2 * drivers/hwmon/applesmc.c - driver for Apple's SMC (accelerometer, temperature
3 * sensors, fan control, keyboard backlight control) used in Intel-based Apple
6 * Copyright (C) 2007 Nicolas Boichat <nicolas@boichat.ch>
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>
12 * Fan control based on smcFanControl:
13 * Copyright (C) 2006 Hendrik Holtmann <holtmann@mac.com>
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.
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
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
29 #include <linux/delay.h>
30 #include <linux/platform_device.h>
31 #include <linux/input-polldev.h>
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>
39 #include <linux/leds.h>
40 #include <linux/hwmon.h>
41 #include <linux/workqueue.h>
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
48 #define APPLESMC_NR_PORTS 32 /* 0x300-0x31f */
50 #define APPLESMC_MAX_DATA_LENGTH 32
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
58 #define KEY_COUNT_KEY "#KEY" /* r-o ui32 */
60 #define LIGHT_SENSOR_LEFT_KEY "ALV0" /* r-o {alv (6 bytes) */
61 #define LIGHT_SENSOR_RIGHT_KEY "ALV1" /* r-o {alv (6 bytes) */
62 #define BACKLIGHT_KEY "LKSB" /* w-o {lkb (2 bytes) */
64 #define CLAMSHELL_KEY "MSLD" /* r-o ui8 (unused) */
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 */
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] */
81 * Temperature sensors keys (sp78 - 2 bytes).
83 static const char* temperature_sensors_sets
[][36] = {
84 /* Set 0: Macbook Pro */
85 { "TA0P", "TB0T", "TC0D", "TC0P", "TG0H", "TG0P", "TG0T", "Th0H",
86 "Th1H", "Tm0P", "Ts0P", "Ts1P", NULL
},
87 /* Set 1: Macbook2 set */
88 { "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TN1P", "TTF0", "Th0H",
89 "Th0S", "Th1H", NULL
},
90 /* Set 2: Macbook set */
91 { "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TN1P", "Th0H", "Th0S",
92 "Th1H", "Ts0P", NULL
},
93 /* Set 3: Macmini set */
94 { "TC0D", "TC0P", NULL
},
95 /* Set 4: Mac Pro (2 x Quad-Core) */
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
},
102 { "TC0D", "TA0P", "TG0P", "TG0D", "TG0H", "TH0P", "Tm0P", "TO0P",
104 /* Set 6: Macbook3 set */
105 { "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TTF0", "TW0P", "Th0H",
106 "Th0S", "Th1H", NULL
},
109 /* List of keys used to read/write fan speeds */
110 static const char* fan_speed_keys
[] = {
118 #define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */
119 #define INIT_WAIT_MSECS 50 /* ... in 50ms increments */
121 #define APPLESMC_POLL_INTERVAL 50 /* msecs */
122 #define APPLESMC_INPUT_FUZZ 4 /* input event threshold */
123 #define APPLESMC_INPUT_FLAT 4
129 /* Structure to be passed to DMI_MATCH function */
130 struct dmi_match_data
{
131 /* Indicates whether this computer has an accelerometer. */
133 /* Indicates whether this computer has light sensors and keyboard backlight. */
135 /* Indicates which temperature sensors set to use. */
139 static const int debug
;
140 static struct platform_device
*pdev
;
143 static struct device
*hwmon_dev
;
144 static struct input_polled_dev
*applesmc_idev
;
146 /* Indicates whether this computer has an accelerometer. */
147 static unsigned int applesmc_accelerometer
;
149 /* Indicates whether this computer has light sensors and keyboard backlight. */
150 static unsigned int applesmc_light
;
152 /* Indicates which temperature sensors set to use. */
153 static unsigned int applesmc_temperature_set
;
155 static DEFINE_MUTEX(applesmc_lock
);
158 * Last index written to key_at_index sysfs file, and value to use for all other
159 * key_at_index_* sysfs files.
161 static unsigned int key_at_index
;
163 static struct workqueue_struct
*applesmc_led_wq
;
166 * __wait_status - Wait up to 2ms for the status port to get a certain value
167 * (masked with 0x0f), returning zero if the value is obtained. Callers must
168 * hold applesmc_lock.
170 static int __wait_status(u8 val
)
174 val
= val
& APPLESMC_STATUS_MASK
;
176 for (i
= 0; i
< 200; i
++) {
177 if ((inb(APPLESMC_CMD_PORT
) & APPLESMC_STATUS_MASK
) == val
) {
180 "Waited %d us for status %x\n",
187 printk(KERN_WARNING
"applesmc: wait status failed: %x != %x\n",
188 val
, inb(APPLESMC_CMD_PORT
));
194 * applesmc_read_key - reads len bytes from a given key, and put them in buffer.
195 * Returns zero on success or a negative error on failure. Callers must
196 * hold applesmc_lock.
198 static int applesmc_read_key(const char* key
, u8
* buffer
, u8 len
)
202 if (len
> APPLESMC_MAX_DATA_LENGTH
) {
203 printk(KERN_ERR
"applesmc_read_key: cannot read more than "
204 "%d bytes\n", APPLESMC_MAX_DATA_LENGTH
);
208 outb(APPLESMC_READ_CMD
, APPLESMC_CMD_PORT
);
209 if (__wait_status(0x0c))
212 for (i
= 0; i
< 4; i
++) {
213 outb(key
[i
], APPLESMC_DATA_PORT
);
214 if (__wait_status(0x04))
218 printk(KERN_DEBUG
"<%s", key
);
220 outb(len
, APPLESMC_DATA_PORT
);
222 printk(KERN_DEBUG
">%x", len
);
224 for (i
= 0; i
< len
; i
++) {
225 if (__wait_status(0x05))
227 buffer
[i
] = inb(APPLESMC_DATA_PORT
);
229 printk(KERN_DEBUG
"<%x", buffer
[i
]);
232 printk(KERN_DEBUG
"\n");
238 * applesmc_write_key - writes len bytes from buffer to a given key.
239 * Returns zero on success or a negative error on failure. Callers must
240 * hold applesmc_lock.
