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usb typec: mt6360: Add support for mt6360 Type-C driver
Mediatek MT6360 is a multi-functional IC that includes USB Type-C. It works with Type-C Port Controller Manager to provide USB PD and USB Type-C functionalities. Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: ChiYuan Huang <cy_huang@richtek.com> Link: https://lore.kernel.org/r/1598928042-22115-1-git-send-email-u0084500@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
ChiYuan Huang
Greg Kroah-Hartman
parent
f5f875b561
commit
e1aefcdd39
@ -27,6 +27,14 @@ config TYPEC_RT1711H
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Type-C Port Controller Manager to provide USB PD and USB
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Type-C functionalities.
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config TYPEC_MT6360
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tristate "Mediatek MT6360 Type-C driver"
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depends on MFD_MT6360
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help
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Mediatek MT6360 is a multi-functional IC that includes
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USB Type-C. It works with Type-C Port Controller Manager
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to provide USB PD and USB Type-C functionalities.
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endif # TYPEC_TCPCI
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config TYPEC_FUSB302
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@ -5,3 +5,4 @@ obj-$(CONFIG_TYPEC_WCOVE) += typec_wcove.o
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typec_wcove-y := wcove.o
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obj-$(CONFIG_TYPEC_TCPCI) += tcpci.o
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obj-$(CONFIG_TYPEC_RT1711H) += tcpci_rt1711h.o
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obj-$(CONFIG_TYPEC_MT6360) += tcpci_mt6360.o
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212
drivers/usb/typec/tcpm/tcpci_mt6360.c
Normal file
212
drivers/usb/typec/tcpm/tcpci_mt6360.c
Normal file
@ -0,0 +1,212 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Copyright (C) 2020 MediaTek Inc.
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*
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* Author: ChiYuan Huang <cy_huang@richtek.com>
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*/
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#include <linux/interrupt.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/usb/tcpm.h>
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#include "tcpci.h"
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#define MT6360_REG_VCONNCTRL1 0x8C
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#define MT6360_REG_MODECTRL2 0x8F
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#define MT6360_REG_SWRESET 0xA0
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#define MT6360_REG_DEBCTRL1 0xA1
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#define MT6360_REG_DRPCTRL1 0xA2
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#define MT6360_REG_DRPCTRL2 0xA3
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#define MT6360_REG_I2CTORST 0xBF
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#define MT6360_REG_RXCTRL2 0xCF
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#define MT6360_REG_CTDCTRL2 0xEC
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/* MT6360_REG_VCONNCTRL1 */
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#define MT6360_VCONNCL_ENABLE BIT(0)
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/* MT6360_REG_RXCTRL2 */
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#define MT6360_OPEN40M_ENABLE BIT(7)
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/* MT6360_REG_CTDCTRL2 */
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#define MT6360_RPONESHOT_ENABLE BIT(6)
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struct mt6360_tcpc_info {
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struct tcpci_data tdata;
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struct tcpci *tcpci;
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struct device *dev;
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int irq;
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};
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static inline int mt6360_tcpc_read16(struct regmap *regmap,
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unsigned int reg, u16 *val)
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{
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return regmap_raw_read(regmap, reg, val, sizeof(u16));
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}
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static inline int mt6360_tcpc_write16(struct regmap *regmap,
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unsigned int reg, u16 val)
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{
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return regmap_raw_write(regmap, reg, &val, sizeof(u16));
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}
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static int mt6360_tcpc_init(struct tcpci *tcpci, struct tcpci_data *tdata)
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{
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struct regmap *regmap = tdata->regmap;
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int ret;
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ret = regmap_write(regmap, MT6360_REG_SWRESET, 0x01);
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if (ret)
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return ret;
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/* after reset command, wait 1~2ms to wait IC action */
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usleep_range(1000, 2000);
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/* write all alert to masked */
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ret = mt6360_tcpc_write16(regmap, TCPC_ALERT_MASK, 0);
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if (ret)
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return ret;
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/* config I2C timeout reset enable , and timeout to 200ms */
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ret = regmap_write(regmap, MT6360_REG_I2CTORST, 0x8F);
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if (ret)
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return ret;
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/* config CC Detect Debounce : 26.7*val us */
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ret = regmap_write(regmap, MT6360_REG_DEBCTRL1, 0x10);
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if (ret)
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return ret;
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/* DRP Toggle Cycle : 51.2 + 6.4*val ms */
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ret = regmap_write(regmap, MT6360_REG_DRPCTRL1, 4);
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if (ret)
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return ret;
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/* DRP Duyt Ctrl : dcSRC: /1024 */
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ret = mt6360_tcpc_write16(regmap, MT6360_REG_DRPCTRL2, 330);
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if (ret)
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return ret;
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/* Enable VCONN Current Limit function */
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ret = regmap_update_bits(regmap, MT6360_REG_VCONNCTRL1, MT6360_VCONNCL_ENABLE,
