From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 088D5C43334 for ; Mon, 25 Jul 2022 07:06:58 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 25DA310FBE9; Mon, 25 Jul 2022 07:06:57 +0000 (UTC) Received: from mailgw01.mediatek.com (unknown [60.244.123.138]) by gabe.freedesktop.org (Postfix) with ESMTPS id C59FD10FC09 for ; Mon, 25 Jul 2022 07:06:55 +0000 (UTC) X-UUID: 90b453bb580944f8883dbe434af52809-20220725 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.8, REQID:33a33025-2038-4ef5-a669-3b329abc2c66, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:45,FILE:0,RULE:Release_Ham,ACT ION:release,TS:45 X-CID-INFO: VERSION:1.1.8, REQID:33a33025-2038-4ef5-a669-3b329abc2c66, OB:0, LOB: 0,IP:0,URL:0,TC:0,Content:0,EDM:0,RT:0,SF:45,FILE:0,RULE:Release_Ham,ACTIO N:release,TS:45 X-CID-META: VersionHash:0f94e32, CLOUDID:b6ae67b3-06d2-48ef-b2dd-540836705165, C OID:d24ea36d58f7,Recheck:0,SF:28|17|19|48,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,QS:nil,BEC:nil,COL:0 X-UUID: 90b453bb580944f8883dbe434af52809-20220725 Received: from mtkmbs10n1.mediatek.inc [(172.21.101.34)] by mailgw01.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 49096496; Mon, 25 Jul 2022 15:06:46 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.792.3; Mon, 25 Jul 2022 15:06:45 +0800 Received: from mhfsdcap04 (10.17.3.154) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.792.15 via Frontend Transport; Mon, 25 Jul 2022 15:06:43 +0800 Message-ID: <1f1a37daf6f3c19a2506f53689c8efbed2b716c3.camel@mediatek.com> Subject: Re: [PATCH v6 08/13] usb: typec: tcpci_mt6370: Add MediaTek MT6370 tcpci driver From: Chunfeng Yun To: ChiaEn Wu , , , , , , , , , , , , , , , , , Date: Mon, 25 Jul 2022 15:06:43 +0800 In-Reply-To: <20220722102407.2205-9-peterwu.pub@gmail.com> References: <20220722102407.2205-1-peterwu.pub@gmail.com> <20220722102407.2205-9-peterwu.pub@gmail.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.28.5-0ubuntu0.18.04.2 MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-MTK: N X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-fbdev@vger.kernel.org, szunichen@gmail.com, alice_chen@richtek.com, linux-pm@vger.kernel.org, linux-iio@vger.kernel.org, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, cy_huang@richtek.com, chiaen_wu@richtek.com, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-leds@vger.kernel.org, AngeloGioacchino Del Regno Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Fri, 2022-07-22 at 18:24 +0800, ChiaEn Wu wrote: > From: ChiYuan Huang > > The MediaTek MT6370 is a highly-integrated smart power management IC, > which includes a single cell Li-Ion/Li-Polymer switching battery > charger, a USB Type-C & Power Delivery (PD) controller, dual > Flash LED current sources, a RGB LED driver, a backlight WLED driver, > a display bias driver and a general LDO for portable devices. > > Add support for the Type-C & Power Delivery controller in > MediaTek MT6370 IC. > > Signed-off-by: ChiYuan Huang > Reviewed-by: AngeloGioacchino Del Regno < > angelogioacchino.delregno@collabora.com> > --- > > v6 > - Convert tcpci as device resource managed with > 'devm_add_action_or_reset' API. > - Refine remvoe callback. > - Refine the commit text from 'This commit add' to 'Add'. > --- > drivers/usb/typec/tcpm/Kconfig | 11 ++ > drivers/usb/typec/tcpm/Makefile | 1 + > drivers/usb/typec/tcpm/tcpci_mt6370.c | 208 > ++++++++++++++++++++++++++++++++++ > 3 files changed, 220 insertions(+) > create mode 100644 drivers/usb/typec/tcpm/tcpci_mt6370.c > > diff --git a/drivers/usb/typec/tcpm/Kconfig > b/drivers/usb/typec/tcpm/Kconfig > index 073fd2e..e6b88ca 100644 > --- a/drivers/usb/typec/tcpm/Kconfig > +++ b/drivers/usb/typec/tcpm/Kconfig > @@ -35,6 +35,17 @@ config TYPEC_MT6360 > USB Type-C. It works with Type-C Port Controller Manager > to provide USB PD and USB Type-C functionalities. > > +config TYPEC_TCPCI_MT6370 > + tristate "MediaTek MT6370 Type-C driver" > + depends on MFD_MT6370 > + help > + MediaTek MT6370 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. > + > + This driver can also be built as a module. The module > + will be called "tcpci_mt6370". > + > config TYPEC_TCPCI_MAXIM > tristate "Maxim TCPCI based Type-C chip driver" > help > diff --git a/drivers/usb/typec/tcpm/Makefile > b/drivers/usb/typec/tcpm/Makefile > index 7d499f3..906d9dc 100644 > --- a/drivers/usb/typec/tcpm/Makefile > +++ b/drivers/usb/typec/tcpm/Makefile > @@ -6,4 +6,5 @@ typec_wcove-y := wcove.o > obj-$(CONFIG_TYPEC_TCPCI) += tcpci.o > obj-$(CONFIG_TYPEC_RT1711H) += tcpci_rt1711h.o > obj-$(CONFIG_TYPEC_MT6360) += tcpci_mt6360.o > +obj-$(CONFIG_TYPEC_TCPCI_MT6370) += tcpci_mt6370.o > obj-$(CONFIG_TYPEC_TCPCI_MAXIM) += tcpci_maxim.o > diff --git a/drivers/usb/typec/tcpm/tcpci_mt6370.c > b/drivers/usb/typec/tcpm/tcpci_mt6370.c > new file mode 100644 > index 0000000..4f53319 > --- /dev/null > +++ b/drivers/usb/typec/tcpm/tcpci_mt6370.c > @@ -0,0 +1,208 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (C) 2022 Richtek Technology Corp. > + * > + * Author: ChiYuan Huang > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include "tcpci.h" > + > +#define MT6370_REG_SYSCTRL8 0x9B > + > +#define MT6370_AUTOIDLE_MASK BIT(3) > + > +#define MT6370_VENDOR_ID 0x29CF > +#define MT6370_TCPC_DID_A 0x2170 > + > +struct mt6370_priv { > + struct device *dev; > + struct regulator *vbus; > + struct tcpci *tcpci; > + struct tcpci_data tcpci_data; > +}; > + > +static const struct reg_sequence mt6370_reg_init[] = { > + REG_SEQ(0xA0, 0x1, 1000), > + REG_SEQ(0x81, 0x38, 0), > + REG_SEQ(0x82, 0x82, 0), > + REG_SEQ(0xBA, 0xFC, 0), > + REG_SEQ(0xBB, 0x50, 0), > + REG_SEQ(0x9E, 0x8F, 0), > + REG_SEQ(0xA1, 0x5, 0), > + REG_SEQ(0xA2, 0x4, 0), > + REG_SEQ(0xA3, 0x4A, 0), > + REG_SEQ(0xA4, 0x01, 0), > + REG_SEQ(0x95, 0x01, 0), > + REG_SEQ(0x80, 0x71, 0), > + REG_SEQ(0x9B, 0x3A, 1000), > +}; > + > +static int mt6370_tcpc_init(struct tcpci *tcpci, struct tcpci_data > *data) > +{ > + u16 did; > + int ret; > + > + ret = regmap_register_patch(data->regmap, mt6370_reg_init, > + ARRAY_SIZE(mt6370_reg_init)); > + if (ret) > + return ret; > + > + ret = regmap_raw_read(data->regmap, TCPC_BCD_DEV, &did, > sizeof(u16)); > + if (ret) > + return ret; > + > + if (did == MT6370_TCPC_DID_A) > + return regmap_write(data->regmap, TCPC_FAULT_CTRL, > 0x80); > + > + return 0; > +} > + > +static int mt6370_tcpc_set_vconn(struct tcpci *tcpci, struct > tcpci_data *data, > + bool enable) > +{ > + return regmap_update_bits(data->regmap, MT6370_REG_SYSCTRL8, > + MT6370_AUTOIDLE_MASK, > + !enable ? MT6370_AUTOIDLE_MASK : 0); > +} > + > +static int mt6370_tcpc_set_vbus(struct tcpci *tcpci, struct > tcpci_data *data, > + bool source, bool sink) @sink is not used in this function? > +{ > + struct mt6370_priv *priv = container_of(data, struct > mt6370_priv, > + tcpci_data); > + int ret; > + > + ret = regulator_is_enabled(priv->vbus); > + if (ret < 0) > + return ret; > + > + if (ret && !source) > + return regulator_disable(priv->vbus); > + > + if (!ret && source) > + return regulator_enable(priv->vbus); > + > + return 0; > +} > + > +static irqreturn_t mt6370_irq_handler(int irq, void *dev_id) > +{ > + struct mt6370_priv *priv = dev_id; > + > + return tcpci_irq(priv->tcpci); > +} > + > +static int mt6370_check_vendor_info(struct mt6370_priv *priv) > +{ > + struct regmap *regmap = priv->tcpci_data.regmap; > + u16 vid; > + int ret; > + > + ret = regmap_raw_read(regmap, TCPC_VENDOR_ID, &vid, > sizeof(u16)); > + if (ret) > + return ret; > + > + if (vid != MT6370_VENDOR_ID) > + return dev_err_probe(priv->dev, -ENODEV, > + "Vendor ID not correct 0x%02x\n", > vid); > + > + return 0; > +} > + > +static void mt6370_unregister_tcpci_port(void *tcpci) > +{ > + tcpci_unregister_port(tcpci); > +} > + > +static int mt6370_tcpc_probe(struct platform_device *pdev) > +{ > + struct mt6370_priv *priv; > + struct device *dev = &pdev->dev; > + int irq, ret; > + > + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); > + if (!priv) > + return -ENOMEM; > + > + priv->dev = dev; > + > + priv->tcpci_data.regmap = dev_get_regmap(dev->parent, NULL); > + if (!priv->tcpci_data.regmap) > + return dev_err_probe(dev, -ENODEV, "Failed to init > regmap\n"); > + > + ret = mt6370_check_vendor_info(priv); > + if (ret) > + return ret; > + > + irq = platform_get_irq(pdev, 0); > + if (irq < 0) > + return dev_err_probe(dev, irq, "Failed to get irq\n"); > + > + /* Assign TCPCI feature and ops */ > + priv->tcpci_data.auto_discharge_disconnect = 1; > + priv->tcpci_data.init = mt6370_tcpc_init; > + priv->tcpci_data.set_vconn = mt6370_tcpc_set_vconn; > + > + priv->vbus = devm_regulator_get_optional(dev, "vbus"); > + if (!IS_ERR(priv->vbus)) > + priv->tcpci_data.set_vbus = mt6370_tcpc_set_vbus; > + > + priv->tcpci = tcpci_register_port(dev, &priv->tcpci_data); > + if (IS_ERR(priv->tcpci)) > + return dev_err_probe(dev, PTR_ERR(priv->tcpci), > + "Failed to register tcpci > port\n"); > + > + ret = devm_add_action_or_reset(dev, > mt6370_unregister_tcpci_port, > + priv->tcpci); > + if (ret) > + return ret; > + > + ret = devm_request_threaded_irq(dev, irq, NULL, > mt6370_irq_handler, > + IRQF_ONESHOT, dev_name(dev), > priv); > + if (ret) > + return dev_err_probe(dev, ret, "Failed to allocate > irq\n"); > + > + device_init_wakeup(dev, true); > + dev_pm_set_wake_irq(dev, irq); > + > + return 0; > +} > + > +static int mt6370_tcpc_remove(struct platform_device *pdev) > +{ > + dev_pm_clear_wake_irq(&pdev->dev); > + device_init_wakeup(&pdev->dev, false); > + > + return 0; > +} > + > +static const struct of_device_id mt6370_tcpc_devid_table[] = { > + { .compatible = "mediatek,mt6370-tcpc" }, > + {} > +}; > +MODULE_DEVICE_TABLE(of, mt6370_tcpc_devid_table); > + > +static struct platform_driver mt6370_tcpc_driver = { > + .driver = { > + .name = "mt6370-tcpc", > + .of_match_table = mt6370_tcpc_devid_table, > + }, > + .probe = mt6370_tcpc_probe, > + .remove = mt6370_tcpc_remove, > +}; > +module_platform_driver(mt6370_tcpc_driver); > + > +MODULE_AUTHOR("ChiYuan Huang "); > +MODULE_DESCRIPTION("MT6370 USB Type-C Port Controller Interface > Driver"); > +MODULE_LICENSE("GPL v2");