blob: 62c2e32e25ef6823290380074d50829af30e5751 [file] [log] [blame]
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001/*
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>
Henrik Rydberg41e71f92010-11-09 15:15:11 +00007 * Copyright (C) 2010 Henrik Rydberg <rydberg@euromail.se>
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07008 *
9 * Based on hdaps.c driver:
10 * Copyright (C) 2005 Robert Love <rml@novell.com>
Jesper Juhlaa8521e2012-06-20 21:18:48 +020011 * Copyright (C) 2005 Jesper Juhl <jj@chaosbits.net>
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070012 *
13 * Fan control based on smcFanControl:
14 * Copyright (C) 2006 Hendrik Holtmann <holtmann@mac.com>
15 *
16 * This program is free software; you can redistribute it and/or modify it
17 * under the terms of the GNU General Public License v2 as published by the
18 * Free Software Foundation.
19 *
20 * This program is distributed in the hope that it will be useful, but WITHOUT
21 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
22 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
23 * more details.
24 *
25 * You should have received a copy of the GNU General Public License along with
26 * this program; if not, write to the Free Software Foundation, Inc.,
27 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
28 */
29
Joe Perches1ee7c712010-11-09 15:15:03 +000030#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070032#include <linux/delay.h>
33#include <linux/platform_device.h>
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -040034#include <linux/input-polldev.h>
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070035#include <linux/kernel.h>
Henrik Rydberg58745832010-11-10 10:58:03 +000036#include <linux/slab.h>
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070037#include <linux/module.h>
38#include <linux/timer.h>
39#include <linux/dmi.h>
40#include <linux/mutex.h>
41#include <linux/hwmon-sysfs.h>
H Hartley Sweeten6055fae2009-09-15 17:18:13 +020042#include <linux/io.h>
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070043#include <linux/leds.h>
44#include <linux/hwmon.h>
45#include <linux/workqueue.h>
Jean Delvarefa845742012-10-10 15:25:56 +020046#include <linux/err.h>
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070047
48/* data port used by Apple SMC */
49#define APPLESMC_DATA_PORT 0x300
50/* command/status port used by Apple SMC */
51#define APPLESMC_CMD_PORT 0x304
52
53#define APPLESMC_NR_PORTS 32 /* 0x300-0x31f */
54
55#define APPLESMC_MAX_DATA_LENGTH 32
56
Parag Warudkar521cf642012-09-17 17:49:55 +020057/* wait up to 128 ms for a status change. */
Henrik Rydberga332bf92012-07-09 12:10:26 +020058#define APPLESMC_MIN_WAIT 0x0010
Henrik Rydberg829917c2012-07-27 20:12:46 +020059#define APPLESMC_RETRY_WAIT 0x0100
Parag Warudkar521cf642012-09-17 17:49:55 +020060#define APPLESMC_MAX_WAIT 0x20000
Henrik Rydberg8c9398d2008-10-18 20:27:43 -070061
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070062#define APPLESMC_READ_CMD 0x10
63#define APPLESMC_WRITE_CMD 0x11
64#define APPLESMC_GET_KEY_BY_INDEX_CMD 0x12
65#define APPLESMC_GET_KEY_TYPE_CMD 0x13
66
67#define KEY_COUNT_KEY "#KEY" /* r-o ui32 */
68
Henrik Rydberg8bd1a122008-10-18 20:27:39 -070069#define LIGHT_SENSOR_LEFT_KEY "ALV0" /* r-o {alv (6-10 bytes) */
70#define LIGHT_SENSOR_RIGHT_KEY "ALV1" /* r-o {alv (6-10 bytes) */
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -040071#define BACKLIGHT_KEY "LKSB" /* w-o {lkb (2 bytes) */
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070072
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -040073#define CLAMSHELL_KEY "MSLD" /* r-o ui8 (unused) */
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070074
75#define MOTION_SENSOR_X_KEY "MO_X" /* r-o sp78 (2 bytes) */
76#define MOTION_SENSOR_Y_KEY "MO_Y" /* r-o sp78 (2 bytes) */
77#define MOTION_SENSOR_Z_KEY "MO_Z" /* r-o sp78 (2 bytes) */
78#define MOTION_SENSOR_KEY "MOCN" /* r/w ui16 */
79
80#define FANS_COUNT "FNum" /* r-o ui8 */
81#define FANS_MANUAL "FS! " /* r-w ui16 */
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +000082#define FAN_ID_FMT "F%dID" /* r-o char[16] */
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070083
Henrik Rydbergb6e51222012-07-16 09:18:10 +020084#define TEMP_SENSOR_TYPE "sp78"
85
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070086/* List of keys used to read/write fan speeds */
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +000087static const char *const fan_speed_fmt[] = {
88 "F%dAc", /* actual speed */
89 "F%dMn", /* minimum speed (rw) */
90 "F%dMx", /* maximum speed */
91 "F%dSf", /* safe speed - not all models */
92 "F%dTg", /* target speed (manual: rw) */
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070093};
94
95#define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */
96#define INIT_WAIT_MSECS 50 /* ... in 50ms increments */
97
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -040098#define APPLESMC_POLL_INTERVAL 50 /* msecs */
Nicolas Boichat6f2fad72007-05-08 00:24:52 -070099#define APPLESMC_INPUT_FUZZ 4 /* input event threshold */
100#define APPLESMC_INPUT_FLAT 4
101
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +0000102#define to_index(attr) (to_sensor_dev_attr(attr)->index & 0xffff)
103#define to_option(attr) (to_sensor_dev_attr(attr)->index >> 16)
Henrik Rydberg9792dad2010-11-10 10:58:04 +0000104
Henrik Rydberg9792dad2010-11-10 10:58:04 +0000105/* Dynamic device node attributes */
106struct applesmc_dev_attr {
107 struct sensor_device_attribute sda; /* hwmon attributes */
108 char name[32]; /* room for node file name */
109};
110
111/* Dynamic device node group */
112struct applesmc_node_group {
113 char *format; /* format string */
114 void *show; /* show function */
115 void *store; /* store function */
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +0000116 int option; /* function argument */
Henrik Rydberg9792dad2010-11-10 10:58:04 +0000117 struct applesmc_dev_attr *nodes; /* dynamic node array */
118};
119
Henrik Rydberg58745832010-11-10 10:58:03 +0000120/* AppleSMC entry - cached register information */
121struct applesmc_entry {
122 char key[5]; /* four-letter key code */
123 u8 valid; /* set when entry is successfully read once */
124 u8 len; /* bounded by APPLESMC_MAX_DATA_LENGTH */
125 char type[5]; /* four-letter type code */
126 u8 flags; /* 0x10: func; 0x40: write; 0x80: read */
127};
128
129/* Register lookup and registers common to all SMCs */
130static struct applesmc_registers {
131 struct mutex mutex; /* register read/write mutex */
132 unsigned int key_count; /* number of SMC registers */
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +0000133 unsigned int fan_count; /* number of fans */
Henrik Rydberg9792dad2010-11-10 10:58:04 +0000134 unsigned int temp_count; /* number of temperature registers */
135 unsigned int temp_begin; /* temperature lower index bound */
136 unsigned int temp_end; /* temperature upper index bound */
Henrik Rydberge30bca12012-07-16 09:18:11 +0200137 unsigned int index_count; /* size of temperature index array */
Henrik Rydberg40ef06f2010-11-10 10:58:05 +0000138 int num_light_sensors; /* number of light sensors */
139 bool has_accelerometer; /* has motion sensor */
140 bool has_key_backlight; /* has keyboard backlight */
Henrik Rydberg58745832010-11-10 10:58:03 +0000141 bool init_complete; /* true when fully initialized */
142 struct applesmc_entry *cache; /* cached key entries */
Henrik Rydberge30bca12012-07-16 09:18:11 +0200143 const char **index; /* temperature key index */
Henrik Rydberg58745832010-11-10 10:58:03 +0000144} smcreg = {
145 .mutex = __MUTEX_INITIALIZER(smcreg.mutex),
146};
147
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700148static const int debug;
149static struct platform_device *pdev;
150static s16 rest_x;
151static s16 rest_y;
Henrik Rydberga976f152009-09-21 17:04:50 -0700152static u8 backlight_state[2];
153
Tony Jones1beeffe2007-08-20 13:46:20 -0700154static struct device *hwmon_dev;
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -0400155static struct input_polled_dev *applesmc_idev;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700156
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700157/*
158 * Last index written to key_at_index sysfs file, and value to use for all other
159 * key_at_index_* sysfs files.
