From mboxrd@z Thu Jan 1 00:00:00 1970 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=-3.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no 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 83D79C4CECE for ; Sun, 15 Mar 2020 12:14:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5670620674 for ; Sun, 15 Mar 2020 12:14:03 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ke634LkS" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728488AbgCOMOC (ORCPT ); Sun, 15 Mar 2020 08:14:02 -0400 Received: from mail-pg1-f195.google.com ([209.85.215.195]:34889 "EHLO mail-pg1-f195.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728467AbgCOMOC (ORCPT ); Sun, 15 Mar 2020 08:14:02 -0400 Received: by mail-pg1-f195.google.com with SMTP id 7so7951021pgr.2; Sun, 15 Mar 2020 05:14:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Xt9aen6glpugYoFyf1MaMxd1EvbCcDykTNsFcB6umqc=; b=ke634LkSp/PrbzfM2jQsQNdYs+y5r+Qdaz1rrMslQz7Hi9Ef77NXc/APeCesIYck+2 9c2MGXxoO01XxpX6uBAkgnhVYq7fGau47TCzsORnkfCp+HEa6TWuJ0stISHwpZheIW+G 73TQ8IU/mKjiu/Cbey1aFnhm7UKpMneQddTsY/KcYERI1Q1LS2OeQ0I3n7mOn4Qg3w2X iEh/uPmQVQpRT3JC64nXkr6zNEZvZXSo6wjFp/vfNkP3GONwIgbYumPgdGm3vcRvXGd/ d5rKF/JbeUhwUc3FzwYICsD6f0z9oXQZrJiOTAHB2FZ6MRf/amTbaPp8W9Wx4FnY46nG 2Yow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=Xt9aen6glpugYoFyf1MaMxd1EvbCcDykTNsFcB6umqc=; b=lYtoetXql4tQnKe+DRoze5NcdzDpw74Ohgi4zEr1tujzaQoXRSFpV9AZ8kfNc/QRNT bml8QPd5SrKGlgPhMoq+FHKKa5P/Txf9JL0Ug3Q06muTs63avXaaQbgrgWvX5kqMBTmo NreaIBEUlOeogVpzUf0MpWriuwchFtpKutEwodHgOnluwYmypZa3/KIkjnWd1Kyy12QR cP5Czq/zUuTwgNAxsCv4iYAw1JEnzxLkyvt2EMAKJ+0RUshtKlChpC31h18lbzbzi397 ev2uD1aHJg3mqV6zT8oQ0j4XCrdYiTllao4oj7G9ZVfiyPSzu3sEUXwiaC6qXhtufjQD HabQ== X-Gm-Message-State: ANhLgQ2ZZkiNtyTX7F/Tb1CyELODX9Ynn557+8gTtC5s53WB0Kztjl9/ E+md9fUkcRhbHwFAqNzF9yEcBvIH X-Google-Smtp-Source: ADFU+vskFw6BpawuLYm63vwxn2euxVBEH/W3DZyNtWOfIAUMDBwwQ9XQF1T9TD0WjaFQwHgvsv4ubw== X-Received: by 2002:a63:b4d:: with SMTP id a13mr20543302pgl.77.1584274440443; Sun, 15 Mar 2020 05:14:00 -0700 (PDT) Received: from guoguo-omen.lan ([240e:379:976:a075:bc02:9cda:8f71:1120]) by smtp.gmail.com with ESMTPSA id 5sm19869025pfw.98.2020.03.15.05.13.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 15 Mar 2020 05:13:59 -0700 (PDT) From: Chuanhong Guo To: linux-gpio@vger.kernel.org Cc: Chuanhong Guo , Linus Walleij , Bartosz Golaszewski , Sergio Paracuellos , =?UTF-8?q?Ren=C3=A9=20van=20Dorst?= , linux-kernel@vger.kernel.org (open list) Subject: [PATCH 0/2] gpio: mmio: introduce BGPIOF_NO_SET_ON_INPUT Date: Sun, 15 Mar 2020 20:13:36 +0800 Message-Id: <20200315121338.251362-1-gch981213@gmail.com> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 X-Patchwork-Bot: notify Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently gpio-hog doesn't work on gpio-mt7621 driver. On further debugging, I noticed that set/clear register on this controller only works on output pins. We need to setup pin direction before writing values in bgpio_dir_out for a correct gpio-hog behavior. This patchset introduces a new flag BGPIOF_NO_SET_ON_INPUT for these kind of controller and set this flag for gpio-mt7621. Chuanhong Guo (2): gpio: mmio: introduce BGPIOF_NO_SET_ON_INPUT gpio: mt7621: add BGPIOF_NO_SET_ON_INPUT flag drivers/gpio/gpio-mmio.c | 23 +++++++++++++++++++---- drivers/gpio/gpio-mt7621.c | 4 ++-- include/linux/gpio/driver.h | 1 + 3 files changed, 22 insertions(+), 6 deletions(-) -- 2.24.1