Blame view
drivers/pcmcia/soc_common.c
23.1 KB
1da177e4c Linux-2.6.12-rc2 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 |
/*====================================================================== Common support code for the PCMCIA control functionality of integrated SOCs like the SA-11x0 and PXA2xx microprocessors. The contents of this file are subject to the Mozilla Public License Version 1.1 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.mozilla.org/MPL/ Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for the specific language governing rights and limitations under the License. The initial developer of the original code is John G. Dorsey <john+@cs.cmu.edu>. Portions created by John G. Dorsey are Copyright (C) 1999 John G. Dorsey. All Rights Reserved. Alternatively, the contents of this file may be used under the terms of the GNU Public License version 2 (the "GPL"), in which case the provisions of the GPL are applicable instead of the above. If you wish to allow the use of your version of this file only under the terms of the GPL and not to allow others to use your version of this file under the MPL, indicate your decision by deleting the provisions above and replace them with the notice and other provisions required by the GPL. If you do not delete the provisions above, a recipient may use your version of this file under either the MPL or the GPL. ======================================================================*/ |
17b38ebb6 ARM: 6457/1: pcmc... |
32 |
#include <linux/cpufreq.h> |
d9dc87876 PCMCIA: soc_commo... |
33 |
#include <linux/gpio.h> |
45ca7536d pcmcia: soc_commo... |
34 |
#include <linux/gpio/consumer.h> |
1da177e4c Linux-2.6.12-rc2 |
35 |
#include <linux/init.h> |
17b38ebb6 ARM: 6457/1: pcmc... |
36 37 38 |
#include <linux/interrupt.h> #include <linux/io.h> #include <linux/irq.h> |
1da177e4c Linux-2.6.12-rc2 |
39 |
#include <linux/kernel.h> |
1da177e4c Linux-2.6.12-rc2 |
40 |
#include <linux/mm.h> |
17b38ebb6 ARM: 6457/1: pcmc... |
41 42 |
#include <linux/module.h> #include <linux/moduleparam.h> |
23d077e28 drivers/pcmcia/so... |
43 |
#include <linux/mutex.h> |
ac61b6001 pcmcia: soc_commo... |
44 |
#include <linux/regulator/consumer.h> |
1da177e4c Linux-2.6.12-rc2 |
45 |
#include <linux/spinlock.h> |
17b38ebb6 ARM: 6457/1: pcmc... |
46 |
#include <linux/timer.h> |
1da177e4c Linux-2.6.12-rc2 |
47 |
|
a09e64fbc [ARM] Move includ... |
48 |
#include <mach/hardware.h> |
1da177e4c Linux-2.6.12-rc2 |
49 50 |
#include "soc_common.h" |
d9dc87876 PCMCIA: soc_commo... |
51 |
static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev); |
7d16b658b pcmcia: don't add... |
52 |
#ifdef CONFIG_PCMCIA_DEBUG |
1da177e4c Linux-2.6.12-rc2 |
53 54 55 56 57 58 59 |
static int pc_debug; module_param(pc_debug, int, 0644); void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func, int lvl, const char *fmt, ...) { |
106665d93 drivers/pcmcia/so... |
60 |
struct va_format vaf; |
1da177e4c Linux-2.6.12-rc2 |
61 62 |
va_list args; if (pc_debug > lvl) { |
1da177e4c Linux-2.6.12-rc2 |
63 |
va_start(args, fmt); |
106665d93 drivers/pcmcia/so... |
64 65 66 67 68 |
vaf.fmt = fmt; vaf.va = &args; printk(KERN_DEBUG "skt%u: %s: %pV", skt->nr, func, &vaf); |
1da177e4c Linux-2.6.12-rc2 |
69 70 71 |
va_end(args); } } |
b9f515e3e ARM: 6456/1: Fix ... |
72 |
EXPORT_SYMBOL(soc_pcmcia_debug); |
1da177e4c Linux-2.6.12-rc2 |
73 74 |
#endif |
17b38ebb6 ARM: 6457/1: pcmc... |
75 76 |
#define to_soc_pcmcia_socket(x) \ container_of(x, struct soc_pcmcia_socket, socket) |
1da177e4c Linux-2.6.12-rc2 |
77 |
|
ac61b6001 pcmcia: soc_commo... |
78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 |
int soc_pcmcia_regulator_set(struct soc_pcmcia_socket *skt, struct soc_pcmcia_regulator *r, int v) { bool on; int ret; if (!r->reg) return 0; on = v != 0; if (r->on == on) return 0; if (on) { ret = regulator_set_voltage(r->reg, v * 100000, v * 100000); if (ret) { int vout = regulator_get_voltage(r->reg) / 100000; dev_warn(&skt->socket.dev, "CS requested %s=%u.%uV, applying %u.%uV ", r == &skt->vcc ? "Vcc" : "Vpp", v / 10, v % 10, vout / 10, vout % 10); } ret = regulator_enable(r->reg); } else { |
