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1da177e4 LT |
1 | /* |
2 | * | |
3 | * Alchemy Semi Au1000 pcmcia driver | |
4 | * | |
5 | * Copyright 2001-2003 MontaVista Software Inc. | |
6 | * Author: MontaVista Software, Inc. | |
7 | * ppopov@embeddedalley.com or source@mvista.com | |
8 | * | |
9 | * Copyright 2004 Pete Popov, Embedded Alley Solutions, Inc. | |
10 | * Updated the driver to 2.6. Followed the sa11xx API and largely | |
11 | * copied many of the hardware independent functions. | |
12 | * | |
13 | * ######################################################################## | |
14 | * | |
15 | * This program is free software; you can distribute it and/or modify it | |
16 | * under the terms of the GNU General Public License (Version 2) as | |
17 | * published by the Free Software Foundation. | |
18 | * | |
19 | * This program is distributed in the hope it will be useful, but WITHOUT | |
20 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
21 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
22 | * for more details. | |
23 | * | |
24 | * You should have received a copy of the GNU General Public License along | |
25 | * with this program; if not, write to the Free Software Foundation, Inc., | |
26 | * 59 Temple Place - Suite 330, Boston MA 02111-1307, USA. | |
27 | * | |
28 | * ######################################################################## | |
29 | * | |
30 | * | |
31 | */ | |
32 | ||
33 | #include <linux/module.h> | |
34 | #include <linux/moduleparam.h> | |
35 | #include <linux/init.h> | |
1da177e4 LT |
36 | #include <linux/cpufreq.h> |
37 | #include <linux/ioport.h> | |
38 | #include <linux/kernel.h> | |
39 | #include <linux/timer.h> | |
40 | #include <linux/mm.h> | |
41 | #include <linux/notifier.h> | |
42 | #include <linux/interrupt.h> | |
43 | #include <linux/spinlock.h> | |
12d1e75d | 44 | #include <linux/mutex.h> |
d052d1be | 45 | #include <linux/platform_device.h> |
5a0e3ad6 | 46 | #include <linux/slab.h> |
1da177e4 LT |
47 | |
48 | #include <asm/io.h> | |
49 | #include <asm/irq.h> | |
50 | #include <asm/system.h> | |
51 | ||
52 | #include <asm/mach-au1x00/au1000.h> | |
53 | #include "au1000_generic.h" | |
54 | ||
55 | MODULE_LICENSE("GPL"); | |
56 | MODULE_AUTHOR("Pete Popov <ppopov@embeddedalley.com>"); | |
57 | MODULE_DESCRIPTION("Linux PCMCIA Card Services: Au1x00 Socket Controller"); | |
58 | ||
59 | #if 0 | |
60 | #define debug(x,args...) printk(KERN_DEBUG "%s: " x, __func__ , ##args) | |
61 | #else | |
62 | #define debug(x,args...) | |
63 | #endif | |
64 | ||
65 | #define MAP_SIZE 0x100000 | |
66 | extern struct au1000_pcmcia_socket au1000_pcmcia_socket[]; | |
67 | #define PCMCIA_SOCKET(x) (au1000_pcmcia_socket + (x)) | |
68 | #define to_au1000_socket(x) container_of(x, struct au1000_pcmcia_socket, socket) | |
69 | ||
70 | /* Some boards like to support CF cards as IDE root devices, so they | |
71 | * grab pcmcia sockets directly. | |
72 | */ | |
73 | u32 *pcmcia_base_vaddrs[2]; | |
74 | extern const unsigned long mips_io_port_base; | |
75 | ||
12d1e75d | 76 | static DEFINE_MUTEX(pcmcia_sockets_lock); |
1da177e4 LT |
77 | |
78 | static int (*au1x00_pcmcia_hw_init[])(struct device *dev) = { | |
79 | au1x_board_init, | |
80 | }; | |
81 | ||
