Move TCPCI(Typec port controller interface) driver out of staging.
Signed-off-by: Li Jun <jun.li@xxxxxxx>
---
drivers/staging/Kconfig | 2 -
drivers/staging/Makefile | 1 -
drivers/staging/typec/Kconfig | 14 -
drivers/staging/typec/Makefile | 1 -
drivers/staging/typec/TODO | 5 -
drivers/staging/typec/tcpci.c | 637 -----------------------------------------
drivers/staging/typec/tcpci.h | 133 ---------
drivers/usb/typec/Kconfig | 7 +
drivers/usb/typec/Makefile | 1 +
drivers/usb/typec/tcpci.c | 637 +++++++++++++++++++++++++++++++++++++++++
drivers/usb/typec/tcpci.h | 133 +++++++++
11 files changed, 778 insertions(+), 793 deletions(-)
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 5546839..1e3d5d0 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -112,8 +112,6 @@ source "drivers/staging/vc04_services/Kconfig"
source "drivers/staging/ccree/Kconfig"
-source "drivers/staging/typec/Kconfig"
-
source "drivers/staging/vboxvideo/Kconfig"
source "drivers/staging/pi433/Kconfig"
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index 8951c37..4d1ccb4 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -1,7 +1,6 @@
# Makefile for staging directory
obj-y += media/
-obj-y += typec/
obj-$(CONFIG_IRDA) += irda/net/
obj-$(CONFIG_IRDA) += irda/drivers/
obj-$(CONFIG_PRISM2_USB) += wlan-ng/
diff --git a/drivers/staging/typec/Kconfig b/drivers/staging/typec/Kconfig
deleted file mode 100644
index 5359f55..0000000
--- a/drivers/staging/typec/Kconfig
+++ /dev/null
@@ -1,14 +0,0 @@
-menu "USB Power Delivery and Type-C drivers"
-
-if TYPEC_TCPM
-
-config TYPEC_TCPCI
- tristate "Type-C Port Controller Interface driver"
- depends on I2C
- select REGMAP_I2C
- help
- Type-C Port Controller driver for TCPCI-compliant controller.
-
-endif
-
-endmenu
diff --git a/drivers/staging/typec/Makefile b/drivers/staging/typec/Makefile
deleted file mode 100644
index 53d649a..0000000
--- a/drivers/staging/typec/Makefile
+++ /dev/null
@@ -1 +0,0 @@
-obj-$(CONFIG_TYPEC_TCPCI) += tcpci.o
diff --git a/drivers/staging/typec/TODO b/drivers/staging/typec/TODO
deleted file mode 100644
index 53fe2f7..0000000
--- a/drivers/staging/typec/TODO
+++ /dev/null
@@ -1,5 +0,0 @@
-tcpci:
-- Test with real hardware
-
-Please send patches to Guenter Roeck <linux@xxxxxxxxxxxx> and copy
-Heikki Krogerus <heikki.krogerus@xxxxxxxxxxxxxxx>.
diff --git a/drivers/staging/typec/tcpci.c b/drivers/staging/typec/tcpci.c
deleted file mode 100644
index 293a07c..0000000
--- a/drivers/staging/typec/tcpci.c
+++ /dev/null
@@ -1,637 +0,0 @@
-/*
- * Copyright 2015-2017 Google, Inc
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * 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/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 i2c_client *client;
-
- struct tcpm_port *port;
-
- struct regmap *regmap;
-
- bool controls_vbus;
-
- struct tcpc_dev tcpc;
-};
-
-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,
- unsigned int *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,
- bool attached, enum typec_cc_polarity polarity)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- unsigned int reg = 0, reg_cc1 = 0, reg_cc2 = 0;
- 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_cc1 = TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT;
- reg_cc2 = TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT;
- break;
- case TYPEC_CC_RP_DEF:
- reg_cc1 = TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT;
- reg_cc2 = TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT;
- reg = TCPC_ROLE_CTRL_RP_VAL_DEF << TCPC_ROLE_CTRL_RP_VAL_SHIFT;
- break;
- case TYPEC_CC_RP_1_5:
- reg_cc1 = TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT;
- reg_cc2 = TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT;
- reg = TCPC_ROLE_CTRL_RP_VAL_1_5 << TCPC_ROLE_CTRL_RP_VAL_SHIFT;
- break;
- case TYPEC_CC_RP_3_0:
- reg_cc1 = TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT;
- reg_cc2 = TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT;
- reg = 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;
- }
-
- if (!attached)
- reg |= reg_cc1 | reg_cc2;
- else if (polarity == TYPEC_POLARITY_CC1)
- reg |= reg_cc1;
- else
- reg |= reg_cc2;
-
- 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)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- unsigned int reg = TCPC_ROLE_CTRL_DRP;
- int 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;
- 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);
- int ret;
-
- ret = regmap_write(tcpci->regmap, TCPC_TCPC_CTRL,
- (polarity == TYPEC_POLARITY_CC2) ?
