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lg-laptop: Move setting of battery charge limit to common location

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For now leave also the driver specific location,
with deprecated warning in documentation.

Signed-off-by: Matan Ziv-Av <matan@svgalib.org>
Link: https://lore.kernel.org/r/eca2fa354f60b8a6e5a5c9c8e244fea56616970a.1645278914.git.matan@svgalib.org
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Matan Ziv-Av 2022-02-19 15:54:46 +02:00 committed by Hans de Goede
parent 4b1be2fe63
commit 07f5ed0eee
4 changed files with 52 additions and 9 deletions
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1
Documentation/ABI/testing/sysfs-platform-lg-laptop
View File

@ -17,6 +17,7 @@ Date: October 2018
KernelVersion: 4.20
Contact: "Matan Ziv-Av <matan@svgalib.org>
Description:
Deprecated use /sys/class/power_supply/CMB0/charge_control_end_threshold
Maximal battery charge level. Accepted values are 80 or 100.
What: /sys/devices/platform/lg-laptop/fan_mode

2
Documentation/admin-guide/laptops/lg-laptop.rst
View File

@ -38,7 +38,7 @@ FN lock.
Battery care limit
------------------
Writing 80/100 to /sys/devices/platform/lg-laptop/battery_care_limit
Writing 80/100 to /sys/class/power_supply/CMB0/charge_control_end_threshold
sets the maximum capacity to charge the battery. Limiting the charge
reduces battery capacity loss over time.

1
drivers/platform/x86/Kconfig
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@ -915,6 +915,7 @@ config COMPAL_LAPTOP
config LG_LAPTOP
tristate "LG Laptop Extras"
depends on ACPI
depends on ACPI_BATTERY
depends on ACPI_WMI
depends on INPUT
select INPUT_SPARSEKMAP

57
drivers/platform/x86/lg-laptop.c
View File

@ -17,6 +17,8 @@
#include <linux/platform_device.h>
#include <linux/types.h>
#include <acpi/battery.h>
#define LED_DEVICE(_name, max, flag) struct led_classdev _name = { \
.name = __stringify(_name), \
.max_brightness = max, \
@ -458,14 +460,14 @@ static ssize_t fn_lock_show(struct device *dev,
return sysfs_emit(buffer, "%d\n", status);
}
static ssize_t battery_care_limit_store(struct device *dev,
struct device_attribute *attr,
const char *buffer, size_t count)
static ssize_t charge_control_end_threshold_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
unsigned long value;
int ret;
ret = kstrtoul(buffer, 10, &value);
ret = kstrtoul(buf, 10, &value);
if (ret)
return ret;
@ -486,9 +488,9 @@ static ssize_t battery_care_limit_store(struct device *dev,
return -EINVAL;
}
static ssize_t battery_care_limit_show(struct device *dev,
struct device_attribute *attr,
char *buffer)
static ssize_t charge_control_end_threshold_show(struct device *device,
struct device_attribute *attr,
char *buf)
{
unsigned int status;
union acpi_object *r;
@ -520,15 +522,52 @@ static ssize_t battery_care_limit_show(struct device *dev,
if (status != 80 && status != 100)
status = 0;
return sysfs_emit(buffer, "%d\n", status);
return sysfs_emit(buf, "%d\n", status);
}
static ssize_t battery_care_limit_show(struct device *dev,
struct device_attribute *attr,
char *buffer)
{
return charge_control_end_threshold_show(dev, attr, buffer);
}
static ssize_t battery_care_limit_store(struct device *dev,
struct device_attribute *attr,
const char *buffer, size_t count)
{
return charge_control_end_threshold_store(dev, attr, buffer, count);
}
static DEVICE_ATTR_RW(fan_mode);
static DEVICE_ATTR_RW(usb_charge);
static DEVICE_ATTR_RW(reader_mode);
static DEVICE_ATTR_RW(fn_lock);
static DEVICE_ATTR_RW(charge_control_end_threshold);
static DEVICE_ATTR_RW(battery_care_limit);
static int lg_battery_add(struct power_supply *battery)
{
if (device_create_file(&battery->dev,
&dev_attr_charge_control_end_threshold))
return -ENODEV;
return 0;
}
static int lg_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 = lg_battery_add,
.remove_battery = lg_battery_remove,
.name = "LG Battery Extension",
};
static struct attribute *dev_attributes[] = {
&dev_attr_fan_mode.attr,
&dev_attr_usb_charge.attr,
@ -711,6 +750,7 @@ static int acpi_add(struct acpi_device *device)
led_classdev_register(&pf_device->dev, &tpad_led);
wmi_input_setup();
battery_hook_register(&battery_hook);
return 0;
@ -728,6 +768,7 @@ static int acpi_remove(struct acpi_device *device)
led_classdev_unregister(&tpad_led);
led_classdev_unregister(&kbd_backlight);
battery_hook_unregister(&battery_hook);
wmi_input_destroy();
platform_device_unregister(pf_device);
pf_device = NULL;