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kernel-ark/drivers/hwmon/applesmc.c
Alex Murray fa5575cff9 hwmon: (applesmc) Add temperature sensor labels to sysfs interface 
The Apple SMC uses a systematic labeling scheme for the hardware
temperature sensors. This scheme is currently hidden from
userland. Since the sensor set, and consequently the numbering,
differs between models, an extensive database of configurations is
required for an application such as fan control. This patch adds the
SMC labels to the hwmon sysfs interface, allowing applications to use
the sensors more intelligibly.

[rydberg@euromail.se: fixed error handling]
Signed-off-by: Alex Murray <murray.alex@gmail.com>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
2010-05-27 19:58:54 +02:00

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/*
* drivers/hwmon/applesmc.c - driver for Apple's SMC (accelerometer, temperature
* sensors, fan control, keyboard backlight control) used in Intel-based Apple
* computers.
*
* Copyright (C) 2007 Nicolas Boichat <nicolas@boichat.ch>
*
* Based on hdaps.c driver:
* Copyright (C) 2005 Robert Love <rml@novell.com>
* Copyright (C) 2005 Jesper Juhl <jesper.juhl@gmail.com>
*
* Fan control based on smcFanControl:
* Copyright (C) 2006 Hendrik Holtmann <holtmann@mac.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License v2 as published by the
* Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/input-polldev.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/timer.h>
#include <linux/dmi.h>
#include <linux/mutex.h>
#include <linux/hwmon-sysfs.h>
#include <linux/io.h>
#include <linux/leds.h>
#include <linux/hwmon.h>
#include <linux/workqueue.h>
/* data port used by Apple SMC */
#define APPLESMC_DATA_PORT 0x300
/* command/status port used by Apple SMC */
#define APPLESMC_CMD_PORT 0x304
#define APPLESMC_NR_PORTS 32 /* 0x300-0x31f */
#define APPLESMC_MAX_DATA_LENGTH 32
#define APPLESMC_MIN_WAIT 0x0040
#define APPLESMC_MAX_WAIT 0x8000
#define APPLESMC_STATUS_MASK 0x0f
#define APPLESMC_READ_CMD 0x10
#define APPLESMC_WRITE_CMD 0x11
#define APPLESMC_GET_KEY_BY_INDEX_CMD 0x12
#define APPLESMC_GET_KEY_TYPE_CMD 0x13
#define KEY_COUNT_KEY "#KEY" /* r-o ui32 */
#define LIGHT_SENSOR_LEFT_KEY "ALV0" /* r-o {alv (6-10 bytes) */
#define LIGHT_SENSOR_RIGHT_KEY "ALV1" /* r-o {alv (6-10 bytes) */
#define BACKLIGHT_KEY "LKSB" /* w-o {lkb (2 bytes) */
#define CLAMSHELL_KEY "MSLD" /* r-o ui8 (unused) */
#define MOTION_SENSOR_X_KEY "MO_X" /* r-o sp78 (2 bytes) */
#define MOTION_SENSOR_Y_KEY "MO_Y" /* r-o sp78 (2 bytes) */
#define MOTION_SENSOR_Z_KEY "MO_Z" /* r-o sp78 (2 bytes) */
#define MOTION_SENSOR_KEY "MOCN" /* r/w ui16 */
#define FANS_COUNT "FNum" /* r-o ui8 */
#define FANS_MANUAL "FS! " /* r-w ui16 */
#define FAN_ACTUAL_SPEED "F0Ac" /* r-o fpe2 (2 bytes) */
#define FAN_MIN_SPEED "F0Mn" /* r-o fpe2 (2 bytes) */
#define FAN_MAX_SPEED "F0Mx" /* r-o fpe2 (2 bytes) */
#define FAN_SAFE_SPEED "F0Sf" /* r-o fpe2 (2 bytes) */
#define FAN_TARGET_SPEED "F0Tg" /* r-w fpe2 (2 bytes) */
#define FAN_POSITION "F0ID" /* r-o char[16] */
/*
* Temperature sensors keys (sp78 - 2 bytes).
*/
static const char *temperature_sensors_sets[][41] = {
/* Set 0: Macbook Pro */
{ "TA0P", "TB0T", "TC0D", "TC0P", "TG0H", "TG0P", "TG0T", "Th0H",
"Th1H", "Tm0P", "Ts0P", "Ts1P", NULL },
/* Set 1: Macbook2 set */
{ "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TN1P", "TTF0", "Th0H",
"Th0S", "Th1H", NULL },
/* Set 2: Macbook set */
{ "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TN1P", "Th0H", "Th0S",
"Th1H", "Ts0P", NULL },
/* Set 3: Macmini set */
{ "TC0D", "TC0P", NULL },
/* Set 4: Mac Pro (2 x Quad-Core) */
{ "TA0P", "TCAG", "TCAH", "TCBG", "TCBH", "TC0C", "TC0D", "TC0P",
"TC1C", "TC1D", "TC2C", "TC2D", "TC3C", "TC3D", "THTG", "TH0P",
"TH1P", "TH2P", "TH3P", "TMAP", "TMAS", "TMBS", "TM0P", "TM0S",
"TM1P", "TM1S", "TM2P", "TM2S", "TM3S", "TM8P", "TM8S", "TM9P",
"TM9S", "TN0H", "TS0C", NULL },
/* Set 5: iMac */
{ "TC0D", "TA0P", "TG0P", "TG0D", "TG0H", "TH0P", "Tm0P", "TO0P",
"Tp0C", NULL },
/* Set 6: Macbook3 set */
{ "TB0T", "TC0D", "TC0P", "TM0P", "TN0P", "TTF0", "TW0P", "Th0H",
"Th0S", "Th1H", NULL },
/* Set 7: Macbook Air */
{ "TB0T", "TB1S", "TB1T", "TB2S", "TB2T", "TC0D", "TC0P", "TCFP",
"TTF0", "TW0P", "Th0H", "Tp0P", "TpFP", "Ts0P", "Ts0S", NULL },
/* Set 8: Macbook Pro 4,1 (Penryn) */
{ "TB0T", "TC0D", "TC0P", "TG0D", "TG0H", "TTF0", "TW0P", "Th0H",
"Th1H", "Th2H", "Tm0P", "Ts0P", NULL },
/* Set 9: Macbook Pro 3,1 (Santa Rosa) */
{ "TALP", "TB0T", "TC0D", "TC0P", "TG0D", "TG0H", "TTF0", "TW0P",
"Th0H", "Th1H", "Th2H", "Tm0P", "Ts0P", NULL },
/* Set 10: iMac 5,1 */
{ "TA0P", "TC0D", "TC0P", "TG0D", "TH0P", "TO0P", "Tm0P", NULL },
/* Set 11: Macbook 5,1 */
{ "TB0T", "TB1T", "TB2T", "TB3T", "TC0D", "TC0P", "TN0D", "TN0P",
"TTF0", "Th0H", "Th1H", "ThFH", "Ts0P", "Ts0S", NULL },
/* Set 12: Macbook Pro 5,1 */
{ "TB0T", "TB1T", "TB2T", "TB3T", "TC0D", "TC0F", "TC0P", "TG0D",
"TG0F", "TG0H", "TG0P", "TG0T", "TG1H", "TN0D", "TN0P", "TTF0",
"Th2H", "Tm0P", "Ts0P", "Ts0S", NULL },
/* Set 13: iMac 8,1 */
{ "TA0P", "TC0D", "TC0H", "TC0P", "TG0D", "TG0H", "TG0P", "TH0P",
"TL0P", "TO0P", "TW0P", "Tm0P", "Tp0P", NULL },
/* Set 14: iMac 6,1 */
{ "TA0P", "TC0D", "TC0H", "TC0P", "TG0D", "TG0H", "TG0P", "TH0P",
"TO0P", "Tp0P", NULL },
/* Set 15: MacBook Air 2,1 */
{ "TB0T", "TB1S", "TB1T", "TB2S", "TB2T", "TC0D", "TN0D", "TTF0",
"TV0P", "TVFP", "TW0P", "Th0P", "Tp0P", "Tp1P", "TpFP", "Ts0P",
"Ts0S", NULL },
/* Set 16: Mac Pro 3,1 (2 x Quad-Core) */
{ "TA0P", "TCAG", "TCAH", "TCBG", "TCBH", "TC0C", "TC0D", "TC0P",
"TC1C", "TC1D", "TC2C", "TC2D", "TC3C", "TC3D", "TH0P", "TH1P",
