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Let GK45 not go into BIOS for determining the AC power state. The BIOS wrongly returns 0, so hardcode the power state to 1. The mini PC GK45 by Besstar Tech Lld. (aka Kodlix) just runs off AC. It does not include any batteries. Nevertheless BIOS reports AC off: root@kodlix:/usr/src/linux# cat /sys/class/power_supply/ADP1/online 0 root@kodlix:/usr/src/linux# modprobe acpi_dbg root@kodlix:/usr/src/linux# tools/power/acpi/acpidbg - find _PSR \_SB.PCI0.SBRG.H_EC.ADP1._PSR Method 000000009283cee8 001 Args 0 Len 001C Aml 00000000f54e5f67 - execute \_SB.PCI0.SBRG.H_EC.ADP1._PSR Evaluating \_SB.PCI0.SBRG.H_EC.ADP1._PSR Evaluation of \_SB.PCI0.SBRG.H_EC.ADP1._PSR returned object 00000000dc08c187, external buffer length 18 [Integer] = 0000000000000000 that should be [Integer] = 0000000000000001 Signed-off-by: Stefan Schaeckeler <schaecsn@gmx.net> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
375 lines
8.6 KiB
C
375 lines
8.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* acpi_ac.c - ACPI AC Adapter Driver (Revision: 27)
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*
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* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
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* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
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*/
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#define pr_fmt(fmt) "ACPI: AC: " fmt
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/dmi.h>
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#include <linux/delay.h>
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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 <acpi/battery.h>
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#define ACPI_AC_CLASS "ac_adapter"
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#define ACPI_AC_DEVICE_NAME "AC Adapter"
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#define ACPI_AC_FILE_STATE "state"
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#define ACPI_AC_NOTIFY_STATUS 0x80
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#define ACPI_AC_STATUS_OFFLINE 0x00
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#define ACPI_AC_STATUS_ONLINE 0x01
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#define ACPI_AC_STATUS_UNKNOWN 0xFF
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MODULE_AUTHOR("Paul Diefenbaugh");
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MODULE_DESCRIPTION("ACPI AC Adapter Driver");
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MODULE_LICENSE("GPL");
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static int acpi_ac_add(struct acpi_device *device);
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static int acpi_ac_remove(struct acpi_device *device);
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static void acpi_ac_notify(struct acpi_device *device, u32 event);
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struct acpi_ac_bl {
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const char *hid;
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int hrv;
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};
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static const struct acpi_device_id ac_device_ids[] = {
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{"ACPI0003", 0},
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{"", 0},
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};
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MODULE_DEVICE_TABLE(acpi, ac_device_ids);
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/* Lists of PMIC ACPI HIDs with an (often better) native charger driver */
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static const struct acpi_ac_bl acpi_ac_blacklist[] = {
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{ "INT33F4", -1 }, /* X-Powers AXP288 PMIC */
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{ "INT34D3", 3 }, /* Intel Cherrytrail Whiskey Cove PMIC */
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};
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#ifdef CONFIG_PM_SLEEP
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static int acpi_ac_resume(struct device *dev);
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#endif
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static SIMPLE_DEV_PM_OPS(acpi_ac_pm, NULL, acpi_ac_resume);
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static int ac_sleep_before_get_state_ms;
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static int ac_check_pmic = 1;
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static int ac_only;
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static struct acpi_driver acpi_ac_driver = {
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.name = "ac",
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.class = ACPI_AC_CLASS,
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.ids = ac_device_ids,
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.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
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.ops = {
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.add = acpi_ac_add,
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.remove = acpi_ac_remove,
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.notify = acpi_ac_notify,
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},
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.drv.pm = &acpi_ac_pm,
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};
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struct acpi_ac {
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struct power_supply *charger;
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struct power_supply_desc charger_desc;
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struct acpi_device *device;
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unsigned long long state;
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struct notifier_block battery_nb;
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};
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#define to_acpi_ac(x) power_supply_get_drvdata(x)
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/* AC Adapter Management */
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static int acpi_ac_get_state(struct acpi_ac *ac)
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{
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acpi_status status = AE_OK;
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if (!ac)
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return -EINVAL;
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if (ac_only) {
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ac->state = 1;
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return 0;
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}
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status = acpi_evaluate_integer(ac->device->handle, "_PSR", NULL,
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&ac->state);
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if (ACPI_FAILURE(status)) {
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acpi_handle_info(ac->device->handle,
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"Error reading AC Adapter state: %s\n",
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acpi_format_exception(status));
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ac->state = ACPI_AC_STATUS_UNKNOWN;
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return -ENODEV;
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}
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return 0;
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}
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/* sysfs I/F */
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static int get_ac_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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{
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struct acpi_ac *ac = to_acpi_ac(psy);
