From patchwork Fri Feb 26 12:12:22 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kiran Gunda X-Patchwork-Id: 387821 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=-11.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,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 E49F7C433DB for ; Fri, 26 Feb 2021 12:13:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9D5F864EEE for ; Fri, 26 Feb 2021 12:13:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230083AbhBZMNp (ORCPT ); Fri, 26 Feb 2021 07:13:45 -0500 Received: from m42-2.mailgun.net ([69.72.42.2]:31718 "EHLO m42-2.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229989AbhBZMNo (ORCPT ); Fri, 26 Feb 2021 07:13:44 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1614341605; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=Cmqghx6zhcQDDabwf+FgyE0f9AAgFN3Iix4YVts5sgY=; b=SUBRs4TM3fX8MivTVWL0psLyWi1kO/UqF87KPeKtQ2hlIxqHeEXQzPJUjDNbI4ZXqDeF+9MX T7Bxb4ZrHAbQ0UiPPmq+UOUBp/R9NsYArCIF5YpSt8GtartZ8h3OJO5dkezN0BUbERXwRmWm 5Wx67FScq7AIXVDH5kDMiPCbpf4= X-Mailgun-Sending-Ip: 69.72.42.2 X-Mailgun-Sid: WyI1YmJiNiIsICJkZXZpY2V0cmVlQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n04.prod.us-east-1.postgun.com with SMTP id 6038e5c59a7cefa92a6a6f30 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Fri, 26 Feb 2021 12:12:53 GMT Sender: kgunda=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 8635AC43463; Fri, 26 Feb 2021 12:12:52 +0000 (UTC) Received: from kgunda-linux.qualcomm.com (unknown [202.46.22.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: kgunda) by smtp.codeaurora.org (Postfix) with ESMTPSA id 3F910C433CA; Fri, 26 Feb 2021 12:12:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 3F910C433CA Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=kgunda@codeaurora.org From: Kiran Gunda To: bjorn.andersson@linaro.org, jingoohan1@gmail.com, lee.jones@linaro.org, b.zolnierkie@samsung.com, dri-devel@lists.freedesktop.org, daniel.thompson@linaro.org, jacek.anaszewski@gmail.com, pavel@ucw.cz, robh+dt@kernel.org, mark.rutland@arm.com, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org, phone-devel@vger.kernel.org, Kiran Gunda Subject: [PATCH V2 0/2] Fix WLED FSC Sync and brightness Sync settings Date: Fri, 26 Feb 2021 17:42:22 +0530 Message-Id: <1614341544-5306-1-git-send-email-kgunda@codeaurora.org> X-Mailer: git-send-email 2.7.4 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This patch series has the following two WLED fixes 1. As per the current implementation, for WLED5, after the FSC (Full Scale Current) update the driver is incorrectly toggling the MOD_SYNC register instead of toggling the SYNC register. The patch 1/2 fixes this by toggling the SYNC register after FSC update. 2. Currently, the sync bits are transitioned from 1 to 0 after FSC and brightness update. As per hardware team recommendation the FSC and brightness sync takes place from 0 to 1 transition. The patch 2/2 fies this issue. Changes from V1: 1. Updated the cover letter. 2. Updated the description of the patches as per Daniel's suggestion. Kiran Gunda (2): backlight: qcom-wled: Fix FSC update issue for WLED5 backlight: qcom-wled: Correct the sync_toggle sequence drivers/video/backlight/qcom-wled.c | 37 +++++++++++++++++++++++++------------ 1 file changed, 25 insertions(+), 12 deletions(-) Reviewed-by: Daniel Thompson