From patchwork Wed Apr 20 13:34:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 565298 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6342FC433EF for ; Wed, 20 Apr 2022 13:35:43 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 0163A1AA4; Wed, 20 Apr 2022 15:34:50 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 0163A1AA4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1650461741; bh=GHrFOdpg6TspBSfnDAG+ZUkqiO+u514wMfcPZJ/f39M=; h=From:To:Subject:Date:Cc:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:List-Subscribe:From; b=YjS3TvUpdWyefTkI0nOtal/NUCzhyZYYWoBv3O3o4WpTlX4V6CokpUM7bnzkJyJ9Q e0WIwtsS/GAjc5TFiC2P4Bjbk7b/MMH/8gt3jqGD0udaRWUsuXkiA/bqpxWjjZuQPx ZhoLzXLvCZVvfGMhYmpHy0x28pZvpjtHMyaIUeBs= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 88B79F80116; Wed, 20 Apr 2022 15:34:50 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 6695DF80125; Wed, 20 Apr 2022 15:34:48 +0200 (CEST) Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 77699F800F8 for ; Wed, 20 Apr 2022 15:34:43 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 77699F800F8 Authentication-Results: alsa1.perex.cz; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="F8uPJlns" Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 30ECAB81D6E; Wed, 20 Apr 2022 13:34:43 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E35C3C385A1; Wed, 20 Apr 2022 13:34:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1650461682; bh=GHrFOdpg6TspBSfnDAG+ZUkqiO+u514wMfcPZJ/f39M=; h=From:To:Cc:Subject:Date:From; b=F8uPJlnsHpqEmINv3CBOCJD294sm5dfqM6MWCjtoXfgNxbLLetavt/FNbLRyMuQkh Hkn3jm2LzTcat6dlALOfmQyV6ZJZRsOxD1L1YZwSGYRNAgh/SWEbP+pXoNeNYKAVX/ n4ZFIcTCEAgeX89auYRVHWN6nahbpr4s11y/3iOxW0HFbFFraSl+T3gCFeSPApUB33 5z/B4VYWUOlyaC05SkRCVC5RAgYwktcCCrwTVJTvaPRNpAYDbhcDvLOaNZ/SrvML2M bzrDvUJ4DgapZvFADTXSOlkTTcqDBMBRBi8ZWh0G0bWornbP6+HfmbD367Vrg3MAQx mLhsfGpvoXJ8g== From: Mark Brown To: Support Opensource , Liam Girdwood Subject: [PATCH v3] ASoC: da7219: Fix change notifications for tone generator frequency Date: Wed, 20 Apr 2022 14:34:37 +0100 Message-Id: <20220420133437.569229-1-broonie@kernel.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1648; h=from:subject; bh=GHrFOdpg6TspBSfnDAG+ZUkqiO+u514wMfcPZJ/f39M=; b=owEBbQGS/pANAwAKASTWi3JdVIfQAcsmYgBiYAu12WDnBuqOCA/FrEsGT7yCDwHQQAjNv1YLGsRe 0Pbb2oqJATMEAAEKAB0WIQSt5miqZ1cYtZ/in+ok1otyXVSH0AUCYmALtQAKCRAk1otyXVSH0G96B/ 40Kki0Bf/4vX06GlBzuuwjPr0P4xvKUJSlFeZ7pS8P+tL6KGzOKOqACGAWOHETVnbJSApq3S3vOXNm dvxUcmJJtWocGY7MGh4pRz7EsQzj025Kox59BxKWUC2c15sj5i8D8OtyB5rVX5nKs8esgKZi5h/VVq FSqE6Saj2eDNdO2DJA0xcLgiAzKdUrJoN3iuMCSqilziwxtxE0QtF/1eg5+THHHB7eYS3Kagt9/0Tf dxAJxZdAOSa11x2T4RfDUHXMF0XH0ljP7SbDvwjX+4VY1mN2R/Z8EFPihSjY8dQ9N8N81ELPvdUFPd 2CtY11A5STWbb6bqnpcewrZnEaYjuo X-Developer-Key: i=broonie@kernel.org; a=openpgp; fpr=3F2568AAC26998F9E813A1C5C3F436CA30F5D8EB Cc: alsa-devel@alsa-project.org, Mark Brown X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" The tone generator frequency control just returns 0 on successful write, not a boolean value indicating if there was a change or not. Compare what was written with the value that was there previously so that notifications are generated appropriately when the value changes. Signed-off-by: Mark Brown --- sound/soc/codecs/da7219.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/sound/soc/codecs/da7219.c b/sound/soc/codecs/da7219.c index a28d3601b932..7fdef38ed8cd 100644 --- a/sound/soc/codecs/da7219.c +++ b/sound/soc/codecs/da7219.c @@ -446,7 +446,7 @@ static int da7219_tonegen_freq_put(struct snd_kcontrol *kcontrol, struct soc_mixer_control *mixer_ctrl = (struct soc_mixer_control *) kcontrol->private_value; unsigned int reg = mixer_ctrl->reg; - __le16 val; + __le16 val_new, val_old; int ret; /* @@ -454,13 +454,19 @@ static int da7219_tonegen_freq_put(struct snd_kcontrol *kcontrol, * Therefore we need to convert to little endian here to align with * HW registers. */ - val = cpu_to_le16(ucontrol->value.integer.value[0]); + val_new = cpu_to_le16(ucontrol->value.integer.value[0]); mutex_lock(&da7219->ctrl_lock); - ret = regmap_raw_write(da7219->regmap, reg, &val, sizeof(val)); + ret = regmap_raw_read(da7219->regmap, reg, &val_old, sizeof(val_old)); + if (ret == 0 && (val_old != val_new)) + ret = regmap_raw_write(da7219->regmap, reg, + &val_new, sizeof(val_new)); mutex_unlock(&da7219->ctrl_lock); - return ret; + if (ret < 0) + return ret; + + return val_old != val_new; }