75ed26878 pcmcia: fix retur... |
105 |
ret = regulator_disable(r->reg); |
ac61b6001 pcmcia: soc_commo... |
106 107 108 109 110 111 112 |
} if (ret == 0) r->on = on; return ret; } EXPORT_SYMBOL_GPL(soc_pcmcia_regulator_set); |
1da177e4c Linux-2.6.12-rc2 |
113 114 115 116 117 118 119 120 121 122 123 124 125 126 |
static unsigned short calc_speed(unsigned short *spds, int num, unsigned short dflt) { unsigned short speed = 0; int i; for (i = 0; i < num; i++) if (speed < spds[i]) speed = spds[i]; if (speed == 0) speed = dflt; return speed; } |
17b38ebb6 ARM: 6457/1: pcmc... |
127 128 |
void soc_common_pcmcia_get_timing(struct soc_pcmcia_socket *skt, struct soc_pcmcia_timing *timing) |
1da177e4c Linux-2.6.12-rc2 |
129 |
{ |
17b38ebb6 ARM: 6457/1: pcmc... |
130 131 132 133 134 135 |
timing->io = calc_speed(skt->spd_io, MAX_IO_WIN, SOC_PCMCIA_IO_ACCESS); timing->mem = calc_speed(skt->spd_mem, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS); timing->attr = calc_speed(skt->spd_attr, MAX_WIN, SOC_PCMCIA_3V_MEM_ACCESS); |
1da177e4c Linux-2.6.12-rc2 |
136 137 |
} EXPORT_SYMBOL(soc_common_pcmcia_get_timing); |
d9dc87876 PCMCIA: soc_commo... |
138 139 140 141 |
static void __soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt, unsigned int nr) { unsigned int i; |
59ecfefad pcmcia: soc_commo... |
142 |
for (i = 0; i < nr; i++) |
d9dc87876 PCMCIA: soc_commo... |
143 144 |
if (skt->stat[i].irq) free_irq(skt->stat[i].irq, skt); |
d9dc87876 PCMCIA: soc_commo... |
145 146 147 |
if (skt->ops->hw_shutdown) skt->ops->hw_shutdown(skt); |
0821c3bc5 ARM: 8245/1: pcmc... |
148 149 |
clk_disable_unprepare(skt->clk); |
d9dc87876 PCMCIA: soc_commo... |
150 151 152 153 154 155 |
} static void soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) { __soc_pcmcia_hw_shutdown(skt, ARRAY_SIZE(skt->stat)); } |
45ca7536d pcmcia: soc_commo... |
156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 |
int soc_pcmcia_request_gpiods(struct soc_pcmcia_socket *skt) { struct device *dev = skt->socket.dev.parent; struct gpio_desc *desc; int i; for (i = 0; i < ARRAY_SIZE(skt->stat); i++) { if (!skt->stat[i].name) continue; desc = devm_gpiod_get(dev, skt->stat[i].name, GPIOD_IN); if (IS_ERR(desc)) { dev_err(dev, "Failed to get GPIO for %s: %ld ", skt->stat[i].name, PTR_ERR(desc)); return PTR_ERR(desc); } skt->stat[i].desc = desc; } return 0; } EXPORT_SYMBOL_GPL(soc_pcmcia_request_gpiods); |
d9dc87876 PCMCIA: soc_commo... |
180 181 182 |
static int soc_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { int ret = 0, i; |
d3fdd7012 pcmcia: soc_commo... |
183 184 185 |
ret = clk_prepare_enable(skt->clk); if (ret) return ret; |
0821c3bc5 ARM: 8245/1: pcmc... |
186 |
|
d9dc87876 PCMCIA: soc_commo... |
187 188 |
if (skt->ops->hw_init) { ret = skt->ops->hw_init(skt); |
d3fdd7012 pcmcia: soc_commo... |
189 190 |
if (ret) { clk_disable_unprepare(skt->clk); |
d9dc87876 PCMCIA: soc_commo... |
191 |
return ret; |
d3fdd7012 pcmcia: soc_commo... |
192 |
} |
d9dc87876 PCMCIA: soc_commo... |
193 194 195 196 |
} for (i = 0; i < ARRAY_SIZE(skt->stat); i++) { if (gpio_is_valid(skt->stat[i].gpio)) { |
7bfe49785 pcmcia: soc_commo... |
197 198 199 200 201 |
unsigned long flags = GPIOF_IN; /* CD is active low by default */ if (i == SOC_STAT_CD) flags |= GPIOF_ACTIVE_LOW; |
59ecfefad pcmcia: soc_commo... |
202 |
ret = devm_gpio_request_one(skt->socket.dev.parent, |
7bfe49785 pcmcia: soc_commo... |
203 |
skt->stat[i].gpio, flags, |
59ecfefad pcmcia: soc_commo... |
204 |
skt->stat[i].name); |
d9dc87876 PCMCIA: soc_commo... |
205 206 207 208 |
if (ret) { __soc_pcmcia_hw_shutdown(skt, i); return ret; } |
45ca7536d pcmcia: soc_commo... |
209 210 |
skt->stat[i].desc = gpio_to_desc(skt->stat[i].gpio); } |
5805271d9 pcmcia: soc_commo... |
211 |
if (i < SOC_STAT_VS1 && skt->stat[i].desc) { |
45ca7536d pcmcia: soc_commo... |
212 |
int irq = gpiod_to_irq(skt->stat[i].desc); |
d9dc87876 PCMCIA: soc_commo... |
213 |
|
a49411912 pcmcia: soc_commo... |
214 215 216 217 218 219 |
if (irq > 0) { if (i == SOC_STAT_RDY) skt->socket.pci_irq = irq; else skt->stat[i].irq = irq; } |
