/* * Driver for batteries with DS2760 chips inside. * * Copyright © 2007 Anton Vorontsov * 2004-2007 Matt Reimer * 2004 Szabolcs Gyurko * * Use consistent with the GNU GPL is permitted, * provided that this copyright notice is * preserved in its entirety in all copies and derived works. * * Author: Anton Vorontsov <[email protected]> * February 2007 * * Matt Reimer <[email protected]> * April 2004, 2005, 2007 * * Szabolcs Gyurko <[email protected]> * September 2004 */ #include <linux/module.h> #include <linux/param.h> #include <linux/jiffies.h> #include <linux/workqueue.h> #include <linux/pm.h> #include <linux/slab.h> #include <linux/platform_device.h> #include <linux/power_supply.h> #include <linux/suspend.h> #include <linux/w1.h> #include <linux/of.h> static unsigned int cache_time = …; module_param(cache_time, uint, 0644); MODULE_PARM_DESC(…) …; static bool pmod_enabled; module_param(pmod_enabled, bool, 0644); MODULE_PARM_DESC(…) …; static unsigned int rated_capacity; module_param(rated_capacity, uint, 0644); MODULE_PARM_DESC(…) …; static unsigned int current_accum; module_param(current_accum, uint, 0644); MODULE_PARM_DESC(…) …; #define W1_FAMILY_DS2760 … /* Known commands to the DS2760 chip */ #define W1_DS2760_SWAP … #define W1_DS2760_READ_DATA … #define W1_DS2760_WRITE_DATA … #define W1_DS2760_COPY_DATA … #define W1_DS2760_RECALL_DATA … #define W1_DS2760_LOCK … /* Number of valid register addresses */ #define DS2760_DATA_SIZE … #define DS2760_PROTECTION_REG … #define DS2760_STATUS_REG … #define DS2760_STATUS_IE … #define DS2760_STATUS_SWEN … #define DS2760_STATUS_RNAOP … #define DS2760_STATUS_PMOD … #define DS2760_EEPROM_REG … #define DS2760_SPECIAL_FEATURE_REG … #define DS2760_VOLTAGE_MSB … #define DS2760_VOLTAGE_LSB … #define DS2760_CURRENT_MSB … #define DS2760_CURRENT_LSB … #define DS2760_CURRENT_ACCUM_MSB … #define DS2760_CURRENT_ACCUM_LSB … #define DS2760_TEMP_MSB … #define DS2760_TEMP_LSB … #define DS2760_EEPROM_BLOCK0 … #define DS2760_ACTIVE_FULL … #define DS2760_EEPROM_BLOCK1 … #define DS2760_STATUS_WRITE_REG … #define DS2760_RATED_CAPACITY … #define DS2760_CURRENT_OFFSET_BIAS … #define DS2760_ACTIVE_EMPTY … struct ds2760_device_info { … }; static int w1_ds2760_io(struct device *dev, char *buf, int addr, size_t count, int io) { … } static int w1_ds2760_read(struct device *dev, char *buf, int addr, size_t count) { … } static int w1_ds2760_write(struct device *dev, char *buf, int addr, size_t count) { … } static int w1_ds2760_eeprom_cmd(struct device *dev, int addr, int cmd) { … } static int w1_ds2760_store_eeprom(struct device *dev, int addr) { … } static int w1_ds2760_recall_eeprom(struct device *dev, int addr) { … } static ssize_t w1_slave_read(struct file *filp, struct kobject *kobj, struct bin_attribute *bin_attr, char *buf, loff_t off, size_t count) { … } static BIN_ATTR_RO(w1_slave, DS2760_DATA_SIZE); static struct bin_attribute *w1_ds2760_bin_attrs[] = …; static const struct attribute_group w1_ds2760_group = …; static const struct attribute_group *w1_ds2760_groups[] = …; /* Some batteries have their rated capacity stored a N * 10 mAh, while * others use an index into this table. */ static int rated_capacities[] = …; /* array is level at temps 0°C, 10°C, 20°C, 30°C, 40°C * temp is in Celsius */ static int battery_interpolate(int array[], int temp) { … } static int ds2760_battery_read_status(struct ds2760_device_info *di) { … } static void ds2760_battery_set_current_accum(struct ds2760_device_info *di, unsigned int acr_val) { … } static void ds2760_battery_update_status(struct ds2760_device_info *di) { … } static void ds2760_battery_write_status(struct ds2760_device_info *di, char status) { … } static void ds2760_battery_write_rated_capacity(struct ds2760_device_info *di, unsigned char rated_capacity) { … } static void ds2760_battery_write_active_full(struct ds2760_device_info *di, int active_full) { … } static void ds2760_battery_work(struct work_struct *work) { … } static void ds2760_battery_external_power_changed(struct power_supply *psy) { … } static void ds2760_battery_set_charged_work(struct work_struct *work) { … } static void ds2760_battery_set_charged(struct power_supply *psy) { … } static int ds2760_battery_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static int ds2760_battery_set_property(struct power_supply *psy, enum power_supply_property psp, const union power_supply_propval *val) { … } static int ds2760_battery_property_is_writeable(struct power_supply *psy, enum power_supply_property psp) { … } static enum power_supply_property ds2760_battery_props[] = …; static int ds2760_pm_notifier(struct notifier_block *notifier, unsigned long pm_event, void *unused) { … } static int w1_ds2760_add_slave(struct w1_slave *sl) { … } static void w1_ds2760_remove_slave(struct w1_slave *sl) { … } #ifdef CONFIG_OF static const struct of_device_id w1_ds2760_of_ids[] = …; #endif static const struct w1_family_ops w1_ds2760_fops = …; static struct w1_family w1_ds2760_family = …; module_w1_family(…); MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
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