"TH2P", "TH3P", "TMAP", "TMAS", "TMBS", "TM0P", "TM0S", "TM1P",
"TM1S", "TM2P", "TM2S", "TM3S", "TM8P", "TM8S", "TM9P", "TM9S",
"TN0C", "TN0D", "TN0H", "TS0C", "Tp0C", "Tp1C", "Tv0S", "Tv1S",
NULL },
/* Set 17: iMac 9,1 */
{ "TA0P", "TC0D", "TC0H", "TC0P", "TG0D", "TG0H", "TH0P", "TL0P",
"TN0D", "TN0H", "TN0P", "TO0P", "Tm0P", "Tp0P", NULL },
/* Set 18: MacBook Pro 2,2 */
{ "TB0T", "TC0D", "TC0P", "TG0H", "TG0P", "TG0T", "TM0P", "TTF0",
"Th0H", "Th1H", "Tm0P", "Ts0P", NULL },
/* Set 19: Macbook Pro 5,3 */
{ "TB0T", "TB1T", "TB2T", "TB3T", "TC0D", "TC0F", "TC0P", "TG0D",
"TG0F", "TG0H", "TG0P", "TG0T", "TN0D", "TN0P", "TTF0", "Th2H",
"Tm0P", "Ts0P", "Ts0S", NULL },
/* Set 20: MacBook Pro 5,4 */
{ "TB0T", "TB1T", "TB2T", "TB3T", "TC0D", "TC0F", "TC0P", "TN0D",
"TN0P", "TTF0", "Th2H", "Ts0P", "Ts0S", NULL },
/* Set 21: MacBook Pro 6,2 */
{ "TB0T", "TB1T", "TB2T", "TC0C", "TC0D", "TC0P", "TC1C", "TG0D",
"TG0P", "TG0T", "TMCD", "TP0P", "TPCD", "Th1H", "Th2H", "Tm0P",
"Ts0P", "Ts0S", NULL },
/* Set 22: MacBook Pro 7,1 */
{ "TB0T", "TB1T", "TB2T", "TC0D", "TC0P", "TN0D", "TN0P", "TN0S",
"TN1D", "TN1F", "TN1G", "TN1S", "Th1H", "Ts0P", "Ts0S", NULL },
};
/* List of keys used to read/write fan speeds */
static const char* fan_speed_keys[] = {
FAN_ACTUAL_SPEED,
FAN_MIN_SPEED,
FAN_MAX_SPEED,
FAN_SAFE_SPEED,
FAN_TARGET_SPEED
};
#define INIT_TIMEOUT_MSECS 5000 /* wait up to 5s for device init ... */
#define INIT_WAIT_MSECS 50 /* ... in 50ms increments */
#define APPLESMC_POLL_INTERVAL 50 /* msecs */
#define APPLESMC_INPUT_FUZZ 4 /* input event threshold */
#define APPLESMC_INPUT_FLAT 4
#define SENSOR_X 0
#define SENSOR_Y 1
#define SENSOR_Z 2
/* Structure to be passed to DMI_MATCH function */
struct dmi_match_data {
/* Indicates whether this computer has an accelerometer. */
int accelerometer;
/* Indicates whether this computer has light sensors and keyboard backlight. */
int light;
/* Indicates which temperature sensors set to use. */
int temperature_set;
};
static const int debug;
static struct platform_device *pdev;
static s16 rest_x;
static s16 rest_y;
static u8 backlight_state[2];
static struct device *hwmon_dev;
static struct input_polled_dev *applesmc_idev;
/* Indicates whether this computer has an accelerometer. */
static unsigned int applesmc_accelerometer;
/* Indicates whether this computer has light sensors and keyboard backlight. */
static unsigned int applesmc_light;
/* The number of fans handled by the driver */
static unsigned int fans_handled;
/* Indicates which temperature sensors set to use. */
static unsigned int applesmc_temperature_set;
static DEFINE_MUTEX(applesmc_lock);
/*
* Last index written to key_at_index sysfs file, and value to use for all other
* key_at_index_* sysfs files.
*/
static unsigned int key_at_index;
static struct workqueue_struct *applesmc_led_wq;
/*
* __wait_status - Wait up to 32ms for the status port to get a certain value
* (masked with 0x0f), returning zero if the value is obtained. Callers must
* hold applesmc_lock.
*/
static int __wait_status(u8 val)
{
int us;
val = val & APPLESMC_STATUS_MASK;
for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) {
udelay(us);
if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == val) {
if (debug)
printk(KERN_DEBUG
"Waited %d us for status %x\n",
2 * us - APPLESMC_MIN_WAIT, val);
return 0;
}
}
printk(KERN_WARNING "applesmc: wait status failed: %x != %x\n",
val, inb(APPLESMC_CMD_PORT));
return -EIO;
}
/*
* special treatment of command port - on newer macbooks, it seems necessary
* to resend the command byte before polling the status again. Callers must
* hold applesmc_lock.
*/
static int send_command(u8 cmd)
{
int us;
for (us = APPLESMC_MIN_WAIT; us < APPLESMC_MAX_WAIT; us <<= 1) {
outb(cmd, APPLESMC_CMD_PORT);
udelay(us);
if ((inb(APPLESMC_CMD_PORT) & APPLESMC_STATUS_MASK) == 0x0c)
return 0;
}
printk(KERN_WARNING "applesmc: command failed: %x -> %x\n",
cmd, inb(APPLESMC_CMD_PORT));
return -EIO;
}
/*
* applesmc_read_key - reads len bytes from a given key, and put them in buffer.
* Returns zero on success or a negative error on failure. Callers must
* hold applesmc_lock.
*/
static int applesmc_read_key(const char* key, u8* buffer, u8 len)
{
int i;
if (len > APPLESMC_MAX_DATA_LENGTH) {
printk(KERN_ERR "applesmc_read_key: cannot read more than "
"%d bytes\n", APPLESMC_MAX_DATA_LENGTH);
return -EINVAL;
}
if (send_command(APPLESMC_READ_CMD))
return -EIO;
for (i = 0; i < 4; i++) {
outb(key[i], APPLESMC_DATA_PORT);
if (__wait_status(0x04))
return -EIO;
}
if (debug)
printk(KERN_DEBUG "<%s", key);
outb(len, APPLESMC_DATA_PORT);
if (debug)
printk(KERN_DEBUG ">%x", len);
for (i = 0; i < len; i++) {
if (__wait_status(0x05))
return -EIO;
buffer[i] = inb(APPLESMC_DATA_PORT);
if (debug)
printk(KERN_DEBUG "<%x", buffer[i]);
}
if (debug)
printk(KERN_DEBUG "\n");
return 0;
}
/*
* applesmc_write_key - writes len bytes from buffer to a given key.
* Returns zero on success or a negative error on failure. Callers must
* hold applesmc_lock.
*/
static int applesmc_write_key(const char* key, u8* buffer, u8 len)
{
int i;
if (len > APPLESMC_MAX_DATA_LENGTH) {
printk(KERN_ERR "applesmc_write_key: cannot write more than "
"%d bytes\n", APPLESMC_MAX_DATA_LENGTH);
return -EINVAL;
}
if (send_command(APPLESMC_WRITE_CMD))
return -EIO;
for (i = 0; i < 4; i++) {
outb(key[i], APPLESMC_DATA_PORT);
if (__wait_status(0x04))
return -EIO;
}
outb(len, APPLESMC_DATA_PORT);
for (i = 0; i < len; i++) {
if (__wait_status(0x04))
return -EIO;
outb(buffer[i], APPLESMC_DATA_PORT);
}
return 0;
}
/*
* applesmc_get_key_at_index - get key at index, and put the result in key
* (char[6]). Returns zero on success or a negative error on failure. Callers
* must hold applesmc_lock.
