?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
ACPI: thinkpad-acpi: start the event hunt season
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / pcmcia / soc_common.c
blobf49ac6666153bca4718a4813878bb5fba5f7b429
1 /*======================================================================
2
3 Common support code for the PCMCIA control functionality of
4 integrated SOCs like the SA-11x0 and PXA2xx microprocessors.
5
6 The contents of this file are subject to the Mozilla Public
7 License Version 1.1 (the "License"); you may not use this file
8 except in compliance with the License. You may obtain a copy of
9 the License at http://www.mozilla.org/MPL/
10
11 Software distributed under the License is distributed on an "AS
12 IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
13 implied. See the License for the specific language governing
14 rights and limitations under the License.
15
16 The initial developer of the original code is John G. Dorsey
17 <john+@cs.cmu.edu>. Portions created by John G. Dorsey are
18 Copyright (C) 1999 John G. Dorsey. All Rights Reserved.
19
20 Alternatively, the contents of this file may be used under the
21 terms of the GNU Public License version 2 (the "GPL"), in which
22 case the provisions of the GPL are applicable instead of the
23 above. If you wish to allow the use of your version of this file
24 only under the terms of the GPL and not to allow others to use
25 your version of this file under the MPL, indicate your decision
26 by deleting the provisions above and replace them with the notice
27 and other provisions required by the GPL. If you do not delete
28 the provisions above, a recipient may use your version of this
29 file under either the MPL or the GPL.
30
31 ======================================================================*/
32
33
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/init.h>
37 #include <linux/kernel.h>
38 #include <linux/timer.h>
39 #include <linux/mm.h>
40 #include <linux/mutex.h>
41 #include <linux/interrupt.h>
42 #include <linux/irq.h>
43 #include <linux/spinlock.h>
44 #include <linux/cpufreq.h>
45
46 #include <mach/hardware.h>
47 #include <asm/io.h>
48 #include <asm/system.h>
49
50 #include "soc_common.h"
51
52 /* FIXME: platform dependent resource declaration has to move out of this file */
53 #ifdef CONFIG_ARCH_PXA
54 #include <mach/pxa-regs.h>
55 #endif
56
57 #ifdef CONFIG_PCMCIA_DEBUG
58
59 static int pc_debug;
60 module_param(pc_debug, int, 0644);
61
62 void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
63 int lvl, const char *fmt, ...)
64 {
65 va_list args;
66 if (pc_debug > lvl) {
67 printk(KERN_DEBUG "skt%u: %s: ", skt->nr, func);
68 va_start(args, fmt);
69 vprintk(fmt, args);
70 va_end(args);
71 }
72 }
73
74 #endif
75
76 #define to_soc_pcmcia_socket(x) container_of(x, struct soc_pcmcia_socket, socket)
77
78 static unsigned short
79 calc_speed(unsigned short *spds, int num, unsigned short dflt)
80 {
81 unsigned short speed = 0;
82 int i;
83
84 for (i = 0; i < num; i++)
85 if (speed < spds[i])
86 speed = spds[i];
87 if (speed == 0)
88 speed = dflt;
89
90 return speed;
91 }
92
93 void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *skt, struct soc_pcmcia_timing *timing)
94 {
95 timing->io = calc_speed(skt->spd_io, MAX_IO_WIN, SOC_PCMCIA_IO_ACCESS);
96 timing->mem = calc_speed(skt->spd_mem, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS);
97 timing->attr = calc_speed(skt->spd_attr, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS);
98 }
99 EXPORT_SYMBOL(soc_common_pcmcia_get_timing);
100
101 static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt)
102 {
103 struct pcmcia_state state;
104 unsigned int stat;
105
106 memset(&state, 0, sizeof(struct pcmcia_state));
107
108 skt->ops->socket_state(skt, &state);
109
110 stat = state.detect ? SS_DETECT : 0;
111 stat |= state.ready ? SS_READY : 0;
112 stat |= state.wrprot ? SS_WRPROT : 0;
113 stat |= state.vs_3v ? SS_3VCARD : 0;
114 stat |= state.vs_Xv ? SS_XVCARD : 0;
115
116 /* The power status of individual sockets is not available
117 * explicitly from the hardware, so we just remember the state
118 * and regurgitate it upon request:
119 */
120 stat |= skt->cs_state.Vcc ? SS_POWERON : 0;
121
122 if (skt->cs_state.flags & SS_IOCARD)
123 stat |= state.bvd1 ? SS_STSCHG : 0;
124 else {
125 if (state.bvd1 == 0)
126 stat |= SS_BATDEAD;
127 else if (state.bvd2 == 0)
128 stat |= SS_BATWARN;
129 }
130 return stat;
131 }
132
133 /*
134 * soc_common_pcmcia_config_skt
135 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
136 *
137 * Convert PCMCIA socket state to our socket configure structure.
