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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 | ||
17b38ebb | 34 | #include <linux/cpufreq.h> |
1da177e4 | 35 | #include <linux/init.h> |
17b38ebb MRJ |
36 | #include <linux/interrupt.h> |
37 | #include <linux/io.h> | |
38 | #include <linux/irq.h> | |
1da177e4 | 39 | #include <linux/kernel.h> |
1da177e4 | 40 | #include <linux/mm.h> |
17b38ebb MRJ |
41 | #include <linux/module.h> |
42 | #include <linux/moduleparam.h> | |
23d077e2 | 43 | #include <linux/mutex.h> |
1da177e4 | 44 | #include <linux/spinlock.h> |
17b38ebb | 45 | #include <linux/timer.h> |
1da177e4 | 46 | |
a09e64fb | 47 | #include <mach/hardware.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 | { | |
106665d9 | 60 | struct va_format vaf; |
1da177e4 LT |
61 | va_list args; |
62 | if (pc_debug > lvl) { | |
1da177e4 | 63 | va_start(args, fmt); |
106665d9 JP |
64 | |
65 | vaf.fmt = fmt; | |
66 | vaf.va = &args; | |
67 | ||
68 | printk(KERN_DEBUG "skt%u: %s: %pV", skt->nr, func, &vaf); | |
69 | ||
1da177e4 LT |
70 | va_end(args); |
71 | } | |
72 | } | |
b9f515e3 | 73 | EXPORT_SYMBOL(soc_pcmcia_debug); |
1da177e4 LT |
74 | |
75 | #endif | |
76 | ||
17b38ebb MRJ |
77 | #define to_soc_pcmcia_socket(x) \ |
78 | container_of(x, struct soc_pcmcia_socket, socket) | |
1da177e4 LT |
79 | |
80 | static unsigned short | |
81 | calc_speed(unsigned short *spds, int num, unsigned short dflt) | |
82 | { | |
83 | unsigned short speed = 0; | |
84 | int i; | |
85 | ||
86 | for (i = 0; i < num; i++) | |
87 | if (speed < spds[i]) | |
88 | speed = spds[i]; | |
89 | if (speed == 0) | |
90 | speed = dflt; | |
91 | ||
92 | return speed; | |
93 | } | |
94 | ||
17b38ebb MRJ |
95 | void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *skt, |
96 | struct soc_pcmcia_timing *timing) | |
1da177e4 | 97 | { |
17b38ebb MRJ |
98 | timing->io = |
99 | calc_speed(skt->spd_io, MAX_IO_WIN, SOC_PCMCIA_IO_ACCESS); | |
100 | timing->mem = | |
101 | calc_speed(skt->spd_mem, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS); | |
102 | timing->attr = | |
103 | calc_speed(skt->spd_attr, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS); | |
1da177e4 LT |
104 | } |
105 | EXPORT_SYMBOL(soc_common_pcmcia_get_timing); | |
106 | ||
107 | static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt) | |
108 | { | |
109 | struct pcmcia_state state; | |
110 | unsigned int stat; | |
111 | ||
112 | memset(&state, 0, sizeof(struct pcmcia_state)); | |
113 | ||
114 | skt->ops->socket_state(skt, &state); | |
115 | ||
116 | stat = state.detect ? SS_DETECT : 0; | |
117 | stat |= state.ready ? SS_READY : 0; | |
118 | stat |= state.wrprot ? SS_WRPROT : 0; | |
119 | stat |= state.vs_3v ? SS_3VCARD : 0; | |
120 | stat |= state.vs_Xv ? SS_XVCARD : 0; | |
121 | ||
122 | /* The power status of individual sockets is not available | |
123 | * explicitly from the hardware, so we just remember the state | |
124 | * and regurgitate it upon request: | |
125 | */ | |
126 | stat |= skt->cs_state.Vcc ? SS_POWERON : 0; | |
127 | ||
128 | if (skt->cs_state.flags & SS_IOCARD) | |
129 | stat |= state.bvd1 ? SS_STSCHG : 0; | |
130 | else { | |
131 | if (state.bvd1 == 0) | |
132 | stat |= SS_BATDEAD; | |
133 | else if (state.bvd2 == 0) | |
134 | stat |= SS_BATWARN; | |
135 | } | |
