From patchwork Tue Feb 1 03:24:40 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Samuel Holland X-Patchwork-Id: 12731368 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A4852C4321E for ; Tue, 1 Feb 2022 03:24:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233056AbiBADYs (ORCPT ); Mon, 31 Jan 2022 22:24:48 -0500 Received: from out3-smtp.messagingengine.com ([66.111.4.27]:53337 "EHLO out3-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233048AbiBADYr (ORCPT ); Mon, 31 Jan 2022 22:24:47 -0500 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailout.nyi.internal (Postfix) with ESMTP id 510E85C0110; Mon, 31 Jan 2022 22:24:47 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Mon, 31 Jan 2022 22:24:47 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sholland.org; h= cc:cc:content-transfer-encoding:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:sender :subject:subject:to:to; s=fm1; bh=MOs0mDPiNhxCpqJpe3VvuM0IZ1QB6n XIwAicmCLm8dI=; b=ZKi1lcjAbXjMbJnHaFXZVMbuwdKTmm7xdD8cdC20LlVMm0 MZra6p8uoYmUrro+SyjDHB6zLvqLlQCVY7FKFnyFh8qtLS6u4l3Rd70uzCq0vuir KvDWbhr2XgCVymE6NruH2JwrStGKMpwUyl9rnKYtWzZMM3soqSHn2YXhlfARiFe+ L1U6PULmtC3tyIxTCy7OEaxYULDp73SOBBmgaqnVksfNey2zVvy11hcrFk/gyMoo Mp4myKfqnlh/tHpHCrhburq4e0++RsmTUy3CGsqlISOXp3JnkwsoSJnTnRx9Wyqr q/d3n5g+0bQblQUecj2cy6uDC/AJ1CvQZV0ue+Yw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding:date:date :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:sender:subject:subject:to:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm2; bh=MOs0mD PiNhxCpqJpe3VvuM0IZ1QB6nXIwAicmCLm8dI=; b=YcZuZkQh7NwFcqdIoMWIK7 saYIpVl1WupLF259899HYB1fMyNJoedx7J1ciP/OhK+iyZVssXqoHwGuRDiIE7Ok zxiP9sIOEO+7CDSbYg6oTwf5sOSlU+/Lc/ajrZQ00dVTN1XBUg8uqcM8VCyoOQ/L B0pHsFHZ7OgkpVbKie6abywI1git0KsiGoRQ+NUaEvNGcq7bQXuzdXXujU+6HHDZ Ko/yCbxNbvDlDcqqDQWMr4hWW7M8wrPE68m27tWiA4jyX3A7inVKzTqtWvf23kWe uLjLgmAkXsY2JpWUeKbmskzEo6UEv9GpfBk0hIiU4WuEEpVVjsynmKqlS8SE2BcQ == X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvvddrgedvgdehkecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefhvffufffkofgjfhgggfestdekredtredttdenucfhrhhomhepufgrmhhuvghl ucfjohhllhgrnhguuceoshgrmhhuvghlsehshhholhhlrghnugdrohhrgheqnecuggftrf grthhtvghrnhepudfhjeefvdfhgfefheetgffhieeigfefhefgvddvveefgeejheejvdfg jeehueeinecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomh epshgrmhhuvghlsehshhholhhlrghnugdrohhrgh X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 31 Jan 2022 22:24:46 -0500 (EST) From: Samuel Holland To: Heikki Krogerus , Guenter Roeck , Greg Kroah-Hartman , Rob Herring , devicetree@vger.kernel.org Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Samuel Holland Subject: [PATCH 4/4] usb: typec: Support the WUSB3801 port controller Date: Mon, 31 Jan 2022 21:24:40 -0600 Message-Id: <20220201032440.5196-4-samuel@sholland.