109 lines
2.5 KiB
C
109 lines
2.5 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
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*/
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#include <linux/kernel.h>
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/power_supply.h>
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struct wall_charger_type {
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struct power_supply_desc wall_desc;
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struct power_supply_config wall_cfg;
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enum power_supply_usb_type type;
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struct power_supply *wall_psy;
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};
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static enum power_supply_property wall_properties[] = {
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POWER_SUPPLY_PROP_ONLINE,
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POWER_SUPPLY_PROP_CURRENT_MAX,
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POWER_SUPPLY_PROP_VOLTAGE_MAX,
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};
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static int wall_get_property(struct power_supply *psy,
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enum power_supply_property psp, union power_supply_propval *val)
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{
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int ret = 0;
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struct wall_charger_type *info;
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info = (struct wall_charger_type *)power_supply_get_drvdata(psy);
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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val->intval = 1;
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break;
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default:
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static int wallpower_probe(struct platform_device *pdev)
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{
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struct wall_charger_type *info;
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info = devm_kzalloc(&pdev->dev, sizeof(*info), GFP_KERNEL);
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if (!info)
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return -ENOMEM;
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info->wall_desc.name = "Ac";
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info->wall_desc.type = POWER_SUPPLY_TYPE_MAINS;
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info->wall_desc.properties = wall_properties;
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info->wall_desc.num_properties = ARRAY_SIZE(wall_properties);
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info->wall_desc.get_property = wall_get_property;
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info->wall_cfg.drv_data = info;
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platform_set_drvdata(pdev, info);
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info->wall_psy = power_supply_register(&pdev->dev,
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&info->wall_desc, &info->wall_cfg);
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if (IS_ERR(info->wall_psy)) {
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pr_notice("%s Failed to register power supply: %ld\n",
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__func__, PTR_ERR(info->wall_psy));
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return PTR_ERR(info->wall_psy);
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}
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return 0;
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}
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static int wallpower_remove(struct platform_device *pdev)
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{
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struct wall_charger_type *wall_type = platform_get_drvdata(pdev);
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power_supply_unregister(wall_type->wall_psy);
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return 0;
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}
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static struct platform_device wallpower_devices = {
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.name = "power",
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.id = 0,
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};
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static struct platform_driver wallpower_driver = {
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.probe = wallpower_probe,
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.remove = wallpower_remove,
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.driver = {
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.name = "power",
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},
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};
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static int __init wallpower_init(void)
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{
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platform_device_register(&wallpower_devices);
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platform_driver_register(&wallpower_driver);
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return 0;
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}
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static void __exit wallpower_exit(void)
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{
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platform_device_unregister(&wallpower_devices);
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platform_driver_unregister(&wallpower_driver);
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}
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module_init(wallpower_init);
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module_exit(wallpower_exit);
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MODULE_LICENSE("GPL v2");
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MODULE_DESCRIPTION("Driver for enabling Wallpower power source");
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