// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2020 - 2022, Google LLC * * MAXIM TCPCI based TCPC driver */ #include <linux/interrupt.h> #include <linux/i2c.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/regmap.h> #include <linux/usb/pd.h> #include <linux/usb/tcpci.h> #include <linux/usb/tcpm.h> #include <linux/usb/typec.h> #include "tcpci_maxim.h" #define PD_ACTIVITY_TIMEOUT_MS … #define TCPC_VENDOR_ALERT … #define TCPC_VENDOR_USBSW_CTRL … #define TCPC_VENDOR_USBSW_CTRL_ENABLE_USB_DATA … #define TCPC_VENDOR_USBSW_CTRL_DISABLE_USB_DATA … #define TCPC_RECEIVE_BUFFER_COUNT_OFFSET … #define TCPC_RECEIVE_BUFFER_FRAME_TYPE_OFFSET … #define TCPC_RECEIVE_BUFFER_RX_BYTE_BUF_OFFSET … /* * LongMessage not supported, hence 32 bytes for buf to be read from RECEIVE_BUFFER. * DEVICE_CAPABILITIES_2.LongMessage = 0, the value in READABLE_BYTE_COUNT reg shall be * less than or equal to 31. Since, RECEIVE_BUFFER len = 31 + 1(READABLE_BYTE_COUNT). */ #define TCPC_RECEIVE_BUFFER_LEN … #define MAX_BUCK_BOOST_SID … #define MAX_BUCK_BOOST_OP … #define MAX_BUCK_BOOST_OFF … #define MAX_BUCK_BOOST_SOURCE … #define MAX_BUCK_BOOST_SINK … static const struct regmap_range max_tcpci_tcpci_range[] = …; static const struct regmap_access_table max_tcpci_tcpci_write_table = …; static const struct regmap_config max_tcpci_regmap_config = …; static struct max_tcpci_chip *tdata_to_max_tcpci(struct tcpci_data *tdata) { … } static void max_tcpci_init_regs(struct max_tcpci_chip *chip) { … } static void process_rx(struct max_tcpci_chip *chip, u16 status) { … } static int max_tcpci_set_vbus(struct tcpci *tcpci, struct tcpci_data *tdata, bool source, bool sink) { … } static void process_power_status(struct max_tcpci_chip *chip) { … } static void max_tcpci_frs_sourcing_vbus(struct tcpci *tcpci, struct tcpci_data *tdata) { … } static void process_tx(struct max_tcpci_chip *chip, u16 status) { … } /* Enable USB switches when partner is USB communications capable */ static void max_tcpci_set_partner_usb_comm_capable(struct tcpci *tcpci, struct tcpci_data *data, bool capable) { … } static irqreturn_t _max_tcpci_irq(struct max_tcpci_chip *chip, u16 status) { … } static irqreturn_t max_tcpci_irq(int irq, void *dev_id) { … } static irqreturn_t max_tcpci_isr(int irq, void *dev_id) { … } static int max_tcpci_init_alert(struct max_tcpci_chip *chip, struct i2c_client *client) { … } static int max_tcpci_start_toggling(struct tcpci *tcpci, struct tcpci_data *tdata, enum typec_cc_status cc) { … } static int tcpci_init(struct tcpci *tcpci, struct tcpci_data *data) { … } static void max_tcpci_check_contaminant(struct tcpci *tcpci, struct tcpci_data *tdata) { … } static bool max_tcpci_attempt_vconn_swap_discovery(struct tcpci *tcpci, struct tcpci_data *tdata) { … } static int max_tcpci_probe(struct i2c_client *client) { … } static void max_tcpci_remove(struct i2c_client *client) { … } static const struct i2c_device_id max_tcpci_id[] = …; MODULE_DEVICE_TABLE(i2c, max_tcpci_id); #ifdef CONFIG_OF static const struct of_device_id max_tcpci_of_match[] = …; MODULE_DEVICE_TABLE(of, max_tcpci_of_match); #endif static struct i2c_driver max_tcpci_i2c_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
Codebase Browser
linux