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/cpufreq.h>
35 #include <linux/gpio.h>
36 #include <linux/init.h>
37 #include <linux/interrupt.h>
39 #include <linux/irq.h>
40 #include <linux/kernel.h>
42 #include <linux/module.h>
43 #include <linux/moduleparam.h>
44 #include <linux/mutex.h>
45 #include <linux/spinlock.h>
46 #include <linux/timer.h>
48 #include <mach/hardware.h>
49 #include <asm/system.h>
51 #include "soc_common.h"
53 static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev);
55 #ifdef CONFIG_PCMCIA_DEBUG
58 module_param(pc_debug, int, 0644);
60 void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
61 int lvl, const char *fmt, ...)
71 printk(KERN_DEBUG "skt%u: %s: %pV", skt->nr, func, &vaf);
76 EXPORT_SYMBOL(soc_pcmcia_debug);
80 #define to_soc_pcmcia_socket(x) \
81 container_of(x, struct soc_pcmcia_socket, socket)
84 calc_speed(unsigned short *spds, int num, unsigned short dflt)
86 unsigned short speed = 0;
89 for (i = 0; i < num; i++)
98 void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *skt,
99 struct soc_pcmcia_timing *timing)
102 calc_speed(skt->spd_io, MAX_IO_WIN, SOC_PCMCIA_IO_ACCESS);
104 calc_speed(skt->spd_mem, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS);
106 calc_speed(skt->spd_attr, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS);
108 EXPORT_SYMBOL(soc_common_pcmcia_get_timing);
110 static void __soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt,
115 for (i = 0; i < nr; i++) {
116 if (skt->stat[i].irq)
117 free_irq(skt->stat[i].irq, skt);
118 if (gpio_is_valid(skt->stat[i].gpio))
119 gpio_free(skt->stat[i].gpio);
122 if (skt->ops->hw_shutdown)
123 skt->ops->hw_shutdown(skt);
126 static void soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
128 __soc_pcmcia_hw_shutdown(skt, ARRAY_SIZE(skt->stat));
131 static int soc_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
135 if (skt->ops->hw_init) {
136 ret = skt->ops->hw_init(skt);
141 for (i = 0; i < ARRAY_SIZE(skt->stat); i++) {
142 if (gpio_is_valid(skt->stat[i].gpio)) {
145 ret = gpio_request_one(skt->stat[i].gpio, GPIOF_IN,
148 __soc_pcmcia_hw_shutdown(skt, i);
152 irq = gpio_to_irq(skt->stat[i].gpio);
154 if (i == SOC_STAT_RDY)
155 skt->socket.pci_irq = irq;
157 skt->stat[i].irq = irq;
160 if (skt->stat[i].irq) {
161 ret = request_irq(skt->stat[i].irq,
162 soc_common_pcmcia_interrupt,
164 skt->stat[i].name, skt);
166 if (gpio_is_valid(skt->stat[i].gpio))
167 gpio_free(skt->stat[i].gpio);
168 __soc_pcmcia_hw_shutdown(skt, i);
177 static void soc_pcmcia_hw_enable(struct soc_pcmcia_socket *skt)
181 for (i = 0; i < ARRAY_SIZE(skt->stat); i++)
182 if (skt->stat[i].irq) {
183 irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_EDGE_RISING);
184 irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_EDGE_BOTH);
188 static void soc_pcmcia_hw_disable(struct soc_pcmcia_socket *skt)
192 for (i = 0; i < ARRAY_SIZE(skt->stat); i++)
193 if (skt->stat[i].irq)
194 irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_NONE);
197 static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt)
199 struct pcmcia_state state;
202 memset(&state, 0, sizeof(struct pcmcia_state));
204 /* Make battery voltage state report 'good' */
208 /* CD is active low by default */
209 if (gpio_is_valid(skt->stat[SOC_STAT_CD].gpio))
210 state.detect = !gpio_get_value(skt->stat[SOC_STAT_CD].gpio);
212 /* RDY and BVD are active high by default */
213 if (gpio_is_valid(skt->stat[SOC_STAT_RDY].gpio))
214 state.ready = !!gpio_get_value(skt->stat[SOC_STAT_RDY].gpio);
215 if (gpio_is_valid(skt->stat[SOC_STAT_BVD1].gpio))
216 state.bvd1 = !!gpio_get_value(skt->stat[SOC_STAT_BVD1].gpio);
217 if (gpio_is_valid(skt->stat[SOC_STAT_BVD2].gpio))