242 static int applesmc_write_key(const char* key
, u8
* buffer
, u8 len
)
246 if (len
> APPLESMC_MAX_DATA_LENGTH
) {
247 printk(KERN_ERR
"applesmc_write_key: cannot write more than "
248 "%d bytes\n", APPLESMC_MAX_DATA_LENGTH
);
252 outb(APPLESMC_WRITE_CMD
, APPLESMC_CMD_PORT
);
253 if (__wait_status(0x0c))
256 for (i
= 0; i
< 4; i
++) {
257 outb(key
[i
], APPLESMC_DATA_PORT
);
258 if (__wait_status(0x04))
262 outb(len
, APPLESMC_DATA_PORT
);
264 for (i
= 0; i
< len
; i
++) {
265 if (__wait_status(0x04))
267 outb(buffer
[i
], APPLESMC_DATA_PORT
);
274 * applesmc_get_key_at_index - get key at index, and put the result in key
275 * (char[6]). Returns zero on success or a negative error on failure. Callers
276 * must hold applesmc_lock.
278 static int applesmc_get_key_at_index(int index
, char* key
)
282 readkey
[0] = index
>> 24;
283 readkey
[1] = index
>> 16;
284 readkey
[2] = index
>> 8;
287 outb(APPLESMC_GET_KEY_BY_INDEX_CMD
, APPLESMC_CMD_PORT
);
288 if (__wait_status(0x0c))
291 for (i
= 0; i
< 4; i
++) {
292 outb(readkey
[i
], APPLESMC_DATA_PORT
);
293 if (__wait_status(0x04))
297 outb(4, APPLESMC_DATA_PORT
);
299 for (i
= 0; i
< 4; i
++) {
300 if (__wait_status(0x05))
302 key
[i
] = inb(APPLESMC_DATA_PORT
);
310 * applesmc_get_key_type - get key type, and put the result in type (char[6]).
311 * Returns zero on success or a negative error on failure. Callers must
312 * hold applesmc_lock.
314 static int applesmc_get_key_type(char* key
, char* type
)
318 outb(APPLESMC_GET_KEY_TYPE_CMD
, APPLESMC_CMD_PORT
);
319 if (__wait_status(0x0c))
322 for (i
= 0; i
< 4; i
++) {
323 outb(key
[i
], APPLESMC_DATA_PORT
);
324 if (__wait_status(0x04))
328 outb(5, APPLESMC_DATA_PORT
);
330 for (i
= 0; i
< 6; i
++) {
331 if (__wait_status(0x05))
333 type
[i
] = inb(APPLESMC_DATA_PORT
);
341 * applesmc_read_motion_sensor - Read motion sensor (X, Y or Z). Callers must
342 * hold applesmc_lock.
344 static int applesmc_read_motion_sensor(int index
, s16
* value
)
351 ret
= applesmc_read_key(MOTION_SENSOR_X_KEY
, buffer
, 2);
354 ret
= applesmc_read_key(MOTION_SENSOR_Y_KEY
, buffer
, 2);
357 ret
= applesmc_read_key(MOTION_SENSOR_Z_KEY
, buffer
, 2);
363 *value
= ((s16
)buffer
[0] << 8) | buffer
[1];
369 * applesmc_device_init - initialize the accelerometer. Returns zero on success
370 * and negative error code on failure. Can sleep.
372 static int applesmc_device_init(void)
374 int total
, ret
= -ENXIO
;
377 if (!applesmc_accelerometer
)
380 mutex_lock(&applesmc_lock
);
382 for (total
= INIT_TIMEOUT_MSECS
; total
> 0; total
-= INIT_WAIT_MSECS
) {
384 printk(KERN_DEBUG
"applesmc try %d\n", total
);
385 if (!applesmc_read_key(MOTION_SENSOR_KEY
, buffer
, 2) &&
386 (buffer
[0] != 0x00 || buffer
[1] != 0x00)) {
387 if (total
== INIT_TIMEOUT_MSECS
) {
388 printk(KERN_DEBUG
"applesmc: device has"
389 " already been initialized"
390 " (0x%02x, 0x%02x).\n",
391 buffer
[0], buffer
[1]);
393 printk(KERN_DEBUG
"applesmc: device"
394 " successfully initialized"
395 " (0x%02x, 0x%02x).\n",
396 buffer
[0], buffer
[1]);
403 applesmc_write_key(MOTION_SENSOR_KEY
, buffer
, 2);
404 msleep(INIT_WAIT_MSECS
);
407 printk(KERN_WARNING
"applesmc: failed to init the device\n");
410 mutex_unlock(&applesmc_lock
);
415 * applesmc_get_fan_count - get the number of fans. Callers must NOT hold
418 static int applesmc_get_fan_count(void)
423 mutex_lock(&applesmc_lock
);
425 ret
= applesmc_read_key(FANS_COUNT
, buffer
, 1);
427 mutex_unlock(&applesmc_lock
);
434 /* Device model stuff */
435 static int applesmc_probe(struct platform_device
*dev
)
439 ret
= applesmc_device_init();
443 printk(KERN_INFO
"applesmc: device successfully initialized.\n");
447 static int applesmc_resume(struct platform_device
*dev
)
449 return applesmc_device_init();
452 static struct platform_driver applesmc_driver
= {
453 .probe
= applesmc_probe
,
454 .resume
= applesmc_resume
,
457 .owner
= THIS_MODULE
,
462 * applesmc_calibrate - Set our "resting" values. Callers must
463 * hold applesmc_lock.
