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/gpio/consumer.h>
37 #include <linux/init.h>
38 #include <linux/interrupt.h>
40 #include <linux/irq.h>
41 #include <linux/kernel.h>
43 #include <linux/module.h>
44 #include <linux/moduleparam.h>
45 #include <linux/mutex.h>
46 #include <linux/regulator/consumer.h>
47 #include <linux/spinlock.h>
48 #include <linux/timer.h>
50 #include <mach/hardware.h>
52 #include "soc_common.h"
54 static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev);
56 #ifdef CONFIG_PCMCIA_DEBUG
59 module_param(pc_debug, int, 0644);
61 void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func,
62 int lvl, const char *fmt, ...)
72 printk(KERN_DEBUG "skt%u: %s: %pV", skt->nr, func, &vaf);
77 EXPORT_SYMBOL(soc_pcmcia_debug);
81 #define to_soc_pcmcia_socket(x) \
82 container_of(x, struct soc_pcmcia_socket, socket)
84 int soc_pcmcia_regulator_set(struct soc_pcmcia_socket *skt,
85 struct soc_pcmcia_regulator *r, int v)
98 ret = regulator_set_voltage(r->reg, v * 100000, v * 100000);
100 int vout = regulator_get_voltage(r->reg) / 100000;
102 dev_warn(&skt->socket.dev,
103 "CS requested %s=%u.%uV, applying %u.%uV\n",
104 r == &skt->vcc ? "Vcc" : "Vpp",
105 v / 10, v % 10, vout / 10, vout % 10);
108 ret = regulator_enable(r->reg);
110 ret = regulator_disable(r->reg);
117 EXPORT_SYMBOL_GPL(soc_pcmcia_regulator_set);
119 static unsigned short
120 calc_speed(unsigned short *spds, int num, unsigned short dflt)
122 unsigned short speed = 0;
125 for (i = 0; i < num; i++)
134 void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *skt,
135 struct soc_pcmcia_timing *timing)
138 calc_speed(skt->spd_io, MAX_IO_WIN, SOC_PCMCIA_IO_ACCESS);
140 calc_speed(skt->spd_mem, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS);
142 calc_speed(skt->spd_attr, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS);
144 EXPORT_SYMBOL(soc_common_pcmcia_get_timing);
146 static void __soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt,
151 for (i = 0; i < nr; i++)
152 if (skt->stat[i].irq)
153 free_irq(skt->stat[i].irq, skt);
155 if (skt->ops->hw_shutdown)
156 skt->ops->hw_shutdown(skt);
158 clk_disable_unprepare(skt->clk);
161 static void soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt)
163 __soc_pcmcia_hw_shutdown(skt, ARRAY_SIZE(skt->stat));
166 int soc_pcmcia_request_gpiods(struct soc_pcmcia_socket *skt)
168 struct device *dev = skt->socket.dev.parent;
169 struct gpio_desc *desc;
172 for (i = 0; i < ARRAY_SIZE(skt->stat); i++) {
173 if (!skt->stat[i].name)
176 desc = devm_gpiod_get(dev, skt->stat[i].name, GPIOD_IN);
178 dev_err(dev, "Failed to get GPIO for %s: %ld\n",
179 skt->stat[i].name, PTR_ERR(desc));
180 return PTR_ERR(desc);
183 skt->stat[i].desc = desc;
188 EXPORT_SYMBOL_GPL(soc_pcmcia_request_gpiods);
190 static int soc_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
194 clk_prepare_enable(skt->clk);
196 if (skt->ops->hw_init) {
197 ret = skt->ops->hw_init(skt);
202 for (i = 0; i < ARRAY_SIZE(skt->stat); i++) {
203 if (gpio_is_valid(skt->stat[i].gpio)) {
204 unsigned long flags = GPIOF_IN;
206 /* CD is active low by default */
207 if (i == SOC_STAT_CD)
208 flags |= GPIOF_ACTIVE_LOW;
210 ret = devm_gpio_request_one(skt->socket.dev.parent,
211 skt->stat[i].gpio, flags,
214 __soc_pcmcia_hw_shutdown(skt, i);
218 skt->stat[i].desc = gpio_to_desc(skt->stat[i].gpio);
221 if (i < SOC_STAT_VS1 && skt->stat[i].desc) {
222 int irq = gpiod_to_irq(skt->stat[i].desc);
