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hwmon: applesmc: Add support for Macbook Pro 3
[deliverable/linux.git] / drivers / hwmon / applesmc.c
CommitLineData
6f2fad74
NB		 1/*
2 * drivers/hwmon/applesmc.c - driver for Apple's SMC (accelerometer, temperature
3 * sensors, fan control, keyboard backlight control) used in Intel-based Apple
4 * computers.
5 *
6 * Copyright (C) 2007 Nicolas Boichat <nicolas@boichat.ch>
7 *
8 * Based on hdaps.c driver:
9 * Copyright (C) 2005 Robert Love <rml@novell.com>
10 * Copyright (C) 2005 Jesper Juhl <jesper.juhl@gmail.com>
11 *
12 * Fan control based on smcFanControl:
13 * Copyright (C) 2006 Hendrik Holtmann <holtmann@mac.com>
14 *
15 * This program is free software; you can redistribute it and/or modify it
16 * under the terms of the GNU General Public License v2 as published by the
17 * Free Software Foundation.
18 *
19 * This program is distributed in the hope that it will be useful, but WITHOUT
20 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
21 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
22 * more details.
23 *
24 * You should have received a copy of the GNU General Public License along with
25 * this program; if not, write to the Free Software Foundation, Inc.,
26 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
27 */
28
29#include <linux/delay.h>
30#include <linux/platform_device.h>
d5cf2b99 31#include <linux/input-polldev.h>
6f2fad74
NB		 32#include <linux/kernel.h>
33#include <linux/module.h>
34#include <linux/timer.h>
35#include <linux/dmi.h>
36#include <linux/mutex.h>
37#include <linux/hwmon-sysfs.h>
38#include <asm/io.h>
39#include <linux/leds.h>
40#include <linux/hwmon.h>
41#include <linux/workqueue.h>
42
43/* data port used by Apple SMC */
44#define APPLESMC_DATA_PORT 0x300
45/* command/status port used by Apple SMC */
46#define APPLESMC_CMD_PORT 0x304
47
48#define APPLESMC_NR_PORTS 32 /* 0x300-0x31f */
49
50#define APPLESMC_MAX_DATA_LENGTH 32
51
52#define APPLESMC_STATUS_MASK 0x0f
53#define APPLESMC_READ_CMD 0x10
54#define APPLESMC_WRITE_CMD 0x11
55#define APPLESMC_GET_KEY_BY_INDEX_CMD 0x12
56#define APPLESMC_GET_KEY_TYPE_CMD 0x13
57
58#define KEY_COUNT_KEY "#KEY" /* r-o ui32 */
59
8bd1a12a
HR		 60#define LIGHT_SENSOR_LEFT_KEY "ALV0" /* r-o {alv (6-10 bytes) */
61#define LIGHT_SENSOR_RIGHT_KEY "ALV1" /* r-o {alv (6-10 bytes) */
d5cf2b99 62#define BACKLIGHT_KEY "LKSB" /* w-o {lkb (2 bytes) */
6f2fad74 63
d5cf2b99 64#define CLAMSHELL_KEY "MSLD" /* r-o ui8 (unused) */
6f2fad74
NB		 65
66#define MOTION_SENSOR_X_KEY "MO_X" /* r-o sp78 (2 bytes) */
67#define MOTION_SENSOR_Y_KEY "MO_Y" /* r-o sp78 (2 bytes) */
68#define MOTION_SENSOR_Z_KEY "MO_Z" /* r-o sp78 (2 bytes) */
69#define MOTION_SENSOR_KEY "MOCN" /* r/w ui16 */
70
71#define FANS_COUNT "FNum" /* r-o ui8 */
72#define FANS_MANUAL "FS! " /* r-w ui16 */
73#define FAN_ACTUAL_SPEED "F0Ac" /* r-o fpe2 (2 bytes) */
74#define FAN_MIN_SPEED "F0Mn" /* r-o fpe2 (2 bytes) */
75#define FAN_MAX_SPEED "F0Mx" /* r-o fpe2 (2 bytes) */
76#define FAN_SAFE_SPEED "F0Sf" /* r-o fpe2 (2 bytes) */
77#define FAN_TARGET_SPEED "F0Tg" /* r-w fpe2 (2 bytes) */
78#define FAN_POSITION "F0ID" /* r-o char[16] */
79
80/*
81 * Temperature sensors keys (sp78 - 2 bytes).
6f2fad74 82 */
8de57709 83static const char* temperature_sensors_sets[][36] = {
1bed24b9 84/* Set 0: Macbook Pro */
6f2fad74
NB		 85 { "TA0P", "TB0T", "TC0D", "TC0P", "TG0H", "TG0P", "TG0T", "Th0H",
86 "Th1H", "Tm0P", "Ts0P", "Ts1P", NULL },
cd19ba13
RO		 87/* Set 1: Macbook2 set */
88 { "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TN1P", "TTF0", "Th0H",
89 "Th0S", "Th1H", NULL },
90/* Set 2: Macbook set */
1bed24b9
MS		 91 { "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TN1P", "Th0H", "Th0S",
92 "Th1H", "Ts0P", NULL },
cd19ba13 93/* Set 3: Macmini set */
8de57709 94 { "TC0D", "TC0P", NULL },
cd19ba13 95/* Set 4: Mac Pro (2 x Quad-Core) */
8de57709
RR		 96 { "TA0P", "TCAG", "TCAH", "TCBG", "TCBH", "TC0C", "TC0D", "TC0P",
97 "TC1C", "TC1D", "TC2C", "TC2D", "TC3C", "TC3D", "THTG", "TH0P",
98 "TH1P", "TH2P", "TH3P", "TMAP", "TMAS", "TMBS", "TM0P", "TM0S",
99 "TM1P", "TM1S", "TM2P", "TM2S", "TM3S", "TM8P", "TM8S", "TM9P",
100 "TM9S", "TN0H", "TS0C", NULL },
9f86f28d
RDI		 101/* Set 5: iMac */
102 { "TC0D", "TA0P", "TG0P", "TG0D", "TG0H", "TH0P", "Tm0P", "TO0P",
103 "Tp0C", NULL },
f91a79fe
GS		 104/* Set 6: Macbook3 set */
105 { "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TTF0", "TW0P", "Th0H",
106 "Th0S", "Th1H", NULL },
f5274c97
HR		 107/* Set 7: Macbook Air */
108 { "TB0T", "TB1S", "TB1T", "TB2S", "TB2T", "TC0D", "TC0P", "TCFP",
109 "TTF0", "TW0P", "Th0H", "Tp0P", "TpFP", "Ts0P", "Ts0S", NULL },
d7549905
HR		 110/* Set 8: Macbook Pro 4,1 (Penryn) */
111 { "TB0T", "TC0D", "TC0P", "TG0D", "TG0H", "TTF0", "TW0P", "Th0H",
112 "Th1H", "Th2H", "Tm0P", "Ts0P", NULL },
07e8dbd3
HR		 113/* Set 9: Macbook Pro 3,1 (Santa Rosa) */
114 { "TALP", "TB0T", "TC0D", "TC0P", "TG0D", "TG0H", "TTF0", "TW0P",
115 "Th0H", "Th1H", "Th2H", "Tm0P", "Ts0P", NULL },
6f2fad74
NB		 116};
117
118/* List of keys used to read/write fan speeds */
119static const char* fan_speed_keys[] = {
120 FAN_ACTUAL_SPEED,
121 FAN_MIN_SPEED,
122 FAN_MAX_SPEED,
123 FAN_SAFE_SPEED,
124 FAN_TARGET_SPEED
125};
126
127#define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */
128#define INIT_WAIT_MSECS 50 /* ... in 50ms increments */
129
d5cf2b99 130#define APPLESMC_POLL_INTERVAL 50 /* msecs */
6f2fad74
NB		 131#define APPLESMC_INPUT_FUZZ 4 /* input event threshold */
132#define APPLESMC_INPUT_FLAT 4
133
134#define SENSOR_X 0
135#define SENSOR_Y 1
136#define SENSOR_Z 2
137
138/* Structure to be passed to DMI_MATCH function */
139struct dmi_match_data {
140/* Indicates whether this computer has an accelerometer. */
141 int accelerometer;
142/* Indicates whether this computer has light sensors and keyboard backlight. */
143 int light;
144/* Indicates which temperature sensors set to use. */
145 int temperature_set;
146};
147
148static const int debug;
149static struct platform_device *pdev;
150static s16 rest_x;
151static s16 rest_y;
1beeffe4 152static struct device *hwmon_dev;
d5cf2b99 153static struct input_polled_dev *applesmc_idev;
6f2fad74
NB		 154
155/* Indicates whether this computer has an accelerometer. */
156static unsigned int applesmc_accelerometer;
157
158/* Indicates whether this computer has light sensors and keyboard backlight. */
159static unsigned int applesmc_light;
160
161/* Indicates which temperature sensors set to use. */
162static unsigned int applesmc_temperature_set;
163
d5cf2b99 164static DEFINE_MUTEX(applesmc_lock);
6f2fad74
NB		 165
166/*
167 * Last index written to key_at_index sysfs file, and value to use for all other
168 * key_at_index_* sysfs files.
