diff mbox series

[3/3] platform/x86: asus-wmi: Refactor charge threshold to use the battery hooking API

Message ID 20190909173128.1670-3-kristian@klausen.dk (mailing list archive)
State Accepted, archived
Delegated to: Andy Shevchenko
Headers show
Series [1/3] platform/x86: asus-wmi: Reorder ASUS_WMI_CHARGE_THRESHOLD | expand

Commit Message

Kristian Klausen Sept. 9, 2019, 5:31 p.m. UTC
At the same time use the official naming for the knobs.

Tested on a Zenbook UX430UNR.

Signed-off-by: Kristian Klausen <kristian@klausen.dk>
---
 drivers/platform/x86/asus-wmi.c | 147 +++++++++++++++++++++-----------
 1 file changed, 98 insertions(+), 49 deletions(-)

Comments

Kristian Klausen Sept. 9, 2019, 5:36 p.m. UTC | #1
On 09.09.2019 19.31, Kristian Klausen wrote:
> At the same time use the official naming for the knobs.
>
> Tested on a Zenbook UX430UNR.
>
> Signed-off-by: Kristian Klausen <kristian@klausen.dk>
> ---
>   drivers/platform/x86/asus-wmi.c | 147 +++++++++++++++++++++-----------
>   1 file changed, 98 insertions(+), 49 deletions(-)
>
> diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
> index 92c149dc2e6e..4dad22c0384b 100644
> --- a/drivers/platform/x86/asus-wmi.c
> +++ b/drivers/platform/x86/asus-wmi.c
> @@ -26,6 +26,7 @@
>   #include <linux/rfkill.h>
>   #include <linux/pci.h>
>   #include <linux/pci_hotplug.h>
> +#include <linux/power_supply.h>
>   #include <linux/hwmon.h>
>   #include <linux/hwmon-sysfs.h>
>   #include <linux/debugfs.h>
> @@ -36,6 +37,7 @@
>   #include <linux/acpi.h>
>   #include <linux/dmi.h>
>   #include <acpi/video.h>
> +#include <acpi/battery.h>
>   
>   #include "asus-wmi.h"
>   
> @@ -195,7 +197,8 @@ struct asus_wmi {
>   	u8 fan_boost_mode_mask;
>   	u8 fan_boost_mode;
>   
> -	int charge_threshold;
> +	// The RSOC controls the maximum charging percentage.
> +	bool battery_rsoc_available;
>   
>   	struct hotplug_slot hotplug_slot;
>   	struct mutex hotplug_lock;
> @@ -369,6 +372,97 @@ static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id)
>   	return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT);
>   }
>   
> +/* Battery ********************************************************************/
> +
> +/* The battery maximum charging percentage */
> +static int charge_end_threshold;
> +
> +static ssize_t charge_control_end_threshold_store(struct device *dev,
> +						  struct device_attribute *attr,
> +						  const char *buf, size_t count)
> +{
> +	int value, ret, rv;
> +
> +	ret = kstrtouint(buf, 10, &value);
> +	if (ret)
> +		return ret;
> +
> +	if (value < 0 || value > 100)
> +		return -EINVAL;
> +
> +	ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv);
> +	if(ret)
A space is required here, I forgot to run ./scripts/checkpatch.pl before 
submitting the patch series.
> +		return ret;
> +
> +	if (rv != 1)
> +		return -EIO;
> +
> +	/* There isn't any method in the DSDT to read the threshold, so we
> +	 * save the threshold.
> +	 */
> +	charge_end_threshold = value;
> +	return count;
> +}
> +
> +static ssize_t charge_control_end_threshold_show(struct device *device,
> +						 struct device_attribute *attr,
> +						 char *buf)
> +{
> +	return sprintf(buf, "%d\n", charge_end_threshold);
> +}
> +
> +static DEVICE_ATTR_RW(charge_control_end_threshold);
> +
> +static int asus_wmi_battery_add(struct power_supply *battery)
> +{
> +	/* The WMI method does not provide a way to specific a battery, so we
> +	 * just assume it is the first battery.
> +	 */
> +	if (!strcmp(battery->desc->name, "BAT0") == 0)
> +		return -ENODEV;
> +
> +	if (device_create_file(&battery->dev,
> +	    &dev_attr_charge_control_end_threshold))
> +		return -ENODEV;
> +
> +	/* The charge threshold is only reset when the system is power cycled,
> +	 * and we can't get the current threshold so let set it to 100% when
> +	 * a battery is added.
> +	 */