465 static void applesmc_calibrate(void)
467 applesmc_read_motion_sensor(SENSOR_X
, &rest_x
);
468 applesmc_read_motion_sensor(SENSOR_Y
, &rest_y
);
472 static void applesmc_idev_poll(struct input_polled_dev
*dev
)
474 struct input_dev
*idev
= dev
->input
;
477 mutex_lock(&applesmc_lock
);
479 if (applesmc_read_motion_sensor(SENSOR_X
, &x
))
481 if (applesmc_read_motion_sensor(SENSOR_Y
, &y
))
485 input_report_abs(idev
, ABS_X
, x
- rest_x
);
486 input_report_abs(idev
, ABS_Y
, y
- rest_y
);
490 mutex_unlock(&applesmc_lock
);
495 static ssize_t
applesmc_name_show(struct device
*dev
,
496 struct device_attribute
*attr
, char *buf
)
498 return snprintf(buf
, PAGE_SIZE
, "applesmc\n");
501 static ssize_t
applesmc_position_show(struct device
*dev
,
502 struct device_attribute
*attr
, char *buf
)
507 mutex_lock(&applesmc_lock
);
509 ret
= applesmc_read_motion_sensor(SENSOR_X
, &x
);
512 ret
= applesmc_read_motion_sensor(SENSOR_Y
, &y
);
515 ret
= applesmc_read_motion_sensor(SENSOR_Z
, &z
);
520 mutex_unlock(&applesmc_lock
);
524 return snprintf(buf
, PAGE_SIZE
, "(%d,%d,%d)\n", x
, y
, z
);
527 static ssize_t
applesmc_light_show(struct device
*dev
,
528 struct device_attribute
*attr
, char *sysfsbuf
)
531 u8 left
= 0, right
= 0;
534 mutex_lock(&applesmc_lock
);
536 ret
= applesmc_read_key(LIGHT_SENSOR_LEFT_KEY
, buffer
, 6);
540 ret
= applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY
, buffer
, 6);
544 mutex_unlock(&applesmc_lock
);
548 return snprintf(sysfsbuf
, PAGE_SIZE
, "(%d,%d)\n", left
, right
);
551 /* Displays degree Celsius * 1000 */
552 static ssize_t
applesmc_show_temperature(struct device
*dev
,
553 struct device_attribute
*devattr
, char *sysfsbuf
)
558 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
560 temperature_sensors_sets
[applesmc_temperature_set
][attr
->index
];
562 mutex_lock(&applesmc_lock
);
564 ret
= applesmc_read_key(key
, buffer
, 2);
565 temp
= buffer
[0]*1000;
566 temp
+= (buffer
[1] >> 6) * 250;
568 mutex_unlock(&applesmc_lock
);
573 return snprintf(sysfsbuf
, PAGE_SIZE
, "%u\n", temp
);
576 static ssize_t
applesmc_show_fan_speed(struct device
*dev
,
577 struct device_attribute
*attr
, char *sysfsbuf
)
580 unsigned int speed
= 0;
583 struct sensor_device_attribute_2
*sensor_attr
=
584 to_sensor_dev_attr_2(attr
);
586 newkey
[0] = fan_speed_keys
[sensor_attr
->nr
][0];
587 newkey
[1] = '0' + sensor_attr
->index
;
588 newkey
[2] = fan_speed_keys
[sensor_attr
->nr
][2];
589 newkey
[3] = fan_speed_keys
[sensor_attr
->nr
][3];
592 mutex_lock(&applesmc_lock
);
594 ret
= applesmc_read_key(newkey
, buffer
, 2);
595 speed
= ((buffer
[0] << 8 | buffer
[1]) >> 2);
597 mutex_unlock(&applesmc_lock
);
601 return snprintf(sysfsbuf
, PAGE_SIZE
, "%u\n", speed
);
604 static ssize_t
applesmc_store_fan_speed(struct device
*dev
,
605 struct device_attribute
*attr
,
606 const char *sysfsbuf
, size_t count
)
612 struct sensor_device_attribute_2
*sensor_attr
=
613 to_sensor_dev_attr_2(attr
);
615 speed
= simple_strtoul(sysfsbuf
, NULL
, 10);
617 if (speed
> 0x4000) /* Bigger than a 14-bit value */
620 newkey
[0] = fan_speed_keys
[sensor_attr
->nr
][0];
621 newkey
[1] = '0' + sensor_attr
->index
;
622 newkey
[2] = fan_speed_keys
[sensor_attr
->nr
][2];
623 newkey
[3] = fan_speed_keys
[sensor_attr
->nr
][3];
626 mutex_lock(&applesmc_lock
);
628 buffer
[0] = (speed
>> 6) & 0xff;
629 buffer
[1] = (speed
<< 2) & 0xff;
630 ret
= applesmc_write_key(newkey
, buffer
, 2);
632 mutex_unlock(&applesmc_lock
);
639 static ssize_t
applesmc_show_fan_manual(struct device
*dev
,
640 struct device_attribute
*devattr
, char *sysfsbuf
)
645 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
647 mutex_lock(&applesmc_lock
);
649 ret
= applesmc_read_key(FANS_MANUAL
, buffer
, 2);
650 manual
= ((buffer
[0] << 8 | buffer
[1]) >> attr
->index
) & 0x01;
652 mutex_unlock(&applesmc_lock
);
656 return snprintf(sysfsbuf
, PAGE_SIZE
, "%d\n", manual
);
659 static ssize_t
applesmc_store_fan_manual(struct device
*dev
,
660 struct device_attribute
*devattr
,
661 const char *sysfsbuf
, size_t count
)
667 struct sensor_device_attribute
*attr
= to_sensor_dev_attr(devattr
);
669 input
= simple_strtoul(sysfsbuf
, NULL
, 10);
671 mutex_lock(&applesmc_lock
);
673 ret
= applesmc_read_key(FANS_MANUAL
, buffer
, 2);
674 val
= (buffer
[0] << 8 | buffer
[1]);
679 val
= val
| (0x01 << attr
->index
);
681 val
= val
& ~(0x01 << attr
->index
);
683 buffer
[0] = (val
>> 8) & 0xFF;
684 buffer
[1] = val
& 0xFF;
686 ret
= applesmc_write_key(FANS_MANUAL
, buffer
, 2);
689 mutex_unlock(&applesmc_lock
);
696 static ssize_t
applesmc_show_fan_position(struct device
*dev
,
697 struct device_attribute
*attr
, char *sysfsbuf
)
702 struct sensor_device_attribute_2
*sensor_attr
=
703 to_sensor_dev_attr_2(attr
);
705 newkey
[0] = FAN_POSITION
[0];
706 newkey
[1] = '0' + sensor_attr
->index
;
707 newkey
[2] = FAN_POSITION
[2];
708 newkey
[3] = FAN_POSITION
[3];
711 mutex_lock(&applesmc_lock
);
713 ret
= applesmc_read_key(newkey
, buffer
, 16);
716 mutex_unlock(&applesmc_lock
);
720 return snprintf(sysfsbuf
, PAGE_SIZE
, "%s\n", buffer
+4);
723 static ssize_t
applesmc_calibrate_show(struct device
*dev
,
724 struct device_attribute
*attr
, char *sysfsbuf
)
726 return snprintf(sysfsbuf
, PAGE_SIZE
, "(%d,%d)\n", rest_x
