From patchwork Wed Dec 11 14:46:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marek Szyprowski X-Patchwork-Id: 11285253 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 60E80109A for ; Wed, 11 Dec 2019 14:48:13 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 3BFD42173E for ; Wed, 11 Dec 2019 14:48:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="bzJj8TOp"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="THjkas/M" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3BFD42173E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=samsung.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=VaXyCRxrii+64+taccjCf5zZVG4F7kN76iT1WL/3L3w=; b=bzJj8TOp/UUCSH8hAvbEfRh1Tn ly7ZbwI4BGujxvCRjMiASubPPhN16qurHen2/lnBa7RSmIXNIWWhG764B72WFvGnYuDj5ugIqKYGT eEY9YpOd6sKnPo0BKnzZSNZvl5T/laB+zQ7OrmbH3Zj05/CB7O3IpFwY1/z6emqswr07wsyU2a/kC nUU4gcFcNKNFyCVvN92YZGHTjfLqKHJ/fN+s+e4DtQ4w/EhT+1n+eq4emujkBl2bn/F05T2ZfLong sJ+7AhsEO7zhzAHP16ZzcKGoD2qPT+gvD59VnB9S606PLTpwyxUR3VtcIz7fOWikXnIIgoCyK/P/3 5AzARdgA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1if3He-0004SV-Gj; Wed, 11 Dec 2019 14:48:10 +0000 Received: from mailout2.w1.samsung.com ([210.118.77.12]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1if3GR-0003Ch-Ie for linux-arm-kernel@lists.infradead.org; Wed, 11 Dec 2019 14:46:59 +0000 Received: from eucas1p2.samsung.com (unknown [182.198.249.207]) by mailout2.w1.samsung.com (KnoxPortal) with ESMTP id 20191211144651euoutp0210e19a76a43e195680c62e9023cd64bc~fWGsokQGP1117911179euoutp02C for ; Wed, 11 Dec 2019 14:46:51 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout2.w1.samsung.com 20191211144651euoutp0210e19a76a43e195680c62e9023cd64bc~fWGsokQGP1117911179euoutp02C DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1576075611; bh=jPVQGv2B63dkrb4xPXViL+0AtlLT78bLnq0v7ybfs38=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=THjkas/MzYhyi5bxqtCiFaTMibrLiG6/ck6oyH1BG9YDd+R0tv75XJyMeZIH2Z3Uc Cqb6KktBqHRIYoiJmozBgSLRRo8su4NtNjz4qtYJyLCPMFdXUie/JzePoGOJ64PTnI WCMy3cUoT1Q0+9I6X+VX/ESrMMr24h7OiDpZmNcQ= Received: from eusmges1new.samsung.com (unknown [203.254.199.242]) by eucas1p2.samsung.com (KnoxPortal) with ESMTP id 20191211144651eucas1p2a3b9c45b1a4754c000c8860c82504333~fWGr_xD2d0794007940eucas1p2Z; Wed, 11 Dec 2019 14:46:51 +0000 (GMT) Received: from eucas1p1.samsung.com ( [182.198.249.206]) by eusmges1new.samsung.com (EUCPMTA) with SMTP id E4.2F.61286.B5101FD5; Wed, 11 Dec 2019 14:46:51 +0000 (GMT) Received: from eusmtrp2.samsung.com (unknown [182.198.249.139]) by eucas1p2.samsung.com (KnoxPortal) with ESMTPA id 20191211144650eucas1p221857c5e96ee4b5730fad80e105933ac~fWGroaE5d1014710147eucas1p2R; Wed, 11 Dec 2019 14:46:50 +0000 (GMT) Received: from eusmgms2.samsung.com (unknown [182.198.249.180]) by eusmtrp2.samsung.com (KnoxPortal) with ESMTP id 20191211144650eusmtrp26bb810620493b236aed5f8ff33c1102f~fWGrnsfxn0169801698eusmtrp29; Wed, 11 Dec 2019 14:46:50 +0000 (GMT) X-AuditID: cbfec7f2-f0bff7000001ef66-93-5df1015b3e91 Received: from eusmtip1.samsung.com ( [203.254.199.221]) by