82 | static int | |
83 | au1x00_pcmcia_skt_state(struct au1000_pcmcia_socket *skt) | |
84 | { | |
85 | struct pcmcia_state state; | |
86 | unsigned int stat; | |
87 | ||
88 | memset(&state, 0, sizeof(struct pcmcia_state)); | |
89 | ||
90 | skt->ops->socket_state(skt, &state); | |
91 | ||
92 | stat = state.detect ? SS_DETECT : 0; | |
93 | stat |= state.ready ? SS_READY : 0; | |
94 | stat |= state.wrprot ? SS_WRPROT : 0; | |
95 | stat |= state.vs_3v ? SS_3VCARD : 0; | |
96 | stat |= state.vs_Xv ? SS_XVCARD : 0; | |
97 | stat |= skt->cs_state.Vcc ? SS_POWERON : 0; | |
98 | ||
99 | if (skt->cs_state.flags & SS_IOCARD) | |
100 | stat |= state.bvd1 ? SS_STSCHG : 0; | |
101 | else { | |
102 | if (state.bvd1 == 0) | |
103 | stat |= SS_BATDEAD; | |
104 | else if (state.bvd2 == 0) | |
105 | stat |= SS_BATWARN; | |
106 | } | |
107 | return stat; | |
108 | } | |
109 | ||
110 | /* | |
111 | * au100_pcmcia_config_skt | |
112 | * | |
113 | * Convert PCMCIA socket state to our socket configure structure. | |
114 | */ | |
115 | static int | |
116 | au1x00_pcmcia_config_skt(struct au1000_pcmcia_socket *skt, socket_state_t *state) | |
117 | { | |
118 | int ret; | |
119 | ||
120 | ret = skt->ops->configure_socket(skt, state); | |
121 | if (ret == 0) { | |
122 | skt->cs_state = *state; | |
123 | } | |
124 | ||
125 | if (ret < 0) | |
126 | debug("unable to configure socket %d\n", skt->nr); | |
127 | ||
128 | return ret; | |
129 | } | |
130 | ||
131 | /* au1x00_pcmcia_sock_init() | |
132 | * | |
133 | * (Re-)Initialise the socket, turning on status interrupts | |
134 | * and PCMCIA bus. This must wait for power to stabilise | |
135 | * so that the card status signals report correctly. | |
136 | * | |
137 | * Returns: 0 | |
138 | */ | |
139 | static int au1x00_pcmcia_sock_init(struct pcmcia_socket *sock) | |
140 | { | |
141 | struct au1000_pcmcia_socket *skt = to_au1000_socket(sock); | |
142 | ||
143 | debug("initializing socket %u\n", skt->nr); | |
144 | ||
145 | skt->ops->socket_init(skt); | |
146 | return 0; | |
147 | } | |
148 | ||
149 | /* | |
150 | * au1x00_pcmcia_suspend() | |
151 | * | |
152 | * Remove power on the socket, disable IRQs from the card. | |
153 | * Turn off status interrupts, and disable the PCMCIA bus. | |
154 | * | |
155 | * Returns: 0 | |
156 | */ | |
157 | static int au1x00_pcmcia_suspend(struct pcmcia_socket *sock) | |
158 | { | |
159 | struct au1000_pcmcia_socket *skt = to_au1000_socket(sock); | |
160 | ||
161 | debug("suspending socket %u\n", skt->nr); | |
162 | ||
163 | skt->ops->socket_suspend(skt); | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
168 | static DEFINE_SPINLOCK(status_lock); | |
169 | ||
170 | /* | |
171 | * au1x00_check_status() | |
172 | */ | |
173 | static void au1x00_check_status(struct au1000_pcmcia_socket *skt) | |
174 | { | |
175 | unsigned int events; | |
176 | ||
177 | debug("entering PCMCIA monitoring thread\n"); | |
178 | ||
179 | do { | |
180 | unsigned int status; | |
181 | unsigned long flags; | |
182 | ||
183 | status = au1x00_pcmcia_skt_state(skt); | |
184 | ||
185 | spin_lock_irqsave(&status_lock, flags); | |
186 | events = (status ^ skt->status) & skt->cs_state.csc_mask; | |
187 | skt->status = status; | |
188 | spin_unlock_irqrestore(&status_lock, flags); | |
