// SPDX-License-Identifier: GPL-2.0-only /* * tusb1210.c - TUSB1210 USB ULPI PHY driver * * Copyright (C) 2015 Intel Corporation * * Author: Heikki Krogerus <[email protected]> */ #include <linux/module.h> #include <linux/bitfield.h> #include <linux/delay.h> #include <linux/ulpi/driver.h> #include <linux/ulpi/regs.h> #include <linux/gpio/consumer.h> #include <linux/phy/ulpi_phy.h> #include <linux/power_supply.h> #include <linux/property.h> #include <linux/workqueue.h> #define TI_VENDOR_ID … #define TI_DEVICE_TUSB1210 … #define TI_DEVICE_TUSB1211 … #define TUSB1211_POWER_CONTROL … #define TUSB1211_POWER_CONTROL_SET … #define TUSB1211_POWER_CONTROL_CLEAR … #define TUSB1211_POWER_CONTROL_SW_CONTROL … #define TUSB1211_POWER_CONTROL_DET_COMP … #define TUSB1211_POWER_CONTROL_DP_VSRC_EN … #define TUSB1210_VENDOR_SPECIFIC2 … #define TUSB1210_VENDOR_SPECIFIC2_IHSTX_MASK … #define TUSB1210_VENDOR_SPECIFIC2_ZHSDRV_MASK … #define TUSB1210_VENDOR_SPECIFIC2_DP_MASK … #define TUSB1211_VENDOR_SPECIFIC3 … #define TUSB1211_VENDOR_SPECIFIC3_SET … #define TUSB1211_VENDOR_SPECIFIC3_CLEAR … #define TUSB1211_VENDOR_SPECIFIC3_SW_USB_DET … #define TUSB1211_VENDOR_SPECIFIC3_CHGD_IDP_SRC_EN … #define TUSB1210_RESET_TIME_MS … #define TUSB1210_CHG_DET_MAX_RETRIES … /* TUSB1210 charger detection work states */ enum tusb1210_chg_det_state { … }; struct tusb1210 { … }; static int tusb1210_ulpi_write(struct tusb1210 *tusb, u8 reg, u8 val) { … } static int tusb1210_ulpi_read(struct tusb1210 *tusb, u8 reg, u8 *val) { … } static int tusb1210_power_on(struct phy *phy) { … } static int tusb1210_power_off(struct phy *phy) { … } static int tusb1210_set_mode(struct phy *phy, enum phy_mode mode, int submode) { … } #ifdef CONFIG_POWER_SUPPLY static const char * const tusb1210_chg_det_states[] = …; static void tusb1210_reset(struct tusb1210 *tusb) { … } static void tusb1210_chg_det_set_type(struct tusb1210 *tusb, enum power_supply_usb_type type) { … } static void tusb1210_chg_det_set_state(struct tusb1210 *tusb, enum tusb1210_chg_det_state new_state, int delay_ms) { … } static void tusb1210_chg_det_handle_ulpi_error(struct tusb1210 *tusb) { … } /* * Boards using a TUSB121x for charger-detection have 3 power_supply class devs: * * tusb1211-charger-detect(1) -> charger -> fuel-gauge * * To determine if an USB charger is connected to the board, the online prop of * the charger psy needs to be read. Since the tusb1211-charger-detect psy is * the start of the supplier -> supplied-to chain, power_supply_am_i_supplied() * cannot be used here. * * Instead, below is a list of the power_supply names of known chargers for * these boards and the charger psy is looked up by name from this list. * * (1) modelling the external USB charger */ static const char * const tusb1210_chargers[] = …; static bool tusb1210_get_online(struct tusb1210 *tusb) { … } static void tusb1210_chg_det_work(struct work_struct *work) { … } static int tusb1210_psy_notifier(struct notifier_block *nb, unsigned long event, void *ptr) { … } static int tusb1210_psy_get_prop(struct power_supply *psy, enum power_supply_property psp, union power_supply_propval *val) { … } static const enum power_supply_property tusb1210_psy_props[] = …; static const struct power_supply_desc tusb1210_psy_desc = …; /* Setup charger detection if requested, on errors continue without chg-det */ static void tusb1210_probe_charger_detect(struct tusb1210 *tusb) { … } static void tusb1210_remove_charger_detect(struct tusb1210 *tusb) { … } #else static void tusb1210_probe_charger_detect(struct tusb1210 *tusb) { } static void tusb1210_remove_charger_detect(struct tusb1210 *tusb) { } #endif static const struct phy_ops phy_ops = …; static int tusb1210_probe(struct ulpi *ulpi) { … } static void tusb1210_remove(struct ulpi *ulpi) { … } static const struct ulpi_device_id tusb1210_ulpi_id[] = …; MODULE_DEVICE_TABLE(ulpi, tusb1210_ulpi_id); static struct ulpi_driver tusb1210_driver = …; module_ulpi_driver(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …;
Codebase Browser
linux