Commit | Line | Data |
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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> |
d9dc8787 | 35 | #include <linux/gpio.h> |
1da177e4 | 36 | #include <linux/init.h> |
17b38ebb MRJ |
37 | #include <linux/interrupt.h> |
38 | #include <linux/io.h> | |
39 | #include <linux/irq.h> | |
1da177e4 | 40 | #include <linux/kernel.h> |
1da177e4 | 41 | #include <linux/mm.h> |
17b38ebb MRJ |
42 | #include <linux/module.h> |
43 | #include <linux/moduleparam.h> | |
23d077e2 | 44 | #include <linux/mutex.h> |
1da177e4 | 45 | #include <linux/spinlock.h> |
17b38ebb | 46 | #include <linux/timer.h> |
1da177e4 | 47 | |
a09e64fb | 48 | #include <mach/hardware.h> |
1da177e4 LT |
49 | #include <asm/system.h> |
50 | ||
51 | #include "soc_common.h" | |
52 | ||
d9dc8787 RK |
53 | static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev); |
54 | ||
7d16b658 | 55 | #ifdef CONFIG_PCMCIA_DEBUG |
1da177e4 LT |
56 | |
57 | static int pc_debug; | |
58 | module_param(pc_debug, int, 0644); | |
59 | ||
60 | void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func, | |
61 | int lvl, const char *fmt, ...) | |
62 | { | |
106665d9 | 63 | struct va_format vaf; |
1da177e4 LT |
64 | va_list args; |
65 | if (pc_debug > lvl) { | |
1da177e4 | 66 | va_start(args, fmt); |
106665d9 JP |
67 | |
68 | vaf.fmt = fmt; | |
69 | vaf.va = &args; | |
70 | ||
71 | printk(KERN_DEBUG "skt%u: %s: %pV", skt->nr, func, &vaf); | |
72 | ||
1da177e4 LT |
73 | va_end(args); |
74 | } | |
75 | } | |
b9f515e3 | 76 | EXPORT_SYMBOL(soc_pcmcia_debug); |
1da177e4 LT |
77 | |
78 | #endif | |
79 | ||
17b38ebb MRJ |
80 | #define to_soc_pcmcia_socket(x) \ |
81 | container_of(x, struct soc_pcmcia_socket, socket) | |
1da177e4 LT |
82 | |
83 | static unsigned short | |
84 | calc_speed(unsigned short *spds, int num, unsigned short dflt) | |
85 | { | |
86 | unsigned short speed = 0; | |
87 | int i; | |
88 | ||
89 | for (i = 0; i < num; i++) | |
90 | if (speed < spds[i]) | |
91 | speed = spds[i]; | |
92 | if (speed == 0) | |
93 | speed = dflt; | |
94 | ||
95 | return speed; | |
96 | } | |
97 | ||
17b38ebb MRJ |
98 | void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *skt, |
99 | struct soc_pcmcia_timing *timing) | |
1da177e4 | 100 | { |
17b38ebb MRJ |
101 | timing->io = |
102 | calc_speed(skt->spd_io, MAX_IO_WIN, SOC_PCMCIA_IO_ACCESS); | |
103 | timing->mem = | |
104 | calc_speed(skt->spd_mem, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS); | |
105 | timing->attr = | |
106 | calc_speed(skt->spd_attr, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS); | |
1da177e4 LT |
107 | } |
108 | EXPORT_SYMBOL(soc_common_pcmcia_get_timing); | |
109 | ||
d9dc8787 RK |
110 | static void __soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt, |
111 | unsigned int nr) | |
112 | { | |
113 | unsigned int i; | |
114 | ||
115 | for (i = 0; i < nr; i++) { | |
116 | if (skt->stat[i].irq) | |
117 | free_irq(skt->stat[i].irq, skt); | |
118 | if (gpio_is_valid(skt->stat[i].gpio)) | |
119 | gpio_free(skt->stat[i].gpio); | |
120 | } | |
121 | ||
122 | if (skt->ops->hw_shutdown) | |
123 | skt->ops->hw_shutdown(skt); | |
124 | } | |
125 | ||
126 | static void soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) | |
127 | { | |
128 | __soc_pcmcia_hw_shutdown(skt, ARRAY_SIZE(skt->stat)); | |
129 | } | |
130 | ||
131 | static int soc_pcmcia_hw_init(struct soc_pcmcia_socket *skt) | |
132 | { | |
133 | int ret = 0, i; | |
134 | ||
135 | if (skt->ops->hw_init) { | |
136 | ret = skt->ops->hw_init(skt); | |
137 | if (ret) | |
138 | return ret; | |
139 | } | |
140 | ||
141 | for (i = 0; i < ARRAY_SIZE(skt->stat); i++) { | |