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MT6360_VCONNCL_ENABLE);
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if (ret)
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return ret;
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/* Enable cc open 40ms when pmic send vsysuv signal */
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ret = regmap_update_bits(regmap, MT6360_REG_RXCTRL2, MT6360_OPEN40M_ENABLE,
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MT6360_OPEN40M_ENABLE);
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if (ret)
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return ret;
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/* Enable Rpdet oneshot detection */
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ret = regmap_update_bits(regmap, MT6360_REG_CTDCTRL2, MT6360_RPONESHOT_ENABLE,
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MT6360_RPONESHOT_ENABLE);
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if (ret)
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return ret;
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/* Set shipping mode off, AUTOIDLE on */
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return regmap_write(regmap, MT6360_REG_MODECTRL2, 0x7A);
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}
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static irqreturn_t mt6360_irq(int irq, void *dev_id)
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{
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struct mt6360_tcpc_info *mti = dev_id;
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return tcpci_irq(mti->tcpci);
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}
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static int mt6360_tcpc_probe(struct platform_device *pdev)
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{
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struct mt6360_tcpc_info *mti;
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int ret;
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mti = devm_kzalloc(&pdev->dev, sizeof(*mti), GFP_KERNEL);
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if (!mti)
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return -ENOMEM;
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mti->dev = &pdev->dev;
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mti->tdata.regmap = dev_get_regmap(pdev->dev.parent, NULL);
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if (!mti->tdata.regmap) {
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dev_err(&pdev->dev, "Failed to get parent regmap\n");
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return -ENODEV;
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}
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mti->irq = platform_get_irq_byname(pdev, "PD_IRQB");
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if (mti->irq < 0)
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return mti->irq;
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mti->tdata.init = mt6360_tcpc_init;
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mti->tcpci = tcpci_register_port(&pdev->dev, &mti->tdata);
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if (IS_ERR(mti->tcpci)) {
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dev_err(&pdev->dev, "Failed to register tcpci port\n");
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return PTR_ERR(mti->tcpci);
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}
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ret = devm_request_threaded_irq(mti->dev, mti->irq, NULL, mt6360_irq, IRQF_ONESHOT,
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dev_name(&pdev->dev), mti);
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if (ret) {
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dev_err(mti->dev, "Failed to register irq\n");
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tcpci_unregister_port(mti->tcpci);
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return ret;
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}
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device_init_wakeup(&pdev->dev, true);
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platform_set_drvdata(pdev, mti);
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return 0;
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}
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static int mt6360_tcpc_remove(struct platform_device *pdev)
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{
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struct mt6360_tcpc_info *mti = platform_get_drvdata(pdev);
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disable_irq(mti->irq);
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tcpci_unregister_port(mti->tcpci);
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return 0;
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}
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static int __maybe_unused mt6360_tcpc_suspend(struct device *dev)
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{
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struct mt6360_tcpc_info *mti = dev_get_drvdata(dev);
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if (device_may_wakeup(dev))
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enable_irq_wake(mti->irq);
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return 0;
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}
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static int __maybe_unused mt6360_tcpc_resume(struct device *dev)
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{
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struct mt6360_tcpc_info *mti = dev_get_drvdata(dev);
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if (device_may_wakeup(dev))
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disable_irq_wake(mti->irq);
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return 0;
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}
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static SIMPLE_DEV_PM_OPS(mt6360_tcpc_pm_ops, mt6360_tcpc_suspend, mt6360_tcpc_resume);
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static const struct of_device_id __maybe_unused mt6360_tcpc_of_id[] = {
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{ .compatible = "mediatek,mt6360-tcpc", },
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{},
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};
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MODULE_DEVICE_TABLE(of, mt6360_tcpc_of_id);
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static struct platform_driver mt6360_tcpc_driver = {
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.driver = {
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.name = "mt6360-tcpc",
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.pm = &mt6360_tcpc_pm_ops,
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.of_match_table = mt6360_tcpc_of_id,
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},
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.probe = mt6360_tcpc_probe,
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.remove = mt6360_tcpc_remove,
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};
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module_platform_driver(mt6360_tcpc_driver);
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MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
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MODULE_DESCRIPTION("MT6360 USB Type-C Port Controller Interface Driver");
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MODULE_LICENSE("GPL v2");
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