, rest_y
);
729 static ssize_t
applesmc_calibrate_store(struct device
*dev
,
730 struct device_attribute
*attr
, const char *sysfsbuf
, size_t count
)
732 mutex_lock(&applesmc_lock
);
733 applesmc_calibrate();
734 mutex_unlock(&applesmc_lock
);
739 /* Store the next backlight value to be written by the work */
740 static unsigned int backlight_value
;
742 static void applesmc_backlight_set(struct work_struct
*work
)
746 mutex_lock(&applesmc_lock
);
747 buffer
[0] = backlight_value
;
749 applesmc_write_key(BACKLIGHT_KEY
, buffer
, 2);
750 mutex_unlock(&applesmc_lock
);
752 static DECLARE_WORK(backlight_work
, &applesmc_backlight_set
);
754 static void applesmc_brightness_set(struct led_classdev
*led_cdev
,
755 enum led_brightness value
)
759 backlight_value
= value
;
760 ret
= queue_work(applesmc_led_wq
, &backlight_work
);
763 printk(KERN_DEBUG
"applesmc: work was already on the queue.\n");
766 static ssize_t
applesmc_key_count_show(struct device
*dev
,
767 struct device_attribute
*attr
, char *sysfsbuf
)
773 mutex_lock(&applesmc_lock
);
775 ret
= applesmc_read_key(KEY_COUNT_KEY
, buffer
, 4);
776 count
= ((u32
)buffer
[0]<<24) + ((u32
)buffer
[1]<<16) +
777 ((u32
)buffer
[2]<<8) + buffer
[3];
779 mutex_unlock(&applesmc_lock
);
783 return snprintf(sysfsbuf
, PAGE_SIZE
, "%d\n", count
);
786 static ssize_t
applesmc_key_at_index_read_show(struct device
*dev
,
787 struct device_attribute
*attr
, char *sysfsbuf
)
793 mutex_lock(&applesmc_lock
);
795 ret
= applesmc_get_key_at_index(key_at_index
, key
);
797 if (ret
|| !key
[0]) {
798 mutex_unlock(&applesmc_lock
);
803 ret
= applesmc_get_key_type(key
, info
);
806 mutex_unlock(&applesmc_lock
);
812 * info[0] maximum value (APPLESMC_MAX_DATA_LENGTH) is much lower than
813 * PAGE_SIZE, so we don't need any checks before writing to sysfsbuf.
815 ret
= applesmc_read_key(key
, sysfsbuf
, info
[0]);
817 mutex_unlock(&applesmc_lock
);
826 static ssize_t
applesmc_key_at_index_data_length_show(struct device
*dev
,
827 struct device_attribute
*attr
, char *sysfsbuf
)
833 mutex_lock(&applesmc_lock
);
835 ret
= applesmc_get_key_at_index(key_at_index
, key
);
837 if (ret
|| !key
[0]) {
838 mutex_unlock(&applesmc_lock
);
843 ret
= applesmc_get_key_type(key
, info
);
845 mutex_unlock(&applesmc_lock
);
848 return snprintf(sysfsbuf
, PAGE_SIZE
, "%d\n", info
[0]);
853 static ssize_t
applesmc_key_at_index_type_show(struct device
*dev
,
854 struct device_attribute
*attr
, char *sysfsbuf
)
860 mutex_lock(&applesmc_lock
);
862 ret
= applesmc_get_key_at_index(key_at_index
, key
);
864 if (ret
|| !key
[0]) {
865 mutex_unlock(&applesmc_lock
);
870 ret
= applesmc_get_key_type(key
, info
);
872 mutex_unlock(&applesmc_lock
);
875 return snprintf(sysfsbuf
, PAGE_SIZE
, "%s\n", info
+1);
880 static ssize_t
applesmc_key_at_index_name_show(struct device
*dev
,
881 struct device_attribute
*attr
, char *sysfsbuf
)
886 mutex_lock(&applesmc_lock
);
888 ret
= applesmc_get_key_at_index(key_at_index
, key
);
890 mutex_unlock(&applesmc_lock
);
893 return snprintf(sysfsbuf
, PAGE_SIZE
, "%s\n", key
);
898 static ssize_t
applesmc_key_at_index_show(struct device
*dev
,
899 struct device_attribute
*attr
, char *sysfsbuf
)
901 return snprintf(sysfsbuf
, PAGE_SIZE
, "%d\n", key_at_index
);
904 static ssize_t
applesmc_key_at_index_store(struct device
*dev
,
905 struct device_attribute
*attr
, const char *sysfsbuf
, size_t count
)
907 mutex_lock(&applesmc_lock
);
909 key_at_index
= simple_strtoul(sysfsbuf
, NULL
, 10);
911 mutex_unlock(&applesmc_lock
);
916 static struct led_classdev applesmc_backlight
= {
917 .name
= "smc::kbd_backlight",
918 .default_trigger
= "nand-disk",
919 .brightness_set
= applesmc_brightness_set
,
922 static DEVICE_ATTR(name
, 0444, applesmc_name_show
, NULL
);
924 static DEVICE_ATTR(position
, 0444, applesmc_position_show
, NULL
);
925 static DEVICE_ATTR(calibrate
, 0644,
926 applesmc_calibrate_show
, applesmc_calibrate_store
);
928 static struct attribute
*accelerometer_attributes
[] = {
929 &dev_attr_position
.attr
,
930 &dev_attr_calibrate
.attr
,
934 static const struct attribute_group accelerometer_attributes_group
=
935 { .attrs
= accelerometer_attributes
};
937 static DEVICE_ATTR(light
, 0444, applesmc_light_show
, NULL
);
939 static DEVICE_ATTR(key_count
, 0444, applesmc_key_count_show
, NULL
);
940 static DEVICE_ATTR(key_at_index
, 0644,
941 applesmc_key_at_index_show
, applesmc_key_at_index_store
);
942 static DEVICE_ATTR(key_at_index_name
, 0444,
943 applesmc_key_at_index_name_show
, NULL
);
944 static DEVICE_ATTR(key_at_index_type
, 0444,
945 applesmc_key_at_index_type_show
, NULL
);
946 static DEVICE_ATTR(key_at_index_data_length
, 0444,
947 applesmc_key_at_index_data_length_show
, NULL
);
948 static DEVICE_ATTR(key_at_index_data
, 0444,
949 applesmc_key_at_index_read_show
, NULL
);
951 static struct attribute
*key_enumeration_attributes
[] = {
952 &dev_attr_key_count
.attr
,
953 &dev_attr_key_at_index
.attr
,
954 &dev_attr_key_at_index_name
.attr
,
955 &dev_attr_key_at_index_type
.attr
,
956 &dev_attr_key_at_index_data_length
.attr
,
957 &dev_attr_key_at_index_data
.attr
,
961 static const struct attribute_group key_enumeration_group
=
962 { .attrs
= key_enumeration_attributes
};
965 * Macro defining SENSOR_DEVICE_ATTR for a fan sysfs entries.