169 */
170static unsigned int key_at_index;
171
172static struct workqueue_struct *applesmc_led_wq;
173
174/*
02fcbd14 175 * __wait_status - Wait up to 10ms for the status port to get a certain value
6f2fad74
NB		 176 * (masked with 0x0f), returning zero if the value is obtained. Callers must
177 * hold applesmc_lock.
178 */
179static int __wait_status(u8 val)
180{
181 unsigned int i;
182
183 val = val & APPLESMC_STATUS_MASK;
184
02fcbd14 185 for (i = 0; i < 1000; i++) {
6f2fad74
NB		 186 if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == val) {
187 if (debug)
188 printk(KERN_DEBUG
189 "Waited %d us for status %x\n",
190 i*10, val);
191 return 0;
192 }
193 udelay(10);
194 }
195
196 printk(KERN_WARNING "applesmc: wait status failed: %x != %x\n",
197 val, inb(APPLESMC_CMD_PORT));
198
199 return -EIO;
200}
201
84d2d7f2
HR		 202/*
203 * special treatment of command port - on newer macbooks, it seems necessary
204 * to resend the command byte before polling the status again. Callers must
205 * hold applesmc_lock.
206 */
207static int send_command(u8 cmd)
208{
209 int i;
210 for (i = 0; i < 1000; i++) {
211 outb(cmd, APPLESMC_CMD_PORT);
212 udelay(5);
213 if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == 0x0c)
214 return 0;
215 udelay(5);
216 }
217 printk(KERN_WARNING "applesmc: command failed: %x -> %x\n",
218 cmd, inb(APPLESMC_CMD_PORT));
219 return -EIO;
220}
221
6f2fad74
NB		 222/*
223 * applesmc_read_key - reads len bytes from a given key, and put them in buffer.
224 * Returns zero on success or a negative error on failure. Callers must
225 * hold applesmc_lock.
226 */
227static int applesmc_read_key(const char* key, u8* buffer, u8 len)
228{
229 int i;
230
231 if (len > APPLESMC_MAX_DATA_LENGTH) {
232 printk(KERN_ERR "applesmc_read_key: cannot read more than "
233 "%d bytes\n", APPLESMC_MAX_DATA_LENGTH);
234 return -EINVAL;
235 }
236
84d2d7f2 237 if (send_command(APPLESMC_READ_CMD))
6f2fad74
NB		 238 return -EIO;
239
240 for (i = 0; i < 4; i++) {
241 outb(key[i], APPLESMC_DATA_PORT);
242 if (__wait_status(0x04))
243 return -EIO;
244 }
245 if (debug)
246 printk(KERN_DEBUG "<%s", key);
247
248 outb(len, APPLESMC_DATA_PORT);
249 if (debug)
250 printk(KERN_DEBUG ">%x", len);
251
252 for (i = 0; i < len; i++) {
253 if (__wait_status(0x05))
254 return -EIO;
255 buffer[i] = inb(APPLESMC_DATA_PORT);
256 if (debug)
257 printk(KERN_DEBUG "<%x", buffer[i]);
258 }
259 if (debug)
260 printk(KERN_DEBUG "\n");
261
262 return 0;
263}
264
265/*
266 * applesmc_write_key - writes len bytes from buffer to a given key.
267 * Returns zero on success or a negative error on failure. Callers must
268 * hold applesmc_lock.
269 */
270static int applesmc_write_key(const char* key, u8* buffer, u8 len)
271{
272 int i;
273
274 if (len > APPLESMC_MAX_DATA_LENGTH) {
275 printk(KERN_ERR "applesmc_write_key: cannot write more than "
276 "%d bytes\n", APPLESMC_MAX_DATA_LENGTH);
277 return -EINVAL;
278 }
279
84d2d7f2 280 if (send_command(APPLESMC_WRITE_CMD))
6f2fad74
NB		 281 return -EIO;
282
283 for (i = 0; i < 4; i++) {
284 outb(key[i], APPLESMC_DATA_PORT);
285 if (__wait_status(0x04))
286 return -EIO;
287 }
288
289 outb(len, APPLESMC_DATA_PORT);
290
291 for (i = 0; i < len; i++) {
292 if (__wait_status(0x04))
293 return -EIO;
294 outb(buffer[i], APPLESMC_DATA_PORT);
295 }
296
297 return 0;
298}
299
300/*
301 * applesmc_get_key_at_index - get key at index, and put the result in key
302 * (char[6]). Returns zero on success or a negative error on failure. Callers
303 * must hold applesmc_lock.
304 */
305static int applesmc_get_key_at_index(int index, char* key)
306{
307 int i;
308 u8 readkey[4];
309 readkey[0] = index >> 24;
310 readkey[1] = index >> 16;
311 readkey[2] = index >> 8;
312 readkey[3] = index;
313
84d2d7f2 314 if (send_command(APPLESMC_GET_KEY_BY_INDEX_CMD))
6f2fad74
NB		 315 return -EIO;
316
317 for (i = 0; i < 4; i++) {
318 outb(readkey[i], APPLESMC_DATA_PORT);
319 if (__wait_status(0x04))
320 return -EIO;
321 }
322
323 outb(4, APPLESMC_DATA_PORT);
324
325 for (i = 0; i < 4; i++) {
326 if (__wait_status(0x05))
327 return -EIO;
328 key[i] = inb(APPLESMC_DATA_PORT);
329 }
330 key[4] = 0;
331
332 return 0;
333}
334
335/*
336 * applesmc_get_key_type - get key type, and put the result in type (char[6]).
337 * Returns zero on success or a negative error on failure. Callers must
338 * hold applesmc_lock.