160 */
161static unsigned int key_at_index;
162
163static struct workqueue_struct *applesmc_led_wq;
164
165/*
Henrik Rydberg829917c2012-07-27 20:12:46 +0200166 * wait_read - Wait for a byte to appear on SMC port. Callers must
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700167 * hold applesmc_lock.
168 */
Henrik Rydberg829917c2012-07-27 20:12:46 +0200169static int wait_read(void)
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700170{
Henrik Rydberg829917c2012-07-27 20:12:46 +0200171 u8 status;
Henrik Rydberg8c9398d2008-10-18 20:27:43 -0700172 int us;
Henrik Rydberg8c9398d2008-10-18 20:27:43 -0700173 for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) {
174 udelay(us);
Henrik Rydberg829917c2012-07-27 20:12:46 +0200175 status = inb(APPLESMC_CMD_PORT);
176 /* read: wait for smc to settle */
177 if (status & 0x01)
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700178 return 0;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700179 }
180
Henrik Rydberg829917c2012-07-27 20:12:46 +0200181 pr_warn("wait_read() fail: 0x%02x\n", status);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700182 return -EIO;
183}
184
185/*
Henrik Rydberg829917c2012-07-27 20:12:46 +0200186 * send_byte - Write to SMC port, retrying when necessary. Callers
187 * must hold applesmc_lock.
Henrik Rydberg84d2d7f2008-10-18 20:27:38 -0700188 */
Henrik Rydberg829917c2012-07-27 20:12:46 +0200189static int send_byte(u8 cmd, u16 port)
190{
191 u8 status;
192 int us;
193
194 outb(cmd, port);
195 for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) {
196 udelay(us);
197 status = inb(APPLESMC_CMD_PORT);
198 /* write: wait for smc to settle */
199 if (status & 0x02)
200 continue;
201 /* ready: cmd accepted, return */
202 if (status & 0x04)
203 return 0;
204 /* timeout: give up */
205 if (us << 1 == APPLESMC_MAX_WAIT)
206 break;
207 /* busy: long wait and resend */
208 udelay(APPLESMC_RETRY_WAIT);
209 outb(cmd, port);
210 }
211
212 pr_warn("send_byte(0x%02x, 0x%04x) fail: 0x%02x\n", cmd, port, status);
213 return -EIO;
214}
215
Henrik Rydberg84d2d7f2008-10-18 20:27:38 -0700216static int send_command(u8 cmd)
217{
Henrik Rydberg829917c2012-07-27 20:12:46 +0200218 return send_byte(cmd, APPLESMC_CMD_PORT);
Henrik Rydberg84d2d7f2008-10-18 20:27:38 -0700219}
220
Henrik Rydberg58745832010-11-10 10:58:03 +0000221static int send_argument(const char *key)
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700222{
223 int i;
224
Henrik Rydberg829917c2012-07-27 20:12:46 +0200225 for (i = 0; i < 4; i++)
226 if (send_byte(key[i], APPLESMC_DATA_PORT))
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700227 return -EIO;
Henrik Rydberg58745832010-11-10 10:58:03 +0000228 return 0;
229}
230
231static int read_smc(u8 cmd, const char *key, u8 *buffer, u8 len)
232{
233 int i;
234
235 if (send_command(cmd) || send_argument(key)) {
Henrik Rydbergac852ed2012-06-07 04:54:29 -0400236 pr_warn("%.4s: read arg fail\n", key);
Henrik Rydberg58745832010-11-10 10:58:03 +0000237 return -EIO;
238 }
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700239
Henrik Rydberg829917c2012-07-27 20:12:46 +0200240 if (send_byte(len, APPLESMC_DATA_PORT)) {
241 pr_warn("%.4s: read len fail\n", key);
242 return -EIO;
243 }
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700244
245 for (i = 0; i < len; i++) {
Henrik Rydberg829917c2012-07-27 20:12:46 +0200246 if (wait_read()) {
247 pr_warn("%.4s: read data[%d] fail\n", key, i);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700248 return -EIO;
Henrik Rydberg58745832010-11-10 10:58:03 +0000249 }
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700250 buffer[i] = inb(APPLESMC_DATA_PORT);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700251 }
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700252
253 return 0;
254}
255
Henrik Rydberg58745832010-11-10 10:58:03 +0000256static int write_smc(u8 cmd, const char *key, const u8 *buffer, u8 len)
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700257{
258 int i;
259
Henrik Rydberg58745832010-11-10 10:58:03 +0000260 if (send_command(cmd) || send_argument(key)) {
261 pr_warn("%s: write arg fail\n", key);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700262 return -EIO;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700263 }
264
Henrik Rydberg829917c2012-07-27 20:12:46 +0200265 if (send_byte(len, APPLESMC_DATA_PORT)) {
266 pr_warn("%.4s: write len fail\n", key);
267 return -EIO;
268 }
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700269
270 for (i = 0; i < len; i++) {
Henrik Rydberg829917c2012-07-27 20:12:46 +0200271 if (send_byte(buffer[i], APPLESMC_DATA_PORT)) {
Henrik Rydberg58745832010-11-10 10:58:03 +0000272 pr_warn("%s: write data fail\n", key);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700273 return -EIO;
Henrik Rydberg58745832010-11-10 10:58:03 +0000274 }
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700275 }
276
277 return 0;
278}
279
Henrik Rydberg58745832010-11-10 10:58:03 +0000280static int read_register_count(unsigned int *count)
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700281{
Henrik Rydberg58745832010-11-10 10:58:03 +0000282 __be32 be;
283 int ret;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700284
Henrik Rydberg58745832010-11-10 10:58:03 +0000285 ret = read_smc(APPLESMC_READ_CMD, KEY_COUNT_KEY, (u8 *)&be, 4);
286 if (ret)
287 return ret;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700288
Henrik Rydberg58745832010-11-10 10:58:03 +0000289 *count = be32_to_cpu(be);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700290 return 0;
291}
292
293/*
Henrik Rydberg58745832010-11-10 10:58:03 +0000294 * Serialized I/O
295 *
296 * Returns zero on success or a negative error on failure.
297 * All functions below are concurrency safe - callers should NOT hold lock.