966 * - show actual speed
967 * - show/store minimum speed
968 * - show maximum speed
970 * - show/store target speed
971 * - show/store manual mode
973 #define sysfs_fan_speeds_offset(offset) \
974 static SENSOR_DEVICE_ATTR_2(fan##offset##_input, S_IRUGO, \
975 applesmc_show_fan_speed, NULL, 0, offset-1); \
977 static SENSOR_DEVICE_ATTR_2(fan##offset##_min, S_IRUGO | S_IWUSR, \
978 applesmc_show_fan_speed, applesmc_store_fan_speed, 1, offset-1); \
980 static SENSOR_DEVICE_ATTR_2(fan##offset##_max, S_IRUGO, \
981 applesmc_show_fan_speed, NULL, 2, offset-1); \
983 static SENSOR_DEVICE_ATTR_2(fan##offset##_safe, S_IRUGO, \
984 applesmc_show_fan_speed, NULL, 3, offset-1); \
986 static SENSOR_DEVICE_ATTR_2(fan##offset##_output, S_IRUGO | S_IWUSR, \
987 applesmc_show_fan_speed, applesmc_store_fan_speed, 4, offset-1); \
989 static SENSOR_DEVICE_ATTR(fan##offset##_manual, S_IRUGO | S_IWUSR, \
990 applesmc_show_fan_manual, applesmc_store_fan_manual, offset-1); \
992 static SENSOR_DEVICE_ATTR(fan##offset##_label, S_IRUGO, \
993 applesmc_show_fan_position, NULL, offset-1); \
995 static struct attribute *fan##offset##_attributes[] = { \
996 &sensor_dev_attr_fan##offset##_input.dev_attr.attr, \
997 &sensor_dev_attr_fan##offset##_min.dev_attr.attr, \
998 &sensor_dev_attr_fan##offset##_max.dev_attr.attr, \
999 &sensor_dev_attr_fan##offset##_safe.dev_attr.attr, \
1000 &sensor_dev_attr_fan##offset##_output.dev_attr.attr, \
1001 &sensor_dev_attr_fan##offset##_manual.dev_attr.attr, \
1002 &sensor_dev_attr_fan##offset##_label.dev_attr.attr, \
1007 * Create the needed functions for each fan using the macro defined above
1008 * (4 fans are supported)
1010 sysfs_fan_speeds_offset(1);
1011 sysfs_fan_speeds_offset(2);
1012 sysfs_fan_speeds_offset(3);
1013 sysfs_fan_speeds_offset(4);
1015 static const struct attribute_group fan_attribute_groups
[] = {
1016 { .attrs
= fan1_attributes
},
1017 { .attrs
= fan2_attributes
},
1018 { .attrs
= fan3_attributes
},
1019 { .attrs
= fan4_attributes
},
1023 * Temperature sensors sysfs entries.
1025 static SENSOR_DEVICE_ATTR(temp1_input
, S_IRUGO
,
1026 applesmc_show_temperature
, NULL
, 0);
1027 static SENSOR_DEVICE_ATTR(temp2_input
, S_IRUGO
,
1028 applesmc_show_temperature
, NULL
, 1);
1029 static SENSOR_DEVICE_ATTR(temp3_input
, S_IRUGO
,
1030 applesmc_show_temperature
, NULL
, 2);
1031 static SENSOR_DEVICE_ATTR(temp4_input
, S_IRUGO
,
1032 applesmc_show_temperature
, NULL
, 3);
1033 static SENSOR_DEVICE_ATTR(temp5_input
, S_IRUGO
,
1034 applesmc_show_temperature
, NULL
, 4);
1035 static SENSOR_DEVICE_ATTR(temp6_input
, S_IRUGO
,
1036 applesmc_show_temperature
, NULL
, 5);
1037 static SENSOR_DEVICE_ATTR(temp7_input
, S_IRUGO
,
1038 applesmc_show_temperature
, NULL
, 6);
1039 static SENSOR_DEVICE_ATTR(temp8_input
, S_IRUGO
,
1040 applesmc_show_temperature
, NULL
, 7);
1041 static SENSOR_DEVICE_ATTR(temp9_input
, S_IRUGO
,
1042 applesmc_show_temperature
, NULL
, 8);
1043 static SENSOR_DEVICE_ATTR(temp10_input
, S_IRUGO
,
1044 applesmc_show_temperature
, NULL
, 9);
1045 static SENSOR_DEVICE_ATTR(temp11_input
, S_IRUGO
,
1046 applesmc_show_temperature
, NULL
, 10);
1047 static SENSOR_DEVICE_ATTR(temp12_input
, S_IRUGO
,
1048 applesmc_show_temperature
, NULL
, 11);
1049 static SENSOR_DEVICE_ATTR(temp13_input
, S_IRUGO
,
1050 applesmc_show_temperature
, NULL
, 12);
1051 static SENSOR_DEVICE_ATTR(temp14_input
, S_IRUGO
,
1052 applesmc_show_temperature
, NULL
, 13);
1053 static SENSOR_DEVICE_ATTR(temp15_input
, S_IRUGO
,
1054 applesmc_show_temperature
, NULL
, 14);
1055 static SENSOR_DEVICE_ATTR(temp16_input
, S_IRUGO
,
1056 applesmc_show_temperature
, NULL
, 15);
1057 static SENSOR_DEVICE_ATTR(temp17_input
, S_IRUGO
,
1058 applesmc_show_temperature
, NULL
, 16);
1059 static SENSOR_DEVICE_ATTR(temp18_input
, S_IRUGO
,
1060 applesmc_show_temperature