339 */
340static int applesmc_get_key_type(char* key, char* type)
341{
342 int i;
343
84d2d7f2 344 if (send_command(APPLESMC_GET_KEY_TYPE_CMD))
6f2fad74
NB		 345 return -EIO;
346
347 for (i = 0; i < 4; i++) {
348 outb(key[i], APPLESMC_DATA_PORT);
349 if (__wait_status(0x04))
350 return -EIO;
351 }
352
05224091 353 outb(6, APPLESMC_DATA_PORT);
6f2fad74
NB		 354
355 for (i = 0; i < 6; i++) {
356 if (__wait_status(0x05))
357 return -EIO;
358 type[i] = inb(APPLESMC_DATA_PORT);
359 }
360 type[5] = 0;
361
362 return 0;
363}
364
365/*
366 * applesmc_read_motion_sensor - Read motion sensor (X, Y or Z). Callers must
367 * hold applesmc_lock.
368 */
369static int applesmc_read_motion_sensor(int index, s16* value)
370{
371 u8 buffer[2];
372 int ret;
373
374 switch (index) {
375 case SENSOR_X:
376 ret = applesmc_read_key(MOTION_SENSOR_X_KEY, buffer, 2);
377 break;
378 case SENSOR_Y:
379 ret = applesmc_read_key(MOTION_SENSOR_Y_KEY, buffer, 2);
380 break;
381 case SENSOR_Z:
382 ret = applesmc_read_key(MOTION_SENSOR_Z_KEY, buffer, 2);
383 break;
384 default:
385 ret = -EINVAL;
386 }
387
388 *value = ((s16)buffer[0] << 8) | buffer[1];
389
390 return ret;
391}
392
393/*
394 * applesmc_device_init - initialize the accelerometer. Returns zero on success
395 * and negative error code on failure. Can sleep.
396 */
397static int applesmc_device_init(void)
398{
399 int total, ret = -ENXIO;
400 u8 buffer[2];
401
402 if (!applesmc_accelerometer)
403 return 0;
404
405 mutex_lock(&applesmc_lock);
406
407 for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) {
408 if (debug)
409 printk(KERN_DEBUG "applesmc try %d\n", total);
410 if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) &&
411 (buffer[0] != 0x00 || buffer[1] != 0x00)) {
412 if (total == INIT_TIMEOUT_MSECS) {
413 printk(KERN_DEBUG "applesmc: device has"
414 " already been initialized"
415 " (0x%02x, 0x%02x).\n",
416 buffer[0], buffer[1]);
417 } else {
418 printk(KERN_DEBUG "applesmc: device"
419 " successfully initialized"
420 " (0x%02x, 0x%02x).\n",
421 buffer[0], buffer[1]);
422 }
423 ret = 0;
424 goto out;
425 }
426 buffer[0] = 0xe0;
427 buffer[1] = 0x00;
428 applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2);
429 msleep(INIT_WAIT_MSECS);
430 }
431
432 printk(KERN_WARNING "applesmc: failed to init the device\n");
433
434out:
435 mutex_unlock(&applesmc_lock);
436 return ret;
437}
438
439/*
440 * applesmc_get_fan_count - get the number of fans. Callers must NOT hold
441 * applesmc_lock.
442 */
443static int applesmc_get_fan_count(void)
444{
445 int ret;
446 u8 buffer[1];
447
448 mutex_lock(&applesmc_lock);
449
450 ret = applesmc_read_key(FANS_COUNT, buffer, 1);
451
452 mutex_unlock(&applesmc_lock);
453 if (ret)
454 return ret;
455 else
456 return buffer[0];
457}
458
459/* Device model stuff */
460static int applesmc_probe(struct platform_device *dev)
461{
462 int ret;
463
464 ret = applesmc_device_init();
465 if (ret)
466 return ret;
467
468 printk(KERN_INFO "applesmc: device successfully initialized.\n");
469 return 0;
470}
471
472static int applesmc_resume(struct platform_device *dev)
473{
474 return applesmc_device_init();
475}
476
477static struct platform_driver applesmc_driver = {
478 .probe = applesmc_probe,
479 .resume = applesmc_resume,
480 .driver = {
481 .name = "applesmc",
482 .owner = THIS_MODULE,
483 },
484};
485
486/*
487 * applesmc_calibrate - Set our "resting" values. Callers must
488 * hold applesmc_lock.
489 */
490static void applesmc_calibrate(void)
491{
492 applesmc_read_motion_sensor(SENSOR_X, &rest_x);
493 applesmc_read_motion_sensor(SENSOR_Y, &rest_y);
494 rest_x = -rest_x;
495}
496
d5cf2b99 497static void applesmc_idev_poll(struct input_polled_dev *dev)
6f2fad74 498{
d5cf2b99 499 struct input_dev *idev = dev->input;
6f2fad74
NB		 500 s16 x, y;
501
d5cf2b99 502 mutex_lock(&applesmc_lock);
6f2fad74
NB		 503
504 if (applesmc_read_motion_sensor(SENSOR_X, &x))
505 goto out;
506 if (applesmc_read_motion_sensor(SENSOR_Y, &y))
507 goto out;
508
509 x = -x;
d5cf2b99
DT		 510 input_report_abs(idev, ABS_X, x - rest_x);
511 input_report_abs(idev, ABS_Y, y - rest_y);
512 input_sync(idev);
6f2fad74
NB		 513
514out:
6f2fad74
NB		 515 mutex_unlock(&applesmc_lock);
516}
517
518/* Sysfs Files */
519
fa74419b
NB		 520static ssize_t applesmc_name_show(struct device *dev,
521 struct device_attribute *attr, char *buf)
522{
523 return snprintf(buf, PAGE_SIZE, "applesmc\n");
524}
525
6f2fad74
NB		 526static ssize_t applesmc_position_show(struct device *dev,
527 struct device_attribute *attr, char *buf)
528{
529 int ret;
530 s16 x, y, z;
531
532 mutex_lock(&applesmc_lock);
533
534 ret = applesmc_read_motion_sensor(SENSOR_X, &x);
535 if (ret)
536 goto out;
537 ret = applesmc_read_motion_sensor(SENSOR_Y, &y);
538 if (ret)
539 goto out;
540 ret = applesmc_read_motion_sensor(SENSOR_Z, &z);
541 if (ret)
542 goto out;
543
544out:
545 mutex_unlock(&applesmc_lock);
546 if (ret)
547 return ret;
548 else
549 return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z);
550}
551
552static ssize_t applesmc_light_show(struct device *dev,
553 struct device_attribute *attr, char *sysfsbuf)
554{
8bd1a12a 555 static int data_length;
6f2fad74
NB		 556 int ret;
557 u8 left = 0, right = 0;
8bd1a12a 558 u8 buffer[10], query[6];
6f2fad74
NB		 559
560 mutex_lock(&applesmc_lock);
561
8bd1a12a
HR		 562 if (!data_length) {
563 ret = applesmc_get_key_type(LIGHT_SENSOR_LEFT_KEY, query);
564 if (ret)
565 goto out;
566 data_length = clamp_val(query[0], 0, 10);
567 printk(KERN_INFO "applesmc: light sensor data length set to "
568 "%d\n", data_length);
569 }
570
571 ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, data_length);
6f2fad74
NB		 572 left = buffer[2];
573 if (ret)
574 goto out;
8bd1a12a 575 ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, data_length);
6f2fad74
NB		 576 right = buffer[2];
577
578out:
579 mutex_unlock(&applesmc_lock);
580 if (ret)
581 return ret;
582 else
583 return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right);
584}
585
586/* Displays degree Celsius * 1000 */
587static ssize_t applesmc_show_temperature(struct device *dev,
588 struct device_attribute *devattr, char *sysfsbuf)
589{
590 int ret;
591 u8 buffer[2];
592 unsigned int temp;
593 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
594 const char* key =
595 temperature_sensors_sets[applesmc_temperature_set][attr->index];
596
597 mutex_lock(&applesmc_lock);
