linux-kernel - Re: [PATCH 5/8] ASoC: rockchip: i2s-tdm: Fix clk_id usage in .set

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Date:   Thu, 8 Sep 2022 17:36:27 +0100
From:   Mark Brown <broonie@...nel.org>
To:     luca.ceresoli@...tlin.com
Cc:     alsa-devel@...a-project.org, linux-rockchip@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, Liam Girdwood <lgirdwood@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Nicolas Frattaroli <frattaroli.nicolas@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Johan Jonker <jbx6244@...il.com>,
        Chris Morgan <macromorgan@...mail.com>
Subject: Re: [PATCH 5/8] ASoC: rockchip: i2s-tdm: Fix clk_id usage in
 .set_sysclk()

On Wed, Sep 07, 2022 at 04:21:21PM +0200, luca.ceresoli@...tlin.com wrote:

> -static int rockchip_i2s_tdm_set_sysclk(struct snd_soc_dai *cpu_dai, int stream,
> +static int rockchip_i2s_tdm_set_sysclk(struct snd_soc_dai *cpu_dai, int clk_id,
>  				       unsigned int freq, int dir)
>  {
>  	struct rk_i2s_tdm_dev *i2s_tdm = to_info(cpu_dai);
> @@ -978,15 +981,18 @@ static int rockchip_i2s_tdm_set_sysclk(struct snd_soc_dai *cpu_dai, int stream,
>  	if (i2s_tdm->clk_trcm) {
>  		i2s_tdm->mclk_tx_freq = freq;
>  		i2s_tdm->mclk_rx_freq = freq;
> +
> +		dev_dbg(i2s_tdm->dev, "mclk freq: %u", freq);
>  	} else {
> -		if (stream == SNDRV_PCM_STREAM_PLAYBACK)
> +		if (clk_id == CLK_IDX_MCLK_TX)
>  			i2s_tdm->mclk_tx_freq = freq;
> -		else
> +		else if (clk_id == CLK_IDX_MCLK_RX)
>  			i2s_tdm->mclk_rx_freq = freq;
> -	}
> +		else
> +			return -ENOTSUPP;

This should be a switch statement for clarity and exensibility.

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