mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 02:23:16 +00:00
23680f0b7d
The dev_uevent() in struct class should not be modifying the device that is passed into it, so mark it as a const * and propagate the function signature changes out into all relevant subsystems that use this callback. Cc: Jens Axboe <axboe@kernel.dk> Cc: Luis Chamberlain <mcgrof@kernel.org> Cc: Russ Weight <russell.h.weight@intel.com> Cc: Jean Delvare <jdelvare@suse.com> Cc: Johan Hovold <johan@kernel.org> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: Leon Romanovsky <leon@kernel.org> Cc: Karsten Keil <isdn@linux-pingi.de> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: Keith Busch <kbusch@kernel.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Sagi Grimberg <sagi@grimberg.me> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: "David S. Miller" <davem@davemloft.net> Cc: Eric Dumazet <edumazet@google.com> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Paolo Abeni <pabeni@redhat.com> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Wolfram Sang <wsa+renesas@sang-engineering.com> Cc: Raed Salem <raeds@nvidia.com> Cc: Chen Zhongjin <chenzhongjin@huawei.com> Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Avihai Horon <avihaih@nvidia.com> Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Colin Ian King <colin.i.king@gmail.com> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Jakob Koschel <jakobkoschel@gmail.com> Cc: Antoine Tenart <atenart@kernel.org> Cc: Frederic Weisbecker <frederic@kernel.org> Cc: Wang Yufen <wangyufen@huawei.com> Cc: linux-block@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-media@vger.kernel.org Cc: linux-nvme@lists.infradead.org Cc: linux-pm@vger.kernel.org Cc: linux-rdma@vger.kernel.org Cc: linux-usb@vger.kernel.org Cc: linux-wireless@vger.kernel.org Cc: netdev@vger.kernel.org Acked-by: Sebastian Reichel <sre@kernel.org> Acked-by: Rafael J. Wysocki <rafael@kernel.org> Link: https://lore.kernel.org/r/20221123122523.1332370-1-gregkh@linuxfoundation.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
545 lines
15 KiB
C
545 lines
15 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Sysfs interface for the universal power supply monitor class
|
|
*
|
|
* Copyright © 2007 David Woodhouse <dwmw2@infradead.org>
|
|
* Copyright © 2007 Anton Vorontsov <cbou@mail.ru>
|
|
* Copyright © 2004 Szabolcs Gyurko
|
|
* Copyright © 2003 Ian Molton <spyro@f2s.com>
|
|
*
|
|
* Modified: 2004, Oct Szabolcs Gyurko
|
|
*/
|
|
|
|
#include <linux/ctype.h>
|
|
#include <linux/device.h>
|
|
#include <linux/power_supply.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/stat.h>
|
|
|
|
#include "power_supply.h"
|
|
|
|
#define MAX_PROP_NAME_LEN 30
|
|
|
|
struct power_supply_attr {
|
|
const char *prop_name;
