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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 45980C433F5 for ; Wed, 6 Oct 2021 15:11:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2FD2860E94 for ; Wed, 6 Oct 2021 15:11:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239184AbhJFPNh (ORCPT ); Wed, 6 Oct 2021 11:13:37 -0400 Received: from mga11.intel.com ([192.55.52.93]:30699 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239000AbhJFPNf (ORCPT ); Wed, 6 Oct 2021 11:13:35 -0400 X-IronPort-AV: E=McAfee;i="6200,9189,10129"; a="223411168" X-IronPort-AV: E=Sophos;i="5.85,352,1624345200"; d="scan'208";a="223411168" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Oct 2021 08:04:49 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.85,352,1624345200"; d="scan'208";a="545297465" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga004.fm.intel.com with ESMTP; 06 Oct 2021 08:04:46 -0700 Received: by black.fi.intel.com (Postfix, from userid 1003) id 629771C8; Wed, 6 Oct 2021 18:04:53 +0300 (EEST) From: Andy Shevchenko To: Mark Brown , alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org Cc: Cezary Rojewski , Pierre-Louis Bossart , Liam Girdwood , Jie Yang , Jaroslav Kysela , Takashi Iwai , Andy Shevchenko Subject: [PATCH v1 3/4] ASoC: Intel: bytcr_rt5651: use devm_clk_get_optional() for mclk Date: Wed, 6 Oct 2021 18:04:50 +0300 Message-Id: <20211006150451.16561-3-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211006150451.16561-1-andriy.shevchenko@linux.intel.com> References: <20211006150451.16561-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The devm_clk_get_optional() helper returns NULL when devm_clk_get() returns -ENOENT. This makes things slightly cleaner. The added benefit is mostly cosmetic. Signed-off-by: Andy Shevchenko --- sound/soc/intel/boards/bytcr_rt5651.c | 69 ++++++++++++--------------- 1 file changed, 30 insertions(+), 39 deletions(-) diff --git a/sound/soc/intel/boards/bytcr_rt5651.c b/sound/soc/intel/boards/bytcr_rt5651.c index 36f63516f0cb..28c561302e69 100644 --- a/sound/soc/intel/boards/bytcr_rt5651.c +++ b/sound/soc/intel/boards/bytcr_rt5651.c @@ -188,13 +188,10 @@ static int platform_clock_control(struct snd_soc_dapm_widget *w, } if (SND_SOC_DAPM_EVENT_ON(event)) { - if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) { - ret = clk_prepare_enable(priv->mclk); - if (ret < 0) { - dev_err(card->dev, - "could not configure MCLK state"); - return ret; - } + ret = clk_prepare_enable(priv->mclk); + if (ret < 0) { + dev_err(card->dev, "could not configure MCLK state"); + return ret; } ret = byt_rt5651_prepare_and_enable_pll1(codec_dai, 48000, 50); } else { @@ -207,8 +204,7 @@ static int platform_clock_control(struct snd_soc_dapm_widget *w, 48000 * 512, SND_SOC_CLOCK_IN); if (!ret) - if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) - clk_disable_unprepare(priv->mclk); + clk_disable_unprepare(priv->mclk); } if (ret < 0) { @@ -629,29 +625,25 @@ static int byt_rt5651_init(struct snd_soc_pcm_runtime *runtime) return ret; } - if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) { - /* - * The firmware might enable the clock at - * boot (this information may or may not - * be reflected in the enable clock register). - * To change the rate we must disable the clock - * first to cover these cases. Due to common - * clock framework restrictions that do not allow - * to disable a clock that has not been enabled, - * we need to enable the clock first. - */ - ret = clk_prepare_enable(priv->mclk); - if (!ret) - clk_disable_unprepare(priv->mclk); + /* + * The firmware might enable the clock at boot (this information + * may or may not be reflected in the enable clock register). + * To change the rate we must disable the clock first to cover + * these cases. Due to common clock framework restrictions that + * do not allow to disable a clock that has not been enabled, + * we need to enable the clock first. + */ + ret = clk_prepare_enable(priv->mclk); + if (!ret) + clk_disable_unprepare(priv->mclk); - if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ) - ret = clk_set_rate(priv->mclk, 25000000); - else - ret = clk_set_rate(priv->mclk, 19200000); + if (byt_rt5651_quirk & BYT_RT5651_MCLK_25MHZ) + ret = clk_set_rate(priv->mclk, 25000000); + else + ret = clk_set_rate(priv->mclk, 19200000); - if (ret) - dev_err(card->dev, "unable to set MCLK rate\n"); - } + if (ret) + dev_err(card->dev, "unable to set MCLK rate\n"); report = 0; if (BYT_RT5651_JDSRC(byt_rt5651_quirk)) @@ -1064,21 +1056,20 @@ static int snd_byt_rt5651_mc_probe(struct platform_device *pdev) byt_rt5651_dais[dai_index].cpus->dai_name = "ssp0-port"; if (byt_rt5651_quirk & BYT_RT5651_MCLK_EN) { - priv->mclk = devm_clk_get(dev, "pmc_plt_clk_3"); + priv->mclk = devm_clk_get_optional(dev, "pmc_plt_clk_3"); if (IS_ERR(priv->mclk)) { ret_val = PTR_ERR(priv->mclk); dev_err(dev, "Failed to get MCLK from pmc_plt_clk_3: %d\n", ret_val); - /* - * Fall back to bit clock usage for -ENOENT (clock not - * available likely due to missing dependencies), bail - * for all other errors, including -EPROBE_DEFER - */ - if (ret_val != -ENOENT) - goto err; - byt_rt5651_quirk &= ~BYT_RT5651_MCLK_EN; + goto err; } + /* + * Fall back to bit clock usage when clock is not + * available likely due to missing dependencies. + */ + if (!priv->mclk) + byt_rt5651_quirk &= ~BYT_RT5651_MCLK_EN; } snprintf(byt_rt5651_components, sizeof(byt_rt5651_components), -- 2.33.0