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=-3.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS, 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 38954C43381 for ; Thu, 21 Mar 2019 23:36:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 97E8F21900 for ; Thu, 21 Mar 2019 23:36:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=alliedtelesis.co.nz header.i=@alliedtelesis.co.nz header.b="m4TbOO9l" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727386AbfCUXgv (ORCPT ); Thu, 21 Mar 2019 19:36:51 -0400 Received: from gate2.alliedtelesis.co.nz ([202.36.163.20]:33337 "EHLO gate2.alliedtelesis.co.nz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726555AbfCUXgu (ORCPT ); Thu, 21 Mar 2019 19:36:50 -0400 Received: from mmarshal3.atlnz.lc (mmarshal3.atlnz.lc [10.32.18.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by gate2.alliedtelesis.co.nz (Postfix) with ESMTPS id 430E58066C; Fri, 22 Mar 2019 12:36:46 +1300 (NZDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=alliedtelesis.co.nz; s=mail181024; t=1553211406; bh=ASgEoS06bGTq5chChrbSHAh/0RRrpEwRt0bcX2Jr+UY=; h=From:To:Cc:Subject:Date; b=m4TbOO9lCa1se/e0VyiUAl6t87TJ8IN/JoctjlO0HrAjl/hRBGFcjvcyzjudJnn/L 4raUTPIccRI9a9ayuvD1Xg2Do98fz0dTDVJvMCPYpXfCJOVotFgLcpGqu3aV358+cj 84zqIwQ4z/DNQFEWrxMH0RI7+ZIg0EJ/27vfkggVEzbPm/SD3ibZWRBp31DnVnUCto wV+tFL5OBDX5NbLuOcDIhEHgWap/OQEu3sQBDgj79kHnyNwM0/6fdv1Gbveubxgb/G 1CqfI6qzjuLp1K7iM/vjg4AsAaGFlOLYj1GJuMWxM1xCrd1NoKSPMQwbJz1u2ldCKQ 9EKYGYTw32VNg== Received: from smtp (Not Verified[10.32.16.33]) by mmarshal3.atlnz.lc with Trustwave SEG (v7,5,8,10121) id ; Fri, 22 Mar 2019 12:36:44 +1300 Received: from richardl-dl.ws.atlnz.lc (richardl-dl.ws.atlnz.lc [10.33.23.10]) by smtp (Postfix) with ESMTP id EE91A13EC40; Fri, 22 Mar 2019 12:36:44 +1300 (NZDT) Received: by richardl-dl.ws.atlnz.lc (Postfix, from userid 1481) id C5ABF4C05D3; Fri, 22 Mar 2019 12:36:44 +1300 (NZDT) From: Richard Laing To: rjui@broadcom.com, bcm-kernel-feedback-list@broadcom.com Cc: linux-kernel@vger.kernel.org, Richard Laing Subject: [PATCH] Add I2C recovery handling for bcm-iproc based devices. Date: Fri, 22 Mar 2019 12:35:27 +1300 Message-Id: <20190321233528.16568-1-richard.laing@alliedtelesis.co.nz> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable x-atlnz-ls: pat Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch adds I2C bus recovery support to the bcm-iproc I2C driver. use the existing generic recovery mechanism by providing the hooks needed to get and set the SCL and SDA lines. The device must be placed in bit-bang mode before recovery starts and returned to normal operation when complete. Richard Laing (1): Add i2c recovery handling for bcm-iproc based devices. drivers/i2c/busses/i2c-bcm-iproc.c | 120 +++++++++++++++++++++++++++++++= ++++++ 1 file changed, 120 insertions(+) --=20 2.1.4