Contributors: 28
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Lan Tianyu |
492 |
27.97% |
4 |
8.70% |
| Andy Grover |
308 |
17.51% |
3 |
6.52% |
| Guenter Roeck |
206 |
11.71% |
1 |
2.17% |
| Alexey Y. Starikovskiy |
152 |
8.64% |
2 |
4.35% |
| Hans de Goede |
124 |
7.05% |
2 |
4.35% |
| Rui Zhang |
111 |
6.31% |
3 |
6.52% |
| Alexander Mezin |
104 |
5.91% |
1 |
2.17% |
| Carlo Caione |
60 |
3.41% |
1 |
2.17% |
| Krzysztof Kozlowski |
51 |
2.90% |
2 |
4.35% |
| Patrick Mochel |
49 |
2.79% |
3 |
6.52% |
| Len Brown |
25 |
1.42% |
6 |
13.04% |
| Rafael J. Wysocki |
20 |
1.14% |
2 |
4.35% |
| Langsdorf, Mark |
13 |
0.74% |
1 |
2.17% |
| Pavel Machek |
8 |
0.45% |
1 |
2.17% |
| Shuah Khan |
6 |
0.34% |
1 |
2.17% |
| Christian Lupien |
6 |
0.34% |
1 |
2.17% |
| Thomas Renninger |
5 |
0.28% |
1 |
2.17% |
| Kay Sievers |
4 |
0.23% |
1 |
2.17% |
| Tejun Heo |
3 |
0.17% |
1 |
2.17% |
| Thomas Gleixner |
2 |
0.11% |
1 |
2.17% |
| Andrew Morton |
2 |
0.11% |
1 |
2.17% |
| Christoph Hellwig |
2 |
0.11% |
1 |
2.17% |
| Ognjen Galic |
1 |
0.06% |
1 |
2.17% |
| Matthew Wilcox |
1 |
0.06% |
1 |
2.17% |
| Gustavo A. R. Silva |
1 |
0.06% |
1 |
2.17% |
| Burman Yan |
1 |
0.06% |
1 |
2.17% |
| Lv Zheng |
1 |
0.06% |
1 |
2.17% |
| Mathias Krause |
1 |
0.06% |
1 |
2.17% |
| Total |
1759 |
|
46 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* acpi_ac.c - ACPI AC Adapter Driver ($Revision: 27 $)
*
* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/dmi.h>
#include <linux/delay.h>
#ifdef CONFIG_ACPI_PROCFS_POWER
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#endif
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/acpi.h>
#include <acpi/battery.h>
#define PREFIX "ACPI: "
#define ACPI_AC_CLASS "ac_adapter"
#define ACPI_AC_DEVICE_NAME "AC Adapter"
#define ACPI_AC_FILE_STATE "state"
#define ACPI_AC_NOTIFY_STATUS 0x80
#define ACPI_AC_STATUS_OFFLINE 0x00
#define ACPI_AC_STATUS_ONLINE 0x01
#define ACPI_AC_STATUS_UNKNOWN 0xFF
#define _COMPONENT ACPI_AC_COMPONENT
ACPI_MODULE_NAME("ac");
MODULE_AUTHOR("Paul Diefenbaugh");
MODULE_DESCRIPTION("ACPI AC Adapter Driver");
MODULE_LICENSE("GPL");
static int acpi_ac_add(struct acpi_device *device);
static int acpi_ac_remove(struct acpi_device *device);
static void acpi_ac_notify(struct acpi_device *device, u32 event);
struct acpi_ac_bl {
const char *hid;
int hrv;
};
static const struct acpi_device_id ac_device_ids[] = {
{"ACPI0003", 0},
{"", 0},
};
MODULE_DEVICE_TABLE(acpi, ac_device_ids);
/* Lists of PMIC ACPI HIDs with an (often better) native charger driver */
static const struct acpi_ac_bl acpi_ac_blacklist[] = {
{ "INT33F4", -1 }, /* X-Powers AXP288 PMIC */
{ "INT34D3", 3 }, /* Intel Cherrytrail Whiskey Cove PMIC */
};
#ifdef CONFIG_PM_SLEEP
static int acpi_ac_resume(struct device *dev);
#endif
static SIMPLE_DEV_PM_OPS(acpi_ac_pm, NULL, acpi_ac_resume);
#ifdef CONFIG_ACPI_PROCFS_POWER
extern struct proc_dir_entry *acpi_lock_ac_dir(void);
extern void *acpi_unlock_ac_dir(struct proc_dir_entry *acpi_ac_dir);