225 if (i == SOC_STAT_RDY)
226 skt->socket.pci_irq = irq;
228 skt->stat[i].irq = irq;
232 if (skt->stat[i].irq) {
233 ret = request_irq(skt->stat[i].irq,
234 soc_common_pcmcia_interrupt,
236 skt->stat[i].name, skt);
238 __soc_pcmcia_hw_shutdown(skt, i);
247 static void soc_pcmcia_hw_enable(struct soc_pcmcia_socket *skt)
251 for (i = 0; i < ARRAY_SIZE(skt->stat); i++)
252 if (skt->stat[i].irq) {
253 irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_EDGE_RISING);
254 irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_EDGE_BOTH);
258 static void soc_pcmcia_hw_disable(struct soc_pcmcia_socket *skt)
262 for (i = 0; i < ARRAY_SIZE(skt->stat); i++)
263 if (skt->stat[i].irq)
264 irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_NONE);
268 * The CF 3.0 specification says that cards tie VS1 to ground and leave
269 * VS2 open. Many implementations do not wire up the VS signals, so we
270 * provide hard-coded values as per the CF 3.0 spec.
272 void soc_common_cf_socket_state(struct soc_pcmcia_socket *skt,
273 struct pcmcia_state *state)
277 EXPORT_SYMBOL_GPL(soc_common_cf_socket_state);
279 static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt)
281 struct pcmcia_state state;
284 memset(&state, 0, sizeof(struct pcmcia_state));
286 /* Make battery voltage state report 'good' */
290 if (skt->stat[SOC_STAT_CD].desc)
291 state.detect = !!gpiod_get_value(skt->stat[SOC_STAT_CD].desc);
292 if (skt->stat[SOC_STAT_RDY].desc)
293 state.ready = !!gpiod_get_value(skt->stat[SOC_STAT_RDY].desc);
294 if (skt->stat[SOC_STAT_BVD1].desc)
295 state.bvd1 = !!gpiod_get_value(skt->stat[SOC_STAT_BVD1].desc);
296 if (skt->stat[SOC_STAT_BVD2].desc)
297 state.bvd2 = !!gpiod_get_value(skt->stat[SOC_STAT_BVD2].desc);
298 if (skt->stat[SOC_STAT_VS1].desc)
299 state.vs_3v = !!gpiod_get_value(skt->stat[SOC_STAT_VS1].desc);
300 if (skt->stat[SOC_STAT_VS2].desc)
301 state.vs_Xv = !!gpiod_get_value(skt->stat[SOC_STAT_VS2].desc);
303 skt->ops->socket_state(skt, &state);
305 stat = state.detect ? SS_DETECT : 0;
306 stat |= state.ready ? SS_READY : 0;
307 stat |= state.wrprot ? SS_WRPROT : 0;
308 stat |= state.vs_3v ? SS_3VCARD : 0;
309 stat |= state.vs_Xv ? SS_XVCARD : 0;
311 /* The power status of individual sockets is not available
312 * explicitly from the hardware, so we just remember the state
313 * and regurgitate it upon request:
315 stat |= skt->cs_state.Vcc ? SS_POWERON : 0;
317 if (skt->cs_state.flags & SS_IOCARD)
318 stat |= state.bvd1 ? 0 : SS_STSCHG;
322 else if (state.bvd2 == 0)
329 * soc_common_pcmcia_config_skt
330 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
332 * Convert PCMCIA socket state to our socket configure structure.
334 static int soc_common_pcmcia_config_skt(
335 struct soc_pcmcia_socket *skt, socket_state_t *state)
339 ret = skt->ops->configure_socket(skt, state);
341 pr_err("soc_common_pcmcia: unable to configure socket %d\n",
343 /* restore the previous state */
344 WARN_ON(skt->ops->configure_socket(skt, &skt->cs_state));
349 struct gpio_desc *descs[2];
350 int values[2], n = 0;
352 if (skt->gpio_reset) {
353 descs[n] = skt->gpio_reset;
354 values[n++] = !!(state->flags & SS_RESET);
356 if (skt->gpio_bus_enable) {
357 descs[n] = skt->gpio_bus_enable;
358 values[n++] = !!(state->flags & SS_OUTPUT_ENA);
362 gpiod_set_array_value_cansleep(n, descs, values);
365 * This really needs a better solution. The IRQ
366 * may or may not be claimed by the driver.