eusmgms2.samsung.com (EUCPMTA) with SMTP id 42.AA.07950.A5101FD5; Wed, 11 Dec 2019 14:46:50 +0000 (GMT) Received: from AMDC2765.digital.local (unknown [106.120.51.73]) by eusmtip1.samsung.com (KnoxPortal) with ESMTPA id 20191211144649eusmtip1181d94ddc9fa416ac400580ecdc322e8~fWGq4HQtg0888708887eusmtip19; Wed, 11 Dec 2019 14:46:49 +0000 (GMT) From: Marek Szyprowski To: linux-usb@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH v2 4/4] usb: usb3503: Convert to use GPIO descriptors Date: Wed, 11 Dec 2019 15:46:38 +0100 Message-Id: <20191211144638.24676-5-m.szyprowski@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20191211144638.24676-1-m.szyprowski@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA0VSaUhUURjlzntv3nNw5DkjeF1KGigryAWjLqWSYfGEjET6k0015XPBlRnX /iTuDikmSpNmiYqW+5bOaGkuOamD44JmkFppoImWS4Yams9n9u+c757znXMvl8Ik7whrKjg8 ilWGK0JlQhHe3LsxeMoPLMud+uoxNDizhaN6TS2BBjqWcJTWXoijpJJaITIa60iU+6dcgBpm xgk02vpUiEaThgHSGNsFqLgsBUPVPZMkSkx2QakZZQRqrEkj0UaXUXDBnCn5PYUxdV8rCUaX P0kyDRUZQubT+Gsh01FYRTKNpQ+Y5L4OnMlqqgDMasPha6IbIld/NjQ4hlU6ut8RBTXNNJOR z53i1vtniQSgt1cDEwrSp2FZTjGpBiJKQr8AcGzTIOTJGoCFKZ2AU0noVQBnJwLVgNpzpHQf 5zXlAC63aIgDw8v1MZwzCGlnqF5U722yoKsA3MrU4BzB6E0MflxI2VsrpS/B9JphgsM4fRQW pGcJOCym3WCHYRvwBe1gZd1bjIs2od1hbmc8twfSUySc07ZjvMYTjpa0EzyWwu/6JpLHtnBH 91zAG5IA/DJYTfLkIYCjiZr9hPOwW8+1oHbrnYC1rY782AMWJJUD/s5mcGLRnBtjuzCn+THG j8UwPVXCq4/BfH3NQWzn0Mh+NQbOf9DsP+kjALOW10E2sMv/H1YEQAWwZKNVYYGsyjmcjXVQ KcJU0eGBDvciwhrA7uca2NavaMGvkbtdgKaAzFRc1PJDLiEUMar4sC4AKUxmIdanLsklYn9F /H1WGXFbGR3KqrqADYXLLMUuxfNyCR2oiGJDWDaSVf47FVAm1gmAiF9jv32WHrnlsXnWNQAa SqdEcQYm08tautC2vWgXaz70ZvqJp2vUZWfCtsAqxnD1kK7HNK/FLLvc1jck8fq01n/55pXq wYDGZ4IKey9v77lZn9Bz/WfmrH76OW29d7R55aOd1Y2PFOM+F92KVhql9XnyhZh5Ue96W6Fv snEnW4arghTOJzGlSvEXORxtJVgDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrKIsWRmVeSWpSXmKPExsVy+t/xu7pRjB9jDTqeaFqce/ybxWLjjPWs Fqf3v2OxaN83l8WiefF6Novz5zewW0z5s5zJYtPja6wWl3fNYbO43HyR0WLG+X1MFouWtTJb rD1yl92iqcXYoq1zGavF5nXt7BY/D51nchD0WPz9HrPHhkerWT12zrrL7rFpVSebx51re9g8 9s9dw+6xeUm9R8vJ/SwefVtWMXp83iQXwBWlZ1OUX1qSqpCRX1xiqxRtaGGkZ2hpoWdkYqln aGwea2VkqqRvZ5OSmpNZllqkb5egl7Hl8Tb2gvkGFd9OPWFtYDyu3sXIwSEhYCLReliji5GL Q0hgKaPE0yfHmLsYOYHiMhInpzWwQtjCEn+udbFBFH1ilFh9ajNYgk3AUKLrLURCRGADo8SZ 909YQBLMAk0sEicPqYDYwgKuEh3rLoI1sAioSszu6GMCsXkFbCX2n/nHCLFBXmL1hgPMIBdx CthJTDlYCRIWAiq5N+kQ2wRGvgWMDKsYRVJLi3PTc4uN9IoTc4tL89L1kvNzNzECo2jbsZ9b djB2vQs+xCjAwajEw7tg+/tYIdbEsuLK3EOMEhzMSiK8x9vexQrxpiRWVqUW5ccXleakFh9i NAW6aSKzlGhyPjDC80riDU0NzS0sDc2NzY3NLJTEeTsEDsYICaQnlqRmp6YWpBbB9DFxcEo1 MKpknr333+BegsOc+Rc3p//yKv4fKy7yJ4zvc3qNimDDs6hMP2XXmflvzFO3b1j3al7Jxcdi PZ+nc9sILFq0ZsUBuWU50oUfL3/kfKkw94LmGu/JOy9NFM7Z9OdFrcv869ffP1PdLPfmjahc 2pH7BuK8xQYCxis2xiZ92/r3TvOOz8ftumqVZj5TYinOSDTUYi4qTgQArFTau7gCAAA= X-CMS-MailID: 20191211144650eucas1p221857c5e96ee4b5730fad80e105933ac X-Msg-Generator: CA X-RootMTR: 20191211144650eucas1p221857c5e96ee4b5730fad80e105933ac X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20191211144650eucas1p221857c5e96ee4b5730fad80e105933ac References: <20191211144638.24676-1-m.szyprowski@samsung.