|
|
char attr_name[MAX_PROP_NAME_LEN + 1];
|
|
struct device_attribute dev_attr;
|
|
const char * const *text_values;
|
|
int text_values_len;
|
|
};
|
|
|
|
#define _POWER_SUPPLY_ATTR(_name, _text, _len) \
|
|
[POWER_SUPPLY_PROP_ ## _name] = \
|
|
{ \
|
|
.prop_name = #_name, \
|
|
.attr_name = #_name "\0", \
|
|
.text_values = _text, \
|
|
.text_values_len = _len, \
|
|
}
|
|
|
|
#define POWER_SUPPLY_ATTR(_name) _POWER_SUPPLY_ATTR(_name, NULL, 0)
|
|
#define _POWER_SUPPLY_ENUM_ATTR(_name, _text) \
|
|
_POWER_SUPPLY_ATTR(_name, _text, ARRAY_SIZE(_text))
|
|
#define POWER_SUPPLY_ENUM_ATTR(_name) \
|
|
_POWER_SUPPLY_ENUM_ATTR(_name, POWER_SUPPLY_ ## _name ## _TEXT)
|
|
|
|
static const char * const POWER_SUPPLY_TYPE_TEXT[] = {
|
|
[POWER_SUPPLY_TYPE_UNKNOWN] = "Unknown",
|
|
[POWER_SUPPLY_TYPE_BATTERY] = "Battery",
|
|
[POWER_SUPPLY_TYPE_UPS] = "UPS",
|
|
[POWER_SUPPLY_TYPE_MAINS] = "Mains",
|
|
[POWER_SUPPLY_TYPE_USB] = "USB",
|
|
[POWER_SUPPLY_TYPE_USB_DCP] = "USB_DCP",
|
|
[POWER_SUPPLY_TYPE_USB_CDP] = "USB_CDP",
|
|
[POWER_SUPPLY_TYPE_USB_ACA] = "USB_ACA",
|
|
[POWER_SUPPLY_TYPE_USB_TYPE_C] = "USB_C",
|
|
[POWER_SUPPLY_TYPE_USB_PD] = "USB_PD",
|
|
[POWER_SUPPLY_TYPE_USB_PD_DRP] = "USB_PD_DRP",
|
|
[POWER_SUPPLY_TYPE_APPLE_BRICK_ID] = "BrickID",
|
|
[POWER_SUPPLY_TYPE_WIRELESS] = "Wireless",
|
|
};
|
|
|
|
static const char * const POWER_SUPPLY_USB_TYPE_TEXT[] = {
|
|
[POWER_SUPPLY_USB_TYPE_UNKNOWN] = "Unknown",
|
|
[POWER_SUPPLY_USB_TYPE_SDP] = "SDP",
|
|
[POWER_SUPPLY_USB_TYPE_DCP] = "DCP",
|
|
[POWER_SUPPLY_USB_TYPE_CDP] = "CDP",
|
|
[POWER_SUPPLY_USB_TYPE_ACA] = "ACA",
|
|
[POWER_SUPPLY_USB_TYPE_C] = "C",
|
|
[POWER_SUPPLY_USB_TYPE_PD] = "PD",
|
|
[POWER_SUPPLY_USB_TYPE_PD_DRP] = "PD_DRP",
|
|
[POWER_SUPPLY_USB_TYPE_PD_PPS] = "PD_PPS",
|
|
[POWER_SUPPLY_USB_TYPE_APPLE_BRICK_ID] = "BrickID",
|
|
};
|
|
|
|
static const char * const POWER_SUPPLY_STATUS_TEXT[] = {
|
|
[POWER_SUPPLY_STATUS_UNKNOWN] = "Unknown",
|
|
[POWER_SUPPLY_STATUS_CHARGING] = "Charging",
|
|
[POWER_SUPPLY_STATUS_DISCHARGING] = "Discharging",
|
|
[POWER_SUPPLY_STATUS_NOT_CHARGING] = "Not charging",
|
|
[POWER_SUPPLY_STATUS_FULL] = "Full",
|
|
};
|
|
|
|
static const char * const POWER_SUPPLY_CHARGE_TYPE_TEXT[] = {
|
|
[POWER_SUPPLY_CHARGE_TYPE_UNKNOWN] = "Unknown",
|
|
[POWER_SUPPLY_CHARGE_TYPE_NONE] = "N/A",
|
|
[POWER_SUPPLY_CHARGE_TYPE_TRICKLE] = "Trickle",
|
|
[POWER_SUPPLY_CHARGE_TYPE_FAST] = "Fast",
|
|
[POWER_SUPPLY_CHARGE_TYPE_STANDARD] = "Standard",
|
|
[POWER_SUPPLY_CHARGE_TYPE_ADAPTIVE] = "Adaptive",
|
|
[POWER_SUPPLY_CHARGE_TYPE_CUSTOM] = "Custom",
|
|
[POWER_SUPPLY_CHARGE_TYPE_LONGLIFE] = "Long Life",
|
|
[POWER_SUPPLY_CHARGE_TYPE_BYPASS] = "Bypass",
|
|
};
|
|
|
|
static const char * const POWER_SUPPLY_HEALTH_TEXT[] = {
|
|
