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 ret = clk_prepare_enable(skt->clk);
198 if (skt->ops->hw_init) {
199 ret = skt->ops->hw_init(skt);
201 clk_disable_unprepare(skt->clk);
206 for (i = 0; i < ARRAY_SIZE(skt->stat); i++) {
207 if (gpio_is_valid(skt->stat[i].gpio)) {
208 unsigned long flags = GPIOF_IN;
210 /* CD is active low by default */
211 if (i == SOC_STAT_CD)
212 flags |= GPIOF_ACTIVE_LOW;
214 ret = devm_gpio_request_one(skt->socket.dev.parent,
215 skt->stat[i].gpio, flags,
218 __soc_pcmcia_hw_shutdown(skt, i);
222 skt->stat[i].desc = gpio_to_desc(skt->stat[i].gpio);
225 if (i < SOC_STAT_VS1 && skt->stat[i].desc) {
226 int irq = gpiod_to_irq(skt->stat[i].desc);
229 if (i == SOC_STAT_RDY)
230 skt->socket.pci_irq = irq;
232 skt->stat[i].irq = irq;
236 if (skt->stat[i].irq) {
237 ret = request_irq(skt->stat[i].irq,
238 soc_common_pcmcia_interrupt,
240 skt->stat[i].name, skt);
242 __soc_pcmcia_hw_shutdown(skt, i);
251 static void soc_pcmcia_hw_enable(struct soc_pcmcia_socket *skt)
255 for (i = 0; i < ARRAY_SIZE(skt->stat); i++)
256 if (skt->stat[i].irq) {
257 irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_EDGE_RISING);
258 irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_EDGE_BOTH);
262 static void soc_pcmcia_hw_disable(struct soc_pcmcia_socket *skt)
266 for (i = 0; i < ARRAY_SIZE(skt->stat); i++)
267 if (skt->stat[i].irq)
268 irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_NONE);
272 * The CF 3.0 specification says that cards tie VS1 to ground and leave
273 * VS2 open. Many implementations do not wire up the VS signals, so we
274 * provide hard-coded values as per the CF 3.0 spec.
276 void soc_common_cf_socket_state(struct soc_pcmcia_socket *skt,
277 struct pcmcia_state *state)
281 EXPORT_SYMBOL_GPL(soc_common_cf_socket_state);
283 static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt)
285 struct pcmcia_state state;
288 memset(&state, 0, sizeof(struct pcmcia_state));
290 /* Make battery voltage state report 'good' */
294 if (skt->stat[SOC_STAT_CD].desc)
295 state.detect = !!gpiod_get_value(skt->stat[SOC_STAT_CD].desc);
296 if (skt->stat[SOC_STAT_RDY].desc)
297 state.ready = !!gpiod_get_value(skt->stat[SOC_STAT_RDY].desc);
298 if (skt->stat[SOC_STAT_BVD1].desc)
299 state.bvd1 = !!gpiod_get_value(skt->stat[SOC_STAT_BVD1].desc);
300 if (skt->stat[SOC_STAT_BVD2].desc)
301 state.bvd2 = !!gpiod_get_value(skt->stat[SOC_STAT_BVD2].desc);
302 if (skt->stat[SOC_STAT_VS1].desc)
303 state.vs_3v = !!gpiod_get_value(skt->stat[SOC_STAT_VS1].desc);
304 if (skt->stat[SOC_STAT_VS2].desc)
305 state.vs_Xv = !!gpiod_get_value(skt->stat[SOC_STAT_VS2].desc);
307 skt->ops->socket_state(skt, &state);
309 stat = state.detect ? SS_DETECT : 0;
310 stat |= state.ready ? SS_READY : 0;
311 stat |= state.wrprot ? SS_WRPROT : 0;
312 stat |= state.vs_3v ? SS_3VCARD : 0;
313 stat |= state.vs_Xv ? SS_XVCARD : 0;
315 /* The power status of individual sockets is not available
316 * explicitly from the hardware, so we just remember the state
317 * and regurgitate it upon request:
319 stat |= skt->cs_state.Vcc ? SS_POWERON : 0;
321 if (skt->cs_state.flags & SS_IOCARD)
322 stat |= state.bvd1 ? 0 : SS_STSCHG;
326 else if (state.bvd2 == 0)
333 * soc_common_pcmcia_config_skt
334 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
336 * Convert PCMCIA socket state to our socket configure structure.
