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[216.228.112.21]) by smtp.gmail.com with ESMTPSA id f6sm13342385pfa.23.2020.08.01.01.00.03 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Sat, 01 Aug 2020 01:00:03 -0700 (PDT) Date: Sat, 1 Aug 2020 00:59:54 -0700 From: Nicolin Chen To: Shengjiu Wang Cc: timur@kernel.org, Xiubo.Lee@gmail.com, festevam@gmail.com, lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2] ASoC: fsl-asoc-card: Remove fsl_asoc_card_set_bias_level function Message-ID: <20200801075954.GA19629@Asurada-Nvidia> References: <1596102422-14010-1-git-send-email-shengjiu.wang@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1596102422-14010-1-git-send-email-shengjiu.wang@nxp.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Having two nits and one question, inline: On Thu, Jul 30, 2020 at 05:47:02PM +0800, Shengjiu Wang wrote: > @@ -182,6 +180,69 @@ static int fsl_asoc_card_hw_params(struct snd_pcm_substream *substream, > cpu_priv->slot_width); > if (ret && ret != -ENOTSUPP) { > dev_err(dev, "failed to set TDM slot for cpu dai\n"); > + goto out; > + } > + } > + > + /* Specific configuration for PLL */ > + if (codec_priv->pll_id && codec_priv->fll_id) { > + if (priv->sample_format == SNDRV_PCM_FORMAT_S24_LE) > + pll_out = priv->sample_rate * 384; > + else > + pll_out = priv->sample_rate * 256; > + > + ret = snd_soc_dai_set_pll(asoc_rtd_to_codec(rtd, 0), > + codec_priv->pll_id, > + codec_priv->mclk_id, > + codec_priv->mclk_freq, pll_out); > + if (ret) { > + dev_err(dev, "failed to start FLL: %d\n", ret); > + goto out; > + } > + > + ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), > + codec_priv->fll_id, > + pll_out, SND_SOC_CLOCK_IN); Just came into my mind: do we need some protection here to prevent PLL/SYSCLK reconfiguration if TX/RX end up with different values? > + return 0; > + > +out: > + priv->streams &= ~BIT(substream->stream); > + return ret; Rather than "out:" which doesn't explicitly indicate an error-out, "fail:" would be better, following what we used in probe(). > +static int fsl_asoc_card_hw_free(struct snd_pcm_substream *substream) > +{ > + struct snd_soc_pcm_runtime *rtd = substream->private_data; > + struct fsl_asoc_card_priv *priv = snd_soc_card_get_drvdata(rtd->card); > + struct codec_priv *codec_priv = &priv->codec_priv; > + struct device *dev = rtd->card->dev; > + int ret; > + > + priv->streams &= ~BIT(substream->stream); > + > + if (!priv->streams && codec_priv->pll_id && > + codec_priv->fll_id) { This now can fit into single line :)