Re: [PATCH] ASoC: qcom: soundwire: Enable soundwire bus clock for version 1.6

From: Srinivasa Rao Mandadapu <srivasam@codeaurora.org>
To: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
	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>
Subject: Re: [PATCH] ASoC: qcom: soundwire: Enable soundwire bus clock for version 1.6
Date: Tue, 5 Oct 2021 19:43:06 +0530	[thread overview]
Message-ID: <2c18ff0c-cd24-356c-0104-086837ed7ff0@codeaurora.org> (raw)
In-Reply-To: <a2b6a9c7-2191-4bc9-b03b-3b22b495a4be@linux.intel.com>


On 10/1/2021 11:27 PM, Pierre-Louis Bossart wrote:
Thanks for Your time Bossart!!!
>> @@ -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?
Okay. will update it.
>
>> +		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;
>
> ?
I think here error check is not required, as this change is required 
only for soundwire version 1.6 and above.
>> +
>>   	ret = qcom_swrm_get_port_config(ctrl);
>>   	if (ret)
>>   		goto err_clk;
>>
-- 
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