142 | if (gpio_is_valid(skt->stat[i].gpio)) { | |
143 | int irq; | |
144 | ||
145 | ret = gpio_request_one(skt->stat[i].gpio, GPIOF_IN, | |
146 | skt->stat[i].name); | |
147 | if (ret) { | |
148 | __soc_pcmcia_hw_shutdown(skt, i); | |
149 | return ret; | |
150 | } | |
151 | ||
152 | irq = gpio_to_irq(skt->stat[i].gpio); | |
153 | ||
154 | if (i == SOC_STAT_RDY) | |
155 | skt->socket.pci_irq = irq; | |
156 | else | |
157 | skt->stat[i].irq = irq; | |
158 | } | |
159 | ||
160 | if (skt->stat[i].irq) { | |
161 | ret = request_irq(skt->stat[i].irq, | |
162 | soc_common_pcmcia_interrupt, | |
163 | IRQF_TRIGGER_NONE, | |
164 | skt->stat[i].name, skt); | |
165 | if (ret) { | |
166 | if (gpio_is_valid(skt->stat[i].gpio)) | |
167 | gpio_free(skt->stat[i].gpio); | |
168 | __soc_pcmcia_hw_shutdown(skt, i); | |
169 | return ret; | |
170 | } | |
171 | } | |
172 | } | |
173 | ||
174 | return ret; | |
175 | } | |
176 | ||
177 | static void soc_pcmcia_hw_enable(struct soc_pcmcia_socket *skt) | |
178 | { | |
179 | int i; | |
180 | ||
181 | for (i = 0; i < ARRAY_SIZE(skt->stat); i++) | |
182 | if (skt->stat[i].irq) { | |
183 | irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_EDGE_RISING); | |
184 | irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_EDGE_BOTH); | |
185 | } | |
186 | } | |
187 | ||
188 | static void soc_pcmcia_hw_disable(struct soc_pcmcia_socket *skt) | |
189 | { | |
190 | int i; | |
191 | ||
192 | for (i = 0; i < ARRAY_SIZE(skt->stat); i++) | |
193 | if (skt->stat[i].irq) | |
194 | irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_NONE); | |
195 | } | |
196 | ||
1da177e4 LT |
197 | static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt) |
198 | { | |
199 | struct pcmcia_state state; | |
200 | unsigned int stat; | |
201 | ||
202 | memset(&state, 0, sizeof(struct pcmcia_state)); | |
203 | ||
d9dc8787 RK |
204 | /* Make battery voltage state report 'good' */ |
205 | state.bvd1 = 1; | |
206 | state.bvd2 = 1; | |
207 | ||
208 | /* CD is active low by default */ | |
209 | if (gpio_is_valid(skt->stat[SOC_STAT_CD].gpio)) | |
210 | state.detect = !gpio_get_value(skt->stat[SOC_STAT_CD].gpio); | |
211 | ||
212 | /* RDY and BVD are active high by default */ | |
213 | if (gpio_is_valid(skt->stat[SOC_STAT_RDY].gpio)) | |
214 | state.ready = !!gpio_get_value(skt->stat[SOC_STAT_RDY].gpio); | |
215 | if (gpio_is_valid(skt->stat[SOC_STAT_BVD1].gpio)) | |
216 | state.bvd1 = !!gpio_get_value(skt->stat[SOC_STAT_BVD1].gpio); | |
217 | if (gpio_is_valid(skt->stat[SOC_STAT_BVD2].gpio)) | |
218 | state.bvd2 = !!gpio_get_value(skt->stat[SOC_STAT_BVD2].gpio); | |
219 | ||
1da177e4 LT |
220 | skt->ops->socket_state(skt, &state); |
221 | ||
222 | stat = state.detect ? SS_DETECT : 0; | |
223 | stat |= state.ready ? SS_READY : 0; | |
224 | stat |= state.wrprot ? SS_WRPROT : 0; | |
225 | stat |= state.vs_3v ? SS_3VCARD : 0; | |
226 | stat |= state.vs_Xv ? SS_XVCARD : 0; | |
227 | ||
228 | /* The power status of individual sockets is not available | |
229 | * explicitly from the hardware, so we just remember the state | |
230 | * and regurgitate it upon request: | |
231 | */ | |
232 | stat |= skt->cs_state.Vcc ? SS_POWERON : 0; | |
233 | ||
234 | if (skt->cs_state.flags & SS_IOCARD) | |
235 | stat |= state.bvd1 ? SS_STSCHG : 0; | |
236 | else { | |
237 | if (state.bvd1 == 0) | |
238 | stat |= SS_BATDEAD; | |
239 | else if (state.bvd2 == 0) | |
240 | stat |= SS_BATWARN; | |
241 | } | |
242 | return stat; | |
243 | } | |
244 | ||
245 | /* | |
246 | * soc_common_pcmcia_config_skt | |
247 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