218 state.bvd2 = !!gpio_get_value(skt->stat[SOC_STAT_BVD2].gpio);
220 skt->ops->socket_state(skt, &state);
222 stat = state.detect ? SS_DETECT : 0;
223 stat |= state.ready ? SS_READY : 0;
224 stat |= state.wrprot ? SS_WRPROT : 0;
225 stat |= state.vs_3v ? SS_3VCARD : 0;
226 stat |= state.vs_Xv ? SS_XVCARD : 0;
228 /* The power status of individual sockets is not available
229 * explicitly from the hardware, so we just remember the state
230 * and regurgitate it upon request:
232 stat |= skt->cs_state.Vcc ? SS_POWERON : 0;
234 if (skt->cs_state.flags & SS_IOCARD)
235 stat |= state.bvd1 ? SS_STSCHG : 0;
239 else if (state.bvd2 == 0)
246 * soc_common_pcmcia_config_skt
247 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
249 * Convert PCMCIA socket state to our socket configure structure.
251 static int soc_common_pcmcia_config_skt(
252 struct soc_pcmcia_socket *skt, socket_state_t *state)
256 ret = skt->ops->configure_socket(skt, state);
259 * This really needs a better solution. The IRQ
260 * may or may not be claimed by the driver.
262 if (skt->irq_state != 1 && state->io_irq) {
264 irq_set_irq_type(skt->socket.pci_irq,
265 IRQ_TYPE_EDGE_FALLING);
266 } else if (skt->irq_state == 1 && state->io_irq == 0) {
268 irq_set_irq_type(skt->socket.pci_irq, IRQ_TYPE_NONE);
271 skt->cs_state = *state;
275 printk(KERN_ERR "soc_common_pcmcia: unable to configure "
276 "socket %d\n", skt->nr);
281 /* soc_common_pcmcia_sock_init()
282 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
284 * (Re-)Initialise the socket, turning on status interrupts
285 * and PCMCIA bus. This must wait for power to stabilise
286 * so that the card status signals report correctly.
290 static int soc_common_pcmcia_sock_init(struct pcmcia_socket *sock)
292 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
294 debug(skt, 2, "initializing socket\n");
295 if (skt->ops->socket_init)
296 skt->ops->socket_init(skt);
297 soc_pcmcia_hw_enable(skt);
303 * soc_common_pcmcia_suspend()
304 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
306 * Remove power on the socket, disable IRQs from the card.
307 * Turn off status interrupts, and disable the PCMCIA bus.
311 static int soc_common_pcmcia_suspend(struct pcmcia_socket *sock)
313 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
315 debug(skt, 2, "suspending socket\n");
317 soc_pcmcia_hw_disable(skt);
318 if (skt->ops->socket_suspend)
319 skt->ops->socket_suspend(skt);
324 static DEFINE_SPINLOCK(status_lock);
326 static void soc_common_check_status(struct soc_pcmcia_socket *skt)
330 debug(skt, 4, "entering PCMCIA monitoring thread\n");
336 status = soc_common_pcmcia_skt_state(skt);
338 spin_lock_irqsave(&status_lock, flags);
339 events = (status ^ skt->status) & skt->cs_state.csc_mask;
340 skt->status = status;
341 spin_unlock_irqrestore(&status_lock, flags);
343 debug(skt, 4, "events: %s%s%s%s%s%s\n",
344 events == 0 ? "<NONE>" : "",
345 events & SS_DETECT ? "DETECT " : "",
346 events & SS_READY ? "READY " : "",
347 events & SS_BATDEAD ? "BATDEAD " : "",
348 events & SS_BATWARN ? "BATWARN " : "",
349 events & SS_STSCHG ? "STSCHG " : "");
352 pcmcia_parse_events(&skt->socket, events);
356 /* Let's poll for events in addition to IRQs since IRQ only is unreliable... */
357 static void soc_common_pcmcia_poll_event(unsigned long dummy)
359 struct soc_pcmcia_socket *skt = (struct soc_pcmcia_socket *)dummy;
360 debug(skt, 4, "polling for events\n");
362 mod_timer(&skt->poll_timer, jiffies + SOC_PCMCIA_POLL_PERIOD);
364 soc_common_check_status(skt);
369 * Service routine for socket driver interrupts (requested by the
370 * low-level PCMCIA init() operation via soc_common_pcmcia_thread()).