138 */
139 static int
140 soc_common_pcmcia_config_skt(struct soc_pcmcia_socket *skt, socket_state_t *state)
141 {
142 int ret;
143
144 ret = skt->ops->configure_socket(skt, state);
145 if (ret == 0) {
146 /*
147 * This really needs a better solution. The IRQ
148 * may or may not be claimed by the driver.
149 */
150 if (skt->irq_state != 1 && state->io_irq) {
151 skt->irq_state = 1;
152 set_irq_type(skt->irq, IRQ_TYPE_EDGE_FALLING);
153 } else if (skt->irq_state == 1 && state->io_irq == 0) {
154 skt->irq_state = 0;
155 set_irq_type(skt->irq, IRQ_TYPE_NONE);
156 }
157
158 skt->cs_state = *state;
159 }
160
161 if (ret < 0)
162 printk(KERN_ERR "soc_common_pcmcia: unable to configure "
163 "socket %d\n", skt->nr);
164
165 return ret;
166 }
167
168 /* soc_common_pcmcia_sock_init()
169 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
170 *
171 * (Re-)Initialise the socket, turning on status interrupts
172 * and PCMCIA bus. This must wait for power to stabilise
173 * so that the card status signals report correctly.
174 *
175 * Returns: 0
176 */
177 static int soc_common_pcmcia_sock_init(struct pcmcia_socket *sock)
178 {
179 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
180
181 debug(skt, 2, "initializing socket\n");
182
183 skt->ops->socket_init(skt);
184 return 0;
185 }
186
187
188 /*
189 * soc_common_pcmcia_suspend()
190 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
191 *
192 * Remove power on the socket, disable IRQs from the card.
193 * Turn off status interrupts, and disable the PCMCIA bus.
194 *
195 * Returns: 0
196 */
197 static int soc_common_pcmcia_suspend(struct pcmcia_socket *sock)
198 {
199 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
200
201 debug(skt, 2, "suspending socket\n");
202
203 skt->ops->socket_suspend(skt);
204
205 return 0;
206 }
207
208 static DEFINE_SPINLOCK(status_lock);
209
210 static void soc_common_check_status(struct soc_pcmcia_socket *skt)
211 {
212 unsigned int events;
213
214 debug(skt, 4, "entering PCMCIA monitoring thread\n");
215
216 do {
217 unsigned int status;
218 unsigned long flags;
219
220 status = soc_common_pcmcia_skt_state(skt);
221
222 spin_lock_irqsave(&status_lock, flags);
223 events = (status ^ skt->status) & skt->cs_state.csc_mask;
224 skt->status = status;
225 spin_unlock_irqrestore(&status_lock, flags);
226
227 debug(skt, 4, "events: %s%s%s%s%s%s\n",
228 events == 0 ? "<NONE>" : "",
229 events & SS_DETECT ? "DETECT " : "",
230 events & SS_READY ? "READY " : "",
231 events & SS_BATDEAD ? "BATDEAD " : "",
232 events & SS_BATWARN ? "BATWARN " : "",
233 events & SS_STSCHG ? "STSCHG " : "");
234
235 if (events)
236 pcmcia_parse_events(&skt->socket, events);
237 } while (events);
238 }
239
240 /* Let's poll for events in addition to IRQs since IRQ only is unreliable... */
241 static void soc_common_pcmcia_poll_event(unsigned long dummy)
242 {
243 struct soc_pcmcia_socket *skt = (struct soc_pcmcia_socket *)dummy;
244 debug(skt, 4, "polling for events\n");
245
246 mod_timer(&skt->poll_timer, jiffies + SOC_PCMCIA_POLL_PERIOD);
247
248 soc_common_check_status(skt);
249 }
250
251
252 /*
253 * Service routine for socket driver interrupts (requested by the
254 * low-level PCMCIA init() operation via soc_common_pcmcia_thread()).
