Merge branches 'acpi-battery', 'acpi-doc' and 'acpi-pmic'
* acpi-battery: Revert "ACPI: battery: Add the ThinkPad "Not Charging" quirk" ACPI: battery: do not export degraded capacity values over 100 ACPI: battery: make function __battery_hook_unregister() static ACPI: battery: Add the ThinkPad "Not Charging" quirk thinkpad_acpi: Add support for battery thresholds power: add to_power_supply macro to the API battery: Add the battery hooking API * acpi-doc: ACPI: sysfs: Update device object sysfs documentation * acpi-pmic: ACPI / PMIC: Replace license boilerplate with SPDX license identifier
This commit is contained in:
Rafael J. Wysocki
commit
0c9ed61bdd
@ -56,3 +56,40 @@ Description:
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Writing 1 to this attribute will trigger hot removal of
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this device object. This file exists for every device
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object that has _EJ0 method.
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What: /sys/bus/acpi/devices/.../status
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Date: Jan, 2014
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Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
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Description:
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(RO) Returns the ACPI device status: enabled, disabled or
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functioning or present, if the method _STA is present.
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The return value is a decimal integer representing the device's
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status bitmap:
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Bit [0] – Set if the device is present.
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Bit [1] – Set if the device is enabled and decoding its
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resources.
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Bit [2] – Set if the device should be shown in the UI.
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Bit [3] – Set if the device is functioning properly (cleared if
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device failed its diagnostics).
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Bit [4] – Set if the battery is present.
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Bits [31:5] – Reserved (must be cleared)
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If bit [0] is clear, then bit 1 must also be clear (a device
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that is not present cannot be enabled).
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Bit 0 can be clear (not present) with bit [3] set (device is
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functional). This case is used to indicate a valid device for
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which no device driver should be loaded.
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More special cases are covered in the ACPI specification.
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What: /sys/bus/acpi/devices/.../hrv
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Date: Apr, 2016
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Contact: Rafael J. Wysocki <rjw@rjwysocki.net>
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Description:
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(RO) Allows users to read the hardware version of non-PCI
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hardware, if the _HRV control method is present. It is mostly
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useful for non-PCI devices because lspci can list the hardware
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version for PCI devices.
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@ -33,7 +33,7 @@
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#include <linux/platform_device.h>
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#include <linux/power_supply.h>
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#include <linux/acpi.h>
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#include "battery.h"
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#include <acpi/battery.h>
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#define PREFIX "ACPI: "
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@ -21,8 +21,12 @@
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/mutex.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/jiffies.h>
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@ -42,7 +46,7 @@
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#include <linux/acpi.h>
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#include <linux/power_supply.h>
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#include "battery.h"
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#include <acpi/battery.h>
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#define PREFIX "ACPI: "
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@ -115,6 +119,10 @@ enum {
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post-1.29 BIOS), but as of Nov. 2012, no such update is
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available for the 2010 models. */
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ACPI_BATTERY_QUIRK_THINKPAD_MAH,
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/* for batteries reporting current capacity with design capacity
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* on a full charge, but showing degradation in full charge cap.
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*/
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ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE,
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};
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struct acpi_battery {
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@ -124,6 +132,7 @@ struct acpi_battery {
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struct power_supply_desc bat_desc;
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struct acpi_device *device;
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struct notifier_block pm_nb;
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struct list_head list;
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unsigned long update_time;
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int revision;
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int rate_now;
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@ -200,6 +209,12 @@ static int acpi_battery_is_charged(struct acpi_battery *battery)
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return 0;
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}
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static bool acpi_battery_is_degraded(struct acpi_battery *battery)
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{
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return battery->full_charge_capacity && battery->design_capacity &&
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battery->full_charge_capacity < battery->design_capacity;
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}
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static int acpi_battery_get_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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@ -471,6 +486,10 @@ static int extract_battery_info(const int use_bix,
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it's impossible to tell if they would need an adjustment
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or not if their values were higher. */
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}
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if (test_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags) &&
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battery->capacity_now > battery->full_charge_capacity)
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battery->capacity_now = battery->full_charge_capacity;
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return result;
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}
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@ -563,6 +582,10 @@ static int acpi_battery_get_state(struct acpi_battery *battery)
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battery->capacity_now = battery->capacity_now *
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10000 / battery->design_voltage;
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}
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if (test_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags) &&
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battery->capacity_now > battery->full_charge_capacity)
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battery->capacity_now = battery->full_charge_capacity;
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return result;
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}
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@ -626,6 +649,139 @@ static const struct device_attribute alarm_attr = {
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.store = acpi_battery_alarm_store,
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};
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/*
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* The Battery Hooking API
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*
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* This API is used inside other drivers that need to expose
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* platform-specific behaviour within the generic driver in a
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* generic way.