136 | return stat; | |
137 | } | |
138 | ||
139 | /* | |
140 | * soc_common_pcmcia_config_skt | |
141 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
142 | * | |
143 | * Convert PCMCIA socket state to our socket configure structure. | |
144 | */ | |
17b38ebb MRJ |
145 | static int soc_common_pcmcia_config_skt( |
146 | struct soc_pcmcia_socket *skt, socket_state_t *state) | |
1da177e4 LT |
147 | { |
148 | int ret; | |
149 | ||
150 | ret = skt->ops->configure_socket(skt, state); | |
151 | if (ret == 0) { | |
152 | /* | |
153 | * This really needs a better solution. The IRQ | |
154 | * may or may not be claimed by the driver. | |
155 | */ | |
156 | if (skt->irq_state != 1 && state->io_irq) { | |
157 | skt->irq_state = 1; | |
17b38ebb MRJ |
158 | set_irq_type(skt->socket.pci_irq, |
159 | IRQ_TYPE_EDGE_FALLING); | |
1da177e4 LT |
160 | } else if (skt->irq_state == 1 && state->io_irq == 0) { |
161 | skt->irq_state = 0; | |
66024db5 | 162 | set_irq_type(skt->socket.pci_irq, IRQ_TYPE_NONE); |
1da177e4 LT |
163 | } |
164 | ||
165 | skt->cs_state = *state; | |
166 | } | |
167 | ||
168 | if (ret < 0) | |
169 | printk(KERN_ERR "soc_common_pcmcia: unable to configure " | |
170 | "socket %d\n", skt->nr); | |
171 | ||
172 | return ret; | |
173 | } | |
174 | ||
175 | /* soc_common_pcmcia_sock_init() | |
176 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
177 | * | |
178 | * (Re-)Initialise the socket, turning on status interrupts | |
179 | * and PCMCIA bus. This must wait for power to stabilise | |
180 | * so that the card status signals report correctly. | |
181 | * | |
182 | * Returns: 0 | |
183 | */ | |
184 | static int soc_common_pcmcia_sock_init(struct pcmcia_socket *sock) | |
185 | { | |
186 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
187 | ||
188 | debug(skt, 2, "initializing socket\n"); | |
189 | ||
190 | skt->ops->socket_init(skt); | |
191 | return 0; | |
192 | } | |
193 | ||
194 | ||
195 | /* | |
196 | * soc_common_pcmcia_suspend() | |
197 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
198 | * | |
199 | * Remove power on the socket, disable IRQs from the card. | |
200 | * Turn off status interrupts, and disable the PCMCIA bus. | |
201 | * | |
202 | * Returns: 0 | |
203 | */ | |
204 | static int soc_common_pcmcia_suspend(struct pcmcia_socket *sock) | |
205 | { | |
206 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
207 | ||
208 | debug(skt, 2, "suspending socket\n"); | |
209 | ||
210 | skt->ops->socket_suspend(skt); | |
211 | ||
212 | return 0; | |
213 | } | |
214 | ||
215 | static DEFINE_SPINLOCK(status_lock); | |
216 | ||
217 | static void soc_common_check_status(struct soc_pcmcia_socket *skt) | |
218 | { | |
219 | unsigned int events; | |
220 | ||
221 | debug(skt, 4, "entering PCMCIA monitoring thread\n"); | |
222 | ||
223 | do { | |
224 | unsigned int status; | |
225 | unsigned long flags; | |
226 | ||
227 | status = soc_common_pcmcia_skt_state(skt); | |
228 | ||
229 | spin_lock_irqsave(&status_lock, flags); | |
230 | events = (status ^ skt->status) & skt->cs_state.csc_mask; | |
231 | skt->status = status; | |
232 | spin_unlock_irqrestore(&status_lock, flags); | |
233 | ||
234 | debug(skt, 4, "events: %s%s%s%s%s%s\n", | |
235 | events == 0 ? "<NONE>" : "", | |
236 | events & SS_DETECT ? "DETECT " : "", | |