#endif
static int ac_sleep_before_get_state_ms;
static int ac_check_pmic = 1;
static struct acpi_driver acpi_ac_driver = {
.name = "ac",
.class = ACPI_AC_CLASS,
.ids = ac_device_ids,
.flags = ACPI_DRIVER_ALL_NOTIFY_EVENTS,
.ops = {
.add = acpi_ac_add,
.remove = acpi_ac_remove,
.notify = acpi_ac_notify,
},
.drv.pm = &acpi_ac_pm,
};
struct acpi_ac {
struct power_supply *charger;
struct power_supply_desc charger_desc;
struct acpi_device * device;
unsigned long long state;
struct notifier_block battery_nb;
};
#define to_acpi_ac(x) power_supply_get_drvdata(x)
/* --------------------------------------------------------------------------
AC Adapter Management
-------------------------------------------------------------------------- */
static int acpi_ac_get_state(struct acpi_ac *ac)
{
acpi_status status = AE_OK;
if (!ac)
return -EINVAL;
status = acpi_evaluate_integer(ac->device->handle, "_PSR", NULL,
&ac->state);
if (ACPI_FAILURE(status)) {
ACPI_EXCEPTION((AE_INFO, status,
"Error reading AC Adapter state"));
ac->state = ACPI_AC_STATUS_UNKNOWN;
return -ENODEV;
}
return 0;
}
/* --------------------------------------------------------------------------
sysfs I/F
-------------------------------------------------------------------------- */
static int get_ac_property(struct power_supply *psy,
enum power_supply_property psp,
union power_supply_propval *val)
{
struct acpi_ac *ac = to_acpi_ac(psy);
if (!ac)
return -ENODEV;
if (acpi_ac_get_state(ac))
return -ENODEV;
switch (psp) {
case POWER_SUPPLY_PROP_ONLINE:
val->intval = ac->state;
break;
default:
return -EINVAL;
}
return 0;
}
static enum power_supply_property ac_props[] = {
POWER_SUPPLY_PROP_ONLINE,
};
#ifdef CONFIG_ACPI_PROCFS_POWER
/* --------------------------------------------------------------------------
FS Interface (/proc)
-------------------------------------------------------------------------- */
static struct proc_dir_entry *acpi_ac_dir;
static int acpi_ac_seq_show(struct seq_file *seq, void *offset)
{
struct acpi_ac *ac = seq->private;
if (!ac)
return 0;
if (acpi_ac_get_state(ac)) {
seq_puts(seq, "ERROR: Unable to read AC Adapter state\n");
return 0;
}
seq_puts(seq, "state: ");
switch (ac->state) {
case ACPI_AC_STATUS_OFFLINE:
seq_puts(seq, "off-line\n");
break;
case ACPI_AC_STATUS_ONLINE:
seq_puts(seq, "on-line\n");
break;
default:
seq_puts(seq, "unknown\n");
break;
}
return 0;
}
static int acpi_ac_add_fs(struct acpi_ac *ac)
{
struct proc_dir_entry *entry = NULL;
printk(KERN_WARNING PREFIX "Deprecated procfs I/F for AC is loaded,"
" please retry with CONFIG_ACPI_PROCFS_POWER cleared\n");
if (!acpi_device_dir(ac->device)) {
acpi_device_dir(ac->device) =
proc_mkdir(acpi_device_bid(ac->device), acpi_ac_dir);
if (!acpi_device_dir(ac->device))
return -ENODEV;
}
/* 'state' [R] */
entry = proc_create_single_data(ACPI_AC_FILE_STATE, S_IRUGO,
acpi_device_dir(ac->device), acpi_ac_seq_show, ac);
if (!entry)
return -ENODEV;
return 0;
}
static int acpi_ac_remove_fs(struct acpi_ac *ac)
