Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* APM emulation layer for PowerMac |
| 2 | * |
| 3 | * Copyright 2001 Benjamin Herrenschmidt (benh@kernel.crashing.org) |
| 4 | * |
| 5 | * Lots of code inherited from apm.c, see appropriate notice in |
| 6 | * arch/i386/kernel/apm.c |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2, or (at your option) any |
| 11 | * later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * General Public License for more details. |
| 17 | * |
| 18 | * |
| 19 | */ |
| 20 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | #include <linux/module.h> |
| 22 | |
| 23 | #include <linux/poll.h> |
| 24 | #include <linux/types.h> |
| 25 | #include <linux/stddef.h> |
| 26 | #include <linux/timer.h> |
| 27 | #include <linux/fcntl.h> |
| 28 | #include <linux/slab.h> |
| 29 | #include <linux/stat.h> |
| 30 | #include <linux/proc_fs.h> |
| 31 | #include <linux/miscdevice.h> |
| 32 | #include <linux/apm_bios.h> |
| 33 | #include <linux/init.h> |
| 34 | #include <linux/sched.h> |
| 35 | #include <linux/pm.h> |
| 36 | #include <linux/kernel.h> |
| 37 | #include <linux/smp_lock.h> |
| 38 | |
| 39 | #include <linux/adb.h> |
| 40 | #include <linux/pmu.h> |
| 41 | |
| 42 | #include <asm/system.h> |
| 43 | #include <asm/uaccess.h> |
| 44 | #include <asm/machdep.h> |
| 45 | |
| 46 | #undef DEBUG |
| 47 | |
| 48 | #ifdef DEBUG |
| 49 | #define DBG(args...) printk(KERN_DEBUG args) |
| 50 | //#define DBG(args...) xmon_printf(args) |
| 51 | #else |
| 52 | #define DBG(args...) do { } while (0) |
| 53 | #endif |
| 54 | |
| 55 | /* |
| 56 | * The apm_bios device is one of the misc char devices. |
| 57 | * This is its minor number. |
| 58 | */ |
| 59 | #define APM_MINOR_DEV 134 |
| 60 | |
| 61 | /* |
| 62 | * Maximum number of events stored |
| 63 | */ |
| 64 | #define APM_MAX_EVENTS 20 |
| 65 | |
| 66 | #define FAKE_APM_BIOS_VERSION 0x0101 |
| 67 | |
| 68 | #define APM_USER_NOTIFY_TIMEOUT (5*HZ) |
| 69 | |
| 70 | /* |
| 71 | * The per-file APM data |
| 72 | */ |
| 73 | struct apm_user { |
| 74 | int magic; |
| 75 | struct apm_user * next; |
| 76 | int suser: 1; |
| 77 | int suspend_waiting: 1; |
| 78 | int suspends_pending; |
| 79 | int suspends_read; |
| 80 | int event_head; |
| 81 | int event_tail; |
| 82 | apm_event_t events[APM_MAX_EVENTS]; |
| 83 | }; |
| 84 | |
| 85 | /* |
| 86 | * The magic number in apm_user |
| 87 | */ |
| 88 | #define APM_BIOS_MAGIC 0x4101 |
| 89 | |
| 90 | /* |
| 91 | * Local variables |
| 92 | */ |
| 93 | static int suspends_pending; |
| 94 | |
| 95 | static DECLARE_WAIT_QUEUE_HEAD(apm_waitqueue); |
| 96 | static DECLARE_WAIT_QUEUE_HEAD(apm_suspend_waitqueue); |
| 97 | static struct apm_user * user_list; |
| 98 | |
| 99 | static int apm_notify_sleep(struct pmu_sleep_notifier *self, int when); |
| 100 | static struct pmu_sleep_notifier apm_sleep_notifier = { |
| 101 | apm_notify_sleep, |
| 102 | SLEEP_LEVEL_USERLAND, |
| 103 | }; |
| 104 | |
Olaf Hering | 8727585 | 2007-02-10 21:35:12 +0100 | [diff] [blame] | 105 | static const char driver_version[] = "0.5"; /* no spaces */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | |
| 107 | #ifdef DEBUG |
| 108 | static char * apm_event_name[] = { |
| 109 | "system standby", |
| 110 | "system suspend", |
| 111 | "normal resume", |
| 112 | "critical resume", |
| 113 | "low battery", |
| 114 | "power status change", |
| 115 | "update time", |
| 116 | "critical suspend", |
| 117 | "user standby", |
| 118 | "user suspend", |
| 119 | "system standby resume", |
| 120 | "capabilities change" |
| 121 | }; |
| 122 | #define NR_APM_EVENT_NAME \ |
| 123 | (sizeof(apm_event_name) / sizeof(apm_event_name[0])) |
| 124 | |
| 125 | #endif |
| 126 | |
| 127 | static int queue_empty(struct apm_user *as) |
| 128 | { |
| 129 | return as->event_head == as->event_tail; |
| 130 | } |
| 131 | |
| 132 | static apm_event_t get_queued_event(struct apm_user *as) |
| 133 | { |
| 134 | as->event_tail = (as->event_tail + 1) % APM_MAX_EVENTS; |
| 135 | return as->events[as->event_tail]; |
| 136 | } |
| 137 | |
| 138 | static void queue_event(apm_event_t event, struct apm_user *sender) |
| 139 | { |
| 140 | struct apm_user * as; |
| 141 | |
| 142 | DBG("apm_emu: queue_event(%s)\n", apm_event_name[event-1]); |
| 143 | if (user_list == NULL) |
| 144 | return; |
| 145 | for (as = user_list; as != NULL; as = as->next) { |
| 146 | if (as == sender) |
| 147 | continue; |
| 148 | as->event_head = (as->event_head + 1) % APM_MAX_EVENTS; |
| 149 | if (as->event_head == as->event_tail) { |
| 150 | static int notified; |
| 151 | |
| 152 | if (notified++ == 0) |
| 153 | printk(KERN_ERR "apm_emu: an event queue overflowed\n"); |
| 154 | as->event_tail = (as->event_tail + 1) % APM_MAX_EVENTS; |
| 155 | } |
| 156 | as->events[as->event_head] = event; |
| 157 | if (!as->suser) |
| 158 | continue; |
| 159 | switch (event) { |
| 160 | case APM_SYS_SUSPEND: |
| 161 | case APM_USER_SUSPEND: |
| 162 | as->suspends_pending++; |
| 163 | suspends_pending++; |
| 164 | break; |
| 165 | case APM_NORMAL_RESUME: |
| 166 | as->suspend_waiting = 0; |
| 167 | break; |
| 168 | } |
| 169 | } |
| 170 | wake_up_interruptible(&apm_waitqueue); |
| 171 | } |
| 172 | |
| 173 | static int check_apm_user(struct apm_user *as, const char *func) |
| 174 | { |
| 175 | if ((as == NULL) || (as->magic != APM_BIOS_MAGIC)) { |
| 176 | printk(KERN_ERR "apm_emu: %s passed bad filp\n", func); |
| 177 | return 1; |
| 178 | } |
| 179 | return 0; |
| 180 | } |
| 181 | |
| 182 | static ssize_t do_read(struct file *fp, char __user *buf, size_t count, loff_t *ppos) |
| 183 | { |
| 184 | struct apm_user * as; |
| 185 | size_t i; |
| 186 | apm_event_t event; |
| 187 | DECLARE_WAITQUEUE(wait, current); |
| 188 | |
| 189 | as = fp->private_data; |
| 190 | if (check_apm_user(as, "read")) |
| 191 | return -EIO; |
| 192 | if (count < sizeof(apm_event_t)) |
| 193 | return -EINVAL; |
| 194 | if (queue_empty(as)) { |
| 195 | if (fp->f_flags & O_NONBLOCK) |
| 196 | return -EAGAIN; |
| 197 | add_wait_queue(&apm_waitqueue, &wait); |
| 198 | repeat: |
| 199 | set_current_state(TASK_INTERRUPTIBLE); |