371 * The actual interrupt-servicing work is performed by
372 * soc_common_pcmcia_thread(), largely because the Card Services event-
373 * handling code performs scheduling operations which cannot be
374 * executed from within an interrupt context.
376 static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev)
378 struct soc_pcmcia_socket *skt = dev;
380 debug(skt, 3, "servicing IRQ %d\n", irq);
382 soc_common_check_status(skt);
389 * Implements the get_status() operation for the in-kernel PCMCIA
390 * service (formerly SS_GetStatus in Card Services). Essentially just
391 * fills in bits in `status' according to internal driver state or
392 * the value of the voltage detect chipselect register.
394 * As a debugging note, during card startup, the PCMCIA core issues
395 * three set_socket() commands in a row the first with RESET deasserted,
396 * the second with RESET asserted, and the last with RESET deasserted
397 * again. Following the third set_socket(), a get_status() command will
398 * be issued. The kernel is looking for the SS_READY flag (see
399 * setup_socket(), reset_socket(), and unreset_socket() in cs.c).
404 soc_common_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status)
406 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
408 skt->status = soc_common_pcmcia_skt_state(skt);
409 *status = skt->status;
416 * Implements the set_socket() operation for the in-kernel PCMCIA
417 * service (formerly SS_SetSocket in Card Services). We more or
418 * less punt all of this work and let the kernel handle the details
419 * of power configuration, reset, &c. We also record the value of
420 * `state' in order to regurgitate it to the PCMCIA core later.
422 static int soc_common_pcmcia_set_socket(
423 struct pcmcia_socket *sock, socket_state_t *state)
425 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
427 debug(skt, 2, "mask: %s%s%s%s%s%s flags: %s%s%s%s%s%s Vcc %d Vpp %d irq %d\n",
428 (state->csc_mask == 0) ? "<NONE> " : "",
429 (state->csc_mask & SS_DETECT) ? "DETECT " : "",
430 (state->csc_mask & SS_READY) ? "READY " : "",
431 (state->csc_mask & SS_BATDEAD) ? "BATDEAD " : "",
432 (state->csc_mask & SS_BATWARN) ? "BATWARN " : "",
433 (state->csc_mask & SS_STSCHG) ? "STSCHG " : "",
434 (state->flags == 0) ? "<NONE> " : "",
435 (state->flags & SS_PWR_AUTO) ? "PWR_AUTO " : "",
436 (state->flags & SS_IOCARD) ? "IOCARD " : "",
437 (state->flags & SS_RESET) ? "RESET " : "",
438 (state->flags & SS_SPKR_ENA) ? "SPKR_ENA " : "",
439 (state->flags & SS_OUTPUT_ENA) ? "OUTPUT_ENA " : "",
440 state->Vcc, state->Vpp, state->io_irq);
442 return soc_common_pcmcia_config_skt(skt, state);
447 * Implements the set_io_map() operation for the in-kernel PCMCIA
448 * service (formerly SS_SetIOMap in Card Services). We configure
449 * the map speed as requested, but override the address ranges
450 * supplied by Card Services.