*/
static int applesmc_get_key_at_index(int index, char* key)
{
int i;
u8 readkey[4];
readkey[0] = index >> 24;
readkey[1] = index >> 16;
readkey[2] = index >> 8;
readkey[3] = index;
if (send_command(APPLESMC_GET_KEY_BY_INDEX_CMD))
return -EIO;
for (i = 0; i < 4; i++) {
outb(readkey[i], APPLESMC_DATA_PORT);
if (__wait_status(0x04))
return -EIO;
}
outb(4, APPLESMC_DATA_PORT);
for (i = 0; i < 4; i++) {
if (__wait_status(0x05))
return -EIO;
key[i] = inb(APPLESMC_DATA_PORT);
}
key[4] = 0;
return 0;
}
/*
* applesmc_get_key_type - get key type, and put the result in type (char[6]).
* Returns zero on success or a negative error on failure. Callers must
* hold applesmc_lock.
*/
static int applesmc_get_key_type(char* key, char* type)
{
int i;
if (send_command(APPLESMC_GET_KEY_TYPE_CMD))
return -EIO;
for (i = 0; i < 4; i++) {
outb(key[i], APPLESMC_DATA_PORT);
if (__wait_status(0x04))
return -EIO;
}
outb(6, APPLESMC_DATA_PORT);
for (i = 0; i < 6; i++) {
if (__wait_status(0x05))
return -EIO;
type[i] = inb(APPLESMC_DATA_PORT);
}
type[5] = 0;
return 0;
}
/*
* applesmc_read_motion_sensor - Read motion sensor (X, Y or Z). Callers must
* hold applesmc_lock.
*/
static int applesmc_read_motion_sensor(int index, s16* value)
{
u8 buffer[2];
int ret;
switch (index) {
case SENSOR_X:
ret = applesmc_read_key(MOTION_SENSOR_X_KEY, buffer, 2);
break;
case SENSOR_Y:
ret = applesmc_read_key(MOTION_SENSOR_Y_KEY, buffer, 2);
break;
case SENSOR_Z:
ret = applesmc_read_key(MOTION_SENSOR_Z_KEY, buffer, 2);
break;
default:
ret = -EINVAL;
}
*value = ((s16)buffer[0] << 8) | buffer[1];
return ret;
}
/*
* applesmc_device_init - initialize the accelerometer. Returns zero on success
* and negative error code on failure. Can sleep.
*/
static int applesmc_device_init(void)
{
int total, ret = -ENXIO;
u8 buffer[2];
if (!applesmc_accelerometer)
return 0;
mutex_lock(&applesmc_lock);
for (total = INIT_TIMEOUT_MSECS; total > 0; total -= INIT_WAIT_MSECS) {
if (debug)
printk(KERN_DEBUG "applesmc try %d\n", total);
if (!applesmc_read_key(MOTION_SENSOR_KEY, buffer, 2) &&
(buffer[0] != 0x00 || buffer[1] != 0x00)) {
if (total == INIT_TIMEOUT_MSECS) {
printk(KERN_DEBUG "applesmc: device has"
" already been initialized"
" (0x%02x, 0x%02x).\n",
buffer[0], buffer[1]);
} else {
printk(KERN_DEBUG "applesmc: device"
" successfully initialized"
" (0x%02x, 0x%02x).\n",
buffer[0], buffer[1]);
}
ret = 0;
goto out;
}
buffer[0] = 0xe0;
buffer[1] = 0x00;
applesmc_write_key(MOTION_SENSOR_KEY, buffer, 2);
msleep(INIT_WAIT_MSECS);
}
printk(KERN_WARNING "applesmc: failed to init the device\n");
out:
mutex_unlock(&applesmc_lock);
return ret;
}
/*
* applesmc_get_fan_count - get the number of fans. Callers must NOT hold
* applesmc_lock.
*/
static int applesmc_get_fan_count(void)
{
int ret;
u8 buffer[1];
mutex_lock(&applesmc_lock);
ret = applesmc_read_key(FANS_COUNT, buffer, 1);
mutex_unlock(&applesmc_lock);
if (ret)
return ret;
else
return buffer[0];
}
/* Device model stuff */
static int applesmc_probe(struct platform_device *dev)
{
int ret;
ret = applesmc_device_init();
if (ret)
return ret;
printk(KERN_INFO "applesmc: device successfully initialized.\n");
return 0;
}
/* Synchronize device with memorized backlight state */
static int applesmc_pm_resume(struct device *dev)
{
mutex_lock(&applesmc_lock);
if (applesmc_light)
applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2);
mutex_unlock(&applesmc_lock);
return 0;
}
/* Reinitialize device on resume from hibernation */
static int applesmc_pm_restore(struct device *dev)
{
int ret = applesmc_device_init();
if (ret)
return ret;
return applesmc_pm_resume(dev);
}
static const struct dev_pm_ops applesmc_pm_ops = {
.resume = applesmc_pm_resume,
.restore = applesmc_pm_restore,
};
static struct platform_driver applesmc_driver = {
.probe = applesmc_probe,
.driver = {
.name = "applesmc",
.owner = THIS_MODULE,
.pm = &applesmc_pm_ops,
},
};
/*
* applesmc_calibrate - Set our "resting" values. Callers must
* hold applesmc_lock.
*/
static void applesmc_calibrate(void)
{
applesmc_read_motion_sensor(SENSOR_X, &rest_x);
applesmc_read_motion_sensor(SENSOR_Y, &rest_y);
rest_x = -rest_x;
}
static void applesmc_idev_poll(struct input_polled_dev *dev)
{
struct input_dev *idev = dev->input;
s16 x, y;
mutex_lock(&applesmc_lock);
if (applesmc_read_motion_sensor(SENSOR_X, &x))
goto out;
if (applesmc_read_motion_sensor(SENSOR_Y, &y))
goto out;
x = -x;
input_report_abs(idev, ABS_X, x - rest_x);
input_report_abs(idev, ABS_Y, y - rest_y);
input_sync(idev);
out:
mutex_unlock(&applesmc_lock);
}
/* Sysfs Files */
static ssize_t applesmc_name_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return snprintf(buf, PAGE_SIZE, "applesmc\n");
}
static ssize_t applesmc_position_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
int ret;
s16 x, y, z;
mutex_lock(&applesmc_lock);
ret = applesmc_read_motion_sensor(SENSOR_X, &x);
if (ret)
goto out;
ret = applesmc_read_motion_sensor(SENSOR_Y, &y);
if (ret)
goto out;
ret = applesmc_read_motion_sensor(SENSOR_Z, &z);
if (ret)
goto out;
out:
mutex_unlock(&applesmc_lock);
if (ret)
return ret;
else
return snprintf(buf, PAGE_SIZE, "(%d,%d,%d)\n", x, y, z);
}
static ssize_t applesmc_light_show(struct device *dev,
struct device_attribute *attr, char *sysfsbuf)
{
static int data_length;
int ret;
u8 left = 0, right = 0;
u8 buffer[10], query[6];
mutex_lock(&applesmc_lock);
if (!data_length) {
ret = applesmc_get_key_type(LIGHT_SENSOR_LEFT_KEY, query);
if (ret)
goto out;
data_length = clamp_val(query[0], 0, 10);
printk(KERN_INFO "applesmc: light sensor data length set to "
"%d\n", data_length);
}
ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, data_length);
/* newer macbooks report a single 10-bit bigendian value */
if (data_length == 10) {
left = be16_to_cpu(*(__be16 *)(buffer + 6)) >> 2;
goto out;
}
left = buffer[2];
if (ret)
goto out;
ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, data_length);
right = buffer[2];
out:
mutex_unlock(&applesmc_lock);
if (ret)
return ret;
else
return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right);