255 * The actual interrupt-servicing work is performed by
256 * soc_common_pcmcia_thread(), largely because the Card Services event-
257 * handling code performs scheduling operations which cannot be
258 * executed from within an interrupt context.
259 */
260 static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev)
261 {
262 struct soc_pcmcia_socket *skt = dev;
263
264 debug(skt, 3, "servicing IRQ %d\n", irq);
265
266 soc_common_check_status(skt);
267
268 return IRQ_HANDLED;
269 }
270
271
272 /*
273 * Implements the get_status() operation for the in-kernel PCMCIA
274 * service (formerly SS_GetStatus in Card Services). Essentially just
275 * fills in bits in `status' according to internal driver state or
276 * the value of the voltage detect chipselect register.
277 *
278 * As a debugging note, during card startup, the PCMCIA core issues
279 * three set_socket() commands in a row the first with RESET deasserted,
280 * the second with RESET asserted, and the last with RESET deasserted
281 * again. Following the third set_socket(), a get_status() command will
282 * be issued. The kernel is looking for the SS_READY flag (see
283 * setup_socket(), reset_socket(), and unreset_socket() in cs.c).
284 *
285 * Returns: 0
286 */
287 static int
288 soc_common_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status)
289 {
290 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
291
292 skt->status = soc_common_pcmcia_skt_state(skt);
293 *status = skt->status;
294
295 return 0;
296 }
297
298
299 /*
300 * Implements the set_socket() operation for the in-kernel PCMCIA
301 * service (formerly SS_SetSocket in Card Services). We more or
302 * less punt all of this work and let the kernel handle the details
303 * of power configuration, reset, &c. We also record the value of
304 * `state' in order to regurgitate it to the PCMCIA core later.
305 */
306 static int
307 soc_common_pcmcia_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
308 {
309 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
310
311 debug(skt, 2, "mask: %s%s%s%s%s%sflags: %s%s%s%s%s%sVcc %d Vpp %d irq %d\n",
312 (state->csc_mask==0)?"<NONE> ":"",
313 (state->csc_mask&SS_DETECT)?"DETECT ":"",
314 (state->csc_mask&SS_READY)?"READY ":"",
315 (state->csc_mask&SS_BATDEAD)?"BATDEAD ":"",
316 (state->csc_mask&SS_BATWARN)?"BATWARN ":"",
317 (state->csc_mask&SS_STSCHG)?"STSCHG ":"",
318 (state->flags==0)?"<NONE> ":"",
319 (state->flags&SS_PWR_AUTO)?"PWR_AUTO ":"",
320 (state->flags&SS_IOCARD)?"IOCARD ":"",
321 (state->flags&SS_RESET)?"RESET ":"",
322 (state->flags&SS_SPKR_ENA)?"SPKR_ENA ":"",
323 (state->flags&SS_OUTPUT_ENA)?"OUTPUT_ENA ":"",
324 state->Vcc, state->Vpp, state->io_irq);
325
326 return soc_common_pcmcia_config_skt(skt, state);
327 }
328
329
330 /*
331 * Implements the set_io_map() operation for the in-kernel PCMCIA
332 * service (formerly SS_SetIOMap in Card Services). We configure
333 * the map speed as requested, but override the address ranges
334 * supplied by Card Services.
