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1da177e4 LT |
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 | ||
1da177e4 LT |
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> | |
23d077e2 | 40 | #include <linux/mutex.h> |
1da177e4 | 41 | #include <linux/interrupt.h> |
ff632054 | 42 | #include <linux/irq.h> |
1da177e4 LT |
43 | #include <linux/spinlock.h> |
44 | #include <linux/cpufreq.h> | |
45 | ||
a09e64fb | 46 | #include <mach/hardware.h> |
1da177e4 | 47 | #include <asm/io.h> |
1da177e4 LT |
48 | #include <asm/system.h> |
49 | ||
50 | #include "soc_common.h" | |
51 | ||
7d16b658 | 52 | #ifdef CONFIG_PCMCIA_DEBUG |
1da177e4 LT |
53 | |
54 | static int pc_debug; | |
55 | module_param(pc_debug, int, 0644); | |
56 | ||
57 | void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func, | |
58 | int lvl, const char *fmt, ...) | |
59 | { | |
60 | va_list args; | |
61 | if (pc_debug > lvl) { | |
62 | printk(KERN_DEBUG "skt%u: %s: ", skt->nr, func); | |
63 | va_start(args, fmt); | |
4846d017 | 64 | vprintk(fmt, args); |
1da177e4 LT |
65 | va_end(args); |
66 | } | |
67 | } | |
68 | ||
69 | #endif | |
70 | ||
71 | #define to_soc_pcmcia_socket(x) container_of(x, struct soc_pcmcia_socket, socket) | |
72 | ||
73 | static unsigned short | |
74 | calc_speed(unsigned short *spds, int num, unsigned short dflt) | |
75 | { | |
76 | unsigned short speed = 0; | |
77 | int i; | |
78 | ||
79 | for (i = 0; i < num; i++) | |
80 | if (speed < spds[i]) | |
81 | speed = spds[i]; | |
82 | if (speed == 0) | |
83 | speed = dflt; | |
84 | ||
85 | return speed; | |
86 | } | |
87 | ||
88 | void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *skt, struct soc_pcmcia_timing *timing) | |
89 | { | |
90 | timing->io = calc_speed(skt->spd_io, MAX_IO_WIN, SOC_PCMCIA_IO_ACCESS); | |
91 | timing->mem = calc_speed(skt->spd_mem, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS); | |
92 | timing->attr = calc_speed(skt->spd_attr, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS); | |
93 | } | |
94 | EXPORT_SYMBOL(soc_common_pcmcia_get_timing); | |
95 | ||
96 | static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt) | |
97 | { | |
98 | struct pcmcia_state state; | |
99 | unsigned int stat; | |
100 | ||
101 | memset(&state, 0, sizeof(struct pcmcia_state)); | |
102 | ||
103 | skt->ops->socket_state(skt, &state); | |
104 | ||
105 | stat = state.detect ? SS_DETECT : 0; | |
106 | stat |= state.ready ? SS_READY : 0; | |
107 | stat |= state.wrprot ? SS_WRPROT : 0; | |
108 | stat |= state.vs_3v ? SS_3VCARD : 0; | |
109 | stat |= state.vs_Xv ? SS_XVCARD : 0; | |
110 | ||
111 | /* The power status of individual sockets is not available | |
112 | * explicitly from the hardware, so we just remember the state | |
113 | * and regurgitate it upon request: | |
114 | */ | |
115 | stat |= skt->cs_state.Vcc ? SS_POWERON : 0; | |
116 | ||
117 | if (skt->cs_state.flags & SS_IOCARD) | |
118 | stat |= state.bvd1 ? SS_STSCHG : 0; | |
119 | else { | |
120 | if (state.bvd1 == 0) | |
121 | stat |= SS_BATDEAD; | |
122 | else if (state.bvd2 == 0) | |
123 | stat |= SS_BATWARN; | |
124 | } | |
125 | return stat; | |
126 | } | |
127 | ||
128 | /* | |
129 | * soc_common_pcmcia_config_skt | |