[POWER_SUPPLY_HEALTH_UNKNOWN] = "Unknown",
|
|
[POWER_SUPPLY_HEALTH_GOOD] = "Good",
|
|
[POWER_SUPPLY_HEALTH_OVERHEAT] = "Overheat",
|
|
[POWER_SUPPLY_HEALTH_DEAD] = "Dead",
|
|
[POWER_SUPPLY_HEALTH_OVERVOLTAGE] = "Over voltage",
|
|
[POWER_SUPPLY_HEALTH_UNSPEC_FAILURE] = "Unspecified failure",
|
|
[POWER_SUPPLY_HEALTH_COLD] = "Cold",
|
|
[POWER_SUPPLY_HEALTH_WATCHDOG_TIMER_EXPIRE] = "Watchdog timer expire",
|
|
[POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE] = "Safety timer expire",
|
|
[POWER_SUPPLY_HEALTH_OVERCURRENT] = "Over current",
|
|
[POWER_SUPPLY_HEALTH_CALIBRATION_REQUIRED] = "Calibration required",
|
|
[POWER_SUPPLY_HEALTH_WARM] = "Warm",
|
|
[POWER_SUPPLY_HEALTH_COOL] = "Cool",
|
|
[POWER_SUPPLY_HEALTH_HOT] = "Hot",
|
|
[POWER_SUPPLY_HEALTH_NO_BATTERY] = "No battery",
|
|
};
|
|
|
|
static const char * const POWER_SUPPLY_TECHNOLOGY_TEXT[] = {
|
|
[POWER_SUPPLY_TECHNOLOGY_UNKNOWN] = "Unknown",
|
|
[POWER_SUPPLY_TECHNOLOGY_NiMH] = "NiMH",
|
|
[POWER_SUPPLY_TECHNOLOGY_LION] = "Li-ion",
|
|
[POWER_SUPPLY_TECHNOLOGY_LIPO] = "Li-poly",
|
|
[POWER_SUPPLY_TECHNOLOGY_LiFe] = "LiFe",
|
|
[POWER_SUPPLY_TECHNOLOGY_NiCd] = "NiCd",
|
|
[POWER_SUPPLY_TECHNOLOGY_LiMn] = "LiMn",
|
|
};
|
|
|
|
static const char * const POWER_SUPPLY_CAPACITY_LEVEL_TEXT[] = {
|
|
[POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN] = "Unknown",
|
|
[POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL] = "Critical",
|
|
[POWER_SUPPLY_CAPACITY_LEVEL_LOW] = "Low",
|
|
[POWER_SUPPLY_CAPACITY_LEVEL_NORMAL] = "Normal",
|
|
[POWER_SUPPLY_CAPACITY_LEVEL_HIGH] = "High",
|
|
[POWER_SUPPLY_CAPACITY_LEVEL_FULL] = "Full",
|
|
};
|
|
|
|
static const char * const POWER_SUPPLY_SCOPE_TEXT[] = {
|
|
[POWER_SUPPLY_SCOPE_UNKNOWN] = "Unknown",
|
|
[POWER_SUPPLY_SCOPE_SYSTEM] = "System",
|
|
[POWER_SUPPLY_SCOPE_DEVICE] = "Device",
|
|
};
|
|
|
|
static const char * const POWER_SUPPLY_CHARGE_BEHAVIOUR_TEXT[] = {
|
|
[POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO] = "auto",
|
|
[POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE] = "inhibit-charge",
|
|
[POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE] = "force-discharge",
|
|
};
|
|
|
|
static struct power_supply_attr power_supply_attrs[] = {
|
|
/* Properties of type `int' */
|
|
POWER_SUPPLY_ENUM_ATTR(STATUS),
|
|
POWER_SUPPLY_ENUM_ATTR(CHARGE_TYPE),
|
|
POWER_SUPPLY_ENUM_ATTR(HEALTH),
|
|
POWER_SUPPLY_ATTR(PRESENT),
|
|
POWER_SUPPLY_ATTR(ONLINE),
|
|
POWER_SUPPLY_ATTR(AUTHENTIC),
|
|
POWER_SUPPLY_ENUM_ATTR(TECHNOLOGY),
|
|
POWER_SUPPLY_ATTR(CYCLE_COUNT),
|
|
POWER_SUPPLY_ATTR(VOLTAGE_MAX),
|
|
POWER_SUPPLY_ATTR(VOLTAGE_MIN),
|
|
POWER_SUPPLY_ATTR(VOLTAGE_MAX_DESIGN),
|
|
POWER_SUPPLY_ATTR(VOLTAGE_MIN_DESIGN),
|
|
POWER_SUPPLY_ATTR(VOLTAGE_NOW),
|
|
POWER_SUPPLY_ATTR(VOLTAGE_AVG),
|
