diff options
| -rw-r--r-- | drivers/hid/hid-logitech-hidpp.c | 172 |
1 files changed, 168 insertions, 4 deletions
diff --git a/drivers/hid/hid-logitech-hidpp.c b/drivers/hid/hid-logitech-hidpp.c index 7b88f0616ec6..bb063e7d48df 100644 --- a/drivers/hid/hid-logitech-hidpp.c +++ b/drivers/hid/hid-logitech-hidpp.c @@ -91,6 +91,7 @@ MODULE_PARM_DESC(disable_tap_to_click, #define HIDPP_CAPABILITY_HIDPP20_BATTERY BIT(1) #define HIDPP_CAPABILITY_BATTERY_MILEAGE BIT(2) #define HIDPP_CAPABILITY_BATTERY_LEVEL_STATUS BIT(3) +#define HIDPP_CAPABILITY_BATTERY_VOLTAGE BIT(4) /* * There are two hidpp protocols in use, the first version hidpp10 is known @@ -139,12 +140,15 @@ struct hidpp_report { struct hidpp_battery { u8 feature_index; u8 solar_feature_index; + u8 voltage_feature_index; struct power_supply_desc desc; struct power_supply *ps; char name[64]; int status; int capacity; int level; + int voltage; + int charge_type; bool online; }; @@ -1237,6 +1241,144 @@ static int hidpp20_battery_event(struct hidpp_device *hidpp, return 0; } +/* -------------------------------------------------------------------------- */ +/* 0x1001: Battery voltage */ +/* -------------------------------------------------------------------------- */ + +#define HIDPP_PAGE_BATTERY_VOLTAGE 0x1001 + +#define CMD_BATTERY_VOLTAGE_GET_BATTERY_VOLTAGE 0x00 + +#define EVENT_BATTERY_VOLTAGE_STATUS_BROADCAST 0x00 + +static int hidpp20_battery_map_status_voltage(u8 data[3], int *voltage, + int *level, int *charge_type) +{ + int status; + + long charge_sts = (long)data[2]; + + *level = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN; + switch (data[2] & 0xe0) { + case 0x00: + status = POWER_SUPPLY_STATUS_CHARGING; + break; + case 0x20: + status = POWER_SUPPLY_STATUS_FULL; + *level = POWER_SUPPLY_CAPACITY_LEVEL_FULL; + break; + case 0x40: + status = POWER_SUPPLY_STATUS_DISCHARGING; + break; + case 0xe0: + status = POWER_SUPPLY_STATUS_NOT_CHARGING; + break; + default: + status = POWER_SUPPLY_STATUS_UNKNOWN; + } + + *charge_type = POWER_SUPPLY_CHARGE_TYPE_STANDARD; + if (test_bit(3, &charge_sts)) { + *charge_type = POWER_SUPPLY_CHARGE_TYPE_FAST; + } + if (test_bit(4, &charge_sts)) { + *charge_type = POWER_SUPPLY_CHARGE_TYPE_TRICKLE; + } + + if (test_bit(5, &charge_sts)) { + *level = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL; + } + + *voltage = get_unaligned_be16(data); + + return status; +} + +static int hidpp20_battery_get_battery_voltage(struct hidpp_device *hidpp, + u8 feature_index, + int *status, int *voltage, + int *level, int *charge_type) +{ + struct hidpp_report response; + int ret; + u8 *params = (u8 *)response.fap.params; + + ret = hidpp_send_fap_command_sync(hidpp, feature_index, + CMD_BATTERY_VOLTAGE_GET_BATTERY_VOLTAGE, + NULL, 0, &response); + + if (ret > 0) { + hid_err(hidpp->hid_dev, "%s: received protocol error 0x%02x\n", + __func__, ret); + return -EPROTO; + } + if (ret) + return ret; + + hidpp->capabilities |= HIDPP_CAPABILITY_BATTERY_VOLTAGE; + + *status = hidpp20_battery_map_status_voltage(params, voltage, + level, charge_type); + + return 0; +} + +static int hidpp20_query_battery_voltage_info(struct hidpp_device *hidpp) +{ + u8 feature_type; + int ret; + int status, voltage, level, charge_type; + + if (hidpp->battery.voltage_feature_index == 0xff) { + ret = hidpp_root_get_feature(hidpp, HIDPP_PAGE_BATTERY_VOLTAGE, + &hidpp->battery.voltage_feature_index, + &feature_type); + if (ret) + return ret; + } + + ret = hidpp20_battery_get_battery_voltage(hidpp, + hidpp->battery.voltage_feature_index, + &status, &voltage, &level, &charge_type); + + if (ret) + return ret; + + hidpp->battery.status = status; + hidpp->battery.voltage = voltage; + hidpp->battery.level = level; + hidpp->battery.charge_type = charge_type; + hidpp->battery.online = status != POWER_SUPPLY_STATUS_NOT_CHARGING; + + return 0; +} + +static int hidpp20_battery_voltage_event(struct hidpp_device *hidpp, + u8 *data, int size) +{ + struct hidpp_report *report = (struct hidpp_report *)data; + int status, voltage, level, charge_type; + + if (report->fap.feature_index != hidpp->battery.voltage_feature_index || + report->fap.funcindex_clientid != EVENT_BATTERY_VOLTAGE_STATUS_BROADCAST) + return 0; + + status = hidpp20_battery_map_status_voltage(report->fap.params, &voltage, + &level, &charge_type); + + hidpp->battery.online = status != POWER_SUPPLY_STATUS_NOT_CHARGING; + + if (voltage != hidpp->battery.voltage || status != hidpp->battery.status) { + hidpp->battery.voltage = voltage; + hidpp->battery.status = status; + hidpp->battery.level = level; + hidpp->battery.charge_type = charge_type; + if (hidpp->battery.ps) + power_supply_changed(hidpp->battery.ps); + } + return 0; +} + static enum power_supply_property hidpp_battery_props[] = { POWER_SUPPLY_PROP_ONLINE, POWER_SUPPLY_PROP_STATUS, @@ -1246,6 +1388,7 @@ static enum power_supply_property hidpp_battery_props[] = { POWER_SUPPLY_PROP_SERIAL_NUMBER, 0, /* placeholder for POWER_SUPPLY_PROP_CAPACITY, */ 0, /* placeholder for POWER_SUPPLY_PROP_CAPACITY_LEVEL, */ + 0, /* placeholder for POWER_SUPPLY_PROP_VOLTAGE_NOW, */ }; static int hidpp_battery_get_property(struct power_supply *psy, @@ -1283,6 +1426,13 @@ static int hidpp_battery_get_property(struct power_supply *psy, case POWER_SUPPLY_PROP_SERIAL_NUMBER: val->strval = hidpp->hid_dev->uniq; break; + case POWER_SUPPLY_PROP_VOLTAGE_NOW: + /* hardware reports voltage in in mV. sysfs expects uV */ + val->intval = hidpp->battery.voltage * 1000; + break; + case POWER_SUPPLY_PROP_CHARGE_TYPE: + val->intval = hidpp->battery.charge_type; + break; default: ret = -EINVAL; break; @@ -3139,6 +3289,9 @@ static int hidpp_raw_hidpp_event(struct hidpp_device *hidpp, u8 *data, ret = hidpp_solar_battery_event(hidpp, data, size); if (ret != 0) return ret; + ret = hidpp20_battery_voltage_event(hidpp, data, size); + if (ret != 0) + return ret; } if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP10_BATTERY) { @@ -3260,12 +3413,16 @@ static int hidpp_initialize_battery(struct hidpp_device *hidpp) hidpp->battery.feature_index = 0xff; hidpp->battery.solar_feature_index = 0xff; + hidpp->battery.voltage_feature_index = 0xff; if (hidpp->protocol_major >= 2) { if (hidpp->quirks & HIDPP_QUIRK_CLASS_K750) ret = hidpp_solar_request_battery_event(hidpp); - else - ret = hidpp20_query_battery_info(hidpp); + else { + ret = hidpp20_query_battery_voltage_info(hidpp); + if (ret) + ret = hidpp20_query_battery_info(hidpp); + } if (ret) return ret; @@ -3290,7 +3447,7 @@ static int hidpp_initialize_battery(struct hidpp_device *hidpp) if (!battery_props) return -ENOMEM; - num_battery_props = ARRAY_SIZE(hidpp_battery_props) - 2; + num_battery_props = ARRAY_SIZE(hidpp_battery_props) - 3; if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_MILEAGE) battery_props[num_battery_props++] = @@ -3300,6 +3457,10 @@ static int hidpp_initialize_battery(struct hidpp_device *hidpp) battery_props[num_battery_props++] = POWER_SUPPLY_PROP_CAPACITY_LEVEL; + if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_VOLTAGE) + battery_props[num_battery_props++] = + POWER_SUPPLY_PROP_VOLTAGE_NOW; + battery = &hidpp->battery; n = atomic_inc_return(&battery_no) - 1; @@ -3463,7 +3624,10 @@ static void hidpp_connect_event(struct hidpp_device *hidpp) else hidpp10_query_battery_status(hidpp); } else if (hidpp->capabilities & HIDPP_CAPABILITY_HIDPP20_BATTERY) { - hidpp20_query_battery_info(hidpp); + if (hidpp->capabilities & HIDPP_CAPABILITY_BATTERY_VOLTAGE) + hidpp20_query_battery_voltage_info(hidpp); + else + hidpp20_query_battery_info(hidpp); } if (hidpp->battery.ps) power_supply_changed(hidpp->battery.ps); |