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if (!ac)
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return -ENODEV;
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if (acpi_ac_get_state(ac))
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return -ENODEV;
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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val->intval = ac->state;
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break;
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default:
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return -EINVAL;
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}
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return 0;
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}
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static enum power_supply_property ac_props[] = {
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POWER_SUPPLY_PROP_ONLINE,
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};
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/* Driver Model */
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static void acpi_ac_notify(struct acpi_device *device, u32 event)
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{
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struct acpi_ac *ac = acpi_driver_data(device);
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if (!ac)
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return;
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switch (event) {
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default:
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acpi_handle_debug(device->handle, "Unsupported event [0x%x]\n",
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event);
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fallthrough;
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case ACPI_AC_NOTIFY_STATUS:
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case ACPI_NOTIFY_BUS_CHECK:
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case ACPI_NOTIFY_DEVICE_CHECK:
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/*
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* A buggy BIOS may notify AC first and then sleep for
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* a specific time before doing actual operations in the
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* EC event handler (_Qxx). This will cause the AC state
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* reported by the ACPI event to be incorrect, so wait for a
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* specific time for the EC event handler to make progress.
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*/
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if (ac_sleep_before_get_state_ms > 0)
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msleep(ac_sleep_before_get_state_ms);
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acpi_ac_get_state(ac);
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acpi_bus_generate_netlink_event(device->pnp.device_class,
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dev_name(&device->dev), event,
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(u32) ac->state);
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acpi_notifier_call_chain(device, event, (u32) ac->state);
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kobject_uevent(&ac->charger->dev.kobj, KOBJ_CHANGE);
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}
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}
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static int acpi_ac_battery_notify(struct notifier_block *nb,
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unsigned long action, void *data)
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{
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struct acpi_ac *ac = container_of(nb, struct acpi_ac, battery_nb);
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struct acpi_bus_event *event = (struct acpi_bus_event *)data;
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/*
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* On HP Pavilion dv6-6179er AC status notifications aren't triggered
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* when adapter is plugged/unplugged. However, battery status
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* notifications are triggered when battery starts charging or
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* discharging. Re-reading AC status triggers lost AC notifications,
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* if AC status has changed.
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*/
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if (strcmp(event->device_class, ACPI_BATTERY_CLASS) == 0 &&
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event->type == ACPI_BATTERY_NOTIFY_STATUS)
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acpi_ac_get_state(ac);
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return NOTIFY_OK;
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}
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static int __init thinkpad_e530_quirk(const struct dmi_system_id *d)
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{
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ac_sleep_before_get_state_ms = 1000;
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return 0;
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}
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static int __init ac_do_not_check_pmic_quirk(const struct dmi_system_id *d)
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{
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ac_check_pmic = 0;
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return 0;
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}
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static int __init ac_only_quirk(const struct dmi_system_id *d)
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{
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ac_only = 1;
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return 0;
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}
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/* Please keep this list alphabetically sorted */
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static const struct dmi_system_id ac_dmi_table[] __initconst = {
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{
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/* ECS EF20EA, AXP288 PMIC but uses separate fuel-gauge */
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.callback = ac_do_not_check_pmic_quirk,
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.matches = {
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DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
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},
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},
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{
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/* Kodlix GK45 returning incorrect state */
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.callback = ac_only_quirk,
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.matches = {
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DMI_MATCH(DMI_PRODUCT_NAME, "GK45"),
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},
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},
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{
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/* Lenovo Ideapad Miix 320, AXP288 PMIC, separate fuel-gauge */
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.callback = ac_do_not_check_pmic_quirk,
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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DMI_MATCH(DMI_PRODUCT_NAME, "80XF"),
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DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
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},
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},
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{