248 | * | |
249 | * Convert PCMCIA socket state to our socket configure structure. | |
250 | */ | |
17b38ebb MRJ |
251 | static int soc_common_pcmcia_config_skt( |
252 | struct soc_pcmcia_socket *skt, socket_state_t *state) | |
1da177e4 LT |
253 | { |
254 | int ret; | |
255 | ||
256 | ret = skt->ops->configure_socket(skt, state); | |
257 | if (ret == 0) { | |
258 | /* | |
259 | * This really needs a better solution. The IRQ | |
260 | * may or may not be claimed by the driver. | |
261 | */ | |
262 | if (skt->irq_state != 1 && state->io_irq) { | |
263 | skt->irq_state = 1; | |
dced35ae TG |
264 | irq_set_irq_type(skt->socket.pci_irq, |
265 | IRQ_TYPE_EDGE_FALLING); | |
1da177e4 LT |
266 | } else if (skt->irq_state == 1 && state->io_irq == 0) { |
267 | skt->irq_state = 0; | |
dced35ae | 268 | irq_set_irq_type(skt->socket.pci_irq, IRQ_TYPE_NONE); |
1da177e4 LT |
269 | } |
270 | ||
271 | skt->cs_state = *state; | |
272 | } | |
273 | ||
274 | if (ret < 0) | |
275 | printk(KERN_ERR "soc_common_pcmcia: unable to configure " | |
276 | "socket %d\n", skt->nr); | |
277 | ||
278 | return ret; | |
279 | } | |
280 | ||
281 | /* soc_common_pcmcia_sock_init() | |
282 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
283 | * | |
284 | * (Re-)Initialise the socket, turning on status interrupts | |
285 | * and PCMCIA bus. This must wait for power to stabilise | |
286 | * so that the card status signals report correctly. | |
287 | * | |
288 | * Returns: 0 | |
289 | */ | |
290 | static int soc_common_pcmcia_sock_init(struct pcmcia_socket *sock) | |
291 | { | |
292 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
293 | ||
294 | debug(skt, 2, "initializing socket\n"); | |
a747ce83 JC |
295 | if (skt->ops->socket_init) |
296 | skt->ops->socket_init(skt); | |
d9dc8787 | 297 | soc_pcmcia_hw_enable(skt); |
1da177e4 LT |
298 | return 0; |
299 | } | |
300 | ||
301 | ||
302 | /* | |
303 | * soc_common_pcmcia_suspend() | |
304 | * ^^^^^^^^^^^^^^^^^^^^^^^^^^^ | |
305 | * | |
306 | * Remove power on the socket, disable IRQs from the card. | |
307 | * Turn off status interrupts, and disable the PCMCIA bus. | |
308 | * | |
309 | * Returns: 0 | |
310 | */ | |
311 | static int soc_common_pcmcia_suspend(struct pcmcia_socket *sock) | |
312 | { | |
313 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
314 | ||
315 | debug(skt, 2, "suspending socket\n"); | |
316 | ||
d9dc8787 | 317 | soc_pcmcia_hw_disable(skt); |
a747ce83 JC |
318 | if (skt->ops->socket_suspend) |
319 | skt->ops->socket_suspend(skt); | |
1da177e4 LT |
320 | |
321 | return 0; | |
322 | } | |
323 | ||
324 | static DEFINE_SPINLOCK(status_lock); | |
325 | ||
326 | static void soc_common_check_status(struct soc_pcmcia_socket *skt) | |
327 | { | |
328 | unsigned int events; | |
329 | ||
330 | debug(skt, 4, "entering PCMCIA monitoring thread\n"); | |
331 | ||
332 | do { | |
333 | unsigned int status; | |
334 | unsigned long flags; | |
335 | ||
336 | status = soc_common_pcmcia_skt_state(skt); | |
337 | ||
338 | spin_lock_irqsave(&status_lock, flags); | |
339 | events = (status ^ skt->status) & skt->cs_state.csc_mask; | |
340 | skt->status = status; | |
341 | spin_unlock_irqrestore(&status_lock, flags); | |
342 | ||
343 | debug(skt, 4, "events: %s%s%s%s%s%s\n", | |
344 | events == 0 ? "<NONE>" : "", | |
345 | events & SS_DETECT ? "DETECT " : "", | |
346 | events & SS_READY ? "READY " : "", | |
347 | events & SS_BATDEAD ? "BATDEAD " : "", | |
348 | events & SS_BATWARN ? "BATWARN " : "", | |
349 | events & SS_STSCHG ? "STSCHG " : ""); | |
350 | ||
351 | if (events) | |
352 | pcmcia_parse_events(&skt->socket, events); | |