- TCPC_TCPC_CTRL_ORIENTATION : 0);
- if (ret < 0)
- return ret;
-
- return 0;
-}
-
-static int tcpci_set_vconn(struct tcpc_dev *tcpc, bool enable)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
-
- 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);
- unsigned int reg, cnt, header;
- int ret;
-
- cnt = msg ? pd_header_cnt(msg->header) * 4 : 0;
- ret = regmap_write(tcpci->regmap, TCPC_TX_BYTE_CNT, cnt + 2);
- if (ret < 0)
- return ret;
-
- header = msg ? msg->header : 0;
- 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_vbus_detect(struct tcpc_dev *tcpc, bool enable)
-{
- struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
- int ret;
-
- if (enable) {
- ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
- TCPC_CMD_ENABLE_VBUS_DETECT);
- if (ret < 0)
- return ret;
- } else {
- ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
- TCPC_CMD_DISABLE_VBUS_DETECT);
- 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;
-
- /* 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 */
- tcpci_vbus_detect(tcpc, true);
-
- 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);
-}
-
-static irqreturn_t tcpci_irq(int irq, void *dev_id)
-{
- struct tcpci *tcpci = dev_id;
- unsigned int status, reg;
-
- 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) {
- 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;
-
- regmap_read(tcpci->regmap, TCPC_RX_BYTE_CNT, &cnt);
-
- tcpci_read16(tcpci, TCPC_RX_HDR, ®);
- msg.header = reg;
-
- 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;
-}
-
-static const struct regmap_config tcpci_regmap_config = {
- .reg_bits = 8,
- .val_bits = 8,
-
- .max_register = 0x7F, /* 0x80 .. 0xFF are vendor defined */
-};
-
-/* Populate struct tcpc_config from device-tree */
-static int tcpci_parse_config(struct tcpci *tcpci)
-{
- struct tcpc_config *tcfg;
- int ret = -EINVAL;
-
- tcpci->controls_vbus = true; /* XXX */
-
- tcpci->tcpc.config = devm_kzalloc(tcpci->dev, sizeof(*tcfg),
- GFP_KERNEL);
- if (!tcpci->tcpc.config)
- return -ENOMEM;
-
- tcfg = tcpci->tcpc.config;
-
- /* Get port-type */
- ret = typec_get_port_type(tcpci->dev);
- if (ret < 0) {
- dev_err(tcpci->dev, "typec port type is NOT correct!\n");
- return ret;
- }
- tcfg->type = ret;
-
- if (tcfg->type == TYPEC_PORT_UFP)
- goto sink;
-
- /* Get source PDO */
- tcfg->nr_src_pdo = device_property_read_u32_array(tcpci->dev,
- "src-pdos", NULL, 0);
- if (tcfg->nr_src_pdo <= 0) {
- dev_err(tcpci->dev, "typec source pdo is missing!\n");
- return -EINVAL;
- }
-
- tcfg->src_pdo = devm_kzalloc(tcpci->dev,
- sizeof(*tcfg->src_pdo) * tcfg->nr_src_pdo, GFP_KERNEL);
- if (!tcfg->src_pdo)
- return -ENOMEM;
-
- ret = device_property_read_u32_array(tcpci->dev, "src-pdos",
- tcfg->src_pdo, tcfg->nr_src_pdo);
- if (ret) {
- dev_err(tcpci->dev, "Failed to read src pdo!\n");
- return -EINVAL;
- }
-
- if (tcfg->type == TYPEC_PORT_DFP)
- return 0;
-
- /* Get the preferred power role for drp */
