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HID: logitech-hidpp: battery: provide CAPACITY property for newer devices
For devices that only support the BATTERY_VOLTAGE (0x1001) feature, UPower requires the additional information provided by this patch, to set them up. Signed-off-by: Hamza Mahfooz <someguy@effective-light.com> Reviewed-by: Filipe Laíns <lains@riseup.net> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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@ -1331,6 +1331,43 @@ static int hidpp20_battery_get_battery_voltage(struct hidpp_device *hidpp,
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return 0;
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}
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static int hidpp20_map_battery_capacity(struct hid_device *hid_dev, int voltage)
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{
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/* NB: This voltage curve doesn't necessarily map perfectly to all
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* devices that implement the BATTERY_VOLTAGE feature. This is because
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* there are a few devices that use different battery technology.
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*/
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static const int voltages[] = {
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4186, 4156, 4143, 4133, 4122, 4113, 4103, 4094, 4086, 4075,
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4067, 4059, 4051, 4043, 4035, 4027, 4019, 4011, 4003, 3997,
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3989, 3983, 3976, 3969, 3961, 3955, 3949, 3942, 3935, 3929,
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3922, 3916, 3909, 3902, 3896, 3890, 3883, 3877, 3870, 3865,
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3859, 3853, 3848, 3842, 3837, 3833, 3828, 3824, 3819, 3815,
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3811, 3808, 3804, 3800, 3797, 3793, 3790, 3787, 3784, 3781,
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3778, 3775, 3772, 3770, 3767, 3764, 3762, 3759, 3757, 3754,
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3751, 3748, 3744, 3741, 3737, 3734, 3730, 3726, 3724, 3720,
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3717, 3714, 3710, 3706, 3702, 3697, 3693, 3688, 3683, 3677,
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3671, 3666, 3662, 3658, 3654, 3646, 3633, 3612, 3579, 3537
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};
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int i;
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BUILD_BUG_ON(ARRAY_SIZE(voltages) != 100);
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if (unlikely(voltage < 3500 || voltage >= 5000))
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hid_warn_once(hid_dev,
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"%s: possibly using the wrong voltage curve\n",
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__func__);
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for (i = 0; i < ARRAY_SIZE(voltages); i++) {
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if (voltage >= voltages[i])
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return ARRAY_SIZE(voltages) - i;
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}
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return 0;
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}
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static int hidpp20_query_battery_voltage_info(struct hidpp_device *hidpp)
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{
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u8 feature_type;
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@ -1354,6 +1391,8 @@ static int hidpp20_query_battery_voltage_info(struct hidpp_device *hidpp)
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hidpp->battery.status = status;
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hidpp->battery.voltage = voltage;
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hidpp->battery.capacity = hidpp20_map_battery_capacity(hidpp->hid_dev,
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voltage);
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hidpp->battery.level = level;
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hidpp->battery.charge_type = charge_type;
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hidpp->battery.online = status != POWER_SUPPLY_STATUS_NOT_CHARGING;
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@ -1378,6 +1417,8 @@ static int hidpp20_battery_voltage_event(struct hidpp_device *hidpp,
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if (voltage != hidpp->battery.voltage || status != hidpp->battery.status) {
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hidpp->battery.voltage = voltage;
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hidpp->battery.capacity = hidpp20_map_battery_capacity(hidpp->hid_dev,
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voltage);
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hidpp->battery.status = status;
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hidpp->battery.level = level;
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hidpp->battery.charge_type = charge_type;
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@ -3716,7 +3757,8 @@ static int hidpp_initialize_battery(struct hidpp_device *hidpp)
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num_battery_props = ARRAY_SIZE(hidpp_battery_props) - 3;
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if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_MILEAGE ||
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hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_PERCENTAGE)
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hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_PERCENTAGE ||
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hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_VOLTAGE)
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battery_props[num_battery_props++] =
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POWER_SUPPLY_PROP_CAPACITY;
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