> +	asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL);
> +	charge_end_threshold = 100;
> +
> +	return 0;
> +}
> +
> +static int asus_wmi_battery_remove(struct power_supply *battery)
> +{
> +	device_remove_file(&battery->dev,
> +			   &dev_attr_charge_control_end_threshold);
> +	return 0;
> +}
> +
> +static struct acpi_battery_hook battery_hook = {
> +	.add_battery = asus_wmi_battery_add,
> +	.remove_battery = asus_wmi_battery_remove,
> +	.name = "ASUS Battery Extension",
> +};
> +
> +static void asus_wmi_battery_init(struct asus_wmi *asus)
> +{
> +	asus->battery_rsoc_available = false;
> +	if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) {
> +		asus->battery_rsoc_available = true;
> +		battery_hook_register(&battery_hook);
> +	}
> +}
> +
> +static void asus_wmi_battery_exit(struct asus_wmi *asus)
> +{
> +	if (asus->battery_rsoc_available)
> +		battery_hook_unregister(&battery_hook);
> +}
> +
>   /* LEDs ***********************************************************************/
>   
>   /*
> @@ -2052,45 +2146,6 @@ static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
>   
>   static DEVICE_ATTR_WO(cpufv);
>   
> -
> -static ssize_t charge_threshold_store(struct device *dev,
> -				      struct device_attribute *attr,
> -				      const char *buf, size_t count)
> -{
> -	struct asus_wmi *asus = dev_get_drvdata(dev);
> -	int value, ret, rv;
> -
> -	ret = kstrtouint(buf, 10, &value);
> -	if (ret)
> -		return ret;
> -
> -	if (value < 0 || value > 100)
> -		return -EINVAL;
> -
> -	ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv);
> -	if (ret)
> -		return ret;
> -
> -	if (rv != 1)
> -		return -EIO;
> -
> -	/* There isn't any method in the DSDT to read the threshold, so we
> -	 * save the threshold.
> -	 */
> -	asus->charge_threshold = value;
> -	return count;
> -}
> -
> -static ssize_t charge_threshold_show(struct device *dev,
> -				     struct device_attribute *attr, char *buf)
> -{
> -	struct asus_wmi *asus = dev_get_drvdata(dev);
> -
> -	return sprintf(buf, "%d\n", asus->charge_threshold);
> -}
> -
> -static DEVICE_ATTR_RW(charge_threshold);
> -
>   static struct attribute *platform_attributes[] = {
>   	&dev_attr_cpufv.attr,
>   	&dev_attr_camera.attr,
> @@ -2099,7 +2154,6 @@ static struct attribute *platform_attributes[] = {
>   	&dev_attr_lid_resume.attr,
>   	&dev_attr_als_enable.attr,
>   	&dev_attr_fan_boost_mode.attr,
> -	&dev_attr_charge_threshold.attr,
>   	NULL
>   };
>   
> @@ -2123,8 +2177,6 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj,
>   		devid = ASUS_WMI_DEVID_ALS_ENABLE;
>   	else if (attr == &dev_attr_fan_boost_mode.attr)
>   		ok = asus->fan_boost_mode_available;
> -	else if (attr == &dev_attr_charge_threshold.attr)
> -		devid = ASUS_WMI_DEVID_RSOC;
>   
>   	if (devid != -1)
>   		ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
> @@ -2450,13 +2502,9 @@ static int asus_wmi_add(struct platform_device *pdev)
>   		goto fail_wmi_handler;
>   	}
>   
> +	asus_wmi_battery_init(asus);
> +
>   	asus_wmi_debugfs_init(asus);
> -	/* The charge threshold is only reset when the system is power cycled,
> -	 * and we can't get the current threshold so let set it to 100% on
> -	 * module load.
> -	 */
> -	asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL);
> -	asus->charge_threshold = 100;
>   
>   	return 0;
>   
> @@ -2491,6 +2539,7 @@ static int asus_wmi_remove(struct platform_device *device)
>   	asus_wmi_debugfs_exit(asus);
>   	asus_wmi_sysfs_exit(asus->platform_device);
>   	asus_fan_set_auto(asus);
> +	asus_wmi_battery_exit(asus);
>   
>   	kfree(asus);
>   	return 0;
Andy Shevchenko Sept. 10, 2019, 10:37 a.m. UTC | #2
On Tue, Sep 10, 2019 at 12:15 PM Kristian Klausen <kristian@klausen.dk> wrote:
>
> On 09.09.2019 19.31, Kristian Klausen wrote:
> > At the same time use the official naming for the knobs.
> >
> > Tested on a Zenbook UX430UNR.
> >