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*
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*/
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static LIST_HEAD(acpi_battery_list);
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static LIST_HEAD(battery_hook_list);
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static DEFINE_MUTEX(hook_mutex);
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static void __battery_hook_unregister(struct acpi_battery_hook *hook, int lock)
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{
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struct acpi_battery *battery;
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/*
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* In order to remove a hook, we first need to
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* de-register all the batteries that are registered.
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*/
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if (lock)
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mutex_lock(&hook_mutex);
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list_for_each_entry(battery, &acpi_battery_list, list) {
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hook->remove_battery(battery->bat);
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}
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list_del(&hook->list);
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if (lock)
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mutex_unlock(&hook_mutex);
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pr_info("extension unregistered: %s\n", hook->name);
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}
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void battery_hook_unregister(struct acpi_battery_hook *hook)
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{
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__battery_hook_unregister(hook, 1);
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}
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EXPORT_SYMBOL_GPL(battery_hook_unregister);
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void battery_hook_register(struct acpi_battery_hook *hook)
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{
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struct acpi_battery *battery;
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mutex_lock(&hook_mutex);
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INIT_LIST_HEAD(&hook->list);
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list_add(&hook->list, &battery_hook_list);
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/*
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* Now that the driver is registered, we need
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* to notify the hook that a battery is available
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* for each battery, so that the driver may add
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* its attributes.
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*/
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list_for_each_entry(battery, &acpi_battery_list, list) {
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if (hook->add_battery(battery->bat)) {
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/*
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* If a add-battery returns non-zero,
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* the registration of the extension has failed,
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* and we will not add it to the list of loaded
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* hooks.
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*/
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pr_err("extension failed to load: %s", hook->name);
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__battery_hook_unregister(hook, 0);
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return;
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}
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}
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pr_info("new extension: %s\n", hook->name);
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mutex_unlock(&hook_mutex);
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}
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EXPORT_SYMBOL_GPL(battery_hook_register);
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/*
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* This function gets called right after the battery sysfs
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* attributes have been added, so that the drivers that
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* define custom sysfs attributes can add their own.
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*/
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static void battery_hook_add_battery(struct acpi_battery *battery)
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{
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struct acpi_battery_hook *hook_node;
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mutex_lock(&hook_mutex);
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INIT_LIST_HEAD(&battery->list);
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list_add(&battery->list, &acpi_battery_list);
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/*
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* Since we added a new battery to the list, we need to
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* iterate over the hooks and call add_battery for each
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* hook that was registered. This usually happens
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* when a battery gets hotplugged or initialized
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* during the battery module initialization.
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*/
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list_for_each_entry(hook_node, &battery_hook_list, list) {
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if (hook_node->add_battery(battery->bat)) {
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/*
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* The notification of the extensions has failed, to
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* prevent further errors we will unload the extension.
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*/
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__battery_hook_unregister(hook_node, 0);
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pr_err("error in extension, unloading: %s",
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hook_node->name);
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}
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}
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mutex_unlock(&hook_mutex);
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}
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static void battery_hook_remove_battery(struct acpi_battery *battery)
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{
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struct acpi_battery_hook *hook;
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mutex_lock(&hook_mutex);
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/*
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* Before removing the hook, we need to remove all
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* custom attributes from the battery.