130 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
131 | * | |
132 | * Convert PCMCIA socket state to our socket configure structure. | |
133 | */ | |
134 | static int | |
135 | soc_common_pcmcia_config_skt(struct soc_pcmcia_socket *skt, socket_state_t *state) | |
136 | { | |
137 | int ret; | |
138 | ||
139 | ret = skt->ops->configure_socket(skt, state); | |
140 | if (ret == 0) { | |
141 | /* | |
142 | * This really needs a better solution. The IRQ | |
143 | * may or may not be claimed by the driver. | |
144 | */ | |
145 | if (skt->irq_state != 1 && state->io_irq) { | |
146 | skt->irq_state = 1; | |
6cab4860 | 147 | set_irq_type(skt->irq, IRQ_TYPE_EDGE_FALLING); |
1da177e4 LT |
148 | } else if (skt->irq_state == 1 && state->io_irq == 0) { |
149 | skt->irq_state = 0; | |
6cab4860 | 150 | set_irq_type(skt->irq, IRQ_TYPE_NONE); |
1da177e4 LT |
151 | } |
152 | ||
153 | skt->cs_state = *state; | |
154 | } | |
155 | ||
156 | if (ret < 0) | |
157 | printk(KERN_ERR "soc_common_pcmcia: unable to configure " | |
158 | "socket %d\n", skt->nr); | |
159 | ||
160 | return ret; | |
161 | } | |
162 | ||
163 | /* soc_common_pcmcia_sock_init() | |
164 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
165 | * | |
166 | * (Re-)Initialise the socket, turning on status interrupts | |
167 | * and PCMCIA bus. This must wait for power to stabilise | |
168 | * so that the card status signals report correctly. | |
169 | * | |
170 | * Returns: 0 | |
171 | */ | |
172 | static int soc_common_pcmcia_sock_init(struct pcmcia_socket *sock) | |
173 | { | |
174 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
175 | ||
176 | debug(skt, 2, "initializing socket\n"); | |
177 | ||
178 | skt->ops->socket_init(skt); | |
179 | return 0; | |
180 | } | |
181 | ||
182 | ||
183 | /* | |
184 | * soc_common_pcmcia_suspend() | |
185 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
186 | * | |
187 | * Remove power on the socket, disable IRQs from the card. | |
188 | * Turn off status interrupts, and disable the PCMCIA bus. | |
189 | * | |
190 | * Returns: 0 | |
191 | */ | |
192 | static int soc_common_pcmcia_suspend(struct pcmcia_socket *sock) | |
193 | { | |
194 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
195 | ||
196 | debug(skt, 2, "suspending socket\n"); | |
197 | ||
198 | skt->ops->socket_suspend(skt); | |
199 | ||
200 | return 0; | |
201 | } | |
202 | ||
203 | static DEFINE_SPINLOCK(status_lock); | |
204 | ||
205 | static void soc_common_check_status(struct soc_pcmcia_socket *skt) | |
206 | { | |
207 | unsigned int events; | |
208 | ||
209 | debug(skt, 4, "entering PCMCIA monitoring thread\n"); | |
210 | ||
211 | do { | |
212 | unsigned int status; | |
213 | unsigned long flags; | |
214 | ||
215 | status = soc_common_pcmcia_skt_state(skt); | |
216 | ||
217 | spin_lock_irqsave(&status_lock, flags); | |
218 | events = (status ^ skt->status) & skt->cs_state.csc_mask; | |
219 | skt->status = status; | |
220 | spin_unlock_irqrestore(&status_lock, flags); | |
221 | ||
222 | debug(skt, 4, "events: %s%s%s%s%s%s\n", | |
223 | events == 0 ? "<NONE>" : "", | |
224 | events & SS_DETECT ? "DETECT " : "", | |
225 | events & SS_READY ? "READY " : "", | |
226 | events & SS_BATDEAD ? "BATDEAD " : "", | |
