source "drivers/staging/vc04_services/Kconfig"
-source "drivers/staging/typec/Kconfig"
-
source "drivers/staging/vboxvideo/Kconfig"
source "drivers/staging/pi433/Kconfig"
# Makefile for staging directory
obj-y += media/
-obj-y += typec/
obj-$(CONFIG_PRISM2_USB) += wlan-ng/
obj-$(CONFIG_COMEDI) += comedi/
obj-$(CONFIG_FB_OLPC_DCON) += olpc_dcon/
+++ /dev/null
-menu "USB Power Delivery and Type-C drivers"
-
-if TYPEC_TCPM
-
-config TYPEC_TCPCI
- tristate "Type-C Port Controller Interface driver"
- depends on I2C
- select REGMAP_I2C
- help
- Type-C Port Controller driver for TCPCI-compliant controller.
-
-config TYPEC_RT1711H
- tristate "Richtek RT1711H Type-C chip driver"
- select TYPEC_TCPCI
- help
- Richtek RT1711H Type-C chip driver that works with
- Type-C Port Controller Manager to provide USB PD and USB
- Type-C functionalities.
-
-endif
-
-endmenu
+++ /dev/null
-obj-$(CONFIG_TYPEC_TCPCI) += tcpci.o
-obj-$(CONFIG_TYPEC_RT1711H) += tcpci_rt1711h.o
+++ /dev/null
-tcpci:
-- Test with real hardware
-
-Please send patches to Guenter Roeck <linux@roeck-us.net> and copy
-Heikki Krogerus <heikki.krogerus@linux.intel.com>.
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright 2015-2017 Google, Inc
- *
- * USB Type-C Port Controller Interface.
- */
-
-#include <linux/delay.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/property.h>
-#include <linux/regmap.h>
-#include <linux/usb/pd.h>
-#include <linux/usb/tcpm.h>
-#include <linux/usb/typec.h>
-
-#include "tcpci.h"
-
-#define PD_RETRY_COUNT 3
-
-struct tcpci {
- struct device *dev;
-
- struct tcpm_port *port;
-
- struct regmap *regmap;
-
- bool controls_vbus;
-
- struct tcpc_dev tcpc;
- struct tcpci_data *data;
-};
-
-struct tcpci_chip {
- struct tcpci *tcpci;
- struct tcpci_data data;
-};
-
-static inline struct tcpci *tcpc_to_tcpci(struct tcpc_dev *tcpc)
-{
- return container_of(tcpc, struct tcpci, tcpc);
-}
-
-static int tcpci_read16(struct tcpci *tcpci, unsigned int reg, u16 *val)
-{
- return regmap_raw_read(tcpci->regmap, reg, val, sizeof(u16));
-}
-
-static int tcpci_write16(struct tcpci *tcpci, unsigned int reg, u16 val)
-{
- return regmap_raw_write(tcpci->regmap, reg, &val, sizeof(u16));
-}
-
-static int tcpci_set_cc(struct tcpc_dev *tcpc, enum typec_cc_status cc)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- unsigned int reg;
- int ret;
-
- switch (cc) {
- case TYPEC_CC_RA:
- reg = (TCPC_ROLE_CTRL_CC_RA << TCPC_ROLE_CTRL_CC1_SHIFT) |
- (TCPC_ROLE_CTRL_CC_RA << TCPC_ROLE_CTRL_CC2_SHIFT);
- break;
- case TYPEC_CC_RD:
- reg = (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) |
- (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT);
- break;
- case TYPEC_CC_RP_DEF:
- reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) |
- (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) |
- (TCPC_ROLE_CTRL_RP_VAL_DEF <<
- TCPC_ROLE_CTRL_RP_VAL_SHIFT);
- break;
- case TYPEC_CC_RP_1_5:
- reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) |
- (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) |
- (TCPC_ROLE_CTRL_RP_VAL_1_5 <<
- TCPC_ROLE_CTRL_RP_VAL_SHIFT);
- break;
- case TYPEC_CC_RP_3_0:
- reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) |
- (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) |
- (TCPC_ROLE_CTRL_RP_VAL_3_0 <<
- TCPC_ROLE_CTRL_RP_VAL_SHIFT);
- break;
- case TYPEC_CC_OPEN:
- default:
- reg = (TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC1_SHIFT) |
- (TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC2_SHIFT);
- break;
- }
-
- ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static int tcpci_start_drp_toggling(struct tcpc_dev *tcpc,
- enum typec_cc_status cc)
-{
- int ret;
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- unsigned int reg = TCPC_ROLE_CTRL_DRP;
-
- /* Handle vendor drp toggling */
- if (tcpci->data->start_drp_toggling) {
- ret = tcpci->data->start_drp_toggling(tcpci, tcpci->data, cc);
- if (ret < 0)
- return ret;
- }
-
- switch (cc) {
- default:
- case TYPEC_CC_RP_DEF:
- reg |= (TCPC_ROLE_CTRL_RP_VAL_DEF <<
- TCPC_ROLE_CTRL_RP_VAL_SHIFT);
- break;
- case TYPEC_CC_RP_1_5:
- reg |= (TCPC_ROLE_CTRL_RP_VAL_1_5 <<
- TCPC_ROLE_CTRL_RP_VAL_SHIFT);
- break;
- case TYPEC_CC_RP_3_0:
- reg |= (TCPC_ROLE_CTRL_RP_VAL_3_0 <<
- TCPC_ROLE_CTRL_RP_VAL_SHIFT);
- break;
- }
-
- if (cc == TYPEC_CC_RD)
- reg |= (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) |
- (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT);
- else
- reg |= (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) |
- (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT);
- ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg);
- if (ret < 0)
- return ret;
- return regmap_write(tcpci->regmap, TCPC_COMMAND,
- TCPC_CMD_LOOK4CONNECTION);
-}
-
-static enum typec_cc_status tcpci_to_typec_cc(unsigned int cc, bool sink)
-{
- switch (cc) {
- case 0x1:
- return sink ? TYPEC_CC_RP_DEF : TYPEC_CC_RA;
- case 0x2:
- return sink ? TYPEC_CC_RP_1_5 : TYPEC_CC_RD;
- case 0x3:
- if (sink)
- return TYPEC_CC_RP_3_0;
- /* fall through */
- case 0x0:
- default:
- return TYPEC_CC_OPEN;
- }
-}
-
-static int tcpci_get_cc(struct tcpc_dev *tcpc,
- enum typec_cc_status *cc1, enum typec_cc_status *cc2)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- unsigned int reg;
- int ret;
-
- ret = regmap_read(tcpci->regmap, TCPC_CC_STATUS, ®);
- if (ret < 0)
- return ret;
-
- *cc1 = tcpci_to_typec_cc((reg >> TCPC_CC_STATUS_CC1_SHIFT) &
- TCPC_CC_STATUS_CC1_MASK,
- reg & TCPC_CC_STATUS_TERM);
- *cc2 = tcpci_to_typec_cc((reg >> TCPC_CC_STATUS_CC2_SHIFT) &
- TCPC_CC_STATUS_CC2_MASK,
- reg & TCPC_CC_STATUS_TERM);
-
- return 0;
-}
-
-static int tcpci_set_polarity(struct tcpc_dev *tcpc,
- enum typec_cc_polarity polarity)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- unsigned int reg;
- int ret;
-
- /* Keep the disconnect cc line open */
- ret = regmap_read(tcpci->regmap, TCPC_ROLE_CTRL, ®);
- if (ret < 0)
- return ret;
-
- if (polarity == TYPEC_POLARITY_CC2)
- reg |= TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC1_SHIFT;
- else
- reg |= TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC2_SHIFT;
- ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg);
- if (ret < 0)
- return ret;
-
- return regmap_write(tcpci->regmap, TCPC_TCPC_CTRL,
- (polarity == TYPEC_POLARITY_CC2) ?