- ret = typec_get_power_role(tcpci->dev);
- if (ret < 0) {
- dev_err(tcpci->dev, "typec preferred role is wrong!\n");
- return ret;
- }
- tcfg->default_role = ret;
-sink:
- /* Get sink power capability */
- tcfg->nr_snk_pdo = device_property_read_u32_array(tcpci->dev,
- "snk-pdos", NULL, 0);
- if (tcfg->nr_snk_pdo <= 0) {
- dev_err(tcpci->dev, "typec sink pdo is missing!\n");
- return -EINVAL;
- }
-
- tcfg->snk_pdo = devm_kzalloc(tcpci->dev,
- sizeof(*tcfg->snk_pdo) * tcfg->nr_snk_pdo, GFP_KERNEL);
- if (!tcfg->snk_pdo)
- return -ENOMEM;
-
- ret = device_property_read_u32_array(tcpci->dev, "snk-pdos",
- tcfg->snk_pdo, tcfg->nr_snk_pdo);
- if (ret) {
- dev_err(tcpci->dev, "Failed to read sink pdo!\n");
- return -EINVAL;
- }
-
- if (device_property_read_u32(tcpci->dev, "max-snk-mv",
- &tcfg->max_snk_mv) ||
- device_property_read_u32(tcpci->dev, "max-snk-ma",
- &tcfg->max_snk_ma) ||
- device_property_read_u32(tcpci->dev, "op-snk-mw",
- &tcfg->operating_snk_mw)) {
- dev_err(tcpci->dev, "Failed to read sink capability!\n");
- return -EINVAL;
- }
-
- return 0;
-}
-
-static int tcpci_probe(struct i2c_client *client,
- const struct i2c_device_id *i2c_id)
-{
- struct tcpci *tcpci;
- int err;
-
- tcpci = devm_kzalloc(&client->dev, sizeof(*tcpci), GFP_KERNEL);
- if (!tcpci)
- return -ENOMEM;
-
- tcpci->client = client;
- tcpci->dev = &client->dev;
- i2c_set_clientdata(client, tcpci);
- tcpci->regmap = devm_regmap_init_i2c(client, &tcpci_regmap_config);
- if (IS_ERR(tcpci->regmap))
- return PTR_ERR(tcpci->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;
-
- /* Disable chip interrupts */
- tcpci_write16(tcpci, TCPC_ALERT_MASK, 0);
-
- tcpci->port = tcpm_register_port(tcpci->dev, &tcpci->tcpc);
- if (IS_ERR(tcpci->port))
- return PTR_ERR(tcpci->port);
-
- return devm_request_threaded_irq(tcpci->dev, client->irq, NULL,
- tcpci_irq,
- IRQF_ONESHOT | IRQF_TRIGGER_LOW,
- dev_name(tcpci->dev), tcpci);
-}
-
-static int tcpci_remove(struct i2c_client *client)
-{
- struct tcpci *tcpci = i2c_get_clientdata(client);
-
- tcpm_unregister_port(tcpci->port);
-
- 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 = "usb,tcpci", },
- {},
-};
-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");
diff --git a/drivers/staging/typec/tcpci.h b/drivers/staging/typec/tcpci.h
deleted file mode 100644
index 10b04c8..0000000
--- a/drivers/staging/typec/tcpci.h
+++ /dev/null
@@ -1,133 +0,0 @@
-/*
- * Copyright 2015-2017 Google, Inc
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * 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_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
-
-#endif /* __LINUX_USB_TCPCI_H */
diff --git a/drivers/usb/typec/Kconfig b/drivers/usb/typec/Kconfig
index 819c0ed..33b04c4 100644
--- a/drivers/usb/typec/Kconfig
+++ b/drivers/usb/typec/Kconfig
@@ -14,6 +14,13 @@ config TYPEC_TCPM
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.
