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GET /api/patches/816627/?format=api
{ "id": 816627, "url": "http://patchwork.ozlabs.org/api/patches/816627/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20170921010421.7467-3-f.fainelli@gmail.com/", "project": { "id": 42, "url": "http://patchwork.ozlabs.org/api/projects/42/?format=api", "name": "Linux GPIO development", "link_name": "linux-gpio", "list_id": "linux-gpio.vger.kernel.org", "list_email": "linux-gpio@vger.kernel.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20170921010421.7467-3-f.fainelli@gmail.com>", "list_archive_url": null, "date": "2017-09-21T01:04:21", "name": "[2/2] pinctrl: single: Allow indicating loss of pin states during low-power", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "60aad551736fff2710ad68e658f8dbfd1d57a524", "submitter": { "id": 2800, "url": "http://patchwork.ozlabs.org/api/people/2800/?format=api", "name": "Florian Fainelli", "email": "f.fainelli@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-gpio/patch/20170921010421.7467-3-f.fainelli@gmail.com/mbox/", "series": [ { "id": 4266, "url": "http://patchwork.ozlabs.org/api/series/4266/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-gpio/list/?series=4266", "date": "2017-09-21T01:04:19", "name": "pinctrl: Allow indicating loss of state across suspend/resume", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/4266/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/816627/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/816627/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<linux-gpio-owner@vger.kernel.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@bilbo.ozlabs.org", "Authentication-Results": [ "ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=vger.kernel.org\n\t(client-ip=209.132.180.67; helo=vger.kernel.org;\n\tenvelope-from=linux-gpio-owner@vger.kernel.org;\n\treceiver=<UNKNOWN>)", "ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=gmail.com header.i=@gmail.com\n\theader.b=\"KefR379A\"; dkim-atps=neutral" ], "Received": [ "from vger.kernel.org (vger.kernel.org [209.132.180.67])\n\tby ozlabs.org (Postfix) with ESMTP id 3xyJLV20YMz9s0Z\n\tfor <incoming@patchwork.ozlabs.org>;\n\tThu, 21 Sep 2017 11:05:06 +1000 (AEST)", "(majordomo@vger.kernel.org) by vger.kernel.org via listexpand\n\tid S1751842AbdIUBEw (ORCPT <rfc822;incoming@patchwork.ozlabs.org>);\n\tWed, 20 Sep 2017 21:04:52 -0400", "from mail-qk0-f195.google.com ([209.85.220.195]:36106 \"EHLO\n\tmail-qk0-f195.google.com\" rhost-flags-OK-OK-OK-OK) by vger.kernel.org\n\twith ESMTP id S1752061AbdIUBEa (ORCPT\n\t<rfc822; linux-gpio@vger.kernel.org>); Wed, 20 Sep 2017 21:04:30 -0400", "by mail-qk0-f195.google.com with SMTP id i14so2749774qke.3;\n\tWed, 20 Sep 2017 18:04:30 -0700 (PDT)", "from stb-bld-03.irv.broadcom.com ([192.19.255.250])\n\tby smtp.gmail.com with ESMTPSA id\n\tt2sm184971qkd.16.2017.09.20.18.04.27\n\t(version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128);\n\tWed, 20 Sep 2017 18:04:28 -0700 (PDT)" ], "DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=gmail.com; s=20161025;\n\th=from:to:cc:subject:date:message-id:in-reply-to:references;\n\tbh=3SkuoBocuF6/O0ljKePbhr2keAYSIgicBYaWd3R+MQ8=;\n\tb=KefR379AO5Npmpkmirz3cxqdcli4HkKpuBk/s3KniidBDyhWchdXVswgt+gjlrV6b7\n\t1F+5OtlHElk6pR8gb0zHJMjwj/0pxHj1fCA/1F2a63k3SVxU5/Bpc6TA+h2FKAr+37JD\n\ttQzuxq/qnUwzIfOsKScMs0XVsAl8sN7QizkAdP47U63HDTq08bPYPqzvzgLn5heQYHyr\n\tqnKNSOFDducjLqmpJJ7gfTH5JPas0ncSiQt5f4S8g1ilvwmz6LAIODsxOe2+vNnsT4xO\n\tgB2aDOPJ0Iu9gzpm1TPBDv+57O48FuCmzsrPL39rhEWw3JiC61jE0PzR/WphOhc8xISi\n\tsO2Q==", "X-Google-DKIM-Signature": "v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20161025;\n\th=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