189 | ||
190 | debug("events: %s%s%s%s%s%s\n", | |
191 | events == 0 ? "<NONE>" : "", | |
192 | events & SS_DETECT ? "DETECT " : "", | |
193 | events & SS_READY ? "READY " : "", | |
194 | events & SS_BATDEAD ? "BATDEAD " : "", | |
195 | events & SS_BATWARN ? "BATWARN " : "", | |
196 | events & SS_STSCHG ? "STSCHG " : ""); | |
197 | ||
198 | if (events) | |
199 | pcmcia_parse_events(&skt->socket, events); | |
200 | } while (events); | |
201 | } | |
202 | ||
203 | /* | |
204 | * au1x00_pcmcia_poll_event() | |
205 | * Let's poll for events in addition to IRQs since IRQ only is unreliable... | |
206 | */ | |
207 | static void au1x00_pcmcia_poll_event(unsigned long dummy) | |
208 | { | |
209 | struct au1000_pcmcia_socket *skt = (struct au1000_pcmcia_socket *)dummy; | |
210 | debug("polling for events\n"); | |
211 | ||
212 | mod_timer(&skt->poll_timer, jiffies + AU1000_PCMCIA_POLL_PERIOD); | |
213 | ||
214 | au1x00_check_status(skt); | |
215 | } | |
216 | ||
217 | /* au1x00_pcmcia_get_status() | |
218 | * | |
219 | * From the sa11xx_core.c: | |
220 | * Implements the get_status() operation for the in-kernel PCMCIA | |
221 | * service (formerly SS_GetStatus in Card Services). Essentially just | |
222 | * fills in bits in `status' according to internal driver state or | |
223 | * the value of the voltage detect chipselect register. | |
224 | * | |
225 | * As a debugging note, during card startup, the PCMCIA core issues | |
226 | * three set_socket() commands in a row the first with RESET deasserted, | |
227 | * the second with RESET asserted, and the last with RESET deasserted | |
228 | * again. Following the third set_socket(), a get_status() command will | |
229 | * be issued. The kernel is looking for the SS_READY flag (see | |
230 | * setup_socket(), reset_socket(), and unreset_socket() in cs.c). | |
231 | * | |
232 | * Returns: 0 | |
233 | */ | |
234 | static int | |
235 | au1x00_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status) | |
236 | { | |
237 | struct au1000_pcmcia_socket *skt = to_au1000_socket(sock); | |
238 | ||
239 | skt->status = au1x00_pcmcia_skt_state(skt); | |
240 | *status = skt->status; | |
241 | ||
242 | return 0; | |
243 | } | |
244 | ||
1da177e4 LT |
245 | /* au1x00_pcmcia_set_socket() |
246 | * Implements the set_socket() operation for the in-kernel PCMCIA | |
247 | * service (formerly SS_SetSocket in Card Services). We more or | |
248 | * less punt all of this work and let the kernel handle the details | |
249 | * of power configuration, reset, &c. We also record the value of | |
250 | * `state' in order to regurgitate it to the PCMCIA core later. | |
251 | * | |
252 | * Returns: 0 | |
253 | */ | |
254 | static int | |
255 | au1x00_pcmcia_set_socket(struct pcmcia_socket *sock, socket_state_t *state) | |
256 | { | |
257 | struct au1000_pcmcia_socket *skt = to_au1000_socket(sock); | |
258 | ||
259 | debug("for sock %u\n", skt->nr); | |
260 | ||
261 | debug("\tmask: %s%s%s%s%s%s\n\tflags: %s%s%s%s%s%s\n", | |
262 | (state->csc_mask==0)?"<NONE>":"", | |
263 | (state->csc_mask&SS_DETECT)?"DETECT ":"", | |
264 | (state->csc_mask&SS_READY)?"READY ":"", | |
265 | (state->csc_mask&SS_BATDEAD)?"BATDEAD ":"", | |
266 | (state->csc_mask&SS_BATWARN)?"BATWARN ":"", | |