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700298 */
Henrik Rydberg58745832010-11-10 10:58:03 +0000299
300static int applesmc_read_entry(const struct applesmc_entry *entry,
301 u8 *buf, u8 len)
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700302{
Henrik Rydberg58745832010-11-10 10:58:03 +0000303 int ret;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700304
Henrik Rydberg58745832010-11-10 10:58:03 +0000305 if (entry->len != len)
306 return -EINVAL;
307 mutex_lock(&smcreg.mutex);
308 ret = read_smc(APPLESMC_READ_CMD, entry->key, buf, len);
309 mutex_unlock(&smcreg.mutex);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700310
Henrik Rydberg58745832010-11-10 10:58:03 +0000311 return ret;
312}
313
314static int applesmc_write_entry(const struct applesmc_entry *entry,
315 const u8 *buf, u8 len)
316{
317 int ret;
318
319 if (entry->len != len)
320 return -EINVAL;
321 mutex_lock(&smcreg.mutex);
322 ret = write_smc(APPLESMC_WRITE_CMD, entry->key, buf, len);
323 mutex_unlock(&smcreg.mutex);
324 return ret;
325}
326
327static const struct applesmc_entry *applesmc_get_entry_by_index(int index)
328{
329 struct applesmc_entry *cache = &smcreg.cache[index];
330 u8 key[4], info[6];
331 __be32 be;
332 int ret = 0;
333
334 if (cache->valid)
335 return cache;
336
337 mutex_lock(&smcreg.mutex);
338
339 if (cache->valid)
340 goto out;
341 be = cpu_to_be32(index);
342 ret = read_smc(APPLESMC_GET_KEY_BY_INDEX_CMD, (u8 *)&be, key, 4);
343 if (ret)
344 goto out;
345 ret = read_smc(APPLESMC_GET_KEY_TYPE_CMD, key, info, 6);
346 if (ret)
347 goto out;
348
349 memcpy(cache->key, key, 4);
350 cache->len = info[0];
351 memcpy(cache->type, &info[1], 4);
352 cache->flags = info[5];
353 cache->valid = 1;
354
355out:
356 mutex_unlock(&smcreg.mutex);
357 if (ret)
358 return ERR_PTR(ret);
359 return cache;
360}
361
362static int applesmc_get_lower_bound(unsigned int *lo, const char *key)
363{
364 int begin = 0, end = smcreg.key_count;
365 const struct applesmc_entry *entry;
366
367 while (begin != end) {
368 int middle = begin + (end - begin) / 2;
369 entry = applesmc_get_entry_by_index(middle);
Henrik Rydberg0fc86ec2012-01-26 06:08:41 -0500370 if (IS_ERR(entry)) {
371 *lo = 0;
Henrik Rydberg58745832010-11-10 10:58:03 +0000372 return PTR_ERR(entry);
Henrik Rydberg0fc86ec2012-01-26 06:08:41 -0500373 }
Henrik Rydberg58745832010-11-10 10:58:03 +0000374 if (strcmp(entry->key, key) < 0)
375 begin = middle + 1;
376 else
377 end = middle;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700378 }
379
Henrik Rydberg58745832010-11-10 10:58:03 +0000380 *lo = begin;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700381 return 0;
382}
383
Henrik Rydberg58745832010-11-10 10:58:03 +0000384static int applesmc_get_upper_bound(unsigned int *hi, const char *key)
385{
386 int begin = 0, end = smcreg.key_count;
387 const struct applesmc_entry *entry;
388
389 while (begin != end) {
390 int middle = begin + (end - begin) / 2;
391 entry = applesmc_get_entry_by_index(middle);
Henrik Rydberg0fc86ec2012-01-26 06:08:41 -0500392 if (IS_ERR(entry)) {
393 *hi = smcreg.key_count;
Henrik Rydberg58745832010-11-10 10:58:03 +0000394 return PTR_ERR(entry);
Henrik Rydberg0fc86ec2012-01-26 06:08:41 -0500395 }
Henrik Rydberg58745832010-11-10 10:58:03 +0000396 if (strcmp(key, entry->key) < 0)
397 end = middle;
398 else
399 begin = middle + 1;
400 }
401
402 *hi = begin;
403 return 0;
404}
405
406static const struct applesmc_entry *applesmc_get_entry_by_key(const char *key)
407{
408 int begin, end;
409 int ret;
410
411 ret = applesmc_get_lower_bound(&begin, key);
412 if (ret)
413 return ERR_PTR(ret);
414 ret = applesmc_get_upper_bound(&end, key);
415 if (ret)
416 return ERR_PTR(ret);
417 if (end - begin != 1)
418 return ERR_PTR(-EINVAL);
419
420 return applesmc_get_entry_by_index(begin);
421}
422
423static int applesmc_read_key(const char *key, u8 *buffer, u8 len)
424{
425 const struct applesmc_entry *entry;
426
427 entry = applesmc_get_entry_by_key(key);
428 if (IS_ERR(entry))
429 return PTR_ERR(entry);
430
431 return applesmc_read_entry(entry, buffer, len);
432}
433
434static int applesmc_write_key(const char *key, const u8 *buffer, u8 len)
435{
436 const struct applesmc_entry *entry;
437
438 entry = applesmc_get_entry_by_key(key);
439 if (IS_ERR(entry))
440 return PTR_ERR(entry);
441
442 return applesmc_write_entry(entry, buffer, len);
443}
444
Henrik Rydberg40ef06f2010-11-10 10:58:05 +0000445static int applesmc_has_key(const char *key, bool *value)
446{
447 const struct applesmc_entry *entry;
448
449 entry = applesmc_get_entry_by_key(key);
450 if (IS_ERR(entry) && PTR_ERR(entry) != -EINVAL)
451 return PTR_ERR(entry);
452
453 *value = !IS_ERR(entry);
454 return 0;
455}
456
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700457/*
Henrik Rydbergedf48f32012-06-20 18:00:06 +0200458 * applesmc_read_s16 - Read 16-bit signed big endian register
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700459 */
Henrik Rydbergedf48f32012-06-20 18:00:06 +0200460static int applesmc_read_s16(const char *key, s16 *value)
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700461{
462 u8 buffer[2];
463 int ret;
464
Henrik Rydbergedf48f32012-06-20 18:00:06 +0200465 ret = applesmc_read_key(key, buffer, 2);
466 if (ret)
467 return ret;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700468
469 *value = ((s16)buffer[0] << 8) | buffer[1];
Henrik Rydbergedf48f32012-06-20 18:00:06 +0200470 return 0;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700471}
472
473/*
Henrik Rydberg2344cd02010-11-09 15:15:02 +0000474 * applesmc_device_init - initialize the accelerometer. Can sleep.