353 | } while (events); | |
354 | } | |
355 | ||
356 | /* Let's poll for events in addition to IRQs since IRQ only is unreliable... */ | |
357 | static void soc_common_pcmcia_poll_event(unsigned long dummy) | |
358 | { | |
359 | struct soc_pcmcia_socket *skt = (struct soc_pcmcia_socket *)dummy; | |
360 | debug(skt, 4, "polling for events\n"); | |
361 | ||
362 | mod_timer(&skt->poll_timer, jiffies + SOC_PCMCIA_POLL_PERIOD); | |
363 | ||
364 | soc_common_check_status(skt); | |
365 | } | |
366 | ||
367 | ||
368 | /* | |
369 | * Service routine for socket driver interrupts (requested by the | |
370 | * low-level PCMCIA init() operation via soc_common_pcmcia_thread()). | |
371 | * The actual interrupt-servicing work is performed by | |
372 | * soc_common_pcmcia_thread(), largely because the Card Services event- | |
373 | * handling code performs scheduling operations which cannot be | |
374 | * executed from within an interrupt context. | |
375 | */ | |
7d12e780 | 376 | static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev) |
1da177e4 LT |
377 | { |
378 | struct soc_pcmcia_socket *skt = dev; | |
379 | ||
380 | debug(skt, 3, "servicing IRQ %d\n", irq); | |
381 | ||
382 | soc_common_check_status(skt); | |
383 | ||
384 | return IRQ_HANDLED; | |
385 | } | |
386 | ||
387 | ||
388 | /* | |
389 | * Implements the get_status() operation for the in-kernel PCMCIA | |
390 | * service (formerly SS_GetStatus in Card Services). Essentially just | |
391 | * fills in bits in `status' according to internal driver state or | |
392 | * the value of the voltage detect chipselect register. | |
393 | * | |
394 | * As a debugging note, during card startup, the PCMCIA core issues | |
395 | * three set_socket() commands in a row the first with RESET deasserted, | |
396 | * the second with RESET asserted, and the last with RESET deasserted | |
397 | * again. Following the third set_socket(), a get_status() command will | |
398 | * be issued. The kernel is looking for the SS_READY flag (see | |
399 | * setup_socket(), reset_socket(), and unreset_socket() in cs.c). | |
400 | * | |
401 | * Returns: 0 | |
402 | */ | |
403 | static int | |
404 | soc_common_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status) | |
405 | { | |
406 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
407 | ||
408 | skt->status = soc_common_pcmcia_skt_state(skt); | |
409 | *status = skt->status; | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
414 | ||
1da177e4 LT |
415 | /* |
416 | * Implements the set_socket() operation for the in-kernel PCMCIA | |
417 | * service (formerly SS_SetSocket in Card Services). We more or | |
418 | * less punt all of this work and let the kernel handle the details | |
419 | * of power configuration, reset, &c. We also record the value of | |
420 | * `state' in order to regurgitate it to the PCMCIA core later. | |
1da177e4 | 421 | */ |
17b38ebb MRJ |
422 | static int soc_common_pcmcia_set_socket( |
423 | struct pcmcia_socket *sock, socket_state_t *state) | |
1da177e4 LT |
424 | { |
425 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
426 | ||
17b38ebb MRJ |
427 | debug(skt, 2, "mask: %s%s%s%s%s%s flags: %s%s%s%s%s%s Vcc %d Vpp %d irq %d\n", |
428 | (state->csc_mask == 0) ? "<NONE> " : "", | |
429 | (state->csc_mask & SS_DETECT) ? "DETECT " : "", | |
430 | (state->csc_mask & SS_READY) ? "READY " : "", | |
431 | (state->csc_mask & SS_BATDEAD) ? "BATDEAD " : "", | |
432 | (state->csc_mask & SS_BATWARN) ? "BATWARN " : "", | |
433 | (state->csc_mask & SS_STSCHG) ? "STSCHG " : "", | |
434 | (state->flags == 0) ? "<NONE> " : "", | |
435 | (state->flags & SS_PWR_AUTO) ? "PWR_AUTO " : "", | |