- TCPC_TCPC_CTRL_ORIENTATION : 0);
-}
-
-static int tcpci_set_vconn(struct tcpc_dev *tcpc, bool enable)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- int ret;
-
- /* Handle vendor set vconn */
- if (tcpci->data->set_vconn) {
- ret = tcpci->data->set_vconn(tcpci, tcpci->data, enable);
- if (ret < 0)
- return ret;
- }
-
- return regmap_update_bits(tcpci->regmap, TCPC_POWER_CTRL,
- TCPC_POWER_CTRL_VCONN_ENABLE,
- enable ? TCPC_POWER_CTRL_VCONN_ENABLE : 0);
-}
-
-static int tcpci_set_roles(struct tcpc_dev *tcpc, bool attached,
- enum typec_role role, enum typec_data_role data)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- unsigned int reg;
- int ret;
-
- reg = PD_REV20 << TCPC_MSG_HDR_INFO_REV_SHIFT;
- if (role == TYPEC_SOURCE)
- reg |= TCPC_MSG_HDR_INFO_PWR_ROLE;
- if (data == TYPEC_HOST)
- reg |= TCPC_MSG_HDR_INFO_DATA_ROLE;
- ret = regmap_write(tcpci->regmap, TCPC_MSG_HDR_INFO, reg);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static int tcpci_set_pd_rx(struct tcpc_dev *tcpc, bool enable)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- unsigned int reg = 0;
- int ret;
-
- if (enable)
- reg = TCPC_RX_DETECT_SOP | TCPC_RX_DETECT_HARD_RESET;
- ret = regmap_write(tcpci->regmap, TCPC_RX_DETECT, reg);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static int tcpci_get_vbus(struct tcpc_dev *tcpc)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- unsigned int reg;
- int ret;
-
- ret = regmap_read(tcpci->regmap, TCPC_POWER_STATUS, ®);
- if (ret < 0)
- return ret;
-
- return !!(reg & TCPC_POWER_STATUS_VBUS_PRES);
-}
-
-static int tcpci_set_vbus(struct tcpc_dev *tcpc, bool source, bool sink)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- int ret;
-
- /* Disable both source and sink first before enabling anything */
-
- if (!source) {
- ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
- TCPC_CMD_DISABLE_SRC_VBUS);
- if (ret < 0)
- return ret;
- }
-
- if (!sink) {
- ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
- TCPC_CMD_DISABLE_SINK_VBUS);
- if (ret < 0)
- return ret;
- }
-
- if (source) {
- ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
- TCPC_CMD_SRC_VBUS_DEFAULT);
- if (ret < 0)
- return ret;
- }
-
- if (sink) {
- ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
- TCPC_CMD_SINK_VBUS);
- if (ret < 0)
- return ret;
- }
-
- return 0;
-}
-
-static int tcpci_pd_transmit(struct tcpc_dev *tcpc,
- enum tcpm_transmit_type type,
- const struct pd_message *msg)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- u16 header = msg ? le16_to_cpu(msg->header) : 0;
- unsigned int reg, cnt;
- int ret;
-
- cnt = msg ? pd_header_cnt(header) * 4 : 0;
- ret = regmap_write(tcpci->regmap, TCPC_TX_BYTE_CNT, cnt + 2);
- if (ret < 0)
- return ret;
-
- ret = tcpci_write16(tcpci, TCPC_TX_HDR, header);
- if (ret < 0)
- return ret;
-
- if (cnt > 0) {
- ret = regmap_raw_write(tcpci->regmap, TCPC_TX_DATA,
- &msg->payload, cnt);
- if (ret < 0)
- return ret;
- }
-
- reg = (PD_RETRY_COUNT << TCPC_TRANSMIT_RETRY_SHIFT) |
- (type << TCPC_TRANSMIT_TYPE_SHIFT);
- ret = regmap_write(tcpci->regmap, TCPC_TRANSMIT, reg);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static int tcpci_init(struct tcpc_dev *tcpc)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- unsigned long timeout = jiffies + msecs_to_jiffies(2000); /* XXX */
- unsigned int reg;
- int ret;
-
- while (time_before_eq(jiffies, timeout)) {
- ret = regmap_read(tcpci->regmap, TCPC_POWER_STATUS, ®);
- if (ret < 0)
- return ret;
- if (!(reg & TCPC_POWER_STATUS_UNINIT))
- break;
- usleep_range(10000, 20000);
- }
- if (time_after(jiffies, timeout))
- return -ETIMEDOUT;
-
- /* Handle vendor init */
- if (tcpci->data->init) {
- ret = tcpci->data->init(tcpci, tcpci->data);
- if (ret < 0)
- return ret;
- }
-
- /* Clear all events */
- ret = tcpci_write16(tcpci, TCPC_ALERT, 0xffff);
- if (ret < 0)
- return ret;
-
- if (tcpci->controls_vbus)
- reg = TCPC_POWER_STATUS_VBUS_PRES;
- else
- reg = 0;
- ret = regmap_write(tcpci->regmap, TCPC_POWER_STATUS_MASK, reg);
- if (ret < 0)
- return ret;
-
- /* Enable Vbus detection */
- ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
- TCPC_CMD_ENABLE_VBUS_DETECT);
- if (ret < 0)
- return ret;
-
- reg = TCPC_ALERT_TX_SUCCESS | TCPC_ALERT_TX_FAILED |
- TCPC_ALERT_TX_DISCARDED | TCPC_ALERT_RX_STATUS |
- TCPC_ALERT_RX_HARD_RST | TCPC_ALERT_CC_STATUS;
- if (tcpci->controls_vbus)
- reg |= TCPC_ALERT_POWER_STATUS;
- return tcpci_write16(tcpci, TCPC_ALERT_MASK, reg);
-}
-
-irqreturn_t tcpci_irq(struct tcpci *tcpci)
-{
- u16 status;
-
- tcpci_read16(tcpci, TCPC_ALERT, &status);
-
- /*
- * Clear alert status for everything except RX_STATUS, which shouldn't
- * be cleared until we have successfully retrieved message.
- */
- if (status & ~TCPC_ALERT_RX_STATUS)
- tcpci_write16(tcpci, TCPC_ALERT,
- status & ~TCPC_ALERT_RX_STATUS);
-
- if (status & TCPC_ALERT_CC_STATUS)
- tcpm_cc_change(tcpci->port);
-
- if (status & TCPC_ALERT_POWER_STATUS) {
- unsigned int reg;
-
- regmap_read(tcpci->regmap, TCPC_POWER_STATUS_MASK, ®);
-
- /*
- * If power status mask has been reset, then the TCPC
- * has reset.
- */
- if (reg == 0xff)
- tcpm_tcpc_reset(tcpci->port);
- else
- tcpm_vbus_change(tcpci->port);
- }
-
- if (status & TCPC_ALERT_RX_STATUS) {
- struct pd_message msg;
- unsigned int cnt;
- u16 header;
-
- regmap_read(tcpci->regmap, TCPC_RX_BYTE_CNT, &cnt);
-
- tcpci_read16(tcpci, TCPC_RX_HDR, &header);
- msg.header = cpu_to_le16(header);
-
- if (WARN_ON(cnt > sizeof(msg.payload)))
- cnt = sizeof(msg.payload);
-
- if (cnt > 0)
- regmap_raw_read(tcpci->regmap, TCPC_RX_DATA,
- &msg.payload, cnt);
-
- /* Read complete, clear RX status alert bit */
- tcpci_write16(tcpci, TCPC_ALERT, TCPC_ALERT_RX_STATUS);
-
- tcpm_pd_receive(tcpci->port, &msg);
- }
-
- if (status & TCPC_ALERT_RX_HARD_RST)
- tcpm_pd_hard_reset(tcpci->port);
-
- if (status & TCPC_ALERT_TX_SUCCESS)
- tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_SUCCESS);
- else if (status & TCPC_ALERT_TX_DISCARDED)
- tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_DISCARDED);
- else if (status & TCPC_ALERT_TX_FAILED)
- tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_FAILED);
-
- return IRQ_HANDLED;
-}
-EXPORT_SYMBOL_GPL(tcpci_irq);
-
-static irqreturn_t _tcpci_irq(int irq, void *dev_id)
-{
- struct tcpci_chip *chip = dev_id;
-
- return tcpci_irq(chip->tcpci);
-}
-
-static const struct regmap_config tcpci_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8,
-
- .max_register = 0x7F, /* 0x80 .. 0xFF are vendor defined */
-};
-
-static int tcpci_parse_config(struct tcpci *tcpci)
-{
- tcpci->controls_vbus = true; /* XXX */
-
- tcpci->tcpc.fwnode = device_get_named_child_node(tcpci->dev,
- "connector");
- if (!tcpci->tcpc.fwnode) {
- dev_err(tcpci->dev, "Can't find connector node.\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data)
-{
- struct tcpci *tcpci;
- int err;
-
- tcpci = devm_kzalloc(dev, sizeof(*tcpci), GFP_KERNEL);
- if (!tcpci)
- return ERR_PTR(-ENOMEM);
-
- tcpci->dev = dev;
- tcpci->data = data;
- tcpci->regmap = data->regmap;
-
- tcpci->tcpc.init = tcpci_init;
- tcpci->tcpc.get_vbus = tcpci_get_vbus;
- tcpci->tcpc.set_vbus = tcpci_set_vbus;
- tcpci->tcpc.set_cc = tcpci_set_cc;
- tcpci->tcpc.get_cc = tcpci_get_cc;
- tcpci->tcpc.set_polarity = tcpci_set_polarity;
- tcpci->tcpc.set_vconn = tcpci_set_vconn;
- tcpci->tcpc.start_drp_toggling = tcpci_start_drp_toggling;
-
- tcpci->tcpc.set_pd_rx = tcpci_set_pd_rx;
- tcpci->tcpc.set_roles = tcpci_set_roles;
- tcpci->tcpc.pd_transmit = tcpci_pd_transmit;
-
- err = tcpci_parse_config(tcpci);
- if (err < 0)
- return ERR_PTR(err);
-
- tcpci->port = tcpm_register_port(tcpci->dev, &tcpci->tcpc);
- if (IS_ERR(tcpci->port))
- return ERR_CAST(tcpci->port);
-
- return tcpci;
-}
-EXPORT_SYMBOL_GPL(tcpci_register_port);
-
-void tcpci_unregister_port(struct tcpci *tcpci)
-{
- tcpm_unregister_port(tcpci->port);
-}
-EXPORT_SYMBOL_GPL(tcpci_unregister_port);
-
-static int tcpci_probe(struct i2c_client *client,
- const struct i2c_device_id *i2c_id)
-{
- struct tcpci_chip *chip;
- int err;
- u16 val = 0;
-
- chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
- if (!chip)
- return -ENOMEM;
-
- chip->data.regmap = devm_regmap_init_i2c(client, &tcpci_regmap_config);
- if (IS_ERR(chip->data.regmap))
- return PTR_ERR(chip->data.regmap);
-
- i2c_set_clientdata(client, chip);
-
- /* Disable chip interrupts before requesting irq */
- err = regmap_raw_write(chip->data.regmap, TCPC_ALERT_MASK, &val,
- sizeof(u16));
- if (err < 0)
- return err;
-
- chip->tcpci = tcpci_register_port(&client->dev, &chip->data);
- if (IS_ERR(chip->tcpci))
- return PTR_ERR(chip->tcpci);
-
- err = devm_request_threaded_irq(&client->dev, client->irq, NULL,
- _tcpci_irq,
- IRQF_ONESHOT | IRQF_TRIGGER_LOW,
- dev_name(&client->dev), chip);
- if (err < 0) {
- tcpci_unregister_port(chip->tcpci);
- return err;
- }
-
- return 0;
-}
-
-static int tcpci_remove(struct i2c_client *client)
-{
- struct tcpci_chip *chip = i2c_get_clientdata(client);
-
- tcpci_unregister_port(chip->tcpci);
-
- return 0;
-}
-
-static const struct i2c_device_id tcpci_id[] = {
- { "tcpci", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, tcpci_id);
-
-#ifdef CONFIG_OF
-static const struct of_device_id tcpci_of_match[] = {
- { .compatible = "nxp,ptn5110", },
- {},
-};
-MODULE_DEVICE_TABLE(of, tcpci_of_match);
-#endif
-
-static struct i2c_driver tcpci_i2c_driver = {
- .driver = {
- .name = "tcpci",
- .of_match_table = of_match_ptr(tcpci_of_match),
- },
- .probe = tcpci_probe,
- .remove = tcpci_remove,
- .id_table = tcpci_id,
-};
-module_i2c_driver(tcpci_i2c_driver);
-
-MODULE_DESCRIPTION("USB Type-C Port Controller Interface driver");
-MODULE_LICENSE("GPL");
+++ /dev/null
-/* SPDX-License-Identifier: GPL-2.0+ */
-/*
- * Copyright 2015-2017 Google, Inc
- *
- * USB Type-C Port Controller Interface.