227 | events & SS_BATWARN ? "BATWARN " : "", | |
228 | events & SS_STSCHG ? "STSCHG " : ""); | |
229 | ||
230 | if (events) | |
231 | pcmcia_parse_events(&skt->socket, events); | |
232 | } while (events); | |
233 | } | |
234 | ||
235 | /* Let's poll for events in addition to IRQs since IRQ only is unreliable... */ | |
236 | static void soc_common_pcmcia_poll_event(unsigned long dummy) | |
237 | { | |
238 | struct soc_pcmcia_socket *skt = (struct soc_pcmcia_socket *)dummy; | |
239 | debug(skt, 4, "polling for events\n"); | |
240 | ||
241 | mod_timer(&skt->poll_timer, jiffies + SOC_PCMCIA_POLL_PERIOD); | |
242 | ||
243 | soc_common_check_status(skt); | |
244 | } | |
245 | ||
246 | ||
247 | /* | |
248 | * Service routine for socket driver interrupts (requested by the | |
249 | * low-level PCMCIA init() operation via soc_common_pcmcia_thread()). | |
250 | * The actual interrupt-servicing work is performed by | |
251 | * soc_common_pcmcia_thread(), largely because the Card Services event- | |
252 | * handling code performs scheduling operations which cannot be | |
253 | * executed from within an interrupt context. | |
254 | */ | |
7d12e780 | 255 | static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev) |
1da177e4 LT |
256 | { |
257 | struct soc_pcmcia_socket *skt = dev; | |
258 | ||
259 | debug(skt, 3, "servicing IRQ %d\n", irq); | |
260 | ||
261 | soc_common_check_status(skt); | |
262 | ||
263 | return IRQ_HANDLED; | |
264 | } | |
265 | ||
266 | ||
267 | /* | |
268 | * Implements the get_status() operation for the in-kernel PCMCIA | |
269 | * service (formerly SS_GetStatus in Card Services). Essentially just | |
270 | * fills in bits in `status' according to internal driver state or | |
271 | * the value of the voltage detect chipselect register. | |
272 | * | |
273 | * As a debugging note, during card startup, the PCMCIA core issues | |
274 | * three set_socket() commands in a row the first with RESET deasserted, | |
275 | * the second with RESET asserted, and the last with RESET deasserted | |
276 | * again. Following the third set_socket(), a get_status() command will | |
277 | * be issued. The kernel is looking for the SS_READY flag (see | |
278 | * setup_socket(), reset_socket(), and unreset_socket() in cs.c). | |
279 | * | |
280 | * Returns: 0 | |
281 | */ | |
282 | static int | |
283 | soc_common_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status) | |
284 | { | |
285 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
286 | ||
287 | skt->status = soc_common_pcmcia_skt_state(skt); | |
288 | *status = skt->status; | |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
293 | ||
1da177e4 LT |
294 | /* |
295 | * Implements the set_socket() operation for the in-kernel PCMCIA | |
296 | * service (formerly SS_SetSocket in Card Services). We more or | |
297 | * less punt all of this work and let the kernel handle the details | |
298 | * of power configuration, reset, &c. We also record the value of | |
299 | * `state' in order to regurgitate it to the PCMCIA core later. | |
1da177e4 LT |
300 | */ |
301 | static int | |
302 | soc_common_pcmcia_set_socket(struct pcmcia_socket *sock, socket_state_t *state) | |
303 | { | |