d9dc87876 PCMCIA: soc_commo... |
220 221 222 223 224 225 226 227 |
} if (skt->stat[i].irq) { ret = request_irq(skt->stat[i].irq, soc_common_pcmcia_interrupt, IRQF_TRIGGER_NONE, skt->stat[i].name, skt); if (ret) { |
d9dc87876 PCMCIA: soc_commo... |
228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 |
__soc_pcmcia_hw_shutdown(skt, i); return ret; } } } return ret; } static void soc_pcmcia_hw_enable(struct soc_pcmcia_socket *skt) { int i; for (i = 0; i < ARRAY_SIZE(skt->stat); i++) if (skt->stat[i].irq) { irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_EDGE_RISING); irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_EDGE_BOTH); } } static void soc_pcmcia_hw_disable(struct soc_pcmcia_socket *skt) { int i; for (i = 0; i < ARRAY_SIZE(skt->stat); i++) if (skt->stat[i].irq) irq_set_irq_type(skt->stat[i].irq, IRQ_TYPE_NONE); } |
a1d050026 pcmcia: soc_commo... |
256 257 258 259 260 261 262 263 264 265 266 |
/* * The CF 3.0 specification says that cards tie VS1 to ground and leave * VS2 open. Many implementations do not wire up the VS signals, so we * provide hard-coded values as per the CF 3.0 spec. */ void soc_common_cf_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { state->vs_3v = 1; } EXPORT_SYMBOL_GPL(soc_common_cf_socket_state); |
1da177e4c Linux-2.6.12-rc2 |
267 268 269 270 271 272 |
static unsigned int soc_common_pcmcia_skt_state(struct soc_pcmcia_socket *skt) { struct pcmcia_state state; unsigned int stat; memset(&state, 0, sizeof(struct pcmcia_state)); |
d9dc87876 PCMCIA: soc_commo... |
273 274 275 |
/* Make battery voltage state report 'good' */ state.bvd1 = 1; state.bvd2 = 1; |
45ca7536d pcmcia: soc_commo... |
276 |
if (skt->stat[SOC_STAT_CD].desc) |
7bfe49785 pcmcia: soc_commo... |
277 |
state.detect = !!gpiod_get_value(skt->stat[SOC_STAT_CD].desc); |
45ca7536d pcmcia: soc_commo... |
278 279 280 281 282 283 |
if (skt->stat[SOC_STAT_RDY].desc) state.ready = !!gpiod_get_value(skt->stat[SOC_STAT_RDY].desc); if (skt->stat[SOC_STAT_BVD1].desc) state.bvd1 = !!gpiod_get_value(skt->stat[SOC_STAT_BVD1].desc); if (skt->stat[SOC_STAT_BVD2].desc) state.bvd2 = !!gpiod_get_value(skt->stat[SOC_STAT_BVD2].desc); |
5805271d9 pcmcia: soc_commo... |
284 285 286 287 |
if (skt->stat[SOC_STAT_VS1].desc) state.vs_3v = !!gpiod_get_value(skt->stat[SOC_STAT_VS1].desc); if (skt->stat[SOC_STAT_VS2].desc) state.vs_Xv = !!gpiod_get_value(skt->stat[SOC_STAT_VS2].desc); |
d9dc87876 PCMCIA: soc_commo... |
288 |
|
1da177e4c Linux-2.6.12-rc2 |
289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 |
skt->ops->socket_state(skt, &state); stat = state.detect ? SS_DETECT : 0; stat |= state.ready ? SS_READY : 0; stat |= state.wrprot ? SS_WRPROT : 0; stat |= state.vs_3v ? SS_3VCARD : 0; stat |= state.vs_Xv ? SS_XVCARD : 0; /* The power status of individual sockets is not available * explicitly from the hardware, so we just remember the state * and regurgitate it upon request: */ stat |= skt->cs_state.Vcc ? SS_POWERON : 0; if (skt->cs_state.flags & SS_IOCARD) |
a466ebd2f pcmcia: soc_commo... |
304 |
stat |= state.bvd1 ? 0 : SS_STSCHG; |
1da177e4c Linux-2.6.12-rc2 |
305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 |
else { if (state.bvd1 == 0) stat |= SS_BATDEAD; else if (state.bvd2 == 0) stat |= SS_BATWARN; } return stat; } /* * soc_common_pcmcia_config_skt * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ * * Convert PCMCIA socket state to our socket configure structure. */ |
17b38ebb6 ARM: 6457/1: pcmc... |
320 321 |
static int soc_common_pcmcia_config_skt( struct soc_pcmcia_socket *skt, socket_state_t *state) |
1da177e4c Linux-2.6.12-rc2 |
322 323 324 325 |
{ int ret; ret = skt->ops->configure_socket(skt, state); |
6ac95d821 pcmcia: soc_commo... |
326 327 328 329 330 331 332 333 |
if (ret < 0) { pr_err("soc_common_pcmcia: unable to configure socket %d ", skt->nr); /* restore the previous state */ WARN_ON(skt->ops->configure_socket(skt, &skt->cs_state)); return ret; } |
1da177e4c Linux-2.6.12-rc2 |
334 |
if (ret == 0) { |
535e0abc0 pcmcia: soc_commo... |
335 |
struct gpio_desc *descs[2]; |
b9762bebc gpiolib: Pass bit... |