267 | (state->csc_mask&SS_STSCHG)?"STSCHG ":"", | |
268 | (state->flags==0)?"<NONE>":"", | |
269 | (state->flags&SS_PWR_AUTO)?"PWR_AUTO ":"", | |
270 | (state->flags&SS_IOCARD)?"IOCARD ":"", | |
271 | (state->flags&SS_RESET)?"RESET ":"", | |
272 | (state->flags&SS_SPKR_ENA)?"SPKR_ENA ":"", | |
273 | (state->flags&SS_OUTPUT_ENA)?"OUTPUT_ENA ":""); | |
274 | debug("\tVcc %d Vpp %d irq %d\n", | |
275 | state->Vcc, state->Vpp, state->io_irq); | |
276 | ||
277 | return au1x00_pcmcia_config_skt(skt, state); | |
278 | } | |
279 | ||
280 | int | |
281 | au1x00_pcmcia_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *map) | |
282 | { | |
283 | struct au1000_pcmcia_socket *skt = to_au1000_socket(sock); | |
284 | unsigned int speed; | |
285 | ||
286 | if(map->map>=MAX_IO_WIN){ | |
287 | debug("map (%d) out of range\n", map->map); | |
288 | return -1; | |
289 | } | |
290 | ||
291 | if(map->flags&MAP_ACTIVE){ | |
292 | speed=(map->speed>0)?map->speed:AU1000_PCMCIA_IO_SPEED; | |
293 | skt->spd_io[map->map] = speed; | |
294 | } | |
295 | ||
d39bd564 | 296 | map->start=(unsigned int)(u32)skt->virt_io; |
1da177e4 LT |
297 | map->stop=map->start+MAP_SIZE; |
298 | return 0; | |
299 | ||
300 | } /* au1x00_pcmcia_set_io_map() */ | |
301 | ||
302 | ||
303 | static int | |
304 | au1x00_pcmcia_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *map) | |
305 | { | |
306 | struct au1000_pcmcia_socket *skt = to_au1000_socket(sock); | |
307 | unsigned short speed = map->speed; | |
308 | ||
309 | if(map->map>=MAX_WIN){ | |
310 | debug("map (%d) out of range\n", map->map); | |
311 | return -1; | |
312 | } | |
313 | ||
314 | if (map->flags & MAP_ATTRIB) { | |
315 | skt->spd_attr[map->map] = speed; | |
316 | skt->spd_mem[map->map] = 0; | |
317 | } else { | |
318 | skt->spd_attr[map->map] = 0; | |
319 | skt->spd_mem[map->map] = speed; | |
320 | } | |
321 | ||
322 | if (map->flags & MAP_ATTRIB) { | |
323 | map->static_start = skt->phys_attr + map->card_start; | |
324 | } | |
325 | else { | |
326 | map->static_start = skt->phys_mem + map->card_start; | |
327 | } | |
328 | ||
329 | debug("set_mem_map %d start %08lx card_start %08x\n", | |
330 | map->map, map->static_start, map->card_start); | |
331 | return 0; | |
332 | ||
333 | } /* au1x00_pcmcia_set_mem_map() */ | |
334 | ||
335 | static struct pccard_operations au1x00_pcmcia_operations = { | |
336 | .init = au1x00_pcmcia_sock_init, | |
337 | .suspend = au1x00_pcmcia_suspend, | |
338 | .get_status = au1x00_pcmcia_get_status, | |
1da177e4 LT |
339 | .set_socket = au1x00_pcmcia_set_socket, |
340 | .set_io_map = au1x00_pcmcia_set_io_map, | |
341 | .set_mem_map = au1x00_pcmcia_set_mem_map, | |
342 | }; | |
343 | ||
344 | static const char *skt_names[] = { | |
345 | "PCMCIA socket 0", | |
346 | "PCMCIA socket 1", | |
347 | }; | |
348 | ||
349 | struct skt_dev_info { | |
350 | int nskt; | |
351 | }; | |
352 | ||
353 | int au1x00_pcmcia_socket_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr) | |
354 | { | |
355 | struct skt_dev_info *sinfo; | |
a230a678 | 356 | struct au1000_pcmcia_socket *skt; |
1da177e4 LT |
357 | int ret, i; |
358 | ||
8084b372 | 359 | sinfo = kzalloc(sizeof(struct skt_dev_info), GFP_KERNEL); |
1da177e4 LT |
