781 lines
21 KiB
C
781 lines
21 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Copyright (c) 2019 MediaTek Inc.
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*/
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#include <linux/module.h>
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#include <linux/stat.h>
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#include <linux/init.h>
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#include <linux/ctype.h>
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#include <linux/err.h>
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#include <linux/slab.h>
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#include "charger_class.h"
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static struct class *charger_class;
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static ssize_t name_show(struct device *dev,
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struct device_attribute *attr, char *buf)
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{
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struct charger_device *chg_dev = to_charger_device(dev);
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return snprintf(buf, 20, "%s\n",
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chg_dev->props.alias_name ?
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chg_dev->props.alias_name : "anonymous");
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}
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static void charger_device_release(struct device *dev)
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{
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struct charger_device *chg_dev = to_charger_device(dev);
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kfree(chg_dev);
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}
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int charger_dev_enable(struct charger_device *chg_dev, bool en)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL && chg_dev->ops->enable)
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return chg_dev->ops->enable(chg_dev, en);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_enable);
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int charger_dev_is_enabled(struct charger_device *chg_dev, bool *en)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL && chg_dev->ops->is_enabled)
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return chg_dev->ops->is_enabled(chg_dev, en);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_is_enabled);
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int charger_dev_plug_in(struct charger_device *chg_dev)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL && chg_dev->ops->plug_in)
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return chg_dev->ops->plug_in(chg_dev);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_plug_in);
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int charger_dev_plug_out(struct charger_device *chg_dev)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL && chg_dev->ops->plug_out)
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return chg_dev->ops->plug_out(chg_dev);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_plug_out);
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int charger_dev_do_event(struct charger_device *chg_dev, u32 event, u32 args)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL && chg_dev->ops->event)
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return chg_dev->ops->event(chg_dev, event, args);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_do_event);
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int charger_dev_set_charging_current(struct charger_device *chg_dev, u32 uA)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->set_charging_current)
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return chg_dev->ops->set_charging_current(chg_dev, uA);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_set_charging_current);
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int charger_dev_get_charging_current(struct charger_device *chg_dev, u32 *uA)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->get_charging_current)
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return chg_dev->ops->get_charging_current(chg_dev, uA);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_get_charging_current);
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int charger_dev_get_min_charging_current(struct charger_device *chg_dev,
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u32 *uA)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->get_min_charging_current)
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return chg_dev->ops->get_min_charging_current(chg_dev, uA);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_get_min_charging_current);
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int charger_dev_enable_chip(struct charger_device *chg_dev, bool en)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->enable_chip)
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return chg_dev->ops->enable_chip(chg_dev, en);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_enable_chip);
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int charger_dev_is_chip_enabled(struct charger_device *chg_dev, bool *en)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->is_chip_enabled)
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return chg_dev->ops->is_chip_enabled(chg_dev, en);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_is_chip_enabled);
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int charger_dev_enable_direct_charging(struct charger_device *chg_dev, bool en)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->enable_direct_charging)
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return chg_dev->ops->enable_direct_charging(chg_dev, en);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_enable_direct_charging);
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int charger_dev_kick_direct_charging_wdt(struct charger_device *chg_dev)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->kick_direct_charging_wdt)