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700475 */
Henrik Rydberg2344cd02010-11-09 15:15:02 +0000476static void applesmc_device_init(void)
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700477{
Henrik Rydberg2344cd02010-11-09 15:15:02 +0000478 int total;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700479 u8 buffer[2];
480
Henrik Rydberg40ef06f2010-11-10 10:58:05 +0000481 if (!smcreg.has_accelerometer)
Henrik Rydberg2344cd02010-11-09 15:15:02 +0000482 return;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700483
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700484 for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) {
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700485 if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) &&
Henrik Rydberg2344cd02010-11-09 15:15:02 +0000486 (buffer[0] != 0x00 || buffer[1] != 0x00))
Henrik Rydberg58745832010-11-10 10:58:03 +0000487 return;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700488 buffer[0] = 0xe0;
489 buffer[1] = 0x00;
490 applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2);
491 msleep(INIT_WAIT_MSECS);
492 }
493
Joe Perches1ee7c712010-11-09 15:15:03 +0000494 pr_warn("failed to init the device\n");
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700495}
496
Henrik Rydberge30bca12012-07-16 09:18:11 +0200497static int applesmc_init_index(struct applesmc_registers *s)
498{
499 const struct applesmc_entry *entry;
500 unsigned int i;
501
502 if (s->index)
503 return 0;
504
505 s->index = kcalloc(s->temp_count, sizeof(s->index[0]), GFP_KERNEL);
506 if (!s->index)
507 return -ENOMEM;
508
509 for (i = s->temp_begin; i < s->temp_end; i++) {
510 entry = applesmc_get_entry_by_index(i);
511 if (IS_ERR(entry))
512 continue;
513 if (strcmp(entry->type, TEMP_SENSOR_TYPE))
514 continue;
515 s->index[s->index_count++] = entry->key;
516 }
517
518 return 0;
519}
520
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700521/*
Henrik Rydberg58745832010-11-10 10:58:03 +0000522 * applesmc_init_smcreg_try - Try to initialize register cache. Idempotent.
523 */
524static int applesmc_init_smcreg_try(void)
525{
526 struct applesmc_registers *s = &smcreg;
Henrik Rydberg40ef06f2010-11-10 10:58:05 +0000527 bool left_light_sensor, right_light_sensor;
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +0000528 u8 tmp[1];
Henrik Rydberg58745832010-11-10 10:58:03 +0000529 int ret;
530
531 if (s->init_complete)
532 return 0;
533
534 ret = read_register_count(&s->key_count);
535 if (ret)
536 return ret;
537
538 if (!s->cache)
539 s->cache = kcalloc(s->key_count, sizeof(*s->cache), GFP_KERNEL);
540 if (!s->cache)
541 return -ENOMEM;
542
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +0000543 ret = applesmc_read_key(FANS_COUNT, tmp, 1);
544 if (ret)
545 return ret;
546 s->fan_count = tmp[0];
547
Henrik Rydberg9792dad2010-11-10 10:58:04 +0000548 ret = applesmc_get_lower_bound(&s->temp_begin, "T");
549 if (ret)
550 return ret;
551 ret = applesmc_get_lower_bound(&s->temp_end, "U");
552 if (ret)
553 return ret;
554 s->temp_count = s->temp_end - s->temp_begin;
555
Henrik Rydberge30bca12012-07-16 09:18:11 +0200556 ret = applesmc_init_index(s);
557 if (ret)
558 return ret;
559
Henrik Rydberg40ef06f2010-11-10 10:58:05 +0000560 ret = applesmc_has_key(LIGHT_SENSOR_LEFT_KEY, &left_light_sensor);
561 if (ret)
562 return ret;
563 ret = applesmc_has_key(LIGHT_SENSOR_RIGHT_KEY, &right_light_sensor);
564 if (ret)
565 return ret;
566 ret = applesmc_has_key(MOTION_SENSOR_KEY, &s->has_accelerometer);
567 if (ret)
568 return ret;
569 ret = applesmc_has_key(BACKLIGHT_KEY, &s->has_key_backlight);
570 if (ret)
571 return ret;
572
573 s->num_light_sensors = left_light_sensor + right_light_sensor;
Henrik Rydberg58745832010-11-10 10:58:03 +0000574 s->init_complete = true;
575
Henrik Rydberge30bca12012-07-16 09:18:11 +0200576 pr_info("key=%d fan=%d temp=%d index=%d acc=%d lux=%d kbd=%d\n",
577 s->key_count, s->fan_count, s->temp_count, s->index_count,
Henrik Rydberg40ef06f2010-11-10 10:58:05 +0000578 s->has_accelerometer,
579 s->num_light_sensors,
580 s->has_key_backlight);
Henrik Rydberg58745832010-11-10 10:58:03 +0000581
582 return 0;
583}
584
Henrik Rydberge30bca12012-07-16 09:18:11 +0200585static void applesmc_destroy_smcreg(void)
586{
587 kfree(smcreg.index);
588 smcreg.index = NULL;
589 kfree(smcreg.cache);
590 smcreg.cache = NULL;
591 smcreg.init_complete = false;
592}
593
Henrik Rydberg58745832010-11-10 10:58:03 +0000594/*
595 * applesmc_init_smcreg - Initialize register cache.
596 *
597 * Retries until initialization is successful, or the operation times out.
598 *
599 */
600static int applesmc_init_smcreg(void)
601{
602 int ms, ret;
603
604 for (ms = 0; ms < INIT_TIMEOUT_MSECS; ms += INIT_WAIT_MSECS) {
605 ret = applesmc_init_smcreg_try();
606 if (!ret) {
607 if (ms)
608 pr_info("init_smcreg() took %d ms\n", ms);
609 return 0;
610 }
611 msleep(INIT_WAIT_MSECS);
612 }
613
Henrik Rydberge30bca12012-07-16 09:18:11 +0200614 applesmc_destroy_smcreg();
Henrik Rydberg58745832010-11-10 10:58:03 +0000615
616 return ret;
617}
618
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700619/* Device model stuff */
620static int applesmc_probe(struct platform_device *dev)
621{
Henrik Rydberg58745832010-11-10 10:58:03 +0000622 int ret;
623
624 ret = applesmc_init_smcreg();
625 if (ret)
626 return ret;
627
Henrik Rydberg2344cd02010-11-09 15:15:02 +0000628 applesmc_device_init();
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700629
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700630 return 0;
631}
632
Henrik Rydberga976f152009-09-21 17:04:50 -0700633/* Synchronize device with memorized backlight state */
634static int applesmc_pm_resume(struct device *dev)
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700635{
Henrik Rydberg40ef06f2010-11-10 10:58:05 +0000636 if (smcreg.has_key_backlight)
Henrik Rydberga976f152009-09-21 17:04:50 -0700637 applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2);
Henrik Rydberga976f152009-09-21 17:04:50 -0700638 return 0;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700639}
640
Henrik Rydberga976f152009-09-21 17:04:50 -0700641/* Reinitialize device on resume from hibernation */
642static int applesmc_pm_restore(struct device *dev)
643{
Henrik Rydberg2344cd02010-11-09 15:15:02 +0000644 applesmc_device_init();
Henrik Rydberga976f152009-09-21 17:04:50 -0700645 return applesmc_pm_resume(dev);
646}
647
Alexey Dobriyan47145212009-12-14 18:00:08 -0800648static const struct dev_pm_ops applesmc_pm_ops = {
Henrik Rydberga976f152009-09-21 17:04:50 -0700649 .resume = applesmc_pm_resume,
650 .restore = applesmc_pm_restore,
651};
652
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700653static struct platform_driver applesmc_driver = {
654 .probe = applesmc_probe,
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700655 .driver = {
656 .name = "applesmc",
657 .owner = THIS_MODULE,
Henrik Rydberga976f152009-09-21 17:04:50 -0700658 .pm = &applesmc_pm_ops,
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700659 },
660};
661
662/*
663 * applesmc_calibrate - Set our "resting" values. Callers must
664 * hold applesmc_lock.