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*/
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list_for_each_entry(hook, &battery_hook_list, list) {
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hook->remove_battery(battery->bat);
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}
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/* Then, just remove the battery from the list */
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list_del(&battery->list);
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mutex_unlock(&hook_mutex);
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}
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static void __exit battery_hook_exit(void)
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{
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struct acpi_battery_hook *hook;
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struct acpi_battery_hook *ptr;
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/*
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* At this point, the acpi_bus_unregister_driver()
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* has called remove for all batteries. We just
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* need to remove the hooks.
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*/
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list_for_each_entry_safe(hook, ptr, &battery_hook_list, list) {
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__battery_hook_unregister(hook, 1);
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}
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mutex_destroy(&hook_mutex);
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}
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static int sysfs_add_battery(struct acpi_battery *battery)
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{
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struct power_supply_config psy_cfg = { .drv_data = battery, };
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@ -653,6 +809,7 @@ static int sysfs_add_battery(struct acpi_battery *battery)
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battery->bat = NULL;
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return result;
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}
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battery_hook_add_battery(battery);
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return device_create_file(&battery->bat->dev, &alarm_attr);
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}
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@ -663,7 +820,7 @@ static void sysfs_remove_battery(struct acpi_battery *battery)
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mutex_unlock(&battery->sysfs_lock);
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return;
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}
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battery_hook_remove_battery(battery);
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device_remove_file(&battery->bat->dev, &alarm_attr);
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power_supply_unregister(battery->bat);
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battery->bat = NULL;
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@ -739,6 +896,15 @@ static void acpi_battery_quirks(struct acpi_battery *battery)
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}
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}
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}
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if (test_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags))
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return;
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if (acpi_battery_is_degraded(battery) &&
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battery->capacity_now > battery->full_charge_capacity) {
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set_bit(ACPI_BATTERY_QUIRK_DEGRADED_FULL_CHARGE, &battery->flags);
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battery->capacity_now = battery->full_charge_capacity;
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}
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}
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static int acpi_battery_update(struct acpi_battery *battery, bool resume)
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@ -1357,8 +1523,10 @@ static int __init acpi_battery_init(void)
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static void __exit acpi_battery_exit(void)
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{
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async_synchronize_cookie(async_cookie + 1);
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if (battery_driver_registered)
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if (battery_driver_registered) {
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acpi_bus_unregister_driver(&acpi_battery_driver);
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battery_hook_exit();
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}
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#ifdef CONFIG_ACPI_PROCFS_POWER
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if (acpi_battery_dir)
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acpi_unlock_battery_dir(acpi_battery_dir);
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@ -1,11 +0,0 @@
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/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ACPI_BATTERY_H
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#define __ACPI_BATTERY_H
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#define ACPI_BATTERY_CLASS "battery"
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#define ACPI_BATTERY_NOTIFY_STATUS 0x80
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#define ACPI_BATTERY_NOTIFY_INFO 0x81
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#define ACPI_BATTERY_NOTIFY_THRESHOLD 0x82
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#endif
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@ -1,3 +1,4 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* TI TPS68470 PMIC operation region driver
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*
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@ -5,15 +6,6 @@
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*
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* Author: Rajmohan Mani <rajmohan.mani@intel.com>
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*
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* This program is free software; you can redistribute it and/or
|
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* modify it under the terms of the GNU General Public License version
|
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* 2 as published by the Free Software Foundation.
