usb typec: mt6360: Add support for mt6360 Type-C driver (e1aefcdd) · Commits · 戴 / test

drivers/usb/typec/tcpm/Kconfig

+8 −0

Original line number	Diff line number	Diff line
		@@ -27,6 +27,14 @@ config TYPEC_RT1711H
		Type-C Port Controller Manager to provide USB PD and USB
		Type-C functionalities.

		config TYPEC_MT6360
		tristate "Mediatek MT6360 Type-C driver"
		depends on MFD_MT6360
		help
		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.

		endif # TYPEC_TCPCI

		config TYPEC_FUSB302

drivers/usb/typec/tcpm/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -5,3 +5,4 @@ obj-$(CONFIG_TYPEC_WCOVE) += typec_wcove.o
		typec_wcove-y := wcove.o
		obj-$(CONFIG_TYPEC_TCPCI) += tcpci.o
		obj-$(CONFIG_TYPEC_RT1711H) += tcpci_rt1711h.o
		obj-$(CONFIG_TYPEC_MT6360) += tcpci_mt6360.o

drivers/usb/typec/tcpm/tcpci_mt6360.c

0 → 100644

+212 −0

Original line number	Diff line number	Diff line
		// SPDX-License-Identifier: GPL-2.0-only
		/*
		* Copyright (C) 2020 MediaTek Inc.
		*
		* Author: ChiYuan Huang <cy_huang@richtek.com>
		*/

		#include <linux/interrupt.h>
		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/of.h>
		#include <linux/platform_device.h>
		#include <linux/regmap.h>
		#include <linux/usb/tcpm.h>

		#include "tcpci.h"

		#define MT6360_REG_VCONNCTRL1 0x8C
		#define MT6360_REG_MODECTRL2 0x8F
		#define MT6360_REG_SWRESET 0xA0
		#define MT6360_REG_DEBCTRL1 0xA1
		#define MT6360_REG_DRPCTRL1 0xA2
		#define MT6360_REG_DRPCTRL2 0xA3
		#define MT6360_REG_I2CTORST 0xBF
		#define MT6360_REG_RXCTRL2 0xCF
		#define MT6360_REG_CTDCTRL2 0xEC

		/* MT6360_REG_VCONNCTRL1 */
		#define MT6360_VCONNCL_ENABLE BIT(0)
		/* MT6360_REG_RXCTRL2 */
		#define MT6360_OPEN40M_ENABLE BIT(7)
		/* MT6360_REG_CTDCTRL2 */
		#define MT6360_RPONESHOT_ENABLE BIT(6)

		struct mt6360_tcpc_info {
		struct tcpci_data tdata;
		struct tcpci *tcpci;
		struct device *dev;
		int irq;
		};

		static inline int mt6360_tcpc_read16(struct regmap *regmap,
		unsigned int reg, u16 *val)
		{
		return regmap_raw_read(regmap, reg, val, sizeof(u16));
		}

		static inline int mt6360_tcpc_write16(struct regmap *regmap,
		unsigned int reg, u16 val)
		{
		return regmap_raw_write(regmap, reg, &val, sizeof(u16));
		}

		static int mt6360_tcpc_init(struct tcpci tcpci, struct tcpci_data tdata)
		{
		struct regmap *regmap = tdata->regmap;
		int ret;

		ret = regmap_write(regmap, MT6360_REG_SWRESET, 0x01);
		if (ret)
		return ret;

		/* after reset command, wait 1~2ms to wait IC action */
		usleep_range(1000, 2000);

		/* write all alert to masked */
		ret = mt6360_tcpc_write16(regmap, TCPC_ALERT_MASK, 0);
		if (ret)
		return ret;

		/* config I2C timeout reset enable , and timeout to 200ms */
		ret = regmap_write(regmap, MT6360_REG_I2CTORST, 0x8F);
		if (ret)
		return ret;

		/* config CC Detect Debounce : 26.7val us /
		ret = regmap_write(regmap, MT6360_REG_DEBCTRL1, 0x10);
		if (ret)
		return ret;

		/* DRP Toggle Cycle : 51.2 + 6.4val ms /
		ret = regmap_write(regmap, MT6360_REG_DRPCTRL1, 4);
		if (ret)
		return ret;

		/* DRP Duyt Ctrl : dcSRC: /1024 */
		ret = mt6360_tcpc_write16(regmap, MT6360_REG_DRPCTRL2, 330);
		if (ret)
		return ret;

		/* Enable VCONN Current Limit function */
		ret = regmap_update_bits(regmap, MT6360_REG_VCONNCTRL1, MT6360_VCONNCL_ENABLE,
		MT6360_VCONNCL_ENABLE);
		if (ret)
		return ret;

		/* Enable cc open 40ms when pmic send vsysuv signal */
		ret = regmap_update_bits(regmap, MT6360_REG_RXCTRL2, MT6360_OPEN40M_ENABLE,
		MT6360_OPEN40M_ENABLE);
		if (ret)
		return ret;

		/* Enable Rpdet oneshot detection */
		ret = regmap_update_bits(regmap, MT6360_REG_CTDCTRL2, MT6360_RPONESHOT_ENABLE,
		MT6360_RPONESHOT_ENABLE);
		if (ret)
		return ret;

		/* Set shipping mode off, AUTOIDLE on */
		return regmap_write(regmap, MT6360_REG_MODECTRL2, 0x7A);
		}

		static irqreturn_t mt6360_irq(int irq, void *dev_id)
		{
		struct mt6360_tcpc_info *mti = dev_id;

		return tcpci_irq(mti->tcpci);
		}

		static int mt6360_tcpc_probe(struct platform_device *pdev)
		{
		struct mt6360_tcpc_info *mti;
		int ret;

		mti = devm_kzalloc(&pdev->dev, sizeof(*mti), GFP_KERNEL);
		if (!mti)
		return -ENOMEM;

		mti->dev = &pdev->dev;

		mti->tdata.regmap = dev_get_regmap(pdev->dev.parent, NULL);
		if (!mti->tdata.regmap) {
		dev_err(&pdev->dev, "Failed to get parent regmap\n");
		return -ENODEV;
		}

		mti->irq = platform_get_irq_byname(pdev, "PD_IRQB");
		if (mti->irq < 0)
		return mti->irq;

		mti->tdata.init = mt6360_tcpc_init;
		mti->tcpci = tcpci_register_port(&pdev->dev, &mti->tdata);
		if (IS_ERR(mti->tcpci)) {
		dev_err(&pdev->dev, "Failed to register tcpci port\n");
		return PTR_ERR(mti->tcpci);
		}

		ret = devm_request_threaded_irq(mti->dev, mti->irq, NULL, mt6360_irq, IRQF_ONESHOT,
		dev_name(&pdev->dev), mti);
		if (ret) {
		dev_err(mti->dev, "Failed to register irq\n");
		tcpci_unregister_port(mti->tcpci);
		return ret;
		}

		device_init_wakeup(&pdev->dev, true);
		platform_set_drvdata(pdev, mti);

		return 0;
		}

		static int mt6360_tcpc_remove(struct platform_device *pdev)
		{
		struct mt6360_tcpc_info *mti = platform_get_drvdata(pdev);

		disable_irq(mti->irq);
		tcpci_unregister_port(mti->tcpci);
		return 0;
		}

		static int __maybe_unused mt6360_tcpc_suspend(struct device *dev)
		{
		struct mt6360_tcpc_info *mti = dev_get_drvdata(dev);

		if (device_may_wakeup(dev))
		enable_irq_wake(mti->irq);

		return 0;
		}

		static int __maybe_unused mt6360_tcpc_resume(struct device *dev)
		{
		struct mt6360_tcpc_info *mti = dev_get_drvdata(dev);

		if (device_may_wakeup(dev))
		disable_irq_wake(mti->irq);

		return 0;
		}

		static SIMPLE_DEV_PM_OPS(mt6360_tcpc_pm_ops, mt6360_tcpc_suspend, mt6360_tcpc_resume);

		static const struct of_device_id __maybe_unused mt6360_tcpc_of_id[] = {
		{ .compatible = "mediatek,mt6360-tcpc", },
		{},
		};
		MODULE_DEVICE_TABLE(of, mt6360_tcpc_of_id);

		static struct platform_driver mt6360_tcpc_driver = {
		.driver = {
		.name = "mt6360-tcpc",
		.pm = &mt6360_tcpc_pm_ops,
		.of_match_table = mt6360_tcpc_of_id,
		},
		.probe = mt6360_tcpc_probe,
		.remove = mt6360_tcpc_remove,
		};
		module_platform_driver(mt6360_tcpc_driver);

		MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
		MODULE_DESCRIPTION("MT6360 USB Type-C Port Controller Interface Driver");
		MODULE_LICENSE("GPL v2");

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