|
POWER_SUPPLY_ATTR(VOLTAGE_OCV),
|
|
POWER_SUPPLY_ATTR(VOLTAGE_BOOT),
|
|
POWER_SUPPLY_ATTR(CURRENT_MAX),
|
|
POWER_SUPPLY_ATTR(CURRENT_NOW),
|
|
POWER_SUPPLY_ATTR(CURRENT_AVG),
|
|
POWER_SUPPLY_ATTR(CURRENT_BOOT),
|
|
POWER_SUPPLY_ATTR(POWER_NOW),
|
|
POWER_SUPPLY_ATTR(POWER_AVG),
|
|
POWER_SUPPLY_ATTR(CHARGE_FULL_DESIGN),
|
|
POWER_SUPPLY_ATTR(CHARGE_EMPTY_DESIGN),
|
|
POWER_SUPPLY_ATTR(CHARGE_FULL),
|
|
POWER_SUPPLY_ATTR(CHARGE_EMPTY),
|
|
POWER_SUPPLY_ATTR(CHARGE_NOW),
|
|
POWER_SUPPLY_ATTR(CHARGE_AVG),
|
|
POWER_SUPPLY_ATTR(CHARGE_COUNTER),
|
|
POWER_SUPPLY_ATTR(CONSTANT_CHARGE_CURRENT),
|
|
POWER_SUPPLY_ATTR(CONSTANT_CHARGE_CURRENT_MAX),
|
|
POWER_SUPPLY_ATTR(CONSTANT_CHARGE_VOLTAGE),
|
|
POWER_SUPPLY_ATTR(CONSTANT_CHARGE_VOLTAGE_MAX),
|
|
POWER_SUPPLY_ATTR(CHARGE_CONTROL_LIMIT),
|
|
POWER_SUPPLY_ATTR(CHARGE_CONTROL_LIMIT_MAX),
|
|
POWER_SUPPLY_ATTR(CHARGE_CONTROL_START_THRESHOLD),
|
|
POWER_SUPPLY_ATTR(CHARGE_CONTROL_END_THRESHOLD),
|
|
POWER_SUPPLY_ENUM_ATTR(CHARGE_BEHAVIOUR),
|
|
POWER_SUPPLY_ATTR(INPUT_CURRENT_LIMIT),
|
|
POWER_SUPPLY_ATTR(INPUT_VOLTAGE_LIMIT),
|
|
POWER_SUPPLY_ATTR(INPUT_POWER_LIMIT),
|
|
POWER_SUPPLY_ATTR(ENERGY_FULL_DESIGN),
|
|
POWER_SUPPLY_ATTR(ENERGY_EMPTY_DESIGN),
|
|
POWER_SUPPLY_ATTR(ENERGY_FULL),
|
|
POWER_SUPPLY_ATTR(ENERGY_EMPTY),
|
|
POWER_SUPPLY_ATTR(ENERGY_NOW),
|
|
POWER_SUPPLY_ATTR(ENERGY_AVG),
|
|
POWER_SUPPLY_ATTR(CAPACITY),
|
|
POWER_SUPPLY_ATTR(CAPACITY_ALERT_MIN),
|
|
POWER_SUPPLY_ATTR(CAPACITY_ALERT_MAX),
|
|
POWER_SUPPLY_ATTR(CAPACITY_ERROR_MARGIN),
|
|
POWER_SUPPLY_ENUM_ATTR(CAPACITY_LEVEL),
|
|
POWER_SUPPLY_ATTR(TEMP),
|
|
POWER_SUPPLY_ATTR(TEMP_MAX),
|
|
POWER_SUPPLY_ATTR(TEMP_MIN),
|
|
POWER_SUPPLY_ATTR(TEMP_ALERT_MIN),
|
|
POWER_SUPPLY_ATTR(TEMP_ALERT_MAX),
|
|
POWER_SUPPLY_ATTR(TEMP_AMBIENT),
|
|
POWER_SUPPLY_ATTR(TEMP_AMBIENT_ALERT_MIN),
|
|
POWER_SUPPLY_ATTR(TEMP_AMBIENT_ALERT_MAX),
|
|
POWER_SUPPLY_ATTR(TIME_TO_EMPTY_NOW),
|
|
POWER_SUPPLY_ATTR(TIME_TO_EMPTY_AVG),
|
|
POWER_SUPPLY_ATTR(TIME_TO_FULL_NOW),
|
|
POWER_SUPPLY_ATTR(TIME_TO_FULL_AVG),
|
|
POWER_SUPPLY_ENUM_ATTR(TYPE),
|
|
POWER_SUPPLY_ATTR(USB_TYPE),
|
|
POWER_SUPPLY_ENUM_ATTR(SCOPE),
|
|
POWER_SUPPLY_ATTR(PRECHARGE_CURRENT),
|
|
POWER_SUPPLY_ATTR(CHARGE_TERM_CURRENT),
|
|
POWER_SUPPLY_ATTR(CALIBRATE),
|
|
POWER_SUPPLY_ATTR(MANUFACTURE_YEAR),
|
|
POWER_SUPPLY_ATTR(MANUFACTURE_MONTH),
|
|
POWER_SUPPLY_ATTR(MANUFACTURE_DAY),
|
|
/* Properties of type `const char *' */
|
|
POWER_SUPPLY_ATTR(MODEL_NAME),
|
|
POWER_SUPPLY_ATTR(MANUFACTURER),
|
|
POWER_SUPPLY_ATTR(SERIAL_NUMBER),
|
|
};
|
|
|
|
static struct attribute *
|
|
__power_supply_attrs[ARRAY_SIZE(power_supply_attrs) + 1];
|
|
|
|
static struct power_supply_attr *to_ps_attr(struct device_attribute *attr)
|
|
{
|
|
return container_of(attr, struct power_supply_attr, dev_attr);