237 | events & SS_READY ? "READY " : "", | |
238 | events & SS_BATDEAD ? "BATDEAD " : "", | |
239 | events & SS_BATWARN ? "BATWARN " : "", | |
240 | events & SS_STSCHG ? "STSCHG " : ""); | |
241 | ||
242 | if (events) | |
243 | pcmcia_parse_events(&skt->socket, events); | |
244 | } while (events); | |
245 | } | |
246 | ||
247 | /* Let's poll for events in addition to IRQs since IRQ only is unreliable... */ | |
248 | static void soc_common_pcmcia_poll_event(unsigned long dummy) | |
249 | { | |
250 | struct soc_pcmcia_socket *skt = (struct soc_pcmcia_socket *)dummy; | |
251 | debug(skt, 4, "polling for events\n"); | |
252 | ||
253 | mod_timer(&skt->poll_timer, jiffies + SOC_PCMCIA_POLL_PERIOD); | |
254 | ||
255 | soc_common_check_status(skt); | |
256 | } | |
257 | ||
258 | ||
259 | /* | |
260 | * Service routine for socket driver interrupts (requested by the | |
261 | * low-level PCMCIA init() operation via soc_common_pcmcia_thread()). | |
262 | * The actual interrupt-servicing work is performed by | |
263 | * soc_common_pcmcia_thread(), largely because the Card Services event- | |
264 | * handling code performs scheduling operations which cannot be | |
265 | * executed from within an interrupt context. | |
266 | */ | |
7d12e780 | 267 | static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev) |
1da177e4 LT |
268 | { |
269 | struct soc_pcmcia_socket *skt = dev; | |
270 | ||
271 | debug(skt, 3, "servicing IRQ %d\n", irq); | |
272 | ||
273 | soc_common_check_status(skt); | |
274 | ||
275 | return IRQ_HANDLED; | |
276 | } | |
277 | ||
278 | ||
279 | /* | |
280 | * Implements the get_status() operation for the in-kernel PCMCIA | |
281 | * service (formerly SS_GetStatus in Card Services). Essentially just | |
282 | * fills in bits in `status' according to internal driver state or | |
283 | * the value of the voltage detect chipselect register. | |
284 | * | |
285 | * As a debugging note, during card startup, the PCMCIA core issues | |
286 | * three set_socket() commands in a row the first with RESET deasserted, | |
287 | * the second with RESET asserted, and the last with RESET deasserted | |
288 | * again. Following the third set_socket(), a get_status() command will | |
289 | * be issued. The kernel is looking for the SS_READY flag (see | |
290 | * setup_socket(), reset_socket(), and unreset_socket() in cs.c). | |
291 | * | |
292 | * Returns: 0 | |
293 | */ | |
294 | static int | |
295 | soc_common_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status) | |
296 | { | |
297 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
298 | ||
299 | skt->status = soc_common_pcmcia_skt_state(skt); | |
300 | *status = skt->status; | |
301 | ||
302 | return 0; | |
303 | } | |
304 | ||
305 | ||
1da177e4 LT |
306 | /* |
307 | * Implements the set_socket() operation for the in-kernel PCMCIA | |
308 | * service (formerly SS_SetSocket in Card Services). We more or | |
309 | * less punt all of this work and let the kernel handle the details | |
310 | * of power configuration, reset, &c. We also record the value of | |
311 | * `state' in order to regurgitate it to the PCMCIA core later. | |
1da177e4 | 312 | */ |
17b38ebb MRJ |
313 | static int soc_common_pcmcia_set_socket( |
314 | struct pcmcia_socket *sock, socket_state_t *state) | |
1da177e4 LT |
315 | { |