452 * Returns: 0 on success, -1 on error
454 static int soc_common_pcmcia_set_io_map(
455 struct pcmcia_socket *sock, struct pccard_io_map *map)
457 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
458 unsigned short speed = map->speed;
460 debug(skt, 2, "map %u speed %u start 0x%08llx stop 0x%08llx\n",
461 map->map, map->speed, (unsigned long long)map->start,
462 (unsigned long long)map->stop);
463 debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
464 (map->flags == 0) ? "<NONE>" : "",
465 (map->flags & MAP_ACTIVE) ? "ACTIVE " : "",
466 (map->flags & MAP_16BIT) ? "16BIT " : "",
467 (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "",
468 (map->flags & MAP_0WS) ? "0WS " : "",
469 (map->flags & MAP_WRPROT) ? "WRPROT " : "",
470 (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : "",
471 (map->flags & MAP_PREFETCH) ? "PREFETCH " : "");
473 if (map->map >= MAX_IO_WIN) {
474 printk(KERN_ERR "%s(): map (%d) out of range\n", __func__,
479 if (map->flags & MAP_ACTIVE) {
481 speed = SOC_PCMCIA_IO_ACCESS;
486 skt->spd_io[map->map] = speed;
487 skt->ops->set_timing(skt);
490 map->stop = PAGE_SIZE-1;
492 map->stop -= map->start;
493 map->stop += skt->socket.io_offset;
494 map->start = skt->socket.io_offset;
501 * Implements the set_mem_map() operation for the in-kernel PCMCIA
502 * service (formerly SS_SetMemMap in Card Services). We configure
503 * the map speed as requested, but override the address ranges
504 * supplied by Card Services.
506 * Returns: 0 on success, -ERRNO on error
508 static int soc_common_pcmcia_set_mem_map(
509 struct pcmcia_socket *sock, struct pccard_mem_map *map)
511 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
512 struct resource *res;
513 unsigned short speed = map->speed;
515 debug(skt, 2, "map %u speed %u card_start %08x\n",
516 map->map, map->speed, map->card_start);
517 debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
518 (map->flags == 0) ? "<NONE>" : "",
519 (map->flags & MAP_ACTIVE) ? "ACTIVE " : "",
520 (map->flags & MAP_16BIT) ? "16BIT " : "",
521 (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "",
522 (map->flags & MAP_0WS) ? "0WS " : "",
523 (map->flags & MAP_WRPROT) ? "WRPROT " : "",
524 (map->flags & MAP_ATTRIB) ? "ATTRIB " : "",
525 (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : "");
527 if (map->map >= MAX_WIN)
530 if (map->flags & MAP_ACTIVE) {
537 if (map->flags & MAP_ATTRIB) {
538 res = &skt->res_attr;
539 skt->spd_attr[map->map] = speed;
540 skt->spd_mem[map->map] = 0;
543 skt->spd_attr[map->map] = 0;
544 skt->spd_mem[map->map] = speed;
547 skt->ops->set_timing(skt);
549 map->static_start = res->start + map->card_start;
559 static struct bittbl status_bits[] = {
560 { SS_WRPROT, "SS_WRPROT" },
561 { SS_BATDEAD, "SS_BATDEAD" },
562 { SS_BATWARN, "SS_BATWARN" },
563 { SS_READY, "SS_READY" },
564 { SS_DETECT, "SS_DETECT" },
565 { SS_POWERON, "SS_POWERON" },
566 { SS_STSCHG, "SS_STSCHG" },
567 { SS_3VCARD, "SS_3VCARD" },
568 { SS_XVCARD, "SS_XVCARD" },
571 static struct bittbl conf_bits[] = {
572 { SS_PWR_AUTO, "SS_PWR_AUTO" },
573 { SS_IOCARD, "SS_IOCARD" },
574 { SS_RESET, "SS_RESET" },
575 { SS_DMA_MODE, "SS_DMA_MODE" },
576 { SS_SPKR_ENA, "SS_SPKR_ENA" },
577 { SS_OUTPUT_ENA, "SS_OUTPUT_ENA" },
580 static void dump_bits(char **p, const char *prefix,
581 unsigned int val, struct bittbl *bits, int sz)
586 b += sprintf(b, "%-9s:", prefix);
587 for (i = 0; i < sz; i++)
588 if (val & bits[i].mask)
589 b += sprintf(b, " %s", bits[i].name);
595 * Implements the /sys/class/pcmcia_socket/??/status file.