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20220201032440.5196-1-samuel@sholland.org> References: <20220201032440.5196-1-samuel@sholland.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org WUSB3801 features a configurable port type, accessory detection, and plug orientation detection. It provides a hardware "ID" pin output for compatibility with USB 2.0 OTG PHYs. Add a typec class driver for it. Signed-off-by: Samuel Holland --- drivers/usb/typec/Kconfig | 10 + drivers/usb/typec/Makefile | 1 + drivers/usb/typec/wusb3801.c | 445 +++++++++++++++++++++++++++++++++++ 3 files changed, 456 insertions(+) create mode 100644 drivers/usb/typec/wusb3801.c diff --git a/drivers/usb/typec/Kconfig b/drivers/usb/typec/Kconfig index ab480f38523a..74acde9fc09f 100644 --- a/drivers/usb/typec/Kconfig +++ b/drivers/usb/typec/Kconfig @@ -88,6 +88,16 @@ config TYPEC_QCOM_PMIC It will also enable the VBUS output to connected devices when a DFP connection is made. +config TYPEC_WUSB3801 + tristate "Willsemi WUSB3801 Type-C port controller driver" + depends on I2C + select REGMAP_I2C + help + Say Y or M here if your system has a WUSB3801 Type-C port controller. + + If you choose to build this driver as a dynamically linked module, the + module will be called wusb3801.ko. + source "drivers/usb/typec/mux/Kconfig" source "drivers/usb/typec/altmodes/Kconfig" diff --git a/drivers/usb/typec/Makefile b/drivers/usb/typec/Makefile index 57870a2bd787..3b722ec28d99 100644 --- a/drivers/usb/typec/Makefile +++ b/drivers/usb/typec/Makefile @@ -9,4 +9,5 @@ obj-$(CONFIG_TYPEC_TPS6598X) += tipd/ obj-$(CONFIG_TYPEC_HD3SS3220) += hd3ss3220.o obj-$(CONFIG_TYPEC_QCOM_PMIC) += qcom-pmic-typec.o obj-$(CONFIG_TYPEC_STUSB160X) += stusb160x.o +obj-$(CONFIG_TYPEC_WUSB3801) += wusb3801.o obj-$(CONFIG_TYPEC) += mux/ diff --git a/drivers/usb/typec/wusb3801.c b/drivers/usb/typec/wusb3801.c new file mode 100644 index 000000000000..e4ff37bcce9c --- /dev/null +++ b/drivers/usb/typec/wusb3801.c @@ -0,0 +1,445 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Willsemi WUSB3801 Type-C port controller driver + * + * Copyright (C) 2022 Samuel Holland + */ + +#include +#include +#include +#include +#include + +#define WUSB3801_REG_DEVICE_ID 0x01 +#define WUSB3801_REG_CTRL0 0x02 +#define WUSB3801_REG_INT 0x03 +#define WUSB3801_REG_STAT 0x04 +#define WUSB3801_REG_CTRL1 0x05 +#define WUSB3801_REG_TEST00 0x06 +#define WUSB3801_REG_TEST01 0x07 +#define WUSB3801_REG_TEST02 0x08 +#define WUSB3801_REG_TEST03 0x09 +#define WUSB3801_REG_TEST04 0x0a +#define WUSB3801_REG_TEST05 0x0b +#define WUSB3801_REG_TEST06 0x0c +#define WUSB3801_REG_TEST07 0x0d +#define WUSB3801_REG_TEST08 0x0e +#define WUSB3801_REG_TEST09 0x0f +#define WUSB3801_REG_TEST0A 0x10 +#define WUSB3801_REG_TEST0B 0x11 +#define WUSB3801_REG_TEST0C 0x12 +#define WUSB3801_REG_TEST0D 0x13 +#define WUSB3801_REG_TEST0E 