316 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
317 | ||
17b38ebb MRJ |
318 | debug(skt, 2, "mask: %s%s%s%s%s%s flags: %s%s%s%s%s%s Vcc %d Vpp %d irq %d\n", |
319 | (state->csc_mask == 0) ? "<NONE> " : "", | |
320 | (state->csc_mask & SS_DETECT) ? "DETECT " : "", | |
321 | (state->csc_mask & SS_READY) ? "READY " : "", | |
322 | (state->csc_mask & SS_BATDEAD) ? "BATDEAD " : "", | |
323 | (state->csc_mask & SS_BATWARN) ? "BATWARN " : "", | |
324 | (state->csc_mask & SS_STSCHG) ? "STSCHG " : "", | |
325 | (state->flags == 0) ? "<NONE> " : "", | |
326 | (state->flags & SS_PWR_AUTO) ? "PWR_AUTO " : "", | |
327 | (state->flags & SS_IOCARD) ? "IOCARD " : "", | |
328 | (state->flags & SS_RESET) ? "RESET " : "", | |
329 | (state->flags & SS_SPKR_ENA) ? "SPKR_ENA " : "", | |
330 | (state->flags & SS_OUTPUT_ENA) ? "OUTPUT_ENA " : "", | |
1da177e4 LT |
331 | state->Vcc, state->Vpp, state->io_irq); |
332 | ||
333 | return soc_common_pcmcia_config_skt(skt, state); | |
334 | } | |
335 | ||
336 | ||
337 | /* | |
338 | * Implements the set_io_map() operation for the in-kernel PCMCIA | |
339 | * service (formerly SS_SetIOMap in Card Services). We configure | |
340 | * the map speed as requested, but override the address ranges | |
341 | * supplied by Card Services. | |
342 | * | |
343 | * Returns: 0 on success, -1 on error | |
344 | */ | |
17b38ebb MRJ |
345 | static int soc_common_pcmcia_set_io_map( |
346 | struct pcmcia_socket *sock, struct pccard_io_map *map) | |
1da177e4 LT |
347 | { |
348 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
349 | unsigned short speed = map->speed; | |
350 | ||
5f784336 WS |
351 | debug(skt, 2, "map %u speed %u start 0x%08llx stop 0x%08llx\n", |
352 | map->map, map->speed, (unsigned long long)map->start, | |
353 | (unsigned long long)map->stop); | |
1da177e4 | 354 | debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n", |
17b38ebb MRJ |
355 | (map->flags == 0) ? "<NONE>" : "", |
356 | (map->flags & MAP_ACTIVE) ? "ACTIVE " : "", | |
357 | (map->flags & MAP_16BIT) ? "16BIT " : "", | |
358 | (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "", | |
359 | (map->flags & MAP_0WS) ? "0WS " : "", | |
360 | (map->flags & MAP_WRPROT) ? "WRPROT " : "", | |
361 | (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : "", | |
362 | (map->flags & MAP_PREFETCH) ? "PREFETCH " : ""); | |
1da177e4 LT |
363 | |
364 | if (map->map >= MAX_IO_WIN) { | |
2e11cb4c | 365 | printk(KERN_ERR "%s(): map (%d) out of range\n", __func__, |
1da177e4 LT |
366 | map->map); |
367 | return -1; | |
368 | } | |
369 | ||
370 | if (map->flags & MAP_ACTIVE) { | |
371 | if (speed == 0) | |
372 | speed = SOC_PCMCIA_IO_ACCESS; | |
373 | } else { | |
374 | speed = 0; | |
375 | } | |
376 | ||
377 | skt->spd_io[map->map] = speed; | |
378 | skt->ops->set_timing(skt); | |
379 | ||
380 | if (map->stop == 1) | |
381 | map->stop = PAGE_SIZE-1; | |
382 | ||
383 | map->stop -= map->start; | |
384 | map->stop += skt->socket.io_offset; | |
385 | map->start = skt->socket.io_offset; | |
386 | ||
387 | return 0; | |
388 | } | |
389 | ||
390 | ||
391 | /* | |
392 | * Implements the set_mem_map() operation for the in-kernel PCMCIA | |
393 | * service (formerly SS_SetMemMap in Card Services). We configure | |
394 | * the map speed as requested, but override the address ranges | |