335 *
336 * Returns: 0 on success, -1 on error
337 */
338 static int
339 soc_common_pcmcia_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *map)
340 {
341 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
342 unsigned short speed = map->speed;
343
344 debug(skt, 2, "map %u speed %u start 0x%08x stop 0x%08x\n",
345 map->map, map->speed, map->start, map->stop);
346 debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
347 (map->flags==0)?"<NONE>":"",
348 (map->flags&MAP_ACTIVE)?"ACTIVE ":"",
349 (map->flags&MAP_16BIT)?"16BIT ":"",
350 (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"",
351 (map->flags&MAP_0WS)?"0WS ":"",
352 (map->flags&MAP_WRPROT)?"WRPROT ":"",
353 (map->flags&MAP_USE_WAIT)?"USE_WAIT ":"",
354 (map->flags&MAP_PREFETCH)?"PREFETCH ":"");
355
356 if (map->map >= MAX_IO_WIN) {
357 printk(KERN_ERR "%s(): map (%d) out of range\n", __func__,
358 map->map);
359 return -1;
360 }
361
362 if (map->flags & MAP_ACTIVE) {
363 if (speed == 0)
364 speed = SOC_PCMCIA_IO_ACCESS;
365 } else {
366 speed = 0;
367 }
368
369 skt->spd_io[map->map] = speed;
370 skt->ops->set_timing(skt);
371
372 if (map->stop == 1)
373 map->stop = PAGE_SIZE-1;
374
375 map->stop -= map->start;
376 map->stop += skt->socket.io_offset;
377 map->start = skt->socket.io_offset;
378
379 return 0;
380 }
381
382
383 /*
384 * Implements the set_mem_map() operation for the in-kernel PCMCIA
385 * service (formerly SS_SetMemMap in Card Services). We configure
386 * the map speed as requested, but override the address ranges
387 * supplied by Card Services.
388 *
389 * Returns: 0 on success, -ERRNO on error
390 */
391 static int
392 soc_common_pcmcia_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *map)
393 {
394 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
395 struct resource *res;
396 unsigned short speed = map->speed;
397
398 debug(skt, 2, "map %u speed %u card_start %08x\n",
399 map->map, map->speed, map->card_start);
400 debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
401 (map->flags==0)?"<NONE>":"",
402 (map->flags&MAP_ACTIVE)?"ACTIVE ":"",
403 (map->flags&MAP_16BIT)?"16BIT ":"",
404 (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"",
405 (map->flags&MAP_0WS)?"0WS ":"",
406 (map->flags&MAP_WRPROT)?"WRPROT ":"",
407 (map->flags&MAP_ATTRIB)?"ATTRIB ":"",
408 (map->flags&MAP_USE_WAIT)?"USE_WAIT ":"");
409
410 if (map->map >= MAX_WIN)
411 return -EINVAL;
412
413 if (map->flags & MAP_ACTIVE) {
414 if (speed == 0)
415 speed = 300;
416 } else {
417 speed = 0;
418 }
419
420 if (map->flags & MAP_ATTRIB) {
421 res = &skt->res_attr;
422 skt->spd_attr[map->map] = speed;
423 skt->spd_mem[map->map] = 0;
424 } else {
425 res = &skt->res_mem;
426 skt->spd_attr[map->map] = 0;
427 skt->spd_mem[map->map] = speed;
428 }
429
430 skt->ops->set_timing(skt);
431
432 map->static_start = res->start + map->card_start;
433
434 return 0;
435 }
436
437 struct bittbl {
438 unsigned int mask;
439 const char *name;
440 };
441
442 static struct bittbl status_bits[] = {
443 { SS_WRPROT, "SS_WRPROT" },
444 { SS_BATDEAD, "SS_BATDEAD" },
445 { SS_BATWARN, "SS_BATWARN" },
446 { SS_READY, "SS_READY" },
447 { SS_DETECT, "SS_DETECT" },
448 { SS_POWERON, "SS_POWERON" },
449 { SS_STSCHG, "SS_STSCHG" },
450 { SS_3VCARD, "SS_3VCARD" },
451 { SS_XVCARD, "SS_XVCARD" },
452 };
453
454 static struct bittbl conf_bits[] = {
455 { SS_PWR_AUTO, "SS_PWR_AUTO" },
456 { SS_IOCARD, "SS_IOCARD" },
457 { SS_RESET, "SS_RESET" },
458 { SS_DMA_MODE, "SS_DMA_MODE" },
459 { SS_SPKR_ENA, "SS_SPKR_ENA" },
460 { SS_OUTPUT_ENA, "SS_OUTPUT_ENA" },
461 };
462
463 static void
464 dump_bits(char **p, const char *prefix, unsigned int val, struct bittbl *bits, int sz)
465 {
466 char *b = *p;
467 int i;
468
469 b += sprintf(b, "%-9s:", prefix);
470 for (i = 0; i < sz; i++)
471 if (val & bits[i].mask)
472 b += sprintf(b, " %s", bits[i].name);
473 *b++ = '\n';
474 *p = b;
475 }
476
477 /*
478 * Implements the /sys/class/pcmcia_socket/??/status file.