0x14 +#define WUSB3801_REG_TEST0F 0x15 +#define WUSB3801_REG_TEST10 0x16 +#define WUSB3801_REG_TEST11 0x17 +#define WUSB3801_REG_TEST12 0x18 + +#define WUSB3801_DEVICE_ID_VERSION_ID GENMASK(7, 3) +#define WUSB3801_DEVICE_ID_VENDOR_ID GENMASK(2, 0) + +#define WUSB3801_CTRL0_DIS_ACC_SUPPORT BIT(7) +#define WUSB3801_CTRL0_TRY GENMASK(6, 5) +#define WUSB3801_CTRL0_TRY_NONE (0x0 << 5) +#define WUSB3801_CTRL0_TRY_SNK (0x1 << 5) +#define WUSB3801_CTRL0_TRY_SRC (0x2 << 5) +#define WUSB3801_CTRL0_CURRENT GENMASK(4, 3) /* SRC */ +#define WUSB3801_CTRL0_CURRENT_DEFAULT (0x0 << 3) +#define WUSB3801_CTRL0_CURRENT_1_5A (0x1 << 3) +#define WUSB3801_CTRL0_CURRENT_3_0A (0x2 << 3) +#define WUSB3801_CTRL0_ROLE GENMASK(2, 1) +#define WUSB3801_CTRL0_ROLE_SNK (0x0 << 1) +#define WUSB3801_CTRL0_ROLE_SRC (0x1 << 1) +#define WUSB3801_CTRL0_ROLE_DRP (0x2 << 1) +#define WUSB3801_CTRL0_INT_MASK BIT(0) + +#define WUSB3801_INT_ATTACHED BIT(0) +#define WUSB3801_INT_DETACHED BIT(1) + +#define WUSB3801_STAT_VBUS_DETECTED BIT(7) +#define WUSB3801_STAT_CURRENT GENMASK(6, 5) /* SNK */ +#define WUSB3801_STAT_CURRENT_STANDBY (0x0 << 5) +#define WUSB3801_STAT_CURRENT_DEFAULT (0x1 << 5) +#define WUSB3801_STAT_CURRENT_1_5A (0x2 << 5) +#define WUSB3801_STAT_CURRENT_3_0A (0x3 << 5) +#define WUSB3801_STAT_PARTNER GENMASK(4, 2) +#define WUSB3801_STAT_PARTNER_STANDBY (0x0 << 2) +#define WUSB3801_STAT_PARTNER_SNK (0x1 << 2) +#define WUSB3801_STAT_PARTNER_SRC (0x2 << 2) +#define WUSB3801_STAT_PARTNER_AUDIO (0x3 << 2) +#define WUSB3801_STAT_PARTNER_DEBUG (0x4 << 2) +#define WUSB3801_STAT_ORIENTATION GENMASK(1, 0) +#define WUSB3801_STAT_ORIENTATION_NONE (0x0 << 0) +#define WUSB3801_STAT_ORIENTATION_CC1 (0x1 << 0) +#define WUSB3801_STAT_ORIENTATION_CC2 (0x2 << 0) +#define WUSB3801_STAT_ORIENTATION_BOTH (0x3 << 0) + +#define WUSB3801_CTRL1_SM_RESET BIT(0) + +#define WUSB3801_TEST01_VENDOR_SUB_ID (BIT(8) | BIT(6)) + +#define WUSB3801_TEST02_FORCE_ERR_RCY BIT(8) + +#define WUSB3801_TEST0A_WAIT_VBUS BIT(5) + +struct wusb3801 { + struct typec_capability cap; + struct device *dev; + struct typec_partner *partner; + struct typec_port *port; + struct regmap *regmap; + struct regulator *vbus_supply; + unsigned int partner_type; + enum typec_port_type port_type; + enum typec_pwr_opmode pwr_opmode; + bool vbus_on; +}; + +static enum typec_role wusb3801_get_default_role(struct wusb3801 *wusb3801) +{ + switch (wusb3801->port_type) { + case TYPEC_PORT_SRC: + return TYPEC_SOURCE; + case TYPEC_PORT_SNK: + return TYPEC_SINK; + case TYPEC_PORT_DRP: + default: + if (wusb3801->cap.prefer_role == TYPEC_SOURCE) + return TYPEC_SOURCE; + return TYPEC_SINK; + } +} + +static int wusb3801_map_port_type(enum typec_port_type type) +{ + switch (type) { + case TYPEC_PORT_SRC: + return WUSB3801_CTRL0_ROLE_SRC; + case TYPEC_PORT_SNK: + return WUSB3801_CTRL0_ROLE_SNK; + case