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 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 15B2FC5475B for ; Mon, 11 Mar 2024 12:03:56 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rjeNN-0004gr-Rr; Mon, 11 Mar 2024 08:03:29 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rjeNJ-0004f1-9u for qemu-devel@nongnu.org; Mon, 11 Mar 2024 08:03:26 -0400 Received: from mail-wr1-x42e.google.com ([2a00:1450:4864:20::42e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rjeNH-0005Ec-Hz for qemu-devel@nongnu.org; Mon, 11 Mar 2024 08:03:25 -0400 Received: by mail-wr1-x42e.google.com with SMTP id ffacd0b85a97d-33e92b3b5c9so1277029f8f.2 for ; Mon, 11 Mar 2024 05:03:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1710158602; x=1710763402; darn=nongnu.org; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=dV5UyBtfTTwJ57CNR7ZwV91eZXWHKrV3a0l3VoK3FYI=; b=OZLavTV/xMOfKwQe5IbNpWB7jXKFT79MHbHeZIn68XnpUlKWDJJzijr3TKJnH4aH55 AtXnXKUe92YABWKzKMqIyHKwzHIB6IL4aL0CLe4xC8C2y+UCmm3dtst/TJA4EsTquPj0 Ot6yUdXsyt/w2JKM3qYKboyJ3QclwuirP+KNIBqJnv452koTF0BYHGYwkuv5Jt68DwuP zG0fsqSE8S5r/H5SlAsoy+7ELSgGs9qK9YkbRhsGGmFJHSNHbGaXaeDh2LRrUM3ZhMP4 idfm/YR81Dg0JqCl6plxQPS1P36nXH2aGijd3Z4Q16HUvzu75Xijmf1hc4f9Hh0zh2aN ppcA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1710158602; x=1710763402; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=dV5UyBtfTTwJ57CNR7ZwV91eZXWHKrV3a0l3VoK3FYI=; b=UphLY+2+JaMmorzeRjRtfB/8iBucIpxuervLH6yty5IxxBiyv7BGPcTdJx1aF87vmj cI067JDMSSwWPH4rUPmVfsvIsBGzhYWJtCYt+K3i9MGPL9YIvMy71p6iomOC4KELUdCz oqd0mcTX03F3q1cvCSm6i850KDWvplAERIKqXpmf2uck4TuRv4u/YeSigt1dHtDreRUL vsNH9UVCPe9TjJ3PK/81N1U4UGzrMURY/xaBRxWSexGkQrXMYkkSAKv0Epa5c+KjnzCx CD+hn1WtpS3jeCTETvATc+D1KDJn5Yx/uRJtdcdQlJ6E/YR25DqT/p5DlYl3UJA4lerq Iq0g== X-Forwarded-Encrypted: i=1; AJvYcCUG4BwFxL05/w2wMgmvs7Pu30Sy2J5c2CS6pTRJuGrx1liGgZq1OWdnUf7HTkA/zJ61WwmNTe9PhlbxU6kZQqWqr/J0FeQ= X-Gm-Message-State: AOJu0Yzw1CvvhfOTli1fME8YCp3cD1QhjgR+mrncQM9/UTxT6ppuZ/FK P/gGa4/5ubkQAdTAjrQb5+oAkBInHfnUnesbwvRYTEyV6ZLeXLKtmA7TFb4z8wx0bbGFzsOB0be z X-Google-Smtp-Source: AGHT+IHGRgPxaNb2OXRXi66p2l7v68iVE6maUO0oPpI1Si0YI0QNQuKxLXEldTpkKoKIkfAelhRUVQ== X-Received: by 2002:a05:6000:cc:b0:33d:226e:3769 with SMTP id q12-20020a05600000cc00b0033d226e3769mr4174610wrx.55.1710158601759; Mon, 11 Mar 2024 05:03:21 -0700 (PDT) Received: from [192.168.69.100] ([176.176.167.228]) by smtp.gmail.com with ESMTPSA id bj28-20020a0560001e1c00b0033e7de97214sm6355145wrb.40.2024.03.11.05.03.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 11 Mar 2024 05:03:21 -0700 (PDT) Message-ID: Date: Mon, 11 Mar 2024 13:03:19 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3] hw: gpio: introduce pcf8574 driver Content-Language: en-US To: Dmitriy Sharikhin , "qemu-devel@nongnu.org" Cc: Igor Kononenko , "Alexander A. Filippov" , Alexander Amelkin References: From: =?UTF-8?Q?Philippe_Mathieu-Daud=C3=A9?= In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2a00:1450:4864:20::42e; envelope-from=philmd@linaro.org; helo=mail-wr1-x42e.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 11/3/24 10:58, Dmitriy Sharikhin wrote: > NXP PCF8574 and compatible ICs are simple I2C GPIO expanders. > PCF8574 incorporates quasi-bidirectional IO, and simple > communication protocol, when IO read is I2C byte read, and > IO write is I2C byte write. User can think of it as > open-drain port, when line high state is input and line low > state is output. > > Signed-off-by: Dmitrii Sharikhin If a patch is reviewed, please carry reviewers' tag: https://www.qemu.org/docs/master/devel/submitting-a-patch.html#proper-use-of-reviewed-by-tags-can-aid-review Reviewed-by: Philippe Mathieu-Daudé > --- > MAINTAINERS | 6 ++ > hw/gpio/Kconfig | 4 + > hw/gpio/meson.build | 1 + > hw/gpio/pcf8574.c | 162 ++++++++++++++++++++++++++++++++++++++ > include/hw/gpio/pcf8574.h | 15 ++++ > 5 files changed, 188 insertions(+) > create mode 100644 hw/gpio/pcf8574.c > create mode 100644 include/hw/gpio/pcf8574.h