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=-19.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 547DCC43470 for ; Wed, 5 May 2021 17:11:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 461DA6102A for ; Wed, 5 May 2021 17:11:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239037AbhEERK2 (ORCPT ); Wed, 5 May 2021 13:10:28 -0400 Received: from mail.kernel.org ([198.145.29.99]:49796 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237738AbhEERBF (ORCPT ); Wed, 5 May 2021 13:01:05 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 8591A619E6; Wed, 5 May 2021 16:40:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1620232828; bh=fE8jg5uAIRl/bt8t+FQsXsgY5X3KlleAIN93G7Ume60=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=amgc2EP8GfGEPfzpOacA7gE9tX+SEQrh1iAINIyXgjP0jU1mPF7egClWyQ7fPdEfp S6u3BW08wQ1er7eHB2hZ76tmg8jez0sL/VHaKRPUq26pNIFKAYKy1mQK8bh0+0EJvQ Qy+Wzg+MNzDgmfC7IYF0ne9QFohEMwf6lXLiK5f/p7bFmGhehgLn3iVT7+k+z5RR9x j2ap66fgI1k2DYis9GbBEEOAYOq//Q4VcEX5IVwHvpgBHyLT4mb+LZ1UoroYJMIgb4 KXhDSG1bRaZ8V8O1noFlTzShxK47I+yE/zPzJBOn42GngaY3jXbvItMEwlQVpi6LGx l6+tXMy2ejSxQ== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: =?UTF-8?q?Bence=20Cs=C3=B3k=C3=A1s?= , Wolfram Sang , Sasha Levin , linux-i2c@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 16/32] i2c: Add I2C_AQ_NO_REP_START adapter quirk Date: Wed, 5 May 2021 12:39:48 -0400 Message-Id: <20210505164004.3463707-16-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210505164004.3463707-1-sashal@kernel.org> References: <20210505164004.3463707-1-sashal@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Bence Csókás [ Upstream commit aca01415e076aa96cca0f801f4420ee5c10c660d ] This quirk signifies that the adapter cannot do a repeated START, it always issues a STOP condition after transfers. Suggested-by: Wolfram Sang Signed-off-by: Bence Csókás Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- include/linux/i2c.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 7e748648c7d3..6fda0458745d 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -662,6 +662,8 @@ struct i2c_adapter_quirks { #define I2C_AQ_NO_ZERO_LEN_READ BIT(5) #define I2C_AQ_NO_ZERO_LEN_WRITE BIT(6) #define I2C_AQ_NO_ZERO_LEN (I2C_AQ_NO_ZERO_LEN_READ | I2C_AQ_NO_ZERO_LEN_WRITE) +/* adapter cannot do repeated START */ +#define I2C_AQ_NO_REP_START BIT(7) /* * i2c_adapter is the structure used to identify a physical i2c bus along -- 2.30.2