// SPDX-License-Identifier: GPL-2.0-or-later /* * Support for the custom fast charging protocol found on the Lenovo Yoga * Tablet 2 1380F / 1380L models. * * Copyright (C) 2024 Hans de Goede <[email protected]> */ #define pr_fmt(fmt) … #include <linux/delay.h> #include <linux/err.h> #include <linux/errno.h> #include <linux/extcon.h> #include <linux/gpio/consumer.h> #include <linux/module.h> #include <linux/notifier.h> #include <linux/pinctrl/consumer.h> #include <linux/pinctrl/machine.h> #include <linux/platform_device.h> #include <linux/serdev.h> #include <linux/time.h> #include <linux/types.h> #include <linux/workqueue.h> #include "serdev_helpers.h" #define YT2_1380_FC_PDEV_NAME … #define YT2_1380_FC_SERDEV_CTRL … #define YT2_1380_FC_SERDEV_NAME … #define YT2_1380_FC_EXTCON_NAME … #define YT2_1380_FC_MAX_TRIES … #define YT2_1380_FC_PIN_SW_DELAY_US … #define YT2_1380_FC_UART_DRAIN_DELAY_US … #define YT2_1380_FC_VOLT_SW_DELAY_US … struct yt2_1380_fc { … }; static int yt2_1380_fc_set_gpio_mode(struct yt2_1380_fc *fc, bool enable) { … } static bool yt2_1380_fc_dedicated_charger_connected(struct yt2_1380_fc *fc) { … } static bool yt2_1380_fc_fast_charger_connected(struct yt2_1380_fc *fc) { … } static void yt2_1380_fc_worker(struct work_struct *work) { … } static int yt2_1380_fc_extcon_evt(struct notifier_block *nb, unsigned long event, void *param) { … } static size_t yt2_1380_fc_receive(struct serdev_device *serdev, const u8 *data, size_t len) { … } static const struct serdev_device_ops yt2_1380_fc_serdev_ops = …; static int yt2_1380_fc_serdev_probe(struct serdev_device *serdev) { … } struct serdev_device_driver yt2_1380_fc_serdev_driver = …; static const struct pinctrl_map yt2_1380_fc_pinctrl_map[] = …; static int yt2_1380_fc_pdev_probe(struct platform_device *pdev) { … } static void yt2_1380_fc_pdev_remove(struct platform_device *pdev) { … } static struct platform_driver yt2_1380_fc_pdev_driver = …; static int __init yt2_1380_fc_module_init(void) { … } module_init(…) …; static void __exit yt2_1380_fc_module_exit(void) { … } module_exit(yt2_1380_fc_module_exit); MODULE_ALIAS(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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