1 /*======================================================================
3 Common support code for the PCMCIA control functionality of
4 integrated SOCs like the SA-11x0 and PXA2xx microprocessors.
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/
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.
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.
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.
31 ======================================================================*/
34 #include <linux/config.h>
35 #include <linux/module.h>
36 #include <linux/moduleparam.h>
37 #include <linux/init.h>
38 #include <linux/kernel.h>
39 #include <linux/timer.h>
41 #include <linux/interrupt.h>
42 #include <linux/spinlock.h>
43 #include <linux/cpufreq.h>
45 #include <asm/hardware.h>
48 #include <asm/system.h>
50 #include "soc_common.h"
52 /* FIXME: platform dependent resource declaration has to move out of this file */
53 #ifdef CONFIG_ARCH_PXA
54 #include <asm/arch/pxa-regs.h>
60 module_param(pc_debug, int, 0644);
62 void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
63 int lvl, const char *fmt, ...)
67 printk(KERN_DEBUG "skt%u: %s: ", skt->nr, func);
76 #define to_soc_pcmcia_socket(x) container_of(x, struct soc_pcmcia_socket, socket)
79 calc_speed(unsigned short *spds, int num, unsigned short dflt)
81 unsigned short speed = 0;
84 for (i = 0; i < num; i++)
93 void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *skt, struct soc_pcmcia_timing *timing)
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);
99 EXPORT_SYMBOL(soc_common_pcmcia_get_timing);
101 static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt)
103 struct pcmcia_state state;
106 memset(&state, 0, sizeof(struct pcmcia_state));
108 skt->ops->socket_state(skt, &state);
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;
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:
120 stat |= skt->cs_state.Vcc ? SS_POWERON : 0;
122 if (skt->cs_state.flags & SS_IOCARD)
123 stat |= state.bvd1 ? SS_STSCHG : 0;
127 else if (state.bvd2 == 0)
134 * soc_common_pcmcia_config_skt
135 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
137 * Convert PCMCIA socket state to our socket configure structure.
140 soc_common_pcmcia_config_skt(struct soc_pcmcia_socket *skt, socket_state_t *state)
144 ret = skt->ops->configure_socket(skt, state);
147 * This really needs a better solution. The IRQ
148 * may or may not be claimed by the driver.
150 if (skt->irq_state != 1 && state->io_irq) {
152 set_irq_type(skt->irq, IRQT_FALLING);
153 } else if (skt->irq_state == 1 && state->io_irq == 0) {
155 set_irq_type(skt->irq, IRQT_NOEDGE);
158 skt->cs_state = *state;
162 printk(KERN_ERR "soc_common_pcmcia: unable to configure "
163 "socket %d\n", skt->nr);
168 /* soc_common_pcmcia_sock_init()
169 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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.
177 static int soc_common_pcmcia_sock_init(struct pcmcia_socket *sock)
179 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
181 debug(skt, 2, "initializing socket\n");
183 skt->ops->socket_init(skt);
189 * soc_common_pcmcia_suspend()
190 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
192 * Remove power on the socket, disable IRQs from the card.
193 * Turn off status interrupts, and disable the PCMCIA bus.
197 static int soc_common_pcmcia_suspend(struct pcmcia_socket *sock)
199 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
201 debug(skt, 2, "suspending socket\n");
203 skt->ops->socket_suspend(skt);
208 static DEFINE_SPINLOCK(status_lock);
210 static void soc_common_check_status(struct soc_pcmcia_socket *skt)
214 debug(skt, 4, "entering PCMCIA monitoring thread\n");
220 status = soc_common_pcmcia_skt_state(skt);
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);
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 " : "");
236 pcmcia_parse_events(&skt->socket, events);
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)
243 struct soc_pcmcia_socket *skt = (struct soc_pcmcia_socket *)dummy;
244 debug(skt, 4, "polling for events\n");
246 mod_timer(&skt->poll_timer, jiffies + SOC_PCMCIA_POLL_PERIOD);
248 soc_common_check_status(skt);
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.
260 static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev, struct pt_regs *regs)
262 struct soc_pcmcia_socket *skt = dev;
264 debug(skt, 3, "servicing IRQ %d\n", irq);
266 soc_common_check_status(skt);
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.
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).
288 soc_common_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status)
290 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
292 skt->status = soc_common_pcmcia_skt_state(skt);
293 *status = skt->status;
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.
307 soc_common_pcmcia_set_socket(struct pcmcia_socket *sock, socket_state_t *state)
309 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
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);
326 return soc_common_pcmcia_config_skt(skt, state);
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.
