From patchwork Wed May 12 14:44:24 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 436425 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 373C3C433B4 for ; Wed, 12 May 2021 16:45:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1E123611BF for ; Wed, 12 May 2021 16:45:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238156AbhELQol (ORCPT ); Wed, 12 May 2021 12:44:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:53560 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238726AbhELQcv (ORCPT ); Wed, 12 May 2021 12:32:51 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3340C61C41; Wed, 12 May 2021 15:58:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620835127; bh=cM4N5uP7brzU1NXDwWlNLOAKsrLCvAENPmzXLCdGhZk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uNgKMkFxSanMVtqs2gBPpVBBX9LyJtbxE/O+uwFG6iYI6Jwz9ZDqa2bdKcCTuKFTW FCa4CBBJU3ZaT2KLNPBXSStERZGo7KwwHg6piTQ6Zji5W1JeKCm1CJxPjzhdKstohT dzMq7v8uXGq+eSafCgZ9+hI7h7ne63ltlKS7EfDw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andy Shevchenko , Sasha Levin Subject: [PATCH 5.12 218/677] usb: gadget: pch_udc: Provide a GPIO line used on Intel Minnowboard (v1) Date: Wed, 12 May 2021 16:44:24 +0200 Message-Id: <20210512144844.474119604@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210512144837.204217980@linuxfoundation.org> References: <20210512144837.204217980@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Andy Shevchenko [ Upstream commit 049d3db625a652e23488db88b6104de4d5b62f16 ] Intel Minnowboard (v1) uses SCH GPIO line SUS7 (i.e. 12) for VBUS sense. Provide a DMI based quirk to have it's being used. Fixes: e20849a8c883 ("usb: gadget: pch_udc: Convert to use GPIO descriptors") Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20210323153626.54908-7-andriy.shevchenko@linux.intel.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/gadget/udc/pch_udc.c | 71 +++++++++++++++++++++++++------- 1 file changed, 57 insertions(+), 14 deletions(-) diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c index a39122f01cdb..fd3656d0f760 100644 --- a/drivers/usb/gadget/udc/pch_udc.c +++ b/drivers/usb/gadget/udc/pch_udc.c @@ -7,12 +7,14 @@ #include #include #include +#include #include +#include +#include #include #include #include #include -#include #include #define PCH_VBUS_PERIOD 3000 /* VBUS polling period (msec) */ @@ -1359,6 +1361,43 @@ static irqreturn_t pch_vbus_gpio_irq(int irq, void *data) return IRQ_HANDLED; } +static struct gpiod_lookup_table minnowboard_udc_gpios = { + .dev_id = "0000:02:02.4", + .table = { + GPIO_LOOKUP("sch_gpio.33158", 12, NULL, GPIO_ACTIVE_HIGH), + {} + }, +}; + +static const struct dmi_system_id pch_udc_gpio_dmi_table[] = { + { + .ident = "MinnowBoard", + .matches = { + DMI_MATCH(DMI_BOARD_NAME, "MinnowBoard"), + }, + .driver_data = &minnowboard_udc_gpios, + }, + { } +}; + +static void pch_vbus_gpio_remove_table(void *table) +{ + gpiod_remove_lookup_table(table); +} + +static int pch_vbus_gpio_add_table(struct pch_udc_dev *dev) +{ + struct device *d = &dev->pdev->dev; + const struct dmi_system_id *dmi; + + dmi = dmi_first_match(pch_udc_gpio_dmi_table); + if (!dmi) + return 0; + + gpiod_add_lookup_table(dmi->driver_data); + return devm_add_action_or_reset(d, pch_vbus_gpio_remove_table, dmi->driver_data); +} + /** * pch_vbus_gpio_init() - This API initializes GPIO port detecting VBUS. * @dev: Reference to the driver structure @@ -1377,8 +1416,12 @@ static int pch_vbus_gpio_init(struct pch_udc_dev *dev) dev->vbus_gpio.port = NULL; dev->vbus_gpio.intr = 0; + err = pch_vbus_gpio_add_table(dev); + if (err) + return err; + /* Retrieve the GPIO line from the USB gadget device */ - gpiod = devm_gpiod_get(d, NULL, GPIOD_IN); + gpiod = devm_gpiod_get_optional(d, NULL, GPIOD_IN); if (IS_ERR(gpiod)) return PTR_ERR(gpiod); gpiod_set_consumer_name(gpiod, "pch_vbus"); @@ -2888,14 +2931,20 @@ static void pch_udc_pcd_reinit(struct pch_udc_dev *dev) * @dev: Reference to the driver structure * * Return codes: - * 0: Success + * 0: Success + * -%ERRNO: All kind of errors when retrieving VBUS GPIO */ static int pch_udc_pcd_init(struct pch_udc_dev *dev) { + int ret; + pch_udc_init(dev); pch_udc_pcd_reinit(dev); - pch_vbus_gpio_init(dev); - return 0; + + ret = pch_vbus_gpio_init(dev); + if (ret) + pch_udc_exit(dev); + return ret; } /** @@ -3097,16 +3146,10 @@ static int pch_udc_probe(struct pci_dev *pdev, dev->base_addr = pcim_iomap_table(pdev)[bar]; - /* - * FIXME: add a GPIO descriptor table to pdev.dev using - * gpiod_add_descriptor_table() from based on - * the PCI subsystem ID. The system-dependent GPIO is necessary for - * VBUS operation. - */ - /* initialize the hardware */ - if (pch_udc_pcd_init(dev)) - return -ENODEV; + retval = pch_udc_pcd_init(dev); + if (retval) + return retval; pci_enable_msi(pdev);