436 | (state->flags & SS_IOCARD) ? "IOCARD " : "", | |
437 | (state->flags & SS_RESET) ? "RESET " : "", | |
438 | (state->flags & SS_SPKR_ENA) ? "SPKR_ENA " : "", | |
439 | (state->flags & SS_OUTPUT_ENA) ? "OUTPUT_ENA " : "", | |
1da177e4 LT |
440 | state->Vcc, state->Vpp, state->io_irq); |
441 | ||
442 | return soc_common_pcmcia_config_skt(skt, state); | |
443 | } | |
444 | ||
445 | ||
446 | /* | |
447 | * Implements the set_io_map() operation for the in-kernel PCMCIA | |
448 | * service (formerly SS_SetIOMap in Card Services). We configure | |
449 | * the map speed as requested, but override the address ranges | |
450 | * supplied by Card Services. | |
451 | * | |
452 | * Returns: 0 on success, -1 on error | |
453 | */ | |
17b38ebb MRJ |
454 | static int soc_common_pcmcia_set_io_map( |
455 | struct pcmcia_socket *sock, struct pccard_io_map *map) | |
1da177e4 LT |
456 | { |
457 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
458 | unsigned short speed = map->speed; | |
459 | ||
5f784336 WS |
460 | debug(skt, 2, "map %u speed %u start 0x%08llx stop 0x%08llx\n", |
461 | map->map, map->speed, (unsigned long long)map->start, | |
462 | (unsigned long long)map->stop); | |
1da177e4 | 463 | debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n", |
17b38ebb MRJ |
464 | (map->flags == 0) ? "<NONE>" : "", |
465 | (map->flags & MAP_ACTIVE) ? "ACTIVE " : "", | |
466 | (map->flags & MAP_16BIT) ? "16BIT " : "", | |
467 | (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "", | |
468 | (map->flags & MAP_0WS) ? "0WS " : "", | |
469 | (map->flags & MAP_WRPROT) ? "WRPROT " : "", | |
470 | (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : "", | |
471 | (map->flags & MAP_PREFETCH) ? "PREFETCH " : ""); | |
1da177e4 LT |
472 | |
473 | if (map->map >= MAX_IO_WIN) { | |
2e11cb4c | 474 | printk(KERN_ERR "%s(): map (%d) out of range\n", __func__, |
1da177e4 LT |
475 | map->map); |
476 | return -1; | |
477 | } | |
478 | ||
479 | if (map->flags & MAP_ACTIVE) { | |
480 | if (speed == 0) | |
481 | speed = SOC_PCMCIA_IO_ACCESS; | |
482 | } else { | |
483 | speed = 0; | |
484 | } | |
485 | ||
486 | skt->spd_io[map->map] = speed; | |
487 | skt->ops->set_timing(skt); | |
488 | ||
489 | if (map->stop == 1) | |
490 | map->stop = PAGE_SIZE-1; | |
491 | ||
492 | map->stop -= map->start; | |
493 | map->stop += skt->socket.io_offset; | |
494 | map->start = skt->socket.io_offset; | |
495 | ||
496 | return 0; | |
497 | } | |
498 | ||
499 | ||
500 | /* | |
501 | * Implements the set_mem_map() operation for the in-kernel PCMCIA | |
502 | * service (formerly SS_SetMemMap in Card Services). We configure | |
503 | * the map speed as requested, but override the address ranges | |
504 | * supplied by Card Services. | |
505 | * | |
4846d017 | 506 | * Returns: 0 on success, -ERRNO on error |
1da177e4 | 507 | */ |
17b38ebb MRJ |
508 | static int soc_common_pcmcia_set_mem_map( |
509 | struct pcmcia_socket *sock, struct pccard_mem_map *map) | |
1da177e4 LT |
510 | { |
511 | struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); | |
512 | struct resource *res; | |
513 | unsigned short speed = map->speed; | |
514 | ||
515 | debug(skt, 2, "map %u speed %u card_start %08x\n", | |
516 | map->map, map->speed, map->card_start); | |
517 | debug(skt, 2, "flags: %s%s%s%s%s%s%s%s\n", | |
17b38ebb MRJ |
518 | (map->flags == 0) ? "<NONE>" : "", |
519 | (map->flags & MAP_ACTIVE) ? "ACTIVE " : "", | |
520 | (map->flags & MAP_16BIT) ? "16BIT " : "", | |
521 | (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "", | |
522 | (map->flags & MAP_0WS) ? "0WS " : "", | |