All three pushed to my review and testing queue, thanks!

> > Signed-off-by: Kristian Klausen <kristian@klausen.dk>
> > ---
> >   drivers/platform/x86/asus-wmi.c | 147 +++++++++++++++++++++-----------
> >   1 file changed, 98 insertions(+), 49 deletions(-)
> >
> > diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
> > index 92c149dc2e6e..4dad22c0384b 100644
> > --- a/drivers/platform/x86/asus-wmi.c
> > +++ b/drivers/platform/x86/asus-wmi.c
> > @@ -26,6 +26,7 @@
> >   #include <linux/rfkill.h>
> >   #include <linux/pci.h>
> >   #include <linux/pci_hotplug.h>
> > +#include <linux/power_supply.h>
> >   #include <linux/hwmon.h>
> >   #include <linux/hwmon-sysfs.h>
> >   #include <linux/debugfs.h>
> > @@ -36,6 +37,7 @@
> >   #include <linux/acpi.h>
> >   #include <linux/dmi.h>
> >   #include <acpi/video.h>
> > +#include <acpi/battery.h>
> >
> >   #include "asus-wmi.h"
> >
> > @@ -195,7 +197,8 @@ struct asus_wmi {
> >       u8 fan_boost_mode_mask;
> >       u8 fan_boost_mode;
> >
> > -     int charge_threshold;
> > +     // The RSOC controls the maximum charging percentage.
> > +     bool battery_rsoc_available;
> >
> >       struct hotplug_slot hotplug_slot;
> >       struct mutex hotplug_lock;
> > @@ -369,6 +372,97 @@ static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id)
> >       return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT);
> >   }
> >
> > +/* Battery ********************************************************************/
> > +
> > +/* The battery maximum charging percentage */
> > +static int charge_end_threshold;
> > +
> > +static ssize_t charge_control_end_threshold_store(struct device *dev,
> > +                                               struct device_attribute *attr,
> > +                                               const char *buf, size_t count)
> > +{
> > +     int value, ret, rv;
> > +
> > +     ret = kstrtouint(buf, 10, &value);
> > +     if (ret)
> > +             return ret;
> > +
> > +     if (value < 0 || value > 100)
> > +             return -EINVAL;
> > +
> > +     ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv);
> > +     if(ret)
> A space is required here, I forgot to run ./scripts/checkpatch.pl before
> submitting the patch series.
> > +             return ret;
> > +
> > +     if (rv != 1)
> > +             return -EIO;
> > +
> > +     /* There isn't any method in the DSDT to read the threshold, so we
> > +      * save the threshold.
> > +      */
> > +     charge_end_threshold = value;
> > +     return count;
> > +}
> > +
> > +static ssize_t charge_control_end_threshold_show(struct device *device,
> > +                                              struct device_attribute *attr,
> > +                                              char *buf)
> > +{
> > +     return sprintf(buf, "%d\n", charge_end_threshold);
> > +}
> > +
> > +static DEVICE_ATTR_RW(charge_control_end_threshold);
> > +
> > +static int asus_wmi_battery_add(struct power_supply *battery)
> > +{
> > +     /* The WMI method does not provide a way to specific a battery, so we
> > +      * just assume it is the first battery.
> > +      */
> > +     if (!strcmp(battery->desc->name, "BAT0") == 0)
> > +             return -ENODEV;
> > +
> > +     if (device_create_file(&battery->dev,
> > +         &dev_attr_charge_control_end_threshold))
> > +             return -ENODEV;
> > +
> > +     /* The charge threshold is only reset when the system is power cycled,
> > +      * and we can't get the current threshold so let set it to 100% when
> > +      * a battery is added.
> > +      */
> > +     asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL);
> > +     charge_end_threshold = 100;
> > +
> > +     return 0;
> > +}
> > +
> > +static int asus_wmi_battery_remove(struct power_supply *battery)
> > +{
> > +     device_remove_file(&battery->dev,
> > +                        &dev_attr_charge_control_end_threshold);
> > +     return 0;