}
/* Displays sensor key as label */
static ssize_t applesmc_show_sensor_label(struct device *dev,
struct device_attribute *devattr, char *sysfsbuf)
{
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
const char *key =
temperature_sensors_sets[applesmc_temperature_set][attr->index];
return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key);
}
/* Displays degree Celsius * 1000 */
static ssize_t applesmc_show_temperature(struct device *dev,
struct device_attribute *devattr, char *sysfsbuf)
{
int ret;
u8 buffer[2];
unsigned int temp;
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
const char* key =
temperature_sensors_sets[applesmc_temperature_set][attr->index];
mutex_lock(&applesmc_lock);
ret = applesmc_read_key(key, buffer, 2);
temp = buffer[0]*1000;
temp += (buffer[1] >> 6) * 250;
mutex_unlock(&applesmc_lock);
if (ret)
return ret;
else
return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", temp);
}
static ssize_t applesmc_show_fan_speed(struct device *dev,
struct device_attribute *attr, char *sysfsbuf)
{
int ret;
unsigned int speed = 0;
char newkey[5];
u8 buffer[2];
struct sensor_device_attribute_2 *sensor_attr =
to_sensor_dev_attr_2(attr);
newkey[0] = fan_speed_keys[sensor_attr->nr][0];
newkey[1] = '0' + sensor_attr->index;
newkey[2] = fan_speed_keys[sensor_attr->nr][2];
newkey[3] = fan_speed_keys[sensor_attr->nr][3];
newkey[4] = 0;
mutex_lock(&applesmc_lock);
ret = applesmc_read_key(newkey, buffer, 2);
speed = ((buffer[0] << 8 | buffer[1]) >> 2);
mutex_unlock(&applesmc_lock);
if (ret)
return ret;
else
return snprintf(sysfsbuf, PAGE_SIZE, "%u\n", speed);
}
static ssize_t applesmc_store_fan_speed(struct device *dev,
struct device_attribute *attr,
const char *sysfsbuf, size_t count)
{
int ret;
u32 speed;
char newkey[5];
u8 buffer[2];
struct sensor_device_attribute_2 *sensor_attr =
to_sensor_dev_attr_2(attr);
speed = simple_strtoul(sysfsbuf, NULL, 10);
if (speed > 0x4000) /* Bigger than a 14-bit value */
return -EINVAL;
newkey[0] = fan_speed_keys[sensor_attr->nr][0];
newkey[1] = '0' + sensor_attr->index;
newkey[2] = fan_speed_keys[sensor_attr->nr][2];
newkey[3] = fan_speed_keys[sensor_attr->nr][3];
newkey[4] = 0;
mutex_lock(&applesmc_lock);
buffer[0] = (speed >> 6) & 0xff;
buffer[1] = (speed << 2) & 0xff;
ret = applesmc_write_key(newkey, buffer, 2);
mutex_unlock(&applesmc_lock);
if (ret)
return ret;
else
return count;
}
static ssize_t applesmc_show_fan_manual(struct device *dev,
struct device_attribute *devattr, char *sysfsbuf)
{
int ret;
u16 manual = 0;
u8 buffer[2];
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
mutex_lock(&applesmc_lock);
ret = applesmc_read_key(FANS_MANUAL, buffer, 2);
manual = ((buffer[0] << 8 | buffer[1]) >> attr->index) & 0x01;
mutex_unlock(&applesmc_lock);
if (ret)
return ret;
else
return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", manual);
}
static ssize_t applesmc_store_fan_manual(struct device *dev,
struct device_attribute *devattr,
const char *sysfsbuf, size_t count)
{
int ret;
u8 buffer[2];
u32 input;
u16 val;
struct sensor_device_attribute *attr = to_sensor_dev_attr(devattr);
input = simple_strtoul(sysfsbuf, NULL, 10);
mutex_lock(&applesmc_lock);
ret = applesmc_read_key(FANS_MANUAL, buffer, 2);
val = (buffer[0] << 8 | buffer[1]);
if (ret)
goto out;
if (input)
val = val | (0x01 << attr->index);
else
val = val & ~(0x01 << attr->index);
buffer[0] = (val >> 8) & 0xFF;
buffer[1] = val & 0xFF;
ret = applesmc_write_key(FANS_MANUAL, buffer, 2);
out:
mutex_unlock(&applesmc_lock);
if (ret)
return ret;
else
return count;
}
static ssize_t applesmc_show_fan_position(struct device *dev,
struct device_attribute *attr, char *sysfsbuf)
{
int ret;
char newkey[5];
u8 buffer[17];
struct sensor_device_attribute_2 *sensor_attr =
to_sensor_dev_attr_2(attr);
newkey[0] = FAN_POSITION[0];
newkey[1] = '0' + sensor_attr->index;
newkey[2] = FAN_POSITION[2];
newkey[3] = FAN_POSITION[3];
newkey[4] = 0;
mutex_lock(&applesmc_lock);
ret = applesmc_read_key(newkey, buffer, 16);
buffer[16] = 0;
mutex_unlock(&applesmc_lock);
if (ret)
return ret;
else
return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", buffer+4);
}
static ssize_t applesmc_calibrate_show(struct device *dev,
struct device_attribute *attr, char *sysfsbuf)
{
return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", rest_x, rest_y);
}
static ssize_t applesmc_calibrate_store(struct device *dev,
struct device_attribute *attr, const char *sysfsbuf, size_t count)
{
mutex_lock(&applesmc_lock);
applesmc_calibrate();
mutex_unlock(&applesmc_lock);
return count;
}
static void applesmc_backlight_set(struct work_struct *work)
{
mutex_lock(&applesmc_lock);
applesmc_write_key(BACKLIGHT_KEY, backlight_state, 2);
mutex_unlock(&applesmc_lock);
}
static DECLARE_WORK(backlight_work, &applesmc_backlight_set);
static void applesmc_brightness_set(struct led_classdev *led_cdev,
enum led_brightness value)
{
int ret;
backlight_state[0] = value;
ret = queue_work(applesmc_led_wq, &backlight_work);
if (debug && (!ret))
printk(KERN_DEBUG "applesmc: work was already on the queue.\n");
}
static ssize_t applesmc_key_count_show(struct device *dev,
struct device_attribute *attr, char *sysfsbuf)
{
int ret;
u8 buffer[4];
u32 count;
mutex_lock(&applesmc_lock);
ret = applesmc_read_key(KEY_COUNT_KEY, buffer, 4);
count = ((u32)buffer[0]<<24) + ((u32)buffer[1]<<16) +
((u32)buffer[2]<<8) + buffer[3];
mutex_unlock(&applesmc_lock);
if (ret)
return ret;
else
return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", count);
}
static ssize_t applesmc_key_at_index_read_show(struct device *dev,
struct device_attribute *attr, char *sysfsbuf)
{
char key[5];
char info[6];
int ret;
mutex_lock(&applesmc_lock);
ret = applesmc_get_key_at_index(key_at_index, key);
if (ret || !key[0]) {
mutex_unlock(&applesmc_lock);
return -EINVAL;
}
ret = applesmc_get_key_type(key, info);
if (ret) {
mutex_unlock(&applesmc_lock);
return ret;
}
/*
* info[0] maximum value (APPLESMC_MAX_DATA_LENGTH) is much lower than
* PAGE_SIZE, so we don't need any checks before writing to sysfsbuf.