395 | * supplied by Card Services. | |
396 | * | |
4846d017 | 397 | * Returns: 0 on success, -ERRNO on error |
1da177e4 | 398 | */ |
17b38ebb MRJ |
399 | static int soc_common_pcmcia_set_mem_map( |
400 | struct pcmcia_socket *sock, struct pccard_mem_map *map) | |
1da177e4 LT |
401 | { |
402 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
403 | struct resource *res; | |
404 | unsigned short speed = map->speed; | |
405 | ||
406 | debug(skt, 2, "map %u speed %u card_start %08x\n", | |
407 | map->map, map->speed, map->card_start); | |
408 | debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n", | |
17b38ebb MRJ |
409 | (map->flags == 0) ? "<NONE>" : "", |
410 | (map->flags & MAP_ACTIVE) ? "ACTIVE " : "", | |
411 | (map->flags & MAP_16BIT) ? "16BIT " : "", | |
412 | (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "", | |
413 | (map->flags & MAP_0WS) ? "0WS " : "", | |
414 | (map->flags & MAP_WRPROT) ? "WRPROT " : "", | |
415 | (map->flags & MAP_ATTRIB) ? "ATTRIB " : "", | |
416 | (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : ""); | |
1da177e4 LT |
417 | |
418 | if (map->map >= MAX_WIN) | |
419 | return -EINVAL; | |
420 | ||
421 | if (map->flags & MAP_ACTIVE) { | |
422 | if (speed == 0) | |
423 | speed = 300; | |
424 | } else { | |
425 | speed = 0; | |
426 | } | |
427 | ||
428 | if (map->flags & MAP_ATTRIB) { | |
429 | res = &skt->res_attr; | |
430 | skt->spd_attr[map->map] = speed; | |
431 | skt->spd_mem[map->map] = 0; | |
432 | } else { | |
433 | res = &skt->res_mem; | |
434 | skt->spd_attr[map->map] = 0; | |
435 | skt->spd_mem[map->map] = speed; | |
436 | } | |
437 | ||
438 | skt->ops->set_timing(skt); | |
439 | ||
440 | map->static_start = res->start + map->card_start; | |
441 | ||
442 | return 0; | |
443 | } | |
444 | ||
445 | struct bittbl { | |
446 | unsigned int mask; | |
447 | const char *name; | |
448 | }; | |
449 | ||
450 | static struct bittbl status_bits[] = { | |
451 | { SS_WRPROT, "SS_WRPROT" }, | |
452 | { SS_BATDEAD, "SS_BATDEAD" }, | |
453 | { SS_BATWARN, "SS_BATWARN" }, | |
454 | { SS_READY, "SS_READY" }, | |
455 | { SS_DETECT, "SS_DETECT" }, | |
456 | { SS_POWERON, "SS_POWERON" }, | |
457 | { SS_STSCHG, "SS_STSCHG" }, | |
458 | { SS_3VCARD, "SS_3VCARD" }, | |
459 | { SS_XVCARD, "SS_XVCARD" }, | |
460 | }; | |
461 | ||
462 | static struct bittbl conf_bits[] = { | |
463 | { SS_PWR_AUTO, "SS_PWR_AUTO" }, | |
464 | { SS_IOCARD, "SS_IOCARD" }, | |
465 | { SS_RESET, "SS_RESET" }, | |
466 | { SS_DMA_MODE, "SS_DMA_MODE" }, | |
467 | { SS_SPKR_ENA, "SS_SPKR_ENA" }, | |
468 | { SS_OUTPUT_ENA, "SS_OUTPUT_ENA" }, | |
469 | }; | |
470 | ||
17b38ebb MRJ |
471 | static void dump_bits(char **p, const char *prefix, |
472 | unsigned int val, struct bittbl *bits, int sz) | |
1da177e4 LT |
473 | { |
474 | char *b = *p; | |
475 | int i; | |
476 | ||
477 | b += sprintf(b, "%-9s:", prefix); | |
478 | for (i = 0; i < sz; i++) | |
479 | if (val & bits[i].mask) | |
480 | b += sprintf(b, " %s", bits[i].name); | |
481 | *b++ = '\n'; | |
482 | *p = b; | |
483 | } | |
484 | ||
485 | /* | |
486 | * Implements the /sys/class/pcmcia_socket/??/status file. | |
487 | * | |
488 | * Returns: the number of characters added to the buffer | |
489 | */ | |
17b38ebb MRJ |
490 | static ssize_t show_status( |
