From patchwork Thu Mar 18 11:52:09 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?QmVuY2UgQ3PDs2vDoXM=?= X-Patchwork-Id: 405059 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=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,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 4F603C433DB for ; Thu, 18 Mar 2021 11:36:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 00AF564F2A for ; Thu, 18 Mar 2021 11:36:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229896AbhCRLgK (ORCPT ); Thu, 18 Mar 2021 07:36:10 -0400 Received: from mail.sch.bme.hu ([152.66.249.140]:15944 "EHLO mail.sch.bme.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230125AbhCRLfx (ORCPT ); Thu, 18 Mar 2021 07:35:53 -0400 Received: from Exchange2016-1.sch.bme.hu (152.66.249.140) by Exchange2016-1.sch.bme.hu (152.66.249.140) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2176.2; Thu, 18 Mar 2021 12:35:47 +0100 Received: from Cognitio.sch.bme.hu (152.66.211.220) by Exchange2016-1.sch.bme.hu (152.66.249.140) with Microsoft SMTP Server id 15.1.2176.2 via Frontend Transport; Thu, 18 Mar 2021 12:35:47 +0100 From: =?utf-8?b?QmVuY2UgQ3PDs2vDoXM=?= To: CC: =?utf-8?b?QmVuY2UgQ3PDs2vDoXM=?= , Subject: [PATCH v3 1/2] i2c: Add I2C_AQ_NO_REP_START adapter quirk Date: Thu, 18 Mar 2021 11:52:09 +0000 Message-ID: <20210318115210.2014204-2-bence98@sch.bme.hu> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210318115210.2014204-1-bence98@sch.bme.hu> References: <20210318115210.2014204-1-bence98@sch.bme.hu> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org This quirk signifies that the adapter cannot do a repeated START, it always issues a STOP condition after transfers. Signed-off-by: Bence Csókás --- include/linux/i2c.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 56622658b215..a670ae129f4b 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -687,6 +687,8 @@ 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