|
|
}
|
|
|
|
static enum power_supply_property dev_attr_psp(struct device_attribute *attr)
|
|
{
|
|
return to_ps_attr(attr) - power_supply_attrs;
|
|
}
|
|
|
|
static ssize_t power_supply_show_usb_type(struct device *dev,
|
|
const struct power_supply_desc *desc,
|
|
union power_supply_propval *value,
|
|
char *buf)
|
|
{
|
|
enum power_supply_usb_type usb_type;
|
|
ssize_t count = 0;
|
|
bool match = false;
|
|
int i;
|
|
|
|
for (i = 0; i < desc->num_usb_types; ++i) {
|
|
usb_type = desc->usb_types[i];
|
|
|
|
if (value->intval == usb_type) {
|
|
count += sprintf(buf + count, "[%s] ",
|
|
POWER_SUPPLY_USB_TYPE_TEXT[usb_type]);
|
|
match = true;
|
|
} else {
|
|
count += sprintf(buf + count, "%s ",
|
|
POWER_SUPPLY_USB_TYPE_TEXT[usb_type]);
|
|
}
|
|
}
|
|
|
|
if (!match) {
|
|
dev_warn(dev, "driver reporting unsupported connected type\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (count)
|
|
buf[count - 1] = '\n';
|
|
|
|
return count;
|
|
}
|
|
|
|
static ssize_t power_supply_show_property(struct device *dev,
|
|
struct device_attribute *attr,
|
|
char *buf) {
|
|
ssize_t ret;
|
|
struct power_supply *psy = dev_get_drvdata(dev);
|
|
struct power_supply_attr *ps_attr = to_ps_attr(attr);
|
|
enum power_supply_property psp = dev_attr_psp(attr);
|
|
union power_supply_propval value;
|
|
|
|
if (psp == POWER_SUPPLY_PROP_TYPE) {
|
|
value.intval = psy->desc->type;
|
|
} else {
|
|
ret = power_supply_get_property(psy, psp, &value);
|
|
|
|
if (ret < 0) {
|
|
if (ret == -ENODATA)
|
|
dev_dbg(dev, "driver has no data for `%s' property\n",
|
|
attr->attr.name);
|
|
else if (ret != -ENODEV && ret != -EAGAIN)
|
|
dev_err_ratelimited(dev,
|
|
"driver failed to report `%s' property: %zd\n",
|
|
attr->attr.name, ret);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
if (ps_attr->text_values_len > 0 &&
|
|
value.intval < ps_attr->text_values_len && value.intval >= 0) {
|
|
return sprintf(buf, "%s\n", ps_attr->text_values[value.intval]);
|
|
}
|
|
|
|
switch (psp) {
|
|
case POWER_SUPPLY_PROP_USB_TYPE:
|
|
ret = power_supply_show_usb_type(dev, psy->desc,
|
|
&value, buf);
|
|
break;
|
|
case POWER_SUPPLY_PROP_MODEL_NAME ... POWER_SUPPLY_PROP_SERIAL_NUMBER:
|
|
ret = sprintf(buf, "%s\n", value.strval);
|
|
break;
|
|
default:
|
|
ret = sprintf(buf, "%d\n", value.intval);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static ssize_t power_supply_store_property(struct device *dev,
|
|
struct device_attribute *attr,
|
|
const char *buf, size_t count) {
|
|
ssize_t ret;
|
|
struct power_supply *psy = dev_get_drvdata(dev);
|
|
struct power_supply_attr *ps_attr = to_ps_attr(attr);
|
|
enum power_supply_property psp = dev_attr_psp(attr);
|
|
union power_supply_propval value;
|
|
|
|
ret = -EINVAL;
|
|