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return chg_dev->ops->kick_direct_charging_wdt(chg_dev);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_kick_direct_charging_wdt);
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int charger_dev_get_vbus(struct charger_device *chg_dev, u32 *vbus)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->get_vbus_adc)
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return chg_dev->ops->get_vbus_adc(chg_dev, vbus);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_get_vbus);
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int charger_dev_get_ibus(struct charger_device *chg_dev, u32 *ibus)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->get_ibus_adc)
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return chg_dev->ops->get_ibus_adc(chg_dev, ibus);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_get_ibus);
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int charger_dev_get_ibat(struct charger_device *chg_dev, u32 *ibat)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->get_ibat_adc)
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return chg_dev->ops->get_ibat_adc(chg_dev, ibat);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_get_ibat);
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int charger_dev_get_temperature(struct charger_device *chg_dev, int *tchg_min,
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int *tchg_max)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->get_tchg_adc)
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return chg_dev->ops->get_tchg_adc(chg_dev, tchg_min,
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tchg_max);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_get_temperature);
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int charger_dev_set_input_current(struct charger_device *chg_dev, u32 uA)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->set_input_current)
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return chg_dev->ops->set_input_current(chg_dev, uA);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_set_input_current);
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int charger_dev_get_input_current(struct charger_device *chg_dev, u32 *uA)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->get_input_current)
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return chg_dev->ops->get_input_current(chg_dev, uA);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_get_input_current);
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int charger_dev_get_min_input_current(struct charger_device *chg_dev, u32 *uA)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->get_min_input_current)
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return chg_dev->ops->get_min_input_current(chg_dev, uA);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_get_min_input_current);
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int charger_dev_set_eoc_current(struct charger_device *chg_dev, u32 uA)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->set_eoc_current)
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chg_dev->ops->set_eoc_current(chg_dev, uA);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_set_eoc_current);
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int charger_dev_get_eoc_current(struct charger_device *chg_dev, u32 *uA)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->get_eoc_current)
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return chg_dev->ops->get_eoc_current(chg_dev, uA);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_get_eoc_current);
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int charger_dev_kick_wdt(struct charger_device *chg_dev)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL && chg_dev->ops->kick_wdt)
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return chg_dev->ops->kick_wdt(chg_dev);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_kick_wdt);
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int charger_dev_set_constant_voltage(struct charger_device *chg_dev, u32 uV)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->set_constant_voltage)
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return chg_dev->ops->set_constant_voltage(chg_dev, uV);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_set_constant_voltage);
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int charger_dev_get_constant_voltage(struct charger_device *chg_dev, u32 *uV)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->get_constant_voltage)
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return chg_dev->ops->get_constant_voltage(chg_dev, uV);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_get_constant_voltage);
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int charger_dev_dump_registers(struct charger_device *chg_dev)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->dump_registers)
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return chg_dev->ops->dump_registers(chg_dev);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_dump_registers);
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int charger_dev_is_charging_done(struct charger_device *chg_dev, bool *done)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->is_charging_done)
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return chg_dev->ops->is_charging_done(chg_dev, done);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_is_charging_done);
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int charger_dev_enable_vbus_ovp(struct charger_device *chg_dev, bool en)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->enable_vbus_ovp)
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return chg_dev->ops->enable_vbus_ovp(chg_dev, en);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_enable_vbus_ovp);
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int charger_dev_set_mivr(struct charger_device *chg_dev, u32 uV)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL && chg_dev->ops->set_mivr)
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return chg_dev->ops->set_mivr(chg_dev, uV);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_set_mivr);
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int charger_dev_get_mivr(struct charger_device *chg_dev, u32 *uV)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL && chg_dev->ops->get_mivr)