| 200 | if (queue_empty(as) && !signal_pending(current)) { |
| 201 | schedule(); |
| 202 | goto repeat; |
| 203 | } |
| 204 | set_current_state(TASK_RUNNING); |
| 205 | remove_wait_queue(&apm_waitqueue, &wait); |
| 206 | } |
| 207 | i = count; |
| 208 | while ((i >= sizeof(event)) && !queue_empty(as)) { |
| 209 | event = get_queued_event(as); |
| 210 | DBG("apm_emu: do_read, returning: %s\n", apm_event_name[event-1]); |
| 211 | if (copy_to_user(buf, &event, sizeof(event))) { |
| 212 | if (i < count) |
| 213 | break; |
| 214 | return -EFAULT; |
| 215 | } |
| 216 | switch (event) { |
| 217 | case APM_SYS_SUSPEND: |
| 218 | case APM_USER_SUSPEND: |
| 219 | as->suspends_read++; |
| 220 | break; |
| 221 | } |
| 222 | buf += sizeof(event); |
| 223 | i -= sizeof(event); |
| 224 | } |
| 225 | if (i < count) |
| 226 | return count - i; |
| 227 | if (signal_pending(current)) |
| 228 | return -ERESTARTSYS; |
| 229 | return 0; |
| 230 | } |
| 231 | |
| 232 | static unsigned int do_poll(struct file *fp, poll_table * wait) |
| 233 | { |
| 234 | struct apm_user * as; |
| 235 | |
| 236 | as = fp->private_data; |
| 237 | if (check_apm_user(as, "poll")) |
| 238 | return 0; |
| 239 | poll_wait(fp, &apm_waitqueue, wait); |
| 240 | if (!queue_empty(as)) |
| 241 | return POLLIN | POLLRDNORM; |
| 242 | return 0; |
| 243 | } |
| 244 | |
| 245 | static int do_ioctl(struct inode * inode, struct file *filp, |
| 246 | u_int cmd, u_long arg) |
| 247 | { |
| 248 | struct apm_user * as; |
| 249 | DECLARE_WAITQUEUE(wait, current); |
| 250 | |
| 251 | as = filp->private_data; |
| 252 | if (check_apm_user(as, "ioctl")) |
| 253 | return -EIO; |
| 254 | if (!as->suser) |
| 255 | return -EPERM; |
| 256 | switch (cmd) { |
| 257 | case APM_IOC_SUSPEND: |
| 258 | /* If a suspend message was sent to userland, we |
| 259 | * consider this as a confirmation message |
| 260 | */ |
| 261 | if (as->suspends_read > 0) { |
| 262 | as->suspends_read--; |
| 263 | as->suspends_pending--; |
| 264 | suspends_pending--; |
| 265 | } else { |
| 266 | // Route to PMU suspend ? |
| 267 | break; |
| 268 | } |
| 269 | as->suspend_waiting = 1; |
| 270 | add_wait_queue(&apm_waitqueue, &wait); |
| 271 | DBG("apm_emu: ioctl waking up sleep waiter !\n"); |
| 272 | wake_up(&apm_suspend_waitqueue); |
| 273 | mb(); |
| 274 | while(as->suspend_waiting && !signal_pending(current)) { |
| 275 | set_current_state(TASK_INTERRUPTIBLE); |
| 276 | schedule(); |
| 277 | } |
| 278 | set_current_state(TASK_RUNNING); |
| 279 | remove_wait_queue(&apm_waitqueue, &wait); |
| 280 | break; |
| 281 | default: |
| 282 | return -EINVAL; |
| 283 | } |
| 284 | return 0; |
| 285 | } |
| 286 | |
| 287 | static int do_release(struct inode * inode, struct file * filp) |
| 288 | { |
| 289 | struct apm_user * as; |
| 290 | |
| 291 | as = filp->private_data; |
| 292 | if (check_apm_user(as, "release")) |
| 293 | return 0; |
| 294 | filp->private_data = NULL; |
| 295 | lock_kernel(); |
| 296 | if (as->suspends_pending > 0) { |
| 297 | suspends_pending -= as->suspends_pending; |
| 298 | if (suspends_pending <= 0) |