665 */
666static void applesmc_calibrate(void)
667{
Henrik Rydbergedf48f32012-06-20 18:00:06 +0200668 applesmc_read_s16(MOTION_SENSOR_X_KEY, &rest_x);
669 applesmc_read_s16(MOTION_SENSOR_Y_KEY, &rest_y);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700670 rest_x = -rest_x;
671}
672
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -0400673static void applesmc_idev_poll(struct input_polled_dev *dev)
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700674{
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -0400675 struct input_dev *idev = dev->input;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700676 s16 x, y;
677
Henrik Rydbergedf48f32012-06-20 18:00:06 +0200678 if (applesmc_read_s16(MOTION_SENSOR_X_KEY, &x))
Henrik Rydberg58745832010-11-10 10:58:03 +0000679 return;
Henrik Rydbergedf48f32012-06-20 18:00:06 +0200680 if (applesmc_read_s16(MOTION_SENSOR_Y_KEY, &y))
Henrik Rydberg58745832010-11-10 10:58:03 +0000681 return;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700682
683 x = -x;
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -0400684 input_report_abs(idev, ABS_X, x - rest_x);
685 input_report_abs(idev, ABS_Y, y - rest_y);
686 input_sync(idev);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700687}
688
689/* Sysfs Files */
690
Nicolas Boichatfa744192007-05-23 13:58:13 -0700691static ssize_t applesmc_name_show(struct device *dev,
692 struct device_attribute *attr, char *buf)
693{
694 return snprintf(buf, PAGE_SIZE, "applesmc\n");
695}
696
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700697static ssize_t applesmc_position_show(struct device *dev,
698 struct device_attribute *attr, char *buf)
699{
700 int ret;
701 s16 x, y, z;
702
Henrik Rydbergedf48f32012-06-20 18:00:06 +0200703 ret = applesmc_read_s16(MOTION_SENSOR_X_KEY, &x);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700704 if (ret)
705 goto out;
Henrik Rydbergedf48f32012-06-20 18:00:06 +0200706 ret = applesmc_read_s16(MOTION_SENSOR_Y_KEY, &y);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700707 if (ret)
708 goto out;
Henrik Rydbergedf48f32012-06-20 18:00:06 +0200709 ret = applesmc_read_s16(MOTION_SENSOR_Z_KEY, &z);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700710 if (ret)
711 goto out;
712
713out:
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700714 if (ret)
715 return ret;
716 else
717 return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z);
718}
719
720static ssize_t applesmc_light_show(struct device *dev,
721 struct device_attribute *attr, char *sysfsbuf)
722{
Henrik Rydberg58745832010-11-10 10:58:03 +0000723 const struct applesmc_entry *entry;
Henrik Rydberg8bd1a122008-10-18 20:27:39 -0700724 static int data_length;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700725 int ret;
726 u8 left = 0, right = 0;
Henrik Rydberg58745832010-11-10 10:58:03 +0000727 u8 buffer[10];
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700728
Henrik Rydberg8bd1a122008-10-18 20:27:39 -0700729 if (!data_length) {
Henrik Rydberg58745832010-11-10 10:58:03 +0000730 entry = applesmc_get_entry_by_key(LIGHT_SENSOR_LEFT_KEY);
731 if (IS_ERR(entry))
732 return PTR_ERR(entry);
733 if (entry->len > 10)
734 return -ENXIO;
735 data_length = entry->len;
Joe Perches1ee7c712010-11-09 15:15:03 +0000736 pr_info("light sensor data length set to %d\n", data_length);
Henrik Rydberg8bd1a122008-10-18 20:27:39 -0700737 }
738
739 ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, data_length);
Alex Murrayc3d63622009-01-15 13:51:08 -0800740 /* newer macbooks report a single 10-bit bigendian value */
741 if (data_length == 10) {
742 left = be16_to_cpu(*(__be16 *)(buffer + 6)) >> 2;
743 goto out;
744 }
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700745 left = buffer[2];
746 if (ret)
747 goto out;
Henrik Rydberg8bd1a122008-10-18 20:27:39 -0700748 ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, data_length);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700749 right = buffer[2];
750
751out:
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700752 if (ret)
753 return ret;
754 else
755 return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right);
756}
757
Alex Murrayfa5575c2010-05-27 19:58:54 +0200758/* Displays sensor key as label */
759static ssize_t applesmc_show_sensor_label(struct device *dev,
760 struct device_attribute *devattr, char *sysfsbuf)
761{
Henrik Rydberge30bca12012-07-16 09:18:11 +0200762 const char *key = smcreg.index[to_index(devattr)];
Alex Murrayfa5575c2010-05-27 19:58:54 +0200763
Henrik Rydberge30bca12012-07-16 09:18:11 +0200764 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key);
Alex Murrayfa5575c2010-05-27 19:58:54 +0200765}
766
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700767/* Displays degree Celsius * 1000 */
768static ssize_t applesmc_show_temperature(struct device *dev,
769 struct device_attribute *devattr, char *sysfsbuf)
770{
Henrik Rydberge30bca12012-07-16 09:18:11 +0200771 const char *key = smcreg.index[to_index(devattr)];
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700772 int ret;
Henrik Rydbergb6e51222012-07-16 09:18:10 +0200773 s16 value;
774 int temp;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700775
Henrik Rydberge30bca12012-07-16 09:18:11 +0200776 ret = applesmc_read_s16(key, &value);
Henrik Rydberg9792dad2010-11-10 10:58:04 +0000777 if (ret)
778 return ret;
779
Henrik Rydbergb6e51222012-07-16 09:18:10 +0200780 temp = 250 * (value >> 6);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700781
Henrik Rydbergb6e51222012-07-16 09:18:10 +0200782 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", temp);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700783}
784
785static ssize_t applesmc_show_fan_speed(struct device *dev,
786 struct device_attribute *attr, char *sysfsbuf)
787{
788 int ret;
789 unsigned int speed = 0;
790 char newkey[5];
791 u8 buffer[2];
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700792
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +0000793 sprintf(newkey, fan_speed_fmt[to_option(attr)], to_index(attr));
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700794
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700795 ret = applesmc_read_key(newkey, buffer, 2);
796 speed = ((buffer[0] << 8 | buffer[1]) >> 2);
797
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700798 if (ret)
799 return ret;
800 else
801 return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed);
802}
803
804static ssize_t applesmc_store_fan_speed(struct device *dev,
805 struct device_attribute *attr,
806 const char *sysfsbuf, size_t count)
807{
808 int ret;
Guenter Roeck2bfe8142010-11-10 10:42:21 -0800809 unsigned long speed;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700810 char newkey[5];
811 u8 buffer[2];
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700812
Frans Meulenbroeks179c4fd2012-01-04 20:58:52 +0100813 if (kstrtoul(sysfsbuf, 10, &speed) < 0 || speed >= 0x4000)
Guenter Roeck2bfe8142010-11-10 10:42:21 -0800814 return -EINVAL; /* Bigger than a 14-bit value */
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700815
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +0000816 sprintf(newkey, fan_speed_fmt[to_option(attr)], to_index(attr));
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700817
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700818 buffer[0] = (speed >> 6) & 0xff;
819 buffer[1] = (speed << 2) & 0xff;
820 ret = applesmc_write_key(newkey, buffer, 2);
821
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700822 if (ret)
823 return ret;
824 else
825 return count;
826}
827
828static ssize_t applesmc_show_fan_manual(struct device *dev,
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +0000829 struct device_attribute *attr, char *sysfsbuf)
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700830{
831 int ret;
832 u16 manual = 0;
833 u8 buffer[2];
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700834
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700835 ret = applesmc_read_key(FANS_MANUAL, buffer, 2);
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +0000836 manual = ((buffer[0] << 8 | buffer[1]) >> to_index(attr)) & 0x01;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700837
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700838 if (ret)