491 | struct device *dev, struct device_attribute *attr, char *buf) | |
1da177e4 LT |
492 | { |
493 | struct soc_pcmcia_socket *skt = | |
87373318 | 494 | container_of(dev, struct soc_pcmcia_socket, socket.dev); |
1da177e4 LT |
495 | char *p = buf; |
496 | ||
17b38ebb | 497 | p += sprintf(p, "slot : %d\n", skt->nr); |
1da177e4 LT |
498 | |
499 | dump_bits(&p, "status", skt->status, | |
500 | status_bits, ARRAY_SIZE(status_bits)); | |
501 | dump_bits(&p, "csc_mask", skt->cs_state.csc_mask, | |
502 | status_bits, ARRAY_SIZE(status_bits)); | |
503 | dump_bits(&p, "cs_flags", skt->cs_state.flags, | |
504 | conf_bits, ARRAY_SIZE(conf_bits)); | |
505 | ||
17b38ebb MRJ |
506 | p += sprintf(p, "Vcc : %d\n", skt->cs_state.Vcc); |
507 | p += sprintf(p, "Vpp : %d\n", skt->cs_state.Vpp); | |
508 | p += sprintf(p, "IRQ : %d (%d)\n", skt->cs_state.io_irq, | |
66024db5 | 509 | skt->socket.pci_irq); |
1da177e4 | 510 | if (skt->ops->show_timing) |
17b38ebb | 511 | p += skt->ops->show_timing(skt, p); |
1da177e4 LT |
512 | |
513 | return p-buf; | |
514 | } | |
e4a3c3f0 | 515 | static DEVICE_ATTR(status, S_IRUGO, show_status, NULL); |
1da177e4 LT |
516 | |
517 | ||
518 | static struct pccard_operations soc_common_pcmcia_operations = { | |
519 | .init = soc_common_pcmcia_sock_init, | |
520 | .suspend = soc_common_pcmcia_suspend, | |
521 | .get_status = soc_common_pcmcia_get_status, | |
1da177e4 LT |
522 | .set_socket = soc_common_pcmcia_set_socket, |
523 | .set_io_map = soc_common_pcmcia_set_io_map, | |
524 | .set_mem_map = soc_common_pcmcia_set_mem_map, | |
525 | }; | |
526 | ||
527 | ||
528 | int soc_pcmcia_request_irqs(struct soc_pcmcia_socket *skt, | |
529 | struct pcmcia_irqs *irqs, int nr) | |
530 | { | |
531 | int i, res = 0; | |
532 | ||
533 | for (i = 0; i < nr; i++) { | |
534 | if (irqs[i].sock != skt->nr) | |
535 | continue; | |
536 | res = request_irq(irqs[i].irq, soc_common_pcmcia_interrupt, | |
dace1453 | 537 | IRQF_DISABLED, irqs[i].str, skt); |
1da177e4 LT |
538 | if (res) |
539 | break; | |
6cab4860 | 540 | set_irq_type(irqs[i].irq, IRQ_TYPE_NONE); |
1da177e4 LT |
541 | } |
542 | ||
543 | if (res) { | |
544 | printk(KERN_ERR "PCMCIA: request for IRQ%d failed (%d)\n", | |
545 | irqs[i].irq, res); | |
546 | ||
547 | while (i--) | |
548 | if (irqs[i].sock == skt->nr) | |
549 | free_irq(irqs[i].irq, skt); | |
550 | } | |
551 | return res; | |
552 | } | |
553 | EXPORT_SYMBOL(soc_pcmcia_request_irqs); | |
554 | ||
555 | void soc_pcmcia_free_irqs(struct soc_pcmcia_socket *skt, | |
556 | struct pcmcia_irqs *irqs, int nr) | |
557 | { | |
558 | int i; | |
559 | ||
560 | for (i = 0; i < nr; i++) | |
561 | if (irqs[i].sock == skt->nr) | |
562 | free_irq(irqs[i].irq, skt); | |
563 | } | |
564 | EXPORT_SYMBOL(soc_pcmcia_free_irqs); | |
565 | ||
566 | void soc_pcmcia_disable_irqs(struct soc_pcmcia_socket *skt, | |
567 | struct pcmcia_irqs *irqs, int nr) | |
568 | { | |
569 | int i; | |
570 | ||
571 | for (i = 0; i < nr; i++) | |
572 | if (irqs[i].sock == skt->nr) | |
6cab4860 | 573 | set_irq_type(irqs[i].irq, IRQ_TYPE_NONE); |
1da177e4 LT |
574 | } |
575 | EXPORT_SYMBOL(soc_pcmcia_disable_irqs); | |
576 | ||
577 | void soc_pcmcia_enable_irqs(struct soc_pcmcia_socket *skt, | |
578 | struct pcmcia_irqs *irqs, int nr) | |
579 | { | |
580 | int i; | |
581 | ||