304 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
305 | ||
306 | debug(skt, 2, "mask: %s%s%s%s%s%sflags: %s%s%s%s%s%sVcc %d Vpp %d irq %d\n", | |
307 | (state->csc_mask==0)?"<NONE> ":"", | |
308 | (state->csc_mask&SS_DETECT)?"DETECT ":"", | |
309 | (state->csc_mask&SS_READY)?"READY ":"", | |
310 | (state->csc_mask&SS_BATDEAD)?"BATDEAD ":"", | |
311 | (state->csc_mask&SS_BATWARN)?"BATWARN ":"", | |
312 | (state->csc_mask&SS_STSCHG)?"STSCHG ":"", | |
313 | (state->flags==0)?"<NONE> ":"", | |
314 | (state->flags&SS_PWR_AUTO)?"PWR_AUTO ":"", | |
315 | (state->flags&SS_IOCARD)?"IOCARD ":"", | |
316 | (state->flags&SS_RESET)?"RESET ":"", | |
317 | (state->flags&SS_SPKR_ENA)?"SPKR_ENA ":"", | |
318 | (state->flags&SS_OUTPUT_ENA)?"OUTPUT_ENA ":"", | |
319 | state->Vcc, state->Vpp, state->io_irq); | |
320 | ||
321 | return soc_common_pcmcia_config_skt(skt, state); | |
322 | } | |
323 | ||
324 | ||
325 | /* | |
326 | * Implements the set_io_map() operation for the in-kernel PCMCIA | |
327 | * service (formerly SS_SetIOMap in Card Services). We configure | |
328 | * the map speed as requested, but override the address ranges | |
329 | * supplied by Card Services. | |
330 | * | |
331 | * Returns: 0 on success, -1 on error | |
332 | */ | |
333 | static int | |
334 | soc_common_pcmcia_set_io_map(struct pcmcia_socket *sock, struct pccard_io_map *map) | |
335 | { | |
336 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
337 | unsigned short speed = map->speed; | |
338 | ||
5f784336 WS |
339 | debug(skt, 2, "map %u speed %u start 0x%08llx stop 0x%08llx\n", |
340 | map->map, map->speed, (unsigned long long)map->start, | |
341 | (unsigned long long)map->stop); | |
1da177e4 LT |
342 | debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n", |
343 | (map->flags==0)?"<NONE>":"", | |
344 | (map->flags&MAP_ACTIVE)?"ACTIVE ":"", | |
345 | (map->flags&MAP_16BIT)?"16BIT ":"", | |
346 | (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"", | |
347 | (map->flags&MAP_0WS)?"0WS ":"", | |
348 | (map->flags&MAP_WRPROT)?"WRPROT ":"", | |
349 | (map->flags&MAP_USE_WAIT)?"USE_WAIT ":"", | |
350 | (map->flags&MAP_PREFETCH)?"PREFETCH ":""); | |
351 | ||
352 | if (map->map >= MAX_IO_WIN) { | |
2e11cb4c | 353 | printk(KERN_ERR "%s(): map (%d) out of range\n", __func__, |
1da177e4 LT |
354 | map->map); |
355 | return -1; | |
356 | } | |
357 | ||
358 | if (map->flags & MAP_ACTIVE) { | |
359 | if (speed == 0) | |
360 | speed = SOC_PCMCIA_IO_ACCESS; | |
361 | } else { | |
362 | speed = 0; | |
363 | } | |
364 | ||
365 | skt->spd_io[map->map] = speed; | |
366 | skt->ops->set_timing(skt); | |
367 | ||
368 | if (map->stop == 1) | |
369 | map->stop = PAGE_SIZE-1; | |
370 | ||
371 | map->stop -= map->start; | |
372 | map->stop += skt->socket.io_offset; | |
373 | map->start = skt->socket.io_offset; | |
374 | ||
375 | return 0; | |
376 | } | |
377 | ||
378 | ||
379 | /* | |
380 | * Implements the set_mem_map() operation for the in-kernel PCMCIA | |
381 | * service (formerly SS_SetMemMap in Card Services). We configure | |
382 | * the map speed as requested, but override the address ranges | |
383 | * supplied by Card Services. | |
384 | * | |
4846d017 | 385 | * Returns: 0 on success, -ERRNO on error |
