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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, 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 C58F6C43461 for ; Mon, 19 Apr 2021 13:12:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id ABC4C613AA for ; Mon, 19 Apr 2021 13:12:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239862AbhDSNMp (ORCPT ); Mon, 19 Apr 2021 09:12:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:46792 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239830AbhDSNLB (ORCPT ); Mon, 19 Apr 2021 09:11:01 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id ADF5461354; Mon, 19 Apr 2021 13:10:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1618837830; bh=9HYb50dPi1Ae7Y1/yULlTErcIe6566C6lYN22Ozqe0A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=2j0jINhSbDGz8yQfTiasY15zqPl5ZTAmu/8NXqUK6Tb93PBhtZtvMvDMG3LAmd7KW 7uCje0ORY3pX55bhzPSdFxHP4yhuEn4ZOU3d0DOpd4hH819dLYj2OwXMUjxdIOAUvb ekGQSQtQbFxlXajQgXftZ3IedLelvbOXy3t4kTYQ= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ryan Lee , Mark Brown , Sasha Levin Subject: [PATCH 5.11 024/122] ASoC: max98373: Changed amp shutdown register as volatile Date: Mon, 19 Apr 2021 15:05:04 +0200 Message-Id: <20210419130530.985796543@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210419130530.166331793@linuxfoundation.org> References: <20210419130530.166331793@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ryan Lee [ Upstream commit a23f9099ff1541f15704e96b784d3846d2a4483d ] 0x20FF(amp global enable) register was defined as non-volatile, but it is not. Overheating, overcurrent can cause amp shutdown in hardware. 'regmap_write' compare register readback value before writing to avoid same value writing. 'regmap_read' just read cache not actual hardware value for the non-volatile register. When amp is internally shutdown by some reason, next 'AMP ON' command can be ignored because regmap think amp is already ON. Signed-off-by: Ryan Lee Link: https://lore.kernel.org/r/20210325033555.29377-1-ryans.lee@maximintegrated.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/codecs/max98373-i2c.c | 1 + sound/soc/codecs/max98373-sdw.c | 1 + 2 files changed, 2 insertions(+) diff --git a/sound/soc/codecs/max98373-i2c.c b/sound/soc/codecs/max98373-i2c.c index 85f6865019d4..ddb6436835d7 100644 --- a/sound/soc/codecs/max98373-i2c.c +++ b/sound/soc/codecs/max98373-i2c.c @@ -446,6 +446,7 @@ static bool max98373_volatile_reg(struct device *dev, unsigned int reg) case MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK: case MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK: case MAX98373_R20B6_BDE_CUR_STATE_READBACK: + case MAX98373_R20FF_GLOBAL_SHDN: case MAX98373_R21FF_REV_ID: return true; default: diff --git a/sound/soc/codecs/max98373-sdw.c b/sound/soc/codecs/max98373-sdw.c index b8d471d79e93..1a1f97f24601 100644 --- a/sound/soc/codecs/max98373-sdw.c +++ b/sound/soc/codecs/max98373-sdw.c @@ -220,6 +220,7 @@ static bool max98373_volatile_reg(struct device *dev, unsigned int reg) case MAX98373_R2054_MEAS_ADC_PVDD_CH_READBACK: case MAX98373_R2055_MEAS_ADC_THERM_CH_READBACK: case MAX98373_R20B6_BDE_CUR_STATE_READBACK: + case MAX98373_R20FF_GLOBAL_SHDN: case MAX98373_R21FF_REV_ID: /* SoundWire Control Port Registers */ case MAX98373_R0040_SCP_INIT_STAT_1 ... MAX98373_R0070_SCP_FRAME_CTLR: -- 2.30.2