598
599 ret = applesmc_read_key(key, buffer, 2);
600 temp = buffer[0]*1000;
601 temp += (buffer[1] >> 6) * 250;
602
603 mutex_unlock(&applesmc_lock);
604
605 if (ret)
606 return ret;
607 else
608 return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", temp);
609}
610
611static ssize_t applesmc_show_fan_speed(struct device *dev,
612 struct device_attribute *attr, char *sysfsbuf)
613{
614 int ret;
615 unsigned int speed = 0;
616 char newkey[5];
617 u8 buffer[2];
618 struct sensor_device_attribute_2 *sensor_attr =
619 to_sensor_dev_attr_2(attr);
620
621 newkey[0] = fan_speed_keys[sensor_attr->nr][0];
622 newkey[1] = '0' + sensor_attr->index;
623 newkey[2] = fan_speed_keys[sensor_attr->nr][2];
624 newkey[3] = fan_speed_keys[sensor_attr->nr][3];
625 newkey[4] = 0;
626
627 mutex_lock(&applesmc_lock);
628
629 ret = applesmc_read_key(newkey, buffer, 2);
630 speed = ((buffer[0] << 8 | buffer[1]) >> 2);
631
632 mutex_unlock(&applesmc_lock);
633 if (ret)
634 return ret;
635 else
636 return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed);
637}
638
639static ssize_t applesmc_store_fan_speed(struct device *dev,
640 struct device_attribute *attr,
641 const char *sysfsbuf, size_t count)
642{
643 int ret;
644 u32 speed;
645 char newkey[5];
646 u8 buffer[2];
647 struct sensor_device_attribute_2 *sensor_attr =
648 to_sensor_dev_attr_2(attr);
649
650 speed = simple_strtoul(sysfsbuf, NULL, 10);
651
652 if (speed > 0x4000) /* Bigger than a 14-bit value */
653 return -EINVAL;
654
655 newkey[0] = fan_speed_keys[sensor_attr->nr][0];
656 newkey[1] = '0' + sensor_attr->index;
657 newkey[2] = fan_speed_keys[sensor_attr->nr][2];
658 newkey[3] = fan_speed_keys[sensor_attr->nr][3];
659 newkey[4] = 0;
660
661 mutex_lock(&applesmc_lock);
662
663 buffer[0] = (speed >> 6) & 0xff;
664 buffer[1] = (speed << 2) & 0xff;
665 ret = applesmc_write_key(newkey, buffer, 2);
666
667 mutex_unlock(&applesmc_lock);
668 if (ret)
669 return ret;
670 else
671 return count;
672}
673
674static ssize_t applesmc_show_fan_manual(struct device *dev,
675 struct device_attribute *devattr, char *sysfsbuf)
676{
677 int ret;
678 u16 manual = 0;
679 u8 buffer[2];
680 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
681
682 mutex_lock(&applesmc_lock);
683
684 ret = applesmc_read_key(FANS_MANUAL, buffer, 2);
685 manual = ((buffer[0] << 8 | buffer[1]) >> attr->index) & 0x01;
686
687 mutex_unlock(&applesmc_lock);
688 if (ret)
689 return ret;
690 else
691 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual);
692}
693
694static ssize_t applesmc_store_fan_manual(struct device *dev,
695 struct device_attribute *devattr,
696 const char *sysfsbuf, size_t count)
697{
698 int ret;
699 u8 buffer[2];
700 u32 input;
701 u16 val;
702 struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
703
704 input = simple_strtoul(sysfsbuf, NULL, 10);
705
706 mutex_lock(&applesmc_lock);
707
708 ret = applesmc_read_key(FANS_MANUAL, buffer, 2);
709 val = (buffer[0] << 8 | buffer[1]);
710 if (ret)
711 goto out;
712
713 if (input)
714 val = val | (0x01 << attr->index);
715 else
716 val = val & ~(0x01 << attr->index);
717
718 buffer[0] = (val >> 8) & 0xFF;
719 buffer[1] = val & 0xFF;
720
721 ret = applesmc_write_key(FANS_MANUAL, buffer, 2);
722
723out:
724 mutex_unlock(&applesmc_lock);
725 if (ret)
726 return ret;
727 else
728 return count;
729}
730
731static ssize_t applesmc_show_fan_position(struct device *dev,
732 struct device_attribute *attr, char *sysfsbuf)
733{
734 int ret;
735 char newkey[5];
736 u8 buffer[17];
737 struct sensor_device_attribute_2 *sensor_attr =
738 to_sensor_dev_attr_2(attr);
739
740 newkey[0] = FAN_POSITION[0];
741 newkey[1] = '0' + sensor_attr->index;
742 newkey[2] = FAN_POSITION[2];
743 newkey[3] = FAN_POSITION[3];
744 newkey[4] = 0;
745
746 mutex_lock(&applesmc_lock);
747
748 ret = applesmc_read_key(newkey, buffer, 16);
749 buffer[16] = 0;
750
751 mutex_unlock(&applesmc_lock);
752 if (ret)
753 return ret;
754 else
755 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4);
756}
757
758static ssize_t applesmc_calibrate_show(struct device *dev,
759 struct device_attribute *attr, char *sysfsbuf)
760{
761 return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y);
762}
763
764static ssize_t applesmc_calibrate_store(struct device *dev,
765 struct device_attribute *attr, const char *sysfsbuf, size_t count)
766{
767 mutex_lock(&applesmc_lock);
768 applesmc_calibrate();
769 mutex_unlock(&applesmc_lock);
770
771 return count;
772}
773
774/* Store the next backlight value to be written by the work */
775static unsigned int backlight_value;
776
777static void applesmc_backlight_set(struct work_struct *work)
778{
779 u8 buffer[2];
780
781 mutex_lock(&applesmc_lock);
782 buffer[0] = backlight_value;
783 buffer[1] = 0x00;
784 applesmc_write_key(BACKLIGHT_KEY, buffer, 2);
785 mutex_unlock(&applesmc_lock);
786}
787static DECLARE_WORK(backlight_work, &applesmc_backlight_set);
788
789static void applesmc_brightness_set(struct led_classdev *led_cdev,
790 enum led_brightness value)
791{
792 int ret;
793
794 backlight_value = value;
795 ret = queue_work(applesmc_led_wq, &backlight_work);
796
797 if (debug && (!ret))
798 printk(KERN_DEBUG "applesmc: work was already on the queue.\n");
799}
800
801static ssize_t applesmc_key_count_show(struct device *dev,
802 struct device_attribute *attr, char *sysfsbuf)
803{
804 int ret;
805 u8 buffer[4];
806 u32 count;
807
808 mutex_lock(&applesmc_lock);
809
810 ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4);
811 count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) +
812 ((u32)buffer[2]<<8) + buffer[3];
813
814 mutex_unlock(&applesmc_lock);
815 if (ret)
816 return ret;
817 else
818 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count);
819}
820
821static ssize_t applesmc_key_at_index_read_show(struct device *dev,
822 struct device_attribute *attr, char *sysfsbuf)
823{
824 char key[5];
825 char info[6];
826 int ret;
827
828 mutex_lock(&applesmc_lock);
829
830 ret = applesmc_get_key_at_index(key_at_index, key);
831
832 if (ret || !key[0]) {
833 mutex_unlock(&applesmc_lock);
834
835 return -EINVAL;
836 }
837
838 ret = applesmc_get_key_type(key, info);
839
840 if (ret) {
841 mutex_unlock(&applesmc_lock);
842
843 return ret;
844 }
845
846 /*
847 * info[0] maximum value (APPLESMC_MAX_DATA_LENGTH) is much lower than
848 * PAGE_SIZE, so we don't need any checks before writing to sysfsbuf.
