OK(link))
275                 pcmcia_request_configuration(link->handle, &link->conf);
276
277         return 0;
278 }
279
280 static int ixj_event(event_t event, int priority, event_callback_args_t * args)
281 {
282         dev_link_t *link = args->client_data;
283         DEBUG(1, "ixj_event(0x%06x)\n", event);
284         switch (event) {
285         case CS_EVENT_CARD_REMOVAL:
286                 link->state &= ~DEV_PRESENT;
287                 if (link->state & DEV_CONFIG) {
288                         link->state |= DEV_RELEASE_PENDING;
289                         ixj_cs_release(link);
290                 }
291                 break;
292         case CS_EVENT_CARD_INSERTION:
293                 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
294                 ixj_config(link);
295                 break;
296         }
297         return 0;
298 }
299
300 static struct pcmcia_device_id ixj_ids[] = {
301         PCMCIA_DEVICE_MANF_CARD(0x0257, 0x0600),
302         PCMCIA_DEVICE_NULL
303 };
304 MODULE_DEVICE_TABLE(pcmcia, ixj_ids);
305
306 static struct pcmcia_driver ixj_driver = {
307         .owner          = THIS_MODULE,
308         .drv            = {
309                 .name   = "ixj_cs",
310         },
311         .attach         = ixj_attach,
312         .event          = ixj_event,
313         .detach         = ixj_detach,
314         .id_table       = ixj_ids,
315         .suspend        = ixj_suspend,
316         .resume         = ixj_resume,
317 };
318
319 static int __init ixj_pcmcia_init(void)
320 {
321         return pcmcia_register_driver(&ixj_driver);
322 }
323
324 static void ixj_pcmcia_exit(void)
325 {
326         pcmcia_unregister_driver(&ixj_driver);
327         BUG_ON(dev_list != NULL);
328 }
329
330 module_init(ixj_pcmcia_init);
331 module_exit(ixj_pcmcia_exit);
332
333 MODULE_LICENSE("GPL");