, NULL
, 17);
1061 static SENSOR_DEVICE_ATTR(temp19_input
, S_IRUGO
,
1062 applesmc_show_temperature
, NULL
, 18);
1063 static SENSOR_DEVICE_ATTR(temp20_input
, S_IRUGO
,
1064 applesmc_show_temperature
, NULL
, 19);
1065 static SENSOR_DEVICE_ATTR(temp21_input
, S_IRUGO
,
1066 applesmc_show_temperature
, NULL
, 20);
1067 static SENSOR_DEVICE_ATTR(temp22_input
, S_IRUGO
,
1068 applesmc_show_temperature
, NULL
, 21);
1069 static SENSOR_DEVICE_ATTR(temp23_input
, S_IRUGO
,
1070 applesmc_show_temperature
, NULL
, 22);
1071 static SENSOR_DEVICE_ATTR(temp24_input
, S_IRUGO
,
1072 applesmc_show_temperature
, NULL
, 23);
1073 static SENSOR_DEVICE_ATTR(temp25_input
, S_IRUGO
,
1074 applesmc_show_temperature
, NULL
, 24);
1075 static SENSOR_DEVICE_ATTR(temp26_input
, S_IRUGO
,
1076 applesmc_show_temperature
, NULL
, 25);
1077 static SENSOR_DEVICE_ATTR(temp27_input
, S_IRUGO
,
1078 applesmc_show_temperature
, NULL
, 26);
1079 static SENSOR_DEVICE_ATTR(temp28_input
, S_IRUGO
,
1080 applesmc_show_temperature
, NULL
, 27);
1081 static SENSOR_DEVICE_ATTR(temp29_input
, S_IRUGO
,
1082 applesmc_show_temperature
, NULL
, 28);
1083 static SENSOR_DEVICE_ATTR(temp30_input
, S_IRUGO
,
1084 applesmc_show_temperature
, NULL
, 29);
1085 static SENSOR_DEVICE_ATTR(temp31_input
, S_IRUGO
,
1086 applesmc_show_temperature
, NULL
, 30);
1087 static SENSOR_DEVICE_ATTR(temp32_input
, S_IRUGO
,
1088 applesmc_show_temperature
, NULL
, 31);
1089 static SENSOR_DEVICE_ATTR(temp33_input
, S_IRUGO
,
1090 applesmc_show_temperature
, NULL
, 32);
1091 static SENSOR_DEVICE_ATTR(temp34_input
, S_IRUGO
,
1092 applesmc_show_temperature
, NULL
, 33);
1093 static SENSOR_DEVICE_ATTR(temp35_input
, S_IRUGO
,
1094 applesmc_show_temperature
, NULL
, 34);
1096 static struct attribute
*temperature_attributes
[] = {
1097 &sensor_dev_attr_temp1_input
.dev_attr
.attr
,
1098 &sensor_dev_attr_temp2_input
.dev_attr
.attr
,
1099 &sensor_dev_attr_temp3_input
.dev_attr
.attr
,
1100 &sensor_dev_attr_temp4_input
.dev_attr
.attr
,
1101 &sensor_dev_attr_temp5_input
.dev_attr
.attr
,
1102 &sensor_dev_attr_temp6_input
.dev_attr
.attr
,
1103 &sensor_dev_attr_temp7_input
.dev_attr
.attr
,
1104 &sensor_dev_attr_temp8_input
.dev_attr
.attr
,
1105 &sensor_dev_attr_temp9_input
.dev_attr
.attr
,
1106 &sensor_dev_attr_temp10_input
.dev_attr
.attr
,
1107 &sensor_dev_attr_temp11_input
.dev_attr
.attr
,
1108 &sensor_dev_attr_temp12_input
.dev_attr
.attr
,
1109 &sensor_dev_attr_temp13_input
.dev_attr
.attr
,
1110 &sensor_dev_attr_temp14_input
.dev_attr
.attr
,
1111 &sensor_dev_attr_temp15_input
.dev_attr
.attr
,
1112 &sensor_dev_attr_temp16_input
.dev_attr
.attr
,
1113 &sensor_dev_attr_temp17_input
.dev_attr
.attr
,
1114 &sensor_dev_attr_temp18_input
.dev_attr
.attr
,
1115 &sensor_dev_attr_temp19_input
.dev_attr
.attr
,
1116 &sensor_dev_attr_temp20_input
.dev_attr
.attr
,
1117 &sensor_dev_attr_temp21_input
.dev_attr
.attr
,
1118 &sensor_dev_attr_temp22_input
.dev_attr
.attr
,
1119 &sensor_dev_attr_temp23_input
.dev_attr
.attr
,
1120 &sensor_dev_attr_temp24_input
.dev_attr
.attr
,
1121 &sensor_dev_attr_temp25_input
.dev_attr
.attr
,
1122 &sensor_dev_attr_temp26_input
.dev_attr
.attr
,
1123 &sensor_dev_attr_temp27_input
.dev_attr
.attr
,
1124 &sensor_dev_attr_temp28_input
.dev_attr
.attr
,
1125 &sensor_dev_attr_temp29_input
.dev_attr
.attr
,
1126 &sensor_dev_attr_temp30_input
.dev_attr
.attr
,
1127 &sensor_dev_attr_temp31_input
.dev_attr
.attr
,
1128 &sensor_dev_attr_temp32_input
.dev_attr
.attr
,
1129 &sensor_dev_attr_temp33_input
.dev_attr
.attr
,
1130 &sensor_dev_attr_temp34_input
.dev_attr
.attr
,
1131 &sensor_dev_attr_temp35_input
.dev_attr
.attr
,
1135 static const struct attribute_group temperature_attributes_group
=
1136 { .attrs
= temperature_attributes
};
1141 * applesmc_dmi_match - found a match. return one, short-circuiting the hunt.
