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Subject: Re: [PATCH] ASoC: qcom: soundwire: Enable soundwire bus clock for
 version 1.6
To:     Srinivasa Rao Mandadapu <srivasam@codeaurora.org>,
        agross@kernel.org, bjorn.andersson@linaro.org, lgirdwood@gmail.com,
        broonie@kernel.org, robh+dt@kernel.org, plai@codeaurora.org,
        bgoswami@codeaurora.org, perex@perex.cz, tiwai@suse.com,
        srinivas.kandagatla@linaro.org, rohitkr@codeaurora.org,
        linux-arm-msm@vger.kernel.org, alsa-devel@alsa-project.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        swboyd@chromium.org, judyhsiao@chromium.org
Cc:     Venkata Prasad Potturu <potturu@codeaurora.org>
References: <1633105471-30928-1-git-send-email-srivasam@codeaurora.org>
From:   Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Message-ID: <a2b6a9c7-2191-4bc9-b03b-3b22b495a4be@linux.intel.com>
Date:   Fri, 1 Oct 2021 12:57:42 -0500
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> @@ -610,6 +611,12 @@ static int qcom_swrm_init(struct qcom_swrm_ctrl *ctrl)
>  	val = FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_ROW_CTRL_BMSK, ctrl->rows_index);
>  	val |= FIELD_PREP(SWRM_MCP_FRAME_CTRL_BANK_COL_CTRL_BMSK, ctrl->cols_index);
>  
> +	if (ctrl->swrm_hctl_reg) {
> +		val = ioread32(ctrl->swrm_hctl_reg);
> +		val &= 0xFFFFFFFD;

magic value, use a #define MASK_SOMETHING?

> +		iowrite32(val, ctrl->swrm_hctl_reg);
> +	}
> +
>  	ctrl->reg_write(ctrl, SWRM_MCP_FRAME_CTRL_BANK_ADDR(0), val);
>  
>  	/* Enable Auto enumeration */
> @@ -1200,7 +1207,7 @@ static int qcom_swrm_probe(struct platform_device *pdev)
>  	struct qcom_swrm_ctrl *ctrl;
>  	const struct qcom_swrm_data *data;
>  	int ret;
> -	u32 val;
> +	int val, swrm_hctl_reg = 0;
>  
>  	ctrl = devm_kzalloc(dev, sizeof(*ctrl), GFP_KERNEL);
>  	if (!ctrl)
> @@ -1251,6 +1258,9 @@ static int qcom_swrm_probe(struct platform_device *pdev)
>  	ctrl->bus.port_ops = &qcom_swrm_port_ops;
>  	ctrl->bus.compute_params = &qcom_swrm_compute_params;
>  
> +	if (!of_property_read_u32(dev->of_node, "qcom,swrm-hctl-reg", &swrm_hctl_reg))
> +		ctrl->swrm_hctl_reg = devm_ioremap(&pdev->dev, swrm_hctl_reg, 0x4);

if (!ctrl->swrm_hctl_reg)
    return -ENODEV;

?

> +
>  	ret = qcom_swrm_get_port_config(ctrl);
>  	if (ret)
>  		goto err_clk;
>