linux-kernel - [PATCH 11/16] asus-wmi: add thermal sensor

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Message-Id: <1309512881-2901-12-git-send-email-corentin.chary@gmail.com>
Date:	Fri,  1 Jul 2011 11:34:36 +0200
From:	Corentin Chary <corentin.chary@...il.com>
To:	platform-driver-x86@...r.kernel.org
Cc:	Corentin Chary <corentin.chary@...il.com>,
	Corentin Chary <corentincj@...aif.net> (maintainer:ASUS NOTEBOOKS
	AN...),
	Matthew Garrett <mjg@...hat.com> (maintainer:X86 PLATFORM DRIVERS),
	acpi4asus-user@...ts.sourceforge.net (open list:ASUS NOTEBOOKS AN...),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 11/16] asus-wmi: add thermal sensor

Signed-off-by: Corentin Chary <corentin.chary@...il.com>
---
 drivers/platform/x86/asus-wmi.c |   21 +++++++++++++++++++++
 1 files changed, 21 insertions(+), 0 deletions(-)

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index a972d8e..cc947cc 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
 };
-- 
1.7.3.4

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