- */
-
-#ifndef __LINUX_USB_TCPCI_H
-#define __LINUX_USB_TCPCI_H
-
-#define TCPC_VENDOR_ID 0x0
-#define TCPC_PRODUCT_ID 0x2
-#define TCPC_BCD_DEV 0x4
-#define TCPC_TC_REV 0x6
-#define TCPC_PD_REV 0x8
-#define TCPC_PD_INT_REV 0xa
-
-#define TCPC_ALERT 0x10
-#define TCPC_ALERT_VBUS_DISCNCT BIT(11)
-#define TCPC_ALERT_RX_BUF_OVF BIT(10)
-#define TCPC_ALERT_FAULT BIT(9)
-#define TCPC_ALERT_V_ALARM_LO BIT(8)
-#define TCPC_ALERT_V_ALARM_HI BIT(7)
-#define TCPC_ALERT_TX_SUCCESS BIT(6)
-#define TCPC_ALERT_TX_DISCARDED BIT(5)
-#define TCPC_ALERT_TX_FAILED BIT(4)
-#define TCPC_ALERT_RX_HARD_RST BIT(3)
-#define TCPC_ALERT_RX_STATUS BIT(2)
-#define TCPC_ALERT_POWER_STATUS BIT(1)
-#define TCPC_ALERT_CC_STATUS BIT(0)
-
-#define TCPC_ALERT_MASK 0x12
-#define TCPC_POWER_STATUS_MASK 0x14
-#define TCPC_FAULT_STATUS_MASK 0x15
-#define TCPC_CONFIG_STD_OUTPUT 0x18
-
-#define TCPC_TCPC_CTRL 0x19
-#define TCPC_TCPC_CTRL_ORIENTATION BIT(0)
-
-#define TCPC_ROLE_CTRL 0x1a
-#define TCPC_ROLE_CTRL_DRP BIT(6)
-#define TCPC_ROLE_CTRL_RP_VAL_SHIFT 4
-#define TCPC_ROLE_CTRL_RP_VAL_MASK 0x3
-#define TCPC_ROLE_CTRL_RP_VAL_DEF 0x0
-#define TCPC_ROLE_CTRL_RP_VAL_1_5 0x1
-#define TCPC_ROLE_CTRL_RP_VAL_3_0 0x2
-#define TCPC_ROLE_CTRL_CC2_SHIFT 2
-#define TCPC_ROLE_CTRL_CC2_MASK 0x3
-#define TCPC_ROLE_CTRL_CC1_SHIFT 0
-#define TCPC_ROLE_CTRL_CC1_MASK 0x3
-#define TCPC_ROLE_CTRL_CC_RA 0x0
-#define TCPC_ROLE_CTRL_CC_RP 0x1
-#define TCPC_ROLE_CTRL_CC_RD 0x2
-#define TCPC_ROLE_CTRL_CC_OPEN 0x3
-
-#define TCPC_FAULT_CTRL 0x1b
-
-#define TCPC_POWER_CTRL 0x1c
-#define TCPC_POWER_CTRL_VCONN_ENABLE BIT(0)
-
-#define TCPC_CC_STATUS 0x1d
-#define TCPC_CC_STATUS_TOGGLING BIT(5)
-#define TCPC_CC_STATUS_TERM BIT(4)
-#define TCPC_CC_STATUS_CC2_SHIFT 2
-#define TCPC_CC_STATUS_CC2_MASK 0x3
-#define TCPC_CC_STATUS_CC1_SHIFT 0
-#define TCPC_CC_STATUS_CC1_MASK 0x3
-
-#define TCPC_POWER_STATUS 0x1e
-#define TCPC_POWER_STATUS_UNINIT BIT(6)
-#define TCPC_POWER_STATUS_VBUS_DET BIT(3)
-#define TCPC_POWER_STATUS_VBUS_PRES BIT(2)
-
-#define TCPC_FAULT_STATUS 0x1f
-
-#define TCPC_COMMAND 0x23
-#define TCPC_CMD_WAKE_I2C 0x11
-#define TCPC_CMD_DISABLE_VBUS_DETECT 0x22
-#define TCPC_CMD_ENABLE_VBUS_DETECT 0x33
-#define TCPC_CMD_DISABLE_SINK_VBUS 0x44
-#define TCPC_CMD_SINK_VBUS 0x55
-#define TCPC_CMD_DISABLE_SRC_VBUS 0x66
-#define TCPC_CMD_SRC_VBUS_DEFAULT 0x77
-#define TCPC_CMD_SRC_VBUS_HIGH 0x88
-#define TCPC_CMD_LOOK4CONNECTION 0x99
-#define TCPC_CMD_RXONEMORE 0xAA
-#define TCPC_CMD_I2C_IDLE 0xFF
-
-#define TCPC_DEV_CAP_1 0x24
-#define TCPC_DEV_CAP_2 0x26
-#define TCPC_STD_INPUT_CAP 0x28
-#define TCPC_STD_OUTPUT_CAP 0x29
-
-#define TCPC_MSG_HDR_INFO 0x2e
-#define TCPC_MSG_HDR_INFO_DATA_ROLE BIT(3)
-#define TCPC_MSG_HDR_INFO_PWR_ROLE BIT(0)
-#define TCPC_MSG_HDR_INFO_REV_SHIFT 1
-#define TCPC_MSG_HDR_INFO_REV_MASK 0x3
-
-#define TCPC_RX_DETECT 0x2f
-#define TCPC_RX_DETECT_HARD_RESET BIT(5)
-#define TCPC_RX_DETECT_SOP BIT(0)
-
-#define TCPC_RX_BYTE_CNT 0x30
-#define TCPC_RX_BUF_FRAME_TYPE 0x31
-#define TCPC_RX_HDR 0x32
-#define TCPC_RX_DATA 0x34 /* through 0x4f */
-
-#define TCPC_TRANSMIT 0x50
-#define TCPC_TRANSMIT_RETRY_SHIFT 4
-#define TCPC_TRANSMIT_RETRY_MASK 0x3
-#define TCPC_TRANSMIT_TYPE_SHIFT 0
-#define TCPC_TRANSMIT_TYPE_MASK 0x7
-
-#define TCPC_TX_BYTE_CNT 0x51
-#define TCPC_TX_HDR 0x52
-#define TCPC_TX_DATA 0x54 /* through 0x6f */
-
-#define TCPC_VBUS_VOLTAGE 0x70
-#define TCPC_VBUS_SINK_DISCONNECT_THRESH 0x72
-#define TCPC_VBUS_STOP_DISCHARGE_THRESH 0x74
-#define TCPC_VBUS_VOLTAGE_ALARM_HI_CFG 0x76
-#define TCPC_VBUS_VOLTAGE_ALARM_LO_CFG 0x78
-
-struct tcpci;
-struct tcpci_data {
- struct regmap *regmap;
- int (*init)(struct tcpci *tcpci, struct tcpci_data *data);
- int (*set_vconn)(struct tcpci *tcpci, struct tcpci_data *data,
- bool enable);
- int (*start_drp_toggling)(struct tcpci *tcpci, struct tcpci_data *data,
- enum typec_cc_status cc);
-};
-
-struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data);
-void tcpci_unregister_port(struct tcpci *tcpci);
-irqreturn_t tcpci_irq(struct tcpci *tcpci);
-
-#endif /* __LINUX_USB_TCPCI_H */
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2018, Richtek Technology Corporation
- *
- * Richtek RT1711H Type-C Chip Driver
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/gpio/consumer.h>
-#include <linux/usb/tcpm.h>
-#include <linux/regmap.h>
-#include "tcpci.h"
-
-#define RT1711H_VID 0x29CF
-#define RT1711H_PID 0x1711
-
-#define RT1711H_RTCTRL8 0x9B
-
-/* Autoidle timeout = (tout * 2 + 1) * 6.4ms */
-#define RT1711H_RTCTRL8_SET(ck300, ship_off, auto_idle, tout) \
- (((ck300) << 7) | ((ship_off) << 5) | \
- ((auto_idle) << 3) | ((tout) & 0x07))
-
-#define RT1711H_RTCTRL11 0x9E
-
-/* I2C timeout = (tout + 1) * 12.5ms */
-#define RT1711H_RTCTRL11_SET(en, tout) \
- (((en) << 7) | ((tout) & 0x0F))
-
-#define RT1711H_RTCTRL13 0xA0
-#define RT1711H_RTCTRL14 0xA1
-#define RT1711H_RTCTRL15 0xA2
-#define RT1711H_RTCTRL16 0xA3
-
-struct rt1711h_chip {
- struct tcpci_data data;
- struct tcpci *tcpci;
- struct device *dev;
-};
-
-static int rt1711h_read16(struct rt1711h_chip *chip, unsigned int reg, u16 *val)
-{
- return regmap_raw_read(chip->data.regmap, reg, val, sizeof(u16));
-}
-
-static int rt1711h_write16(struct rt1711h_chip *chip, unsigned int reg, u16 val)
-{
- return regmap_raw_write(chip->data.regmap, reg, &val, sizeof(u16));
-}
-
-static int rt1711h_read8(struct rt1711h_chip *chip, unsigned int reg, u8 *val)
-{
- return regmap_raw_read(chip->data.regmap, reg, val, sizeof(u8));
-}
-
-static int rt1711h_write8(struct rt1711h_chip *chip, unsigned int reg, u8 val)
-{
- return regmap_raw_write(chip->data.regmap, reg, &val, sizeof(u8));
-}
-
-static const struct regmap_config rt1711h_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8,
-
- .max_register = 0xFF, /* 0x80 .. 0xFF are vendor defined */
-};
-
-static struct rt1711h_chip *tdata_to_rt1711h(struct tcpci_data *tdata)
-{