360 | if (!sinfo) { |
361 | ret = -ENOMEM; | |
362 | goto out; | |
363 | } | |
364 | ||
1da177e4 LT |
365 | sinfo->nskt = nr; |
366 | ||
367 | /* | |
368 | * Initialise the per-socket structure. | |
369 | */ | |
370 | for (i = 0; i < nr; i++) { | |
a230a678 | 371 | skt = PCMCIA_SOCKET(i); |
1da177e4 LT |
372 | memset(skt, 0, sizeof(*skt)); |
373 | ||
dc33a4a3 | 374 | skt->socket.resource_ops = &pccard_static_ops; |
1da177e4 LT |
375 | skt->socket.ops = &au1x00_pcmcia_operations; |
376 | skt->socket.owner = ops->owner; | |
88f45005 | 377 | skt->socket.dev.parent = dev; |
1da177e4 LT |
378 | |
379 | init_timer(&skt->poll_timer); | |
380 | skt->poll_timer.function = au1x00_pcmcia_poll_event; | |
381 | skt->poll_timer.data = (unsigned long)skt; | |
382 | skt->poll_timer.expires = jiffies + AU1000_PCMCIA_POLL_PERIOD; | |
383 | ||
384 | skt->nr = first + i; | |
385 | skt->irq = 255; | |
386 | skt->dev = dev; | |
387 | skt->ops = ops; | |
388 | ||
389 | skt->res_skt.name = skt_names[skt->nr]; | |
390 | skt->res_io.name = "io"; | |
391 | skt->res_io.flags = IORESOURCE_MEM | IORESOURCE_BUSY; | |
392 | skt->res_mem.name = "memory"; | |
393 | skt->res_mem.flags = IORESOURCE_MEM; | |
394 | skt->res_attr.name = "attribute"; | |
395 | skt->res_attr.flags = IORESOURCE_MEM; | |
396 | ||
397 | /* | |
398 | * PCMCIA client drivers use the inb/outb macros to access the | |
399 | * IO registers. Since mips_io_port_base is added to the | |
400 | * access address of the mips implementation of inb/outb, | |
401 | * we need to subtract it here because we want to access the | |
402 | * I/O or MEM address directly, without going through this | |
403 | * "mips_io_port_base" mechanism. | |
404 | */ | |
405 | if (i == 0) { | |
406 | skt->virt_io = (void *) | |
407 | (ioremap((phys_t)AU1X_SOCK0_IO, 0x1000) - | |
408 | (u32)mips_io_port_base); | |
11b897cf ML |
409 | skt->phys_attr = AU1X_SOCK0_PHYS_ATTR; |
410 | skt->phys_mem = AU1X_SOCK0_PHYS_MEM; | |
1da177e4 | 411 | } |
1da177e4 LT |
412 | else { |
413 | skt->virt_io = (void *) | |
414 | (ioremap((phys_t)AU1X_SOCK1_IO, 0x1000) - | |
415 | (u32)mips_io_port_base); | |
11b897cf ML |
416 | skt->phys_attr = AU1X_SOCK1_PHYS_ATTR; |
417 | skt->phys_mem = AU1X_SOCK1_PHYS_MEM; | |
1da177e4 | 418 | } |
1da177e4 LT |
419 | pcmcia_base_vaddrs[i] = (u32 *)skt->virt_io; |
420 | ret = ops->hw_init(skt); | |
421 | ||
422 | skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD; | |
423 | skt->socket.irq_mask = 0; | |
424 | skt->socket.map_size = MAP_SIZE; | |
425 | skt->socket.pci_irq = skt->irq; | |
426 | skt->socket.io_offset = (unsigned long)skt->virt_io; | |
427 | ||
428 | skt->status = au1x00_pcmcia_skt_state(skt); | |
429 | ||
430 | ret = pcmcia_register_socket(&skt->socket); | |
431 | if (ret) | |
432 | goto out_err; | |
433 | ||
434 | WARN_ON(skt->socket.sock != i); | |
435 | ||
436 | add_timer(&skt->poll_timer); | |
437 | } | |
438 | ||
439 | dev_set_drvdata(dev, sinfo); | |
440 | return 0; | |
441 | ||
a230a678 ON |
442 | |
443 | out_err: | |
a230a678 ON |
444 | ops->hw_shutdown(skt); |
445 | while (i-- > 0) { | |
446 | skt = PCMCIA_SOCKET(i); | |
1da177e4 LT |
447 | |
448 | del_timer_sync(&skt->poll_timer); | |
449 | pcmcia_unregister_socket(&skt->socket); | |
3efa9970 AL |