+
source "drivers/usb/typec/fusb302/Kconfig"
endif
diff --git a/drivers/usb/typec/Makefile b/drivers/usb/typec/Makefile
index b77688c..c2fbf17 100644
--- a/drivers/usb/typec/Makefile
+++ b/drivers/usb/typec/Makefile
@@ -3,3 +3,4 @@ obj-$(CONFIG_TYPEC_TCPM) += tcpm.o
obj-y += fusb302/
obj-$(CONFIG_TYPEC_WCOVE) += typec_wcove.o
obj-$(CONFIG_TYPEC_UCSI) += ucsi/
+obj-$(CONFIG_TYPEC_TCPCI) += tcpci.o
diff --git a/drivers/usb/typec/tcpci.c b/drivers/usb/typec/tcpci.c
new file mode 100644
index 0000000..293a07c
--- /dev/null
+++ b/drivers/usb/typec/tcpci.c
@@ -0,0 +1,637 @@
+/*
+ * Copyright 2015-2017 Google, Inc
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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/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 i2c_client *client;
+
+ struct tcpm_port *port;
+
+ struct regmap *regmap;
+
+ bool controls_vbus;
+
+ struct tcpc_dev tcpc;
+};
+
+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,
+ unsigned int *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,
+ bool attached, enum typec_cc_polarity polarity)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ unsigned int reg = 0, reg_cc1 = 0, reg_cc2 = 0;
+ 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_cc1 = TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT;
+ reg_cc2 = TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT;
+ break;
+ case TYPEC_CC_RP_DEF:
+ reg_cc1 = TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT;
+ reg_cc2 = TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT;
+ reg = TCPC_ROLE_CTRL_RP_VAL_DEF << TCPC_ROLE_CTRL_RP_VAL_SHIFT;
+ break;
+ case TYPEC_CC_RP_1_5:
+ reg_cc1 = TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT;
+ reg_cc2 = TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT;
+ reg = TCPC_ROLE_CTRL_RP_VAL_1_5 << TCPC_ROLE_CTRL_RP_VAL_SHIFT;
+ break;
+ case TYPEC_CC_RP_3_0:
+ reg_cc1 = TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT;
+ reg_cc2 = TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT;
+ reg = 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;
+ }
+
+ if (!attached)
+ reg |= reg_cc1 | reg_cc2;
+ else if (polarity == TYPEC_POLARITY_CC1)
+ reg |= reg_cc1;
+ else
+ reg |= reg_cc2;
+
+ 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)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ unsigned int reg = TCPC_ROLE_CTRL_DRP;
+ int 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;
+ 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);
+ int ret;
+
+ ret = regmap_write(tcpci->regmap, TCPC_TCPC_CTRL,
+ (polarity == TYPEC_POLARITY_CC2) ?
+ TCPC_TCPC_CTRL_ORIENTATION : 0);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+static int tcpci_set_vconn(struct tcpc_dev *tcpc, bool enable)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+
+ 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);
+ unsigned int reg, cnt, header;
+ int ret;
+
+ cnt = msg ? pd_header_cnt(msg->header) * 4 : 0;
+ ret = regmap_write(tcpci->regmap, TCPC_TX_BYTE_CNT, cnt + 2);
+ if (ret < 0)
+ return ret;
+
+ header = msg ? msg->header : 0;
+ 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_vbus_detect(struct tcpc_dev *tcpc, bool enable)
+{
+ struct tcpci *tcpci = tcpc_to_tcpci(tcpc);
+ int ret;
+
+ if (enable) {
+ ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
+ TCPC_CMD_ENABLE_VBUS_DETECT);
+ if (ret < 0)
+ return ret;
+ } else {
+ ret = regmap_write(tcpci->regmap, TCPC_COMMAND,
+ TCPC_CMD_DISABLE_VBUS_DETECT);
+ 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;
+
+ /* 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 */
+ tcpci_vbus_detect(tcpc, true);
+
+ 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);
+}
+
+static irqreturn_t tcpci_irq(int irq, void *dev_id)
+{
+ struct tcpci *tcpci = dev_id;
+ unsigned int status, reg;
+
+ 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) {
+ 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;
+
+ regmap_read(tcpci->regmap, TCPC_RX_BYTE_CNT, &cnt);
+
+ tcpci_read16(tcpci, TCPC_RX_HDR, ®);
+ msg.header = reg;
+
+ 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;
+}