582 | for (i = 0; i < nr; i++) | |
583 | if (irqs[i].sock == skt->nr) { | |
6cab4860 DES |
584 | set_irq_type(irqs[i].irq, IRQ_TYPE_EDGE_RISING); |
585 | set_irq_type(irqs[i].irq, IRQ_TYPE_EDGE_BOTH); | |
1da177e4 LT |
586 | } |
587 | } | |
588 | EXPORT_SYMBOL(soc_pcmcia_enable_irqs); | |
589 | ||
590 | ||
097e296d | 591 | static LIST_HEAD(soc_pcmcia_sockets); |
23d077e2 | 592 | static DEFINE_MUTEX(soc_pcmcia_sockets_lock); |
1da177e4 | 593 | |
1da177e4 LT |
594 | #ifdef CONFIG_CPU_FREQ |
595 | static int | |
596 | soc_pcmcia_notifier(struct notifier_block *nb, unsigned long val, void *data) | |
597 | { | |
598 | struct soc_pcmcia_socket *skt; | |
599 | struct cpufreq_freqs *freqs = data; | |
600 | int ret = 0; | |
601 | ||
23d077e2 | 602 | mutex_lock(&soc_pcmcia_sockets_lock); |
1da177e4 | 603 | list_for_each_entry(skt, &soc_pcmcia_sockets, node) |
17b38ebb | 604 | if (skt->ops->frequency_change) |
1da177e4 | 605 | ret += skt->ops->frequency_change(skt, val, freqs); |
23d077e2 | 606 | mutex_unlock(&soc_pcmcia_sockets_lock); |
1da177e4 LT |
607 | |
608 | return ret; | |
609 | } | |
610 | ||
611 | static struct notifier_block soc_pcmcia_notifier_block = { | |
612 | .notifier_call = soc_pcmcia_notifier | |
613 | }; | |
614 | ||
615 | static int soc_pcmcia_cpufreq_register(void) | |
616 | { | |
617 | int ret; | |
618 | ||
619 | ret = cpufreq_register_notifier(&soc_pcmcia_notifier_block, | |
620 | CPUFREQ_TRANSITION_NOTIFIER); | |
621 | if (ret < 0) | |
622 | printk(KERN_ERR "Unable to register CPU frequency change " | |
623 | "notifier for PCMCIA (%d)\n", ret); | |
624 | return ret; | |
625 | } | |
0f767de6 | 626 | fs_initcall(soc_pcmcia_cpufreq_register); |
1da177e4 LT |
627 | |
628 | static void soc_pcmcia_cpufreq_unregister(void) | |
629 | { | |
17b38ebb MRJ |
630 | cpufreq_unregister_notifier(&soc_pcmcia_notifier_block, |
631 | CPUFREQ_TRANSITION_NOTIFIER); | |
1da177e4 | 632 | } |
0f767de6 | 633 | module_exit(soc_pcmcia_cpufreq_unregister); |
1da177e4 | 634 | |
1da177e4 LT |
635 | #endif |
636 | ||
097e296d | 637 | void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt) |
1da177e4 | 638 | { |
23d077e2 | 639 | mutex_lock(&soc_pcmcia_sockets_lock); |
097e296d | 640 | del_timer_sync(&skt->poll_timer); |
1da177e4 | 641 | |
097e296d | 642 | pcmcia_unregister_socket(&skt->socket); |
1da177e4 | 643 | |
097e296d | 644 | skt->ops->hw_shutdown(skt); |
1da177e4 | 645 | |
097e296d | 646 | soc_common_pcmcia_config_skt(skt, &dead_socket); |
1da177e4 | 647 | |
097e296d RKAL |
648 | list_del(&skt->node); |
649 | mutex_unlock(&soc_pcmcia_sockets_lock); | |
1da177e4 | 650 | |
097e296d RKAL |
651 | iounmap(skt->virt_io); |
652 | skt->virt_io = NULL; | |
653 | release_resource(&skt->res_attr); | |
654 | release_resource(&skt->res_mem); | |
655 | release_resource(&skt->res_io); | |
656 | release_resource(&skt->res_skt); | |
657 | } | |
658 | EXPORT_SYMBOL(soc_pcmcia_remove_one); | |
1da177e4 | 659 | |
097e296d RKAL |
660 | int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt) |
661 | { | |
662 | int ret; | |
1da177e4 | 663 | |
097e296d RKAL |
664 | init_timer(&skt->poll_timer); |
665 | skt->poll_timer.function = soc_common_pcmcia_poll_event; | |
666 | skt->poll_timer.data = (unsigned long)skt; | |
667 | skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD; | |