849 */
850 ret = applesmc_read_key(key, sysfsbuf, info[0]);
851
852 mutex_unlock(&applesmc_lock);
853
854 if (!ret) {
855 return info[0];
d5cf2b99 856 } else {
6f2fad74
NB		 857 return ret;
858 }
859}
860
861static ssize_t applesmc_key_at_index_data_length_show(struct device *dev,
862 struct device_attribute *attr, char *sysfsbuf)
863{
864 char key[5];
865 char info[6];
866 int ret;
867
868 mutex_lock(&applesmc_lock);
869
870 ret = applesmc_get_key_at_index(key_at_index, key);
871
872 if (ret || !key[0]) {
873 mutex_unlock(&applesmc_lock);
874
875 return -EINVAL;
876 }
877
878 ret = applesmc_get_key_type(key, info);
879
880 mutex_unlock(&applesmc_lock);
881
882 if (!ret)
883 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", info[0]);
884 else
885 return ret;
886}
887
888static ssize_t applesmc_key_at_index_type_show(struct device *dev,
889 struct device_attribute *attr, char *sysfsbuf)
890{
891 char key[5];
892 char info[6];
893 int ret;
894
895 mutex_lock(&applesmc_lock);
896
897 ret = applesmc_get_key_at_index(key_at_index, key);
898
899 if (ret || !key[0]) {
900 mutex_unlock(&applesmc_lock);
901
902 return -EINVAL;
903 }
904
905 ret = applesmc_get_key_type(key, info);
906
907 mutex_unlock(&applesmc_lock);
908
909 if (!ret)
910 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", info+1);
911 else
912 return ret;
913}
914
915static ssize_t applesmc_key_at_index_name_show(struct device *dev,
916 struct device_attribute *attr, char *sysfsbuf)
917{
918 char key[5];
919 int ret;
920
921 mutex_lock(&applesmc_lock);
922
923 ret = applesmc_get_key_at_index(key_at_index, key);
924
925 mutex_unlock(&applesmc_lock);
926
927 if (!ret && key[0])
928 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key);
929 else
930 return -EINVAL;
931}
932
933static ssize_t applesmc_key_at_index_show(struct device *dev,
934 struct device_attribute *attr, char *sysfsbuf)
935{
936 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index);
937}
938
939static ssize_t applesmc_key_at_index_store(struct device *dev,
940 struct device_attribute *attr, const char *sysfsbuf, size_t count)
941{
942 mutex_lock(&applesmc_lock);
943
944 key_at_index = simple_strtoul(sysfsbuf, NULL, 10);
945
946 mutex_unlock(&applesmc_lock);
947
948 return count;
949}
950
951static struct led_classdev applesmc_backlight = {
6c152bee 952 .name = "smc::kbd_backlight",
6f2fad74
NB		 953 .default_trigger = "nand-disk",
954 .brightness_set = applesmc_brightness_set,
955};
956
fa74419b
NB		 957static DEVICE_ATTR(name, 0444, applesmc_name_show, NULL);
958
6f2fad74
NB		 959static DEVICE_ATTR(position, 0444, applesmc_position_show, NULL);
960static DEVICE_ATTR(calibrate, 0644,
961 applesmc_calibrate_show, applesmc_calibrate_store);
962
963static struct attribute *accelerometer_attributes[] = {
964 &dev_attr_position.attr,
965 &dev_attr_calibrate.attr,
966 NULL
967};
968
969static const struct attribute_group accelerometer_attributes_group =
970 { .attrs = accelerometer_attributes };
971
972static DEVICE_ATTR(light, 0444, applesmc_light_show, NULL);
973
974static DEVICE_ATTR(key_count, 0444, applesmc_key_count_show, NULL);
975static DEVICE_ATTR(key_at_index, 0644,
976 applesmc_key_at_index_show, applesmc_key_at_index_store);
977static DEVICE_ATTR(key_at_index_name, 0444,
978 applesmc_key_at_index_name_show, NULL);
979static DEVICE_ATTR(key_at_index_type, 0444,
980 applesmc_key_at_index_type_show, NULL);
981static DEVICE_ATTR(key_at_index_data_length, 0444,
982 applesmc_key_at_index_data_length_show, NULL);
983static DEVICE_ATTR(key_at_index_data, 0444,
984 applesmc_key_at_index_read_show, NULL);
985
986static struct attribute *key_enumeration_attributes[] = {
987 &dev_attr_key_count.attr,
988 &dev_attr_key_at_index.attr,
989 &dev_attr_key_at_index_name.attr,
990 &dev_attr_key_at_index_type.attr,
991 &dev_attr_key_at_index_data_length.attr,
992 &dev_attr_key_at_index_data.attr,
993 NULL
994};
995
996static const struct attribute_group key_enumeration_group =
997 { .attrs = key_enumeration_attributes };
998
999/*
1000 * Macro defining SENSOR_DEVICE_ATTR for a fan sysfs entries.
1001 * - show actual speed
1002 * - show/store minimum speed
1003 * - show maximum speed
1004 * - show safe speed
1005 * - show/store target speed
1006 * - show/store manual mode
1007 */
1008#define sysfs_fan_speeds_offset(offset) \
1009static SENSOR_DEVICE_ATTR_2(fan##offset##_input, S_IRUGO, \
1010 applesmc_show_fan_speed, NULL, 0, offset-1); \
1011\
1012static SENSOR_DEVICE_ATTR_2(fan##offset##_min, S_IRUGO | S_IWUSR, \
1013 applesmc_show_fan_speed, applesmc_store_fan_speed, 1, offset-1); \
1014\
1015static SENSOR_DEVICE_ATTR_2(fan##offset##_max, S_IRUGO, \
1016 applesmc_show_fan_speed, NULL, 2, offset-1); \
1017\
1018static SENSOR_DEVICE_ATTR_2(fan##offset##_safe, S_IRUGO, \
1019 applesmc_show_fan_speed, NULL, 3, offset-1); \
1020\
1021static SENSOR_DEVICE_ATTR_2(fan##offset##_output, S_IRUGO | S_IWUSR, \
1022 applesmc_show_fan_speed, applesmc_store_fan_speed, 4, offset-1); \
1023\
1024static SENSOR_DEVICE_ATTR(fan##offset##_manual, S_IRUGO | S_IWUSR, \
1025 applesmc_show_fan_manual, applesmc_store_fan_manual, offset-1); \
1026\
da4e8ca3 1027static SENSOR_DEVICE_ATTR(fan##offset##_label, S_IRUGO, \
6f2fad74
NB		 1028 applesmc_show_fan_position, NULL, offset-1); \
1029\
1030static struct attribute *fan##offset##_attributes[] = { \
1031 &sensor_dev_attr_fan##offset##_input.dev_attr.attr, \
1032 &sensor_dev_attr_fan##offset##_min.dev_attr.attr, \
1033 &sensor_dev_attr_fan##offset##_max.dev_attr.attr, \
1034 &sensor_dev_attr_fan##offset##_safe.dev_attr.attr, \
1035 &sensor_dev_attr_fan##offset##_output.dev_attr.attr, \
1036 &sensor_dev_attr_fan##offset##_manual.dev_attr.attr, \
da4e8ca3 1037 &sensor_dev_attr_fan##offset##_label.dev_attr.attr, \
6f2fad74
NB		 1038 NULL \
1039};
1040
1041/*
1042 * Create the needed functions for each fan using the macro defined above
8de57709 1043 * (4 fans are supported)
6f2fad74
NB		 1044 */
1045sysfs_fan_speeds_offset(1);
1046sysfs_fan_speeds_offset(2);
8de57709
RR		 1047sysfs_fan_speeds_offset(3);
1048sysfs_fan_speeds_offset(4);
6f2fad74
NB		 1049
1050static const struct attribute_group fan_attribute_groups[] = {
1051 { .attrs = fan1_attributes },
8de57709
RR		 1052 { .attrs = fan2_attributes },
1053 { .attrs = fan3_attributes },
1054 { .attrs = fan4_attributes },
6f2fad74
NB		 1055};
1056
1057/*
1058 * Temperature sensors sysfs entries.