523 | (map->flags & MAP_WRPROT) ? "WRPROT " : "", | |
524 | (map->flags & MAP_ATTRIB) ? "ATTRIB " : "", | |
525 | (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : ""); | |
1da177e4 LT |
526 | |
527 | if (map->map >= MAX_WIN) | |
528 | return -EINVAL; | |
529 | ||
530 | if (map->flags & MAP_ACTIVE) { | |
531 | if (speed == 0) | |
532 | speed = 300; | |
533 | } else { | |
534 | speed = 0; | |
535 | } | |
536 | ||
537 | if (map->flags & MAP_ATTRIB) { | |
538 | res = &skt->res_attr; | |
539 | skt->spd_attr[map->map] = speed; | |
540 | skt->spd_mem[map->map] = 0; | |
541 | } else { | |
542 | res = &skt->res_mem; | |
543 | skt->spd_attr[map->map] = 0; | |
544 | skt->spd_mem[map->map] = speed; | |
545 | } | |
546 | ||
547 | skt->ops->set_timing(skt); | |
548 | ||
549 | map->static_start = res->start + map->card_start; | |
550 | ||
551 | return 0; | |
552 | } | |
553 | ||
554 | struct bittbl { | |
555 | unsigned int mask; | |
556 | const char *name; | |
557 | }; | |
558 | ||
559 | static struct bittbl status_bits[] = { | |
560 | { SS_WRPROT, "SS_WRPROT" }, | |
561 | { SS_BATDEAD, "SS_BATDEAD" }, | |
562 | { SS_BATWARN, "SS_BATWARN" }, | |
563 | { SS_READY, "SS_READY" }, | |
564 | { SS_DETECT, "SS_DETECT" }, | |
565 | { SS_POWERON, "SS_POWERON" }, | |
566 | { SS_STSCHG, "SS_STSCHG" }, | |
567 | { SS_3VCARD, "SS_3VCARD" }, | |
568 | { SS_XVCARD, "SS_XVCARD" }, | |
569 | }; | |
570 | ||
571 | static struct bittbl conf_bits[] = { | |
572 | { SS_PWR_AUTO, "SS_PWR_AUTO" }, | |
573 | { SS_IOCARD, "SS_IOCARD" }, | |
574 | { SS_RESET, "SS_RESET" }, | |
575 | { SS_DMA_MODE, "SS_DMA_MODE" }, | |
576 | { SS_SPKR_ENA, "SS_SPKR_ENA" }, | |
577 | { SS_OUTPUT_ENA, "SS_OUTPUT_ENA" }, | |
578 | }; | |
579 | ||
17b38ebb MRJ |
580 | static void dump_bits(char **p, const char *prefix, |
581 | unsigned int val, struct bittbl *bits, int sz) | |
1da177e4 LT |
582 | { |
583 | char *b = *p; | |
584 | int i; | |
585 | ||
586 | b += sprintf(b, "%-9s:", prefix); | |
587 | for (i = 0; i < sz; i++) | |
588 | if (val & bits[i].mask) | |
589 | b += sprintf(b, " %s", bits[i].name); | |
590 | *b++ = '\n'; | |
591 | *p = b; | |
592 | } | |
593 | ||
594 | /* | |
595 | * Implements the /sys/class/pcmcia_socket/??/status file. | |
596 | * | |
597 | * Returns: the number of characters added to the buffer | |
598 | */ | |
17b38ebb MRJ |
599 | static ssize_t show_status( |
600 | struct device *dev, struct device_attribute *attr, char *buf) | |
1da177e4 LT |
601 | { |
602 | struct soc_pcmcia_socket *skt = | |
87373318 | 603 | container_of(dev, struct soc_pcmcia_socket, socket.dev); |
1da177e4 LT |
604 | char *p = buf; |
605 | ||
17b38ebb | 606 | p += sprintf(p, "slot : %d\n", skt->nr); |
1da177e4 LT |
607 | |
608 | dump_bits(&p, "status", skt->status, | |
609 | status_bits, ARRAY_SIZE(status_bits)); | |
610 | dump_bits(&p, "csc_mask", skt->cs_state.csc_mask, | |
611 | status_bits, ARRAY_SIZE(status_bits)); | |
612 | dump_bits(&p, "cs_flags", skt->cs_state.flags, | |
613 | conf_bits, ARRAY_SIZE(conf_bits)); | |
614 | ||
17b38ebb MRJ |
615 | p += sprintf(p, "Vcc : %d\n", skt->cs_state.Vcc); |
616 | p += sprintf(p, "Vpp : %d\n", skt->cs_state.Vpp); | |
617 | p += sprintf(p, "IRQ : %d (%d)\n", skt->cs_state.io_irq, | |
66024db5 | 618 | skt->socket.pci_irq); |
1da177e4 | 619 | if (skt->ops->show_timing) |
17b38ebb | 620 | p += skt->ops->show_timing(skt, p); |
1da177e4 LT |
621 | |
622 | return p-buf; | |
623 | } | |
e4a3c3f0 | 624 | static DEVICE_ATTR(status, S_IRUGO, show_status, NULL); |
1da177e4 LT |
625 | |
626 | ||
627 | static struct pccard_operations soc_common_pcmcia_operations = { | |
628 | .init = soc_common_pcmcia_sock_init, | |