- return container_of(tdata, struct rt1711h_chip, data);
-}
-
-static int rt1711h_init(struct tcpci *tcpci, struct tcpci_data *tdata)
-{
- int ret;
- struct rt1711h_chip *chip = tdata_to_rt1711h(tdata);
-
- /* CK 300K from 320K, shipping off, auto_idle enable, tout = 32ms */
- ret = rt1711h_write8(chip, RT1711H_RTCTRL8,
- RT1711H_RTCTRL8_SET(0, 1, 1, 2));
- if (ret < 0)
- return ret;
-
- /* I2C reset : (val + 1) * 12.5ms */
- ret = rt1711h_write8(chip, RT1711H_RTCTRL11,
- RT1711H_RTCTRL11_SET(1, 0x0F));
- if (ret < 0)
- return ret;
-
- /* tTCPCfilter : (26.7 * val) us */
- ret = rt1711h_write8(chip, RT1711H_RTCTRL14, 0x0F);
- if (ret < 0)
- return ret;
-
- /* tDRP : (51.2 + 6.4 * val) ms */
- ret = rt1711h_write8(chip, RT1711H_RTCTRL15, 0x04);
- if (ret < 0)
- return ret;
-
- /* dcSRC.DRP : 33% */
- return rt1711h_write16(chip, RT1711H_RTCTRL16, 330);
-}
-
-static int rt1711h_set_vconn(struct tcpci *tcpci, struct tcpci_data *tdata,
- bool enable)
-{
- struct rt1711h_chip *chip = tdata_to_rt1711h(tdata);
-
- return rt1711h_write8(chip, RT1711H_RTCTRL8,
- RT1711H_RTCTRL8_SET(0, 1, !enable, 2));
-}
-
-static int rt1711h_start_drp_toggling(struct tcpci *tcpci,
- struct tcpci_data *tdata,
- enum typec_cc_status cc)
-{
- struct rt1711h_chip *chip = tdata_to_rt1711h(tdata);
- int ret;
- unsigned int reg = 0;
-
- switch (cc) {
- default:
- case TYPEC_CC_RP_DEF:
- reg |= (TCPC_ROLE_CTRL_RP_VAL_DEF <<
- TCPC_ROLE_CTRL_RP_VAL_SHIFT);
- break;
- case TYPEC_CC_RP_1_5:
- reg |= (TCPC_ROLE_CTRL_RP_VAL_1_5 <<
- TCPC_ROLE_CTRL_RP_VAL_SHIFT);
- break;
- case TYPEC_CC_RP_3_0:
- reg |= (TCPC_ROLE_CTRL_RP_VAL_3_0 <<
- TCPC_ROLE_CTRL_RP_VAL_SHIFT);
- break;
- }
-
- if (cc == TYPEC_CC_RD)
- reg |= (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) |
- (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT);
- else
- reg |= (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) |
- (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT);
-
- ret = rt1711h_write8(chip, TCPC_ROLE_CTRL, reg);
- if (ret < 0)
- return ret;
- usleep_range(500, 1000);
-
- return 0;
-}
-
-static irqreturn_t rt1711h_irq(int irq, void *dev_id)
-{
- int ret;
- u16 alert;
- u8 status;
- struct rt1711h_chip *chip = dev_id;
-
- if (!chip->tcpci)
- return IRQ_HANDLED;
-
- ret = rt1711h_read16(chip, TCPC_ALERT, &alert);
- if (ret < 0)
- goto out;
-
- if (alert & TCPC_ALERT_CC_STATUS) {
- ret = rt1711h_read8(chip, TCPC_CC_STATUS, &status);
- if (ret < 0)
- goto out;
- /* Clear cc change event triggered by starting toggling */
- if (status & TCPC_CC_STATUS_TOGGLING)
- rt1711h_write8(chip, TCPC_ALERT, TCPC_ALERT_CC_STATUS);
- }
-
-out:
- return tcpci_irq(chip->tcpci);
-}
-
-static int rt1711h_init_alert(struct rt1711h_chip *chip,
- struct i2c_client *client)
-{
- int ret;
-
- /* Disable chip interrupts before requesting irq */
- ret = rt1711h_write16(chip, TCPC_ALERT_MASK, 0);
- if (ret < 0)
- return ret;
-
- ret = devm_request_threaded_irq(chip->dev, client->irq, NULL,
- rt1711h_irq,
- IRQF_ONESHOT | IRQF_TRIGGER_LOW,
- dev_name(chip->dev), chip);
- if (ret < 0)
- return ret;
- enable_irq_wake(client->irq);
- return 0;
-}
-
-static int rt1711h_sw_reset(struct rt1711h_chip *chip)
-{
- int ret;
-
- ret = rt1711h_write8(chip, RT1711H_RTCTRL13, 0x01);
- if (ret < 0)
- return ret;
-
- usleep_range(1000, 2000);
- return 0;
-}
-
-static int rt1711h_check_revision(struct i2c_client *i2c)
-{
- int ret;
-
- ret = i2c_smbus_read_word_data(i2c, TCPC_VENDOR_ID);
- if (ret < 0)
- return ret;
- if (ret != RT1711H_VID) {
- dev_err(&i2c->dev, "vid is not correct, 0x%04x\n", ret);
- return -ENODEV;
- }
- ret = i2c_smbus_read_word_data(i2c, TCPC_PRODUCT_ID);
- if (ret < 0)
- return ret;
- if (ret != RT1711H_PID) {
- dev_err(&i2c->dev, "pid is not correct, 0x%04x\n", ret);
- return -ENODEV;
- }
- return 0;
-}
-
-static int rt1711h_probe(struct i2c_client *client,
- const struct i2c_device_id *i2c_id)
-{
- int ret;
- struct rt1711h_chip *chip;
-
- ret = rt1711h_check_revision(client);
- if (ret < 0) {
- dev_err(&client->dev, "check vid/pid fail\n");
- return ret;
- }
-
- chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
- if (!chip)
- return -ENOMEM;
-
- chip->data.regmap = devm_regmap_init_i2c(client,
- &rt1711h_regmap_config);
- if (IS_ERR(chip->data.regmap))
- return PTR_ERR(chip->data.regmap);
-
- chip->dev = &client->dev;
- i2c_set_clientdata(client, chip);
-
- ret = rt1711h_sw_reset(chip);
- if (ret < 0)
- return ret;
-
- ret = rt1711h_init_alert(chip, client);
- if (ret < 0)
- return ret;
-
- chip->data.init = rt1711h_init;
- chip->data.set_vconn = rt1711h_set_vconn;
- chip->data.start_drp_toggling = rt1711h_start_drp_toggling;
- chip->tcpci = tcpci_register_port(chip->dev, &chip->data);
- if (IS_ERR_OR_NULL(chip->tcpci))
- return PTR_ERR(chip->tcpci);
-
- return 0;
-}
-
-static int rt1711h_remove(struct i2c_client *client)
-{
- struct rt1711h_chip *chip = i2c_get_clientdata(client);
-
- tcpci_unregister_port(chip->tcpci);
- return 0;
-}
-
-static const struct i2c_device_id rt1711h_id[] = {
- { "rt1711h", 0 },
- { }
-};
-MODULE_DEVICE_TABLE(i2c, rt1711h_id);
-
-#ifdef CONFIG_OF
-static const struct of_device_id rt1711h_of_match[] = {
- { .compatible = "richtek,rt1711h", },
- {},
-};
-MODULE_DEVICE_TABLE(of, rt1711h_of_match);
-#endif
-
-static struct i2c_driver rt1711h_i2c_driver = {
- .driver = {
- .name = "rt1711h",
- .of_match_table = of_match_ptr(rt1711h_of_match),
- },
- .probe = rt1711h_probe,
- .remove = rt1711h_remove,
- .id_table = rt1711h_id,
-};
-module_i2c_driver(rt1711h_i2c_driver);
-
-MODULE_AUTHOR("ShuFan Lee <shufan_lee@richtek.com>");
-MODULE_DESCRIPTION("RT1711H USB Type-C Port Controller Interface Driver");
-MODULE_LICENSE("GPL");
if TYPEC_TCPM
+config TYPEC_TCPCI
+ tristate "Type-C Port Controller Interface driver"
+ depends on I2C
+ select REGMAP_I2C
+ help
+ Type-C Port Controller driver for TCPCI-compliant controller.