479 *
480 * Returns: the number of characters added to the buffer
481 */
482 static ssize_t show_status(struct device *dev, struct device_attribute *attr, char *buf)
483 {
484 struct soc_pcmcia_socket *skt =
485 container_of(dev, struct soc_pcmcia_socket, socket.dev);
486 char *p = buf;
487
488 p+=sprintf(p, "slot : %d\n", skt->nr);
489
490 dump_bits(&p, "status", skt->status,
491 status_bits, ARRAY_SIZE(status_bits));
492 dump_bits(&p, "csc_mask", skt->cs_state.csc_mask,
493 status_bits, ARRAY_SIZE(status_bits));
494 dump_bits(&p, "cs_flags", skt->cs_state.flags,
495 conf_bits, ARRAY_SIZE(conf_bits));
496
497 p+=sprintf(p, "Vcc : %d\n", skt->cs_state.Vcc);
498 p+=sprintf(p, "Vpp : %d\n", skt->cs_state.Vpp);
499 p+=sprintf(p, "IRQ : %d (%d)\n", skt->cs_state.io_irq, skt->irq);
500 if (skt->ops->show_timing)
501 p+=skt->ops->show_timing(skt, p);
502
503 return p-buf;
504 }
505 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
506
507
508 static struct pccard_operations soc_common_pcmcia_operations = {
509 .init = soc_common_pcmcia_sock_init,
510 .suspend = soc_common_pcmcia_suspend,
511 .get_status = soc_common_pcmcia_get_status,
512 .set_socket = soc_common_pcmcia_set_socket,
513 .set_io_map = soc_common_pcmcia_set_io_map,
514 .set_mem_map = soc_common_pcmcia_set_mem_map,
515 };
516
517
518 int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt,
519 struct pcmcia_irqs *irqs, int nr)
520 {
521 int i, res = 0;
522
523 for (i = 0; i < nr; i++) {
524 if (irqs[i].sock != skt->nr)
525 continue;
526 res = request_irq(irqs[i].irq, soc_common_pcmcia_interrupt,
527 IRQF_DISABLED, irqs[i].str, skt);
528 if (res)
529 break;
530 set_irq_type(irqs[i].irq, IRQ_TYPE_NONE);
531 }
532
533 if (res) {
534 printk(KERN_ERR "PCMCIA: request for IRQ%d failed (%d)\n",
535 irqs[i].irq, res);
536
537 while (i--)
538 if (irqs[i].sock == skt->nr)
539 free_irq(irqs[i].irq, skt);
540 }
541 return res;
542 }
543 EXPORT_SYMBOL(soc_pcmcia_request_irqs);
544
545 void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt,
546 struct pcmcia_irqs *irqs, int nr)
547 {
548 int i;
549
550 for (i = 0; i < nr; i++)
551 if (irqs[i].sock == skt->nr)
552 free_irq(irqs[i].irq, skt);
553 }
554 EXPORT_SYMBOL(soc_pcmcia_free_irqs);
555
556 void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt,
557 struct pcmcia_irqs *irqs, int nr)
558 {
559 int i;
560
561 for (i = 0; i < nr; i++)
562 if (irqs[i].sock == skt->nr)
563 set_irq_type(irqs[i].irq, IRQ_TYPE_NONE);
564 }
565 EXPORT_SYMBOL(soc_pcmcia_disable_irqs);
566
567 void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt,
568 struct pcmcia_irqs *irqs, int nr)
569 {
570 int i;
571
572 for (i = 0; i < nr; i++)
573 if (irqs[i].sock == skt->nr) {
574 set_irq_type(irqs[i].irq, IRQ_TYPE_EDGE_RISING);
575 set_irq_type(irqs[i].irq, IRQ_TYPE_EDGE_BOTH);
576 }
577 }
578 EXPORT_SYMBOL(soc_pcmcia_enable_irqs);
579
580
581 LIST_HEAD(soc_pcmcia_sockets);
582 static DEFINE_MUTEX(soc_pcmcia_sockets_lock);
583
584 static const char *skt_names[] = {
585 "PCMCIA socket 0",
586 "PCMCIA socket 1",
587 };
588
589 struct skt_dev_info {
590 int nskt;
591 struct soc_pcmcia_socket skt[0];
592 };
593
594 #define SKT_DEV_INFO_SIZE(n) \
595 (sizeof(struct skt_dev_info) + (n)*sizeof(struct soc_pcmcia_socket))
596
597 #ifdef CONFIG_CPU_FREQ
598 static int
599 soc_pcmcia_notifier(struct notifier_block *nb, unsigned long val, void *data)
600 {
601 struct soc_pcmcia_socket *skt;
602 struct cpufreq_freqs *freqs = data;