336 337 |
DECLARE_BITMAP(values, 2); int n = 0; |
535e0abc0 pcmcia: soc_commo... |
338 339 340 |
if (skt->gpio_reset) { descs[n] = skt->gpio_reset; |
b9762bebc gpiolib: Pass bit... |
341 |
__assign_bit(n++, values, state->flags & SS_RESET); |
535e0abc0 pcmcia: soc_commo... |
342 343 344 |
} if (skt->gpio_bus_enable) { descs[n] = skt->gpio_bus_enable; |
b9762bebc gpiolib: Pass bit... |
345 |
__assign_bit(n++, values, state->flags & SS_OUTPUT_ENA); |
535e0abc0 pcmcia: soc_commo... |
346 347 348 |
} if (n) |
77588c14a gpiolib: Pass arr... |
349 |
gpiod_set_array_value_cansleep(n, descs, NULL, values); |
535e0abc0 pcmcia: soc_commo... |
350 |
|
1da177e4c Linux-2.6.12-rc2 |
351 352 353 354 355 356 |
/* * This really needs a better solution. The IRQ * may or may not be claimed by the driver. */ if (skt->irq_state != 1 && state->io_irq) { skt->irq_state = 1; |
dced35aeb drivers: Final ir... |
357 358 |
irq_set_irq_type(skt->socket.pci_irq, IRQ_TYPE_EDGE_FALLING); |
1da177e4c Linux-2.6.12-rc2 |
359 360 |
} else if (skt->irq_state == 1 && state->io_irq == 0) { skt->irq_state = 0; |
dced35aeb drivers: Final ir... |
361 |
irq_set_irq_type(skt->socket.pci_irq, IRQ_TYPE_NONE); |
1da177e4c Linux-2.6.12-rc2 |
362 363 364 365 |
} skt->cs_state = *state; } |
1da177e4c Linux-2.6.12-rc2 |
366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 |
return ret; } /* soc_common_pcmcia_sock_init() * ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ * * (Re-)Initialise the socket, turning on status interrupts * and PCMCIA bus. This must wait for power to stabilise * so that the card status signals report correctly. * * Returns: 0 */ static int soc_common_pcmcia_sock_init(struct pcmcia_socket *sock) { struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); debug(skt, 2, "initializing socket "); |
a747ce835 drivers:pcmcia:so... |
384 385 |
if (skt->ops->socket_init) skt->ops->socket_init(skt); |
d9dc87876 PCMCIA: soc_commo... |
386 |
soc_pcmcia_hw_enable(skt); |
1da177e4c Linux-2.6.12-rc2 |
387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 |
return 0; } /* * soc_common_pcmcia_suspend() * ^^^^^^^^^^^^^^^^^^^^^^^^^^^ * * Remove power on the socket, disable IRQs from the card. * Turn off status interrupts, and disable the PCMCIA bus. * * Returns: 0 */ static int soc_common_pcmcia_suspend(struct pcmcia_socket *sock) { struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); debug(skt, 2, "suspending socket "); |
d9dc87876 PCMCIA: soc_commo... |
406 |
soc_pcmcia_hw_disable(skt); |
a747ce835 drivers:pcmcia:so... |
407 408 |
if (skt->ops->socket_suspend) skt->ops->socket_suspend(skt); |
1da177e4c Linux-2.6.12-rc2 |
409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 |
return 0; } static DEFINE_SPINLOCK(status_lock); static void soc_common_check_status(struct soc_pcmcia_socket *skt) { unsigned int events; debug(skt, 4, "entering PCMCIA monitoring thread "); do { unsigned int status; unsigned long flags; status = soc_common_pcmcia_skt_state(skt); spin_lock_irqsave(&status_lock, flags); events = (status ^ skt->status) & skt->cs_state.csc_mask; skt->status = status; spin_unlock_irqrestore(&status_lock, flags); debug(skt, 4, "events: %s%s%s%s%s%s ", events == 0 ? "<NONE>" : "", events & SS_DETECT ? "DETECT " : "", events & SS_READY ? "READY " : "", events & SS_BATDEAD ? "BATDEAD " : "", events & SS_BATWARN ? "BATWARN " : "", events & SS_STSCHG ? "STSCHG " : ""); if (events) pcmcia_parse_events(&skt->socket, events); } while (events); } /* Let's poll for events in addition to IRQs since IRQ only is unreliable... */ |
41760d0e0 drivers/pcmcia: C... |
448 |
static void soc_common_pcmcia_poll_event(struct timer_list *t) |
1da177e4c Linux-2.6.12-rc2 |
449 |
{ |
41760d0e0 drivers/pcmcia: C... |
450 |
struct soc_pcmcia_socket *skt = from_timer(skt, t, poll_timer); |
1da177e4c Linux-2.6.12-rc2 |
451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 |
