At the same time use the official naming for the knobs.
Tested on a Zenbook UX430UNR.
Signed-off-by: Kristian Klausen <kristian@xxxxxxxxxx>
---
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)
+ 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;
--
2.23.0
