asus-wmi: add thermal sensor

Signed-off-by: Corentin Chary <corentin.chary@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>

1 files changed, 21 insertions, 0 deletions

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index e60385df4af2..d01f767c7b69 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -44,6 +44,7 @@
 #include <linux/debugfs.h>
 #include <linux/seq_file.h>
 #include <linux/platform_device.h>
+#include <linux/thermal.h>
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 
@@ -930,7 +931,26 @@ static ssize_t asus_hwmon_pwm1(struct device *dev,
         return sprintf(buf, "%d\n", value);
 }
 
+static ssize_t asus_hwmon_temp1(struct device *dev,
+                                struct device_attribute *attr,
+                                char *buf)
+{
+        struct asus_wmi *asus = dev_get_drvdata(dev);
+        u32 value;
+        int err;
+
+        err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_THERMAL_CTRL, &value);
+
+        if (err < 0)
+                return err;
+
+        value = KELVIN_TO_CELSIUS((value & 0xFFFF)) * 1000;
+
+        return sprintf(buf, "%d\n", value);
+}
+
 static SENSOR_DEVICE_ATTR(pwm1, S_IRUGO, asus_hwmon_pwm1, NULL, 0);
+static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, asus_hwmon_temp1, NULL, 0);
 
 static ssize_t
 show_name(struct device *dev, struct device_attribute *attr, char *buf)
@@ -941,6 +961,7 @@ static SENSOR_DEVICE_ATTR(name, S_IRUGO, show_name, NULL, 0);
 
 static struct attribute *hwmon_attributes[] = {
         &sensor_dev_attr_pwm1.dev_attr.attr,
+        &sensor_dev_attr_temp1_input.dev_attr.attr,
         &sensor_dev_attr_name.dev_attr.attr,
         NULL
 };