debug(skt, 4, "polling for events "); mod_timer(&skt->poll_timer, jiffies + SOC_PCMCIA_POLL_PERIOD); soc_common_check_status(skt); } /* * Service routine for socket driver interrupts (requested by the * low-level PCMCIA init() operation via soc_common_pcmcia_thread()). * The actual interrupt-servicing work is performed by * soc_common_pcmcia_thread(), largely because the Card Services event- * handling code performs scheduling operations which cannot be * executed from within an interrupt context. */ |
7d12e780e IRQ: Maintain reg... |
468 |
static irqreturn_t soc_common_pcmcia_interrupt(int irq, void *dev) |
1da177e4c Linux-2.6.12-rc2 |
469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 |
{ struct soc_pcmcia_socket *skt = dev; debug(skt, 3, "servicing IRQ %d ", irq); soc_common_check_status(skt); return IRQ_HANDLED; } /* * Implements the get_status() operation for the in-kernel PCMCIA * service (formerly SS_GetStatus in Card Services). Essentially just * fills in bits in `status' according to internal driver state or * the value of the voltage detect chipselect register. * * As a debugging note, during card startup, the PCMCIA core issues * three set_socket() commands in a row the first with RESET deasserted, * the second with RESET asserted, and the last with RESET deasserted * again. Following the third set_socket(), a get_status() command will * be issued. The kernel is looking for the SS_READY flag (see * setup_socket(), reset_socket(), and unreset_socket() in cs.c). * * Returns: 0 */ static int soc_common_pcmcia_get_status(struct pcmcia_socket *sock, unsigned int *status) { struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); skt->status = soc_common_pcmcia_skt_state(skt); *status = skt->status; return 0; } /* |
1da177e4c Linux-2.6.12-rc2 |
509 510 511 512 513 |
* Implements the set_socket() operation for the in-kernel PCMCIA * service (formerly SS_SetSocket in Card Services). We more or * less punt all of this work and let the kernel handle the details * of power configuration, reset, &c. We also record the value of * `state' in order to regurgitate it to the PCMCIA core later. |
1da177e4c Linux-2.6.12-rc2 |
514 |
*/ |
17b38ebb6 ARM: 6457/1: pcmc... |
515 516 |
static int soc_common_pcmcia_set_socket( struct pcmcia_socket *sock, socket_state_t *state) |
1da177e4c Linux-2.6.12-rc2 |
517 518 |
{ struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); |
17b38ebb6 ARM: 6457/1: pcmc... |
519 520 521 522 523 524 525 526 527 528 529 530 531 532 |
debug(skt, 2, "mask: %s%s%s%s%s%s flags: %s%s%s%s%s%s Vcc %d Vpp %d irq %d ", (state->csc_mask == 0) ? "<NONE> " : "", (state->csc_mask & SS_DETECT) ? "DETECT " : "", (state->csc_mask & SS_READY) ? "READY " : "", (state->csc_mask & SS_BATDEAD) ? "BATDEAD " : "", (state->csc_mask & SS_BATWARN) ? "BATWARN " : "", (state->csc_mask & SS_STSCHG) ? "STSCHG " : "", (state->flags == 0) ? "<NONE> " : "", (state->flags & SS_PWR_AUTO) ? "PWR_AUTO " : "", (state->flags & SS_IOCARD) ? "IOCARD " : "", (state->flags & SS_RESET) ? "RESET " : "", (state->flags & SS_SPKR_ENA) ? "SPKR_ENA " : "", (state->flags & SS_OUTPUT_ENA) ? "OUTPUT_ENA " : "", |
1da177e4c Linux-2.6.12-rc2 |
533 534 535 536 537 538 539 540 541 542 543 544 545 546 |
state->Vcc, state->Vpp, state->io_irq); return soc_common_pcmcia_config_skt(skt, state); } /* * Implements the set_io_map() operation for the in-kernel PCMCIA * service (formerly SS_SetIOMap in Card Services). We configure * the map speed as requested, but override the address ranges * supplied by Card Services. * * Returns: 0 on success, -1 on error */ |
17b38ebb6 ARM: 6457/1: pcmc... |
547 548 |
static int soc_common_pcmcia_set_io_map( struct pcmcia_socket *sock, struct pccard_io_map *map) |
1da177e4c Linux-2.6.12-rc2 |
549 550 551 |
{ struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); unsigned short speed = map->speed; |
5f784336d pcmcia: Fix possi... |
552 553 554 555 |
debug(skt, 2, "map %u speed %u start 0x%08llx stop 0x%08llx ", map->map, map->speed, (unsigned long long)map->start, (unsigned long long)map->stop); |
1da177e4c Linux-2.6.12-rc2 |
556 557 |
debug(skt, 2, "flags: %s%s%s%s%s%s%s%s ", |
17b38ebb6 ARM: 6457/1: pcmc... |
558 559 560 561 562 563 564 565 |