{
if (acpi_device_dir(ac->device)) {
remove_proc_entry(ACPI_AC_FILE_STATE,
acpi_device_dir(ac->device));
remove_proc_entry(acpi_device_bid(ac->device), acpi_ac_dir);
acpi_device_dir(ac->device) = NULL;
}
return 0;
}
#endif
/* --------------------------------------------------------------------------
Driver Model
-------------------------------------------------------------------------- */
static void acpi_ac_notify(struct acpi_device *device, u32 event)
{
struct acpi_ac *ac = acpi_driver_data(device);
if (!ac)
return;
switch (event) {
default:
ACPI_DEBUG_PRINT((ACPI_DB_INFO,
"Unsupported event [0x%x]\n", event));
/* fall through */
case ACPI_AC_NOTIFY_STATUS:
case ACPI_NOTIFY_BUS_CHECK:
case ACPI_NOTIFY_DEVICE_CHECK:
/*
* A buggy BIOS may notify AC first and then sleep for
* a specific time before doing actual operations in the
* EC event handler (_Qxx). This will cause the AC state
* reported by the ACPI event to be incorrect, so wait for a
* specific time for the EC event handler to make progress.
*/
if (ac_sleep_before_get_state_ms > 0)
msleep(ac_sleep_before_get_state_ms);
acpi_ac_get_state(ac);
acpi_bus_generate_netlink_event(device->pnp.device_class,
dev_name(&device->dev), event,
(u32) ac->state);
acpi_notifier_call_chain(device, event, (u32) ac->state);
kobject_uevent(&ac->charger->dev.kobj, KOBJ_CHANGE);
}
return;
}
static int acpi_ac_battery_notify(struct notifier_block *nb,
unsigned long action, void *data)
{
struct acpi_ac *ac = container_of(nb, struct acpi_ac, battery_nb);
struct acpi_bus_event *event = (struct acpi_bus_event *)data;
/*
* On HP Pavilion dv6-6179er AC status notifications aren't triggered
* when adapter is plugged/unplugged. However, battery status
* notifcations are triggered when battery starts charging or
* discharging. Re-reading AC status triggers lost AC notifications,
* if AC status has changed.
*/
if (strcmp(event->device_class, ACPI_BATTERY_CLASS) == 0 &&
event->type == ACPI_BATTERY_NOTIFY_STATUS)
acpi_ac_get_state(ac);
return NOTIFY_OK;
}
static int __init thinkpad_e530_quirk(const struct dmi_system_id *d)
{
ac_sleep_before_get_state_ms = 1000;
return 0;
}
static int __init ac_do_not_check_pmic_quirk(const struct dmi_system_id *d)
{
ac_check_pmic = 0;
return 0;
}
/* Please keep this list alphabetically sorted */
static const struct dmi_system_id ac_dmi_table[] __initconst = {
{
/* ECS EF20EA, AXP288 PMIC but uses separate fuel-gauge */
.callback = ac_do_not_check_pmic_quirk,
.matches = {
DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
},
},
{
/* Lenovo Ideapad Miix 320, AXP288 PMIC, separate fuel-gauge */
.callback = ac_do_not_check_pmic_quirk,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_NAME, "80XF"),
DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo MIIX 320-10ICR"),
},
},
{
/* Lenovo Thinkpad e530, see comment in acpi_ac_notify() */
.callback = thinkpad_e530_quirk,
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_NAME, "32597CG"),
},
},
{},
};