*/
ret = applesmc_read_key(key, sysfsbuf, info[0]);
mutex_unlock(&applesmc_lock);
if (!ret) {
return info[0];
} else {
return ret;
}
}
static ssize_t applesmc_key_at_index_data_length_show(struct device *dev,
struct device_attribute *attr, char *sysfsbuf)
{
char key[5];
char info[6];
int ret;
mutex_lock(&applesmc_lock);
ret = applesmc_get_key_at_index(key_at_index, key);
if (ret || !key[0]) {
mutex_unlock(&applesmc_lock);
return -EINVAL;
}
ret = applesmc_get_key_type(key, info);
mutex_unlock(&applesmc_lock);
if (!ret)
return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", info[0]);
else
return ret;
}
static ssize_t applesmc_key_at_index_type_show(struct device *dev,
struct device_attribute *attr, char *sysfsbuf)
{
char key[5];
char info[6];
int ret;
mutex_lock(&applesmc_lock);
ret = applesmc_get_key_at_index(key_at_index, key);
if (ret || !key[0]) {
mutex_unlock(&applesmc_lock);
return -EINVAL;
}
ret = applesmc_get_key_type(key, info);
mutex_unlock(&applesmc_lock);
if (!ret)
return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", info+1);
else
return ret;
}
static ssize_t applesmc_key_at_index_name_show(struct device *dev,
struct device_attribute *attr, char *sysfsbuf)
{
char key[5];
int ret;
mutex_lock(&applesmc_lock);
ret = applesmc_get_key_at_index(key_at_index, key);
mutex_unlock(&applesmc_lock);
if (!ret && key[0])
return snprintf(sysfsbuf, PAGE_SIZE, "%s\n", key);
else
return -EINVAL;
}
static ssize_t applesmc_key_at_index_show(struct device *dev,
struct device_attribute *attr, char *sysfsbuf)
{
return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", key_at_index);
}
static ssize_t applesmc_key_at_index_store(struct device *dev,
struct device_attribute *attr, const char *sysfsbuf, size_t count)
{
mutex_lock(&applesmc_lock);
key_at_index = simple_strtoul(sysfsbuf, NULL, 10);
mutex_unlock(&applesmc_lock);
return count;
}
static struct led_classdev applesmc_backlight = {
.name = "smc::kbd_backlight",
.default_trigger = "nand-disk",
.brightness_set = applesmc_brightness_set,
};
static DEVICE_ATTR(name, 0444, applesmc_name_show, NULL);
static DEVICE_ATTR(position, 0444, applesmc_position_show, NULL);
static DEVICE_ATTR(calibrate, 0644,
applesmc_calibrate_show, applesmc_calibrate_store);
static struct attribute *accelerometer_attributes[] = {
&dev_attr_position.attr,
&dev_attr_calibrate.attr,
NULL
};
static const struct attribute_group accelerometer_attributes_group =
{ .attrs = accelerometer_attributes };
static DEVICE_ATTR(light, 0444, applesmc_light_show, NULL);
static DEVICE_ATTR(key_count, 0444, applesmc_key_count_show, NULL);
static DEVICE_ATTR(key_at_index, 0644,
applesmc_key_at_index_show, applesmc_key_at_index_store);
static DEVICE_ATTR(key_at_index_name, 0444,
applesmc_key_at_index_name_show, NULL);
static DEVICE_ATTR(key_at_index_type, 0444,
applesmc_key_at_index_type_show, NULL);
static DEVICE_ATTR(key_at_index_data_length, 0444,
applesmc_key_at_index_data_length_show, NULL);
static DEVICE_ATTR(key_at_index_data, 0444,
applesmc_key_at_index_read_show, NULL);
static struct attribute *key_enumeration_attributes[] = {
&dev_attr_key_count.attr,
&dev_attr_key_at_index.attr,
&dev_attr_key_at_index_name.attr,
&dev_attr_key_at_index_type.attr,
&dev_attr_key_at_index_data_length.attr,
&dev_attr_key_at_index_data.attr,
NULL
};
static const struct attribute_group key_enumeration_group =
{ .attrs = key_enumeration_attributes };
/*
* Macro defining SENSOR_DEVICE_ATTR for a fan sysfs entries.
* - show actual speed
* - show/store minimum speed
* - show maximum speed
* - show safe speed
* - show/store target speed
* - show/store manual mode
*/
#define sysfs_fan_speeds_offset(offset) \
static SENSOR_DEVICE_ATTR_2(fan##offset##_input, S_IRUGO, \
applesmc_show_fan_speed, NULL, 0, offset-1); \
\
static SENSOR_DEVICE_ATTR_2(fan##offset##_min, S_IRUGO | S_IWUSR, \
applesmc_show_fan_speed, applesmc_store_fan_speed, 1, offset-1); \
\
static SENSOR_DEVICE_ATTR_2(fan##offset##_max, S_IRUGO, \
applesmc_show_fan_speed, NULL, 2, offset-1); \
\
static SENSOR_DEVICE_ATTR_2(fan##offset##_safe, S_IRUGO, \
applesmc_show_fan_speed, NULL, 3, offset-1); \
\
static SENSOR_DEVICE_ATTR_2(fan##offset##_output, S_IRUGO | S_IWUSR, \
applesmc_show_fan_speed, applesmc_store_fan_speed, 4, offset-1); \
\
static SENSOR_DEVICE_ATTR(fan##offset##_manual, S_IRUGO | S_IWUSR, \
applesmc_show_fan_manual, applesmc_store_fan_manual, offset-1); \
\
static SENSOR_DEVICE_ATTR(fan##offset##_label, S_IRUGO, \
applesmc_show_fan_position, NULL, offset-1); \
\
static struct attribute *fan##offset##_attributes[] = { \
&sensor_dev_attr_fan##offset##_input.dev_attr.attr, \
&sensor_dev_attr_fan##offset##_min.dev_attr.attr, \
&sensor_dev_attr_fan##offset##_max.dev_attr.attr, \
&sensor_dev_attr_fan##offset##_safe.dev_attr.attr, \
&sensor_dev_attr_fan##offset##_output.dev_attr.attr, \
&sensor_dev_attr_fan##offset##_manual.dev_attr.attr, \
&sensor_dev_attr_fan##offset##_label.dev_attr.attr, \
NULL \
};
/*
* Create the needed functions for each fan using the macro defined above
* (4 fans are supported)
*/
sysfs_fan_speeds_offset(1);
sysfs_fan_speeds_offset(2);
sysfs_fan_speeds_offset(3);
sysfs_fan_speeds_offset(4);
static const struct attribute_group fan_attribute_groups[] = {
{ .attrs = fan1_attributes },
{ .attrs = fan2_attributes },
{ .attrs = fan3_attributes },
{ .attrs = fan4_attributes },
};
/*
* Temperature sensors sysfs entries.
*/
static SENSOR_DEVICE_ATTR(temp1_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 2);
static SENSOR_DEVICE_ATTR(temp4_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 3);
static SENSOR_DEVICE_ATTR(temp5_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 4);
static SENSOR_DEVICE_ATTR(temp6_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 5);
static SENSOR_DEVICE_ATTR(temp7_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 6);
static SENSOR_DEVICE_ATTR(temp8_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 7);
static SENSOR_DEVICE_ATTR(temp9_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 8);
static SENSOR_DEVICE_ATTR(temp10_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 9);
static SENSOR_DEVICE_ATTR(temp11_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 10);
static SENSOR_DEVICE_ATTR(temp12_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 11);
static SENSOR_DEVICE_ATTR(temp13_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 12);
static SENSOR_DEVICE_ATTR(temp14_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 13);
static SENSOR_DEVICE_ATTR(temp15_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 14);
static SENSOR_DEVICE_ATTR(temp16_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 15);
static SENSOR_DEVICE_ATTR(temp17_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 16);
static SENSOR_DEVICE_ATTR(temp18_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 17);
static SENSOR_DEVICE_ATTR(temp19_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 18);
static SENSOR_DEVICE_ATTR(temp20_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 19);
static SENSOR_DEVICE_ATTR(temp21_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 20);
static SENSOR_DEVICE_ATTR(temp22_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 21);
static SENSOR_DEVICE_ATTR(temp23_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 22);
static SENSOR_DEVICE_ATTR(temp24_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 23);
static SENSOR_DEVICE_ATTR(temp25_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 24);
static SENSOR_DEVICE_ATTR(temp26_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 25);
static SENSOR_DEVICE_ATTR(temp27_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 26);
static SENSOR_DEVICE_ATTR(temp28_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 27);
static SENSOR_DEVICE_ATTR(temp29_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 28);
static SENSOR_DEVICE_ATTR(temp30_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 29);
static SENSOR_DEVICE_ATTR(temp31_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 30);
static SENSOR_DEVICE_ATTR(temp32_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 31);