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return chg_dev->ops->get_mivr(chg_dev, uV);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_get_mivr);
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int charger_dev_enable_powerpath(struct charger_device *chg_dev, bool en)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->enable_powerpath)
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return chg_dev->ops->enable_powerpath(chg_dev, en);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_enable_powerpath);
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int charger_dev_is_powerpath_enabled(struct charger_device *chg_dev, bool *en)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->is_powerpath_enabled)
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return chg_dev->ops->is_powerpath_enabled(chg_dev, en);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_is_powerpath_enabled);
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int charger_dev_enable_safety_timer(struct charger_device *chg_dev, bool en)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->enable_safety_timer)
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return chg_dev->ops->enable_safety_timer(chg_dev, en);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_enable_safety_timer);
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int charger_dev_get_adc(struct charger_device *charger_dev,
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enum adc_channel chan, int *min, int *max)
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{
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if (charger_dev != NULL && charger_dev->ops != NULL &&
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charger_dev->ops->get_adc)
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return charger_dev->ops->get_adc(charger_dev, chan, min, max);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_get_adc);
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int charger_dev_is_safety_timer_enabled(struct charger_device *chg_dev,
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bool *en)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->is_safety_timer_enabled)
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return chg_dev->ops->is_safety_timer_enabled(chg_dev, en);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_is_safety_timer_enabled);
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int charger_dev_enable_termination(struct charger_device *chg_dev, bool en)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->enable_termination)
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return chg_dev->ops->enable_termination(chg_dev, en);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_enable_termination);
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int charger_dev_get_mivr_state(struct charger_device *chg_dev, bool *in_loop)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->get_mivr_state)
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return chg_dev->ops->get_mivr_state(chg_dev, in_loop);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_get_mivr_state);
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int charger_dev_send_ta_current_pattern(struct charger_device *chg_dev,
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bool is_increase)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->send_ta_current_pattern)
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return chg_dev->ops->send_ta_current_pattern(chg_dev,
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is_increase);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_send_ta_current_pattern);
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int charger_dev_send_ta20_current_pattern(struct charger_device *chg_dev,
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u32 uV)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->send_ta20_current_pattern)
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return chg_dev->ops->send_ta20_current_pattern(chg_dev, uV);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_send_ta20_current_pattern);
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int charger_dev_reset_ta(struct charger_device *chg_dev)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->reset_ta)
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return chg_dev->ops->reset_ta(chg_dev);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_reset_ta);
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int charger_dev_set_pe20_efficiency_table(struct charger_device *chg_dev)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->set_pe20_efficiency_table)
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return chg_dev->ops->set_pe20_efficiency_table(chg_dev);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_set_pe20_efficiency_table);
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int charger_dev_enable_cable_drop_comp(struct charger_device *chg_dev, bool en)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->enable_cable_drop_comp)
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return chg_dev->ops->enable_cable_drop_comp(chg_dev, en);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_enable_cable_drop_comp);
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int charger_dev_set_direct_charging_ibusoc(struct charger_device *chg_dev,
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u32 uA)
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{
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if (chg_dev != NULL && chg_dev->ops != NULL &&
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chg_dev->ops->set_direct_charging_ibusoc)
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return chg_dev->ops->set_direct_charging_ibusoc(chg_dev,
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uA);
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return -ENOTSUPP;
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}
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EXPORT_SYMBOL(charger_dev_set_direct_charging_ibusoc);
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int charger_dev_set_direct_charging_vbusov(struct charger_device *chg_dev,