1059 */
1060static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO,
1061 applesmc_show_temperature, NULL, 0);
1062static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO,
1063 applesmc_show_temperature, NULL, 1);
1064static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO,
1065 applesmc_show_temperature, NULL, 2);
1066static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO,
1067 applesmc_show_temperature, NULL, 3);
1068static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO,
1069 applesmc_show_temperature, NULL, 4);
1070static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO,
1071 applesmc_show_temperature, NULL, 5);
1072static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO,
1073 applesmc_show_temperature, NULL, 6);
1074static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO,
1075 applesmc_show_temperature, NULL, 7);
1076static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO,
1077 applesmc_show_temperature, NULL, 8);
1078static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO,
1079 applesmc_show_temperature, NULL, 9);
1080static SENSOR_DEVICE_ATTR(temp11_input, S_IRUGO,
1081 applesmc_show_temperature, NULL, 10);
1082static SENSOR_DEVICE_ATTR(temp12_input, S_IRUGO,
1083 applesmc_show_temperature, NULL, 11);
8de57709
RR		 1084static SENSOR_DEVICE_ATTR(temp13_input, S_IRUGO,
1085 applesmc_show_temperature, NULL, 12);
1086static SENSOR_DEVICE_ATTR(temp14_input, S_IRUGO,
1087 applesmc_show_temperature, NULL, 13);
1088static SENSOR_DEVICE_ATTR(temp15_input, S_IRUGO,
1089 applesmc_show_temperature, NULL, 14);
1090static SENSOR_DEVICE_ATTR(temp16_input, S_IRUGO,
1091 applesmc_show_temperature, NULL, 15);
1092static SENSOR_DEVICE_ATTR(temp17_input, S_IRUGO,
1093 applesmc_show_temperature, NULL, 16);
1094static SENSOR_DEVICE_ATTR(temp18_input, S_IRUGO,
1095 applesmc_show_temperature, NULL, 17);
1096static SENSOR_DEVICE_ATTR(temp19_input, S_IRUGO,
1097 applesmc_show_temperature, NULL, 18);
1098static SENSOR_DEVICE_ATTR(temp20_input, S_IRUGO,
1099 applesmc_show_temperature, NULL, 19);
1100static SENSOR_DEVICE_ATTR(temp21_input, S_IRUGO,
1101 applesmc_show_temperature, NULL, 20);
1102static SENSOR_DEVICE_ATTR(temp22_input, S_IRUGO,
1103 applesmc_show_temperature, NULL, 21);
1104static SENSOR_DEVICE_ATTR(temp23_input, S_IRUGO,
1105 applesmc_show_temperature, NULL, 22);
1106static SENSOR_DEVICE_ATTR(temp24_input, S_IRUGO,
1107 applesmc_show_temperature, NULL, 23);
1108static SENSOR_DEVICE_ATTR(temp25_input, S_IRUGO,
1109 applesmc_show_temperature, NULL, 24);
1110static SENSOR_DEVICE_ATTR(temp26_input, S_IRUGO,
1111 applesmc_show_temperature, NULL, 25);
1112static SENSOR_DEVICE_ATTR(temp27_input, S_IRUGO,
1113 applesmc_show_temperature, NULL, 26);
1114static SENSOR_DEVICE_ATTR(temp28_input, S_IRUGO,
1115 applesmc_show_temperature, NULL, 27);
1116static SENSOR_DEVICE_ATTR(temp29_input, S_IRUGO,
1117 applesmc_show_temperature, NULL, 28);
1118static SENSOR_DEVICE_ATTR(temp30_input, S_IRUGO,
1119 applesmc_show_temperature, NULL, 29);
1120static SENSOR_DEVICE_ATTR(temp31_input, S_IRUGO,
1121 applesmc_show_temperature, NULL, 30);
1122static SENSOR_DEVICE_ATTR(temp32_input, S_IRUGO,
1123 applesmc_show_temperature, NULL, 31);
1124static SENSOR_DEVICE_ATTR(temp33_input, S_IRUGO,
1125 applesmc_show_temperature, NULL, 32);
1126static SENSOR_DEVICE_ATTR(temp34_input, S_IRUGO,
1127 applesmc_show_temperature, NULL, 33);
1128static SENSOR_DEVICE_ATTR(temp35_input, S_IRUGO,
1129 applesmc_show_temperature, NULL, 34);
6f2fad74
NB		 1130
1131static struct attribute *temperature_attributes[] = {
1132 &sensor_dev_attr_temp1_input.dev_attr.attr,
1133 &sensor_dev_attr_temp2_input.dev_attr.attr,
1134 &sensor_dev_attr_temp3_input.dev_attr.attr,
1135 &sensor_dev_attr_temp4_input.dev_attr.attr,
1136 &sensor_dev_attr_temp5_input.dev_attr.attr,
1137 &sensor_dev_attr_temp6_input.dev_attr.attr,
1138 &sensor_dev_attr_temp7_input.dev_attr.attr,
1139 &sensor_dev_attr_temp8_input.dev_attr.attr,
1140 &sensor_dev_attr_temp9_input.dev_attr.attr,
1141 &sensor_dev_attr_temp10_input.dev_attr.attr,
1142 &sensor_dev_attr_temp11_input.dev_attr.attr,
1143 &sensor_dev_attr_temp12_input.dev_attr.attr,
8de57709
RR		 1144 &sensor_dev_attr_temp13_input.dev_attr.attr,
1145 &sensor_dev_attr_temp14_input.dev_attr.attr,
1146 &sensor_dev_attr_temp15_input.dev_attr.attr,
1147 &sensor_dev_attr_temp16_input.dev_attr.attr,
1148 &sensor_dev_attr_temp17_input.dev_attr.attr,
1149 &sensor_dev_attr_temp18_input.dev_attr.attr,
1150 &sensor_dev_attr_temp19_input.dev_attr.attr,
1151 &sensor_dev_attr_temp20_input.dev_attr.attr,
1152 &sensor_dev_attr_temp21_input.dev_attr.attr,
1153 &sensor_dev_attr_temp22_input.dev_attr.attr,
1154 &sensor_dev_attr_temp23_input.dev_attr.attr,
1155 &sensor_dev_attr_temp24_input.dev_attr.attr,
1156 &sensor_dev_attr_temp25_input.dev_attr.attr,
1157 &sensor_dev_attr_temp26_input.dev_attr.attr,
1158 &sensor_dev_attr_temp27_input.dev_attr.attr,
1159 &sensor_dev_attr_temp28_input.dev_attr.attr,
1160 &sensor_dev_attr_temp29_input.dev_attr.attr,
1161 &sensor_dev_attr_temp30_input.dev_attr.attr,
1162 &sensor_dev_attr_temp31_input.dev_attr.attr,
1163 &sensor_dev_attr_temp32_input.dev_attr.attr,
1164 &sensor_dev_attr_temp33_input.dev_attr.attr,
1165 &sensor_dev_attr_temp34_input.dev_attr.attr,
1166 &sensor_dev_attr_temp35_input.dev_attr.attr,
6f2fad74
NB		 1167 NULL
1168};
1169
1170static const struct attribute_group temperature_attributes_group =
1171 { .attrs = temperature_attributes };
1172
1173/* Module stuff */
1174
1175/*
1176 * applesmc_dmi_match - found a match. return one, short-circuiting the hunt.
