From patchwork Fri Mar 1 01:25:13 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jun Li X-Patchwork-Id: 10834327 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 776CD1805 for ; Fri, 1 Mar 2019 01:25:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6362B2F73D for ; Fri, 1 Mar 2019 01:25:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 57E882F743; Fri, 1 Mar 2019 01:25:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CA2E22F73D for ; Fri, 1 Mar 2019 01:25:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733020AbfCABZR (ORCPT ); Thu, 28 Feb 2019 20:25:17 -0500 Received: from mail-eopbgr60073.outbound.protection.outlook.com ([40.107.6.73]:32279 "EHLO EUR04-DB3-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1732400AbfCABZR (ORCPT ); Thu, 28 Feb 2019 20:25:17 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=mqZuFuoyZLjJzvUsQUMkZKwfCIzWHu9j6dr+EgrsrmM=; b=D8yQWWEjRg1yrqfUZE43y9y8uCf7KqUst7Eh0jir+xJgW1deWiBrunf5xaMa5A0kTx48dj/823Ge4Bu5Yn3/dcMXg55btnJcGVmTYLwJ+RJYZ0MsGbLA4QXSVVxOJOhw4qNuTYZ7d4mU45u7/Mxe/0/b5nhTzRpaNYfKpxnvRSk= Received: from VI1PR04MB4558.eurprd04.prod.outlook.com (20.177.55.216) by VI1PR04MB2080.eurprd04.prod.outlook.com (10.166.43.20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1665.16; Fri, 1 Mar 2019 01:25:13 +0000 Received: from VI1PR04MB4558.eurprd04.prod.outlook.com ([fe80::952d:34ed:3402:da3]) by VI1PR04MB4558.eurprd04.prod.outlook.com ([fe80::952d:34ed:3402:da3%5]) with mapi id 15.20.1665.015; Fri, 1 Mar 2019 01:25:13 +0000 From: Jun Li To: "robh+dt@kernel.org" , "heikki.krogerus@linux.intel.com" CC: "gregkh@linuxfoundation.org" , "hdegoede@redhat.com" , "andy.shevchenko@gmail.com" , "linux-usb@vger.kernel.org" , "devicetree@vger.kernel.org" , dl-linux-imx Subject: [PATCH v2 2/2] usb: typec: add typec switch via GPIO control Thread-Topic: [PATCH v2 2/2] usb: typec: add typec switch via GPIO control Thread-Index: AQHUz82eFtupBI6k40mwtjv5xay5JA== Date: Fri, 1 Mar 2019 01:25:13 +0000 Message-ID: <1551402256-7815-2-git-send-email-jun.li@nxp.com> References: <1551402256-7815-1-git-send-email-jun.li@nxp.com> In-Reply-To: <1551402256-7815-1-git-send-email-jun.li@nxp.com> Accept-Language: zh-CN, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-mailer: git-send-email 2.7.4 x-clientproxiedby: HK0PR04CA0015.apcprd04.prod.outlook.com (2603:1096:203:36::27) To VI1PR04MB4558.eurprd04.prod.outlook.com (2603:10a6:803:6f::24) authentication-results: spf=none (sender IP is ) smtp.mailfrom=jun.li@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [119.31.174.71] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 6d4e61b0-6ba4-4503-073b-08d69de4c0c1 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600127)(711020)(4605104)(4618075)(2017052603328)(7153060)(7193020);SRVR:VI1PR04MB2080; x-ms-traffictypediagnostic: VI1PR04MB2080: x-microsoft-exchange-diagnostics: =?iso-8859-1?q?1=3BVI1PR04MB2080=3B23=3Aw0?= =?iso-8859-1?q?B8WIr7XVYATV/W9bbxOMBF/cvAYVu+8+IKet1jj40N6G84kJA1DLNJLKI21b?= =?iso-8859-1?q?tC4buqz9YbBE0et0TXfGbKvnToa7zERQ2iHcqaWRDGeO6sU64qJvJBokvpdv?= =?iso-8859-1?q?Drdv/FC0At5kQKGpkSnMLkKJKJXETQIjW3gG6Wpx0ImOLiCmwrfu30DI5n87?= =?iso-8859-1?q?BpNKONnJCSHxT+t5Ur/f2qS4bAojG7h6zaSUBfcfx7IW1zi+0JQMewF6luDu?= =?iso-8859-1?q?oeIBSMn3MOOzqG/NVyM6BQrZP5cQyj6ybKNU/OjV2WJyFMUqZQPPAKMcONuP?