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u32 uV)
|
|
{
|
|
if (chg_dev != NULL && chg_dev->ops != NULL &&
|
|
chg_dev->ops->set_direct_charging_vbusov)
|
|
return chg_dev->ops->set_direct_charging_vbusov(chg_dev,
|
|
uV);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_set_direct_charging_vbusov);
|
|
|
|
int charger_dev_enable_chg_type_det(struct charger_device *chg_dev, bool en)
|
|
{
|
|
if (chg_dev != NULL && chg_dev->ops != NULL &&
|
|
chg_dev->ops->enable_chg_type_det)
|
|
return chg_dev->ops->enable_chg_type_det(chg_dev, en);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_enable_chg_type_det);
|
|
|
|
int charger_dev_enable_otg(struct charger_device *chg_dev, bool en)
|
|
{
|
|
if (chg_dev != NULL && chg_dev->ops != NULL && chg_dev->ops->enable_otg)
|
|
return chg_dev->ops->enable_otg(chg_dev, en);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_enable_otg);
|
|
|
|
int charger_dev_enable_discharge(struct charger_device *chg_dev, bool en)
|
|
{
|
|
if (chg_dev != NULL && chg_dev->ops != NULL &&
|
|
chg_dev->ops->enable_discharge)
|
|
return chg_dev->ops->enable_discharge(chg_dev, en);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_enable_discharge);
|
|
|
|
int charger_dev_set_boost_current_limit(struct charger_device *chg_dev, u32 uA)
|
|
{
|
|
if (chg_dev != NULL && chg_dev->ops != NULL &&
|
|
chg_dev->ops->set_boost_current_limit)
|
|
return chg_dev->ops->set_boost_current_limit(chg_dev, uA);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_set_boost_current_limit);
|
|
|
|
int charger_dev_get_zcv(struct charger_device *chg_dev, u32 *uV)
|
|
{
|
|
if (chg_dev != NULL && chg_dev->ops != NULL && chg_dev->ops->get_zcv)
|
|
return chg_dev->ops->get_zcv(chg_dev, uV);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_get_zcv);
|
|
|
|
int charger_dev_run_aicl(struct charger_device *chg_dev, u32 *uA)
|
|
{
|
|
if (chg_dev != NULL && chg_dev->ops != NULL && chg_dev->ops->run_aicl)
|
|
return chg_dev->ops->run_aicl(chg_dev, uA);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_run_aicl);
|
|
|
|
int charger_dev_reset_eoc_state(struct charger_device *chg_dev)
|
|
{
|
|
if (chg_dev != NULL && chg_dev->ops != NULL &&
|
|
chg_dev->ops->reset_eoc_state)
|
|
return chg_dev->ops->reset_eoc_state(chg_dev);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_reset_eoc_state);
|
|
|
|
int charger_dev_safety_check(struct charger_device *chg_dev, u32 polling_ieoc)
|
|
{
|
|
if (chg_dev != NULL && chg_dev->ops != NULL &&
|
|
chg_dev->ops->safety_check)
|
|
return chg_dev->ops->safety_check(chg_dev, polling_ieoc);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
|
|
int charger_dev_notify(struct charger_device *chg_dev, int event)
|
|
{
|
|
return srcu_notifier_call_chain(
|
|
&chg_dev->evt_nh, event, &chg_dev->noti);
|
|
}
|
|
|
|
int charger_dev_enable_usbid(struct charger_device *charger_dev, bool en)
|
|
{
|
|
if (charger_dev != NULL && charger_dev->ops != NULL &&
|
|
charger_dev->ops->enable_usbid)
|
|
return charger_dev->ops->enable_usbid(charger_dev, en);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_enable_usbid);
|
|
|
|
int charger_dev_set_usbid_rup(struct charger_device *charger_dev, u32 rup)
|
|
{
|
|
if (charger_dev != NULL && charger_dev->ops != NULL &&
|
|
charger_dev->ops->set_usbid_rup)
|
|
return charger_dev->ops->set_usbid_rup(charger_dev, rup);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_set_usbid_rup);
|
|
|
|
int charger_dev_set_usbid_src_ton(struct charger_device *charger_dev,
|
|
u32 src_ton)
|
|
{
|
|
if (charger_dev != NULL && charger_dev->ops != NULL &&
|
|
charger_dev->ops->set_usbid_src_ton)
|
|
return charger_dev->ops->set_usbid_src_ton(charger_dev,
|
|
src_ton);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_set_usbid_src_ton);
|
|
|
|
int charger_dev_enable_usbid_floating(struct charger_device *charger_dev,
|
|
bool en)
|
|
{
|
|
if (charger_dev != NULL && charger_dev->ops != NULL &&
|
|
charger_dev->ops->enable_usbid_floating)
|
|
return charger_dev->ops->enable_usbid_floating(charger_dev, en);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_enable_usbid_floating);
|
|
|
|
int charger_dev_enable_force_typec_otp(struct charger_device *charger_dev,
|
|
bool en)
|
|
{
|
|
if (charger_dev != NULL && charger_dev->ops != NULL &&
|
|
charger_dev->ops->enable_force_typec_otp)
|
|
return charger_dev->ops->enable_force_typec_otp(charger_dev,
|
|
en);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_enable_force_typec_otp);
|
|
|
|
int charger_dev_get_ctd_dischg_status(struct charger_device *charger_dev,
|
|
u8 *status)
|
|
{
|
|
if (charger_dev != NULL && charger_dev->ops != NULL &&
|
|
charger_dev->ops->get_ctd_dischg_status)
|
|
return charger_dev->ops->get_ctd_dischg_status(charger_dev,
|
|
status);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_get_ctd_dischg_status);
|
|
|
|
int charger_dev_enable_hidden_mode(struct charger_device *charger_dev, bool en)
|
|
{
|
|
if (charger_dev != NULL && charger_dev->ops != NULL &&
|
|
charger_dev->ops->enable_hidden_mode)
|
|
return charger_dev->ops->enable_hidden_mode(charger_dev, en);
|
|
|
|
return -ENOTSUPP;
|
|
}
|
|
EXPORT_SYMBOL(charger_dev_enable_hidden_mode);
|
|
|
|
static DEVICE_ATTR_RO(name);
|
|
|
|
static struct attribute *charger_class_attrs[] = {
|
|
&dev_attr_name.attr,
|
|
NULL,
|
|
};
|
|
|
|
static const struct attribute_group charger_group = {
|
|
.attrs = charger_class_attrs,
|
|
};
|
|
|
|
static const struct attribute_group *charger_groups[] = {
|
|
&charger_group,
|
|
NULL,
|
|
};
|
|
|
|
int register_charger_device_notifier(struct charger_device *chg_dev,
|
|
struct notifier_block *nb)
|
|
{
|
|
int ret;
|
|
|
|
ret = srcu_notifier_chain_register(&chg_dev->evt_nh, nb);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(register_charger_device_notifier);
|
|
|
|
int unregister_charger_device_notifier(struct charger_device *chg_dev,
|
|
struct notifier_block *nb)
|
|
{
|
|
return srcu_notifier_chain_unregister(&chg_dev->evt_nh, nb);
|
|
}
|
|
EXPORT_SYMBOL(unregister_charger_device_notifier);
|
|
|
|
/**
|
|
* charger_device_register - create and register a new object of
|
|
* charger_device class.
|
|
* @name: the name of the new object
|
|
* @parent: a pointer to the parent device
|
|
* @devdata: an optional pointer to be stored for private driver use.
