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HID: input: map battery system charging

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HID descriptors with Battery System (0x85) Charging (0x44) usage are
ignored and POWER_SUPPLY_STATUS_DISCHARGING is always reported to user
space, even when the device is charging.

Map this usage and when it is reported set the right charging status.

In addition, add KUnit tests to make sure that the charging status is
correctly set and reported. They can be run with the usual command:

    $ ./tools/testing/kunit/kunit.py run --kunitconfig=drivers/hid

Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
José Expósito
2022-11-24 18:59:37 +01:00
committed by Jiri Kosina
parent 2043f9a37d
commit a608dc1c06
5 changed files with 118 additions and 2 deletions
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80
drivers/hid/hid-input-test.c Normal file
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// SPDX-License-Identifier: GPL-2.0+
/*
* HID to Linux Input mapping
*
* Copyright (c) 2022 José Expósito <jose.exposito89@gmail.com>
*/
#include <kunit/test.h>
static void hid_test_input_set_battery_charge_status(struct kunit *test)
{
struct hid_device *dev;
bool handled;
dev = kunit_kzalloc(test, sizeof(*dev), GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
handled = hidinput_set_battery_charge_status(dev, HID_DG_HEIGHT, 0);
KUNIT_EXPECT_FALSE(test, handled);
KUNIT_EXPECT_EQ(test, dev->battery_charge_status, POWER_SUPPLY_STATUS_UNKNOWN);
handled = hidinput_set_battery_charge_status(dev, HID_BAT_CHARGING, 0);
KUNIT_EXPECT_TRUE(test, handled);
KUNIT_EXPECT_EQ(test, dev->battery_charge_status, POWER_SUPPLY_STATUS_DISCHARGING);
handled = hidinput_set_battery_charge_status(dev, HID_BAT_CHARGING, 1);
KUNIT_EXPECT_TRUE(test, handled);
KUNIT_EXPECT_EQ(test, dev->battery_charge_status, POWER_SUPPLY_STATUS_CHARGING);
}
static void hid_test_input_get_battery_property(struct kunit *test)
{
struct power_supply *psy;
struct hid_device *dev;
union power_supply_propval val;
int ret;
dev = kunit_kzalloc(test, sizeof(*dev), GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
dev->battery_avoid_query = true;
psy = kunit_kzalloc(test, sizeof(*psy), GFP_KERNEL);
KUNIT_ASSERT_NOT_ERR_OR_NULL(test, psy);
psy->drv_data = dev;
dev->battery_status = HID_BATTERY_UNKNOWN;
dev->battery_charge_status = POWER_SUPPLY_STATUS_CHARGING;
ret = hidinput_get_battery_property(psy, POWER_SUPPLY_PROP_STATUS, &val);
KUNIT_EXPECT_EQ(test, ret, 0);
KUNIT_EXPECT_EQ(test, val.intval, POWER_SUPPLY_STATUS_UNKNOWN);
dev->battery_status = HID_BATTERY_REPORTED;
dev->battery_charge_status = POWER_SUPPLY_STATUS_CHARGING;
ret = hidinput_get_battery_property(psy, POWER_SUPPLY_PROP_STATUS, &val);
KUNIT_EXPECT_EQ(test, ret, 0);
KUNIT_EXPECT_EQ(test, val.intval, POWER_SUPPLY_STATUS_CHARGING);
dev->battery_status = HID_BATTERY_REPORTED;
dev->battery_charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
ret = hidinput_get_battery_property(psy, POWER_SUPPLY_PROP_STATUS, &val);
KUNIT_EXPECT_EQ(test, ret, 0);
KUNIT_EXPECT_EQ(test, val.intval, POWER_SUPPLY_STATUS_DISCHARGING);
}
static struct kunit_case hid_input_tests[] = {
KUNIT_CASE(hid_test_input_set_battery_charge_status),
KUNIT_CASE(hid_test_input_get_battery_property),
{ }
};
static struct kunit_suite hid_input_test_suite = {
.name = "hid_input",
.test_cases = hid_input_tests,
};
kunit_test_suite(hid_input_test_suite);
MODULE_DESCRIPTION("HID input KUnit tests");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("José Expósito <jose.exposito89@gmail.com>");