839 return ret;
840 else
841 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual);
842}
843
844static ssize_t applesmc_store_fan_manual(struct device *dev,
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +0000845 struct device_attribute *attr,
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700846 const char *sysfsbuf, size_t count)
847{
848 int ret;
849 u8 buffer[2];
Guenter Roeck2bfe8142010-11-10 10:42:21 -0800850 unsigned long input;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700851 u16 val;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700852
Frans Meulenbroeks179c4fd2012-01-04 20:58:52 +0100853 if (kstrtoul(sysfsbuf, 10, &input) < 0)
Guenter Roeck2bfe8142010-11-10 10:42:21 -0800854 return -EINVAL;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700855
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700856 ret = applesmc_read_key(FANS_MANUAL, buffer, 2);
857 val = (buffer[0] << 8 | buffer[1]);
858 if (ret)
859 goto out;
860
861 if (input)
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +0000862 val = val | (0x01 << to_index(attr));
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700863 else
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +0000864 val = val & ~(0x01 << to_index(attr));
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700865
866 buffer[0] = (val >> 8) & 0xFF;
867 buffer[1] = val & 0xFF;
868
869 ret = applesmc_write_key(FANS_MANUAL, buffer, 2);
870
871out:
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700872 if (ret)
873 return ret;
874 else
875 return count;
876}
877
878static ssize_t applesmc_show_fan_position(struct device *dev,
879 struct device_attribute *attr, char *sysfsbuf)
880{
881 int ret;
882 char newkey[5];
883 u8 buffer[17];
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700884
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +0000885 sprintf(newkey, FAN_ID_FMT, to_index(attr));
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700886
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700887 ret = applesmc_read_key(newkey, buffer, 16);
888 buffer[16] = 0;
889
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700890 if (ret)
891 return ret;
892 else
893 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4);
894}
895
896static ssize_t applesmc_calibrate_show(struct device *dev,
897 struct device_attribute *attr, char *sysfsbuf)
898{
899 return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y);
900}
901
902static ssize_t applesmc_calibrate_store(struct device *dev,
903 struct device_attribute *attr, const char *sysfsbuf, size_t count)
904{
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700905 applesmc_calibrate();
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700906
907 return count;
908}
909
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700910static void applesmc_backlight_set(struct work_struct *work)
911{
Henrik Rydberga976f152009-09-21 17:04:50 -0700912 applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700913}
914static DECLARE_WORK(backlight_work, &applesmc_backlight_set);
915
916static void applesmc_brightness_set(struct led_classdev *led_cdev,
917 enum led_brightness value)
918{
919 int ret;
920
Henrik Rydberga976f152009-09-21 17:04:50 -0700921 backlight_state[0] = value;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700922 ret = queue_work(applesmc_led_wq, &backlight_work);
923
924 if (debug && (!ret))
Guenter Roeck692fe502013-01-10 05:49:55 -0800925 dev_dbg(led_cdev->dev, "work was already on the queue.\n");
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700926}
927
928static ssize_t applesmc_key_count_show(struct device *dev,
929 struct device_attribute *attr, char *sysfsbuf)
930{
931 int ret;
932 u8 buffer[4];
933 u32 count;
934
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700935 ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4);
936 count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) +
937 ((u32)buffer[2]<<8) + buffer[3];
938
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700939 if (ret)
940 return ret;
941 else
942 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count);
943}
944
945static ssize_t applesmc_key_at_index_read_show(struct device *dev,
946 struct device_attribute *attr, char *sysfsbuf)
947{
Henrik Rydberg58745832010-11-10 10:58:03 +0000948 const struct applesmc_entry *entry;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700949 int ret;
950
Henrik Rydberg58745832010-11-10 10:58:03 +0000951 entry = applesmc_get_entry_by_index(key_at_index);
952 if (IS_ERR(entry))
953 return PTR_ERR(entry);
954 ret = applesmc_read_entry(entry, sysfsbuf, entry->len);
955 if (ret)
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700956 return ret;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700957
Henrik Rydberg58745832010-11-10 10:58:03 +0000958 return entry->len;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700959}
960
961static ssize_t applesmc_key_at_index_data_length_show(struct device *dev,
962 struct device_attribute *attr, char *sysfsbuf)
963{
Henrik Rydberg58745832010-11-10 10:58:03 +0000964 const struct applesmc_entry *entry;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700965
Henrik Rydberg58745832010-11-10 10:58:03 +0000966 entry = applesmc_get_entry_by_index(key_at_index);
967 if (IS_ERR(entry))
968 return PTR_ERR(entry);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700969
Henrik Rydberg58745832010-11-10 10:58:03 +0000970 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", entry->len);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700971}
972
973static ssize_t applesmc_key_at_index_type_show(struct device *dev,
974 struct device_attribute *attr, char *sysfsbuf)
975{
Henrik Rydberg58745832010-11-10 10:58:03 +0000976 const struct applesmc_entry *entry;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700977
Henrik Rydberg58745832010-11-10 10:58:03 +0000978 entry = applesmc_get_entry_by_index(key_at_index);
979 if (IS_ERR(entry))
980 return PTR_ERR(entry);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700981
Henrik Rydberg58745832010-11-10 10:58:03 +0000982 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->type);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700983}
984
985static ssize_t applesmc_key_at_index_name_show(struct device *dev,
986 struct device_attribute *attr, char *sysfsbuf)
987{
Henrik Rydberg58745832010-11-10 10:58:03 +0000988 const struct applesmc_entry *entry;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700989
Henrik Rydberg58745832010-11-10 10:58:03 +0000990 entry = applesmc_get_entry_by_index(key_at_index);
991 if (IS_ERR(entry))
992 return PTR_ERR(entry);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700993
Henrik Rydberg58745832010-11-10 10:58:03 +0000994 return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", entry->key);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -0700995}
996
997static ssize_t applesmc_key_at_index_show(struct device *dev,
998 struct device_attribute *attr, char *sysfsbuf)
999{
1000 return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index);
1001}
1002
1003static ssize_t applesmc_key_at_index_store(struct device *dev,
1004 struct device_attribute *attr, const char *sysfsbuf, size_t count)
1005{
Henrik Rydberg58745832010-11-10 10:58:03 +00001006 unsigned long newkey;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001007
Frans Meulenbroeks179c4fd2012-01-04 20:58:52 +01001008 if (kstrtoul(sysfsbuf, 10, &newkey) < 0
Henrik Rydberg58745832010-11-10 10:58:03 +00001009 || newkey >= smcreg.key_count)
1010 return -EINVAL;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001011
Henrik Rydberg58745832010-11-10 10:58:03 +00001012 key_at_index = newkey;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001013 return count;
1014}
1015
1016static struct led_classdev applesmc_backlight = {
Richard Purdie6c152be2007-10-31 15:00:07 +01001017 .name = "smc::kbd_backlight",
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001018 .default_trigger = "nand-disk",
1019 .brightness_set = applesmc_brightness_set,
1020};
1021
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001022static struct applesmc_node_group info_group[] = {
1023 { "name", applesmc_name_show },
1024 { "key_count", applesmc_key_count_show },