|
|
* The methods may retrieve it by using charger_get_data(charger_dev).
|
|
* @ops: the charger operations structure.
|
|
*
|
|
* Creates and registers new charger device. Returns either an
|
|
* ERR_PTR() or a pointer to the newly allocated device.
|
|
*/
|
|
struct charger_device *charger_device_register(const char *name,
|
|
struct device *parent, void *devdata,
|
|
const struct charger_ops *ops,
|
|
const struct charger_properties *props)
|
|
{
|
|
struct charger_device *chg_dev;
|
|
static struct lock_class_key key;
|
|
struct srcu_notifier_head *head;
|
|
int rc;
|
|
|
|
pr_debug("%s: name=%s\n", __func__, name);
|
|
chg_dev = kzalloc(sizeof(*chg_dev), GFP_KERNEL);
|
|
if (!chg_dev)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
head = &chg_dev->evt_nh;
|
|
srcu_init_notifier_head(head);
|
|
/* Rename srcu's lock to avoid LockProve warning */
|
|
lockdep_init_map(&(&head->srcu)->dep_map, name, &key, 0);
|
|
mutex_init(&chg_dev->ops_lock);
|
|
chg_dev->dev.class = charger_class;
|
|
chg_dev->dev.parent = parent;
|
|
chg_dev->dev.release = charger_device_release;
|
|
dev_set_name(&chg_dev->dev, name);
|
|
dev_set_drvdata(&chg_dev->dev, devdata);
|
|
|
|
/* Copy properties */
|
|
if (props) {
|
|
memcpy(&chg_dev->props, props,
|
|
sizeof(struct charger_properties));
|
|
}
|
|
rc = device_register(&chg_dev->dev);
|
|
if (rc) {
|
|
kfree(chg_dev);
|
|
return ERR_PTR(rc);
|
|
}
|
|
chg_dev->ops = ops;
|
|
return chg_dev;
|
|
}
|
|
EXPORT_SYMBOL(charger_device_register);
|
|
|
|
/**
|
|
* charger_device_unregister - unregisters a switching charger device
|
|
* object.
|
|
* @charger_dev: the switching charger device object to be unregistered
|
|
* and freed.
|
|
*
|
|
* Unregisters a previously registered via charger_device_register object.
|
|
*/
|
|
void charger_device_unregister(struct charger_device *chg_dev)
|
|
{
|
|
if (!chg_dev)
|
|
return;
|
|
|
|
mutex_lock(&chg_dev->ops_lock);
|
|
chg_dev->ops = NULL;
|
|
mutex_unlock(&chg_dev->ops_lock);
|
|
device_unregister(&chg_dev->dev);
|
|
}
|
|
EXPORT_SYMBOL(charger_device_unregister);
|
|
|
|
|
|
static int charger_match_device_by_name(struct device *dev,
|
|
const void *data)
|
|
{
|
|
const char *name = data;
|
|
|
|
return strcmp(dev_name(dev), name) == 0;
|
|
}
|
|
|
|
struct charger_device *get_charger_by_name(const char *name)
|
|
{
|
|
struct device *dev;
|
|
|
|
if (!name)
|
|
return (struct charger_device *)NULL;
|
|
dev = class_find_device(charger_class, NULL, name,
|
|
charger_match_device_by_name);
|
|
|
|
return dev ? to_charger_device(dev) : NULL;
|
|
|
|
}
|
|
EXPORT_SYMBOL(get_charger_by_name);
|
|
|
|
static void __exit charger_class_exit(void)
|
|
{
|
|
class_destroy(charger_class);
|
|
}
|
|
|
|
static int __init charger_class_init(void)
|
|
{
|
|
charger_class = class_create(THIS_MODULE, "switching_charger");
|
|
if (IS_ERR(charger_class)) {
|
|
pr_notice("Unable to create charger class; errno = %ld\n",
|
|
PTR_ERR(charger_class));
|
|
return PTR_ERR(charger_class);
|
|
}
|
|
charger_class->dev_groups = charger_groups;
|
|
return 0;
|
|
}
|
|
|
|
subsys_initcall(charger_class_init);
|
|
module_exit(charger_class_exit);
|
|
|
|
MODULE_DESCRIPTION("Switching Charger Class Device");
|
|
MODULE_AUTHOR("Patrick Chang <patrick_chang@richtek.com>");
|
|
MODULE_VERSION("1.0.0_G");
|
|
MODULE_LICENSE("GPL");
|