1177 */
1855256c 1178static int applesmc_dmi_match(const struct dmi_system_id *id)
6f2fad74
NB		 1179{
1180 int i = 0;
1181 struct dmi_match_data* dmi_data = id->driver_data;
1182 printk(KERN_INFO "applesmc: %s detected:\n", id->ident);
1183 applesmc_accelerometer = dmi_data->accelerometer;
1184 printk(KERN_INFO "applesmc: - Model %s accelerometer\n",
1185 applesmc_accelerometer ? "with" : "without");
1186 applesmc_light = dmi_data->light;
1187 printk(KERN_INFO "applesmc: - Model %s light sensors and backlight\n",
1188 applesmc_light ? "with" : "without");
1189
1190 applesmc_temperature_set = dmi_data->temperature_set;
1191 while (temperature_sensors_sets[applesmc_temperature_set][i] != NULL)
1192 i++;
1193 printk(KERN_INFO "applesmc: - Model with %d temperature sensors\n", i);
1194 return 1;
1195}
1196
1197/* Create accelerometer ressources */
1198static int applesmc_create_accelerometer(void)
1199{
d5cf2b99 1200 struct input_dev *idev;
6f2fad74
NB		 1201 int ret;
1202
1203 ret = sysfs_create_group(&pdev->dev.kobj,
1204 &accelerometer_attributes_group);
1205 if (ret)
1206 goto out;
1207
d5cf2b99 1208 applesmc_idev = input_allocate_polled_device();
6f2fad74
NB		 1209 if (!applesmc_idev) {
1210 ret = -ENOMEM;
1211 goto out_sysfs;
1212 }
1213
d5cf2b99
DT		 1214 applesmc_idev->poll = applesmc_idev_poll;
1215 applesmc_idev->poll_interval = APPLESMC_POLL_INTERVAL;
1216
6f2fad74
NB		 1217 /* initial calibrate for the input device */
1218 applesmc_calibrate();
1219
d5cf2b99
DT		 1220 /* initialize the input device */
1221 idev = applesmc_idev->input;
1222 idev->name = "applesmc";
1223 idev->id.bustype = BUS_HOST;
1224 idev->dev.parent = &pdev->dev;
7b19ada2 1225 idev->evbit[0] = BIT_MASK(EV_ABS);
d5cf2b99 1226 input_set_abs_params(idev, ABS_X,
6f2fad74 1227 -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT);
d5cf2b99 1228 input_set_abs_params(idev, ABS_Y,
6f2fad74
NB		 1229 -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT);
1230
d5cf2b99 1231 ret = input_register_polled_device(applesmc_idev);
6f2fad74
NB		 1232 if (ret)
1233 goto out_idev;
1234
6f2fad74
NB		 1235 return 0;
1236
1237out_idev:
d5cf2b99 1238 input_free_polled_device(applesmc_idev);
6f2fad74
NB		 1239
1240out_sysfs:
1241 sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group);
1242
1243out:
1244 printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret);
1245 return ret;
1246}
1247
1248/* Release all ressources used by the accelerometer */
1249static void applesmc_release_accelerometer(void)
1250{
d5cf2b99
DT		 1251 input_unregister_polled_device(applesmc_idev);
1252 input_free_polled_device(applesmc_idev);
6f2fad74
NB		 1253 sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group);
1254}
1255
1256static __initdata struct dmi_match_data applesmc_dmi_data[] = {
1257/* MacBook Pro: accelerometer, backlight and temperature set 0 */
1258 { .accelerometer = 1, .light = 1, .temperature_set = 0 },
cd19ba13 1259/* MacBook2: accelerometer and temperature set 1 */
1bed24b9 1260 { .accelerometer = 1, .light = 0, .temperature_set = 1 },
cd19ba13
RO		 1261/* MacBook: accelerometer and temperature set 2 */
1262 { .accelerometer = 1, .light = 0, .temperature_set = 2 },
1263/* MacMini: temperature set 3 */
8de57709 1264 { .accelerometer = 0, .light = 0, .temperature_set = 3 },
cd19ba13
RO		 1265/* MacPro: temperature set 4 */
1266 { .accelerometer = 0, .light = 0, .temperature_set = 4 },
9f86f28d
RDI		 1267/* iMac: temperature set 5 */
1268 { .accelerometer = 0, .light = 0, .temperature_set = 5 },
f91a79fe
GS		 1269/* MacBook3: accelerometer and temperature set 6 */
1270 { .accelerometer = 1, .light = 0, .temperature_set = 6 },
f5274c97
HR		 1271/* MacBook Air: accelerometer, backlight and temperature set 7 */
1272 { .accelerometer = 1, .light = 1, .temperature_set = 7 },
d7549905
HR		 1273/* MacBook Pro 4: accelerometer, backlight and temperature set 8 */
1274 { .accelerometer = 1, .light = 1, .temperature_set = 8 },
07e8dbd3
HR		 1275/* MacBook Pro 3: accelerometer, backlight and temperature set 9 */
1276 { .accelerometer = 1, .light = 1, .temperature_set = 9 },
6f2fad74
NB		 1277};
1278
1279/* Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1".
