// SPDX-License-Identifier: GPL-2.0-only /* * Battery driver for One Laptop Per Child board. * * Copyright © 2006-2010 David Woodhouse <[email protected]> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/mod_devicetable.h> #include <linux/types.h> #include <linux/err.h> #include <linux/device.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/power_supply.h> #include <linux/jiffies.h> #include <linux/sched.h> #include <linux/olpc-ec.h> #define EC_BAT_VOLTAGE … #define EC_BAT_CURRENT … #define EC_BAT_ACR … #define EC_BAT_TEMP … #define EC_AMB_TEMP … #define EC_BAT_STATUS … #define EC_BAT_SOC … #define EC_BAT_SERIAL … #define EC_BAT_EEPROM … #define EC_BAT_ERRCODE … #define BAT_STAT_PRESENT … #define BAT_STAT_FULL … #define BAT_STAT_LOW … #define BAT_STAT_DESTROY … #define BAT_STAT_AC … #define BAT_STAT_CHARGING … #define BAT_STAT_DISCHARGING … #define BAT_STAT_TRICKLE … #define BAT_ERR_INFOFAIL … #define BAT_ERR_OVERVOLTAGE … #define BAT_ERR_OVERTEMP … #define BAT_ERR_GAUGESTOP … #define BAT_ERR_OUT_OF_CONTROL … #define BAT_ERR_ID_FAIL … #define BAT_ERR_ACR_FAIL … #define BAT_ADDR_MFR_TYPE … struct olpc_battery_data { … }; /********************************************************************* * Power *********************************************************************/ static int olpc_ac_get_prop(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static enum power_supply_property olpc_ac_props[] = …; static const struct power_supply_desc olpc_ac_desc = …; static int olpc_bat_get_status(struct olpc_battery_data *data, union power_supply_propval *val, uint8_t ec_byte) { … } static int olpc_bat_get_health(union power_supply_propval *val) { … } static int olpc_bat_get_mfr(union power_supply_propval *val) { … } static int olpc_bat_get_tech(union power_supply_propval *val) { … } static int olpc_bat_get_charge_full_design(union power_supply_propval *val) { … } static int olpc_bat_get_charge_now(union power_supply_propval *val) { … } static int olpc_bat_get_voltage_max_design(union power_supply_propval *val) { … } static u16 ecword_to_cpu(struct olpc_battery_data *data, u16 ec_word) { … } /********************************************************************* * Battery properties *********************************************************************/ static int olpc_bat_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static enum power_supply_property olpc_xo1_bat_props[] = …; /* XO-1.5 does not have ambient temperature property */ static enum power_supply_property olpc_xo15_bat_props[] = …; /* EEPROM reading goes completely around the power_supply API, sadly */ #define EEPROM_START … #define EEPROM_END … #define EEPROM_SIZE … static ssize_t olpc_bat_eeprom_read(struct file *filp, struct kobject *kobj, struct bin_attribute *attr, char *buf, loff_t off, size_t count) { … } static struct bin_attribute olpc_bat_eeprom = …; /* Allow userspace to see the specific error value pulled from the EC */ static ssize_t olpc_bat_error_read(struct device *dev, struct device_attribute *attr, char *buf) { … } static struct device_attribute olpc_bat_error = …; static struct attribute *olpc_bat_sysfs_attrs[] = …; static struct bin_attribute *olpc_bat_sysfs_bin_attrs[] = …; static const struct attribute_group olpc_bat_sysfs_group = …; static const struct attribute_group *olpc_bat_sysfs_groups[] = …; /********************************************************************* * Initialisation *********************************************************************/ static struct power_supply_desc olpc_bat_desc = …; static int olpc_battery_suspend(struct platform_device *pdev, pm_message_t state) { … } static int olpc_battery_probe(struct platform_device *pdev) { … } static const struct of_device_id olpc_battery_ids[] = …; MODULE_DEVICE_TABLE(of, olpc_battery_ids); static struct platform_driver olpc_battery_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …;
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