338 static int soc_common_pcmcia_config_skt(
339 struct soc_pcmcia_socket *skt, socket_state_t *state)
343 ret = skt->ops->configure_socket(skt, state);
345 pr_err("soc_common_pcmcia: unable to configure socket %d\n",
347 /* restore the previous state */
348 WARN_ON(skt->ops->configure_socket(skt, &skt->cs_state));
353 struct gpio_desc *descs[2];
354 DECLARE_BITMAP(values, 2);
357 if (skt->gpio_reset) {
358 descs[n] = skt->gpio_reset;
359 __assign_bit(n++, values, state->flags & SS_RESET);
361 if (skt->gpio_bus_enable) {
362 descs[n] = skt->gpio_bus_enable;
363 __assign_bit(n++, values, state->flags & SS_OUTPUT_ENA);
367 gpiod_set_array_value_cansleep(n, descs, NULL, values);
370 * This really needs a better solution. The IRQ
371 * may or may not be claimed by the driver.
373 if (skt->irq_state != 1 && state->io_irq) {
375 irq_set_irq_type(skt->socket.pci_irq,
376 IRQ_TYPE_EDGE_FALLING);
377 } else if (skt->irq_state == 1 && state->io_irq == 0) {
379 irq_set_irq_type(skt->socket.pci_irq, IRQ_TYPE_NONE);
382 skt->cs_state = *state;
388 /* soc_common_pcmcia_sock_init()
389 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
391 * (Re-)Initialise the socket, turning on status interrupts
392 * and PCMCIA bus. This must wait for power to stabilise
393 * so that the card status signals report correctly.
397 static int soc_common_pcmcia_sock_init(struct pcmcia_socket *sock)
399 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
401 debug(skt, 2, "initializing socket\n");
402 if (skt->ops->socket_init)
403 skt->ops->socket_init(skt);
404 soc_pcmcia_hw_enable(skt);
410 * soc_common_pcmcia_suspend()
411 * ^^^^^^^^^^^^^^^^^^^^^^^^^^^
413 * Remove power on the socket, disable IRQs from the card.
414 * Turn off status interrupts, and disable the PCMCIA bus.
418 static int soc_common_pcmcia_suspend(struct pcmcia_socket *sock)
420 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
422 debug(skt, 2, "suspending socket\n");
424 soc_pcmcia_hw_disable(skt);
425 if (skt->ops->socket_suspend)
426 skt->ops->socket_suspend(skt);
431 static DEFINE_SPINLOCK(status_lock);
433 static void soc_common_check_status(struct soc_pcmcia_socket *skt)
437 debug(skt, 4, "entering PCMCIA monitoring thread\n");
443 status = soc_common_pcmcia_skt_state(skt);
445 spin_lock_irqsave(&status_lock, flags);
446 events = (status ^ skt->status) & skt->cs_state.csc_mask;
447 skt->status = status;
448 spin_unlock_irqrestore(&status_lock, flags);
450 debug(skt, 4, "events: %s%s%s%s%s%s\n",
451 events == 0 ? "<NONE>" : "",
452 events & SS_DETECT ? "DETECT " : "",
453 events & SS_READY ? "READY " : "",
454 events & SS_BATDEAD ? "BATDEAD " : "",
455 events & SS_BATWARN ? "BATWARN " : "",
456 events & SS_STSCHG ? "STSCHG " : "");
459 pcmcia_parse_events(&skt->socket, events);
463 /* Let's poll for events in addition to IRQs since IRQ only is unreliable... */
464 static void soc_common_pcmcia_poll_event(struct timer_list *t)
466 struct soc_pcmcia_socket *skt = from_timer(skt, t, poll_timer);
467 debug(skt, 4, "polling for events\n");
469 mod_timer(&skt->poll_timer, jiffies + SOC_PCMCIA_POLL_PERIOD);
471 soc_common_check_status(skt);
476 * Service routine for socket driver interrupts (requested by the
477 * low-level PCMCIA init() operation via soc_common_pcmcia_thread()).
478 * The actual interrupt-servicing work is performed by
479 * soc_common_pcmcia_thread(), largely because the Card Services event-
480 * handling code performs scheduling operations which cannot be
481 * executed from within an interrupt context.