1280 * So we need to put "Apple MacBook Pro" before "Apple MacBook". */
1281static __initdata struct dmi_system_id applesmc_whitelist[] = {
f5274c97
HR		 1282 { applesmc_dmi_match, "Apple MacBook Air", {
1283 DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
1284 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir") },
7b5e3cb2 1285 &applesmc_dmi_data[7]},
d7549905
HR		 1286 { applesmc_dmi_match, "Apple MacBook Pro 4", {
1287 DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
1288 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro4") },
1289 &applesmc_dmi_data[8]},
07e8dbd3
HR		 1290 { applesmc_dmi_match, "Apple MacBook Pro 3", {
1291 DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
1292 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3") },
1293 &applesmc_dmi_data[9]},
6f2fad74
NB		 1294 { applesmc_dmi_match, "Apple MacBook Pro", {
1295 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1296 DMI_MATCH(DMI_PRODUCT_NAME,"MacBookPro") },
7b5e3cb2 1297 &applesmc_dmi_data[0]},
f91a79fe 1298 { applesmc_dmi_match, "Apple MacBook (v2)", {
6f2fad74 1299 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
cd19ba13 1300 DMI_MATCH(DMI_PRODUCT_NAME,"MacBook2") },
7b5e3cb2 1301 &applesmc_dmi_data[1]},
f91a79fe
GS		 1302 { applesmc_dmi_match, "Apple MacBook (v3)", {
1303 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1304 DMI_MATCH(DMI_PRODUCT_NAME,"MacBook3") },
7b5e3cb2 1305 &applesmc_dmi_data[6]},
cd19ba13
RO		 1306 { applesmc_dmi_match, "Apple MacBook", {
1307 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1308 DMI_MATCH(DMI_PRODUCT_NAME,"MacBook") },
7b5e3cb2 1309 &applesmc_dmi_data[2]},
6f2fad74
NB		 1310 { applesmc_dmi_match, "Apple Macmini", {
1311 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1312 DMI_MATCH(DMI_PRODUCT_NAME,"Macmini") },
7b5e3cb2 1313 &applesmc_dmi_data[3]},
8de57709
RR		 1314 { applesmc_dmi_match, "Apple MacPro2", {
1315 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1316 DMI_MATCH(DMI_PRODUCT_NAME,"MacPro2") },
7b5e3cb2 1317 &applesmc_dmi_data[4]},
9f86f28d
RDI		 1318 { applesmc_dmi_match, "Apple iMac", {
1319 DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
1320 DMI_MATCH(DMI_PRODUCT_NAME,"iMac") },
7b5e3cb2 1321 &applesmc_dmi_data[5]},
6f2fad74
NB		 1322 { .ident = NULL }
1323};
1324
1325static int __init applesmc_init(void)
1326{
1327 int ret;
1328 int count;
1329 int i;
1330
6f2fad74
NB		 1331 if (!dmi_check_system(applesmc_whitelist)) {
1332 printk(KERN_WARNING "applesmc: supported laptop not found!\n");
1333 ret = -ENODEV;
1334 goto out;
1335 }
1336
1337 if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS,
1338 "applesmc")) {
1339 ret = -ENXIO;
1340 goto out;
1341 }
1342
1343 ret = platform_driver_register(&applesmc_driver);
1344 if (ret)
1345 goto out_region;
1346
ddfbf2af
JD		 1347 pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT,
1348 NULL, 0);
6f2fad74
NB		 1349 if (IS_ERR(pdev)) {
1350 ret = PTR_ERR(pdev);
1351 goto out_driver;
1352 }
1353
fa74419b 1354 ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_name.attr);
6996abf0
NB		 1355 if (ret)
1356 goto out_device;
fa74419b 1357
6f2fad74
NB		 1358 /* Create key enumeration sysfs files */
1359 ret = sysfs_create_group(&pdev->dev.kobj, &key_enumeration_group);
1360 if (ret)
6996abf0 1361 goto out_name;
6f2fad74
NB		 1362
1363 /* create fan files */
1364 count = applesmc_get_fan_count();
1365 if (count < 0) {
1366 printk(KERN_ERR "applesmc: Cannot get the number of fans.\n");
1367 } else {
1368 printk(KERN_INFO "applesmc: %d fans found.\n", count);
1369
1370 switch (count) {
1371 default:
8de57709
RR		 1372 printk(KERN_WARNING "applesmc: More than 4 fans found,"
1373 " but at most 4 fans are supported"
6f2fad74 1374 " by the driver.\n");
8de57709
RR		 1375 case 4:
1376 ret = sysfs_create_group(&pdev->dev.kobj,
1377 &fan_attribute_groups[3]);
1378 if (ret)
1379 goto out_key_enumeration;
1380 case 3:
1381 ret = sysfs_create_group(&pdev->dev.kobj,
1382 &fan_attribute_groups[2]);
1383 if (ret)
1384 goto out_key_enumeration;
6f2fad74
NB		 1385 case 2:
1386 ret = sysfs_create_group(&pdev->dev.kobj,
1387 &fan_attribute_groups[1]);
1388 if (ret)
1389 goto out_key_enumeration;
1390 case 1:
1391 ret = sysfs_create_group(&pdev->dev.kobj,
1392 &fan_attribute_groups[0]);
1393 if (ret)
1394 goto out_fan_1;
1395 case 0:
1396 ;
1397 }
1398 }
1399
1400 for (i = 0;
1401 temperature_sensors_sets[applesmc_temperature_set][i] != NULL;
1402 i++) {
1403 if (temperature_attributes[i] == NULL) {
1404 printk(KERN_ERR "applesmc: More temperature sensors "
1405 "in temperature_sensors_sets (at least %i)"
1406 "than available sysfs files in "
1407 "temperature_attributes (%i), please report "
1408 "this bug.\n", i, i-1);
1409 goto out_temperature;
1410 }
1411 ret = sysfs_create_file(&pdev->dev.kobj,
1412 temperature_attributes[i]);
1413 if (ret)
1414 goto out_temperature;
1415 }
1416
1417 if (applesmc_accelerometer) {
1418 ret = applesmc_create_accelerometer();
1419 if (ret)
1420 goto out_temperature;
1421 }
1422
1423 if (applesmc_light) {
1424 /* Add light sensor file */
1425 ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_light.attr);
1426 if (ret)
1427 goto out_accelerometer;
1428
1429 /* Create the workqueue */
1430 applesmc_led_wq = create_singlethread_workqueue("applesmc-led");
1431 if (!applesmc_led_wq) {
1432 ret = -ENOMEM;
1433 goto out_light_sysfs;
1434 }
1435
1436 /* register as a led device */
1437 ret = led_classdev_register(&pdev->dev, &applesmc_backlight);
1438 if (ret < 0)
1439 goto out_light_wq;
1440 }
1441
1beeffe4
TJ		 1442 hwmon_dev = hwmon_device_register(&pdev->dev);
1443 if (IS_ERR(hwmon_dev)) {
1444 ret = PTR_ERR(hwmon_dev);
6f2fad74
NB		 1445 goto out_light_ledclass;
1446 }
1447
1448 printk(KERN_INFO "applesmc: driver successfully loaded.\n");
1449
1450 return 0;
1451
1452out_light_ledclass:
1453 if (applesmc_light)
1454 led_classdev_unregister(&applesmc_backlight);
1455out_light_wq:
1456 if (applesmc_light)
1457 destroy_workqueue(applesmc_led_wq);
1458out_light_sysfs:
1459 if (applesmc_light)
1460 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr);
1461out_accelerometer:
1462 if (applesmc_accelerometer)
1463 applesmc_release_accelerometer();
1464out_temperature:
1465 sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
1466 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]);
1467out_fan_1:
1468 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]);
1469out_key_enumeration:
1470 sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
6996abf0
NB		 1471out_name:
1472 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
6f2fad74
NB		 1473out_device:
1474 platform_device_unregister(pdev);
1475out_driver:
1476 platform_driver_unregister(&applesmc_driver);
1477out_region:
1478 release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS);
1479out:
1480 printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret);
1481 return ret;
1482}
1483
1484static void __exit applesmc_exit(void)
1485{
1beeffe4 1486 hwmon_device_unregister(hwmon_dev);
6f2fad74
NB		 1487 if (applesmc_light) {
1488 led_classdev_unregister(&applesmc_backlight);
1489 destroy_workqueue(applesmc_led_wq);
1490 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr);
1491 }
1492 if (applesmc_accelerometer)
1493 applesmc_release_accelerometer();
1494 sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
1495 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[0]);
1496 sysfs_remove_group(&pdev->dev.kobj, &fan_attribute_groups[1]);
1497 sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
6996abf0 1498 sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
6f2fad74
NB		 1499 platform_device_unregister(pdev);
1500 platform_driver_unregister(&applesmc_driver);
1501 release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS);
1502
1503 printk(KERN_INFO "applesmc: driver unloaded.\n");
1504}
1505
1506module_init(applesmc_init);
1507module_exit(applesmc_exit);
1508
1509MODULE_AUTHOR("Nicolas Boichat");
1510MODULE_DESCRIPTION("Apple SMC");
1511MODULE_LICENSE("GPL v2");
Linux kernel - Deliverables
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