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[23.128.96.18]) by mx.google.com with ESMTP id w20si5870221ejb.430.2021.05.31.10.25.09; Mon, 31 May 2021 10:25:32 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=bdkmrEDa; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232532AbhEaRXo (ORCPT + 99 others); Mon, 31 May 2021 13:23:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52758 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232057AbhEaRXd (ORCPT ); Mon, 31 May 2021 13:23:33 -0400 Received: from mail-pl1-x631.google.com (mail-pl1-x631.google.com [IPv6:2607:f8b0:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 19C15C0467CF; Mon, 31 May 2021 08:49:15 -0700 (PDT) Received: by mail-pl1-x631.google.com with SMTP id e7so3338588plj.7; Mon, 31 May 2021 08:49:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=FCdzBejJr3ualFFCFvEugffbkYhoyf/lVFS4X8bD45o=; b=bdkmrEDaz1FRvAfbP7TEn1zpt+08TJLzgN0LCEFc0B6LANz/eeGCSH1WJs+wJGcaW9 Wvnt/rRLUr+RFoH/1l0KVEmqZfwig9fqj41XSHQX67B9TGJPJJMaBItcXgaP6fJ69ViH ImisCYxqJIc4QfwgVuvM3JPvIpfvGXB4/wMNCk54jrHiiUyv42YHjayS9I9XX6I8jLQl R7JNQND/bAQrvd1ZHU2fOmLMRBg9yCe5Cy3AWPkA3217mWEn5MSEUK9m/Ldvh0v32hlI spxq2Owd+pDNlYVK/Ce0+NgAsytZ8ft+tBK9BfQUwlmp779cBoC8pZHOoVtwhD4CttfK 51Tw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=FCdzBejJr3ualFFCFvEugffbkYhoyf/lVFS4X8bD45o=; b=izwF2usFfDvYuAm8x79TFAq3iTwXDo9OCdJyQp8PiOi4gJ3/8/D/qP1amoK0q16fP1 nFC45YOW2mST3+L1CSIpwcwepZ/LTR2STeVMbrpIg9FmXozkKqnwwTaqnLqFqHdEXNBc m+0p0vHjWdOAfbAe7BzuLGIHnK6UhUF0qm/2M+1yBVX7xlpGLoi/eR/bKxt74QIcNEmR 2M/1KQwgpGrpDSyuQIdGPNx2yi4fdWyplGAILFahMN2ZW4JF/z3I4ZBYSR4lKaVSkjSQ I4aZ+nckgijtGVrcDXyAiM093MUAZXuaqYcLUCuBDIV8vuUW+F0niTxsNUXqvHb/9yHy DF6g== X-Gm-Message-State: AOAM530cNJOmz2Qd42MhUh5tHuyWW/Sq1JYZ9WqemDdhKBTUMR8uWjY2 HdK9veYuJEeXEbZKaZIBbu9LYL+h29E+hkSw4X8= X-Received: by 2002:a17:90a:17ad:: with SMTP id q42mr20113550pja.181.1622476154635; Mon, 31 May 2021 08:49:14 -0700 (PDT) MIME-Version: 1.0 References: <02bbf73ea8a14119247f07a677993aad2f45b088.camel@svanheule.net> <84352c93f27d7c8b7afea54f3932020e9cd97d02.camel@svanheule.net> <7a9978881e9ec5d4b811fa6e5d355fb6bce6f6d8.camel@svanheule.net> <0047200eecbd7ee480258cc904d6b7ee@walle.cc> <272ac6af4a5ba5df4bb085617c9267e5ece61c19.camel@svanheule.net> In-Reply-To: <272ac6af4a5ba5df4bb085617c9267e5ece61c19.camel@svanheule.net> From: Andy Shevchenko Date: Mon, 31 May 2021 18:48:58 +0300 Message-ID: Subject: Re: [PATCH 0/5] RTL8231 GPIO expander support To: Sander Vanheule Cc: Michael Walle , Hans de Goede , Andrew Lunn , Pavel Machek , Rob Herring , Lee Jones , Mark Brown , Greg Kroah-Hartman , "Rafael J . Wysocki" , Linus Walleij , Bartosz Golaszewski , Linux LED Subsystem , devicetree , "open list:GPIO SUBSYSTEM" , Linux Kernel Mailing List Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, May 31, 2021 at 6:33 PM Sander Vanheule wrote: > On Mon, 2021-05-31 at 14:16 +0300, Andy Shevchenko wrote: > > On Monday, May 31, 2021, Michael Walle wrote: > > > Am 2021-05-31 10:36, schrieb Sander Vanheule: > Am I missing something here? It seems to me like the regmap interface can't > really accommodate what's required, unless maybe the rtl8231 regmap users > perform some manual locking. This all seems terribly complicated compared to > using an internal output-value cache inside regmap-gpio. Have you had a chance to look into the PCA953x driver? Sounds to me that you are missing the APIs that regmap provides. -- With Best Regards, Andy Shevchenko