TYPEC_PORT_DRP: + default: + return WUSB3801_CTRL0_ROLE_DRP; + } +} + +static int wusb3801_map_pwr_opmode(enum typec_pwr_opmode mode) +{ + switch (mode) { + case TYPEC_PWR_MODE_USB: + default: + return WUSB3801_CTRL0_CURRENT_DEFAULT; + case TYPEC_PWR_MODE_1_5A: + return WUSB3801_CTRL0_CURRENT_1_5A; + case TYPEC_PWR_MODE_3_0A: + return WUSB3801_CTRL0_CURRENT_3_0A; + } +} + +static unsigned int wusb3801_map_try_role(int role) +{ + switch (role) { + case TYPEC_NO_PREFERRED_ROLE: + default: + return WUSB3801_CTRL0_TRY_NONE; + case TYPEC_SINK: + return WUSB3801_CTRL0_TRY_SNK; + case TYPEC_SOURCE: + return WUSB3801_CTRL0_TRY_SRC; + } +} + +static enum typec_orientation wusb3801_unmap_orientation(unsigned int status) +{ + switch (status & WUSB3801_STAT_ORIENTATION) { + case WUSB3801_STAT_ORIENTATION_NONE: + case WUSB3801_STAT_ORIENTATION_BOTH: + return TYPEC_ORIENTATION_NONE; + case WUSB3801_STAT_ORIENTATION_CC1: + return TYPEC_ORIENTATION_NORMAL; + case WUSB3801_STAT_ORIENTATION_CC2: + return TYPEC_ORIENTATION_REVERSE; + } + + unreachable(); +} + +static enum typec_pwr_opmode wusb3801_unmap_pwr_opmode(unsigned int status) +{ + switch (status & WUSB3801_STAT_CURRENT) { + case WUSB3801_STAT_CURRENT_STANDBY: + case WUSB3801_STAT_CURRENT_DEFAULT: + return TYPEC_PWR_MODE_USB; + case WUSB3801_STAT_CURRENT_1_5A: + return TYPEC_PWR_MODE_1_5A; + case WUSB3801_STAT_CURRENT_3_0A: + return TYPEC_PWR_MODE_3_0A; + } + + unreachable(); +} + +static int wusb3801_try_role(struct typec_port *port, int role) +{ + struct wusb3801 *wusb3801 = typec_get_drvdata(port); + + return regmap_update_bits(wusb3801->regmap, WUSB3801_REG_CTRL0, + WUSB3801_CTRL0_TRY, + wusb3801_map_try_role(role)); +} + +static int wusb3801_port_type_set(struct typec_port *port, + enum typec_port_type type) +{ + struct wusb3801 *wusb3801 = typec_get_drvdata(port); + int ret; + + ret = regmap_update_bits(wusb3801->regmap, WUSB3801_REG_CTRL0, + WUSB3801_CTRL0_ROLE, + wusb3801_map_port_type(type)); + if (ret) + return ret; + + wusb3801->port_type = type; + + return 0; +} + +static const struct typec_operations wusb3801_typec_ops = { + .try_role = wusb3801_try_role, + .port_type_set = wusb3801_port_type_set, +}; + +static int wusb3801_hw_init(struct wusb3801 *wusb3801) +{ + return regmap_write(wusb3801->regmap, WUSB3801_REG_CTRL0, + wusb3801_map_try_role(wusb3801->cap.prefer_role) | + wusb3801_map_pwr_opmode(wusb3801->pwr_opmode) | + wusb3801_map_port_type(wusb3801->port_type)); +} + +static void wusb3801_hw_update(struct wusb3801 *wusb3801) +{ + struct typec_port *port = wusb3801->port; + struct device *dev = wusb3801->dev; + unsigned int partner_type, status; + int ret; + + ret = regmap_read(wusb3801->regmap, WUSB3801_REG_STAT, &status); + if (ret) { + dev_warn(dev, "Failed to read port status: %d\n", ret); + status = 0; + } + dev_dbg(dev, "status = 0x%02x\n", status); + + partner_type = status & WUSB3801_STAT_PARTNER; + + if (partner_type == WUSB3801_STAT_PARTNER_SNK) { + if (!wusb3801->vbus_on) { + ret = regulator_enable(wusb3801->vbus_supply); + if (ret) + dev_warn(dev, "Failed to enable VBUS: %d\n", ret); + wusb3801->vbus_on = true; + } + } else { + if (wusb3801->vbus_on) { + regulator_disable(wusb3801->vbus_supply); + wusb3801->vbus_on = false; + } + } + + if (partner_type != wusb3801->partner_type) { + struct typec_partner_desc desc = {}; + enum typec_data_role data_role; + enum typec_role pwr_role = wusb3801_get_default_role(wusb3801); + + switch (partner_type) { + case WUSB3801_STAT_PARTNER_STANDBY: + break; + case WUSB3801_STAT_PARTNER_SNK: + pwr_role = TYPEC_SOURCE; + break; + case WUSB3801_STAT_PARTNER_SRC: + pwr_role = TYPEC_SINK; + break; + case WUSB3801_STAT_PARTNER_AUDIO: + desc.accessory = TYPEC_ACCESSORY_AUDIO; + break; + case WUSB3801_STAT_PARTNER_DEBUG: + desc.accessory = TYPEC_ACCESSORY_DEBUG; + break; + } + + if (wusb3801->partner) { + typec_unregister_partner(wusb3801->partner); + wusb3801->partner = NULL; + } + + if (partner_type != WUSB3801_STAT_PARTNER_STANDBY) { + wusb3801->partner = typec_register_partner(port, &desc); + if (IS_ERR(wusb3801->partner)) + dev_err(dev, "Failed to register partner: %ld\n", + PTR_ERR(wusb3801->partner)); + } + + data_role = pwr_role == TYPEC_SOURCE ? TYPEC_HOST : TYPEC_DEVICE; + typec_set_data_role(port, data_role); + typec_set_pwr_role(port, pwr_role); + typec_set_vconn_role(port, pwr_role); + } + + typec_set_pwr_opmode(wusb3801->port, + partner_type == WUSB3801_STAT_PARTNER_SRC + ? wusb3801_unmap_pwr_opmode(status) + : wusb3801->pwr_opmode); + typec_set_orientation(wusb3801->port, + wusb3801_unmap_orientation(status)); + + wusb3801->partner_type = partner_type; +} + +static irqreturn_t wusb3801_irq(int irq, void *data) +{ + struct wusb3801 *wusb3801 = data; + unsigned int dummy; + + /* + * The interrupt register must be read in order to clear the IRQ, + * but all of the useful information is in the status register. + */ + regmap_read(wusb3801->regmap, WUSB3801_REG_INT, &dummy); + + wusb3801_hw_update(wusb3801); + + return IRQ_HANDLED; +} + +static const struct regmap_config config = { + .reg_bits = 8, + .val_bits = 8, + .max_register = WUSB3801_REG_TEST12, +}; + +static int wusb3801_probe(struct i2c_client *client) +{ + struct device *dev = &client->dev; + struct fwnode_handle *connector; + unsigned int device_id, test01; + struct wusb3801 *wusb3801; + const char *cap_str; + int ret; + + wusb3801 = devm_kzalloc(dev, sizeof(*wusb3801), GFP_KERNEL); + if (!wusb3801) + return -ENOMEM; + + i2c_set_clientdata(client, wusb3801); + + wusb3801->dev = dev; + + wusb3801->regmap = devm_regmap_init_i2c(client, &config); + if (IS_ERR(wusb3801->regmap)) + return