| 299 | wake_up(&apm_suspend_waitqueue); |
| 300 | } |
| 301 | if (user_list == as) |
| 302 | user_list = as->next; |
| 303 | else { |
| 304 | struct apm_user * as1; |
| 305 | |
| 306 | for (as1 = user_list; |
| 307 | (as1 != NULL) && (as1->next != as); |
| 308 | as1 = as1->next) |
| 309 | ; |
| 310 | if (as1 == NULL) |
| 311 | printk(KERN_ERR "apm: filp not in user list\n"); |
| 312 | else |
| 313 | as1->next = as->next; |
| 314 | } |
| 315 | unlock_kernel(); |
| 316 | kfree(as); |
| 317 | return 0; |
| 318 | } |
| 319 | |
| 320 | static int do_open(struct inode * inode, struct file * filp) |
| 321 | { |
| 322 | struct apm_user * as; |
| 323 | |
Robert P. J. Day | 5cbded5 | 2006-12-13 00:35:56 -0800 | [diff] [blame] | 324 | as = kmalloc(sizeof(*as), GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 325 | if (as == NULL) { |
| 326 | printk(KERN_ERR "apm: cannot allocate struct of size %d bytes\n", |
| 327 | sizeof(*as)); |
| 328 | return -ENOMEM; |
| 329 | } |
| 330 | as->magic = APM_BIOS_MAGIC; |
| 331 | as->event_tail = as->event_head = 0; |
| 332 | as->suspends_pending = 0; |
| 333 | as->suspends_read = 0; |
| 334 | /* |
| 335 | * XXX - this is a tiny bit broken, when we consider BSD |
| 336 | * process accounting. If the device is opened by root, we |
| 337 | * instantly flag that we used superuser privs. Who knows, |
| 338 | * we might close the device immediately without doing a |
| 339 | * privileged operation -- cevans |
| 340 | */ |
| 341 | as->suser = capable(CAP_SYS_ADMIN); |
| 342 | as->next = user_list; |
| 343 | user_list = as; |
| 344 | filp->private_data = as; |
| 345 | |
| 346 | DBG("apm_emu: opened by %s, suser: %d\n", current->comm, (int)as->suser); |
| 347 | |
| 348 | return 0; |
| 349 | } |
| 350 | |
| 351 | /* Wait for all clients to ack the suspend request. APM API |
| 352 | * doesn't provide a way to NAK, but this could be added |
| 353 | * here. |
| 354 | */ |
| 355 | static int wait_all_suspend(void) |
| 356 | { |
| 357 | DECLARE_WAITQUEUE(wait, current); |
| 358 | |
| 359 | add_wait_queue(&apm_suspend_waitqueue, &wait); |
| 360 | DBG("apm_emu: wait_all_suspend(), suspends_pending: %d\n", suspends_pending); |
| 361 | while(suspends_pending > 0) { |
| 362 | set_current_state(TASK_UNINTERRUPTIBLE); |
| 363 | schedule(); |
| 364 | } |
| 365 | set_current_state(TASK_RUNNING); |
| 366 | remove_wait_queue(&apm_suspend_waitqueue, &wait); |
| 367 | |
| 368 | DBG("apm_emu: wait_all_suspend() - complete !\n"); |
| 369 | |
| 370 | return 1; |
| 371 | } |
| 372 | |
| 373 | static int apm_notify_sleep(struct pmu_sleep_notifier *self, int when) |
| 374 | { |
| 375 | switch(when) { |
| 376 | case PBOOK_SLEEP_REQUEST: |
| 377 | queue_event(APM_SYS_SUSPEND, NULL); |
| 378 | if (!wait_all_suspend()) |
| 379 | return PBOOK_SLEEP_REFUSE; |
| 380 | break; |
| 381 | case PBOOK_SLEEP_REJECT: |
| 382 | case PBOOK_WAKE: |
| 383 | queue_event(APM_NORMAL_RESUME, NULL); |
| 384 | break; |
| 385 | } |
| 386 | return PBOOK_SLEEP_OK; |
| 387 | } |
| 388 | |
| 389 | #define APM_CRITICAL 10 |
