Skip to content

L
linux
Commit fa5575cf authored by Alex Murray's avatar Alex Murray Committed by Jean Delvare
Browse files
Options

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: default avatarAlex Murray <murray.alex@gmail.com>
Signed-off-by: default avatarHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: default avatarJean Delvare <khali@linux-fr.org>
parent 405eaa1c
Hide whitespace changes
Inline Side-by-side
Showing with 147 additions and 1 deletion
drivers/hwmon/applesmc.c
View file @ fa5575cf
...@@ -660,6 +660,17 @@ static ssize_t applesmc_light_show(struct device *dev, ...@@ -660,6 +660,17 @@ static ssize_t applesmc_light_show(struct device *dev,
return snprintf(sysfsbuf, PAGE_SIZE, "(%d,%d)\n", left, right); 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 */ /* Displays degree Celsius * 1000 */
static ssize_t applesmc_show_temperature(struct device *dev, static ssize_t applesmc_show_temperature(struct device *dev,
struct device_attribute *devattr, char *sysfsbuf) struct device_attribute *devattr, char *sysfsbuf)
...@@ -1127,6 +1138,86 @@ static const struct attribute_group fan_attribute_groups[] = { ...@@ -1127,6 +1138,86 @@ static const struct attribute_group fan_attribute_groups[] = {
/* /*
* Temperature sensors sysfs entries. * 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, static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO,
applesmc_show_temperature, NULL, 0); applesmc_show_temperature, NULL, 0);
static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO, static SENSOR_DEVICE_ATTR(temp2_input, S_IRUGO,
...@@ -1208,6 +1299,50 @@ static SENSOR_DEVICE_ATTR(temp39_input, S_IRUGO, ...@@ -1208,6 +1299,50 @@ static SENSOR_DEVICE_ATTR(temp39_input, S_IRUGO,
static SENSOR_DEVICE_ATTR(temp40_input, S_IRUGO, static SENSOR_DEVICE_ATTR(temp40_input, S_IRUGO,
applesmc_show_temperature, NULL, 39); 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[] = { static struct attribute *temperature_attributes[] = {
&sensor_dev_attr_temp1_input.dev_attr.attr, &sensor_dev_attr_temp1_input.dev_attr.attr,
&sensor_dev_attr_temp2_input.dev_attr.attr, &sensor_dev_attr_temp2_input.dev_attr.attr,
...@@ -1255,6 +1390,10 @@ static struct attribute *temperature_attributes[] = { ...@@ -1255,6 +1390,10 @@ static struct attribute *temperature_attributes[] = {
static const struct attribute_group temperature_attributes_group = static const struct attribute_group temperature_attributes_group =
{ .attrs = temperature_attributes }; { .attrs = temperature_attributes };
static const struct attribute_group label_attributes_group = {
.attrs = label_attributes
};
/* Module stuff */ /* Module stuff */
/* /*
...@@ -1556,7 +1695,8 @@ static int __init applesmc_init(void) ...@@ -1556,7 +1695,8 @@ static int __init applesmc_init(void)
for (i = 0; for (i = 0;
temperature_sensors_sets[applesmc_temperature_set][i] != NULL; temperature_sensors_sets[applesmc_temperature_set][i] != NULL;
i++) { i++) {
if (temperature_attributes[i] == NULL) { if (temperature_attributes[i] == NULL ||
label_attributes[i] == NULL) {
printk(KERN_ERR "applesmc: More temperature sensors " printk(KERN_ERR "applesmc: More temperature sensors "
"in temperature_sensors_sets (at least %i)" "in temperature_sensors_sets (at least %i)"
"than available sysfs files in " "than available sysfs files in "
...@@ -1568,6 +1708,10 @@ static int __init applesmc_init(void) ...@@ -1568,6 +1708,10 @@ static int __init applesmc_init(void)
temperature_attributes[i]); temperature_attributes[i]);
if (ret) if (ret)
goto out_temperature; goto out_temperature;
ret = sysfs_create_file(&pdev->dev.kobj,
label_attributes[i]);
if (ret)
goto out_temperature;
} }
if (applesmc_accelerometer) { if (applesmc_accelerometer) {
...@@ -1618,6 +1762,7 @@ static int __init applesmc_init(void) ...@@ -1618,6 +1762,7 @@ static int __init applesmc_init(void)
if (applesmc_accelerometer) if (applesmc_accelerometer)
applesmc_release_accelerometer(); applesmc_release_accelerometer();
out_temperature: out_temperature:
sysfs_remove_group(&pdev->dev.kobj, &label_attributes_group);
sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group); sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
out_fans: out_fans:
while (fans_handled) while (fans_handled)
...@@ -1647,6 +1792,7 @@ static void __exit applesmc_exit(void) ...@@ -1647,6 +1792,7 @@ static void __exit applesmc_exit(void)
} }
if (applesmc_accelerometer) if (applesmc_accelerometer)
applesmc_release_accelerometer(); applesmc_release_accelerometer();
sysfs_remove_group(&pdev->dev.kobj, &label_attributes_group);
sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group); sysfs_remove_group(&pdev->dev.kobj, &temperature_attributes_group);
while (fans_handled) while (fans_handled)
sysfs_remove_group(&pdev->dev.kobj, sysfs_remove_group(&pdev->dev.kobj,
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7