if (ps_attr->text_values_len > 0) {
|
|
ret = __sysfs_match_string(ps_attr->text_values,
|
|
ps_attr->text_values_len, buf);
|
|
}
|
|
|
|
/*
|
|
* If no match was found, then check to see if it is an integer.
|
|
* Integer values are valid for enums in addition to the text value.
|
|
*/
|
|
if (ret < 0) {
|
|
long long_val;
|
|
|
|
ret = kstrtol(buf, 10, &long_val);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
ret = long_val;
|
|
}
|
|
|
|
value.intval = ret;
|
|
|
|
ret = power_supply_set_property(psy, psp, &value);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
return count;
|
|
}
|
|
|
|
static umode_t power_supply_attr_is_visible(struct kobject *kobj,
|
|
struct attribute *attr,
|
|
int attrno)
|
|
{
|
|
struct device *dev = kobj_to_dev(kobj);
|
|
struct power_supply *psy = dev_get_drvdata(dev);
|
|
umode_t mode = S_IRUSR | S_IRGRP | S_IROTH;
|
|
int i;
|
|
|
|
if (!power_supply_attrs[attrno].prop_name)
|
|
return 0;
|
|
|
|
if (attrno == POWER_SUPPLY_PROP_TYPE)
|
|
return mode;
|
|
|
|
for (i = 0; i < psy->desc->num_properties; i++) {
|
|
int property = psy->desc->properties[i];
|
|
|
|
if (property == attrno) {
|
|
if (psy->desc->property_is_writeable &&
|
|
psy->desc->property_is_writeable(psy, property) > 0)
|
|
mode |= S_IWUSR;
|
|
|
|
return mode;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct attribute_group power_supply_attr_group = {
|
|
.attrs = __power_supply_attrs,
|
|
.is_visible = power_supply_attr_is_visible,
|
|
};
|
|
|
|
static const struct attribute_group *power_supply_attr_groups[] = {
|
|
&power_supply_attr_group,
|
|
NULL,
|
|
};
|
|
|
|
static void str_to_lower(char *str)
|
|
{
|
|
while (*str) {
|
|
*str = tolower(*str);
|
|
str++;
|
|
}
|
|
}
|
|
|
|
void power_supply_init_attrs(struct device_type *dev_type)
|
|
{
|
|
int i;
|
|
|
|
dev_type->groups = power_supply_attr_groups;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(power_supply_attrs); i++) {
|
|
struct device_attribute *attr;
|
|
|
|
if (!power_supply_attrs[i].prop_name) {
|
|
pr_warn("%s: Property %d skipped because it is missing from power_supply_attrs\n",
|
|
__func__, i);
|
|
sprintf(power_supply_attrs[i].attr_name, "_err_%d", i);
|
|
} else {
|
|
str_to_lower(power_supply_attrs[i].attr_name);
|
|
}
|
|
|
|
attr = &power_supply_attrs[i].dev_attr;
|
|
|
|
attr->attr.name = power_supply_attrs[i].attr_name;
|
|
attr->show = power_supply_show_property;
|
|
attr->store = power_supply_store_property;
|
|
__power_supply_attrs[i] = &attr->attr;
|
|
}
|
|
}
|
|
|
|
static int add_prop_uevent(const struct device *dev, struct kobj_uevent_env *env,
|
|
enum power_supply_property prop, char *prop_buf)
|
|
{
|
|
int ret = 0;
|
|
struct power_supply_attr *pwr_attr;
|
|
struct device_attribute *dev_attr;
|
|
char *line;
|
|
|
|