> > +}
> > +
> > +static struct acpi_battery_hook battery_hook = {
> > +     .add_battery = asus_wmi_battery_add,
> > +     .remove_battery = asus_wmi_battery_remove,
> > +     .name = "ASUS Battery Extension",
> > +};
> > +
> > +static void asus_wmi_battery_init(struct asus_wmi *asus)
> > +{
> > +     asus->battery_rsoc_available = false;
> > +     if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) {
> > +             asus->battery_rsoc_available = true;
> > +             battery_hook_register(&battery_hook);
> > +     }
> > +}
> > +
> > +static void asus_wmi_battery_exit(struct asus_wmi *asus)
> > +{
> > +     if (asus->battery_rsoc_available)
> > +             battery_hook_unregister(&battery_hook);
> > +}
> > +
> >   /* LEDs ***********************************************************************/
> >
> >   /*
> > @@ -2052,45 +2146,6 @@ static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
> >
> >   static DEVICE_ATTR_WO(cpufv);
> >
> > -
> > -static ssize_t charge_threshold_store(struct device *dev,
> > -                                   struct device_attribute *attr,
> > -                                   const char *buf, size_t count)
> > -{
> > -     struct asus_wmi *asus = dev_get_drvdata(dev);
> > -     int value, ret, rv;
> > -
> > -     ret = kstrtouint(buf, 10, &value);
> > -     if (ret)
> > -             return ret;
> > -
> > -     if (value < 0 || value > 100)
> > -             return -EINVAL;
> > -
> > -     ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv);
> > -     if (ret)
> > -             return ret;
> > -
> > -     if (rv != 1)
> > -             return -EIO;
> > -
> > -     /* There isn't any method in the DSDT to read the threshold, so we
> > -      * save the threshold.
> > -      */
> > -     asus->charge_threshold = value;
> > -     return count;
> > -}
> > -
> > -static ssize_t charge_threshold_show(struct device *dev,
> > -                                  struct device_attribute *attr, char *buf)
> > -{
> > -     struct asus_wmi *asus = dev_get_drvdata(dev);
> > -
> > -     return sprintf(buf, "%d\n", asus->charge_threshold);
> > -}
> > -
> > -static DEVICE_ATTR_RW(charge_threshold);
> > -
> >   static struct attribute *platform_attributes[] = {
> >       &dev_attr_cpufv.attr,
> >       &dev_attr_camera.attr,
> > @@ -2099,7 +2154,6 @@ static struct attribute *platform_attributes[] = {
> >       &dev_attr_lid_resume.attr,
> >       &dev_attr_als_enable.attr,
> >       &dev_attr_fan_boost_mode.attr,
> > -     &dev_attr_charge_threshold.attr,
> >       NULL
> >   };
> >
> > @@ -2123,8 +2177,6 @@ static umode_t asus_sysfs_is_visible(struct kobject *kobj,
> >               devid = ASUS_WMI_DEVID_ALS_ENABLE;
> >       else if (attr == &dev_attr_fan_boost_mode.attr)
> >               ok = asus->fan_boost_mode_available;
> > -     else if (attr == &dev_attr_charge_threshold.attr)
> > -             devid = ASUS_WMI_DEVID_RSOC;
> >
> >       if (devid != -1)
> >               ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
> > @@ -2450,13 +2502,9 @@ static int asus_wmi_add(struct platform_device *pdev)
> >               goto fail_wmi_handler;
> >       }
> >
> > +     asus_wmi_battery_init(asus);
> > +
> >       asus_wmi_debugfs_init(asus);
> > -     /* The charge threshold is only reset when the system is power cycled,
> > -      * and we can't get the current threshold so let set it to 100% on
> > -      * module load.
> > -      */
> > -     asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL);
> > -     asus->charge_threshold = 100;
> >
> >       return 0;
> >
> > @@ -2491,6 +2539,7 @@ static int asus_wmi_remove(struct platform_device *device)
> >       asus_wmi_debugfs_exit(asus);
> >       asus_wmi_sysfs_exit(asus->platform_device);
> >       asus_fan_set_auto(asus);
> > +     asus_wmi_battery_exit(asus);
> >
> >       kfree(asus);
> >       return 0;
>
diff mbox series

