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Release 4.14 drivers/power/supply/pmu_battery.c

/*
 * Battery class driver for Apple PMU
 *
 *      Copyright © 2006  David Woodhouse <dwmw2@infradead.org>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/err.h>
#include <linux/power_supply.h>
#include <linux/adb.h>
#include <linux/pmu.h>
#include <linux/slab.h>


static struct pmu_battery_dev {
	
struct power_supply *bat;
	
struct power_supply_desc bat_desc;
	
struct pmu_battery_info *pbi;
	
char name[16];
	
int propval;

} *pbats[PMU_MAX_BATTERIES];


#define to_pmu_battery_dev(x) power_supply_get_drvdata(x)

/*********************************************************************
 *              Power
 *********************************************************************/


static int pmu_get_ac_prop(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { switch (psp) { case POWER_SUPPLY_PROP_ONLINE: val->intval = (!!(pmu_power_flags & PMU_PWR_AC_PRESENT)) || (pmu_battery_count == 0); break; default: return -EINVAL; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
David Woodhouse58100.00%1100.00%
Total58100.00%1100.00%

static enum power_supply_property pmu_ac_props[] = { POWER_SUPPLY_PROP_ONLINE, }; static const struct power_supply_desc pmu_ac_desc = { .name = "pmu-ac", .type = POWER_SUPPLY_TYPE_MAINS, .properties = pmu_ac_props, .num_properties = ARRAY_SIZE(pmu_ac_props), .get_property = pmu_get_ac_prop, }; static struct power_supply *pmu_ac; /********************************************************************* * Battery properties *********************************************************************/ static char *pmu_batt_types[] = { "Smart", "Comet", "Hooper", "Unknown" };
static char *pmu_bat_get_model_name(struct pmu_battery_info *pbi) { switch (pbi->flags & PMU_BATT_TYPE_MASK) { case PMU_BATT_TYPE_SMART: return pmu_batt_types[0]; case PMU_BATT_TYPE_COMET: return pmu_batt_types[1]; case PMU_BATT_TYPE_HOOPER: return pmu_batt_types[2]; default: break; } return pmu_batt_types[3]; }

Contributors

PersonTokensPropCommitsCommitProp
David Woodhouse57100.00%1100.00%
Total57100.00%1100.00%


static int pmu_bat_get_property(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { struct pmu_battery_dev *pbat = to_pmu_battery_dev(psy); struct pmu_battery_info *pbi = pbat->pbi; switch (psp) { case POWER_SUPPLY_PROP_STATUS: if (pbi->flags & PMU_BATT_CHARGING) val->intval = POWER_SUPPLY_STATUS_CHARGING; else if (pmu_power_flags & PMU_PWR_AC_PRESENT) val->intval = POWER_SUPPLY_STATUS_FULL; else val->intval = POWER_SUPPLY_STATUS_DISCHARGING; break; case POWER_SUPPLY_PROP_PRESENT: val->intval = !!(pbi->flags & PMU_BATT_PRESENT); break; case POWER_SUPPLY_PROP_MODEL_NAME: val->strval = pmu_bat_get_model_name(pbi); break; case POWER_SUPPLY_PROP_ENERGY_AVG: val->intval = pbi->charge * 1000; /* mWh -> µWh */ break; case POWER_SUPPLY_PROP_ENERGY_FULL: val->intval = pbi->max_charge * 1000; /* mWh -> µWh */ break; case POWER_SUPPLY_PROP_CURRENT_AVG: val->intval = pbi->amperage * 1000; /* mA -> µA */ break; case POWER_SUPPLY_PROP_VOLTAGE_AVG: val->intval = pbi->voltage * 1000; /* mV -> µV */ break; case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG: val->intval = pbi->time_remaining; break; default: return -EINVAL; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
David Woodhouse18193.30%150.00%
Thomas Champagne136.70%150.00%
Total194100.00%2100.00%

static enum power_supply_property pmu_bat_props[] = { POWER_SUPPLY_PROP_STATUS, POWER_SUPPLY_PROP_PRESENT, POWER_SUPPLY_PROP_MODEL_NAME, POWER_SUPPLY_PROP_ENERGY_AVG, POWER_SUPPLY_PROP_ENERGY_FULL, POWER_SUPPLY_PROP_CURRENT_AVG, POWER_SUPPLY_PROP_VOLTAGE_AVG, POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG, }; /********************************************************************* * Initialisation *********************************************************************/ static struct platform_device *bat_pdev;
static int __init pmu_bat_init(void) { int ret = 0; int i; bat_pdev = platform_device_register_simple("pmu-battery", 0, NULL, 0); if (IS_ERR(bat_pdev)) { ret = PTR_ERR(bat_pdev); goto pdev_register_failed; } pmu_ac = power_supply_register(&bat_pdev->dev, &pmu_ac_desc, NULL); if (IS_ERR(pmu_ac)) { ret = PTR_ERR(pmu_ac); goto ac_register_failed; } for (i = 0; i < pmu_battery_count; i++) { struct power_supply_config psy_cfg = {}; struct pmu_battery_dev *pbat = kzalloc(sizeof(*pbat), GFP_KERNEL); if (!pbat) break; sprintf(pbat->name, "PMU_battery_%d", i); pbat->bat_desc.name = pbat->name; pbat->bat_desc.properties = pmu_bat_props; pbat->bat_desc.num_properties = ARRAY_SIZE(pmu_bat_props); pbat->bat_desc.get_property = pmu_bat_get_property; pbat->pbi = &pmu_batteries[i]; psy_cfg.drv_data = pbat; pbat->bat = power_supply_register(&bat_pdev->dev, &pbat->bat_desc, &psy_cfg); if (IS_ERR(pbat->bat)) { ret = PTR_ERR(pbat->bat); kfree(pbat); goto battery_register_failed; } pbats[i] = pbat; } goto success; battery_register_failed: while (i--) { if (!pbats[i]) continue; power_supply_unregister(pbats[i]->bat); kfree(pbats[i]); } power_supply_unregister(pmu_ac); ac_register_failed: platform_device_unregister(bat_pdev); pdev_register_failed: success: return ret; }

Contributors

PersonTokensPropCommitsCommitProp
David Woodhouse24580.86%125.00%
Krzysztof Kozlowski5718.81%250.00%
Christian Kujau10.33%125.00%
Total303100.00%4100.00%


static void __exit pmu_bat_exit(void) { int i; for (i = 0; i < PMU_MAX_BATTERIES; i++) { if (!pbats[i]) continue; power_supply_unregister(pbats[i]->bat); kfree(pbats[i]); } power_supply_unregister(pmu_ac); platform_device_unregister(bat_pdev); }

Contributors

PersonTokensPropCommitsCommitProp
David Woodhouse64100.00%1100.00%
Total64100.00%1100.00%

module_init(pmu_bat_init); module_exit(pmu_bat_exit); MODULE_AUTHOR("David Woodhouse <dwmw2@infradead.org>"); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("PMU battery driver");

Overall Contributors

PersonTokensPropCommitsCommitProp
David Woodhouse77689.71%116.67%
Krzysztof Kozlowski728.32%233.33%
Thomas Champagne131.50%116.67%
Tejun Heo30.35%116.67%
Christian Kujau10.12%116.67%
Total865100.00%6100.00%
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