368 if (skt->irq_state != 1 && state->io_irq) {
370 irq_set_irq_type(skt->socket.pci_irq,
371 IRQ_TYPE_EDGE_FALLING);
372 } else if (skt->irq_state == 1 && state->io_irq == 0) {
374 irq_set_irq_type(skt->socket.pci_irq, IRQ_TYPE_NONE);
377 skt->cs_state = *state;
383 /* soc_common_pcmcia_sock_init()
384 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
386 * (Re-)Initialise the socket, turning on status interrupts
387 * and PCMCIA bus. This must wait for power to stabilise
388 * so that the card status signals report correctly.
392 static int soc_common_pcmcia_sock_init(struct pcmcia_socket *sock)
394 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
396 debug(skt, 2, "initializing socket\n");
397 if (skt->ops->socket_init)
398 skt->ops->socket_init(skt);
399 soc_pcmcia_hw_enable(skt);
405 * soc_common_pcmcia_suspend()
406 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
408 * Remove power on the socket, disable IRQs from the card.
409 * Turn off status interrupts, and disable the PCMCIA bus.
413 static int soc_common_pcmcia_suspend(struct pcmcia_socket *sock)
415 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
417 debug(skt, 2, "suspending socket\n");
419 soc_pcmcia_hw_disable(skt);
420 if (skt->ops->socket_suspend)
421 skt->ops->socket_suspend(skt);
426 static DEFINE_SPINLOCK(status_lock);
428 static void soc_common_check_status(struct soc_pcmcia_socket *skt)
432 debug(skt, 4, "entering PCMCIA monitoring thread\n");
438 status = soc_common_pcmcia_skt_state(skt);
440 spin_lock_irqsave(&status_lock, flags);
441 events = (status ^ skt->status) & skt->cs_state.csc_mask;
442 skt->status = status;
443 spin_unlock_irqrestore(&status_lock, flags);
445 debug(skt, 4, "events: %s%s%s%s%s%s\n",
446 events == 0 ? "<NONE>" : "",
447 events & SS_DETECT ? "DETECT " : "",
448 events & SS_READY ? "READY " : "",
449 events & SS_BATDEAD ? "BATDEAD " : "",
450 events & SS_BATWARN ? "BATWARN " : "",
451 events & SS_STSCHG ? "STSCHG " : "");
454 pcmcia_parse_events(&skt->socket, events);
458 /* Let's poll for events in addition to IRQs since IRQ only is unreliable... */
459 static void soc_common_pcmcia_poll_event(unsigned long dummy)
461 struct soc_pcmcia_socket *skt = (struct soc_pcmcia_socket *)dummy;
462 debug(skt, 4, "polling for events\n");
464 mod_timer(&skt->poll_timer, jiffies + SOC_PCMCIA_POLL_PERIOD);
466 soc_common_check_status(skt);
471 * Service routine for socket driver interrupts (requested by the
472 * low-level PCMCIA init() operation via soc_common_pcmcia_thread()).
473 * The actual interrupt-servicing work is performed by
474 * soc_common_pcmcia_thread(), largely because the Card Services event-
475 * handling code performs scheduling operations which cannot be
476 * executed from within an interrupt context.
478 static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev)
480 struct soc_pcmcia_socket *skt = dev;
482 debug(skt, 3, "servicing IRQ %d\n", irq);
484 soc_common_check_status(skt);
491 * Implements the get_status() operation for the in-kernel PCMCIA
492 * service (formerly SS_GetStatus in Card Services). Essentially just
493 * fills in bits in `status' according to internal driver state or
494 * the value of the voltage detect chipselect register.
