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=ham 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 DC93CC43461 for ; Wed, 5 May 2021 17:01:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id AD65B61415 for ; Wed, 5 May 2021 17:01:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236032AbhEERCY (ORCPT ); Wed, 5 May 2021 13:02:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:44942 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237060AbhEEQ5T (ORCPT ); Wed, 5 May 2021 12:57:19 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3A90761990; Wed, 5 May 2021 16:39:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1620232762; bh=lOLb1U/LFndGyUS9pSV47msKFv/hC0kgXkafKNJFgBg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EVYQu6RSZUmKT/edLggMNnDvR/xz4xAbs8KuGiMXCeixPT1UY4XJBG3RCqga3dMeX bmRHoe7FFzciOVNgWThVb10+9KCyn+Nm7xA+Z0S8XuJVEONiDIda+orKbeulCFM2rR 744oR1Jbv4Xwj54jfOmuTeUpN/gjcoAt12N9brHxpgXUFDTmFWn6hpOL0qgLVpcJ3m IUNVxa0fpdPKMoKXb/54V+9N9Q6+bHaBn2esIh3dEb4nPi4R8jDcTj3EgLO+MEZuag Fs97BzYM0rtoh7PGjrKwxsyvfZHHLNps9rhOnTZUGX6aFG6ee5/s1y6HejDX43o69U d8DjqRuqCDjzA== 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 5.4 18/46] i2c: Add I2C_AQ_NO_REP_START adapter quirk Date: Wed, 5 May 2021 12:38:28 -0400 Message-Id: <20210505163856.3463279-18-sashal@kernel.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210505163856.3463279-1-sashal@kernel.org> References: <20210505163856.3463279-1-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-i2c@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 1361637c369d..af2b799d7a66 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -677,6 +677,8 @@ 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