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191211_064655_759977_269B0599 X-CRM114-Status: GOOD ( 18.98 ) X-Spam-Score: -5.2 (-----) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-5.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at https://www.dnswl.org/, high trust [210.118.77.12 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.0 DKIMWL_WL_HIGH DKIMwl.org - Whitelisted High sender X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stefan Agner , Bartlomiej Zolnierkiewicz , Greg Kroah-Hartman , Linus Walleij , Maxime Ripard , Bjorn Andersson , Chunfeng Yun , Chen-Yu Tsai , Andy Gross , Krzysztof Kozlowski , Matthias Brugger , Marek Szyprowski MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Linus Walleij This converts the USB3503 to pick GPIO descriptors from the device tree instead of iteratively picking out GPIO number references and then referencing these from the global GPIO numberspace. The USB3503 is only used from device tree among the in-tree platforms. If board files would still desire to use it they can provide machine descriptor tables. Make sure to preserve semantics such as the reset delay introduced by Stefan. Cc: Chunfeng Yun Cc: Marek Szyprowski Cc: Stefan Agner Cc: Krzysztof Kozlowski Signed-off-by: Linus Walleij [mszyprow: invert the logic behind reset GPIO line] Signed-off-by: Marek Szyprowski --- drivers/usb/misc/usb3503.c | 94 ++++++++++----------------- include/linux/platform_data/usb3503.h | 3 - 2 files changed, 35 insertions(+), 62 deletions(-) diff --git a/drivers/usb/misc/usb3503.c b/drivers/usb/misc/usb3503.c index 72f39a9751b5..116bd789e568 100644 --- a/drivers/usb/misc/usb3503.c +++ b/drivers/usb/misc/usb3503.c @@ -7,11 +7,10 @@ #include #include -#include +#include #include #include #include -#include #include #include #include @@ -47,19 +46,19 @@ struct usb3503 { struct device *dev; struct clk *clk; u8 port_off_mask; - int gpio_intn; - int gpio_reset; - int gpio_connect; + struct gpio_desc *intn; + struct gpio_desc *reset; + struct gpio_desc *connect; bool secondary_ref_clk; }; static int usb3503_reset(struct usb3503 *hub, int state) { - if (!state && gpio_is_valid(hub->gpio_connect)) - gpio_set_value_cansleep(hub->gpio_connect, 0); + if (!state && hub->connect) + gpiod_set_value_cansleep(hub->connect, 0); - if (gpio_is_valid(hub->gpio_reset)) - gpio_set_value_cansleep(hub->gpio_reset, state); + if (hub->reset) + gpiod_set_value_cansleep(hub->reset, !state); /* Wait T_HUBINIT == 4ms for hub logic to stabilize */ if (state) @@ -115,8 +114,8 @@ static int usb3503_connect(struct usb3503 *hub) } } - if (gpio_is_valid(hub->gpio_connect)) - gpio_set_value_cansleep(hub->gpio_connect, 1); + if (hub->connect) + gpiod_set_value_cansleep(hub->connect, 1); hub->mode = USB3503_MODE_HUB; dev_info(dev, "switched to HUB mode\n"); @@ -163,13 +162,11 @@ static int usb3503_probe(struct usb3503 *hub) int err; u32 mode = USB3503_MODE_HUB; const u32 *property; + enum gpiod_flags flags; int len; if (pdata) { hub->port_off_mask = pdata->port_off_mask; - hub->gpio_intn = pdata->gpio_intn; - hub->gpio_connect = pdata->gpio_connect; - hub->gpio_reset = pdata->gpio_reset; hub->mode = pdata->initial_mode; } else if (np) { u32 rate = 0; @@ -230,59 +227,38 @@ static int usb3503_probe(struct usb3503 *hub) } } - hub->gpio_intn = of_get_named_gpio(np, "intn-gpios", 0); - if (hub->gpio_intn == -EPROBE_DEFER) - return -EPROBE_DEFER; - hub->gpio_connect = of_get_named_gpio(np, "connect-gpios", 0); - if (hub->gpio_connect == -EPROBE_DEFER) - return -EPROBE_DEFER; - hub->gpio_reset = of_get_named_gpio(np, "reset-gpios", 0); - if (hub->gpio_reset == -EPROBE_DEFER) - return -EPROBE_DEFER; of_property_read_u32(np, "initial-mode", &mode); hub->mode = mode; } - if (hub->port_off_mask && !hub->regmap) - dev_err(dev, "Ports disabled with no control interface\n"); - - if (gpio_is_valid(hub->gpio_intn)) { - int val = hub->secondary_ref_clk ? GPIOF_OUT_INIT_LOW : - GPIOF_OUT_INIT_HIGH; - err = devm_gpio_request_one(dev, hub->gpio_intn, val, - "usb3503 intn"); - if (err) { - dev_err(dev, - "unable to request GPIO %d as interrupt pin (%d)\n", - hub->gpio_intn, err); - return err; - } - } - - if (gpio_is_valid(hub->gpio_connect)) { - err = devm_gpio_request_one(dev, hub->gpio_connect, - GPIOF_OUT_INIT_LOW, "usb3503 connect"); - if (err) { - dev_err(dev, - "unable to request GPIO %d as connect pin (%d)\n", - hub->gpio_connect, err); - return err; - } - } - - if (gpio_is_valid(hub->gpio_reset)) { - err = devm_gpio_request_one(dev, hub->gpio_reset, - GPIOF_OUT_INIT_LOW, "usb3503 reset"); + if (hub->secondary_ref_clk) + flags = GPIOD_OUT_LOW; + else + flags = GPIOD_OUT_HIGH; + hub->intn = devm_gpiod_get_optional(dev, "intn", flags); + if (IS_ERR(hub->intn)) + return PTR_ERR(hub->intn); + if (hub->intn) + gpiod_set_consumer_name(hub->intn, "usb3503 intn"); + + hub->connect = devm_gpiod_get_optional(dev, "connect", GPIOD_OUT_LOW); + if (IS_ERR(hub->connect)) + return PTR_ERR(hub->connect); + if (hub->connect) + gpiod_set_consumer_name(hub->connect, "usb3503 connect"); + + hub->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH); + if (IS_ERR(hub->reset)) + return PTR_ERR(hub->reset); + if (hub->reset) { /* Datasheet defines a hardware reset to be at least 100us */ usleep_range(100, 10000); - if (err) { - dev_err(dev, - "unable to request GPIO %d as reset pin (%d)\n", - hub->gpio_reset, err); - return err; - } + gpiod_set_consumer_name(hub->reset, "usb3503 reset"); } + if (hub->port_off_mask && !hub->regmap) + dev_err(dev, "Ports disabled with no control interface\n"); + usb3503_switch_mode(hub, hub->mode); dev_info(dev, "%s: probed in %s mode\n", __func__, diff --git a/include/linux/platform_data/usb3503.h b/include/linux/platform_data/usb3503.h index e049d51c1353..d01ef97ddf36 100644 --- a/include/linux/platform_data/usb3503.h +++ b/include/linux/platform_data/usb3503.h @@ -17,9 +17,6 @@ enum usb3503_mode { struct usb3503_platform_data { enum usb3503_mode initial_mode; u8 port_off_mask; - int gpio_intn; - int gpio_connect; - int gpio_reset; }; #endif