336 * Returns: 0 on success, -1 on error
339 soc_common_pcmcia_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *map)
341 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
342 unsigned short speed = map->speed;
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 ":"");
356 if (map->map >= MAX_IO_WIN) {
357 printk(KERN_ERR "%s(): map (%d) out of range\n", __FUNCTION__,
362 if (map->flags & MAP_ACTIVE) {
364 speed = SOC_PCMCIA_IO_ACCESS;
369 skt->spd_io[map->map] = speed;
370 skt->ops->set_timing(skt);
373 map->stop = PAGE_SIZE-1;
375 map->stop -= map->start;
376 map->stop += skt->socket.io_offset;
377 map->start = skt->socket.io_offset;
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.
389 * Returns: 0 on success, -ERRNO on error
392 soc_common_pcmcia_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *map)
394 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
395 struct resource *res;
396 unsigned short speed = map->speed;
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 ":"");
410 if (map->map >= MAX_WIN)
413 if (map->flags & MAP_ACTIVE) {
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;
426 skt->spd_attr[map->map] = 0;
427 skt->spd_mem[map->map] = speed;
430 skt->ops->set_timing(skt);
432 map->static_start = res->start + map->card_start;
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" },
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" },
464 dump_bits(char **p, const char *prefix, unsigned int val, struct bittbl *bits, int sz)
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);
478 * Implements the /sys/class/pcmcia_socket/??/status file.
480 * Returns: the number of characters added to the buffer
482 static ssize_t show_status(struct class_device *class_dev, char *buf)
484 struct soc_pcmcia_socket *skt =
485 container_of(class_dev, struct soc_pcmcia_socket, socket.dev);
488 p+=sprintf(p, "slot : %d\n", skt->nr);
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));
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);
505 static CLASS_DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
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,
518 int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt,
519 struct pcmcia_irqs *irqs, int nr)
523 for (i = 0; i < nr; i++) {
524 if (irqs[i].sock != skt->nr)
526 res = request_irq(irqs[i].irq, soc_common_pcmcia_interrupt,
527 SA_INTERRUPT, irqs[i].str, skt);
530 set_irq_type(irqs[i].irq, IRQT_NOEDGE);
534 printk(KERN_ERR "PCMCIA: request for IRQ%d failed (%d)\n",
538 if (irqs[i].sock == skt->nr)
539 free_irq(irqs[i].irq, skt);
543 EXPORT_SYMBOL(soc_pcmcia_request_irqs);
545 void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt,
546 struct pcmcia_irqs *irqs, int nr)
550 for (i = 0; i < nr; i++)
551 if (irqs[i].sock == skt->nr)
552 free_irq(irqs[i].irq, skt);
554 EXPORT_SYMBOL(soc_pcmcia_free_irqs);
556 void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt,
557 struct pcmcia_irqs *irqs, int nr)
561 for (i = 0; i < nr; i++)
562 if (irqs[i].sock == skt->nr)
563 set_irq_type(irqs[i].irq, IRQT_NOEDGE);
565 EXPORT_SYMBOL(soc_pcmcia_disable_irqs);
567 void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt,
568 struct pcmcia_irqs *irqs, int nr)
572 for (i = 0; i < nr; i++)
573 if (irqs[i].sock == skt->nr) {
574 set_irq_type(irqs[i].irq, IRQT_RISING);
575 set_irq_type(irqs[i].irq, IRQT_BOTHEDGE);
578 EXPORT_SYMBOL(soc_pcmcia_enable_irqs);
581 LIST_HEAD(soc_pcmcia_sockets);
582 DECLARE_MUTEX(soc_pcmcia_sockets_lock);
584 static const char *skt_names[] = {
589 struct skt_dev_info {
591 struct soc_pcmcia_socket skt[0];
594 #define SKT_DEV_INFO_SIZE(n) \
595 (sizeof(struct skt_dev_info) + (n)*sizeof(struct soc_pcmcia_socket))
597 #ifdef CONFIG_CPU_FREQ
599 soc_pcmcia_notifier(struct notifier_block *nb, unsigned long val, void *data)
601 struct soc_pcmcia_socket *skt;
602 struct cpufreq_freqs *freqs = data;
605 down(&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 up(&soc_pcmcia_sockets_lock);
614 static struct notifier_block soc_pcmcia_notifier_block = {
615 .notifier_call = soc_pcmcia_notifier
618 static int soc_pcmcia_cpufreq_register(void)
622 ret = cpufreq_register_notifier(&soc_pcmcia_notifier_block,
623 CPUFREQ_TRANSITION_NOTIFIER);
625 printk(KERN_ERR "Unable to register CPU frequency change "
626 "notifier for PCMCIA (%d)\n", ret);
630 static void soc_pcmcia_cpufreq_unregister(void)
632 cpufreq_unregister_notifier(&soc_pcmcia_notifier_block, CPUFREQ_TRANSITION_NOTIFIER);
636 static int soc_pcmcia_cpufreq_register(void) { return 0; }
637 static void soc_pcmcia_cpufreq_unregister(void) {}
640 int soc_common_drv_pcmcia_probe(struct device *dev, struct pcmcia_low_level *ops, int first, int nr)
642 struct skt_dev_info *sinfo;
643 struct soc_pcmcia_socket *skt;
646 down(&soc_pcmcia_sockets_lock);
648 sinfo = kmalloc(SKT_DEV_INFO_SIZE(nr), GFP_KERNEL);
654 memset(sinfo, 0, SKT_DEV_INFO_SIZE(nr));
658 * Initialise the per-socket structure.