483 static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev)
485 struct soc_pcmcia_socket *skt = dev;
487 debug(skt, 3, "servicing IRQ %d\n", irq);
489 soc_common_check_status(skt);
496 * Implements the get_status() operation for the in-kernel PCMCIA
497 * service (formerly SS_GetStatus in Card Services). Essentially just
498 * fills in bits in `status' according to internal driver state or
499 * the value of the voltage detect chipselect register.
501 * As a debugging note, during card startup, the PCMCIA core issues
502 * three set_socket() commands in a row the first with RESET deasserted,
503 * the second with RESET asserted, and the last with RESET deasserted
504 * again. Following the third set_socket(), a get_status() command will
505 * be issued. The kernel is looking for the SS_READY flag (see
506 * setup_socket(), reset_socket(), and unreset_socket() in cs.c).
511 soc_common_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status)
513 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
515 skt->status = soc_common_pcmcia_skt_state(skt);
516 *status = skt->status;
523 * Implements the set_socket() operation for the in-kernel PCMCIA
524 * service (formerly SS_SetSocket in Card Services). We more or
525 * less punt all of this work and let the kernel handle the details
526 * of power configuration, reset, &c. We also record the value of
527 * `state' in order to regurgitate it to the PCMCIA core later.
529 static int soc_common_pcmcia_set_socket(
530 struct pcmcia_socket *sock, socket_state_t *state)
532 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
534 debug(skt, 2, "mask: %s%s%s%s%s%s flags: %s%s%s%s%s%s Vcc %d Vpp %d irq %d\n",
535 (state->csc_mask == 0) ? "<NONE> " : "",
536 (state->csc_mask & SS_DETECT) ? "DETECT " : "",
537 (state->csc_mask & SS_READY) ? "READY " : "",
538 (state->csc_mask & SS_BATDEAD) ? "BATDEAD " : "",
539 (state->csc_mask & SS_BATWARN) ? "BATWARN " : "",
540 (state->csc_mask & SS_STSCHG) ? "STSCHG " : "",
541 (state->flags == 0) ? "<NONE> " : "",
542 (state->flags & SS_PWR_AUTO) ? "PWR_AUTO " : "",
543 (state->flags & SS_IOCARD) ? "IOCARD " : "",
544 (state->flags & SS_RESET) ? "RESET " : "",
545 (state->flags & SS_SPKR_ENA) ? "SPKR_ENA " : "",
546 (state->flags & SS_OUTPUT_ENA) ? "OUTPUT_ENA " : "",
547 state->Vcc, state->Vpp, state->io_irq);
549 return soc_common_pcmcia_config_skt(skt, state);
554 * Implements the set_io_map() operation for the in-kernel PCMCIA
555 * service (formerly SS_SetIOMap in Card Services). We configure
556 * the map speed as requested, but override the address ranges
557 * supplied by Card Services.
559 * Returns: 0 on success, -1 on error
561 static int soc_common_pcmcia_set_io_map(
562 struct pcmcia_socket *sock, struct pccard_io_map *map)
564 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
565 unsigned short speed = map->speed;
567 debug(skt, 2, "map %u speed %u start 0x%08llx stop 0x%08llx\n",
568 map->map, map->speed, (unsigned long long)map->start,
569 (unsigned long long)map->stop);
570 debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
571 (map->flags == 0) ? "<NONE>" : "",
572 (map->flags & MAP_ACTIVE) ? "ACTIVE " : "",
573 (map->flags & MAP_16BIT) ? "16BIT " : "",
574 (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "",
575 (map->flags & MAP_0WS) ? "0WS " : "",
576 (map->flags & MAP_WRPROT) ? "WRPROT " : "",
577 (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : "",
578 (map->flags & MAP_PREFETCH) ? "PREFETCH " : "");
580 if (map->map >= MAX_IO_WIN) {
581 printk(KERN_ERR "%s(): map (%d) out of range\n", __func__,
586 if (map->flags & MAP_ACTIVE) {
588 speed = SOC_PCMCIA_IO_ACCESS;
593 skt->spd_io[map->map] = speed;
594 skt->ops->set_timing(skt);
597 map->stop = PAGE_SIZE-1;
599 map->stop -= map->start;
600 map->stop += skt->socket.io_offset;
601 map->start = skt->socket.io_offset;
608 * Implements the set_mem_map() operation for the in-kernel PCMCIA
609 * service (formerly SS_SetMemMap in Card Services). We configure
610 * the map speed as requested, but override the address ranges
611 * supplied by Card Services.