to\n\t:references;\n\tbh=3SkuoBocuF6/O0ljKePbhr2keAYSIgicBYaWd3R+MQ8=;\n\tb=kqmgCWrC6aifIBc8yVhahfa33Ow+u/Dq44//LplbtTm9jCHGkRKmxnOF27ex2hEpO8\n\tDjqAozpqvmgx2oYmuGrFWPgPXArzoSQ3DulnwDclavqNIMxsbqLZxWXLhI2MrRDl3hZX\n\trmL2CYUV2ZHGl8Tg9cToypwL1IApbbZy6pkRCSiF0LN0ajdrFfGwD+B1BW1hhAEUiK0g\n\tKFjf0krbkWv5FfkxGcqHQyOKcbZ+3tLnex7CE3mUIDbVz/eKMENlMqZKtMu3JUAyqui7\n\tsFmyy6jii9GjrW6bNIPUIZCOJv+WDJt16pRijrXac4HzLF4Vyi3g5g7EZtLvFdkw4LA+\n\tDOsQ==", "X-Gm-Message-State": "AHPjjUiQ44s0U2L2nI1BPN0Nhb//oGlQo4Brg5gWJMPADfISJwEl+yq3\n\tUhxukxxVKDVJT5ptd40fO7vth1Ls", "X-Google-Smtp-Source": "AOwi7QAM/7kqbDAOfkw6J5W6lDSpKaDxBISmx2WvkA69kU9jFxDw+6zlzbt6EhbZnH2bjZ0NScZacA==", "X-Received": "by 10.55.161.85 with SMTP id k82mr832750qke.158.1505955869778;\n\tWed, 20 Sep 2017 18:04:29 -0700 (PDT)", "From": "Florian Fainelli <f.fainelli@gmail.com>", "To": "linux-kernel@vger.kernel.org", "Cc": "linus.walleij@linaro.org, swarren@nvidia.com,\n\tandy.shevchenko@gmail.com, alcooperx@gmail.com,\n\tlinux-gpio@vger.kernel.org, devicetree@vger.kernel.org,\n\trobh+dt@kernel.org, mark.rutland@arm.com,\n\tbcm-kernel-feedback-list@broadcom.com,\n\tFlorian Fainelli <f.fainelli@gmail.com>", "Subject": "[PATCH 2/2] pinctrl: single: Allow indicating loss of pin states\n\tduring low-power", "Date": "Wed, 20 Sep 2017 18:04:21 -0700", "Message-Id": "<20170921010421.7467-3-f.fainelli@gmail.com>", "X-Mailer": "git-send-email 2.14.1", "In-Reply-To": "<20170921010421.7467-1-f.fainelli@gmail.com>", "References": "<20170921010421.7467-1-f.fainelli@gmail.com>", "Sender": "linux-gpio-owner@vger.kernel.org", "Precedence": "bulk", "List-ID": "<linux-gpio.vger.kernel.org>", "X-Mailing-List": "linux-gpio@vger.kernel.org" }, "content": "Some platforms (e.g: Broadcom STB: BMIPS_GENERIC/ARCH_BRCMSTB) will lose\ntheir register contents when entering their lower power state. In such a\ncase, the pinctrl-single driver that is used will not be able to restore\nthe power states without telling the core about it and having\npinctrl_select_state() check for that.\n\nThis patch adds a new optional boolean property that Device Tree can\ndefine in order to obtain exactly that and having the core pinctrl code\ntake that into account.\n\nSigned-off-by: Florian Fainelli <f.fainelli@gmail.com>\n---\n Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt | 4 ++++\n drivers/pinctrl/pinctrl-single.c | 3 +++\n 2 files changed, 7 insertions(+)", "diff": "diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt\nindex e705acd3612c..e71967f6a1a7 100644\n--- a/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt\n+++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-single.txt\n@@ -82,6 +82,10 @@ Optional properties:\n \t\t/* pin base, nr pins & gpio function */\n \t\tpinctrl-single,gpio-range = <&range 0 3 0 &range 3 9 1>;\n \n+- pinctrl-single,low-power-state-loss : indicates that the pins lose their\n+ state during low power modes and therefore need to be restored upon\n+ system resumption.\n+\n - interrupt-controller : standard interrupt controller binding if using\n interrupts for wake-up events for example. In this case pinctrl-single\n is set up as a chained interrupt controller and the wake-up interrupts\ndiff --git a/drivers/pinctrl/pinctrl-single.c b/drivers/pinctrl/pinctrl-single.c\nindex b8b3d932cd73..d69d20b8247a 100644\n--- a/drivers/pinctrl/pinctrl-single.c\n+++ b/drivers/pinctrl/pinctrl-single.c\n@@ -1749,6 +1749,9 @@ static int pcs_probe(struct platform_device *pdev)\n \t\tgoto free;\n \t}\n \n+\tif (of_property_read_bool(np, \"pinctrl-single,low-power-state-loss\"))\n+\t\tpcs->pctl->flags |= PINCTRL_FLG_FORCE_STATE;\n+\n \tret = pcs_add_gpio_func(np, pcs);\n \tif (ret < 0)\n \t\tgoto free;\n", "prefixes": [ "2/2" ] }