660 for (i = 0; i < nr; i++) {
661 skt = &sinfo->skt[i];
663 skt->socket.ops = &soc_common_pcmcia_operations;
664 skt->socket.owner = ops->owner;
665 skt->socket.dev.dev = dev;
667 init_timer(&skt->poll_timer);
668 skt->poll_timer.function = soc_common_pcmcia_poll_event;
669 skt->poll_timer.data = (unsigned long)skt;
670 skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD;
677 skt->res_skt.start = _PCMCIA(skt->nr);
678 skt->res_skt.end = _PCMCIA(skt->nr) + PCMCIASp - 1;
679 skt->res_skt.name = skt_names[skt->nr];
680 skt->res_skt.flags = IORESOURCE_MEM;
682 ret = request_resource(&iomem_resource, &skt->res_skt);
686 skt->res_io.start = _PCMCIAIO(skt->nr);
687 skt->res_io.end = _PCMCIAIO(skt->nr) + PCMCIAIOSp - 1;
688 skt->res_io.name = "io";
689 skt->res_io.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
691 ret = request_resource(&skt->res_skt, &skt->res_io);
695 skt->res_mem.start = _PCMCIAMem(skt->nr);
696 skt->res_mem.end = _PCMCIAMem(skt->nr) + PCMCIAMemSp - 1;
697 skt->res_mem.name = "memory";
698 skt->res_mem.flags = IORESOURCE_MEM;
700 ret = request_resource(&skt->res_skt, &skt->res_mem);
704 skt->res_attr.start = _PCMCIAAttr(skt->nr);
705 skt->res_attr.end = _PCMCIAAttr(skt->nr) + PCMCIAAttrSp - 1;
706 skt->res_attr.name = "attribute";
707 skt->res_attr.flags = IORESOURCE_MEM;
709 ret = request_resource(&skt->res_skt, &skt->res_attr);
713 skt->virt_io = ioremap(skt->res_io.start, 0x10000);
714 if (skt->virt_io == NULL) {
719 if (list_empty(&soc_pcmcia_sockets))
720 soc_pcmcia_cpufreq_register();
722 list_add(&skt->node, &soc_pcmcia_sockets);
725 * We initialize default socket timing here, because
726 * we are not guaranteed to see a SetIOMap operation at
729 ops->set_timing(skt);
731 ret = ops->hw_init(skt);
735 skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD;
736 skt->socket.resource_ops = &pccard_static_ops;
737 skt->socket.irq_mask = 0;
738 skt->socket.map_size = PAGE_SIZE;
739 skt->socket.pci_irq = skt->irq;
740 skt->socket.io_offset = (unsigned long)skt->virt_io;
742 skt->status = soc_common_pcmcia_skt_state(skt);
744 ret = pcmcia_register_socket(&skt->socket);
748 WARN_ON(skt->socket.sock != i);
750 add_timer(&skt->poll_timer);
752 class_device_create_file(&skt->socket.dev, &class_device_attr_status);
755 dev_set_drvdata(dev, sinfo);
760 skt = &sinfo->skt[i];
762 del_timer_sync(&skt->poll_timer);
763 pcmcia_unregister_socket(&skt->socket);
766 flush_scheduled_work();
768 ops->hw_shutdown(skt);
770 list_del(&skt->node);
771 iounmap(skt->virt_io);
773 release_resource(&skt->res_attr);
775 release_resource(&skt->res_mem);
777 release_resource(&skt->res_io);
779 release_resource(&skt->res_skt);
787 up(&soc_pcmcia_sockets_lock);
791 int soc_common_drv_pcmcia_remove(struct device *dev)
793 struct skt_dev_info *sinfo = dev_get_drvdata(dev);
796 dev_set_drvdata(dev, NULL);
798 down(&soc_pcmcia_sockets_lock);
799 for (i = 0; i < sinfo->nskt; i++) {
800 struct soc_pcmcia_socket *skt = &sinfo->skt[i];
802 del_timer_sync(&skt->poll_timer);
804 pcmcia_unregister_socket(&skt->socket);
806 flush_scheduled_work();
808 skt->ops->hw_shutdown(skt);
810 soc_common_pcmcia_config_skt(skt, &dead_socket);
812 list_del(&skt->node);
813 iounmap(skt->virt_io);
815 release_resource(&skt->res_attr);
816 release_resource(&skt->res_mem);
817 release_resource(&skt->res_io);
818 release_resource(&skt->res_skt);
820 if (list_empty(&soc_pcmcia_sockets))
821 soc_pcmcia_cpufreq_unregister();
823 up(&soc_pcmcia_sockets_lock);