|
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*
|
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
|
||||
* kind, whether express or implied; without even the implied warranty
|
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
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*
|
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* Based on drivers/acpi/pmic/intel_pmic* drivers
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*/
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@ -32,9 +32,9 @@
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#include <linux/delay.h>
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#include <linux/power_supply.h>
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#include <linux/platform_data/x86/apple.h>
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#include <acpi/battery.h>
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|
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#include "sbshc.h"
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#include "battery.h"
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#define PREFIX "ACPI: "
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@ -439,6 +439,7 @@ config SURFACE3_WMI
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config THINKPAD_ACPI
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tristate "ThinkPad ACPI Laptop Extras"
|
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depends on ACPI
|
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depends on ACPI_BATTERY
|
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depends on INPUT
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depends on RFKILL || RFKILL = n
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depends on ACPI_VIDEO || ACPI_VIDEO = n
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@ -23,7 +23,7 @@
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#define TPACPI_VERSION "0.25"
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#define TPACPI_VERSION "0.26"
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#define TPACPI_SYSFS_VERSION 0x030000
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|
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/*
|
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@ -66,6 +66,7 @@
|
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#include <linux/seq_file.h>
|
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#include <linux/sysfs.h>
|
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#include <linux/backlight.h>
|
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#include <linux/bitops.h>
|
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#include <linux/fb.h>
|
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#include <linux/platform_device.h>
|
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#include <linux/hwmon.h>
|
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@ -78,11 +79,13 @@
|
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#include <linux/workqueue.h>
|
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#include <linux/acpi.h>
|
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#include <linux/pci_ids.h>
|
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#include <linux/power_supply.h>
|
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#include <linux/thinkpad_acpi.h>
|
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#include <sound/core.h>
|
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#include <sound/control.h>
|
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#include <sound/initval.h>
|
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#include <linux/uaccess.h>
|
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#include <acpi/battery.h>
|
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#include <acpi/video.h>
|
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|
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/* ThinkPad CMOS commands */
|
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@ -335,6 +338,7 @@ static struct {
|
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u32 sensors_pdev_attrs_registered:1;
|
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u32 hotkey_poll_active:1;
|
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u32 has_adaptive_kbd:1;
|
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u32 battery:1;
|
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} tp_features;
|
||||
|
||||
static struct {
|
||||
@ -9209,6 +9213,385 @@ static struct ibm_struct mute_led_driver_data = {
|
||||
.resume = mute_led_resume,
|
||||
};
|
||||
|
||||
/*
|
||||
* Battery Wear Control Driver
|
||||
* Contact: Ognjen Galic <smclt30p@gmail.com>
|
||||
*/
|
||||
|
||||
/* Metadata */
|
||||
|
||||
#define GET_START "BCTG"
|
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#define SET_START "BCCS"
|
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#define GET_STOP "BCSG"
|
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#define SET_STOP "BCSS"
|
||||
|
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#define START_ATTR "charge_start_threshold"
|
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#define STOP_ATTR "charge_stop_threshold"
|
||||
|
||||
enum {
|
||||
BAT_ANY = 0,
|
||||
BAT_PRIMARY = 1,
|
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BAT_SECONDARY = 2
|
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};
|
||||
|
||||
enum {
|
||||
/* Error condition bit */
|
||||
METHOD_ERR = BIT(31),
|
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};
|
||||
|
||||
enum {
|
||||
/* This is used in the get/set helpers */
|
||||
THRESHOLD_START,
|
||||
THRESHOLD_STOP,
|
||||
};
|
||||
|
||||
struct tpacpi_battery_data {
|
||||
int charge_start;
|
||||
int start_support;
|
||||
int charge_stop;
|
||||
int stop_support;
|
||||
};
|
||||
|
||||
struct tpacpi_battery_driver_data {
|
||||
struct tpacpi_battery_data batteries[3];
|
||||
int individual_addressing;
|
||||
};
|
||||
|
||||
static struct tpacpi_battery_driver_data battery_info;
|
||||
|
||||
/* ACPI helpers/functions/probes */
|
||||
|
||||
/**
|
||||
* This evaluates a ACPI method call specific to the battery
|
||||
* ACPI extension. The specifics are that an error is marked
|
||||
* in the 32rd bit of the response, so we just check that here.
