Re: [PATCH 3/9] ASoC: codecs: lpass-rx-macro: add support for SM8550

From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>,
	Andy Gross <agross@kernel.org>,
	Bjorn Andersson <andersson@kernel.org>,
	Konrad Dybcio <konrad.dybcio@linaro.org>,
	Banajit Goswami <bgoswami@quicinc.com>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Mark Brown <broonie@kernel.org>, Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
	linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/9] ASoC: codecs: lpass-rx-macro: add support for SM8550
Date: Sat, 11 Mar 2023 11:23:57 +0000	[thread overview]
Message-ID: <5b923d49-c151-0ed7-3db1-a7caf85109f3@linaro.org> (raw)
In-Reply-To: <20230310132201.322148-4-krzysztof.kozlowski@linaro.org>

Thanks Krzysztof for adding this support.
Few minor nits,

On 10/03/2023 13:21, Krzysztof Kozlowski wrote:
> Add support for the RX macro codec on Qualcomm SM8550.  SM8550 does not
> use NPL clock, thus add flags allowing to skip it.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> ---
>   sound/soc/codecs/lpass-rx-macro.c | 39 ++++++++++++++++++++++++-------
>   1 file changed, 31 insertions(+), 8 deletions(-)
> 
> diff --git a/sound/soc/codecs/lpass-rx-macro.c b/sound/soc/codecs/lpass-rx-macro.c
> index a73a7d7a1c0a..e322d918db36 100644
> --- a/sound/soc/codecs/lpass-rx-macro.c
> +++ b/sound/soc/codecs/lpass-rx-macro.c
> @@ -395,6 +395,9 @@
>   #define COMP_MAX_COEFF 25
>   #define RX_NUM_CLKS_MAX	5
>   
> +/* NPL clock is expected */
> +#define RX_MACRO_FLAG_HAS_NPL_CLOCK		BIT(0)

We could probably rename it and move it to 
sound/soc/codecs/lpass-macro-common.h as this equally applies to all the 
codec macros.

Once done,

Reviewed-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

> +
>   struct comp_coeff_val {
>   	u8 lsb;
>   	u8 msb;
> @@ -3491,7 +3494,10 @@ static int rx_macro_register_mclk_output(struct rx_macro *rx)
>   	struct clk_init_data init;
>   	int ret;
>   
> -	parent_clk_name = __clk_get_name(rx->npl);
> +	if (rx->npl)
> +		parent_clk_name = __clk_get_name(rx->npl);
> +	else
> +		parent_clk_name = __clk_get_name(rx->mclk);
>   
>   	init.name = clk_name;
>   	init.ops = &swclk_gate_ops;
> @@ -3521,10 +3527,13 @@ static const struct snd_soc_component_driver rx_macro_component_drv = {
>   static int rx_macro_probe(struct platform_device *pdev)
>   {
>   	struct device *dev = &pdev->dev;
> +	kernel_ulong_t flags;
>   	struct rx_macro *rx;
>   	void __iomem *base;
>   	int ret;
>   
> +	flags = (kernel_ulong_t)device_get_match_data(dev);
> +
>   	rx = devm_kzalloc(dev, sizeof(*rx), GFP_KERNEL);
>   	if (!rx)
>   		return -ENOMEM;
> @@ -3541,9 +3550,11 @@ static int rx_macro_probe(struct platform_device *pdev)
>   	if (IS_ERR(rx->mclk))
>   		return PTR_ERR(rx->mclk);
>   
> -	rx->npl = devm_clk_get(dev, "npl");
> -	if (IS_ERR(rx->npl))
> -		return PTR_ERR(rx->npl);
> +	if (flags & RX_MACRO_FLAG_HAS_NPL_CLOCK) {
> +		rx->npl = devm_clk_get(dev, "npl");
> +		if (IS_ERR(rx->npl))
> +			return PTR_ERR(rx->npl);
> +	}
>   
>   	rx->fsgen = devm_clk_get(dev, "fsgen");
>   	if (IS_ERR(rx->fsgen))
> @@ -3655,10 +3666,22 @@ static int rx_macro_remove(struct platform_device *pdev)
>   }
>   
>   static const struct of_device_id rx_macro_dt_match[] = {
> -	{ .compatible = "qcom,sc7280-lpass-rx-macro" },
> -	{ .compatible = "qcom,sm8250-lpass-rx-macro" },
> -	{ .compatible = "qcom,sm8450-lpass-rx-macro" },
> -	{ .compatible = "qcom,sc8280xp-lpass-rx-macro" },
> +	{
> +		.compatible = "qcom,sc7280-lpass-rx-macro",
> +		.data = (void *)RX_MACRO_FLAG_HAS_NPL_CLOCK,
> +
> +	}, {
> +		.compatible = "qcom,sm8250-lpass-rx-macro",
> +		.data = (void *)RX_MACRO_FLAG_HAS_NPL_CLOCK,
> +	}, {
> +		.compatible = "qcom,sm8450-lpass-rx-macro",
> +		.data = (void *)RX_MACRO_FLAG_HAS_NPL_CLOCK,
> +	}, {
> +		.compatible = "qcom,sm8550-lpass-rx-macro",
> +	}, {
> +		.compatible = "qcom,sc8280xp-lpass-rx-macro",
> +		.data = (void *)RX_MACRO_FLAG_HAS_NPL_CLOCK,
> +	},
>   	{ }
>   };
>   MODULE_DEVICE_TABLE(of, rx_macro_dt_match);