629 | .suspend = soc_common_pcmcia_suspend, | |
630 | .get_status = soc_common_pcmcia_get_status, | |
1da177e4 LT |
631 | .set_socket = soc_common_pcmcia_set_socket, |
632 | .set_io_map = soc_common_pcmcia_set_io_map, | |
633 | .set_mem_map = soc_common_pcmcia_set_mem_map, | |
634 | }; | |
635 | ||
636 | ||
097e296d | 637 | static LIST_HEAD(soc_pcmcia_sockets); |
23d077e2 | 638 | static DEFINE_MUTEX(soc_pcmcia_sockets_lock); |
1da177e4 | 639 | |
1da177e4 LT |
640 | #ifdef CONFIG_CPU_FREQ |
641 | static int | |
642 | soc_pcmcia_notifier(struct notifier_block *nb, unsigned long val, void *data) | |
643 | { | |
644 | struct soc_pcmcia_socket *skt; | |
645 | struct cpufreq_freqs *freqs = data; | |
646 | int ret = 0; | |
647 | ||
23d077e2 | 648 | mutex_lock(&soc_pcmcia_sockets_lock); |
1da177e4 | 649 | list_for_each_entry(skt, &soc_pcmcia_sockets, node) |
17b38ebb | 650 | if (skt->ops->frequency_change) |
1da177e4 | 651 | ret += skt->ops->frequency_change(skt, val, freqs); |
23d077e2 | 652 | mutex_unlock(&soc_pcmcia_sockets_lock); |
1da177e4 LT |
653 | |
654 | return ret; | |
655 | } | |
656 | ||
657 | static struct notifier_block soc_pcmcia_notifier_block = { | |
658 | .notifier_call = soc_pcmcia_notifier | |
659 | }; | |
660 | ||
661 | static int soc_pcmcia_cpufreq_register(void) | |
662 | { | |
663 | int ret; | |
664 | ||
665 | ret = cpufreq_register_notifier(&soc_pcmcia_notifier_block, | |
666 | CPUFREQ_TRANSITION_NOTIFIER); | |
667 | if (ret < 0) | |
668 | printk(KERN_ERR "Unable to register CPU frequency change " | |
669 | "notifier for PCMCIA (%d)\n", ret); | |
670 | return ret; | |
671 | } | |
0f767de6 | 672 | fs_initcall(soc_pcmcia_cpufreq_register); |
1da177e4 LT |
673 | |
674 | static void soc_pcmcia_cpufreq_unregister(void) | |
675 | { | |
17b38ebb MRJ |
676 | cpufreq_unregister_notifier(&soc_pcmcia_notifier_block, |
677 | CPUFREQ_TRANSITION_NOTIFIER); | |
1da177e4 | 678 | } |
0f767de6 | 679 | module_exit(soc_pcmcia_cpufreq_unregister); |
1da177e4 | 680 | |
1da177e4 LT |
681 | #endif |
682 | ||
e0d21178 RK |
683 | void soc_pcmcia_init_one(struct soc_pcmcia_socket *skt, |
684 | struct pcmcia_low_level *ops, struct device *dev) | |
685 | { | |
d9dc8787 RK |
686 | int i; |
687 | ||
e0d21178 RK |
688 | skt->ops = ops; |
689 | skt->socket.owner = ops->owner; | |
690 | skt->socket.dev.parent = dev; | |
691 | skt->socket.pci_irq = NO_IRQ; | |
d9dc8787 RK |
692 | |
693 | for (i = 0; i < ARRAY_SIZE(skt->stat); i++) | |
694 | skt->stat[i].gpio = -EINVAL; | |
e0d21178 RK |
695 | } |
696 | EXPORT_SYMBOL(soc_pcmcia_init_one); | |
697 | ||
097e296d | 698 | void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt) |
1da177e4 | 699 | { |
23d077e2 | 700 | mutex_lock(&soc_pcmcia_sockets_lock); |
097e296d | 701 | del_timer_sync(&skt->poll_timer); |
1da177e4 | 702 | |
097e296d | 703 | pcmcia_unregister_socket(&skt->socket); |
1da177e4 | 704 | |
d9dc8787 | 705 | soc_pcmcia_hw_shutdown(skt); |
1da177e4 | 706 | |
d9dc8787 | 707 | /* should not be required; violates some lowlevel drivers */ |
097e296d | 708 | soc_common_pcmcia_config_skt(skt, &dead_socket); |
1da177e4 | 709 | |
097e296d RKAL |
710 | list_del(&skt->node); |
711 | mutex_unlock(&soc_pcmcia_sockets_lock); | |
1da177e4 | 712 | |
097e296d RKAL |
713 | iounmap(skt->virt_io); |
714 | skt->virt_io = NULL; | |
715 | release_resource(&skt->res_attr); | |
716 | release_resource(&skt->res_mem); | |
717 | release_resource(&skt->res_io); | |
718 | release_resource(&skt->res_skt); | |
719 | } | |
720 | EXPORT_SYMBOL(soc_pcmcia_remove_one); | |
1da177e4 | 721 | |
097e296d RKAL |
722 | int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt) |