1da177e4 LT |
386 | */ |
387 | static int | |
388 | soc_common_pcmcia_set_mem_map(struct pcmcia_socket *sock, struct pccard_mem_map *map) | |
389 | { | |
390 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
391 | struct resource *res; | |
392 | unsigned short speed = map->speed; | |
393 | ||
394 | debug(skt, 2, "map %u speed %u card_start %08x\n", | |
395 | map->map, map->speed, map->card_start); | |
396 | debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n", | |
397 | (map->flags==0)?"<NONE>":"", | |
398 | (map->flags&MAP_ACTIVE)?"ACTIVE ":"", | |
399 | (map->flags&MAP_16BIT)?"16BIT ":"", | |
400 | (map->flags&MAP_AUTOSZ)?"AUTOSZ ":"", | |
401 | (map->flags&MAP_0WS)?"0WS ":"", | |
402 | (map->flags&MAP_WRPROT)?"WRPROT ":"", | |
403 | (map->flags&MAP_ATTRIB)?"ATTRIB ":"", | |
404 | (map->flags&MAP_USE_WAIT)?"USE_WAIT ":""); | |
405 | ||
406 | if (map->map >= MAX_WIN) | |
407 | return -EINVAL; | |
408 | ||
409 | if (map->flags & MAP_ACTIVE) { | |
410 | if (speed == 0) | |
411 | speed = 300; | |
412 | } else { | |
413 | speed = 0; | |
414 | } | |
415 | ||
416 | if (map->flags & MAP_ATTRIB) { | |
417 | res = &skt->res_attr; | |
418 | skt->spd_attr[map->map] = speed; | |
419 | skt->spd_mem[map->map] = 0; | |
420 | } else { | |
421 | res = &skt->res_mem; | |
422 | skt->spd_attr[map->map] = 0; | |
423 | skt->spd_mem[map->map] = speed; | |
424 | } | |
425 | ||
426 | skt->ops->set_timing(skt); | |
427 | ||
428 | map->static_start = res->start + map->card_start; | |
429 | ||
430 | return 0; | |
431 | } | |
432 | ||
433 | struct bittbl { | |
434 | unsigned int mask; | |
435 | const char *name; | |
436 | }; | |
437 | ||
438 | static struct bittbl status_bits[] = { | |
439 | { SS_WRPROT, "SS_WRPROT" }, | |
440 | { SS_BATDEAD, "SS_BATDEAD" }, | |
441 | { SS_BATWARN, "SS_BATWARN" }, | |
442 | { SS_READY, "SS_READY" }, | |
443 | { SS_DETECT, "SS_DETECT" }, | |
444 | { SS_POWERON, "SS_POWERON" }, | |
445 | { SS_STSCHG, "SS_STSCHG" }, | |
446 | { SS_3VCARD, "SS_3VCARD" }, | |
447 | { SS_XVCARD, "SS_XVCARD" }, | |
448 | }; | |
449 | ||
450 | static struct bittbl conf_bits[] = { | |
451 | { SS_PWR_AUTO, "SS_PWR_AUTO" }, | |
452 | { SS_IOCARD, "SS_IOCARD" }, | |
453 | { SS_RESET, "SS_RESET" }, | |
454 | { SS_DMA_MODE, "SS_DMA_MODE" }, | |
455 | { SS_SPKR_ENA, "SS_SPKR_ENA" }, | |
456 | { SS_OUTPUT_ENA, "SS_OUTPUT_ENA" }, | |
457 | }; | |
458 | ||
459 | static void | |
460 | dump_bits(char **p, const char *prefix, unsigned int val, struct bittbl *bits, int sz) | |
461 | { | |
462 | char *b = *p; | |
463 | int i; | |
464 | ||
465 | b += sprintf(b, "%-9s:", prefix); | |
466 | for (i = 0; i < sz; i++) | |
467 | if (val & bits[i].mask) | |
468 | b += sprintf(b, " %s", bits[i].name); | |
469 | *b++ = '\n'; | |
470 | *p = b; | |
471 | } | |
472 | ||
473 | /* | |
474 | * Implements the /sys/class/pcmcia_socket/??/status file. | |
475 | * | |
476 | * Returns: the number of characters added to the buffer | |
477 | */ | |
e4a3c3f0 | 478 | static ssize_t show_status(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
479 | { |
480 | struct soc_pcmcia_socket *skt = | |
87373318 | 481 | container_of(dev, struct soc_pcmcia_socket, socket.dev); |
1da177e4 LT |
482 | char *p = buf; |