+
+static const struct regmap_config tcpci_regmap_config = {
+ .reg_bits = 8,
+ .val_bits = 8,
+
+ .max_register = 0x7F, /* 0x80 .. 0xFF are vendor defined */
+};
+
+/* Populate struct tcpc_config from device-tree */
+static int tcpci_parse_config(struct tcpci *tcpci)
+{
+ struct tcpc_config *tcfg;
+ int ret = -EINVAL;
+
+ tcpci->controls_vbus = true; /* XXX */
+
+ tcpci->tcpc.config = devm_kzalloc(tcpci->dev, sizeof(*tcfg),
+ GFP_KERNEL);
+ if (!tcpci->tcpc.config)
+ return -ENOMEM;
+
+ tcfg = tcpci->tcpc.config;
+
+ /* Get port-type */
+ ret = typec_get_port_type(tcpci->dev);
+ if (ret < 0) {
+ dev_err(tcpci->dev, "typec port type is NOT correct!\n");
+ return ret;
+ }
+ tcfg->type = ret;
+
+ if (tcfg->type == TYPEC_PORT_UFP)
+ goto sink;
+
+ /* Get source PDO */
+ tcfg->nr_src_pdo = device_property_read_u32_array(tcpci->dev,
+ "src-pdos", NULL, 0);
+ if (tcfg->nr_src_pdo <= 0) {
+ dev_err(tcpci->dev, "typec source pdo is missing!\n");
+ return -EINVAL;
+ }
+
+ tcfg->src_pdo = devm_kzalloc(tcpci->dev,
+ sizeof(*tcfg->src_pdo) * tcfg->nr_src_pdo, GFP_KERNEL);
+ if (!tcfg->src_pdo)
+ return -ENOMEM;
+
+ ret = device_property_read_u32_array(tcpci->dev, "src-pdos",
+ tcfg->src_pdo, tcfg->nr_src_pdo);
+ if (ret) {
+ dev_err(tcpci->dev, "Failed to read src pdo!\n");
+ return -EINVAL;
+ }
+
+ if (tcfg->type == TYPEC_PORT_DFP)
+ return 0;
+
+ /* Get the preferred power role for drp */
+ ret = typec_get_power_role(tcpci->dev);
+ if (ret < 0) {
+ dev_err(tcpci->dev, "typec preferred role is wrong!\n");
+ return ret;
+ }
+ tcfg->default_role = ret;
+sink:
+ /* Get sink power capability */
+ tcfg->nr_snk_pdo = device_property_read_u32_array(tcpci->dev,
+ "snk-pdos", NULL, 0);
+ if (tcfg->nr_snk_pdo <= 0) {
+ dev_err(tcpci->dev, "typec sink pdo is missing!\n");
+ return -EINVAL;
+ }
+
+ tcfg->snk_pdo = devm_kzalloc(tcpci->dev,
+ sizeof(*tcfg->snk_pdo) * tcfg->nr_snk_pdo, GFP_KERNEL);
+ if (!tcfg->snk_pdo)
+ return -ENOMEM;
+
+ ret = device_property_read_u32_array(tcpci->dev, "snk-pdos",
+ tcfg->snk_pdo, tcfg->nr_snk_pdo);
+ if (ret) {
+ dev_err(tcpci->dev, "Failed to read sink pdo!\n");
+ return -EINVAL;
+ }
+
+ if (device_property_read_u32(tcpci->dev, "max-snk-mv",
+ &tcfg->max_snk_mv) ||
+ device_property_read_u32(tcpci->dev, "max-snk-ma",
+ &tcfg->max_snk_ma) ||
+ device_property_read_u32(tcpci->dev, "op-snk-mw",
+ &tcfg->operating_snk_mw)) {
+ dev_err(tcpci->dev, "Failed to read sink capability!\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static int tcpci_probe(struct i2c_client *client,
+ const struct i2c_device_id *i2c_id)
+{
+ struct tcpci *tcpci;
+ int err;
+
+ tcpci = devm_kzalloc(&client->dev, sizeof(*tcpci), GFP_KERNEL);
+ if (!tcpci)
+ return -ENOMEM;
+
+ tcpci->client = client;
+ tcpci->dev = &client->dev;
+ i2c_set_clientdata(client, tcpci);
+ tcpci->regmap = devm_regmap_init_i2c(client, &tcpci_regmap_config);
+ if (IS_ERR(tcpci->regmap))
+ return PTR_ERR(tcpci->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;
+
+ /* Disable chip interrupts */
+ tcpci_write16(tcpci, TCPC_ALERT_MASK, 0);
+
+ tcpci->port = tcpm_register_port(tcpci->dev, &tcpci->tcpc);
+ if (IS_ERR(tcpci->port))
+ return PTR_ERR(tcpci->port);
+
+ return devm_request_threaded_irq(tcpci->dev, client->irq, NULL,
+ tcpci_irq,
+ IRQF_ONESHOT | IRQF_TRIGGER_LOW,
+ dev_name(tcpci->dev), tcpci);
+}
+
+static int tcpci_remove(struct i2c_client *client)
+{
+ struct tcpci *tcpci = i2c_get_clientdata(client);
+
+ tcpm_unregister_port(tcpci->port);
+
+ 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 = "usb,tcpci", },
+ {},
+};
+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");
diff --git a/drivers/usb/typec/tcpci.h b/drivers/usb/typec/tcpci.h
new file mode 100644
index 0000000..10b04c8
--- /dev/null
+++ b/drivers/usb/typec/tcpci.h
@@ -0,0 +1,133 @@
+/*
+ * Copyright 2015-2017 Google, Inc
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * 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_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
+
+#endif /* __LINUX_USB_TCPCI_H */
--
2.6.6
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