1143 static int applesmc_dmi_match(const struct dmi_system_id
*id
)
1146 struct dmi_match_data
* dmi_data
= id
->driver_data
;
1147 printk(KERN_INFO
"applesmc: %s detected:\n", id
->ident
);
1148 applesmc_accelerometer
= dmi_data
->accelerometer
;
1149 printk(KERN_INFO
"applesmc: - Model %s accelerometer\n",
1150 applesmc_accelerometer
? "with" : "without");
1151 applesmc_light
= dmi_data
->light
;
1152 printk(KERN_INFO
"applesmc: - Model %s light sensors and backlight\n",
1153 applesmc_light
? "with" : "without");
1155 applesmc_temperature_set
= dmi_data
->temperature_set
;
1156 while (temperature_sensors_sets
[applesmc_temperature_set
][i
] != NULL
)
1158 printk(KERN_INFO
"applesmc: - Model with %d temperature sensors\n", i
);
1162 /* Create accelerometer ressources */
1163 static int applesmc_create_accelerometer(void)
1165 struct input_dev
*idev
;
1168 ret
= sysfs_create_group(&pdev
->dev
.kobj
,
1169 &accelerometer_attributes_group
);
1173 applesmc_idev
= input_allocate_polled_device();
1174 if (!applesmc_idev
) {
1179 applesmc_idev
->poll
= applesmc_idev_poll
;
1180 applesmc_idev
->poll_interval
= APPLESMC_POLL_INTERVAL
;
1182 /* initial calibrate for the input device */
1183 applesmc_calibrate();
1185 /* initialize the input device */
1186 idev
= applesmc_idev
->input
;
1187 idev
->name
= "applesmc";
1188 idev
->id
.bustype
= BUS_HOST
;
1189 idev
->dev
.parent
= &pdev
->dev
;
1190 idev
->evbit
[0] = BIT_MASK(EV_ABS
);
1191 input_set_abs_params(idev
, ABS_X
,
1192 -256, 256, APPLESMC_INPUT_FUZZ
, APPLESMC_INPUT_FLAT
);
1193 input_set_abs_params(idev
, ABS_Y
,
1194 -256, 256, APPLESMC_INPUT_FUZZ
, APPLESMC_INPUT_FLAT
);
1196 ret
= input_register_polled_device(applesmc_idev
);
1203 input_free_polled_device(applesmc_idev
);
1206 sysfs_remove_group(&pdev
->dev
.kobj
, &accelerometer_attributes_group
);
1209 printk(KERN_WARNING
"applesmc: driver init failed (ret=%d)!\n", ret
);
1213 /* Release all ressources used by the accelerometer */
1214 static void applesmc_release_accelerometer(void)
1216 input_unregister_polled_device(applesmc_idev
);
1217 input_free_polled_device(applesmc_idev
);
1218 sysfs_remove_group(&pdev
->dev
.kobj
, &accelerometer_attributes_group
);
1221 static __initdata
struct dmi_match_data applesmc_dmi_data
[] = {
1222 /* MacBook Pro: accelerometer, backlight and temperature set 0 */
1223 { .accelerometer
= 1, .light
= 1, .temperature_set
= 0 },
1224 /* MacBook2: accelerometer and temperature set 1 */
1225 { .accelerometer
= 1, .light
= 0, .temperature_set
= 1 },
1226 /* MacBook: accelerometer and temperature set 2 */
1227 { .accelerometer
= 1, .light
= 0, .temperature_set
= 2 },
1228 /* MacMini: temperature set 3 */
1229 { .accelerometer
= 0, .light
= 0, .temperature_set
= 3 },
1230 /* MacPro: temperature set 4 */
1231 { .accelerometer
= 0, .light
= 0, .temperature_set
= 4 },
1232 /* iMac: temperature set 5 */
1233 { .accelerometer
= 0, .light
= 0, .temperature_set
= 5 },
1234 /* MacBook3: accelerometer and temperature set 6 */
1235 { .accelerometer
= 1, .light
= 0, .temperature_set
= 6 },
1238 /* Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1".
1239 * So we need to put "Apple MacBook Pro" before "Apple MacBook". */
1240 static __initdata
struct dmi_system_id applesmc_whitelist
[] = {
1241 { applesmc_dmi_match
, "Apple MacBook Pro", {
1242 DMI_MATCH(DMI_BOARD_VENDOR
,"Apple"),
1243 DMI_MATCH(DMI_PRODUCT_NAME
,"MacBookPro") },
1244 (void*)&applesmc_dmi_data
[0]},
1245 { applesmc_dmi_match
, "Apple MacBook (v2)", {
1246 DMI_MATCH(DMI_BOARD_VENDOR
,"Apple"),
1247 DMI_MATCH(DMI_PRODUCT_NAME
,"MacBook2") },
1248 (void*)&applesmc_dmi_data
[1]},
1249 { applesmc_dmi_match
, "Apple MacBook (v3)", {
1250 DMI_MATCH(DMI_BOARD_VENDOR
,"Apple"),
1251 DMI_MATCH(DMI_PRODUCT_NAME
,"MacBook3") },
1252 (void*)&applesmc_dmi_data
[6]},
1253 { applesmc_dmi_match
, "Apple MacBook", {
1254 DMI_MATCH(DMI_BOARD_VENDOR
,"Apple"),
1255 DMI_MATCH(DMI_PRODUCT_NAME
,"MacBook") },
1256 (void*)&applesmc_dmi_data
[2]},
1257 { applesmc_dmi_match
, "Apple Macmini", {
1258 DMI_MATCH(DMI_BOARD_VENDOR
,"Apple"),
1259 DMI_MATCH(DMI_PRODUCT_NAME
,"Macmini") },
1260 (void*)&applesmc_dmi_data
[3]},
1261 { applesmc_dmi_match
, "Apple MacPro2", {
1262 DMI_MATCH(DMI_BOARD_VENDOR
,"Apple"),
1263 DMI_MATCH(DMI_PRODUCT_NAME
,"MacPro2") },
1264 (void*)&applesmc_dmi_data
[4]},
1265 { applesmc_dmi_match
, "Apple iMac", {
1266 DMI_MATCH(DMI_BOARD_VENDOR
,"Apple"),
1267 DMI_MATCH(DMI_PRODUCT_NAME
,"iMac") },
1268 (void*)&applesmc_dmi_data
[5]},