483 | ||
484 | p+=sprintf(p, "slot : %d\n", skt->nr); | |
485 | ||
486 | dump_bits(&p, "status", skt->status, | |
487 | status_bits, ARRAY_SIZE(status_bits)); | |
488 | dump_bits(&p, "csc_mask", skt->cs_state.csc_mask, | |
489 | status_bits, ARRAY_SIZE(status_bits)); | |
490 | dump_bits(&p, "cs_flags", skt->cs_state.flags, | |
491 | conf_bits, ARRAY_SIZE(conf_bits)); | |
492 | ||
493 | p+=sprintf(p, "Vcc : %d\n", skt->cs_state.Vcc); | |
494 | p+=sprintf(p, "Vpp : %d\n", skt->cs_state.Vpp); | |
495 | p+=sprintf(p, "IRQ : %d (%d)\n", skt->cs_state.io_irq, skt->irq); | |
496 | if (skt->ops->show_timing) | |
497 | p+=skt->ops->show_timing(skt, p); | |
498 | ||
499 | return p-buf; | |
500 | } | |
e4a3c3f0 | 501 | static DEVICE_ATTR(status, S_IRUGO, show_status, NULL); |
1da177e4 LT |
502 | |
503 | ||
504 | static struct pccard_operations soc_common_pcmcia_operations = { | |
505 | .init = soc_common_pcmcia_sock_init, | |
506 | .suspend = soc_common_pcmcia_suspend, | |
507 | .get_status = soc_common_pcmcia_get_status, | |
1da177e4 LT |
508 | .set_socket = soc_common_pcmcia_set_socket, |
509 | .set_io_map = soc_common_pcmcia_set_io_map, | |
510 | .set_mem_map = soc_common_pcmcia_set_mem_map, | |
511 | }; | |
512 | ||
513 | ||
514 | int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, | |
515 | struct pcmcia_irqs *irqs, int nr) | |
516 | { | |
517 | int i, res = 0; | |
518 | ||
519 | for (i = 0; i < nr; i++) { | |
520 | if (irqs[i].sock != skt->nr) | |
521 | continue; | |
522 | res = request_irq(irqs[i].irq, soc_common_pcmcia_interrupt, | |
dace1453 | 523 | IRQF_DISABLED, irqs[i].str, skt); |
1da177e4 LT |
524 | if (res) |
525 | break; | |
6cab4860 | 526 | set_irq_type(irqs[i].irq, IRQ_TYPE_NONE); |
1da177e4 LT |
527 | } |
528 | ||
529 | if (res) { | |
530 | printk(KERN_ERR "PCMCIA: request for IRQ%d failed (%d)\n", | |
531 | irqs[i].irq, res); | |
532 | ||
533 | while (i--) | |
534 | if (irqs[i].sock == skt->nr) | |
535 | free_irq(irqs[i].irq, skt); | |
536 | } | |
537 | return res; | |
538 | } | |
539 | EXPORT_SYMBOL(soc_pcmcia_request_irqs); | |
540 | ||
541 | void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, | |
542 | struct pcmcia_irqs *irqs, int nr) | |
543 | { | |
544 | int i; | |
545 | ||
546 | for (i = 0; i < nr; i++) | |
547 | if (irqs[i].sock == skt->nr) | |
548 | free_irq(irqs[i].irq, skt); | |
549 | } | |
550 | EXPORT_SYMBOL(soc_pcmcia_free_irqs); | |
551 | ||
552 | void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, | |
553 | struct pcmcia_irqs *irqs, int nr) | |
554 | { | |
555 | int i; | |
556 | ||
557 | for (i = 0; i < nr; i++) | |
558 | if (irqs[i].sock == skt->nr) | |
6cab4860 | 559 | set_irq_type(irqs[i].irq, IRQ_TYPE_NONE); |
1da177e4 LT |
560 | } |
561 | EXPORT_SYMBOL(soc_pcmcia_disable_irqs); | |
562 | ||
563 | void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, | |
564 | struct pcmcia_irqs *irqs, int nr) | |
565 | { | |
566 | int i; | |
567 | ||
568 | for (i = 0; i < nr; i++) | |
569 | if (irqs[i].sock == skt->nr) { | |
6cab4860 DB |
570 | set_irq_type(irqs[i].irq, IRQ_TYPE_EDGE_RISING); |
571 | set_irq_type(irqs[i].irq, IRQ_TYPE_EDGE_BOTH); | |
1da177e4 LT |
572 | } |
573 | } | |
574 | EXPORT_SYMBOL(soc_pcmcia_enable_irqs); | |