Patch

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 92c149dc2e6e..4dad22c0384b 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -26,6 +26,7 @@ 
 #include <linux/rfkill.h>
 #include <linux/pci.h>
 #include <linux/pci_hotplug.h>
+#include <linux/power_supply.h>
 #include <linux/hwmon.h>
 #include <linux/hwmon-sysfs.h>
 #include <linux/debugfs.h>
@@ -36,6 +37,7 @@ 
 #include <linux/acpi.h>
 #include <linux/dmi.h>
 #include <acpi/video.h>
+#include <acpi/battery.h>
 
 #include "asus-wmi.h"
 
@@ -195,7 +197,8 @@  struct asus_wmi {
 	u8 fan_boost_mode_mask;
 	u8 fan_boost_mode;
 
-	int charge_threshold;
+	// The RSOC controls the maximum charging percentage.
+	bool battery_rsoc_available;
 
 	struct hotplug_slot hotplug_slot;
 	struct mutex hotplug_lock;
@@ -369,6 +372,97 @@  static bool asus_wmi_dev_is_present(struct asus_wmi *asus, u32 dev_id)
 	return status == 0 && (retval & ASUS_WMI_DSTS_PRESENCE_BIT);
 }
 
+/* Battery ********************************************************************/
+
+/* The battery maximum charging percentage */
+static int charge_end_threshold;
+
+static ssize_t charge_control_end_threshold_store(struct device *dev,
+						  struct device_attribute *attr,
+						  const char *buf, size_t count)
+{
+	int value, ret, rv;
+
+	ret = kstrtouint(buf, 10, &value);
+	if (ret)
+		return ret;
+
+	if (value < 0 || value > 100)
+		return -EINVAL;
+
+	ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv);
+	if(ret)
+		return ret;
+
+	if (rv != 1)
+		return -EIO;
+
+	/* There isn't any method in the DSDT to read the threshold, so we
+	 * save the threshold.
+	 */
+	charge_end_threshold = value;
+	return count;
+}
+
+static ssize_t charge_control_end_threshold_show(struct device *device,
+						 struct device_attribute *attr,
+						 char *buf)
+{
+	return sprintf(buf, "%d\n", charge_end_threshold);
+}
+
+static DEVICE_ATTR_RW(charge_control_end_threshold);
+
+static int asus_wmi_battery_add(struct power_supply *battery)
+{
+	/* The WMI method does not provide a way to specific a battery, so we
+	 * just assume it is the first battery.
+	 */
+	if (!strcmp(battery->desc->name, "BAT0") == 0)
+		return -ENODEV;
+
+	if (device_create_file(&battery->dev,
+	    &dev_attr_charge_control_end_threshold))
+		return -ENODEV;
+
+	/* The charge threshold is only reset when the system is power cycled,
+	 * and we can't get the current threshold so let set it to 100% when
+	 * a battery is added.
+	 */
+	asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL);
+	charge_end_threshold = 100;
+
+	return 0;
+}
+
+static int asus_wmi_battery_remove(struct power_supply *battery)
+{
+	device_remove_file(&battery->dev,
+			   &dev_attr_charge_control_end_threshold);
+	return 0;
+}
+
+static struct acpi_battery_hook battery_hook = {
+	.add_battery = asus_wmi_battery_add,
+	.remove_battery = asus_wmi_battery_remove,
+	.name = "ASUS Battery Extension",
+};
+
+static void asus_wmi_battery_init(struct asus_wmi *asus)
+{
+	asus->battery_rsoc_available = false;
+	if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_RSOC)) {
+		asus->battery_rsoc_available = true;
+		battery_hook_register(&battery_hook);
+	}
+}
+
+static void asus_wmi_battery_exit(struct asus_wmi *asus)
+{
+	if (asus->battery_rsoc_available)
+		battery_hook_unregister(&battery_hook);
+}
+
 /* LEDs ***********************************************************************/
 