450 | if (i == 0) { |
451 | iounmap(skt->virt_io + (u32)mips_io_port_base); | |
452 | skt->virt_io = NULL; | |
453 | } | |
454 | #ifndef CONFIG_MIPS_XXS1500 | |
455 | else { | |
456 | iounmap(skt->virt_io + (u32)mips_io_port_base); | |
457 | skt->virt_io = NULL; | |
458 | } | |
459 | #endif | |
1da177e4 LT |
460 | ops->hw_shutdown(skt); |
461 | ||
a230a678 | 462 | } |
1da177e4 LT |
463 | kfree(sinfo); |
464 | out: | |
465 | return ret; | |
466 | } | |
467 | ||
7a192ec3 | 468 | int au1x00_drv_pcmcia_remove(struct platform_device *dev) |
1da177e4 | 469 | { |
7a192ec3 | 470 | struct skt_dev_info *sinfo = platform_get_drvdata(dev); |
1da177e4 LT |
471 | int i; |
472 | ||
12d1e75d | 473 | mutex_lock(&pcmcia_sockets_lock); |
7a192ec3 | 474 | platform_set_drvdata(dev, NULL); |
1da177e4 LT |
475 | |
476 | for (i = 0; i < sinfo->nskt; i++) { | |
477 | struct au1000_pcmcia_socket *skt = PCMCIA_SOCKET(i); | |
478 | ||
479 | del_timer_sync(&skt->poll_timer); | |
480 | pcmcia_unregister_socket(&skt->socket); | |
1da177e4 LT |
481 | skt->ops->hw_shutdown(skt); |
482 | au1x00_pcmcia_config_skt(skt, &dead_socket); | |
efe29c0f | 483 | iounmap(skt->virt_io + (u32)mips_io_port_base); |
1da177e4 LT |
484 | skt->virt_io = NULL; |
485 | } | |
486 | ||
487 | kfree(sinfo); | |
12d1e75d | 488 | mutex_unlock(&pcmcia_sockets_lock); |
1da177e4 LT |
489 | return 0; |
490 | } | |
491 | ||
492 | ||
493 | /* | |
494 | * PCMCIA "Driver" API | |
495 | */ | |
496 | ||
7a192ec3 | 497 | static int au1x00_drv_pcmcia_probe(struct platform_device *dev) |
1da177e4 LT |
498 | { |
499 | int i, ret = -ENODEV; | |
500 | ||
12d1e75d | 501 | mutex_lock(&pcmcia_sockets_lock); |
1da177e4 | 502 | for (i=0; i < ARRAY_SIZE(au1x00_pcmcia_hw_init); i++) { |
7a192ec3 | 503 | ret = au1x00_pcmcia_hw_init[i](&dev->dev); |
1da177e4 LT |
504 | if (ret == 0) |
505 | break; | |
506 | } | |
12d1e75d | 507 | mutex_unlock(&pcmcia_sockets_lock); |
1da177e4 LT |
508 | return ret; |
509 | } | |
510 | ||
7a192ec3 ML |
511 | static struct platform_driver au1x00_pcmcia_driver = { |
512 | .driver = { | |
513 | .name = "au1x00-pcmcia", | |
514 | .owner = THIS_MODULE, | |
515 | }, | |
1da177e4 LT |
516 | .probe = au1x00_drv_pcmcia_probe, |
517 | .remove = au1x00_drv_pcmcia_remove, | |
1da177e4 LT |
518 | }; |
519 | ||
1da177e4 LT |
520 | |
521 | /* au1x00_pcmcia_init() | |
522 | * | |
523 | * This routine performs low-level PCMCIA initialization and then | |
524 | * registers this socket driver with Card Services. | |
525 | * | |
526 | * Returns: 0 on success, -ve error code on failure | |
527 | */ | |
528 | static int __init au1x00_pcmcia_init(void) | |
529 | { | |
530 | int error = 0; | |
7a192ec3 | 531 | error = platform_driver_register(&au1x00_pcmcia_driver); |
1da177e4 LT |
532 | return error; |
533 | } | |
534 | ||
535 | /* au1x00_pcmcia_exit() | |
536 | * Invokes the low-level kernel service to free IRQs associated with this | |
537 | * socket controller and reset GPIO edge detection. | |
538 | */ | |
539 | static void __exit au1x00_pcmcia_exit(void) | |
540 | { | |
7a192ec3 | 541 | platform_driver_unregister(&au1x00_pcmcia_driver); |
1da177e4 LT |
542 | } |
543 | ||
544 | module_init(au1x00_pcmcia_init); | |
545 | module_exit(au1x00_pcmcia_exit); |