| 390 | #define APM_LOW 30 |
| 391 | |
| 392 | static int apm_emu_get_info(char *buf, char **start, off_t fpos, int length) |
| 393 | { |
| 394 | /* Arguments, with symbols from linux/apm_bios.h. Information is |
| 395 | from the Get Power Status (0x0a) call unless otherwise noted. |
| 396 | |
| 397 | 0) Linux driver version (this will change if format changes) |
| 398 | 1) APM BIOS Version. Usually 1.0, 1.1 or 1.2. |
| 399 | 2) APM flags from APM Installation Check (0x00): |
| 400 | bit 0: APM_16_BIT_SUPPORT |
| 401 | bit 1: APM_32_BIT_SUPPORT |
| 402 | bit 2: APM_IDLE_SLOWS_CLOCK |
| 403 | bit 3: APM_BIOS_DISABLED |
| 404 | bit 4: APM_BIOS_DISENGAGED |
| 405 | 3) AC line status |
| 406 | 0x00: Off-line |
| 407 | 0x01: On-line |
| 408 | 0x02: On backup power (BIOS >= 1.1 only) |
| 409 | 0xff: Unknown |
| 410 | 4) Battery status |
| 411 | 0x00: High |
| 412 | 0x01: Low |
| 413 | 0x02: Critical |
| 414 | 0x03: Charging |
| 415 | 0x04: Selected battery not present (BIOS >= 1.2 only) |
| 416 | 0xff: Unknown |
| 417 | 5) Battery flag |
| 418 | bit 0: High |
| 419 | bit 1: Low |
| 420 | bit 2: Critical |
| 421 | bit 3: Charging |
| 422 | bit 7: No system battery |
| 423 | 0xff: Unknown |
| 424 | 6) Remaining battery life (percentage of charge): |
| 425 | 0-100: valid |
| 426 | -1: Unknown |
| 427 | 7) Remaining battery life (time units): |
| 428 | Number of remaining minutes or seconds |
| 429 | -1: Unknown |
| 430 | 8) min = minutes; sec = seconds */ |
| 431 | |
Olaf Hering | 08124f9 | 2005-10-28 17:46:51 -0700 | [diff] [blame] | 432 | unsigned short ac_line_status; |
| 433 | unsigned short battery_status = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 434 | unsigned short battery_flag = 0xff; |
| 435 | int percentage = -1; |
| 436 | int time_units = -1; |
| 437 | int real_count = 0; |
| 438 | int i; |
| 439 | char * p = buf; |
| 440 | char charging = 0; |
| 441 | long charge = -1; |
| 442 | long amperage = 0; |
| 443 | unsigned long btype = 0; |
| 444 | |
| 445 | ac_line_status = ((pmu_power_flags & PMU_PWR_AC_PRESENT) != 0); |
| 446 | for (i=0; i<pmu_battery_count; i++) { |
| 447 | if (pmu_batteries[i].flags & PMU_BATT_PRESENT) { |
Olaf Hering | 08124f9 | 2005-10-28 17:46:51 -0700 | [diff] [blame] | 448 | battery_status++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 449 | if (percentage < 0) |
| 450 | percentage = 0; |
| 451 | if (charge < 0) |
| 452 | charge = 0; |
| 453 | percentage += (pmu_batteries[i].charge * 100) / |
| 454 | pmu_batteries[i].max_charge; |
| 455 | charge += pmu_batteries[i].charge; |
| 456 | amperage += pmu_batteries[i].amperage; |
| 457 | if (btype == 0) |
| 458 | btype = (pmu_batteries[i].flags & PMU_BATT_TYPE_MASK); |
| 459 | real_count++; |
| 460 | if ((pmu_batteries[i].flags & PMU_BATT_CHARGING)) |
| 461 | charging++; |
| 462 | } |
| 463 | } |
Olaf Hering | 08124f9 | 2005-10-28 17:46:51 -0700 | [diff] [blame] | 464 | if (0 == battery_status) |
| 465 | ac_line_status = 1; |
| 466 | battery_status = 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 467 | if (real_count) { |