575 | ||
576 | ||
097e296d | 577 | static LIST_HEAD(soc_pcmcia_sockets); |
23d077e2 | 578 | static DEFINE_MUTEX(soc_pcmcia_sockets_lock); |
1da177e4 | 579 | |
1da177e4 LT |
580 | #ifdef CONFIG_CPU_FREQ |
581 | static int | |
582 | soc_pcmcia_notifier(struct notifier_block *nb, unsigned long val, void *data) | |
583 | { | |
584 | struct soc_pcmcia_socket *skt; | |
585 | struct cpufreq_freqs *freqs = data; | |
586 | int ret = 0; | |
587 | ||
23d077e2 | 588 | mutex_lock(&soc_pcmcia_sockets_lock); |
1da177e4 LT |
589 | list_for_each_entry(skt, &soc_pcmcia_sockets, node) |
590 | if ( skt->ops->frequency_change ) | |
591 | ret += skt->ops->frequency_change(skt, val, freqs); | |
23d077e2 | 592 | mutex_unlock(&soc_pcmcia_sockets_lock); |
1da177e4 LT |
593 | |
594 | return ret; | |
595 | } | |
596 | ||
597 | static struct notifier_block soc_pcmcia_notifier_block = { | |
598 | .notifier_call = soc_pcmcia_notifier | |
599 | }; | |
600 | ||
601 | static int soc_pcmcia_cpufreq_register(void) | |
602 | { | |
603 | int ret; | |
604 | ||
605 | ret = cpufreq_register_notifier(&soc_pcmcia_notifier_block, | |
606 | CPUFREQ_TRANSITION_NOTIFIER); | |
607 | if (ret < 0) | |
608 | printk(KERN_ERR "Unable to register CPU frequency change " | |
609 | "notifier for PCMCIA (%d)\n", ret); | |
610 | return ret; | |
611 | } | |
0f767de6 | 612 | fs_initcall(soc_pcmcia_cpufreq_register); |
1da177e4 LT |
613 | |
614 | static void soc_pcmcia_cpufreq_unregister(void) | |
615 | { | |
616 | cpufreq_unregister_notifier(&soc_pcmcia_notifier_block, CPUFREQ_TRANSITION_NOTIFIER); | |
617 | } | |
0f767de6 | 618 | module_exit(soc_pcmcia_cpufreq_unregister); |
1da177e4 | 619 | |
1da177e4 LT |
620 | #endif |
621 | ||
097e296d | 622 | void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt) |
1da177e4 | 623 | { |
23d077e2 | 624 | mutex_lock(&soc_pcmcia_sockets_lock); |
097e296d | 625 | del_timer_sync(&skt->poll_timer); |
1da177e4 | 626 | |
097e296d | 627 | pcmcia_unregister_socket(&skt->socket); |
1da177e4 | 628 | |
097e296d | 629 | flush_scheduled_work(); |
1da177e4 | 630 | |
097e296d | 631 | skt->ops->hw_shutdown(skt); |
1da177e4 | 632 | |
097e296d | 633 | soc_common_pcmcia_config_skt(skt, &dead_socket); |
1da177e4 | 634 | |
097e296d RKAL |
635 | list_del(&skt->node); |
636 | mutex_unlock(&soc_pcmcia_sockets_lock); | |
1da177e4 | 637 | |
097e296d RKAL |
638 | iounmap(skt->virt_io); |
639 | skt->virt_io = NULL; | |
640 | release_resource(&skt->res_attr); | |
641 | release_resource(&skt->res_mem); | |
642 | release_resource(&skt->res_io); | |
643 | release_resource(&skt->res_skt); | |
644 | } | |
645 | EXPORT_SYMBOL(soc_pcmcia_remove_one); | |
1da177e4 | 646 | |
097e296d RKAL |
647 | int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt) |
648 | { | |
649 | int ret; | |
1da177e4 | 650 | |
097e296d RKAL |
651 | init_timer(&skt->poll_timer); |
652 | skt->poll_timer.function = soc_common_pcmcia_poll_event; | |
653 | skt->poll_timer.data = (unsigned long)skt; | |
654 | skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD; | |
1da177e4 | 655 | |
097e296d RKAL |
656 | ret = request_resource(&iomem_resource, &skt->res_skt); |
657 | if (ret) | |
658 | goto out_err_1; | |
1da177e4 | 659 | |