496 * As a debugging note, during card startup, the PCMCIA core issues
497 * three set_socket() commands in a row the first with RESET deasserted,
498 * the second with RESET asserted, and the last with RESET deasserted
499 * again. Following the third set_socket(), a get_status() command will
500 * be issued. The kernel is looking for the SS_READY flag (see
501 * setup_socket(), reset_socket(), and unreset_socket() in cs.c).
506 soc_common_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status)
508 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
510 skt->status = soc_common_pcmcia_skt_state(skt);
511 *status = skt->status;
518 * Implements the set_socket() operation for the in-kernel PCMCIA
519 * service (formerly SS_SetSocket in Card Services). We more or
520 * less punt all of this work and let the kernel handle the details
521 * of power configuration, reset, &c. We also record the value of
522 * `state' in order to regurgitate it to the PCMCIA core later.
524 static int soc_common_pcmcia_set_socket(
525 struct pcmcia_socket *sock, socket_state_t *state)
527 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
529 debug(skt, 2, "mask: %s%s%s%s%s%s flags: %s%s%s%s%s%s Vcc %d Vpp %d irq %d\n",
530 (state->csc_mask == 0) ? "<NONE> " : "",
531 (state->csc_mask & SS_DETECT) ? "DETECT " : "",
532 (state->csc_mask & SS_READY) ? "READY " : "",
533 (state->csc_mask & SS_BATDEAD) ? "BATDEAD " : "",
534 (state->csc_mask & SS_BATWARN) ? "BATWARN " : "",
535 (state->csc_mask & SS_STSCHG) ? "STSCHG " : "",
536 (state->flags == 0) ? "<NONE> " : "",
537 (state->flags & SS_PWR_AUTO) ? "PWR_AUTO " : "",
538 (state->flags & SS_IOCARD) ? "IOCARD " : "",
539 (state->flags & SS_RESET) ? "RESET " : "",
540 (state->flags & SS_SPKR_ENA) ? "SPKR_ENA " : "",
541 (state->flags & SS_OUTPUT_ENA) ? "OUTPUT_ENA " : "",
542 state->Vcc, state->Vpp, state->io_irq);
544 return soc_common_pcmcia_config_skt(skt, state);
549 * Implements the set_io_map() operation for the in-kernel PCMCIA
550 * service (formerly SS_SetIOMap in Card Services). We configure
551 * the map speed as requested, but override the address ranges
552 * supplied by Card Services.
554 * Returns: 0 on success, -1 on error
556 static int soc_common_pcmcia_set_io_map(
557 struct pcmcia_socket *sock, struct pccard_io_map *map)
559 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
560 unsigned short speed = map->speed;
562 debug(skt, 2, "map %u speed %u start 0x%08llx stop 0x%08llx\n",
563 map->map, map->speed, (unsigned long long)map->start,
564 (unsigned long long)map->stop);
565 debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
566 (map->flags == 0) ? "<NONE>" : "",
567 (map->flags & MAP_ACTIVE) ? "ACTIVE " : "",
568 (map->flags & MAP_16BIT) ? "16BIT " : "",
569 (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "",
570 (map->flags & MAP_0WS) ? "0WS " : "",
571 (map->flags & MAP_WRPROT) ? "WRPROT " : "",
572 (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : "",
573 (map->flags & MAP_PREFETCH) ? "PREFETCH " : "");
575 if (map->map >= MAX_IO_WIN) {
576 printk(KERN_ERR "%s(): map (%d) out of range\n", __func__,
581 if (map->flags & MAP_ACTIVE) {
583 speed = SOC_PCMCIA_IO_ACCESS;
588 skt->spd_io[map->map] = speed;
589 skt->ops->set_timing(skt);
592 map->stop = PAGE_SIZE-1;
594 map->stop -= map->start;
595 map->stop += skt->socket.io_offset;
596 map->start = skt->socket.io_offset;
603 * Implements the set_mem_map() operation for the in-kernel PCMCIA
604 * service (formerly SS_SetMemMap in Card Services). We configure
605 * the map speed as requested, but override the address ranges
606 * supplied by Card Services.