613 * Returns: 0 on success, -ERRNO on error
615 static int soc_common_pcmcia_set_mem_map(
616 struct pcmcia_socket *sock, struct pccard_mem_map *map)
618 struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock);
619 struct resource *res;
620 unsigned short speed = map->speed;
622 debug(skt, 2, "map %u speed %u card_start %08x\n",
623 map->map, map->speed, map->card_start);
624 debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n",
625 (map->flags == 0) ? "<NONE>" : "",
626 (map->flags & MAP_ACTIVE) ? "ACTIVE " : "",
627 (map->flags & MAP_16BIT) ? "16BIT " : "",
628 (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "",
629 (map->flags & MAP_0WS) ? "0WS " : "",
630 (map->flags & MAP_WRPROT) ? "WRPROT " : "",
631 (map->flags & MAP_ATTRIB) ? "ATTRIB " : "",
632 (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : "");
634 if (map->map >= MAX_WIN)
637 if (map->flags & MAP_ACTIVE) {
644 if (map->flags & MAP_ATTRIB) {
645 res = &skt->res_attr;
646 skt->spd_attr[map->map] = speed;
647 skt->spd_mem[map->map] = 0;
650 skt->spd_attr[map->map] = 0;
651 skt->spd_mem[map->map] = speed;
654 skt->ops->set_timing(skt);
656 map->static_start = res->start + map->card_start;
666 static struct bittbl status_bits[] = {
667 { SS_WRPROT, "SS_WRPROT" },
668 { SS_BATDEAD, "SS_BATDEAD" },
669 { SS_BATWARN, "SS_BATWARN" },
670 { SS_READY, "SS_READY" },
671 { SS_DETECT, "SS_DETECT" },
672 { SS_POWERON, "SS_POWERON" },
673 { SS_STSCHG, "SS_STSCHG" },
674 { SS_3VCARD, "SS_3VCARD" },
675 { SS_XVCARD, "SS_XVCARD" },
678 static struct bittbl conf_bits[] = {
679 { SS_PWR_AUTO, "SS_PWR_AUTO" },
680 { SS_IOCARD, "SS_IOCARD" },
681 { SS_RESET, "SS_RESET" },
682 { SS_DMA_MODE, "SS_DMA_MODE" },
683 { SS_SPKR_ENA, "SS_SPKR_ENA" },
684 { SS_OUTPUT_ENA, "SS_OUTPUT_ENA" },
687 static void dump_bits(char **p, const char *prefix,
688 unsigned int val, struct bittbl *bits, int sz)
693 b += sprintf(b, "%-9s:", prefix);
694 for (i = 0; i < sz; i++)
695 if (val & bits[i].mask)
696 b += sprintf(b, " %s", bits[i].name);
702 * Implements the /sys/class/pcmcia_socket/??/status file.
704 * Returns: the number of characters added to the buffer
706 static ssize_t show_status(
707 struct device *dev, struct device_attribute *attr, char *buf)
709 struct soc_pcmcia_socket *skt =
710 container_of(dev, struct soc_pcmcia_socket, socket.dev);
713 p += sprintf(p, "slot : %d\n", skt->nr);
715 dump_bits(&p, "status", skt->status,
716 status_bits, ARRAY_SIZE(status_bits));
717 dump_bits(&p, "csc_mask", skt->cs_state.csc_mask,
718 status_bits, ARRAY_SIZE(status_bits));
719 dump_bits(&p, "cs_flags", skt->cs_state.flags,
720 conf_bits, ARRAY_SIZE(conf_bits));
722 p += sprintf(p, "Vcc : %d\n", skt->cs_state.Vcc);
723 p += sprintf(p, "Vpp : %d\n", skt->cs_state.Vpp);
724 p += sprintf(p, "IRQ : %d (%d)\n", skt->cs_state.io_irq,
725 skt->socket.pci_irq);
726 if (skt->ops->show_timing)
727 p += skt->ops->show_timing(skt, p);
731 static DEVICE_ATTR(status, S_IRUGO, show_status, NULL);
734 static struct pccard_operations soc_common_pcmcia_operations = {
735 .init = soc_common_pcmcia_sock_init,
736 .suspend = soc_common_pcmcia_suspend,
737 .get_status = soc_common_pcmcia_get_status,
738 .set_socket = soc_common_pcmcia_set_socket,
739 .set_io_map = soc_common_pcmcia_set_io_map,
740 .set_mem_map = soc_common_pcmcia_set_mem_map,