597 * Returns: the number of characters added to the buffer
599 static ssize_t show_status(
600 struct device *dev, struct device_attribute *attr, char *buf)
602 struct soc_pcmcia_socket *skt =
603 container_of(dev, struct soc_pcmcia_socket, socket.dev);
606 p += sprintf(p, "slot : %d\n", skt->nr);
608 dump_bits(&p, "status", skt->status,
609 status_bits, ARRAY_SIZE(status_bits));
610 dump_bits(&p, "csc_mask", skt->cs_state.csc_mask,
611 status_bits, ARRAY_SIZE(status_bits));
612 dump_bits(&p, "cs_flags", skt->cs_state.flags,
613 conf_bits, ARRAY_SIZE(conf_bits));
615 p += sprintf(p, "Vcc : %d\n", skt->cs_state.Vcc);
616 p += sprintf(p, "Vpp : %d\n", skt->cs_state.Vpp);
617 p += sprintf(p, "IRQ : %d (%d)\n", skt->cs_state.io_irq,
618 skt->socket.pci_irq);
619 if (skt->ops->show_timing)
620 p += skt->ops->show_timing(skt, p);
624 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
627 static struct pccard_operations soc_common_pcmcia_operations = {
628 .init = soc_common_pcmcia_sock_init,
629 .suspend = soc_common_pcmcia_suspend,
630 .get_status = soc_common_pcmcia_get_status,
631 .set_socket = soc_common_pcmcia_set_socket,
632 .set_io_map = soc_common_pcmcia_set_io_map,
633 .set_mem_map = soc_common_pcmcia_set_mem_map,
637 int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt,
638 struct pcmcia_irqs *irqs, int nr)
642 for (i = 0; i < nr; i++) {
643 if (irqs[i].sock != skt->nr)
645 res = request_irq(irqs[i].irq, soc_common_pcmcia_interrupt,
646 IRQF_DISABLED, irqs[i].str, skt);
649 irq_set_irq_type(irqs[i].irq, IRQ_TYPE_NONE);
653 printk(KERN_ERR "PCMCIA: request for IRQ%d failed (%d)\n",
657 if (irqs[i].sock == skt->nr)
658 free_irq(irqs[i].irq, skt);
662 EXPORT_SYMBOL(soc_pcmcia_request_irqs);
664 void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt,
665 struct pcmcia_irqs *irqs, int nr)
669 for (i = 0; i < nr; i++)
670 if (irqs[i].sock == skt->nr)
671 free_irq(irqs[i].irq, skt);
673 EXPORT_SYMBOL(soc_pcmcia_free_irqs);
675 void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt,
676 struct pcmcia_irqs *irqs, int nr)
680 for (i = 0; i < nr; i++)
681 if (irqs[i].sock == skt->nr)
682 irq_set_irq_type(irqs[i].irq, IRQ_TYPE_NONE);
684 EXPORT_SYMBOL(soc_pcmcia_disable_irqs);
686 void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt,
687 struct pcmcia_irqs *irqs, int nr)
691 for (i = 0; i < nr; i++)
692 if (irqs[i].sock == skt->nr) {
693 irq_set_irq_type(irqs[i].irq, IRQ_TYPE_EDGE_RISING);
694 irq_set_irq_type(irqs[i].irq, IRQ_TYPE_EDGE_BOTH);
697 EXPORT_SYMBOL(soc_pcmcia_enable_irqs);
700 static LIST_HEAD(soc_pcmcia_sockets);
701 static DEFINE_MUTEX(soc_pcmcia_sockets_lock);
703 #ifdef CONFIG_CPU_FREQ
705 soc_pcmcia_notifier(struct notifier_block *nb, unsigned long val, void *data)
707 struct soc_pcmcia_socket *skt;
708 struct cpufreq_freqs *freqs = data;
711 mutex_lock(&soc_pcmcia_sockets_lock);
712 list_for_each_entry(skt, &soc_pcmcia_sockets, node)
713 if (skt->ops->frequency_change)
714 ret += skt->ops->frequency_change(skt, val, freqs);
715 mutex_unlock(&soc_pcmcia_sockets_lock);
720 static struct notifier_block soc_pcmcia_notifier_block = {
721 .notifier_call = soc_pcmcia_notifier
724 static int soc_pcmcia_cpufreq_register(void)
728 ret = cpufreq_register_notifier(&soc_pcmcia_notifier_block,
729 CPUFREQ_TRANSITION_NOTIFIER);