608 * Returns: 0 on success, -ERRNO on error
610 static int soc_common_pcmcia_set_mem_map(
611 struct pcmcia_socket *sock, struct pccard_mem_map *map)
613 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
614 struct resource *res;
615 unsigned short speed = map->speed;
617 debug(skt, 2, "map %u speed %u card_start %08x\n",
618 map->map, map->speed, map->card_start);
619 debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
620 (map->flags == 0) ? "<NONE>" : "",
621 (map->flags & MAP_ACTIVE) ? "ACTIVE " : "",
622 (map->flags & MAP_16BIT) ? "16BIT " : "",
623 (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "",
624 (map->flags & MAP_0WS) ? "0WS " : "",
625 (map->flags & MAP_WRPROT) ? "WRPROT " : "",
626 (map->flags & MAP_ATTRIB) ? "ATTRIB " : "",
627 (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : "");
629 if (map->map >= MAX_WIN)
632 if (map->flags & MAP_ACTIVE) {
639 if (map->flags & MAP_ATTRIB) {
640 res = &skt->res_attr;
641 skt->spd_attr[map->map] = speed;
642 skt->spd_mem[map->map] = 0;
645 skt->spd_attr[map->map] = 0;
646 skt->spd_mem[map->map] = speed;
649 skt->ops->set_timing(skt);
651 map->static_start = res->start + map->card_start;
661 static struct bittbl status_bits[] = {
662 { SS_WRPROT, "SS_WRPROT" },
663 { SS_BATDEAD, "SS_BATDEAD" },
664 { SS_BATWARN, "SS_BATWARN" },
665 { SS_READY, "SS_READY" },
666 { SS_DETECT, "SS_DETECT" },
667 { SS_POWERON, "SS_POWERON" },
668 { SS_STSCHG, "SS_STSCHG" },
669 { SS_3VCARD, "SS_3VCARD" },
670 { SS_XVCARD, "SS_XVCARD" },
673 static struct bittbl conf_bits[] = {
674 { SS_PWR_AUTO, "SS_PWR_AUTO" },
675 { SS_IOCARD, "SS_IOCARD" },
676 { SS_RESET, "SS_RESET" },
677 { SS_DMA_MODE, "SS_DMA_MODE" },
678 { SS_SPKR_ENA, "SS_SPKR_ENA" },
679 { SS_OUTPUT_ENA, "SS_OUTPUT_ENA" },
682 static void dump_bits(char **p, const char *prefix,
683 unsigned int val, struct bittbl *bits, int sz)
688 b += sprintf(b, "%-9s:", prefix);
689 for (i = 0; i < sz; i++)
690 if (val & bits[i].mask)
691 b += sprintf(b, " %s", bits[i].name);
697 * Implements the /sys/class/pcmcia_socket/??/status file.
699 * Returns: the number of characters added to the buffer
701 static ssize_t show_status(
702 struct device *dev, struct device_attribute *attr, char *buf)
704 struct soc_pcmcia_socket *skt =
705 container_of(dev, struct soc_pcmcia_socket, socket.dev);
708 p += sprintf(p, "slot : %d\n", skt->nr);
710 dump_bits(&p, "status", skt->status,
711 status_bits, ARRAY_SIZE(status_bits));
712 dump_bits(&p, "csc_mask", skt->cs_state.csc_mask,
713 status_bits, ARRAY_SIZE(status_bits));
714 dump_bits(&p, "cs_flags", skt->cs_state.flags,
715 conf_bits, ARRAY_SIZE(conf_bits));
717 p += sprintf(p, "Vcc : %d\n", skt->cs_state.Vcc);
718 p += sprintf(p, "Vpp : %d\n", skt->cs_state.Vpp);
719 p += sprintf(p, "IRQ : %d (%d)\n", skt->cs_state.io_irq,
720 skt->socket.pci_irq);
721 if (skt->ops->show_timing)
722 p += skt->ops->show_timing(skt, p);
726 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
729 static struct pccard_operations soc_common_pcmcia_operations = {
730 .init = soc_common_pcmcia_sock_init,
731 .suspend = soc_common_pcmcia_suspend,
732 .get_status = soc_common_pcmcia_get_status,
733 .set_socket = soc_common_pcmcia_set_socket,
734 .set_io_map = soc_common_pcmcia_set_io_map,
735 .set_mem_map = soc_common_pcmcia_set_mem_map,