1025 { "key_at_index", applesmc_key_at_index_show, applesmc_key_at_index_store },
1026 { "key_at_index_name", applesmc_key_at_index_name_show },
1027 { "key_at_index_type", applesmc_key_at_index_type_show },
1028 { "key_at_index_data_length", applesmc_key_at_index_data_length_show },
1029 { "key_at_index_data", applesmc_key_at_index_read_show },
1030 { }
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001031};
1032
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001033static struct applesmc_node_group accelerometer_group[] = {
1034 { "position", applesmc_position_show },
1035 { "calibrate", applesmc_calibrate_show, applesmc_calibrate_store },
1036 { }
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001037};
1038
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001039static struct applesmc_node_group light_sensor_group[] = {
1040 { "light", applesmc_light_show },
1041 { }
1042};
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001043
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +00001044static struct applesmc_node_group fan_group[] = {
1045 { "fan%d_label", applesmc_show_fan_position },
1046 { "fan%d_input", applesmc_show_fan_speed, NULL, 0 },
1047 { "fan%d_min", applesmc_show_fan_speed, applesmc_store_fan_speed, 1 },
1048 { "fan%d_max", applesmc_show_fan_speed, NULL, 2 },
1049 { "fan%d_safe", applesmc_show_fan_speed, NULL, 3 },
1050 { "fan%d_output", applesmc_show_fan_speed, applesmc_store_fan_speed, 4 },
1051 { "fan%d_manual", applesmc_show_fan_manual, applesmc_store_fan_manual },
1052 { }
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001053};
1054
Henrik Rydberg9792dad2010-11-10 10:58:04 +00001055static struct applesmc_node_group temp_group[] = {
1056 { "temp%d_label", applesmc_show_sensor_label },
1057 { "temp%d_input", applesmc_show_temperature },
1058 { }
Alex Murrayfa5575c2010-05-27 19:58:54 +02001059};
1060
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001061/* Module stuff */
1062
1063/*
Henrik Rydberg9792dad2010-11-10 10:58:04 +00001064 * applesmc_destroy_nodes - remove files and free associated memory
1065 */
1066static void applesmc_destroy_nodes(struct applesmc_node_group *groups)
1067{
1068 struct applesmc_node_group *grp;
1069 struct applesmc_dev_attr *node;
1070
1071 for (grp = groups; grp->nodes; grp++) {
1072 for (node = grp->nodes; node->sda.dev_attr.attr.name; node++)
1073 sysfs_remove_file(&pdev->dev.kobj,
1074 &node->sda.dev_attr.attr);
1075 kfree(grp->nodes);
1076 grp->nodes = NULL;
1077 }
1078}
1079
1080/*
1081 * applesmc_create_nodes - create a two-dimensional group of sysfs files
1082 */
1083static int applesmc_create_nodes(struct applesmc_node_group *groups, int num)
1084{
1085 struct applesmc_node_group *grp;
1086 struct applesmc_dev_attr *node;
1087 struct attribute *attr;
1088 int ret, i;
1089
1090 for (grp = groups; grp->format; grp++) {
1091 grp->nodes = kcalloc(num + 1, sizeof(*node), GFP_KERNEL);
1092 if (!grp->nodes) {
1093 ret = -ENOMEM;
1094 goto out;
1095 }
1096 for (i = 0; i < num; i++) {
1097 node = &grp->nodes[i];
1098 sprintf(node->name, grp->format, i + 1);
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +00001099 node->sda.index = (grp->option << 16) | (i & 0xffff);
Henrik Rydberg9792dad2010-11-10 10:58:04 +00001100 node->sda.dev_attr.show = grp->show;
1101 node->sda.dev_attr.store = grp->store;
1102 attr = &node->sda.dev_attr.attr;
Henrik Rydberg9d1f8a402011-01-22 20:55:39 +01001103 sysfs_attr_init(attr);
Henrik Rydberg9792dad2010-11-10 10:58:04 +00001104 attr->name = node->name;
1105 attr->mode = S_IRUGO | (grp->store ? S_IWUSR : 0);
1106 ret = sysfs_create_file(&pdev->dev.kobj, attr);
1107 if (ret) {
1108 attr->name = NULL;
1109 goto out;
1110 }
1111 }
1112 }
1113
1114 return 0;
1115out:
1116 applesmc_destroy_nodes(groups);
1117 return ret;
1118}
1119
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001120/* Create accelerometer ressources */
1121static int applesmc_create_accelerometer(void)
1122{
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -04001123 struct input_dev *idev;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001124 int ret;
1125
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001126 if (!smcreg.has_accelerometer)
1127 return 0;
1128
1129 ret = applesmc_create_nodes(accelerometer_group, 1);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001130 if (ret)
1131 goto out;
1132
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -04001133 applesmc_idev = input_allocate_polled_device();
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001134 if (!applesmc_idev) {
1135 ret = -ENOMEM;
1136 goto out_sysfs;
1137 }
1138
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -04001139 applesmc_idev->poll = applesmc_idev_poll;
1140 applesmc_idev->poll_interval = APPLESMC_POLL_INTERVAL;
1141
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001142 /* initial calibrate for the input device */
1143 applesmc_calibrate();
1144
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -04001145 /* initialize the input device */
1146 idev = applesmc_idev->input;
1147 idev->name = "applesmc";
1148 idev->id.bustype = BUS_HOST;
1149 idev->dev.parent = &pdev->dev;
Jiri Slaby7b19ada2007-10-18 23:40:32 -07001150 idev->evbit[0] = BIT_MASK(EV_ABS);
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -04001151 input_set_abs_params(idev, ABS_X,
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001152 -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT);
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -04001153 input_set_abs_params(idev, ABS_Y,
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001154 -256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT);
1155
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -04001156 ret = input_register_polled_device(applesmc_idev);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001157 if (ret)
1158 goto out_idev;
1159
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001160 return 0;
1161
1162out_idev:
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -04001163 input_free_polled_device(applesmc_idev);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001164
1165out_sysfs:
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001166 applesmc_destroy_nodes(accelerometer_group);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001167
1168out:
Joe Perches1ee7c712010-11-09 15:15:03 +00001169 pr_warn("driver init failed (ret=%d)!\n", ret);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001170 return ret;
1171}
1172
1173/* Release all ressources used by the accelerometer */
1174static void applesmc_release_accelerometer(void)
1175{
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001176 if (!smcreg.has_accelerometer)
1177 return;
Dmitry Torokhovd5cf2b92007-09-26 00:01:35 -04001178 input_unregister_polled_device(applesmc_idev);
1179 input_free_polled_device(applesmc_idev);
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001180 applesmc_destroy_nodes(accelerometer_group);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001181}
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001182
1183static int applesmc_create_light_sensor(void)
1184{
1185 if (!smcreg.num_light_sensors)
1186 return 0;
1187 return applesmc_create_nodes(light_sensor_group, 1);
1188}
1189
1190static void applesmc_release_light_sensor(void)
1191{
1192 if (!smcreg.num_light_sensors)
1193 return;
1194 applesmc_destroy_nodes(light_sensor_group);
1195}
1196
1197static int applesmc_create_key_backlight(void)
1198{
1199 if (!smcreg.has_key_backlight)
1200 return 0;
1201 applesmc_led_wq = create_singlethread_workqueue("applesmc-led");
1202 if (!applesmc_led_wq)
1203 return -ENOMEM;
1204 return led_classdev_register(&pdev->dev, &applesmc_backlight);
1205}
1206
1207static void applesmc_release_key_backlight(void)
1208{
1209 if (!smcreg.has_key_backlight)
1210 return;
1211 led_classdev_unregister(&applesmc_backlight);
1212 destroy_workqueue(applesmc_led_wq);
1213}
1214
Henrik Rydberg40ef06f2010-11-10 10:58:05 +00001215static int applesmc_dmi_match(const struct dmi_system_id *id)
1216{
1217 return 1;
1218}
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001219
Guenter Roeck85ebfd32012-01-19 11:02:15 -08001220/*
1221 * Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1".