723 | { | |
724 | int ret; | |
1da177e4 | 725 | |
097e296d RKAL |
726 | init_timer(&skt->poll_timer); |
727 | skt->poll_timer.function = soc_common_pcmcia_poll_event; | |
728 | skt->poll_timer.data = (unsigned long)skt; | |
729 | skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD; | |
1da177e4 | 730 | |
097e296d RKAL |
731 | ret = request_resource(&iomem_resource, &skt->res_skt); |
732 | if (ret) | |
733 | goto out_err_1; | |
1da177e4 | 734 | |
097e296d RKAL |
735 | ret = request_resource(&skt->res_skt, &skt->res_io); |
736 | if (ret) | |
737 | goto out_err_2; | |
1da177e4 | 738 | |
097e296d RKAL |
739 | ret = request_resource(&skt->res_skt, &skt->res_mem); |
740 | if (ret) | |
741 | goto out_err_3; | |
1da177e4 | 742 | |
097e296d RKAL |
743 | ret = request_resource(&skt->res_skt, &skt->res_attr); |
744 | if (ret) | |
745 | goto out_err_4; | |
1da177e4 | 746 | |
097e296d RKAL |
747 | skt->virt_io = ioremap(skt->res_io.start, 0x10000); |
748 | if (skt->virt_io == NULL) { | |
749 | ret = -ENOMEM; | |
750 | goto out_err_5; | |
751 | } | |
1da177e4 | 752 | |
097e296d | 753 | mutex_lock(&soc_pcmcia_sockets_lock); |
1da177e4 | 754 | |
097e296d | 755 | list_add(&skt->node, &soc_pcmcia_sockets); |
1da177e4 | 756 | |
097e296d RKAL |
757 | /* |
758 | * We initialize default socket timing here, because | |
759 | * we are not guaranteed to see a SetIOMap operation at | |
760 | * runtime. | |
761 | */ | |
762 | skt->ops->set_timing(skt); | |
1da177e4 | 763 | |
d9dc8787 | 764 | ret = soc_pcmcia_hw_init(skt); |
097e296d RKAL |
765 | if (ret) |
766 | goto out_err_6; | |
1da177e4 | 767 | |
097e296d RKAL |
768 | skt->socket.ops = &soc_common_pcmcia_operations; |
769 | skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD; | |
770 | skt->socket.resource_ops = &pccard_static_ops; | |
771 | skt->socket.irq_mask = 0; | |
772 | skt->socket.map_size = PAGE_SIZE; | |
097e296d | 773 | skt->socket.io_offset = (unsigned long)skt->virt_io; |
1da177e4 | 774 | |
097e296d | 775 | skt->status = soc_common_pcmcia_skt_state(skt); |
1da177e4 | 776 | |
097e296d RKAL |
777 | ret = pcmcia_register_socket(&skt->socket); |
778 | if (ret) | |
779 | goto out_err_7; | |
780 | ||
781 | add_timer(&skt->poll_timer); | |
782 | ||
783 | mutex_unlock(&soc_pcmcia_sockets_lock); | |
784 | ||
785 | ret = device_create_file(&skt->socket.dev, &dev_attr_status); | |
786 | if (ret) | |
787 | goto out_err_8; | |
788 | ||
789 | return ret; | |
1da177e4 | 790 | |
632480ea | 791 | out_err_8: |
097e296d RKAL |
792 | mutex_lock(&soc_pcmcia_sockets_lock); |
793 | del_timer_sync(&skt->poll_timer); | |
794 | pcmcia_unregister_socket(&skt->socket); | |
1da177e4 LT |
795 | |
796 | out_err_7: | |
d9dc8787 | 797 | soc_pcmcia_hw_shutdown(skt); |
1da177e4 | 798 | out_err_6: |
097e296d RKAL |
799 | list_del(&skt->node); |
800 | mutex_unlock(&soc_pcmcia_sockets_lock); | |
801 | iounmap(skt->virt_io); | |
1da177e4 | 802 | out_err_5: |
097e296d | 803 | release_resource(&skt->res_attr); |
1da177e4 | 804 | out_err_4: |
097e296d | 805 | release_resource(&skt->res_mem); |
1da177e4 | 806 | out_err_3: |
097e296d | 807 | release_resource(&skt->res_io); |
1da177e4 | 808 | out_err_2: |
097e296d | 809 | release_resource(&skt->res_skt); |
1da177e4 | 810 | out_err_1: |
1da177e4 | 811 | |
1da177e4 LT |
812 | return ret; |
813 | } | |
097e296d | 814 | EXPORT_SYMBOL(soc_pcmcia_add_one); |
1da177e4 | 815 | |
0f767de6 RKAL |
816 | MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>"); |
817 | MODULE_DESCRIPTION("Linux PCMCIA Card Services: Common SoC support"); | |
818 | MODULE_LICENSE("Dual MPL/GPL"); |