static SENSOR_DEVICE_ATTR(temp33_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 32);
static SENSOR_DEVICE_ATTR(temp34_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 33);
static SENSOR_DEVICE_ATTR(temp35_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 34);
static SENSOR_DEVICE_ATTR(temp36_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 35);
static SENSOR_DEVICE_ATTR(temp37_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 36);
static SENSOR_DEVICE_ATTR(temp38_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 37);
static SENSOR_DEVICE_ATTR(temp39_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 38);
static SENSOR_DEVICE_ATTR(temp40_label, S_IRUGO,
applesmc_show_sensor_label, NULL, 39);
static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO,
applesmc_show_temperature, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO,
applesmc_show_temperature, NULL, 1);
static SENSOR_DEVICE_ATTR(temp3_input, S_IRUGO,
applesmc_show_temperature, NULL, 2);
static SENSOR_DEVICE_ATTR(temp4_input, S_IRUGO,
applesmc_show_temperature, NULL, 3);
static SENSOR_DEVICE_ATTR(temp5_input, S_IRUGO,
applesmc_show_temperature, NULL, 4);
static SENSOR_DEVICE_ATTR(temp6_input, S_IRUGO,
applesmc_show_temperature, NULL, 5);
static SENSOR_DEVICE_ATTR(temp7_input, S_IRUGO,
applesmc_show_temperature, NULL, 6);
static SENSOR_DEVICE_ATTR(temp8_input, S_IRUGO,
applesmc_show_temperature, NULL, 7);
static SENSOR_DEVICE_ATTR(temp9_input, S_IRUGO,
applesmc_show_temperature, NULL, 8);
static SENSOR_DEVICE_ATTR(temp10_input, S_IRUGO,
applesmc_show_temperature, NULL, 9);
static SENSOR_DEVICE_ATTR(temp11_input, S_IRUGO,
applesmc_show_temperature, NULL, 10);
static SENSOR_DEVICE_ATTR(temp12_input, S_IRUGO,
applesmc_show_temperature, NULL, 11);
static SENSOR_DEVICE_ATTR(temp13_input, S_IRUGO,
applesmc_show_temperature, NULL, 12);
static SENSOR_DEVICE_ATTR(temp14_input, S_IRUGO,
applesmc_show_temperature, NULL, 13);
static SENSOR_DEVICE_ATTR(temp15_input, S_IRUGO,
applesmc_show_temperature, NULL, 14);
static SENSOR_DEVICE_ATTR(temp16_input, S_IRUGO,
applesmc_show_temperature, NULL, 15);
static SENSOR_DEVICE_ATTR(temp17_input, S_IRUGO,
applesmc_show_temperature, NULL, 16);
static SENSOR_DEVICE_ATTR(temp18_input, S_IRUGO,
applesmc_show_temperature, NULL, 17);
static SENSOR_DEVICE_ATTR(temp19_input, S_IRUGO,
applesmc_show_temperature, NULL, 18);
static SENSOR_DEVICE_ATTR(temp20_input, S_IRUGO,
applesmc_show_temperature, NULL, 19);
static SENSOR_DEVICE_ATTR(temp21_input, S_IRUGO,
applesmc_show_temperature, NULL, 20);
static SENSOR_DEVICE_ATTR(temp22_input, S_IRUGO,
applesmc_show_temperature, NULL, 21);
static SENSOR_DEVICE_ATTR(temp23_input, S_IRUGO,
applesmc_show_temperature, NULL, 22);
static SENSOR_DEVICE_ATTR(temp24_input, S_IRUGO,
applesmc_show_temperature, NULL, 23);
static SENSOR_DEVICE_ATTR(temp25_input, S_IRUGO,
applesmc_show_temperature, NULL, 24);
static SENSOR_DEVICE_ATTR(temp26_input, S_IRUGO,
applesmc_show_temperature, NULL, 25);
static SENSOR_DEVICE_ATTR(temp27_input, S_IRUGO,
applesmc_show_temperature, NULL, 26);
static SENSOR_DEVICE_ATTR(temp28_input, S_IRUGO,
applesmc_show_temperature, NULL, 27);
static SENSOR_DEVICE_ATTR(temp29_input, S_IRUGO,
applesmc_show_temperature, NULL, 28);
static SENSOR_DEVICE_ATTR(temp30_input, S_IRUGO,
applesmc_show_temperature, NULL, 29);
static SENSOR_DEVICE_ATTR(temp31_input, S_IRUGO,
applesmc_show_temperature, NULL, 30);
static SENSOR_DEVICE_ATTR(temp32_input, S_IRUGO,
applesmc_show_temperature, NULL, 31);
static SENSOR_DEVICE_ATTR(temp33_input, S_IRUGO,
applesmc_show_temperature, NULL, 32);
static SENSOR_DEVICE_ATTR(temp34_input, S_IRUGO,
applesmc_show_temperature, NULL, 33);
static SENSOR_DEVICE_ATTR(temp35_input, S_IRUGO,
applesmc_show_temperature, NULL, 34);
static SENSOR_DEVICE_ATTR(temp36_input, S_IRUGO,
applesmc_show_temperature, NULL, 35);
static SENSOR_DEVICE_ATTR(temp37_input, S_IRUGO,
applesmc_show_temperature, NULL, 36);
static SENSOR_DEVICE_ATTR(temp38_input, S_IRUGO,
applesmc_show_temperature, NULL, 37);
static SENSOR_DEVICE_ATTR(temp39_input, S_IRUGO,
applesmc_show_temperature, NULL, 38);
static SENSOR_DEVICE_ATTR(temp40_input, S_IRUGO,
applesmc_show_temperature, NULL, 39);
static struct attribute *label_attributes[] = {
&sensor_dev_attr_temp1_label.dev_attr.attr,
&sensor_dev_attr_temp2_label.dev_attr.attr,
&sensor_dev_attr_temp3_label.dev_attr.attr,
&sensor_dev_attr_temp4_label.dev_attr.attr,
&sensor_dev_attr_temp5_label.dev_attr.attr,
&sensor_dev_attr_temp6_label.dev_attr.attr,
&sensor_dev_attr_temp7_label.dev_attr.attr,
&sensor_dev_attr_temp8_label.dev_attr.attr,
&sensor_dev_attr_temp9_label.dev_attr.attr,
&sensor_dev_attr_temp10_label.dev_attr.attr,
&sensor_dev_attr_temp11_label.dev_attr.attr,
&sensor_dev_attr_temp12_label.dev_attr.attr,
&sensor_dev_attr_temp13_label.dev_attr.attr,
&sensor_dev_attr_temp14_label.dev_attr.attr,
&sensor_dev_attr_temp15_label.dev_attr.attr,
&sensor_dev_attr_temp16_label.dev_attr.attr,
&sensor_dev_attr_temp17_label.dev_attr.attr,
&sensor_dev_attr_temp18_label.dev_attr.attr,
&sensor_dev_attr_temp19_label.dev_attr.attr,
&sensor_dev_attr_temp20_label.dev_attr.attr,
&sensor_dev_attr_temp21_label.dev_attr.attr,
&sensor_dev_attr_temp22_label.dev_attr.attr,
&sensor_dev_attr_temp23_label.dev_attr.attr,
&sensor_dev_attr_temp24_label.dev_attr.attr,
&sensor_dev_attr_temp25_label.dev_attr.attr,
&sensor_dev_attr_temp26_label.dev_attr.attr,
&sensor_dev_attr_temp27_label.dev_attr.attr,
&sensor_dev_attr_temp28_label.dev_attr.attr,
&sensor_dev_attr_temp29_label.dev_attr.attr,
&sensor_dev_attr_temp30_label.dev_attr.attr,
&sensor_dev_attr_temp31_label.dev_attr.attr,
&sensor_dev_attr_temp32_label.dev_attr.attr,
&sensor_dev_attr_temp33_label.dev_attr.attr,
&sensor_dev_attr_temp34_label.dev_attr.attr,
&sensor_dev_attr_temp35_label.dev_attr.attr,
&sensor_dev_attr_temp36_label.dev_attr.attr,
&sensor_dev_attr_temp37_label.dev_attr.attr,
&sensor_dev_attr_temp38_label.dev_attr.attr,
&sensor_dev_attr_temp39_label.dev_attr.attr,
&sensor_dev_attr_temp40_label.dev_attr.attr,
NULL
};
static struct attribute *temperature_attributes[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr,
&sensor_dev_attr_temp3_input.dev_attr.attr,
&sensor_dev_attr_temp4_input.dev_attr.attr,
&sensor_dev_attr_temp5_input.dev_attr.attr,
&sensor_dev_attr_temp6_input.dev_attr.attr,
&sensor_dev_attr_temp7_input.dev_attr.attr,
&sensor_dev_attr_temp8_input.dev_attr.attr,
&sensor_dev_attr_temp9_input.dev_attr.attr,
&sensor_dev_attr_temp10_input.dev_attr.attr,
&sensor_dev_attr_temp11_input.dev_attr.attr,
&sensor_dev_attr_temp12_input.dev_attr.attr,
&sensor_dev_attr_temp13_input.dev_attr.attr,
&sensor_dev_attr_temp14_input.dev_attr.attr,
&sensor_dev_attr_temp15_input.dev_attr.attr,
&sensor_dev_attr_temp16_input.dev_attr.attr,
&sensor_dev_attr_temp17_input.dev_attr.attr,
&sensor_dev_attr_temp18_input.dev_attr.attr,
&sensor_dev_attr_temp19_input.dev_attr.attr,
&sensor_dev_attr_temp20_input.dev_attr.attr,
&sensor_dev_attr_temp21_input.dev_attr.attr,
&sensor_dev_attr_temp22_input.dev_attr.attr,
&sensor_dev_attr_temp23_input.dev_attr.attr,
&sensor_dev_attr_temp24_input.dev_attr.attr,
&sensor_dev_attr_temp25_input.dev_attr.attr,
&sensor_dev_attr_temp26_input.dev_attr.attr,
&sensor_dev_attr_temp27_input.dev_attr.attr,
&sensor_dev_attr_temp28_input.dev_attr.attr,
&sensor_dev_attr_temp29_input.dev_attr.attr,
&sensor_dev_attr_temp30_input.dev_attr.attr,
&sensor_dev_attr_temp31_input.dev_attr.attr,
&sensor_dev_attr_temp32_input.dev_attr.attr,
&sensor_dev_attr_temp33_input.dev_attr.attr,
&sensor_dev_attr_temp34_input.dev_attr.attr,
&sensor_dev_attr_temp35_input.dev_attr.attr,
&sensor_dev_attr_temp36_input.dev_attr.attr,
&sensor_dev_attr_temp37_input.dev_attr.attr,
&sensor_dev_attr_temp38_input.dev_attr.attr,
&sensor_dev_attr_temp39_input.dev_attr.attr,
&sensor_dev_attr_temp40_input.dev_attr.attr,
NULL
};
static const struct attribute_group temperature_attributes_group =
{ .attrs = temperature_attributes };
static const struct attribute_group label_attributes_group = {
.attrs = label_attributes
};
/* Module stuff */
/*
* applesmc_dmi_match - found a match. return one, short-circuiting the hunt.