731 printk(KERN_ERR "Unable to register CPU frequency change "
732 "notifier for PCMCIA (%d)\n", ret);
735 fs_initcall(soc_pcmcia_cpufreq_register);
737 static void soc_pcmcia_cpufreq_unregister(void)
739 cpufreq_unregister_notifier(&soc_pcmcia_notifier_block,
740 CPUFREQ_TRANSITION_NOTIFIER);
742 module_exit(soc_pcmcia_cpufreq_unregister);
746 void soc_pcmcia_init_one(struct soc_pcmcia_socket *skt,
747 struct pcmcia_low_level *ops, struct device *dev)
752 skt->socket.owner = ops->owner;
753 skt->socket.dev.parent = dev;
754 skt->socket.pci_irq = NO_IRQ;
756 for (i = 0; i < ARRAY_SIZE(skt->stat); i++)
757 skt->stat[i].gpio = -EINVAL;
759 EXPORT_SYMBOL(soc_pcmcia_init_one);
761 void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt)
763 mutex_lock(&soc_pcmcia_sockets_lock);
764 del_timer_sync(&skt->poll_timer);
766 pcmcia_unregister_socket(&skt->socket);
768 soc_pcmcia_hw_shutdown(skt);
770 /* should not be required; violates some lowlevel drivers */
771 soc_common_pcmcia_config_skt(skt, &dead_socket);
773 list_del(&skt->node);
774 mutex_unlock(&soc_pcmcia_sockets_lock);
776 iounmap(skt->virt_io);
778 release_resource(&skt->res_attr);
779 release_resource(&skt->res_mem);
780 release_resource(&skt->res_io);
781 release_resource(&skt->res_skt);
783 EXPORT_SYMBOL(soc_pcmcia_remove_one);
785 int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt)
789 init_timer(&skt->poll_timer);
790 skt->poll_timer.function = soc_common_pcmcia_poll_event;
791 skt->poll_timer.data = (unsigned long)skt;
792 skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD;
794 ret = request_resource(&iomem_resource, &skt->res_skt);
798 ret = request_resource(&skt->res_skt, &skt->res_io);
802 ret = request_resource(&skt->res_skt, &skt->res_mem);
806 ret = request_resource(&skt->res_skt, &skt->res_attr);
810 skt->virt_io = ioremap(skt->res_io.start, 0x10000);
811 if (skt->virt_io == NULL) {
816 mutex_lock(&soc_pcmcia_sockets_lock);
818 list_add(&skt->node, &soc_pcmcia_sockets);
821 * We initialize default socket timing here, because
822 * we are not guaranteed to see a SetIOMap operation at
825 skt->ops->set_timing(skt);
827 ret = soc_pcmcia_hw_init(skt);
831 skt->socket.ops = &soc_common_pcmcia_operations;
832 skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD;
833 skt->socket.resource_ops = &pccard_static_ops;
834 skt->socket.irq_mask = 0;
835 skt->socket.map_size = PAGE_SIZE;
836 skt->socket.io_offset = (unsigned long)skt->virt_io;
838 skt->status = soc_common_pcmcia_skt_state(skt);
840 ret = pcmcia_register_socket(&skt->socket);
844 add_timer(&skt->poll_timer);
846 mutex_unlock(&soc_pcmcia_sockets_lock);
848 ret = device_create_file(&skt->socket.dev, &dev_attr_status);
855 mutex_lock(&soc_pcmcia_sockets_lock);
856 del_timer_sync(&skt->poll_timer);
857 pcmcia_unregister_socket(&skt->socket);
860 soc_pcmcia_hw_shutdown(skt);
862 list_del(&skt->node);
863 mutex_unlock(&soc_pcmcia_sockets_lock);
864 iounmap(skt->virt_io);
866 release_resource(&skt->res_attr);
868 release_resource(&skt->res_mem);
870 release_resource(&skt->res_io);
872 release_resource(&skt->res_skt);
877 EXPORT_SYMBOL(soc_pcmcia_add_one);
879 MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>");
880 MODULE_DESCRIPTION("Linux PCMCIA Card Services: Common SoC support");
881 MODULE_LICENSE("Dual MPL/GPL");