|
||||
*/
|
||||
static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param)
|
||||
{
|
||||
int response;
|
||||
|
||||
if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) {
|
||||
acpi_handle_err(hkey_handle, "%s: evaluate failed", method);
|
||||
return AE_ERROR;
|
||||
}
|
||||
if (response & METHOD_ERR) {
|
||||
acpi_handle_err(hkey_handle,
|
||||
"%s evaluated but flagged as error", method);
|
||||
return AE_ERROR;
|
||||
}
|
||||
*ret = response;
|
||||
return AE_OK;
|
||||
}
|
||||
|
||||
static int tpacpi_battery_get(int what, int battery, int *ret)
|
||||
{
|
||||
switch (what) {
|
||||
case THRESHOLD_START:
|
||||
if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery))
|
||||
return -ENODEV;
|
||||
|
||||
/* The value is in the low 8 bits of the response */
|
||||
*ret = *ret & 0xFF;
|
||||
return 0;
|
||||
case THRESHOLD_STOP:
|
||||
if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery))
|
||||
return -ENODEV;
|
||||
/* Value is in lower 8 bits */
|
||||
*ret = *ret & 0xFF;
|
||||
/*
|
||||
* On the stop value, if we return 0 that
|
||||
* does not make any sense. 0 means Default, which
|
||||
* means that charging stops at 100%, so we return
|
||||
* that.
|
||||
*/
|
||||
if (*ret == 0)
|
||||
*ret = 100;
|
||||
return 0;
|
||||
default:
|
||||
pr_crit("wrong parameter: %d", what);
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
static int tpacpi_battery_set(int what, int battery, int value)
|
||||
{
|
||||
int param, ret;
|
||||
/* The first 8 bits are the value of the threshold */
|
||||
param = value;
|
||||
/* The battery ID is in bits 8-9, 2 bits */
|
||||
param |= battery << 8;
|
||||
|
||||
switch (what) {
|
||||
case THRESHOLD_START:
|
||||
if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) {
|
||||
pr_err("failed to set charge threshold on battery %d",
|
||||
battery);
|
||||
return -ENODEV;
|
||||
}
|
||||
return 0;
|
||||
case THRESHOLD_STOP:
|
||||
if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) {
|
||||
pr_err("failed to set stop threshold: %d", battery);
|
||||
return -ENODEV;
|
||||
}
|
||||
return 0;
|
||||
default:
|
||||
pr_crit("wrong parameter: %d", what);
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
static int tpacpi_battery_probe(int battery)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
memset(&battery_info, 0, sizeof(struct tpacpi_battery_driver_data));
|
||||
/*
|
||||
* 1) Get the current start threshold
|
||||
* 2) Check for support
|
||||
* 3) Get the current stop threshold
|
||||
* 4) Check for support
|
||||
*/
|
||||
if (acpi_has_method(hkey_handle, GET_START)) {
|
||||
if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) {
|
||||
pr_err("Error probing battery %d\n", battery);
|
||||
return -ENODEV;
|
||||
}
|
||||
/* Individual addressing is in bit 9 */
|
||||
if (ret & BIT(9))
|
||||
battery_info.individual_addressing = true;
|
||||
/* Support is marked in bit 8 */
|
||||
if (ret & BIT(8))
|
||||
battery_info.batteries[battery].start_support = 1;
|
||||
else
|
||||
return -ENODEV;
|
||||
if (tpacpi_battery_get(THRESHOLD_START, battery,
|
||||
&battery_info.batteries[battery].charge_start)) {
|
||||
pr_err("Error probing battery %d\n", battery);
|
||||
return -ENODEV;
|
||||
}
|
||||
}
|
||||
if (acpi_has_method(hkey_handle, GET_STOP)) {
|
||||
if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) {
|
||||
pr_err("Error probing battery stop; %d\n", battery);
|
||||
return -ENODEV;
|
||||
}
|
||||
/* Support is marked in bit 8 */
|
||||
if (ret & BIT(8))
|
||||
battery_info.batteries[battery].stop_support = 1;
|
||||
else
|
||||
return -ENODEV;
|
||||
if (tpacpi_battery_get(THRESHOLD_STOP, battery,
|
||||
&battery_info.batteries[battery].charge_stop)) {
|
||||
pr_err("Error probing battery stop: %d\n", battery);
|
||||
return -ENODEV;
|
||||
}
|
||||
}
|
||||
pr_info("battery %d registered (start %d, stop %d)",
|
||||
battery,
|
||||
battery_info.batteries[battery].charge_start,
|
||||
battery_info.batteries[battery].charge_stop);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* General helper functions */
|
||||
|
||||
static int tpacpi_battery_get_id(const char *battery_name)
|
||||
{
|
||||
|
||||
if (strcmp(battery_name, "BAT0") == 0)
|
||||
return BAT_PRIMARY;
|
||||
if (strcmp(battery_name, "BAT1") == 0)
|
||||
return BAT_SECONDARY;
|
||||
/*
|
||||
* If for some reason the battery is not BAT0 nor is it
|
||||
* BAT1, we will assume it's the default, first battery,
|
||||
* AKA primary.