| 468 | if (amperage < 0) { |
| 469 | if (btype == PMU_BATT_TYPE_SMART) |
| 470 | time_units = (charge * 59) / (amperage * -1); |
| 471 | else |
| 472 | time_units = (charge * 16440) / (amperage * -60); |
| 473 | } |
| 474 | percentage /= real_count; |
| 475 | if (charging > 0) { |
| 476 | battery_status = 0x03; |
| 477 | battery_flag = 0x08; |
| 478 | } else if (percentage <= APM_CRITICAL) { |
| 479 | battery_status = 0x02; |
| 480 | battery_flag = 0x04; |
| 481 | } else if (percentage <= APM_LOW) { |
| 482 | battery_status = 0x01; |
| 483 | battery_flag = 0x02; |
| 484 | } else { |
| 485 | battery_status = 0x00; |
| 486 | battery_flag = 0x01; |
| 487 | } |
| 488 | } |
| 489 | p += sprintf(p, "%s %d.%d 0x%02x 0x%02x 0x%02x 0x%02x %d%% %d %s\n", |
| 490 | driver_version, |
| 491 | (FAKE_APM_BIOS_VERSION >> 8) & 0xff, |
| 492 | FAKE_APM_BIOS_VERSION & 0xff, |
| 493 | 0, |
| 494 | ac_line_status, |
| 495 | battery_status, |
| 496 | battery_flag, |
| 497 | percentage, |
| 498 | time_units, |
| 499 | "min"); |
| 500 | |
| 501 | return p - buf; |
| 502 | } |
| 503 | |
Arjan van de Ven | fa027c2 | 2007-02-12 00:55:33 -0800 | [diff] [blame] | 504 | static const struct file_operations apm_bios_fops = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 505 | .owner = THIS_MODULE, |
| 506 | .read = do_read, |
| 507 | .poll = do_poll, |
| 508 | .ioctl = do_ioctl, |
| 509 | .open = do_open, |
| 510 | .release = do_release, |
| 511 | }; |
| 512 | |
| 513 | static struct miscdevice apm_device = { |
| 514 | APM_MINOR_DEV, |
| 515 | "apm_bios", |
| 516 | &apm_bios_fops |
| 517 | }; |
| 518 | |
| 519 | static int __init apm_emu_init(void) |
| 520 | { |
| 521 | struct proc_dir_entry *apm_proc; |
| 522 | |
| 523 | if (sys_ctrler != SYS_CTRLER_PMU) { |
| 524 | printk(KERN_INFO "apm_emu: Requires a machine with a PMU.\n"); |
| 525 | return -ENODEV; |
| 526 | } |
| 527 | |
| 528 | apm_proc = create_proc_info_entry("apm", 0, NULL, apm_emu_get_info); |
| 529 | if (apm_proc) |
| 530 | apm_proc->owner = THIS_MODULE; |
| 531 | |
Neil Horman | 5d469ec | 2006-12-06 20:37:08 -0800 | [diff] [blame] | 532 | if (misc_register(&apm_device) != 0) |
| 533 | printk(KERN_INFO "Could not create misc. device for apm\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 534 | |
| 535 | pmu_register_sleep_notifier(&apm_sleep_notifier); |
| 536 | |
| 537 | printk(KERN_INFO "apm_emu: APM Emulation %s initialized.\n", driver_version); |
| 538 | |
| 539 | return 0; |
| 540 | } |
| 541 | |
| 542 | static void __exit apm_emu_exit(void) |
| 543 | { |
| 544 | pmu_unregister_sleep_notifier(&apm_sleep_notifier); |
| 545 | misc_deregister(&apm_device); |
| 546 | remove_proc_entry("apm", NULL); |
| 547 | |
| 548 | printk(KERN_INFO "apm_emu: APM Emulation removed.\n"); |
| 549 | } |
| 550 | |
| 551 | module_init(apm_emu_init); |
| 552 | module_exit(apm_emu_exit); |
| 553 | |
| 554 | MODULE_AUTHOR("Benjamin Herrenschmidt"); |
| 555 | MODULE_DESCRIPTION("APM emulation layer for PowerMac"); |
| 556 | MODULE_LICENSE("GPL"); |
| 557 | |