(map->flags == 0) ? "<NONE>" : "", (map->flags & MAP_ACTIVE) ? "ACTIVE " : "", (map->flags & MAP_16BIT) ? "16BIT " : "", (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "", (map->flags & MAP_0WS) ? "0WS " : "", (map->flags & MAP_WRPROT) ? "WRPROT " : "", (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : "", (map->flags & MAP_PREFETCH) ? "PREFETCH " : ""); |
1da177e4c Linux-2.6.12-rc2 |
566 567 |
if (map->map >= MAX_IO_WIN) { |
2e11cb4c5 pcmcia: replace r... |
568 569 |
printk(KERN_ERR "%s(): map (%d) out of range ", __func__, |
1da177e4c Linux-2.6.12-rc2 |
570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 |
map->map); return -1; } if (map->flags & MAP_ACTIVE) { if (speed == 0) speed = SOC_PCMCIA_IO_ACCESS; } else { speed = 0; } skt->spd_io[map->map] = speed; skt->ops->set_timing(skt); if (map->stop == 1) map->stop = PAGE_SIZE-1; map->stop -= map->start; map->stop += skt->socket.io_offset; map->start = skt->socket.io_offset; return 0; } /* * Implements the set_mem_map() operation for the in-kernel PCMCIA * service (formerly SS_SetMemMap in Card Services). We configure * the map speed as requested, but override the address ranges * supplied by Card Services. * |
4846d0172 [PATCH] zaurus: f... |
601 |
* Returns: 0 on success, -ERRNO on error |
1da177e4c Linux-2.6.12-rc2 |
602 |
*/ |
17b38ebb6 ARM: 6457/1: pcmc... |
603 604 |
static int soc_common_pcmcia_set_mem_map( struct pcmcia_socket *sock, struct pccard_mem_map *map) |
1da177e4c Linux-2.6.12-rc2 |
605 606 607 608 609 610 611 612 613 614 |
{ struct soc_pcmcia_socket *skt = to_soc_pcmcia_socket(sock); struct resource *res; unsigned short speed = map->speed; debug(skt, 2, "map %u speed %u card_start %08x ", map->map, map->speed, map->card_start); debug(skt, 2, "flags: %s%s%s%s%s%s%s%s ", |
17b38ebb6 ARM: 6457/1: pcmc... |
615 616 617 618 619 620 621 622 |
(map->flags == 0) ? "<NONE>" : "", (map->flags & MAP_ACTIVE) ? "ACTIVE " : "", (map->flags & MAP_16BIT) ? "16BIT " : "", (map->flags & MAP_AUTOSZ) ? "AUTOSZ " : "", (map->flags & MAP_0WS) ? "0WS " : "", (map->flags & MAP_WRPROT) ? "WRPROT " : "", (map->flags & MAP_ATTRIB) ? "ATTRIB " : "", (map->flags & MAP_USE_WAIT) ? "USE_WAIT " : ""); |
1da177e4c Linux-2.6.12-rc2 |
623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 |
if (map->map >= MAX_WIN) return -EINVAL; if (map->flags & MAP_ACTIVE) { if (speed == 0) speed = 300; } else { speed = 0; } if (map->flags & MAP_ATTRIB) { res = &skt->res_attr; skt->spd_attr[map->map] = speed; skt->spd_mem[map->map] = 0; } else { res = &skt->res_mem; skt->spd_attr[map->map] = 0; skt->spd_mem[map->map] = speed; } skt->ops->set_timing(skt); map->static_start = res->start + map->card_start; return 0; } struct bittbl { unsigned int mask; const char *name; }; static struct bittbl status_bits[] = { { SS_WRPROT, "SS_WRPROT" }, { SS_BATDEAD, "SS_BATDEAD" }, { SS_BATWARN, "SS_BATWARN" }, { SS_READY, "SS_READY" }, { SS_DETECT, "SS_DETECT" }, { SS_POWERON, "SS_POWERON" }, { SS_STSCHG, "SS_STSCHG" }, { SS_3VCARD, "SS_3VCARD" }, { SS_XVCARD, "SS_XVCARD" }, }; static struct bittbl conf_bits[] = { { SS_PWR_AUTO, "SS_PWR_AUTO" }, { SS_IOCARD, "SS_IOCARD" }, { SS_RESET, "SS_RESET" }, { SS_DMA_MODE, "SS_DMA_MODE" }, { SS_SPKR_ENA, "SS_SPKR_ENA" }, { SS_OUTPUT_ENA, "SS_OUTPUT_ENA" }, }; |
17b38ebb6 ARM: 6457/1: pcmc... |
676 677 |
static void dump_bits(char **p, const char *prefix, unsigned int val, struct bittbl *bits, int sz) |
1da177e4c Linux-2.6.12-rc2 |
678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 |
{ char *b = *p; int i; b += sprintf(b, "%-9s:", prefix); for (i = 0; i < sz; i++) if (val & bits[i].mask) b += sprintf(b, " %s", bits[i].name); *b++ = ' '; *p = b; } /* * Implements the /sys/class/pcmcia_socket/??/status file. * * Returns: the number of characters added to the buffer */ |
17b38ebb6 ARM: 6457/1: pcmc... |
696 697 |
static ssize_t show_status( struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
698 699 |
{ struct soc_pcmcia_socket *skt = |
873733188 Driver core: conv... |
700 |
container_of(dev, struct soc_pcmcia_socket, socket.dev); |
1da177e4c Linux-2.6.12-rc2 |
701 |
char *p = buf; |
17b38ebb6 ARM: 6457/1: pcmc... |
702 703 |
p += sprintf(p, "slot : %d ", skt->nr); |