|
||||
*/
|
||||
pr_warn("unknown battery %s, assuming primary", battery_name);
|
||||
return BAT_PRIMARY;
|
||||
}
|
||||
|
||||
/* sysfs interface */
|
||||
|
||||
static ssize_t tpacpi_battery_store(int what,
|
||||
struct device *dev,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
struct power_supply *supply = to_power_supply(dev);
|
||||
unsigned long value;
|
||||
int battery, rval;
|
||||
/*
|
||||
* Some systems have support for more than
|
||||
* one battery. If that is the case,
|
||||
* tpacpi_battery_probe marked that addressing
|
||||
* them individually is supported, so we do that
|
||||
* based on the device struct.
|
||||
*
|
||||
* On systems that are not supported, we assume
|
||||
* the primary as most of the ACPI calls fail
|
||||
* with "Any Battery" as the parameter.
|
||||
*/
|
||||
if (battery_info.individual_addressing)
|
||||
/* BAT_PRIMARY or BAT_SECONDARY */
|
||||
battery = tpacpi_battery_get_id(supply->desc->name);
|
||||
else
|
||||
battery = BAT_PRIMARY;
|
||||
|
||||
rval = kstrtoul(buf, 10, &value);
|
||||
if (rval)
|
||||
return rval;
|
||||
|
||||
switch (what) {
|
||||
case THRESHOLD_START:
|
||||
if (!battery_info.batteries[battery].start_support)
|
||||
return -ENODEV;
|
||||
/* valid values are [0, 99] */
|
||||
if (value < 0 || value > 99)
|
||||
return -EINVAL;
|
||||
if (value > battery_info.batteries[battery].charge_stop)
|
||||
return -EINVAL;
|
||||
if (tpacpi_battery_set(THRESHOLD_START, battery, value))
|
||||
return -ENODEV;
|
||||
battery_info.batteries[battery].charge_start = value;
|
||||
return count;
|
||||
|
||||
case THRESHOLD_STOP:
|
||||
if (!battery_info.batteries[battery].stop_support)
|
||||
return -ENODEV;
|
||||
/* valid values are [1, 100] */
|
||||
if (value < 1 || value > 100)
|
||||
return -EINVAL;
|
||||
if (value < battery_info.batteries[battery].charge_start)
|
||||
return -EINVAL;
|
||||
battery_info.batteries[battery].charge_stop = value;
|
||||
/*
|
||||
* When 100 is passed to stop, we need to flip
|
||||
* it to 0 as that the EC understands that as
|
||||
* "Default", which will charge to 100%
|
||||
*/
|
||||
if (value == 100)
|
||||
value = 0;
|
||||
if (tpacpi_battery_set(THRESHOLD_STOP, battery, value))
|
||||
return -EINVAL;
|
||||
return count;
|
||||
default:
|
||||
pr_crit("Wrong parameter: %d", what);
|
||||
return -EINVAL;
|
||||
}
|
||||
return count;
|
||||
}
|
||||
|
||||
static ssize_t tpacpi_battery_show(int what,
|
||||
struct device *dev,
|
||||
char *buf)
|
||||
{
|
||||
struct power_supply *supply = to_power_supply(dev);
|
||||
int ret, battery;
|
||||
/*
|
||||
* Some systems have support for more than
|
||||
* one battery. If that is the case,
|
||||
* tpacpi_battery_probe marked that addressing
|
||||
* them individually is supported, so we;
|
||||
* based on the device struct.