+
+config TYPEC_RT1711H
+ tristate "Richtek RT1711H Type-C chip driver"
+ select TYPEC_TCPCI
+ help
+ Richtek RT1711H Type-C chip driver that works with
+ Type-C Port Controller Manager to provide USB PD and USB
+ Type-C functionalities.
+
source "drivers/usb/typec/fusb302/Kconfig"
config TYPEC_WCOVE
obj-$(CONFIG_TYPEC_UCSI) += ucsi/
obj-$(CONFIG_TYPEC_TPS6598X) += tps6598x.o
obj-$(CONFIG_TYPEC) += mux/
+obj-$(CONFIG_TYPEC_TCPCI) += tcpci.o
+obj-$(CONFIG_TYPEC_RT1711H) += tcpci_rt1711h.o
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2015-2017 Google, Inc
+ *
+ * USB Type-C Port Controller Interface.
+ */
+
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/usb/pd.h>
+#include <linux/usb/tcpm.h>
+#include <linux/usb/typec.h>
+
+#include "tcpci.h"
+
+#define PD_RETRY_COUNT 3
+
+struct tcpci {
+ struct device *dev;
+
+ struct tcpm_port *port;
+
+ struct regmap *regmap;
+
+ bool controls_vbus;
+
+ struct tcpc_dev tcpc;
+ struct tcpci_data *data;
+};
+
+struct tcpci_chip {
+ struct tcpci *tcpci;
+ struct tcpci_data data;
+};
+
+static inline struct tcpci *tcpc_to_tcpci(struct tcpc_dev *tcpc)
+{
+ return container_of(tcpc, struct tcpci, tcpc);
+}
+
+static int tcpci_read16(struct tcpci *tcpci, unsigned int reg, u16 *val)
+{
+ return regmap_raw_read(tcpci->regmap, reg, val, sizeof(u16));
+}
+
+static int tcpci_write16(struct tcpci *tcpci, unsigned int reg, u16 val)
+{
+ return regmap_raw_write(tcpci->regmap, reg, &val, sizeof(u16));
+}
+
+static int tcpci_set_cc(struct tcpc_dev *tcpc, enum typec_cc_status cc)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ unsigned int reg;
+ int ret;
+
+ switch (cc) {
+ case TYPEC_CC_RA:
+ reg = (TCPC_ROLE_CTRL_CC_RA << TCPC_ROLE_CTRL_CC1_SHIFT) |
+ (TCPC_ROLE_CTRL_CC_RA << TCPC_ROLE_CTRL_CC2_SHIFT);
+ break;
+ case TYPEC_CC_RD:
+ reg = (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) |
+ (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT);
+ break;
+ case TYPEC_CC_RP_DEF:
+ reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) |
+ (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) |
+ (TCPC_ROLE_CTRL_RP_VAL_DEF <<
+ TCPC_ROLE_CTRL_RP_VAL_SHIFT);
+ break;
+ case TYPEC_CC_RP_1_5:
+ reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) |
+ (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) |
+ (TCPC_ROLE_CTRL_RP_VAL_1_5 <<
+ TCPC_ROLE_CTRL_RP_VAL_SHIFT);
+ break;
+ case TYPEC_CC_RP_3_0:
+ reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) |
+ (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) |
+ (TCPC_ROLE_CTRL_RP_VAL_3_0 <<
+ TCPC_ROLE_CTRL_RP_VAL_SHIFT);
+ break;
+ case TYPEC_CC_OPEN:
+ default:
+ reg = (TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC1_SHIFT) |
+ (TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC2_SHIFT);
+ break;
+ }
+
+ ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int tcpci_start_drp_toggling(struct tcpc_dev *tcpc,
+ enum typec_cc_status cc)
+{
+ int ret;
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ unsigned int reg = TCPC_ROLE_CTRL_DRP;
+
+ /* Handle vendor drp toggling */
+ if (tcpci->data->start_drp_toggling) {
+ ret = tcpci->data->start_drp_toggling(tcpci, tcpci->data, cc);
+ if (ret < 0)
+ return ret;
+ }
+
+ switch (cc) {
+ default:
+ case TYPEC_CC_RP_DEF:
+ reg |= (TCPC_ROLE_CTRL_RP_VAL_DEF <<
+ TCPC_ROLE_CTRL_RP_VAL_SHIFT);
+ break;
+ case TYPEC_CC_RP_1_5:
+ reg |= (TCPC_ROLE_CTRL_RP_VAL_1_5 <<
+ TCPC_ROLE_CTRL_RP_VAL_SHIFT);
+ break;
+ case TYPEC_CC_RP_3_0:
+ reg |= (TCPC_ROLE_CTRL_RP_VAL_3_0 <<
+ TCPC_ROLE_CTRL_RP_VAL_SHIFT);
+ break;
+ }
+
+ if (cc == TYPEC_CC_RD)
+ reg |= (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) |
+ (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT);
+ else
+ reg |= (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) |
+ (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT);
+ ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg);
+ if (ret < 0)
+ return ret;
+ return regmap_write(tcpci->regmap, TCPC_COMMAND,
+ TCPC_CMD_LOOK4CONNECTION);
+}
+
+static enum typec_cc_status tcpci_to_typec_cc(unsigned int cc, bool sink)
+{
+ switch (cc) {
+ case 0x1:
+ return sink ? TYPEC_CC_RP_DEF : TYPEC_CC_RA;
+ case 0x2:
+ return sink ? TYPEC_CC_RP_1_5 : TYPEC_CC_RD;
+ case 0x3:
+ if (sink)
+ return TYPEC_CC_RP_3_0;
+ /* fall through */
+ case 0x0:
+ default:
+ return TYPEC_CC_OPEN;
+ }
+}
+
+static int tcpci_get_cc(struct tcpc_dev *tcpc,
+ enum typec_cc_status *cc1, enum typec_cc_status *cc2)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ unsigned int reg;
+ int ret;
+
+ ret = regmap_read(tcpci->regmap, TCPC_CC_STATUS, ®);
+ if (ret < 0)
+ return ret;
+
+ *cc1 = tcpci_to_typec_cc((reg >> TCPC_CC_STATUS_CC1_SHIFT) &
+ TCPC_CC_STATUS_CC1_MASK,
+ reg & TCPC_CC_STATUS_TERM);
+ *cc2 = tcpci_to_typec_cc((reg >> TCPC_CC_STATUS_CC2_SHIFT) &
+ TCPC_CC_STATUS_CC2_MASK,
+ reg & TCPC_CC_STATUS_TERM);
+
+ return 0;
+}
+
+static int tcpci_set_polarity(struct tcpc_dev *tcpc,
+ enum typec_cc_polarity polarity)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ unsigned int reg;
+ int ret;
+
+ /* Keep the disconnect cc line open */
+ ret = regmap_read(tcpci->regmap, TCPC_ROLE_CTRL, ®);
+ if (ret < 0)
+ return ret;
+
+ if (polarity == TYPEC_POLARITY_CC2)
+ reg |= TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC1_SHIFT;
+ else
+ reg |= TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC2_SHIFT;
+ ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg);
+ if (ret < 0)
+ return ret;
+
+ return regmap_write(tcpci->regmap, TCPC_TCPC_CTRL,
+ (polarity == TYPEC_POLARITY_CC2) ?