static int acpi_ac_add(struct acpi_device *device)
{
struct power_supply_config psy_cfg = {};
int result = 0;
struct acpi_ac *ac = NULL;
if (!device)
return -EINVAL;
ac = kzalloc(sizeof(struct acpi_ac), GFP_KERNEL);
if (!ac)
return -ENOMEM;
ac->device = device;
strcpy(acpi_device_name(device), ACPI_AC_DEVICE_NAME);
strcpy(acpi_device_class(device), ACPI_AC_CLASS);
device->driver_data = ac;
result = acpi_ac_get_state(ac);
if (result)
goto end;
psy_cfg.drv_data = ac;
ac->charger_desc.name = acpi_device_bid(device);
#ifdef CONFIG_ACPI_PROCFS_POWER
result = acpi_ac_add_fs(ac);
if (result)
goto end;
#endif
ac->charger_desc.type = POWER_SUPPLY_TYPE_MAINS;
ac->charger_desc.properties = ac_props;
ac->charger_desc.num_properties = ARRAY_SIZE(ac_props);
ac->charger_desc.get_property = get_ac_property;
ac->charger = power_supply_register(&ac->device->dev,
&ac->charger_desc, &psy_cfg);
if (IS_ERR(ac->charger)) {
result = PTR_ERR(ac->charger);
goto end;
}
printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
acpi_device_name(device), acpi_device_bid(device),
ac->state ? "on-line" : "off-line");
ac->battery_nb.notifier_call = acpi_ac_battery_notify;
register_acpi_notifier(&ac->battery_nb);
end:
if (result) {
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_ac_remove_fs(ac);
#endif
kfree(ac);
}
return result;
}
#ifdef CONFIG_PM_SLEEP
static int acpi_ac_resume(struct device *dev)
{
struct acpi_ac *ac;
unsigned old_state;
if (!dev)
return -EINVAL;
ac = acpi_driver_data(to_acpi_device(dev));
if (!ac)
return -EINVAL;
old_state = ac->state;
if (acpi_ac_get_state(ac))
return 0;
if (old_state != ac->state)
kobject_uevent(&ac->charger->dev.kobj, KOBJ_CHANGE);
return 0;
}
#else
#define acpi_ac_resume NULL
#endif
static int acpi_ac_remove(struct acpi_device *device)
{
struct acpi_ac *ac = NULL;
if (!device || !acpi_driver_data(device))
return -EINVAL;
ac = acpi_driver_data(device);
power_supply_unregister(ac->charger);
unregister_acpi_notifier(&ac->battery_nb);
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_ac_remove_fs(ac);
#endif
kfree(ac);
return 0;
}
static int __init acpi_ac_init(void)
{
unsigned int i;
int result;
if (acpi_disabled)
return -ENODEV;
dmi_check_system(ac_dmi_table);
if (ac_check_pmic) {
for (i = 0; i < ARRAY_SIZE(acpi_ac_blacklist); i++)
if (acpi_dev_present(acpi_ac_blacklist[i].hid, "1",
acpi_ac_blacklist[i].hrv)) {
pr_info(PREFIX "AC: found native %s PMIC, not loading\n",
acpi_ac_blacklist[i].hid);
return -ENODEV;
}
}
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_ac_dir = acpi_lock_ac_dir();
if (!acpi_ac_dir)
return -ENODEV;
#endif
result = acpi_bus_register_driver(&acpi_ac_driver);
if (result < 0) {
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_unlock_ac_dir(acpi_ac_dir);
#endif
return -ENODEV;
}
return 0;
}
static void __exit acpi_ac_exit(void)
{
acpi_bus_unregister_driver(&acpi_ac_driver);
#ifdef CONFIG_ACPI_PROCFS_POWER
acpi_unlock_ac_dir(acpi_ac_dir);
#endif
}
module_init(acpi_ac_init);
module_exit(acpi_ac_exit);