 /*
@@ -2052,45 +2146,6 @@  static ssize_t cpufv_store(struct device *dev, struct device_attribute *attr,
 
 static DEVICE_ATTR_WO(cpufv);
 
-
-static ssize_t charge_threshold_store(struct device *dev,
-				      struct device_attribute *attr,
-				      const char *buf, size_t count)
-{
-	struct asus_wmi *asus = dev_get_drvdata(dev);
-	int value, ret, rv;
-
-	ret = kstrtouint(buf, 10, &value);
-	if (ret)
-		return ret;
-
-	if (value < 0 || value > 100)
-		return -EINVAL;
-
-	ret = asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, value, &rv);
-	if (ret)
-		return ret;
-
-	if (rv != 1)
-		return -EIO;
-
-	/* There isn't any method in the DSDT to read the threshold, so we
-	 * save the threshold.
-	 */
-	asus->charge_threshold = value;
-	return count;
-}
-
-static ssize_t charge_threshold_show(struct device *dev,
-				     struct device_attribute *attr, char *buf)
-{
-	struct asus_wmi *asus = dev_get_drvdata(dev);
-
-	return sprintf(buf, "%d\n", asus->charge_threshold);
-}
-
-static DEVICE_ATTR_RW(charge_threshold);
-
 static struct attribute *platform_attributes[] = {
 	&dev_attr_cpufv.attr,
 	&dev_attr_camera.attr,
@@ -2099,7 +2154,6 @@  static struct attribute *platform_attributes[] = {
 	&dev_attr_lid_resume.attr,
 	&dev_attr_als_enable.attr,
 	&dev_attr_fan_boost_mode.attr,
-	&dev_attr_charge_threshold.attr,
 	NULL
 };
 
@@ -2123,8 +2177,6 @@  static umode_t asus_sysfs_is_visible(struct kobject *kobj,
 		devid = ASUS_WMI_DEVID_ALS_ENABLE;
 	else if (attr == &dev_attr_fan_boost_mode.attr)
 		ok = asus->fan_boost_mode_available;
-	else if (attr == &dev_attr_charge_threshold.attr)
-		devid = ASUS_WMI_DEVID_RSOC;
 
 	if (devid != -1)
 		ok = !(asus_wmi_get_devstate_simple(asus, devid) < 0);
@@ -2450,13 +2502,9 @@  static int asus_wmi_add(struct platform_device *pdev)
 		goto fail_wmi_handler;
 	}
 
+	asus_wmi_battery_init(asus);
+
 	asus_wmi_debugfs_init(asus);
-	/* The charge threshold is only reset when the system is power cycled,
-	 * and we can't get the current threshold so let set it to 100% on
-	 * module load.
-	 */
-	asus_wmi_set_devstate(ASUS_WMI_DEVID_RSOC, 100, NULL);
-	asus->charge_threshold = 100;
 
 	return 0;
 
@@ -2491,6 +2539,7 @@  static int asus_wmi_remove(struct platform_device *device)
 	asus_wmi_debugfs_exit(asus);
 	asus_wmi_sysfs_exit(asus->platform_device);
 	asus_fan_set_auto(asus);
+	asus_wmi_battery_exit(asus);
 
 	kfree(asus);
 	return 0;