*/
static int applesmc_dmi_match(const struct dmi_system_id *id)
{
int i = 0;
struct dmi_match_data* dmi_data = id->driver_data;
printk(KERN_INFO "applesmc: %s detected:\n", id->ident);
applesmc_accelerometer = dmi_data->accelerometer;
printk(KERN_INFO "applesmc: - Model %s accelerometer\n",
applesmc_accelerometer ? "with" : "without");
applesmc_light = dmi_data->light;
printk(KERN_INFO "applesmc: - Model %s light sensors and backlight\n",
applesmc_light ? "with" : "without");
applesmc_temperature_set = dmi_data->temperature_set;
while (temperature_sensors_sets[applesmc_temperature_set][i] != NULL)
i++;
printk(KERN_INFO "applesmc: - Model with %d temperature sensors\n", i);
return 1;
}
/* Create accelerometer ressources */
static int applesmc_create_accelerometer(void)
{
struct input_dev *idev;
int ret;
ret = sysfs_create_group(&pdev->dev.kobj,
&accelerometer_attributes_group);
if (ret)
goto out;
applesmc_idev = input_allocate_polled_device();
if (!applesmc_idev) {
ret = -ENOMEM;
goto out_sysfs;
}
applesmc_idev->poll = applesmc_idev_poll;
applesmc_idev->poll_interval = APPLESMC_POLL_INTERVAL;
/* initial calibrate for the input device */
applesmc_calibrate();
/* initialize the input device */
idev = applesmc_idev->input;
idev->name = "applesmc";
idev->id.bustype = BUS_HOST;
idev->dev.parent = &pdev->dev;
idev->evbit[0] = BIT_MASK(EV_ABS);
input_set_abs_params(idev, ABS_X,
-256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT);
input_set_abs_params(idev, ABS_Y,
-256, 256, APPLESMC_INPUT_FUZZ, APPLESMC_INPUT_FLAT);
ret = input_register_polled_device(applesmc_idev);
if (ret)
goto out_idev;
return 0;
out_idev:
input_free_polled_device(applesmc_idev);
out_sysfs:
sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group);
out:
printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret);
return ret;
}
/* Release all ressources used by the accelerometer */
static void applesmc_release_accelerometer(void)
{
input_unregister_polled_device(applesmc_idev);
input_free_polled_device(applesmc_idev);
sysfs_remove_group(&pdev->dev.kobj, &accelerometer_attributes_group);
}
static __initdata struct dmi_match_data applesmc_dmi_data[] = {
/* MacBook Pro: accelerometer, backlight and temperature set 0 */
{ .accelerometer = 1, .light = 1, .temperature_set = 0 },
/* MacBook2: accelerometer and temperature set 1 */
{ .accelerometer = 1, .light = 0, .temperature_set = 1 },
/* MacBook: accelerometer and temperature set 2 */
{ .accelerometer = 1, .light = 0, .temperature_set = 2 },
/* MacMini: temperature set 3 */
{ .accelerometer = 0, .light = 0, .temperature_set = 3 },
/* MacPro: temperature set 4 */
{ .accelerometer = 0, .light = 0, .temperature_set = 4 },
/* iMac: temperature set 5 */
{ .accelerometer = 0, .light = 0, .temperature_set = 5 },
/* MacBook3, MacBook4: accelerometer and temperature set 6 */
{ .accelerometer = 1, .light = 0, .temperature_set = 6 },
/* MacBook Air: accelerometer, backlight and temperature set 7 */
{ .accelerometer = 1, .light = 1, .temperature_set = 7 },
/* MacBook Pro 4: accelerometer, backlight and temperature set 8 */
{ .accelerometer = 1, .light = 1, .temperature_set = 8 },
/* MacBook Pro 3: accelerometer, backlight and temperature set 9 */
{ .accelerometer = 1, .light = 1, .temperature_set = 9 },
/* iMac 5: light sensor only, temperature set 10 */
{ .accelerometer = 0, .light = 0, .temperature_set = 10 },
/* MacBook 5: accelerometer, backlight and temperature set 11 */
{ .accelerometer = 1, .light = 1, .temperature_set = 11 },
/* MacBook Pro 5: accelerometer, backlight and temperature set 12 */
{ .accelerometer = 1, .light = 1, .temperature_set = 12 },
/* iMac 8: light sensor only, temperature set 13 */
{ .accelerometer = 0, .light = 0, .temperature_set = 13 },
/* iMac 6: light sensor only, temperature set 14 */
{ .accelerometer = 0, .light = 0, .temperature_set = 14 },
/* MacBook Air 2,1: accelerometer, backlight and temperature set 15 */
{ .accelerometer = 1, .light = 1, .temperature_set = 15 },
/* MacPro3,1: temperature set 16 */
{ .accelerometer = 0, .light = 0, .temperature_set = 16 },
/* iMac 9,1: light sensor only, temperature set 17 */
{ .accelerometer = 0, .light = 0, .temperature_set = 17 },
/* MacBook Pro 2,2: accelerometer, backlight and temperature set 18 */
{ .accelerometer = 1, .light = 1, .temperature_set = 18 },
/* MacBook Pro 5,3: accelerometer, backlight and temperature set 19 */
{ .accelerometer = 1, .light = 1, .temperature_set = 19 },
/* MacBook Pro 5,4: accelerometer, backlight and temperature set 20 */
{ .accelerometer = 1, .light = 1, .temperature_set = 20 },
/* MacBook Pro 6,2: accelerometer, backlight and temperature set 21 */
{ .accelerometer = 1, .light = 1, .temperature_set = 21 },
/* MacBook Pro 7,1: accelerometer, backlight and temperature set 22 */
{ .accelerometer = 1, .light = 1, .temperature_set = 22 },
};
/* Note that DMI_MATCH(...,"MacBook") will match "MacBookPro1,1".