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/* Lenovo Thinkpad e530, see comment in acpi_ac_notify() */
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.callback = thinkpad_e530_quirk,
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.matches = {
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DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
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DMI_MATCH(DMI_PRODUCT_NAME, "32597CG"),
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},
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},
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{},
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};
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static int acpi_ac_add(struct acpi_device *device)
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{
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struct power_supply_config psy_cfg = {};
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int result = 0;
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struct acpi_ac *ac = NULL;
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if (!device)
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return -EINVAL;
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ac = kzalloc(sizeof(struct acpi_ac), GFP_KERNEL);
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if (!ac)
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return -ENOMEM;
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ac->device = device;
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strcpy(acpi_device_name(device), ACPI_AC_DEVICE_NAME);
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strcpy(acpi_device_class(device), ACPI_AC_CLASS);
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device->driver_data = ac;
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result = acpi_ac_get_state(ac);
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if (result)
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goto end;
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psy_cfg.drv_data = ac;
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ac->charger_desc.name = acpi_device_bid(device);
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ac->charger_desc.type = POWER_SUPPLY_TYPE_MAINS;
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ac->charger_desc.properties = ac_props;
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ac->charger_desc.num_properties = ARRAY_SIZE(ac_props);
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ac->charger_desc.get_property = get_ac_property;
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ac->charger = power_supply_register(&ac->device->dev,
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&ac->charger_desc, &psy_cfg);
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if (IS_ERR(ac->charger)) {
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result = PTR_ERR(ac->charger);
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goto end;
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}
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pr_info("%s [%s] (%s)\n", acpi_device_name(device),
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acpi_device_bid(device), ac->state ? "on-line" : "off-line");
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ac->battery_nb.notifier_call = acpi_ac_battery_notify;
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register_acpi_notifier(&ac->battery_nb);
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end:
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if (result)
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kfree(ac);
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return result;
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}
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#ifdef CONFIG_PM_SLEEP
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static int acpi_ac_resume(struct device *dev)
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{
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struct acpi_ac *ac;
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unsigned int old_state;
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if (!dev)
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return -EINVAL;
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ac = acpi_driver_data(to_acpi_device(dev));
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if (!ac)
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return -EINVAL;
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old_state = ac->state;
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if (acpi_ac_get_state(ac))
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return 0;
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if (old_state != ac->state)
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kobject_uevent(&ac->charger->dev.kobj, KOBJ_CHANGE);
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return 0;
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}
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#else
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#define acpi_ac_resume NULL
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#endif
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static int acpi_ac_remove(struct acpi_device *device)
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{
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struct acpi_ac *ac = NULL;
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if (!device || !acpi_driver_data(device))
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return -EINVAL;
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ac = acpi_driver_data(device);
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power_supply_unregister(ac->charger);
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unregister_acpi_notifier(&ac->battery_nb);
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kfree(ac);
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return 0;
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}
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static int __init acpi_ac_init(void)
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{
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unsigned int i;
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int result;
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if (acpi_disabled)
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return -ENODEV;
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dmi_check_system(ac_dmi_table);
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if (ac_check_pmic) {
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for (i = 0; i < ARRAY_SIZE(acpi_ac_blacklist); i++)
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if (acpi_dev_present(acpi_ac_blacklist[i].hid, "1",
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acpi_ac_blacklist[i].hrv)) {
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pr_info("found native %s PMIC, not loading\n",
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acpi_ac_blacklist[i].hid);
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return -ENODEV;
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}
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}
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result = acpi_bus_register_driver(&acpi_ac_driver);
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if (result < 0)
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return -ENODEV;
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return 0;
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}
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static void __exit acpi_ac_exit(void)
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{
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acpi_bus_unregister_driver(&acpi_ac_driver);
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}
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module_init(acpi_ac_init);
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module_exit(acpi_ac_exit);
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