+ TCPC_TCPC_CTRL_ORIENTATION : 0);
+}
+
+static int tcpci_set_vconn(struct tcpc_dev *tcpc, bool enable)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ int ret;
+
+ /* Handle vendor set vconn */
+ if (tcpci->data->set_vconn) {
+ ret = tcpci->data->set_vconn(tcpci, tcpci->data, enable);
+ if (ret < 0)
+ return ret;
+ }
+
+ return regmap_update_bits(tcpci->regmap, TCPC_POWER_CTRL,
+ TCPC_POWER_CTRL_VCONN_ENABLE,
+ enable ? TCPC_POWER_CTRL_VCONN_ENABLE : 0);
+}
+
+static int tcpci_set_roles(struct tcpc_dev *tcpc, bool attached,
+ enum typec_role role, enum typec_data_role data)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ unsigned int reg;
+ int ret;
+
+ reg = PD_REV20 << TCPC_MSG_HDR_INFO_REV_SHIFT;
+ if (role == TYPEC_SOURCE)
+ reg |= TCPC_MSG_HDR_INFO_PWR_ROLE;
+ if (data == TYPEC_HOST)
+ reg |= TCPC_MSG_HDR_INFO_DATA_ROLE;
+ ret = regmap_write(tcpci->regmap, TCPC_MSG_HDR_INFO, reg);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int tcpci_set_pd_rx(struct tcpc_dev *tcpc, bool enable)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ unsigned int reg = 0;
+ int ret;
+
+ if (enable)
+ reg = TCPC_RX_DETECT_SOP | TCPC_RX_DETECT_HARD_RESET;
+ ret = regmap_write(tcpci->regmap, TCPC_RX_DETECT, reg);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int tcpci_get_vbus(struct tcpc_dev *tcpc)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ unsigned int reg;
+ int ret;
+
+ ret = regmap_read(tcpci->regmap, TCPC_POWER_STATUS, ®);
+ if (ret < 0)
+ return ret;
+
+ return !!(reg & TCPC_POWER_STATUS_VBUS_PRES);
+}
+
+static int tcpci_set_vbus(struct tcpc_dev *tcpc, bool source, bool sink)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ int ret;
+
+ /* Disable both source and sink first before enabling anything */
+
+ if (!source) {
+ ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
+ TCPC_CMD_DISABLE_SRC_VBUS);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (!sink) {
+ ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
+ TCPC_CMD_DISABLE_SINK_VBUS);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (source) {
+ ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
+ TCPC_CMD_SRC_VBUS_DEFAULT);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (sink) {
+ ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
+ TCPC_CMD_SINK_VBUS);
+ if (ret < 0)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int tcpci_pd_transmit(struct tcpc_dev *tcpc,
+ enum tcpm_transmit_type type,
+ const struct pd_message *msg)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ u16 header = msg ? le16_to_cpu(msg->header) : 0;
+ unsigned int reg, cnt;
+ int ret;
+
+ cnt = msg ? pd_header_cnt(header) * 4 : 0;
+ ret = regmap_write(tcpci->regmap, TCPC_TX_BYTE_CNT, cnt + 2);
+ if (ret < 0)
+ return ret;
+
+ ret = tcpci_write16(tcpci, TCPC_TX_HDR, header);
+ if (ret < 0)
+ return ret;
+
+ if (cnt > 0) {
+ ret = regmap_raw_write(tcpci->regmap, TCPC_TX_DATA,
+ &msg->payload, cnt);
+ if (ret < 0)
+ return ret;
+ }
+
+ reg = (PD_RETRY_COUNT << TCPC_TRANSMIT_RETRY_SHIFT) |
+ (type << TCPC_TRANSMIT_TYPE_SHIFT);
+ ret = regmap_write(tcpci->regmap, TCPC_TRANSMIT, reg);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int tcpci_init(struct tcpc_dev *tcpc)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ unsigned long timeout = jiffies + msecs_to_jiffies(2000); /* XXX */
+ unsigned int reg;
+ int ret;
+
+ while (time_before_eq(jiffies, timeout)) {
+ ret = regmap_read(tcpci->regmap, TCPC_POWER_STATUS, ®);
+ if (ret < 0)
+ return ret;
+ if (!(reg & TCPC_POWER_STATUS_UNINIT))
+ break;
+ usleep_range(10000, 20000);
+ }
+ if (time_after(jiffies, timeout))
+ return -ETIMEDOUT;
+
+ /* Handle vendor init */
+ if (tcpci->data->init) {
+ ret = tcpci->data->init(tcpci, tcpci->data);
+ if (ret < 0)
+ return ret;
+ }
+
+ /* Clear all events */
+ ret = tcpci_write16(tcpci, TCPC_ALERT, 0xffff);
+ if (ret < 0)
+ return ret;
+
+ if (tcpci->controls_vbus)
+ reg = TCPC_POWER_STATUS_VBUS_PRES;
+ else
+ reg = 0;
+ ret = regmap_write(tcpci->regmap, TCPC_POWER_STATUS_MASK, reg);
+ if (ret < 0)
+ return ret;
+
+ /* Enable Vbus detection */
+ ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
+ TCPC_CMD_ENABLE_VBUS_DETECT);
+ if (ret < 0)
+ return ret;
+
+ reg = TCPC_ALERT_TX_SUCCESS | TCPC_ALERT_TX_FAILED |
+ TCPC_ALERT_TX_DISCARDED | TCPC_ALERT_RX_STATUS |
+ TCPC_ALERT_RX_HARD_RST | TCPC_ALERT_CC_STATUS;
+ if (tcpci->controls_vbus)
+ reg |= TCPC_ALERT_POWER_STATUS;
+ return tcpci_write16(tcpci, TCPC_ALERT_MASK, reg);
+}
+
+irqreturn_t tcpci_irq(struct tcpci *tcpci)
+{
+ u16 status;
+
+ tcpci_read16(tcpci, TCPC_ALERT, &status);
+
+ /*
+ * Clear alert status for everything except RX_STATUS, which shouldn't
+ * be cleared until we have successfully retrieved message.
+ */
+ if (status & ~TCPC_ALERT_RX_STATUS)
+ tcpci_write16(tcpci, TCPC_ALERT,
+ status & ~TCPC_ALERT_RX_STATUS);
+
+ if (status & TCPC_ALERT_CC_STATUS)
+ tcpm_cc_change(tcpci->port);
+
+ if (status & TCPC_ALERT_POWER_STATUS) {
+ unsigned int reg;
+
+ regmap_read(tcpci->regmap, TCPC_POWER_STATUS_MASK, ®);
+
+ /*
+ * If power status mask has been reset, then the TCPC
+ * has reset.
+ */
+ if (reg == 0xff)
+ tcpm_tcpc_reset(tcpci->port);
+ else
+ tcpm_vbus_change(tcpci->port);
+ }
+
+ if (status & TCPC_ALERT_RX_STATUS) {
+ struct pd_message msg;
+ unsigned int cnt;
+ u16 header;
+
+ regmap_read(tcpci->regmap, TCPC_RX_BYTE_CNT, &cnt);
+
+ tcpci_read16(tcpci, TCPC_RX_HDR, &header);
+ msg.header = cpu_to_le16(header);
+
+ if (WARN_ON(cnt > sizeof(msg.payload)))
+ cnt = sizeof(msg.payload);
+
+ if (cnt > 0)
+ regmap_raw_read(tcpci->regmap, TCPC_RX_DATA,
+ &msg.payload, cnt);
+
+ /* Read complete, clear RX status alert bit */
+ tcpci_write16(tcpci, TCPC_ALERT, TCPC_ALERT_RX_STATUS);
+
+ tcpm_pd_receive(tcpci->port, &msg);
+ }
+
+ if (status & TCPC_ALERT_RX_HARD_RST)
+ tcpm_pd_hard_reset(tcpci->port);
+
+ if (status & TCPC_ALERT_TX_SUCCESS)
+ tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_SUCCESS);
+ else if (status & TCPC_ALERT_TX_DISCARDED)
+ tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_DISCARDED);
+ else if (status & TCPC_ALERT_TX_FAILED)
+ tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_FAILED);
+
+ return IRQ_HANDLED;
+}
+EXPORT_SYMBOL_GPL(tcpci_irq);
+
+static irqreturn_t _tcpci_irq(int irq, void *dev_id)
+{
+ struct tcpci_chip *chip = dev_id;
+
+ return tcpci_irq(chip->tcpci);
+}
+
+static const struct regmap_config tcpci_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = 0x7F, /* 0x80 .. 0xFF are vendor defined */
+};
+
+static int tcpci_parse_config(struct tcpci *tcpci)
+{
+ tcpci->controls_vbus = true; /* XXX */
+
+ tcpci->tcpc.fwnode = device_get_named_child_node(tcpci->dev,
+ "connector");
+ if (!tcpci->tcpc.fwnode) {
+ dev_err(tcpci->dev, "Can't find connector node.\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data)
+{
+ struct tcpci *tcpci;
+ int err;
+
+ tcpci = devm_kzalloc(dev, sizeof(*tcpci), GFP_KERNEL);
+ if (!tcpci)
+ return ERR_PTR(-ENOMEM);
+
+ tcpci->dev = dev;
+ tcpci->data = data;
+ tcpci->regmap = data->regmap;
+
+ tcpci->tcpc.init = tcpci_init;
+ tcpci->tcpc.get_vbus = tcpci_get_vbus;
+ tcpci->tcpc.set_vbus = tcpci_set_vbus;
+ tcpci->tcpc.set_cc = tcpci_set_cc;
+ tcpci->tcpc.get_cc = tcpci_get_cc;
+ tcpci->tcpc.set_polarity = tcpci_set_polarity;
+ tcpci->tcpc.set_vconn = tcpci_set_vconn;
+ tcpci->tcpc.start_drp_toggling = tcpci_start_drp_toggling;
+
+ tcpci->tcpc.set_pd_rx = tcpci_set_pd_rx;
+ tcpci->tcpc.set_roles = tcpci_set_roles;
+ tcpci->tcpc.pd_transmit = tcpci_pd_transmit;
+
+ err = tcpci_parse_config(tcpci);
+ if (err < 0)
+ return ERR_PTR(err);
+
+ tcpci->port = tcpm_register_port(tcpci->dev, &tcpci->tcpc);
+ if (IS_ERR(tcpci->port))
+ return ERR_CAST(tcpci->port);
+
+ return tcpci;
+}
+EXPORT_SYMBOL_GPL(tcpci_register_port);
+
+void tcpci_unregister_port(struct tcpci *tcpci)
+{
+ tcpm_unregister_port(tcpci->port);
+}
+EXPORT_SYMBOL_GPL(tcpci_unregister_port);
+
+static int tcpci_probe(struct i2c_client *client,
+ const struct i2c_device_id *i2c_id)
+{
+ struct tcpci_chip *chip;
+ int err;
+ u16 val = 0;
+
+ chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ chip->data.regmap = devm_regmap_init_i2c(client, &tcpci_regmap_config);
+ if (IS_ERR(chip->data.regmap))
+ return PTR_ERR(chip->data.regmap);
+
+ i2c_set_clientdata(client, chip);
+
+ /* Disable chip interrupts before requesting irq */
+ err = regmap_raw_write(chip->data.regmap, TCPC_ALERT_MASK, &val,
+ sizeof(u16));
+ if (err < 0)
+ return err;
+
+ chip->tcpci = tcpci_register_port(&client->dev, &chip->data);
+ if (IS_ERR(chip->tcpci))
+ return PTR_ERR(chip->tcpci);
+
+ err = devm_request_threaded_irq(&client->dev, client->irq, NULL,
+ _tcpci_irq,
+ IRQF_ONESHOT | IRQF_TRIGGER_LOW,
+ dev_name(&client->dev), chip);
+ if (err < 0) {
+ tcpci_unregister_port(chip->tcpci);
+ return err;
+ }
+
+ return 0;
+}
+
+static int tcpci_remove(struct i2c_client *client)
+{
+ struct tcpci_chip *chip = i2c_get_clientdata(client);
+
+ tcpci_unregister_port(chip->tcpci);
+
+ return 0;
+}
+
+static const struct i2c_device_id tcpci_id[] = {
+ { "tcpci", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, tcpci_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id tcpci_of_match[] = {
+ { .compatible = "nxp,ptn5110", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, tcpci_of_match);
+#endif
+
+static struct i2c_driver tcpci_i2c_driver = {
+ .driver = {
+ .name = "tcpci",
+ .of_match_table = of_match_ptr(tcpci_of_match),
+ },
+ .probe = tcpci_probe,
+ .remove = tcpci_remove,
+ .id_table = tcpci_id,
+};
+module_i2c_driver(tcpci_i2c_driver);
+
+MODULE_DESCRIPTION("USB Type-C Port Controller Interface driver");
+MODULE_LICENSE("GPL");
--- /dev/null
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2015-2017 Google, Inc
+ *
+ * USB Type-C Port Controller Interface.