PTR_ERR(wusb3801->regmap); + + regmap_read(wusb3801->regmap, WUSB3801_REG_DEVICE_ID, &device_id); + regmap_read(wusb3801->regmap, WUSB3801_REG_TEST01, &test01); + dev_info(dev, "Vendor ID: %ld, Version ID: %ld, Vendor SubID: 0x%02lx\n", + device_id & WUSB3801_DEVICE_ID_VENDOR_ID, + (device_id & WUSB3801_DEVICE_ID_VERSION_ID) >> 3, + test01 & WUSB3801_TEST01_VENDOR_SUB_ID); + + wusb3801->vbus_supply = devm_regulator_get(dev, "vbus"); + if (IS_ERR(wusb3801->vbus_supply)) + return PTR_ERR(wusb3801->vbus_supply); + + connector = device_get_named_child_node(dev, "connector"); + if (!connector) + return -ENODEV; + + ret = typec_get_fw_cap(&wusb3801->cap, connector); + if (ret) + goto err_put_connector; + wusb3801->port_type = wusb3801->cap.type; + + ret = fwnode_property_read_string(connector, "typec-power-opmode", &cap_str); + if (ret) + goto err_put_connector; + + ret = typec_find_pwr_opmode(cap_str); + if (ret < 0 || ret == TYPEC_PWR_MODE_PD) + goto err_put_connector; + wusb3801->pwr_opmode = ret; + + /* Initialize the hardware with the devicetree settings. */ + ret = wusb3801_hw_init(wusb3801); + if (ret) + return ret; + + wusb3801->cap.revision = USB_TYPEC_REV_1_2; + wusb3801->cap.accessory[0] = TYPEC_ACCESSORY_AUDIO; + wusb3801->cap.accessory[1] = TYPEC_ACCESSORY_DEBUG; + wusb3801->cap.orientation_aware = true; + wusb3801->cap.driver_data = wusb3801; + wusb3801->cap.ops = &wusb3801_typec_ops; + + wusb3801->port = typec_register_port(dev, &wusb3801->cap); + if (IS_ERR(wusb3801->port)) { + ret = PTR_ERR(wusb3801->port); + goto err_put_connector; + } + + /* Initialize the port attributes from the hardware state. */ + wusb3801_hw_update(wusb3801); + + ret = devm_request_threaded_irq(dev, client->irq, NULL, wusb3801_irq, + IRQF_ONESHOT, dev_name(dev), wusb3801); + if (ret) + goto err_unregister_port; + + fwnode_handle_put(connector); + + return 0; + +err_unregister_port: + typec_unregister_port(wusb3801->port); +err_put_connector: + fwnode_handle_put(connector); + + return ret; +} + +static int wusb3801_remove(struct i2c_client *client) +{ + struct wusb3801 *wusb3801 = i2c_get_clientdata(client); + + if (wusb3801->partner) + typec_unregister_partner(wusb3801->partner); + typec_unregister_port(wusb3801->port); + + if (wusb3801->vbus_on) + regulator_disable(wusb3801->vbus_supply); + + return 0; +} + +static const struct of_device_id wusb3801_of_match[] = { + { .compatible = "willsemi,wusb3801" }, + {} +}; +MODULE_DEVICE_TABLE(of, wusb3801_of_match); + +static struct i2c_driver wusb3801_driver = { + .probe_new = wusb3801_probe, + .remove = wusb3801_remove, + .driver = { + .name = "wusb3801", + .of_match_table = wusb3801_of_match, + }, +}; + +module_i2c_driver(wusb3801_driver); + +MODULE_AUTHOR("Samuel Holland "); +MODULE_DESCRIPTION("Willsemi WUSB3801 Type-C port controller driver"); +MODULE_LICENSE("GPL");