|
||||
*
|
||||
* On systems that are not supported, we assume
|
||||
* the primary as most of the ACPI calls fail
|
||||
* with "Any Battery" as the parameter.
|
||||
*/
|
||||
if (battery_info.individual_addressing)
|
||||
/* BAT_PRIMARY or BAT_SECONDARY */
|
||||
battery = tpacpi_battery_get_id(supply->desc->name);
|
||||
else
|
||||
battery = BAT_PRIMARY;
|
||||
if (tpacpi_battery_get(what, battery, &ret))
|
||||
return -ENODEV;
|
||||
return sprintf(buf, "%d\n", ret);
|
||||
}
|
||||
|
||||
static ssize_t charge_start_threshold_show(struct device *device,
|
||||
struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
return tpacpi_battery_show(THRESHOLD_START, device, buf);
|
||||
}
|
||||
|
||||
static ssize_t charge_stop_threshold_show(struct device *device,
|
||||
struct device_attribute *attr,
|
||||
char *buf)
|
||||
{
|
||||
return tpacpi_battery_show(THRESHOLD_STOP, device, buf);
|
||||
}
|
||||
|
||||
static ssize_t charge_start_threshold_store(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
return tpacpi_battery_store(THRESHOLD_START, dev, buf, count);
|
||||
}
|
||||
|
||||
static ssize_t charge_stop_threshold_store(struct device *dev,
|
||||
struct device_attribute *attr,
|
||||
const char *buf, size_t count)
|
||||
{
|
||||
return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count);
|
||||
}
|
||||
|
||||
static DEVICE_ATTR_RW(charge_start_threshold);
|
||||
static DEVICE_ATTR_RW(charge_stop_threshold);
|
||||
|
||||
static struct attribute *tpacpi_battery_attrs[] = {
|
||||
&dev_attr_charge_start_threshold.attr,
|
||||
&dev_attr_charge_stop_threshold.attr,
|
||||
NULL,
|
||||
};
|
||||
|
||||
ATTRIBUTE_GROUPS(tpacpi_battery);
|
||||
|
||||
/* ACPI battery hooking */
|
||||
|
||||
static int tpacpi_battery_add(struct power_supply *battery)
|
||||
{
|
||||
int batteryid = tpacpi_battery_get_id(battery->desc->name);
|
||||
|
||||
if (tpacpi_battery_probe(batteryid))
|
||||
return -ENODEV;
|
||||
if (device_add_groups(&battery->dev, tpacpi_battery_groups))
|
||||
return -ENODEV;
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int tpacpi_battery_remove(struct power_supply *battery)
|
||||
{
|
||||
device_remove_groups(&battery->dev, tpacpi_battery_groups);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct acpi_battery_hook battery_hook = {
|
||||
.add_battery = tpacpi_battery_add,
|
||||
.remove_battery = tpacpi_battery_remove,
|
||||
.name = "ThinkPad Battery Extension",
|
||||
};
|
||||
|
||||
/* Subdriver init/exit */
|
||||
|
||||
static int __init tpacpi_battery_init(struct ibm_init_struct *ibm)
|
||||
{
|
||||
battery_hook_register(&battery_hook);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void tpacpi_battery_exit(void)
|
||||
{
|
||||
battery_hook_unregister(&battery_hook);
|
||||
}
|
||||
|
||||
static struct ibm_struct battery_driver_data = {
|
||||
.name = "battery",
|
||||
.exit = tpacpi_battery_exit,
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