603 int ret = 0;
604
605 mutex_lock(&soc_pcmcia_sockets_lock);
606 list_for_each_entry(skt, &soc_pcmcia_sockets, node)
607 if ( skt->ops->frequency_change )
608 ret += skt->ops->frequency_change(skt, val, freqs);
609 mutex_unlock(&soc_pcmcia_sockets_lock);
610
611 return ret;
612 }
613
614 static struct notifier_block soc_pcmcia_notifier_block = {
615 .notifier_call = soc_pcmcia_notifier
616 };
617
618 static int soc_pcmcia_cpufreq_register(void)
619 {
620 int ret;
621
622 ret = cpufreq_register_notifier(&soc_pcmcia_notifier_block,
623 CPUFREQ_TRANSITION_NOTIFIER);
624 if (ret < 0)
625 printk(KERN_ERR "Unable to register CPU frequency change "
626 "notifier for PCMCIA (%d)\n", ret);
627 return ret;
628 }
629
630 static void soc_pcmcia_cpufreq_unregister(void)
631 {
632 cpufreq_unregister_notifier(&soc_pcmcia_notifier_block, CPUFREQ_TRANSITION_NOTIFIER);
633 }
634
635 #else
636 static int soc_pcmcia_cpufreq_register(void) { return 0; }
637 static void soc_pcmcia_cpufreq_unregister(void) {}
638 #endif
639
640 int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr)
641 {
642 struct skt_dev_info *sinfo;
643 struct soc_pcmcia_socket *skt;
644 int ret, i;
645
646 mutex_lock(&soc_pcmcia_sockets_lock);
647
648 sinfo = kzalloc(SKT_DEV_INFO_SIZE(nr), GFP_KERNEL);
649 if (!sinfo) {
650 ret = -ENOMEM;
651 goto out;
652 }
653
654 sinfo->nskt = nr;
655
656 /*
657 * Initialise the per-socket structure.
658 */
659 for (i = 0; i < nr; i++) {
660 skt = &sinfo->skt[i];
661
662 skt->socket.ops = &soc_common_pcmcia_operations;
663 skt->socket.owner = ops->owner;
664 skt->socket.dev.parent = dev;
665
666 init_timer(&skt->poll_timer);
667 skt->poll_timer.function = soc_common_pcmcia_poll_event;
668 skt->poll_timer.data = (unsigned long)skt;
669 skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD;
670
671 skt->nr = first + i;
672 skt->irq = NO_IRQ;
673 skt->dev = dev;
674 skt->ops = ops;
675
676 skt->res_skt.start = _PCMCIA(skt->nr);
677 skt->res_skt.end = _PCMCIA(skt->nr) + PCMCIASp - 1;
678 skt->res_skt.name = skt_names[skt->nr];
679 skt->res_skt.flags = IORESOURCE_MEM;
680
681 ret = request_resource(&iomem_resource, &skt->res_skt);
682 if (ret)
683 goto out_err_1;
684
685 skt->res_io.start = _PCMCIAIO(skt->nr);
686 skt->res_io.end = _PCMCIAIO(skt->nr) + PCMCIAIOSp - 1;
687 skt->res_io.name = "io";
688 skt->res_io.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
689
690 ret = request_resource(&skt->res_skt, &skt->res_io);
691 if (ret)
692 goto out_err_2;
693
694 skt->res_mem.start = _PCMCIAMem(skt->nr);
695 skt->res_mem.end = _PCMCIAMem(skt->nr) + PCMCIAMemSp - 1;
696 skt->res_mem.name = "memory";
697 skt->res_mem.flags = IORESOURCE_MEM;
698
699 ret = request_resource(&skt->res_skt, &skt->res_mem);
700 if (ret)
701 goto out_err_3;
702
703 skt->res_attr.start = _PCMCIAAttr(skt->nr);
704 skt->res_attr.end = _PCMCIAAttr(skt->nr) + PCMCIAAttrSp - 1;
705 skt->res_attr.name = "attribute";
706 skt->res_attr.flags = IORESOURCE_MEM;
707
708 ret = request_resource(&skt->res_skt, &skt->res_attr);
709 if (ret)
710 goto out_err_4;
711
712 skt->virt_io = ioremap(skt->res_io.start, 0x10000);
713 if (skt->virt_io == NULL) {
714 ret = -ENOMEM;
715 goto out_err_5;
716 }
717
718 if (list_empty(&soc_pcmcia_sockets))
719 soc_pcmcia_cpufreq_register();
720
721 list_add(&skt->node, &soc_pcmcia_sockets);
722
723 /*
724 * We initialize default socket timing here, because
725 * we are not guaranteed to see a SetIOMap operation at
726 * runtime.