097e296d RKAL |
660 | ret = request_resource(&skt->res_skt, &skt->res_io); |
661 | if (ret) | |
662 | goto out_err_2; | |
1da177e4 | 663 | |
097e296d RKAL |
664 | ret = request_resource(&skt->res_skt, &skt->res_mem); |
665 | if (ret) | |
666 | goto out_err_3; | |
1da177e4 | 667 | |
097e296d RKAL |
668 | ret = request_resource(&skt->res_skt, &skt->res_attr); |
669 | if (ret) | |
670 | goto out_err_4; | |
1da177e4 | 671 | |
097e296d RKAL |
672 | skt->virt_io = ioremap(skt->res_io.start, 0x10000); |
673 | if (skt->virt_io == NULL) { | |
674 | ret = -ENOMEM; | |
675 | goto out_err_5; | |
676 | } | |
1da177e4 | 677 | |
097e296d | 678 | mutex_lock(&soc_pcmcia_sockets_lock); |
1da177e4 | 679 | |
097e296d | 680 | list_add(&skt->node, &soc_pcmcia_sockets); |
1da177e4 | 681 | |
097e296d RKAL |
682 | /* |
683 | * We initialize default socket timing here, because | |
684 | * we are not guaranteed to see a SetIOMap operation at | |
685 | * runtime. | |
686 | */ | |
687 | skt->ops->set_timing(skt); | |
1da177e4 | 688 | |
097e296d RKAL |
689 | ret = skt->ops->hw_init(skt); |
690 | if (ret) | |
691 | goto out_err_6; | |
1da177e4 | 692 | |
097e296d RKAL |
693 | skt->socket.ops = &soc_common_pcmcia_operations; |
694 | skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD; | |
695 | skt->socket.resource_ops = &pccard_static_ops; | |
696 | skt->socket.irq_mask = 0; | |
697 | skt->socket.map_size = PAGE_SIZE; | |
698 | skt->socket.pci_irq = skt->irq; | |
699 | skt->socket.io_offset = (unsigned long)skt->virt_io; | |
1da177e4 | 700 | |
097e296d | 701 | skt->status = soc_common_pcmcia_skt_state(skt); |
1da177e4 | 702 | |
097e296d RKAL |
703 | ret = pcmcia_register_socket(&skt->socket); |
704 | if (ret) | |
705 | goto out_err_7; | |
706 | ||
707 | add_timer(&skt->poll_timer); | |
708 | ||
709 | mutex_unlock(&soc_pcmcia_sockets_lock); | |
710 | ||
711 | ret = device_create_file(&skt->socket.dev, &dev_attr_status); | |
712 | if (ret) | |
713 | goto out_err_8; | |
714 | ||
715 | return ret; | |
1da177e4 | 716 | |
632480ea | 717 | out_err_8: |
097e296d RKAL |
718 | mutex_lock(&soc_pcmcia_sockets_lock); |
719 | del_timer_sync(&skt->poll_timer); | |
720 | pcmcia_unregister_socket(&skt->socket); | |
1da177e4 LT |
721 | |
722 | out_err_7: | |
097e296d | 723 | flush_scheduled_work(); |
1da177e4 | 724 | |
097e296d | 725 | skt->ops->hw_shutdown(skt); |
1da177e4 | 726 | out_err_6: |
097e296d RKAL |
727 | list_del(&skt->node); |
728 | mutex_unlock(&soc_pcmcia_sockets_lock); | |
729 | iounmap(skt->virt_io); | |
1da177e4 | 730 | out_err_5: |
097e296d | 731 | release_resource(&skt->res_attr); |
1da177e4 | 732 | out_err_4: |
097e296d | 733 | release_resource(&skt->res_mem); |
1da177e4 | 734 | out_err_3: |
097e296d | 735 | release_resource(&skt->res_io); |
1da177e4 | 736 | out_err_2: |
097e296d | 737 | release_resource(&skt->res_skt); |
1da177e4 | 738 | out_err_1: |
1da177e4 | 739 | |
1da177e4 LT |
740 | return ret; |
741 | } | |
097e296d | 742 | EXPORT_SYMBOL(soc_pcmcia_add_one); |
1da177e4 | 743 | |
0f767de6 RKAL |
744 | MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>"); |
745 | MODULE_DESCRIPTION("Linux PCMCIA Card Services: Common SoC support"); | |
746 | MODULE_LICENSE("Dual MPL/GPL"); |