739 #ifdef CONFIG_CPU_FREQ
740 static int soc_common_pcmcia_cpufreq_nb(struct notifier_block *nb,
741 unsigned long val, void *data)
743 struct soc_pcmcia_socket *skt = container_of(nb, struct soc_pcmcia_socket, cpufreq_nb);
744 struct cpufreq_freqs *freqs = data;
746 return skt->ops->frequency_change(skt, val, freqs);
750 void soc_pcmcia_init_one(struct soc_pcmcia_socket *skt,
751 const struct pcmcia_low_level *ops, struct device *dev)
756 skt->socket.owner = ops->owner;
757 skt->socket.dev.parent = dev;
758 skt->socket.pci_irq = NO_IRQ;
760 for (i = 0; i < ARRAY_SIZE(skt->stat); i++)
761 skt->stat[i].gpio = -EINVAL;
763 EXPORT_SYMBOL(soc_pcmcia_init_one);
765 void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt)
767 del_timer_sync(&skt->poll_timer);
769 pcmcia_unregister_socket(&skt->socket);
771 #ifdef CONFIG_CPU_FREQ
772 if (skt->ops->frequency_change)
773 cpufreq_unregister_notifier(&skt->cpufreq_nb,
774 CPUFREQ_TRANSITION_NOTIFIER);
777 soc_pcmcia_hw_shutdown(skt);
779 /* should not be required; violates some lowlevel drivers */
780 soc_common_pcmcia_config_skt(skt, &dead_socket);
782 iounmap(skt->virt_io);
784 release_resource(&skt->res_attr);
785 release_resource(&skt->res_mem);
786 release_resource(&skt->res_io);
787 release_resource(&skt->res_skt);
789 EXPORT_SYMBOL(soc_pcmcia_remove_one);
791 int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt)
795 skt->cs_state = dead_socket;
797 setup_timer(&skt->poll_timer, soc_common_pcmcia_poll_event,
799 skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD;
801 ret = request_resource(&iomem_resource, &skt->res_skt);
805 ret = request_resource(&skt->res_skt, &skt->res_io);
809 ret = request_resource(&skt->res_skt, &skt->res_mem);
813 ret = request_resource(&skt->res_skt, &skt->res_attr);
817 skt->virt_io = ioremap(skt->res_io.start, 0x10000);
818 if (skt->virt_io == NULL) {
824 * We initialize default socket timing here, because
825 * we are not guaranteed to see a SetIOMap operation at
828 skt->ops->set_timing(skt);
830 ret = soc_pcmcia_hw_init(skt);
834 skt->socket.ops = &soc_common_pcmcia_operations;
835 skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD;
836 skt->socket.resource_ops = &pccard_static_ops;
837 skt->socket.irq_mask = 0;
838 skt->socket.map_size = PAGE_SIZE;
839 skt->socket.io_offset = (unsigned long)skt->virt_io;
841 skt->status = soc_common_pcmcia_skt_state(skt);
843 #ifdef CONFIG_CPU_FREQ
844 if (skt->ops->frequency_change) {
845 skt->cpufreq_nb.notifier_call = soc_common_pcmcia_cpufreq_nb;
847 ret = cpufreq_register_notifier(&skt->cpufreq_nb,
848 CPUFREQ_TRANSITION_NOTIFIER);
850 dev_err(skt->socket.dev.parent,
851 "unable to register CPU frequency change notifier for PCMCIA (%d)\n",
856 ret = pcmcia_register_socket(&skt->socket);
860 ret = device_create_file(&skt->socket.dev, &dev_attr_status);
867 del_timer_sync(&skt->poll_timer);
868 pcmcia_unregister_socket(&skt->socket);
871 soc_pcmcia_hw_shutdown(skt);
873 iounmap(skt->virt_io);
875 release_resource(&skt->res_attr);
877 release_resource(&skt->res_mem);
879 release_resource(&skt->res_io);
881 release_resource(&skt->res_skt);
886 EXPORT_SYMBOL(soc_pcmcia_add_one);
888 MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>");
889 MODULE_DESCRIPTION("Linux PCMCIA Card Services: Common SoC support");
890 MODULE_LICENSE("Dual MPL/GPL");