1272 static int __init
applesmc_init(void)
1278 if (!dmi_check_system(applesmc_whitelist
)) {
1279 printk(KERN_WARNING
"applesmc: supported laptop not found!\n");
1284 if (!request_region(APPLESMC_DATA_PORT
, APPLESMC_NR_PORTS
,
1290 ret
= platform_driver_register(&applesmc_driver
);
1294 pdev
= platform_device_register_simple("applesmc", APPLESMC_DATA_PORT
,
1297 ret
= PTR_ERR(pdev
);
1301 ret
= sysfs_create_file(&pdev
->dev
.kobj
, &dev_attr_name
.attr
);
1305 /* Create key enumeration sysfs files */
1306 ret
= sysfs_create_group(&pdev
->dev
.kobj
, &key_enumeration_group
);
1310 /* create fan files */
1311 count
= applesmc_get_fan_count();
1313 printk(KERN_ERR
"applesmc: Cannot get the number of fans.\n");
1315 printk(KERN_INFO
"applesmc: %d fans found.\n", count
);
1319 printk(KERN_WARNING
"applesmc: More than 4 fans found,"
1320 " but at most 4 fans are supported"
1321 " by the driver.\n");
1323 ret
= sysfs_create_group(&pdev
->dev
.kobj
,
1324 &fan_attribute_groups
[3]);
1326 goto out_key_enumeration
;
1328 ret
= sysfs_create_group(&pdev
->dev
.kobj
,
1329 &fan_attribute_groups
[2]);
1331 goto out_key_enumeration
;
1333 ret
= sysfs_create_group(&pdev
->dev
.kobj
,
1334 &fan_attribute_groups
[1]);
1336 goto out_key_enumeration
;
1338 ret
= sysfs_create_group(&pdev
->dev
.kobj
,
1339 &fan_attribute_groups
[0]);
1348 temperature_sensors_sets
[applesmc_temperature_set
][i
] != NULL
;
1350 if (temperature_attributes
[i
] == NULL
) {
1351 printk(KERN_ERR
"applesmc: More temperature sensors "
1352 "in temperature_sensors_sets (at least %i)"
1353 "than available sysfs files in "
1354 "temperature_attributes (%i), please report "
1355 "this bug.\n", i
, i
-1);
1356 goto out_temperature
;
1358 ret
= sysfs_create_file(&pdev
->dev
.kobj
,
1359 temperature_attributes
[i
]);
1361 goto out_temperature
;
1364 if (applesmc_accelerometer
) {
1365 ret
= applesmc_create_accelerometer();
1367 goto out_temperature
;
1370 if (applesmc_light
) {
1371 /* Add light sensor file */
1372 ret
= sysfs_create_file(&pdev
->dev
.kobj
, &dev_attr_light
.attr
);
1374 goto out_accelerometer
;
1376 /* Create the workqueue */
1377 applesmc_led_wq
= create_singlethread_workqueue("applesmc-led");
1378 if (!applesmc_led_wq
) {
1380 goto out_light_sysfs
;
1383 /* register as a led device */
1384 ret
= led_classdev_register(&pdev
->dev
, &applesmc_backlight
);
1389 hwmon_dev
= hwmon_device_register(&pdev
->dev
);
1390 if (IS_ERR(hwmon_dev
)) {
1391 ret
= PTR_ERR(hwmon_dev
);
1392 goto out_light_ledclass
;
1395 printk(KERN_INFO
"applesmc: driver successfully loaded.\n");
1401 led_classdev_unregister(&applesmc_backlight
);
1404 destroy_workqueue(applesmc_led_wq
);
1407 sysfs_remove_file(&pdev
->dev
.kobj
, &dev_attr_light
.attr
);
1409 if (applesmc_accelerometer
)
1410 applesmc_release_accelerometer();
1412 sysfs_remove_group(&pdev
->dev
.kobj
, &temperature_attributes_group
);
1413 sysfs_remove_group(&pdev
->dev
.kobj
, &fan_attribute_groups
[0]);
1415 sysfs_remove_group(&pdev
->dev
.kobj
, &fan_attribute_groups
[1]);
1416 out_key_enumeration
:
1417 sysfs_remove_group(&pdev
->dev
.kobj
, &key_enumeration_group
);
1419 sysfs_remove_file(&pdev
->dev
.kobj
, &dev_attr_name
.attr
);
1421 platform_device_unregister(pdev
);
1423 platform_driver_unregister(&applesmc_driver
);
1425 release_region(APPLESMC_DATA_PORT
, APPLESMC_NR_PORTS
);
1427 printk(KERN_WARNING
"applesmc: driver init failed (ret=%d)!\n", ret
);
1431 static void __exit
applesmc_exit(void)
1433 hwmon_device_unregister(hwmon_dev
);
1434 if (applesmc_light
) {
1435 led_classdev_unregister(&applesmc_backlight
);
1436 destroy_workqueue(applesmc_led_wq
);
1437 sysfs_remove_file(&pdev
->dev
.kobj
, &dev_attr_light
.attr
);
1439 if (applesmc_accelerometer
)
1440 applesmc_release_accelerometer();
1441 sysfs_remove_group(&pdev
->dev
.kobj
, &temperature_attributes_group
);
1442 sysfs_remove_group(&pdev
->dev
.kobj
, &fan_attribute_groups
[0]);
1443 sysfs_remove_group(&pdev
->dev
.kobj
, &fan_attribute_groups
[1]);
1444 sysfs_remove_group(&pdev
->dev
.kobj
, &key_enumeration_group
);
1445 sysfs_remove_file(&pdev
->dev
.kobj
, &dev_attr_name
.attr
);
1446 platform_device_unregister(pdev
);
1447 platform_driver_unregister(&applesmc_driver
);
1448 release_region(APPLESMC_DATA_PORT
, APPLESMC_NR_PORTS
);
1450 printk(KERN_INFO
"applesmc: driver unloaded.\n");
1453 module_init(applesmc_init
);
1454 module_exit(applesmc_exit
);
1456 MODULE_AUTHOR("Nicolas Boichat");
1457 MODULE_DESCRIPTION("Apple SMC");
1458 MODULE_LICENSE("GPL v2");