1da177e4 | 668 | |
097e296d RKAL |
669 | ret = request_resource(&iomem_resource, &skt->res_skt); |
670 | if (ret) | |
671 | goto out_err_1; | |
1da177e4 | 672 | |
097e296d RKAL |
673 | ret = request_resource(&skt->res_skt, &skt->res_io); |
674 | if (ret) | |
675 | goto out_err_2; | |
1da177e4 | 676 | |
097e296d RKAL |
677 | ret = request_resource(&skt->res_skt, &skt->res_mem); |
678 | if (ret) | |
679 | goto out_err_3; | |
1da177e4 | 680 | |
097e296d RKAL |
681 | ret = request_resource(&skt->res_skt, &skt->res_attr); |
682 | if (ret) | |
683 | goto out_err_4; | |
1da177e4 | 684 | |
097e296d RKAL |
685 | skt->virt_io = ioremap(skt->res_io.start, 0x10000); |
686 | if (skt->virt_io == NULL) { | |
687 | ret = -ENOMEM; | |
688 | goto out_err_5; | |
689 | } | |
1da177e4 | 690 | |
097e296d | 691 | mutex_lock(&soc_pcmcia_sockets_lock); |
1da177e4 | 692 | |
097e296d | 693 | list_add(&skt->node, &soc_pcmcia_sockets); |
1da177e4 | 694 | |
097e296d RKAL |
695 | /* |
696 | * We initialize default socket timing here, because | |
697 | * we are not guaranteed to see a SetIOMap operation at | |
698 | * runtime. | |
699 | */ | |
700 | skt->ops->set_timing(skt); | |
1da177e4 | 701 | |
097e296d RKAL |
702 | ret = skt->ops->hw_init(skt); |
703 | if (ret) | |
704 | goto out_err_6; | |
1da177e4 | 705 | |
097e296d RKAL |
706 | skt->socket.ops = &soc_common_pcmcia_operations; |
707 | skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD; | |
708 | skt->socket.resource_ops = &pccard_static_ops; | |
709 | skt->socket.irq_mask = 0; | |
710 | skt->socket.map_size = PAGE_SIZE; | |
097e296d | 711 | skt->socket.io_offset = (unsigned long)skt->virt_io; |
1da177e4 | 712 | |
097e296d | 713 | skt->status = soc_common_pcmcia_skt_state(skt); |
1da177e4 | 714 | |
097e296d RKAL |
715 | ret = pcmcia_register_socket(&skt->socket); |
716 | if (ret) | |
717 | goto out_err_7; | |
718 | ||
719 | add_timer(&skt->poll_timer); | |
720 | ||
721 | mutex_unlock(&soc_pcmcia_sockets_lock); | |
722 | ||
723 | ret = device_create_file(&skt->socket.dev, &dev_attr_status); | |
724 | if (ret) | |
725 | goto out_err_8; | |
726 | ||
727 | return ret; | |
1da177e4 | 728 | |
632480ea | 729 | out_err_8: |
097e296d RKAL |
730 | mutex_lock(&soc_pcmcia_sockets_lock); |
731 | del_timer_sync(&skt->poll_timer); | |
732 | pcmcia_unregister_socket(&skt->socket); | |
1da177e4 LT |
733 | |
734 | out_err_7: | |
097e296d | 735 | skt->ops->hw_shutdown(skt); |
1da177e4 | 736 | out_err_6: |
097e296d RKAL |
737 | list_del(&skt->node); |
738 | mutex_unlock(&soc_pcmcia_sockets_lock); | |
739 | iounmap(skt->virt_io); | |
1da177e4 | 740 | out_err_5: |
097e296d | 741 | release_resource(&skt->res_attr); |
1da177e4 | 742 | out_err_4: |
097e296d | 743 | release_resource(&skt->res_mem); |
1da177e4 | 744 | out_err_3: |
097e296d | 745 | release_resource(&skt->res_io); |
1da177e4 | 746 | out_err_2: |
097e296d | 747 | release_resource(&skt->res_skt); |
1da177e4 | 748 | out_err_1: |
1da177e4 | 749 | |
1da177e4 LT |
750 | return ret; |
751 | } | |
097e296d | 752 | EXPORT_SYMBOL(soc_pcmcia_add_one); |
1da177e4 | 753 | |
0f767de6 RKAL |
754 | MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>"); |
755 | MODULE_DESCRIPTION("Linux PCMCIA Card Services: Common SoC support"); | |
756 | MODULE_LICENSE("Dual MPL/GPL"); |