// SPDX-License-Identifier: GPL-2.0+ /* * Driver for Microchip USB251xB USB 2.0 Hi-Speed Hub Controller * Configuration via SMBus. * * Copyright (c) 2017 SKIDATA AG * * This work is based on the USB3503 driver by Dongjin Kim and * a not-accepted patch by Fabien Lahoudere, see: * https://patchwork.kernel.org/patch/9257715/ */ #include <linux/delay.h> #include <linux/gpio/consumer.h> #include <linux/gpio/driver.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/nls.h> #include <linux/of.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> /* Internal Register Set Addresses & Default Values acc. to DS00001692C */ #define USB251XB_ADDR_VENDOR_ID_LSB … #define USB251XB_ADDR_VENDOR_ID_MSB … #define USB251XB_DEF_VENDOR_ID … #define USB251XB_ADDR_PRODUCT_ID_LSB … #define USB251XB_ADDR_PRODUCT_ID_MSB … #define USB251XB_ADDR_DEVICE_ID_LSB … #define USB251XB_ADDR_DEVICE_ID_MSB … #define USB251XB_DEF_DEVICE_ID … #define USB251XB_ADDR_CONFIG_DATA_1 … #define USB251XB_DEF_CONFIG_DATA_1 … #define USB251XB_ADDR_CONFIG_DATA_2 … #define USB251XB_DEF_CONFIG_DATA_2 … #define USB251XB_ADDR_CONFIG_DATA_3 … #define USB251XB_DEF_CONFIG_DATA_3 … #define USB251XB_ADDR_NON_REMOVABLE_DEVICES … #define USB251XB_DEF_NON_REMOVABLE_DEVICES … #define USB251XB_ADDR_PORT_DISABLE_SELF … #define USB251XB_DEF_PORT_DISABLE_SELF … #define USB251XB_ADDR_PORT_DISABLE_BUS … #define USB251XB_DEF_PORT_DISABLE_BUS … #define USB251XB_ADDR_MAX_POWER_SELF … #define USB251XB_DEF_MAX_POWER_SELF … #define USB251XB_ADDR_MAX_POWER_BUS … #define USB251XB_DEF_MAX_POWER_BUS … #define USB251XB_ADDR_MAX_CURRENT_SELF … #define USB251XB_DEF_MAX_CURRENT_SELF … #define USB251XB_ADDR_MAX_CURRENT_BUS … #define USB251XB_DEF_MAX_CURRENT_BUS … #define USB251XB_ADDR_POWER_ON_TIME … #define USB251XB_DEF_POWER_ON_TIME … #define USB251XB_ADDR_LANGUAGE_ID_HIGH … #define USB251XB_ADDR_LANGUAGE_ID_LOW … #define USB251XB_DEF_LANGUAGE_ID … #define USB251XB_STRING_BUFSIZE … #define USB251XB_ADDR_MANUFACTURER_STRING_LEN … #define USB251XB_ADDR_MANUFACTURER_STRING … #define USB251XB_DEF_MANUFACTURER_STRING … #define USB251XB_ADDR_PRODUCT_STRING_LEN … #define USB251XB_ADDR_PRODUCT_STRING … #define USB251XB_ADDR_SERIAL_STRING_LEN … #define USB251XB_ADDR_SERIAL_STRING … #define USB251XB_DEF_SERIAL_STRING … #define USB251XB_ADDR_BATTERY_CHARGING_ENABLE … #define USB251XB_DEF_BATTERY_CHARGING_ENABLE … #define USB251XB_ADDR_BOOST_UP … #define USB251XB_DEF_BOOST_UP … #define USB251XB_ADDR_BOOST_57 … #define USB251XB_DEF_BOOST_57 … #define USB251XB_ADDR_BOOST_14 … #define USB251XB_DEF_BOOST_14 … #define USB251XB_ADDR_PORT_SWAP … #define USB251XB_DEF_PORT_SWAP … #define USB251XB_ADDR_PORT_MAP_12 … #define USB251XB_DEF_PORT_MAP_12 … #define USB251XB_ADDR_PORT_MAP_34 … #define USB251XB_DEF_PORT_MAP_34 … #define USB251XB_ADDR_PORT_MAP_56 … #define USB251XB_DEF_PORT_MAP_56 … #define USB251XB_ADDR_PORT_MAP_7 … #define USB251XB_DEF_PORT_MAP_7 … #define USB251XB_ADDR_STATUS_COMMAND … #define USB251XB_STATUS_COMMAND_SMBUS_DOWN … #define USB251XB_STATUS_COMMAND_RESET … #define USB251XB_STATUS_COMMAND_ATTACH … #define USB251XB_I2C_REG_SZ … #define USB251XB_I2C_WRITE_SZ … #define DRIVER_NAME … #define DRIVER_DESC … struct usb251xb { … }; struct usb251xb_data { … }; static const struct usb251xb_data usb2422_data = …; static const struct usb251xb_data usb2512b_data = …; static const struct usb251xb_data usb2512bi_data = …; static const struct usb251xb_data usb2513b_data = …; static const struct usb251xb_data usb2513bi_data = …; static const struct usb251xb_data usb2514b_data = …; static const struct usb251xb_data usb2514bi_data = …; static const struct usb251xb_data usb2517_data = …; static const struct usb251xb_data usb2517i_data = …; #ifdef CONFIG_GPIOLIB static int usb251xb_check_dev_children(struct device *dev, void *child) { … } static int usb251x_check_gpio_chip(struct usb251xb *hub) { … } #else static int usb251x_check_gpio_chip(struct usb251xb *hub) { return 0; } #endif static void usb251xb_reset(struct usb251xb *hub) { … } static int usb251xb_connect(struct usb251xb *hub) { … } static void usb251xb_get_ports_field(struct usb251xb *hub, const char *prop_name, u8 port_cnt, bool ds_only, u8 *fld) { … } static int usb251xb_get_ofdata(struct usb251xb *hub, const struct usb251xb_data *data) { … } static const struct of_device_id usb251xb_of_match[] = …; MODULE_DEVICE_TABLE(of, usb251xb_of_match); static void usb251xb_regulator_disable_action(void *data) { … } static int usb251xb_probe(struct usb251xb *hub) { … } static int usb251xb_i2c_probe(struct i2c_client *i2c) { … } static int __maybe_unused usb251xb_suspend(struct device *dev) { … } static int __maybe_unused usb251xb_resume(struct device *dev) { … } static SIMPLE_DEV_PM_OPS(usb251xb_pm_ops, usb251xb_suspend, usb251xb_resume); static const struct i2c_device_id usb251xb_id[] = …; MODULE_DEVICE_TABLE(i2c, usb251xb_id); static struct i2c_driver usb251xb_i2c_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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