+ */
+
+#ifndef __LINUX_USB_TCPCI_H
+#define __LINUX_USB_TCPCI_H
+
+#define TCPC_VENDOR_ID 0x0
+#define TCPC_PRODUCT_ID 0x2
+#define TCPC_BCD_DEV 0x4
+#define TCPC_TC_REV 0x6
+#define TCPC_PD_REV 0x8
+#define TCPC_PD_INT_REV 0xa
+
+#define TCPC_ALERT 0x10
+#define TCPC_ALERT_VBUS_DISCNCT BIT(11)
+#define TCPC_ALERT_RX_BUF_OVF BIT(10)
+#define TCPC_ALERT_FAULT BIT(9)
+#define TCPC_ALERT_V_ALARM_LO BIT(8)
+#define TCPC_ALERT_V_ALARM_HI BIT(7)
+#define TCPC_ALERT_TX_SUCCESS BIT(6)
+#define TCPC_ALERT_TX_DISCARDED BIT(5)
+#define TCPC_ALERT_TX_FAILED BIT(4)
+#define TCPC_ALERT_RX_HARD_RST BIT(3)
+#define TCPC_ALERT_RX_STATUS BIT(2)
+#define TCPC_ALERT_POWER_STATUS BIT(1)
+#define TCPC_ALERT_CC_STATUS BIT(0)
+
+#define TCPC_ALERT_MASK 0x12
+#define TCPC_POWER_STATUS_MASK 0x14
+#define TCPC_FAULT_STATUS_MASK 0x15
+#define TCPC_CONFIG_STD_OUTPUT 0x18
+
+#define TCPC_TCPC_CTRL 0x19
+#define TCPC_TCPC_CTRL_ORIENTATION BIT(0)
+
+#define TCPC_ROLE_CTRL 0x1a
+#define TCPC_ROLE_CTRL_DRP BIT(6)
+#define TCPC_ROLE_CTRL_RP_VAL_SHIFT 4
+#define TCPC_ROLE_CTRL_RP_VAL_MASK 0x3
+#define TCPC_ROLE_CTRL_RP_VAL_DEF 0x0
+#define TCPC_ROLE_CTRL_RP_VAL_1_5 0x1
+#define TCPC_ROLE_CTRL_RP_VAL_3_0 0x2
+#define TCPC_ROLE_CTRL_CC2_SHIFT 2
+#define TCPC_ROLE_CTRL_CC2_MASK 0x3
+#define TCPC_ROLE_CTRL_CC1_SHIFT 0
+#define TCPC_ROLE_CTRL_CC1_MASK 0x3
+#define TCPC_ROLE_CTRL_CC_RA 0x0
+#define TCPC_ROLE_CTRL_CC_RP 0x1
+#define TCPC_ROLE_CTRL_CC_RD 0x2
+#define TCPC_ROLE_CTRL_CC_OPEN 0x3
+
+#define TCPC_FAULT_CTRL 0x1b
+
+#define TCPC_POWER_CTRL 0x1c
+#define TCPC_POWER_CTRL_VCONN_ENABLE BIT(0)
+
+#define TCPC_CC_STATUS 0x1d
+#define TCPC_CC_STATUS_TOGGLING BIT(5)
+#define TCPC_CC_STATUS_TERM BIT(4)
+#define TCPC_CC_STATUS_CC2_SHIFT 2
+#define TCPC_CC_STATUS_CC2_MASK 0x3
+#define TCPC_CC_STATUS_CC1_SHIFT 0
+#define TCPC_CC_STATUS_CC1_MASK 0x3
+
+#define TCPC_POWER_STATUS 0x1e
+#define TCPC_POWER_STATUS_UNINIT BIT(6)
+#define TCPC_POWER_STATUS_VBUS_DET BIT(3)
+#define TCPC_POWER_STATUS_VBUS_PRES BIT(2)
+
+#define TCPC_FAULT_STATUS 0x1f
+
+#define TCPC_COMMAND 0x23
+#define TCPC_CMD_WAKE_I2C 0x11
+#define TCPC_CMD_DISABLE_VBUS_DETECT 0x22
+#define TCPC_CMD_ENABLE_VBUS_DETECT 0x33
+#define TCPC_CMD_DISABLE_SINK_VBUS 0x44
+#define TCPC_CMD_SINK_VBUS 0x55
+#define TCPC_CMD_DISABLE_SRC_VBUS 0x66
+#define TCPC_CMD_SRC_VBUS_DEFAULT 0x77
+#define TCPC_CMD_SRC_VBUS_HIGH 0x88
+#define TCPC_CMD_LOOK4CONNECTION 0x99
+#define TCPC_CMD_RXONEMORE 0xAA
+#define TCPC_CMD_I2C_IDLE 0xFF
+
+#define TCPC_DEV_CAP_1 0x24
+#define TCPC_DEV_CAP_2 0x26
+#define TCPC_STD_INPUT_CAP 0x28
+#define TCPC_STD_OUTPUT_CAP 0x29
+
+#define TCPC_MSG_HDR_INFO 0x2e
+#define TCPC_MSG_HDR_INFO_DATA_ROLE BIT(3)
+#define TCPC_MSG_HDR_INFO_PWR_ROLE BIT(0)
+#define TCPC_MSG_HDR_INFO_REV_SHIFT 1
+#define TCPC_MSG_HDR_INFO_REV_MASK 0x3
+
+#define TCPC_RX_DETECT 0x2f
+#define TCPC_RX_DETECT_HARD_RESET BIT(5)
+#define TCPC_RX_DETECT_SOP BIT(0)
+
+#define TCPC_RX_BYTE_CNT 0x30
+#define TCPC_RX_BUF_FRAME_TYPE 0x31
+#define TCPC_RX_HDR 0x32
+#define TCPC_RX_DATA 0x34 /* through 0x4f */
+
+#define TCPC_TRANSMIT 0x50
+#define TCPC_TRANSMIT_RETRY_SHIFT 4
+#define TCPC_TRANSMIT_RETRY_MASK 0x3
+#define TCPC_TRANSMIT_TYPE_SHIFT 0
+#define TCPC_TRANSMIT_TYPE_MASK 0x7
+
+#define TCPC_TX_BYTE_CNT 0x51
+#define TCPC_TX_HDR 0x52
+#define TCPC_TX_DATA 0x54 /* through 0x6f */
+
+#define TCPC_VBUS_VOLTAGE 0x70
+#define TCPC_VBUS_SINK_DISCONNECT_THRESH 0x72
+#define TCPC_VBUS_STOP_DISCHARGE_THRESH 0x74
+#define TCPC_VBUS_VOLTAGE_ALARM_HI_CFG 0x76
+#define TCPC_VBUS_VOLTAGE_ALARM_LO_CFG 0x78
+
+struct tcpci;
+struct tcpci_data {
+ struct regmap *regmap;
+ int (*init)(struct tcpci *tcpci, struct tcpci_data *data);
+ int (*set_vconn)(struct tcpci *tcpci, struct tcpci_data *data,
+ bool enable);
+ int (*start_drp_toggling)(struct tcpci *tcpci, struct tcpci_data *data,
+ enum typec_cc_status cc);
+};
+
+struct tcpci *tcpci_register_port(struct device *dev, struct tcpci_data *data);
+void tcpci_unregister_port(struct tcpci *tcpci);
+irqreturn_t tcpci_irq(struct tcpci *tcpci);
+
+#endif /* __LINUX_USB_TCPCI_H */
--- /dev/null
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018, Richtek Technology Corporation
+ *
+ * Richtek RT1711H Type-C Chip Driver
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/gpio/consumer.h>
+#include <linux/usb/tcpm.h>
+#include <linux/regmap.h>
+#include "tcpci.h"
+
+#define RT1711H_VID 0x29CF
+#define RT1711H_PID 0x1711
+
+#define RT1711H_RTCTRL8 0x9B
+
+/* Autoidle timeout = (tout * 2 + 1) * 6.4ms */
+#define RT1711H_RTCTRL8_SET(ck300, ship_off, auto_idle, tout) \
+ (((ck300) << 7) | ((ship_off) << 5) | \
+ ((auto_idle) << 3) | ((tout) & 0x07))
+
+#define RT1711H_RTCTRL11 0x9E
+
+/* I2C timeout = (tout + 1) * 12.5ms */
+#define RT1711H_RTCTRL11_SET(en, tout) \
+ (((en) << 7) | ((tout) & 0x0F))
+
+#define RT1711H_RTCTRL13 0xA0
+#define RT1711H_RTCTRL14 0xA1
+#define RT1711H_RTCTRL15 0xA2
+#define RT1711H_RTCTRL16 0xA3
+
+struct rt1711h_chip {
+ struct tcpci_data data;
+ struct tcpci *tcpci;
+ struct device *dev;
+};
+
+static int rt1711h_read16(struct rt1711h_chip *chip, unsigned int reg, u16 *val)
+{
+ return regmap_raw_read(chip->data.regmap, reg, val, sizeof(u16));
+}
+
+static int rt1711h_write16(struct rt1711h_chip *chip, unsigned int reg, u16 val)
+{
+ return regmap_raw_write(chip->data.regmap, reg, &val, sizeof(u16));
+}
+
+static int rt1711h_read8(struct rt1711h_chip *chip, unsigned int reg, u8 *val)
+{
+ return regmap_raw_read(chip->data.regmap, reg, val, sizeof(u8));
+}
+
+static int rt1711h_write8(struct rt1711h_chip *chip, unsigned int reg, u8 val)
+{
+ return regmap_raw_write(chip->data.regmap, reg, &val, sizeof(u8));
+}
+
+static const struct regmap_config rt1711h_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = 0xFF, /* 0x80 .. 0xFF are vendor defined */
+};
+