****************************************************************************
|
||||
*
|
||||
@ -9655,6 +10038,10 @@ static struct ibm_init_struct ibms_init[] __initdata = {
|
||||
.init = mute_led_init,
|
||||
.data = &mute_led_driver_data,
|
||||
},
|
||||
{
|
||||
.init = tpacpi_battery_init,
|
||||
.data = &battery_driver_data,
|
||||
},
|
||||
};
|
||||
|
||||
static int __init set_ibm_param(const char *val, const struct kernel_param *kp)
|
||||
|
||||
@ -56,11 +56,6 @@ to_ds2780_device_info(struct power_supply *psy)
|
||||
return power_supply_get_drvdata(psy);
|
||||
}
|
||||
|
||||
static inline struct power_supply *to_power_supply(struct device *dev)
|
||||
{
|
||||
return dev_get_drvdata(dev);
|
||||
}
|
||||
|
||||
static inline int ds2780_battery_io(struct ds2780_device_info *dev_info,
|
||||
char *buf, int addr, size_t count, int io)
|
||||
{
|
||||
|
||||
@ -54,11 +54,6 @@ to_ds2781_device_info(struct power_supply *psy)
|
||||
return power_supply_get_drvdata(psy);
|
||||
}
|
||||
|
||||
static inline struct power_supply *to_power_supply(struct device *dev)
|
||||
{
|
||||
return dev_get_drvdata(dev);
|
||||
}
|
||||
|
||||
static inline int ds2781_battery_io(struct ds2781_device_info *dev_info,
|
||||
char *buf, int addr, size_t count, int io)
|
||||
{
|
||||
|
||||
@ -668,7 +668,7 @@ EXPORT_SYMBOL_GPL(power_supply_powers);
|
||||
|
||||
static void power_supply_dev_release(struct device *dev)
|
||||
{
|
||||
struct power_supply *psy = container_of(dev, struct power_supply, dev);
|
||||
struct power_supply *psy = to_power_supply(dev);
|
||||
dev_dbg(dev, "%s\n", __func__);
|
||||
kfree(psy);
|
||||
}
|
||||
|
||||
21
include/acpi/battery.h
Normal file
21
include/acpi/battery.h
Normal file
@ -0,0 +1,21 @@
|
||||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
#ifndef __ACPI_BATTERY_H
|
||||
#define __ACPI_BATTERY_H
|
||||
|
||||
#define ACPI_BATTERY_CLASS "battery"
|
||||
|
||||
#define ACPI_BATTERY_NOTIFY_STATUS 0x80
|
||||
#define ACPI_BATTERY_NOTIFY_INFO 0x81
|
||||
#define ACPI_BATTERY_NOTIFY_THRESHOLD 0x82
|
||||
|
||||
struct acpi_battery_hook {
|
||||
const char *name;
|
||||
int (*add_battery)(struct power_supply *battery);
|
||||
int (*remove_battery)(struct power_supply *battery);
|
||||
struct list_head list;
|
||||
};
|
||||
|
||||
void battery_hook_register(struct acpi_battery_hook *hook);
|
||||
void battery_hook_unregister(struct acpi_battery_hook *hook);
|
||||
|
||||
#endif
|
||||
@ -371,6 +371,8 @@ devm_power_supply_register_no_ws(struct device *parent,
|
||||
extern void power_supply_unregister(struct power_supply *psy);
|
||||
extern int power_supply_powers(struct power_supply *psy, struct device *dev);
|
||||
|
||||
#define to_power_supply(device) container_of(device, struct power_supply, dev)
|
||||
|
||||
extern void *power_supply_get_drvdata(struct power_supply *psy);
|
||||
/* For APM emulation, think legacy userspace. */
|
||||
extern struct class *power_supply_class;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user