744 #ifdef CONFIG_CPU_FREQ
745 static int soc_common_pcmcia_cpufreq_nb(struct notifier_block *nb,
746 unsigned long val, void *data)
748 struct soc_pcmcia_socket *skt = container_of(nb, struct soc_pcmcia_socket, cpufreq_nb);
749 struct cpufreq_freqs *freqs = data;
751 return skt->ops->frequency_change(skt, val, freqs);
755 void soc_pcmcia_init_one(struct soc_pcmcia_socket *skt,
756 const struct pcmcia_low_level *ops, struct device *dev)
761 skt->socket.owner = ops->owner;
762 skt->socket.dev.parent = dev;
763 skt->socket.pci_irq = NO_IRQ;
765 for (i = 0; i < ARRAY_SIZE(skt->stat); i++)
766 skt->stat[i].gpio = -EINVAL;
768 EXPORT_SYMBOL(soc_pcmcia_init_one);
770 void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt)
772 del_timer_sync(&skt->poll_timer);
774 pcmcia_unregister_socket(&skt->socket);
776 #ifdef CONFIG_CPU_FREQ
777 if (skt->ops->frequency_change)
778 cpufreq_unregister_notifier(&skt->cpufreq_nb,
779 CPUFREQ_TRANSITION_NOTIFIER);
782 soc_pcmcia_hw_shutdown(skt);
784 /* should not be required; violates some lowlevel drivers */
785 soc_common_pcmcia_config_skt(skt, &dead_socket);
787 iounmap(skt->virt_io);
789 release_resource(&skt->res_attr);
790 release_resource(&skt->res_mem);
791 release_resource(&skt->res_io);
792 release_resource(&skt->res_skt);
794 EXPORT_SYMBOL(soc_pcmcia_remove_one);
796 int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt)
800 skt->cs_state = dead_socket;
802 timer_setup(&skt->poll_timer, soc_common_pcmcia_poll_event, 0);
803 skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD;
805 ret = request_resource(&iomem_resource, &skt->res_skt);
809 ret = request_resource(&skt->res_skt, &skt->res_io);
813 ret = request_resource(&skt->res_skt, &skt->res_mem);
817 ret = request_resource(&skt->res_skt, &skt->res_attr);
821 skt->virt_io = ioremap(skt->res_io.start, 0x10000);
822 if (skt->virt_io == NULL) {
828 * We initialize default socket timing here, because
829 * we are not guaranteed to see a SetIOMap operation at
832 skt->ops->set_timing(skt);
834 ret = soc_pcmcia_hw_init(skt);
838 skt->socket.ops = &soc_common_pcmcia_operations;
839 skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD;
840 skt->socket.resource_ops = &pccard_static_ops;
841 skt->socket.irq_mask = 0;
842 skt->socket.map_size = PAGE_SIZE;
843 skt->socket.io_offset = (unsigned long)skt->virt_io;
845 skt->status = soc_common_pcmcia_skt_state(skt);
847 #ifdef CONFIG_CPU_FREQ
848 if (skt->ops->frequency_change) {
849 skt->cpufreq_nb.notifier_call = soc_common_pcmcia_cpufreq_nb;
851 ret = cpufreq_register_notifier(&skt->cpufreq_nb,
852 CPUFREQ_TRANSITION_NOTIFIER);
854 dev_err(skt->socket.dev.parent,
855 "unable to register CPU frequency change notifier for PCMCIA (%d)\n",
860 ret = pcmcia_register_socket(&skt->socket);
864 ret = device_create_file(&skt->socket.dev, &dev_attr_status);
871 del_timer_sync(&skt->poll_timer);
872 pcmcia_unregister_socket(&skt->socket);
875 soc_pcmcia_hw_shutdown(skt);
877 iounmap(skt->virt_io);
879 release_resource(&skt->res_attr);
881 release_resource(&skt->res_mem);
883 release_resource(&skt->res_io);
885 release_resource(&skt->res_skt);
890 EXPORT_SYMBOL(soc_pcmcia_add_one);
892 MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>");
893 MODULE_DESCRIPTION("Linux PCMCIA Card Services: Common SoC support");
894 MODULE_LICENSE("Dual MPL/GPL");