= =?iso-8859-1?q?74fPPYoAmvOPWHEtP8FGOaOJenELnYNYAphirAdoaKsUyUssNjz4CScb3vDX?= =?iso-8859-1?q?ZI1qp3VEyWnI4BG2MOD0V45Z0hQ0IT1t7SrgoyqcmJNGRCXjbN2HUEXBuuhb?= =?iso-8859-1?q?bULqW7Tl+e+5ZI2ln5sbTYMy5aPPVt0HAZwlQcT9/qekh5Hcu58/MxrQDWI9?= =?iso-8859-1?q?xgBRIpFwqlO1uNDAIRsnITzFBUGkZqGOetlKV70uavpprWyt/T/26QsE5Zvd?= =?iso-8859-1?q?WjsNddBsYTHBZQRytZ2hXIDcAjny7iceLDLV4hRi4jGFoQR19inZPR+Uq7I6?= =?iso-8859-1?q?ld6/GGt5fdgI+nRJ+9env0m9gqn2v+aMmv79f/KLATVwBOu3WlpvmhsBGZqO?= =?iso-8859-1?q?K+mFV0O5Pz/gcpak1X7pVgZczwJEDQf0spLDJfjvdTWjiFsAxKzy3M0krZmN?= =?iso-8859-1?q?MdhnfYfdGruw68hp8Gonn61bpIzkbs32zw0ZlfofVOBW017UM8TyJX7/XArl?= =?iso-8859-1?q?r47mHImMcIb8or1O3oSDDMb+sxT5IZxVbmZWfpCjKSIg88UxcT4jJlPb7Ze5?= =?iso-8859-1?q?iSiUlFtATp8pNMGBoPhOqzAkNa6Gps52+HDhoaFcwwGsd5pJ+0j2n6+re7om?= =?iso-8859-1?q?/Xz4HDFtWZgrRrUAHOKQBYxnz6ONTvISmxBat3L7QX2iaxLE6Ti+eqSbE2an?= =?iso-8859-1?q?UlHn+69mU4miIjAqzeKPC+pJQMTPBO0BLF34A03e3il1nBF/xMp4j1vupOwZ?= =?iso-8859-1?q?tJQuqQHZlZLZOaJ1GfUah7cNhi6rRGhXYrVB/OAVOlCx6Mh1+JXMOg0vcftz?= =?iso-8859-1?q?42A4ASCEilZfX9QHEfZTt8hFwuwqE1lds9DmcQZMAuik+BfidCx5MdNibF/+?= =?iso-8859-1?q?rUXEBSBQv8Ui6r8NgV5XS8F3PjI5MI28HKQC2/AFqeI4jNE/vU3Fc1/n0uv0?= =?iso-8859-1?q?qOcBmSW7HNdaZj/0+ctF+/rGB2kbKHiUsFTs7R26eG/+1DqTO7vvr41DU=3D?= x-microsoft-antispam-prvs: x-forefront-prvs: 09634B1196 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(39840400004)(366004)(376002)(396003)(346002)(136003)(199004)(189003)(110136005)(54906003)(316002)(68736007)(4326008)(2501003)(2906002)(25786009)(36756003)(105586002)(76176011)(6506007)(386003)(106356001)(102836004)(26005)(52116002)(50226002)(97736004)(186003)(99286004)(86362001)(478600001)(44832011)(3846002)(11346002)(14444005)(66066001)(8676002)(305945005)(446003)(476003)(2616005)(486006)(6486002)(256004)(14454004)(6512007)(81166006)(71200400001)(71190400001)(7736002)(53936002)(81156014)(8936002)(6436002)(5660300002)(6116002);DIR:OUT;SFP:1101;SCL:1;SRVR:VI1PR04MB2080;H:VI1PR04MB4558.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: eEmWaTycOtyjoC6IIn9WgNQpLkrCAKD1kJgk1dYBo4HLFDv+Tc8nb74shlpWdQdIl9wf9Lex6+4vozYgH0/gnBeQ46NAGPGFapqd6LPp2+/+FAL5XxpL9b8S8+hZk66Pv6T1HJOuOXG4HAg02myeFeEfvRWooegaM726lhZ5bU97GZSKrJIoO9qTmfHHzd7BQB5ene9L+v8k3wzpekpygl0dgAtt6adYbqboyhJloBr35IjtuNm6tbIUZZ8gEV7B5oqV0IiZgjBCIla4/pc9LMdv2gnZO/932IBpvUg6YqTrUNu8q3i6bHfPobIMnse45DKecrUTH/JQSVCrPY4ofm2dNPL5arJ4u0/W1IEcAbfwkhRMMQRy7yR/xTgu5I4oGj7JCkdiyvIZ73LAS2Jl1zmZp4pB96qBTn+e43ey5ok= MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 6d4e61b0-6ba4-4503-073b-08d69de4c0c1 X-MS-Exchange-CrossTenant-originalarrivaltime: 01 Mar 2019 01:25:13.4746 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR04MB2080 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds a simple typec switch driver which only needs a GPIO to switch the super speed active channel according to typec orientation. Signed-off-by: Li Jun Reviewed-by: Andy Shevchenko --- Changes for v2: - Use the correct head files for gpio api and of_device_id: #include #include - Add driver dependency on GPIOLIB drivers/usb/typec/mux/Kconfig | 7 +++ drivers/usb/typec/mux/Makefile | 1 + drivers/usb/typec/mux/gpio-switch.c | 105 ++++++++++++++++++++++++++++++++++++ 3 files changed, 113 insertions(+) diff --git a/drivers/usb/typec/mux/Kconfig b/drivers/usb/typec/mux/Kconfig index 01ed0d5..27120e6 100644 --- a/drivers/usb/typec/mux/Kconfig +++ b/drivers/usb/typec/mux/Kconfig @@ -9,4 +9,11 @@ config TYPEC_MUX_PI3USB30532 Say Y or M if your system has a Pericom PI3USB30532 Type-C cross switch / mux chip found on some devices with a Type-C port. +config TYPEC_SWITCH_GPIO + tristate "Simple Super Speed Active Switch via GPIO" + depends on GPIOLIB + help + Say Y or M if your system has a typec super speed channel + switch via a simple GPIO control. + endmenu diff --git a/drivers/usb/typec/mux/Makefile b/drivers/usb/typec/mux/Makefile index 1332e46..e29377c 100644 --- a/drivers/usb/typec/mux/Makefile +++ b/drivers/usb/typec/mux/Makefile @@ -1,3 +1,4 @@ # SPDX-License-Identifier: GPL-2.0 obj-$(CONFIG_TYPEC_MUX_PI3USB30532) += pi3usb30532.o +obj-$(CONFIG_TYPEC_SWITCH_GPIO) += gpio-switch.o diff --git a/drivers/usb/typec/mux/gpio-switch.c b/drivers/usb/typec/mux/gpio-switch.c new file mode 100644 index 0000000..b01844c --- /dev/null +++ b/drivers/usb/typec/mux/gpio-switch.c @@ -0,0 +1,105 @@ +// SPDX-License-Identifier: GPL-2.0 +/** + * gpio-switch.c - typec switch via a simple GPIO control. + * + * Copyright 2019 NXP + * Author: Jun Li + * + */ + +#include +#include +#include +#include +#include +#include +#include + +struct gpio_typec_switch { + struct typec_switch sw; + struct mutex lock; + struct gpio_desc *ss_sel; +}; + +static int switch_gpio_set(struct typec_switch *sw, + enum typec_orientation orientation) +{ + struct gpio_typec_switch *gpio_sw = container_of(sw, + struct gpio_typec_switch, sw); + + mutex_lock(&gpio_sw->lock); + + switch (orientation) { + case TYPEC_ORIENTATION_NORMAL: + gpiod_set_value_cansleep(gpio_sw->ss_sel, 1); + break; + case TYPEC_ORIENTATION_REVERSE: + gpiod_set_value_cansleep(gpio_sw->ss_sel, 0); + break; + case TYPEC_ORIENTATION_NONE: + break; + } + + mutex_unlock(&gpio_sw->lock); + + return 0; +} + +static int typec_switch_gpio_probe(struct platform_device *pdev) +{ + struct gpio_typec_switch *gpio_sw; + struct device *dev = &pdev->dev; + int ret; + + gpio_sw = devm_kzalloc(dev, sizeof(*gpio_sw), GFP_KERNEL); + if (!gpio_sw) + return -ENOMEM; + + platform_set_drvdata(pdev, gpio_sw); + + gpio_sw->sw.dev = dev; + gpio_sw->sw.set = switch_gpio_set; + mutex_init(&gpio_sw->lock); + + /* Get the super speed active channel selection GPIO */ + gpio_sw->ss_sel = devm_gpiod_get(dev, NULL, GPIOD_OUT_LOW); + if (IS_ERR(gpio_sw->ss_sel)) + return PTR_ERR(gpio_sw->ss_sel); + + ret = typec_switch_register(&gpio_sw->sw); + if (ret) { + dev_err(dev, "Error registering typec switch: %d\n", ret); + return ret; + } + + return 0; +} + +static int typec_switch_gpio_remove(struct platform_device *pdev) +{ + struct gpio_typec_switch *gpio_sw = platform_get_drvdata(pdev); + + typec_switch_unregister(&gpio_sw->sw); + + return 0; +} + +static const struct of_device_id of_typec_switch_gpio_match[] = { + { .compatible = "nxp,ptn36043" }, + { /* Sentinel */ } +}; +MODULE_DEVICE_TABLE(of, of_typec_switch_gpio_match); + +static struct platform_driver typec_switch_gpio_driver = { + .probe = typec_switch_gpio_probe, + .remove = typec_switch_gpio_remove, + .driver = { + .name = "typec-switch-gpio", + .of_match_table = of_typec_switch_gpio_match, + }, +}; + +module_platform_driver(typec_switch_gpio_driver); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("TypeC Super Speed Switch GPIO driver"); +MODULE_AUTHOR("Jun Li ");