1da177e4c Linux-2.6.12-rc2 |
704 705 706 707 708 709 710 |
dump_bits(&p, "status", skt->status, status_bits, ARRAY_SIZE(status_bits)); dump_bits(&p, "csc_mask", skt->cs_state.csc_mask, status_bits, ARRAY_SIZE(status_bits)); dump_bits(&p, "cs_flags", skt->cs_state.flags, conf_bits, ARRAY_SIZE(conf_bits)); |
17b38ebb6 ARM: 6457/1: pcmc... |
711 712 713 714 715 716 |
p += sprintf(p, "Vcc : %d ", skt->cs_state.Vcc); p += sprintf(p, "Vpp : %d ", skt->cs_state.Vpp); p += sprintf(p, "IRQ : %d (%d) ", skt->cs_state.io_irq, |
66024db57 PCMCIA: stop dupl... |
717 |
skt->socket.pci_irq); |
1da177e4c Linux-2.6.12-rc2 |
718 |
if (skt->ops->show_timing) |
17b38ebb6 ARM: 6457/1: pcmc... |
719 |
p += skt->ops->show_timing(skt, p); |
1da177e4c Linux-2.6.12-rc2 |
720 721 722 |
return p-buf; } |
e4a3c3f09 pcmcia: some clas... |
723 |
static DEVICE_ATTR(status, S_IRUGO, show_status, NULL); |
1da177e4c Linux-2.6.12-rc2 |
724 725 726 727 728 729 |
static struct pccard_operations soc_common_pcmcia_operations = { .init = soc_common_pcmcia_sock_init, .suspend = soc_common_pcmcia_suspend, .get_status = soc_common_pcmcia_get_status, |
1da177e4c Linux-2.6.12-rc2 |
730 731 732 733 |
.set_socket = soc_common_pcmcia_set_socket, .set_io_map = soc_common_pcmcia_set_io_map, .set_mem_map = soc_common_pcmcia_set_mem_map, }; |
1da177e4c Linux-2.6.12-rc2 |
734 |
#ifdef CONFIG_CPU_FREQ |
fb8c9959a pcmcia: soc_commo... |
735 736 |
static int soc_common_pcmcia_cpufreq_nb(struct notifier_block *nb, unsigned long val, void *data) |
1da177e4c Linux-2.6.12-rc2 |
737 |
{ |
fb8c9959a pcmcia: soc_commo... |
738 |
struct soc_pcmcia_socket *skt = container_of(nb, struct soc_pcmcia_socket, cpufreq_nb); |
1da177e4c Linux-2.6.12-rc2 |
739 |
struct cpufreq_freqs *freqs = data; |
1da177e4c Linux-2.6.12-rc2 |
740 |
|
fb8c9959a pcmcia: soc_commo... |
741 |
return skt->ops->frequency_change(skt, val, freqs); |
1da177e4c Linux-2.6.12-rc2 |
742 |
} |
1da177e4c Linux-2.6.12-rc2 |
743 |
#endif |
e0d21178c PCMCIA: soc_commo... |
744 |
void soc_pcmcia_init_one(struct soc_pcmcia_socket *skt, |
c8f9ce556 pcmcia: soc_commo... |
745 |
const struct pcmcia_low_level *ops, struct device *dev) |
e0d21178c PCMCIA: soc_commo... |
746 |
{ |
d9dc87876 PCMCIA: soc_commo... |
747 |
int i; |
e0d21178c PCMCIA: soc_commo... |
748 749 750 751 |
skt->ops = ops; skt->socket.owner = ops->owner; skt->socket.dev.parent = dev; skt->socket.pci_irq = NO_IRQ; |
d9dc87876 PCMCIA: soc_commo... |
752 753 754 |
for (i = 0; i < ARRAY_SIZE(skt->stat); i++) skt->stat[i].gpio = -EINVAL; |
e0d21178c PCMCIA: soc_commo... |
755 756 |
} EXPORT_SYMBOL(soc_pcmcia_init_one); |
097e296d6 PCMCIA: soc_commo... |
757 |
void soc_pcmcia_remove_one(struct soc_pcmcia_socket *skt) |
1da177e4c Linux-2.6.12-rc2 |
758 |
{ |
097e296d6 PCMCIA: soc_commo... |
759 |
del_timer_sync(&skt->poll_timer); |
1da177e4c Linux-2.6.12-rc2 |
760 |
|
097e296d6 PCMCIA: soc_commo... |
761 |
pcmcia_unregister_socket(&skt->socket); |
1da177e4c Linux-2.6.12-rc2 |
762 |
|
fb8c9959a pcmcia: soc_commo... |
763 764 765 766 767 |
#ifdef CONFIG_CPU_FREQ if (skt->ops->frequency_change) cpufreq_unregister_notifier(&skt->cpufreq_nb, CPUFREQ_TRANSITION_NOTIFIER); #endif |
d9dc87876 PCMCIA: soc_commo... |
768 |
soc_pcmcia_hw_shutdown(skt); |
1da177e4c Linux-2.6.12-rc2 |
769 |
|
d9dc87876 PCMCIA: soc_commo... |
770 |
/* should not be required; violates some lowlevel drivers */ |
097e296d6 PCMCIA: soc_commo... |
771 |
soc_common_pcmcia_config_skt(skt, &dead_socket); |
1da177e4c Linux-2.6.12-rc2 |
772 |
|
097e296d6 PCMCIA: soc_commo... |
773 774 775 776 777 778 779 780 |
iounmap(skt->virt_io); skt->virt_io = NULL; release_resource(&skt->res_attr); release_resource(&skt->res_mem); release_resource(&skt->res_io); release_resource(&skt->res_skt); } EXPORT_SYMBOL(soc_pcmcia_remove_one); |
1da177e4c Linux-2.6.12-rc2 |
781 |
|
097e296d6 PCMCIA: soc_commo... |
782 783 784 |
int soc_pcmcia_add_one(struct soc_pcmcia_socket *skt) { int ret; |
1da177e4c Linux-2.6.12-rc2 |
785 |
|
6ac95d821 pcmcia: soc_commo... |
786 |
skt->cs_state = dead_socket; |
41760d0e0 drivers/pcmcia: C... |