1222 * So we need to put "Apple MacBook Pro" before "Apple MacBook".
1223 */
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001224static __initdata struct dmi_system_id applesmc_whitelist[] = {
Henrik Rydbergf5274c92008-10-18 20:27:40 -07001225 { applesmc_dmi_match, "Apple MacBook Air", {
1226 DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
1227 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir") },
Henrik Rydberg40ef06f2010-11-10 10:58:05 +00001228 },
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001229 { applesmc_dmi_match, "Apple MacBook Pro", {
Guenter Roeck2bfe8142010-11-10 10:42:21 -08001230 DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
1231 DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro") },
Henrik Rydberg40ef06f2010-11-10 10:58:05 +00001232 },
Riki Oktariantocd19ba12008-02-04 23:41:58 -08001233 { applesmc_dmi_match, "Apple MacBook", {
Guenter Roeck2bfe8142010-11-10 10:42:21 -08001234 DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
1235 DMI_MATCH(DMI_PRODUCT_NAME, "MacBook") },
Henrik Rydberg40ef06f2010-11-10 10:58:05 +00001236 },
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001237 { applesmc_dmi_match, "Apple Macmini", {
Guenter Roeck2bfe8142010-11-10 10:42:21 -08001238 DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
1239 DMI_MATCH(DMI_PRODUCT_NAME, "Macmini") },
Henrik Rydberg40ef06f2010-11-10 10:58:05 +00001240 },
Henrik Rydberg45a3a362008-11-19 15:36:42 -08001241 { applesmc_dmi_match, "Apple MacPro", {
1242 DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
1243 DMI_MATCH(DMI_PRODUCT_NAME, "MacPro") },
Henrik Rydberg40ef06f2010-11-10 10:58:05 +00001244 },
Roberto De Ioris9f86f282008-08-15 00:40:30 -07001245 { applesmc_dmi_match, "Apple iMac", {
Guenter Roeck2bfe8142010-11-10 10:42:21 -08001246 DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
1247 DMI_MATCH(DMI_PRODUCT_NAME, "iMac") },
Henrik Rydberg40ef06f2010-11-10 10:58:05 +00001248 },
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001249 { .ident = NULL }
1250};
1251
1252static int __init applesmc_init(void)
1253{
1254 int ret;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001255
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001256 if (!dmi_check_system(applesmc_whitelist)) {
Joe Perches1ee7c712010-11-09 15:15:03 +00001257 pr_warn("supported laptop not found!\n");
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001258 ret = -ENODEV;
1259 goto out;
1260 }
1261
1262 if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS,
1263 "applesmc")) {
1264 ret = -ENXIO;
1265 goto out;
1266 }
1267
1268 ret = platform_driver_register(&applesmc_driver);
1269 if (ret)
1270 goto out_region;
1271
Jean Delvareddfbf2a2007-05-08 20:27:04 -07001272 pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT,
1273 NULL, 0);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001274 if (IS_ERR(pdev)) {
1275 ret = PTR_ERR(pdev);
1276 goto out_driver;
1277 }
1278
Henrik Rydberg58745832010-11-10 10:58:03 +00001279 /* create register cache */
1280 ret = applesmc_init_smcreg();
Nicolas Boichat6996abf2007-05-27 22:17:43 +02001281 if (ret)
1282 goto out_device;
Nicolas Boichatfa744192007-05-23 13:58:13 -07001283
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001284 ret = applesmc_create_nodes(info_group, 1);
Henrik Rydberg58745832010-11-10 10:58:03 +00001285 if (ret)
1286 goto out_smcreg;
1287
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +00001288 ret = applesmc_create_nodes(fan_group, smcreg.fan_count);
1289 if (ret)
1290 goto out_info;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001291
Henrik Rydberge30bca12012-07-16 09:18:11 +02001292 ret = applesmc_create_nodes(temp_group, smcreg.index_count);
Henrik Rydberg9792dad2010-11-10 10:58:04 +00001293 if (ret)
1294 goto out_fans;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001295
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001296 ret = applesmc_create_accelerometer();
1297 if (ret)
1298 goto out_temperature;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001299
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001300 ret = applesmc_create_light_sensor();
1301 if (ret)
1302 goto out_accelerometer;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001303
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001304 ret = applesmc_create_key_backlight();
1305 if (ret)
1306 goto out_light_sysfs;
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001307
Tony Jones1beeffe2007-08-20 13:46:20 -07001308 hwmon_dev = hwmon_device_register(&pdev->dev);
1309 if (IS_ERR(hwmon_dev)) {
1310 ret = PTR_ERR(hwmon_dev);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001311 goto out_light_ledclass;
1312 }
1313
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001314 return 0;
1315
1316out_light_ledclass:
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001317 applesmc_release_key_backlight();
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001318out_light_sysfs:
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001319 applesmc_release_light_sensor();
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001320out_accelerometer:
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001321 applesmc_release_accelerometer();
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001322out_temperature:
Henrik Rydberg9792dad2010-11-10 10:58:04 +00001323 applesmc_destroy_nodes(temp_group);
Henrik Rydberg0559a532010-05-11 09:17:47 +02001324out_fans:
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +00001325 applesmc_destroy_nodes(fan_group);
1326out_info:
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001327 applesmc_destroy_nodes(info_group);
Henrik Rydberg58745832010-11-10 10:58:03 +00001328out_smcreg:
1329 applesmc_destroy_smcreg();
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001330out_device:
1331 platform_device_unregister(pdev);
1332out_driver:
1333 platform_driver_unregister(&applesmc_driver);
1334out_region:
1335 release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS);
1336out:
Joe Perches1ee7c712010-11-09 15:15:03 +00001337 pr_warn("driver init failed (ret=%d)!\n", ret);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001338 return ret;
1339}
1340
1341static void __exit applesmc_exit(void)
1342{
Tony Jones1beeffe2007-08-20 13:46:20 -07001343 hwmon_device_unregister(hwmon_dev);
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001344 applesmc_release_key_backlight();
1345 applesmc_release_light_sensor();
1346 applesmc_release_accelerometer();
Henrik Rydberg9792dad2010-11-10 10:58:04 +00001347 applesmc_destroy_nodes(temp_group);
Henrik Rydberg3eba2bf2010-11-09 15:15:08 +00001348 applesmc_destroy_nodes(fan_group);
Henrik Rydberg0b0b5df2010-11-09 15:15:09 +00001349 applesmc_destroy_nodes(info_group);
Henrik Rydberg58745832010-11-10 10:58:03 +00001350 applesmc_destroy_smcreg();
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001351 platform_device_unregister(pdev);
1352 platform_driver_unregister(&applesmc_driver);
1353 release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS);
Nicolas Boichat6f2fad72007-05-08 00:24:52 -07001354}
1355
1356module_init(applesmc_init);
1357module_exit(applesmc_exit);
1358
1359MODULE_AUTHOR("Nicolas Boichat");
1360MODULE_DESCRIPTION("Apple SMC");
1361MODULE_LICENSE("GPL v2");
Henrik Rydbergdc924ef2008-12-01 13:13:49 -08001362MODULE_DEVICE_TABLE(dmi, applesmc_whitelist);