* So we need to put "Apple MacBook Pro" before "Apple MacBook". */
static __initdata struct dmi_system_id applesmc_whitelist[] = {
{ applesmc_dmi_match, "Apple MacBook Air 2", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir2") },
&applesmc_dmi_data[15]},
{ applesmc_dmi_match, "Apple MacBook Air", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookAir") },
&applesmc_dmi_data[7]},
{ applesmc_dmi_match, "Apple MacBook Pro 7", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro7") },
&applesmc_dmi_data[22]},
{ applesmc_dmi_match, "Apple MacBook Pro 5,4", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,4") },
&applesmc_dmi_data[20]},
{ applesmc_dmi_match, "Apple MacBook Pro 5,3", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5,3") },
&applesmc_dmi_data[19]},
{ applesmc_dmi_match, "Apple MacBook Pro 6", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro6") },
&applesmc_dmi_data[21]},
{ applesmc_dmi_match, "Apple MacBook Pro 5", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5") },
&applesmc_dmi_data[12]},
{ applesmc_dmi_match, "Apple MacBook Pro 4", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro4") },
&applesmc_dmi_data[8]},
{ applesmc_dmi_match, "Apple MacBook Pro 3", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro3") },
&applesmc_dmi_data[9]},
{ applesmc_dmi_match, "Apple MacBook Pro 2,2", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple Computer, Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro2,2") },
&applesmc_dmi_data[18]},
{ applesmc_dmi_match, "Apple MacBook Pro", {
DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
DMI_MATCH(DMI_PRODUCT_NAME,"MacBookPro") },
&applesmc_dmi_data[0]},
{ applesmc_dmi_match, "Apple MacBook (v2)", {
DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
DMI_MATCH(DMI_PRODUCT_NAME,"MacBook2") },
&applesmc_dmi_data[1]},
{ applesmc_dmi_match, "Apple MacBook (v3)", {
DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
DMI_MATCH(DMI_PRODUCT_NAME,"MacBook3") },
&applesmc_dmi_data[6]},
{ applesmc_dmi_match, "Apple MacBook 4", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBook4") },
&applesmc_dmi_data[6]},
{ applesmc_dmi_match, "Apple MacBook 5", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacBook5") },
&applesmc_dmi_data[11]},
{ applesmc_dmi_match, "Apple MacBook", {
DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
DMI_MATCH(DMI_PRODUCT_NAME,"MacBook") },
&applesmc_dmi_data[2]},
{ applesmc_dmi_match, "Apple Macmini", {
DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
DMI_MATCH(DMI_PRODUCT_NAME,"Macmini") },
&applesmc_dmi_data[3]},
{ applesmc_dmi_match, "Apple MacPro2", {
DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
DMI_MATCH(DMI_PRODUCT_NAME,"MacPro2") },
&applesmc_dmi_data[4]},
{ applesmc_dmi_match, "Apple MacPro3", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacPro3") },
&applesmc_dmi_data[16]},
{ applesmc_dmi_match, "Apple MacPro", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "MacPro") },
&applesmc_dmi_data[4]},
{ applesmc_dmi_match, "Apple iMac 9,1", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "iMac9,1") },
&applesmc_dmi_data[17]},
{ applesmc_dmi_match, "Apple iMac 8", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "iMac8") },
&applesmc_dmi_data[13]},
{ applesmc_dmi_match, "Apple iMac 6", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "iMac6") },
&applesmc_dmi_data[14]},
{ applesmc_dmi_match, "Apple iMac 5", {
DMI_MATCH(DMI_BOARD_VENDOR, "Apple"),
DMI_MATCH(DMI_PRODUCT_NAME, "iMac5") },
&applesmc_dmi_data[10]},
{ applesmc_dmi_match, "Apple iMac", {
DMI_MATCH(DMI_BOARD_VENDOR,"Apple"),
DMI_MATCH(DMI_PRODUCT_NAME,"iMac") },
&applesmc_dmi_data[5]},
{ .ident = NULL }
};
static int __init applesmc_init(void)
{
int ret;
int count;
int i;
if (!dmi_check_system(applesmc_whitelist)) {
printk(KERN_WARNING "applesmc: supported laptop not found!\n");
ret = -ENODEV;
goto out;
}
if (!request_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS,
"applesmc")) {
ret = -ENXIO;
goto out;
}
ret = platform_driver_register(&applesmc_driver);
if (ret)
goto out_region;
pdev = platform_device_register_simple("applesmc", APPLESMC_DATA_PORT,
NULL, 0);
if (IS_ERR(pdev)) {
ret = PTR_ERR(pdev);
goto out_driver;
}
ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_name.attr);
if (ret)
goto out_device;
/* Create key enumeration sysfs files */
ret = sysfs_create_group(&pdev->dev.kobj, &key_enumeration_group);
if (ret)
goto out_name;
/* create fan files */
count = applesmc_get_fan_count();
if (count < 0)
printk(KERN_ERR "applesmc: Cannot get the number of fans.\n");
else
printk(KERN_INFO "applesmc: %d fans found.\n", count);
if (count > 4) {
count = 4;
printk(KERN_WARNING "applesmc: More than 4 fans found,"
" but at most 4 fans are supported"
" by the driver.\n");
}
while (fans_handled < count) {
ret = sysfs_create_group(&pdev->dev.kobj,
&fan_attribute_groups[fans_handled]);
if (ret)
goto out_fans;
fans_handled++;
}
for (i = 0;
temperature_sensors_sets[applesmc_temperature_set][i] != NULL;
i++) {
if (temperature_attributes[i] == NULL ||
label_attributes[i] == NULL) {
printk(KERN_ERR "applesmc: More temperature sensors "
"in temperature_sensors_sets (at least %i)"
"than available sysfs files in "
"temperature_attributes (%i), please report "
"this bug.\n", i, i-1);
goto out_temperature;
}
ret = sysfs_create_file(&pdev->dev.kobj,
temperature_attributes[i]);
if (ret)
goto out_temperature;
ret = sysfs_create_file(&pdev->dev.kobj,
label_attributes[i]);
if (ret)
goto out_temperature;
}
if (applesmc_accelerometer) {
ret = applesmc_create_accelerometer();
if (ret)
goto out_temperature;
}
if (applesmc_light) {
/* Add light sensor file */
ret = sysfs_create_file(&pdev->dev.kobj, &dev_attr_light.attr);
if (ret)
goto out_accelerometer;
/* Create the workqueue */
applesmc_led_wq = create_singlethread_workqueue("applesmc-led");
if (!applesmc_led_wq) {
ret = -ENOMEM;
goto out_light_sysfs;
}
/* register as a led device */
ret = led_classdev_register(&pdev->dev, &applesmc_backlight);
if (ret < 0)
goto out_light_wq;
}
hwmon_dev = hwmon_device_register(&pdev->dev);
if (IS_ERR(hwmon_dev)) {
ret = PTR_ERR(hwmon_dev);
goto out_light_ledclass;
}
printk(KERN_INFO "applesmc: driver successfully loaded.\n");
return 0;
out_light_ledclass:
if (applesmc_light)
led_classdev_unregister(&applesmc_backlight);
out_light_wq:
if (applesmc_light)
destroy_workqueue(applesmc_led_wq);
out_light_sysfs:
if (applesmc_light)
sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr);
out_accelerometer:
if (applesmc_accelerometer)
applesmc_release_accelerometer();
out_temperature:
sysfs_remove_group(&pdev->dev.kobj, &label_attributes_group);
sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
out_fans:
while (fans_handled)
sysfs_remove_group(&pdev->dev.kobj,
&fan_attribute_groups[--fans_handled]);
sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
out_name:
sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
out_device:
platform_device_unregister(pdev);
out_driver:
platform_driver_unregister(&applesmc_driver);
out_region:
release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS);
out:
printk(KERN_WARNING "applesmc: driver init failed (ret=%d)!\n", ret);
return ret;
}
static void __exit applesmc_exit(void)
{
hwmon_device_unregister(hwmon_dev);
if (applesmc_light) {
led_classdev_unregister(&applesmc_backlight);
destroy_workqueue(applesmc_led_wq);
sysfs_remove_file(&pdev->dev.kobj, &dev_attr_light.attr);
}
if (applesmc_accelerometer)
applesmc_release_accelerometer();
sysfs_remove_group(&pdev->dev.kobj, &label_attributes_group);
sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
while (fans_handled)
sysfs_remove_group(&pdev->dev.kobj,
&fan_attribute_groups[--fans_handled]);
sysfs_remove_group(&pdev->dev.kobj, &key_enumeration_group);
sysfs_remove_file(&pdev->dev.kobj, &dev_attr_name.attr);
platform_device_unregister(pdev);
platform_driver_unregister(&applesmc_driver);
release_region(APPLESMC_DATA_PORT, APPLESMC_NR_PORTS);
printk(KERN_INFO "applesmc: driver unloaded.\n");
}
module_init(applesmc_init);
module_exit(applesmc_exit);
MODULE_AUTHOR("Nicolas Boichat");
MODULE_DESCRIPTION("Apple SMC");
MODULE_LICENSE("GPL v2");
MODULE_DEVICE_TABLE(dmi, applesmc_whitelist);
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