787 |
timer_setup(&skt->poll_timer, soc_common_pcmcia_poll_event, 0); |
097e296d6 PCMCIA: soc_commo... |
788 |
skt->poll_timer.expires = jiffies + SOC_PCMCIA_POLL_PERIOD; |
1da177e4c Linux-2.6.12-rc2 |
789 |
|
097e296d6 PCMCIA: soc_commo... |
790 791 792 |
ret = request_resource(&iomem_resource, &skt->res_skt); if (ret) goto out_err_1; |
1da177e4c Linux-2.6.12-rc2 |
793 |
|
097e296d6 PCMCIA: soc_commo... |
794 795 796 |
ret = request_resource(&skt->res_skt, &skt->res_io); if (ret) goto out_err_2; |
1da177e4c Linux-2.6.12-rc2 |
797 |
|
097e296d6 PCMCIA: soc_commo... |
798 799 800 |
ret = request_resource(&skt->res_skt, &skt->res_mem); if (ret) goto out_err_3; |
1da177e4c Linux-2.6.12-rc2 |
801 |
|
097e296d6 PCMCIA: soc_commo... |
802 803 804 |
ret = request_resource(&skt->res_skt, &skt->res_attr); if (ret) goto out_err_4; |
1da177e4c Linux-2.6.12-rc2 |
805 |
|
097e296d6 PCMCIA: soc_commo... |
806 807 808 809 810 |
skt->virt_io = ioremap(skt->res_io.start, 0x10000); if (skt->virt_io == NULL) { ret = -ENOMEM; goto out_err_5; } |
1da177e4c Linux-2.6.12-rc2 |
811 |
|
097e296d6 PCMCIA: soc_commo... |
812 813 814 815 816 817 |
/* * We initialize default socket timing here, because * we are not guaranteed to see a SetIOMap operation at * runtime. */ skt->ops->set_timing(skt); |
1da177e4c Linux-2.6.12-rc2 |
818 |
|
d9dc87876 PCMCIA: soc_commo... |
819 |
ret = soc_pcmcia_hw_init(skt); |
097e296d6 PCMCIA: soc_commo... |
820 821 |
if (ret) goto out_err_6; |
1da177e4c Linux-2.6.12-rc2 |
822 |
|
097e296d6 PCMCIA: soc_commo... |
823 824 825 826 827 |
skt->socket.ops = &soc_common_pcmcia_operations; skt->socket.features = SS_CAP_STATIC_MAP|SS_CAP_PCCARD; skt->socket.resource_ops = &pccard_static_ops; skt->socket.irq_mask = 0; skt->socket.map_size = PAGE_SIZE; |
097e296d6 PCMCIA: soc_commo... |
828 |
skt->socket.io_offset = (unsigned long)skt->virt_io; |
1da177e4c Linux-2.6.12-rc2 |
829 |
|
097e296d6 PCMCIA: soc_commo... |
830 |
skt->status = soc_common_pcmcia_skt_state(skt); |
1da177e4c Linux-2.6.12-rc2 |
831 |
|
fb8c9959a pcmcia: soc_commo... |
832 833 834 835 836 837 838 839 840 841 842 843 844 |
#ifdef CONFIG_CPU_FREQ if (skt->ops->frequency_change) { skt->cpufreq_nb.notifier_call = soc_common_pcmcia_cpufreq_nb; ret = cpufreq_register_notifier(&skt->cpufreq_nb, CPUFREQ_TRANSITION_NOTIFIER); if (ret < 0) dev_err(skt->socket.dev.parent, "unable to register CPU frequency change notifier for PCMCIA (%d) ", ret); } #endif |
097e296d6 PCMCIA: soc_commo... |
845 846 847 |
ret = pcmcia_register_socket(&skt->socket); if (ret) goto out_err_7; |
097e296d6 PCMCIA: soc_commo... |
848 849 850 851 852 |
ret = device_create_file(&skt->socket.dev, &dev_attr_status); if (ret) goto out_err_8; return ret; |
1da177e4c Linux-2.6.12-rc2 |
853 |
|
632480ea6 [ARM] 5245/1: Fix... |
854 |
out_err_8: |
097e296d6 PCMCIA: soc_commo... |
855 856 |
del_timer_sync(&skt->poll_timer); pcmcia_unregister_socket(&skt->socket); |
1da177e4c Linux-2.6.12-rc2 |
857 858 |
out_err_7: |
d9dc87876 PCMCIA: soc_commo... |
859 |
soc_pcmcia_hw_shutdown(skt); |
1da177e4c Linux-2.6.12-rc2 |
860 |
out_err_6: |
097e296d6 PCMCIA: soc_commo... |
861 |
iounmap(skt->virt_io); |
1da177e4c Linux-2.6.12-rc2 |
862 |
out_err_5: |
097e296d6 PCMCIA: soc_commo... |
863 |
release_resource(&skt->res_attr); |
1da177e4c Linux-2.6.12-rc2 |
864 |
out_err_4: |
097e296d6 PCMCIA: soc_commo... |
865 |
release_resource(&skt->res_mem); |
1da177e4c Linux-2.6.12-rc2 |
866 |
out_err_3: |
097e296d6 PCMCIA: soc_commo... |
867 |
release_resource(&skt->res_io); |
1da177e4c Linux-2.6.12-rc2 |
868 |
out_err_2: |
097e296d6 PCMCIA: soc_commo... |
869 |
release_resource(&skt->res_skt); |
1da177e4c Linux-2.6.12-rc2 |
870 |
out_err_1: |
1da177e4c Linux-2.6.12-rc2 |
871 |
|
1da177e4c Linux-2.6.12-rc2 |
872 873 |
return ret; } |
097e296d6 PCMCIA: soc_commo... |
874 |
EXPORT_SYMBOL(soc_pcmcia_add_one); |
1da177e4c Linux-2.6.12-rc2 |
875 |
|
0f767de6a PCMCIA: soc_commo... |
876 877 878 |
MODULE_AUTHOR("John Dorsey <john+@cs.cmu.edu>"); MODULE_DESCRIPTION("Linux PCMCIA Card Services: Common SoC support"); MODULE_LICENSE("Dual MPL/GPL"); |