727 */
728 ops->set_timing(skt);
729
730 ret = ops->hw_init(skt);
731 if (ret)
732 goto out_err_6;
733
734 skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD;
735 skt->socket.resource_ops = &pccard_static_ops;
736 skt->socket.irq_mask = 0;
737 skt->socket.map_size = PAGE_SIZE;
738 skt->socket.pci_irq = skt->irq;
739 skt->socket.io_offset = (unsigned long)skt->virt_io;
740
741 skt->status = soc_common_pcmcia_skt_state(skt);
742
743 ret = pcmcia_register_socket(&skt->socket);
744 if (ret)
745 goto out_err_7;
746
747 WARN_ON(skt->socket.sock != i);
748
749 add_timer(&skt->poll_timer);
750
751 ret = device_create_file(&skt->socket.dev, &dev_attr_status);
752 if (ret)
753 goto out_err_8;
754 }
755
756 dev_set_drvdata(dev, sinfo);
757 ret = 0;
758 goto out;
759
760 do {
761 skt = &sinfo->skt[i];
762
763 device_remove_file(&skt->socket.dev, &dev_attr_status);
764 out_err_8:
765 del_timer_sync(&skt->poll_timer);
766 pcmcia_unregister_socket(&skt->socket);
767
768 out_err_7:
769 flush_scheduled_work();
770
771 ops->hw_shutdown(skt);
772 out_err_6:
773 list_del(&skt->node);
774 iounmap(skt->virt_io);
775 out_err_5:
776 release_resource(&skt->res_attr);
777 out_err_4:
778 release_resource(&skt->res_mem);
779 out_err_3:
780 release_resource(&skt->res_io);
781 out_err_2:
782 release_resource(&skt->res_skt);
783 out_err_1:
784 i--;
785 } while (i > 0);
786
787 kfree(sinfo);
788
789 out:
790 mutex_unlock(&soc_pcmcia_sockets_lock);
791 return ret;
792 }
793
794 int soc_common_drv_pcmcia_remove(struct device *dev)
795 {
796 struct skt_dev_info *sinfo = dev_get_drvdata(dev);
797 int i;
798
799 dev_set_drvdata(dev, NULL);
800
801 mutex_lock(&soc_pcmcia_sockets_lock);
802 for (i = 0; i < sinfo->nskt; i++) {
803 struct soc_pcmcia_socket *skt = &sinfo->skt[i];
804
805 del_timer_sync(&skt->poll_timer);
806
807 pcmcia_unregister_socket(&skt->socket);
808
809 flush_scheduled_work();
810
811 skt->ops->hw_shutdown(skt);
812
813 soc_common_pcmcia_config_skt(skt, &dead_socket);
814
815 list_del(&skt->node);
816 iounmap(skt->virt_io);
817 skt->virt_io = NULL;
818 release_resource(&skt->res_attr);
819 release_resource(&skt->res_mem);
820 release_resource(&skt->res_io);
821 release_resource(&skt->res_skt);
822 }
823 if (list_empty(&soc_pcmcia_sockets))
824 soc_pcmcia_cpufreq_unregister();
825
826 mutex_unlock(&soc_pcmcia_sockets_lock);
827
828 kfree(sinfo);
829
830 return 0;
831 }
832 EXPORT_SYMBOL(soc_common_drv_pcmcia_remove);
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree