From patchwork Fri Aug 5 07:06:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: ChiaEn Wu X-Patchwork-Id: 12936966 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 95113C00140 for ; Fri, 5 Aug 2022 07:12:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=417XP0VUaPHr28qOEx+tO3462l1fmx7MuN2VICDrfwA=; b=uG9vl7YaEVMxSKyQ+pJfbIY8FU zRxIEAc8Qwf4TxC8TUmtoCGTm0DEJ2U480Im3+BjcALgmS4VBN/I8CvRsgChnkrc4hFzxoaLGGpYt qeAr+JXLRFHlhIOIHiHV9c7fnkisfGZ07CZBLXvHjEro5IeX3735SwGGFz+rq79qVcECGE9OQkCBT zA8Yx6Z+exvwfwgf8Sd8N+0k1NGCIYG4Z/hAjPrMt8h5KUohXUguCTf0VMM4mOvrJFQoaCIB+iPsN NfwaiEzBuPsosh0z/j0yVFbhP3n0yxFpOrxl9gCUZmrJ7PD5XlUQOxQ7ntaG7i/xsuoGCyJiUPpOK 94skW9vw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1oJrVi-00Ck8g-Qs; Fri, 05 Aug 2022 07:12:42 +0000 Received: from mail-pj1-x1032.google.com ([2607:f8b0:4864:20::1032]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1oJrQg-00ChOn-Ug; Fri, 05 Aug 2022 07:07:32 +0000 Received: by mail-pj1-x1032.google.com with SMTP id p14-20020a17090a74ce00b001f4d04492faso1967439pjl.4; Fri, 05 Aug 2022 00:07:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc; bh=417XP0VUaPHr28qOEx+tO3462l1fmx7MuN2VICDrfwA=; b=hlcX5ARqYXbcodPXrrwTrSfCXtDRzFWh59mDy+qRZwVOBUGwuhJ64tEIQ+9vhUkiRr M2pFmdOv5YokV7Fz/Bc3GTgADLMRG1Y1ndfnJOJHW693fzSruRPLV0q3qKCrSKjRjbLZ 4fWfLtmIAsOy/n/mGjJ3yKvd3HmOaHYUJJ4SpDs0PML9TcKgkzAgx7G/aTE/Ci9z+D2B 1Gu3rYSJKuEZYo1lI0t2FupxFfWYdENn+aqopaqFyDRC2sunlhrHRDT080vZta1nQQ9P 1VLFq39P4NXrkwzfcWtMWHlcUmUMb41fgfDlUEQDIPFWkAB7wVa894PTqkagCxa7E6fw kMbA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc; bh=417XP0VUaPHr28qOEx+tO3462l1fmx7MuN2VICDrfwA=; b=ZZD0N/itW9GOK69wSRZsQEhsY9ess0X/rdD9jZsRkzF/IOh2wHnRiF1UgvpMcZb79Z peL0XpOOc0D93IvO8gKvnMCWhoXC7DAtVoBD+1k1JU8ytIAzFvr78zc28eoglelbdtus Q0zNrfj4PSdFiLqMyxQOD0fQHSYygvstdSrBa7k6IEl7vFAq6rIEQ5UDmYXncdVbRxA3 oIsmb20xhzIEMy5jrikGoIizpbTu6GT2u4biR0+45Kj8XoKrPOvAF5VKUTu0pfEO/733 BKMY8BDbXw1OR+mvyOfD4VRneHBaEWZ7aSRnIue/U9nn9vhBaZkJgpecEzr9+c2J9Den hhjA== X-Gm-Message-State: ACgBeo1rKDDr+3/nU4k/HdEeAsxxhAPjANTngTtgw1fGIlSrN7G18vuh 1xwWdwcnqkRhjJaSr3B+C1k= X-Google-Smtp-Source: AA6agR7sLdYbldfWGmFXluGl1w4qbpxl1uqy/AE/SBXgssrZTmYD9dsOrwVN78p6tqY4JsculuvrjA== X-Received: by 2002:a17:90b:f8c:b0:1f2:ea98:a273 with SMTP id ft12-20020a17090b0f8c00b001f2ea98a273mr6234868pjb.155.1659683245059; Fri, 05 Aug 2022 00:07:25 -0700 (PDT) Received: from RD-3580-24288.rt.l (42-72-229-62.emome-ip.hinet.net. [42.72.229.62]) by smtp.gmail.com with ESMTPSA id i5-20020a056a00224500b00525343b5047sm2191616pfu.76.2022.08.05.00.07.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 05 Aug 2022 00:07:24 -0700 (PDT) From: ChiaEn Wu To: lee.jones@linaro.org, daniel.thompson@linaro.org, jingoohan1@gmail.com, pavel@ucw.cz, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, matthias.bgg@gmail.com, sre@kernel.org, chunfeng.yun@mediatek.com, gregkh@linuxfoundation.org, jic23@kernel.org, lars@metafoo.de, lgirdwood@gmail.com, broonie@kernel.org, linux@roeck-us.net, heikki.krogerus@linux.intel.com, deller@gmx.de, andy.shevchenko@gmail.com Cc: chiaen_wu@richtek.com, alice_chen@richtek.com, cy_huang@richtek.com, dri-devel@lists.freedesktop.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-iio@vger.kernel.org, linux-fbdev@vger.kernel.org, szunichen@gmail.com, AngeloGioacchino Del Regno Subject: [PATCH v7 08/13] usb: typec: tcpci_mt6370: Add MediaTek MT6370 tcpci driver Date: Fri, 5 Aug 2022 15:06:05 +0800 Message-Id: <20220805070610.3516-9-peterwu.pub@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220805070610.3516-1-peterwu.pub@gmail.com> References: <20220805070610.3516-1-peterwu.pub@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220805_000731_056026_40A65A00 X-CRM114-Status: GOOD ( 23.16 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org 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 a support for the Type-C & Power Delivery controller in MediaTek MT6370 IC. Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Guenter Roeck Signed-off-by: ChiYuan Huang Signed-off-by: ChiaEn Wu Reviewed-by: Andy Shevchenko Reviewed-by: Heikki Krogerus --- v7 - Revise 'devm_add_action_or_reset(dev, ...)' to one line - Revise 'return regmap_update_bits(...)' with using positive conditional --- drivers/usb/typec/tcpm/Kconfig | 11 ++ drivers/usb/typec/tcpm/Makefile | 1 + drivers/usb/typec/tcpm/tcpci_mt6370.c | 207 ++++++++++++++++++++++++++++++++++ 3 files changed, 219 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..c5bb201 --- /dev/null +++ b/drivers/usb/typec/tcpm/tcpci_mt6370.c @@ -0,0 +1,207 @@ +// 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 + +#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 ? 0 : MT6370_AUTOIDLE_MASK); +} + +static int mt6370_tcpc_set_vbus(struct tcpci *tcpci, struct tcpci_data *data, + bool source, bool sink) +{ + 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");