+static struct rt1711h_chip *tdata_to_rt1711h(struct tcpci_data *tdata)
+{
+ return container_of(tdata, struct rt1711h_chip, data);
+}
+
+static int rt1711h_init(struct tcpci *tcpci, struct tcpci_data *tdata)
+{
+ int ret;
+ struct rt1711h_chip *chip = tdata_to_rt1711h(tdata);
+
+ /* CK 300K from 320K, shipping off, auto_idle enable, tout = 32ms */
+ ret = rt1711h_write8(chip, RT1711H_RTCTRL8,
+ RT1711H_RTCTRL8_SET(0, 1, 1, 2));
+ if (ret < 0)
+ return ret;
+
+ /* I2C reset : (val + 1) * 12.5ms */
+ ret = rt1711h_write8(chip, RT1711H_RTCTRL11,
+ RT1711H_RTCTRL11_SET(1, 0x0F));
+ if (ret < 0)
+ return ret;
+
+ /* tTCPCfilter : (26.7 * val) us */
+ ret = rt1711h_write8(chip, RT1711H_RTCTRL14, 0x0F);
+ if (ret < 0)
+ return ret;
+
+ /* tDRP : (51.2 + 6.4 * val) ms */
+ ret = rt1711h_write8(chip, RT1711H_RTCTRL15, 0x04);
+ if (ret < 0)
+ return ret;
+
+ /* dcSRC.DRP : 33% */
+ return rt1711h_write16(chip, RT1711H_RTCTRL16, 330);
+}
+
+static int rt1711h_set_vconn(struct tcpci *tcpci, struct tcpci_data *tdata,
+ bool enable)
+{
+ struct rt1711h_chip *chip = tdata_to_rt1711h(tdata);
+
+ return rt1711h_write8(chip, RT1711H_RTCTRL8,
+ RT1711H_RTCTRL8_SET(0, 1, !enable, 2));
+}
+
+static int rt1711h_start_drp_toggling(struct tcpci *tcpci,
+ struct tcpci_data *tdata,
+ enum typec_cc_status cc)
+{
+ struct rt1711h_chip *chip = tdata_to_rt1711h(tdata);
+ int ret;
+ unsigned int reg = 0;
+
+ switch (cc) {
+ default:
+ case TYPEC_CC_RP_DEF:
+ reg |= (TCPC_ROLE_CTRL_RP_VAL_DEF <<
+ TCPC_ROLE_CTRL_RP_VAL_SHIFT);
+ break;
+ case TYPEC_CC_RP_1_5:
+ reg |= (TCPC_ROLE_CTRL_RP_VAL_1_5 <<
+ TCPC_ROLE_CTRL_RP_VAL_SHIFT);
+ break;
+ case TYPEC_CC_RP_3_0:
+ reg |= (TCPC_ROLE_CTRL_RP_VAL_3_0 <<
+ TCPC_ROLE_CTRL_RP_VAL_SHIFT);
+ break;
+ }
+
+ if (cc == TYPEC_CC_RD)
+ reg |= (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) |
+ (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT);
+ else
+ reg |= (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) |
+ (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT);
+
+ ret = rt1711h_write8(chip, TCPC_ROLE_CTRL, reg);
+ if (ret < 0)
+ return ret;
+ usleep_range(500, 1000);
+
+ return 0;
+}
+
+static irqreturn_t rt1711h_irq(int irq, void *dev_id)
+{
+ int ret;
+ u16 alert;
+ u8 status;
+ struct rt1711h_chip *chip = dev_id;
+
+ if (!chip->tcpci)
+ return IRQ_HANDLED;
+
+ ret = rt1711h_read16(chip, TCPC_ALERT, &alert);
+ if (ret < 0)
+ goto out;
+
+ if (alert & TCPC_ALERT_CC_STATUS) {
+ ret = rt1711h_read8(chip, TCPC_CC_STATUS, &status);
+ if (ret < 0)
+ goto out;
+ /* Clear cc change event triggered by starting toggling */
+ if (status & TCPC_CC_STATUS_TOGGLING)
+ rt1711h_write8(chip, TCPC_ALERT, TCPC_ALERT_CC_STATUS);
+ }
+
+out:
+ return tcpci_irq(chip->tcpci);
+}
+
+static int rt1711h_init_alert(struct rt1711h_chip *chip,
+ struct i2c_client *client)
+{
+ int ret;
+
+ /* Disable chip interrupts before requesting irq */
+ ret = rt1711h_write16(chip, TCPC_ALERT_MASK, 0);
+ if (ret < 0)
+ return ret;
+
+ ret = devm_request_threaded_irq(chip->dev, client->irq, NULL,
+ rt1711h_irq,
+ IRQF_ONESHOT | IRQF_TRIGGER_LOW,
+ dev_name(chip->dev), chip);
+ if (ret < 0)
+ return ret;
+ enable_irq_wake(client->irq);
+ return 0;
+}
+
+static int rt1711h_sw_reset(struct rt1711h_chip *chip)
+{
+ int ret;
+
+ ret = rt1711h_write8(chip, RT1711H_RTCTRL13, 0x01);
+ if (ret < 0)
+ return ret;
+
+ usleep_range(1000, 2000);
+ return 0;
+}
+
+static int rt1711h_check_revision(struct i2c_client *i2c)
+{
+ int ret;
+
+ ret = i2c_smbus_read_word_data(i2c, TCPC_VENDOR_ID);
+ if (ret < 0)
+ return ret;
+ if (ret != RT1711H_VID) {
+ dev_err(&i2c->dev, "vid is not correct, 0x%04x\n", ret);
+ return -ENODEV;
+ }
+ ret = i2c_smbus_read_word_data(i2c, TCPC_PRODUCT_ID);
+ if (ret < 0)
+ return ret;
+ if (ret != RT1711H_PID) {
+ dev_err(&i2c->dev, "pid is not correct, 0x%04x\n", ret);
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static int rt1711h_probe(struct i2c_client *client,
+ const struct i2c_device_id *i2c_id)
+{
+ int ret;
+ struct rt1711h_chip *chip;
+
+ ret = rt1711h_check_revision(client);
+ if (ret < 0) {
+ dev_err(&client->dev, "check vid/pid fail\n");
+ return ret;
+ }
+
+ chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL);
+ if (!chip)
+ return -ENOMEM;
+
+ chip->data.regmap = devm_regmap_init_i2c(client,
+ &rt1711h_regmap_config);
+ if (IS_ERR(chip->data.regmap))
+ return PTR_ERR(chip->data.regmap);
+
+ chip->dev = &client->dev;
+ i2c_set_clientdata(client, chip);
+
+ ret = rt1711h_sw_reset(chip);
+ if (ret < 0)
+ return ret;
+
+ ret = rt1711h_init_alert(chip, client);
+ if (ret < 0)
+ return ret;
+
+ chip->data.init = rt1711h_init;
+ chip->data.set_vconn = rt1711h_set_vconn;
+ chip->data.start_drp_toggling = rt1711h_start_drp_toggling;
+ chip->tcpci = tcpci_register_port(chip->dev, &chip->data);
+ if (IS_ERR_OR_NULL(chip->tcpci))
+ return PTR_ERR(chip->tcpci);
+
+ return 0;
+}
+
+static int rt1711h_remove(struct i2c_client *client)
+{
+ struct rt1711h_chip *chip = i2c_get_clientdata(client);
+
+ tcpci_unregister_port(chip->tcpci);
+ return 0;
+}
+
+static const struct i2c_device_id rt1711h_id[] = {
+ { "rt1711h", 0 },
+ { }
+};
+MODULE_DEVICE_TABLE(i2c, rt1711h_id);
+
+#ifdef CONFIG_OF
+static const struct of_device_id rt1711h_of_match[] = {
+ { .compatible = "richtek,rt1711h", },
+ {},
+};
+MODULE_DEVICE_TABLE(of, rt1711h_of_match);
+#endif
+
+static struct i2c_driver rt1711h_i2c_driver = {
+ .driver = {
+ .name = "rt1711h",
+ .of_match_table = of_match_ptr(rt1711h_of_match),
+ },
+ .probe = rt1711h_probe,
+ .remove = rt1711h_remove,
+ .id_table = rt1711h_id,
+};
+module_i2c_driver(rt1711h_i2c_driver);
+
+MODULE_AUTHOR("ShuFan Lee <shufan_lee@richtek.com>");
+MODULE_DESCRIPTION("RT1711H USB Type-C Port Controller Interface Driver");
+MODULE_LICENSE("GPL");
projects / linux.git / commitdiff