pwr_attr = &power_supply_attrs[prop];
|
|
dev_attr = &pwr_attr->dev_attr;
|
|
|
|
ret = power_supply_show_property((struct device *)dev, dev_attr, prop_buf);
|
|
if (ret == -ENODEV || ret == -ENODATA) {
|
|
/*
|
|
* When a battery is absent, we expect -ENODEV. Don't abort;
|
|
* send the uevent with at least the PRESENT=0 property
|
|
*/
|
|
return 0;
|
|
}
|
|
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
line = strchr(prop_buf, '\n');
|
|
if (line)
|
|
*line = 0;
|
|
|
|
return add_uevent_var(env, "POWER_SUPPLY_%s=%s",
|
|
pwr_attr->prop_name, prop_buf);
|
|
}
|
|
|
|
int power_supply_uevent(const struct device *dev, struct kobj_uevent_env *env)
|
|
{
|
|
const struct power_supply *psy = dev_get_drvdata(dev);
|
|
int ret = 0, j;
|
|
char *prop_buf;
|
|
|
|
if (!psy || !psy->desc) {
|
|
dev_dbg(dev, "No power supply yet\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = add_uevent_var(env, "POWER_SUPPLY_NAME=%s", psy->desc->name);
|
|
if (ret)
|
|
return ret;
|
|
|
|
prop_buf = (char *)get_zeroed_page(GFP_KERNEL);
|
|
if (!prop_buf)
|
|
return -ENOMEM;
|
|
|
|
ret = add_prop_uevent(dev, env, POWER_SUPPLY_PROP_TYPE, prop_buf);
|
|
if (ret)
|
|
goto out;
|
|
|
|
for (j = 0; j < psy->desc->num_properties; j++) {
|
|
ret = add_prop_uevent(dev, env, psy->desc->properties[j],
|
|
prop_buf);
|
|
if (ret)
|
|
goto out;
|
|
}
|
|
|
|
out:
|
|
free_page((unsigned long)prop_buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
ssize_t power_supply_charge_behaviour_show(struct device *dev,
|
|
unsigned int available_behaviours,
|
|
enum power_supply_charge_behaviour current_behaviour,
|
|
char *buf)
|
|
{
|
|
bool match = false, available, active;
|
|
ssize_t count = 0;
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(POWER_SUPPLY_CHARGE_BEHAVIOUR_TEXT); i++) {
|
|
available = available_behaviours & BIT(i);
|
|
active = i == current_behaviour;
|
|
|
|
if (available && active) {
|
|
count += sysfs_emit_at(buf, count, "[%s] ",
|
|
POWER_SUPPLY_CHARGE_BEHAVIOUR_TEXT[i]);
|
|
match = true;
|
|
} else if (available) {
|
|
count += sysfs_emit_at(buf, count, "%s ",
|
|
POWER_SUPPLY_CHARGE_BEHAVIOUR_TEXT[i]);
|
|
}
|
|
}
|
|
|
|
if (!match) {
|
|
dev_warn(dev, "driver reporting unsupported charge behaviour\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (count)
|
|
buf[count - 1] = '\n';
|
|
|
|
return count;
|
|
}
|
|
EXPORT_SYMBOL_GPL(power_supply_charge_behaviour_show);
|
|
|
|
int power_supply_charge_behaviour_parse(unsigned int available_behaviours, const char *buf)
|
|
{
|
|
int i = sysfs_match_string(POWER_SUPPLY_CHARGE_BEHAVIOUR_TEXT, buf);
|
|
|
|
if (i < 0)
|
|
return i;
|
|
|
|
if (available_behaviours & BIT(i))
|
|
return i;
|
|
|
|
return -EINVAL;
|
|
}
|
|
EXPORT_SYMBOL_GPL(power_supply_charge_behaviour_parse);
|