linux-kernel - Re: [PATCH v2 12/16] ASoC: qcom: audioreach: add q6prm support

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Message-ID: <50357647-7478-3848-74c4-1de50851d5d0@linaro.org>
Date:   Thu, 15 Jul 2021 11:32:33 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        bjorn.andersson@...aro.org, broonie@...nel.org, robh@...nel.org
Cc:     devicetree@...r.kernel.org, alsa-devel@...a-project.org,
        bgoswami@...eaurora.org, lgirdwood@...il.com, tiwai@...e.de,
        plai@...eaurora.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 12/16] ASoC: qcom: audioreach: add q6prm support



On 14/07/2021 18:09, Pierre-Louis Bossart wrote:
> 
> 
> 
>> +static int q6prm_send_cmd_sync(struct q6prm *prm, struct gpr_pkt *pkt,
>> +			uint32_t rsp_opcode)
>> +{
>> +	gpr_device_t *gdev = prm->gdev;
>> +	struct gpr_hdr *hdr = &pkt->hdr;
>> +	int rc;
>> +
>> +	mutex_lock(&prm->lock);
>> +	prm->result.opcode = 0;
>> +	prm->result.status = 0;
>> +
>> +	rc = gpr_send_pkt(prm->gdev, pkt);
>> +	if (rc < 0)
>> +		goto err;
>> +
>> +	if (rsp_opcode)
>> +		rc = wait_event_timeout(prm->wait,
>> +					(prm->result.opcode == hdr->opcode) ||
>> +					(prm->result.opcode == rsp_opcode),
>> +					5 * HZ);
>> +	else
>> +		rc = wait_event_timeout(prm->wait,
>> +					(prm->result.opcode == hdr->opcode),
>> +					5 * HZ);
>> +
>> +	if (!rc) {
>> +		dev_err(&gdev->dev, "CMD timeout for [%x] opcode\n",
>> +			hdr->opcode);
>> +		rc = -ETIMEDOUT;
>> +	} else if (prm->result.status > 0) {
>> +		dev_err(&gdev->dev, "DSP returned error[%x] %x\n", hdr->opcode,
>> +			prm->result.status);
>> +		rc = -EINVAL;
>> +	} else {
>> +		dev_err(&gdev->dev, "DSP returned [%x]\n",
>> +			prm->result.status);
>> +		rc = 0;
>> +	}
>> +
>> +err:
>> +	mutex_unlock(&prm->lock);
>> +	return rc;
>> +}
> 
> In patch7 you had more or less the same code. can a helper be used?

Its possible, will abstract this out in audioreach.c.


> 
> +int audioreach_graph_send_cmd_sync(struct q6apm_graph *graph,
> +				   struct gpr_pkt *pkt, uint32_t rsp_opcode)
> +{
> +
> +	struct device *dev = graph->dev;
> +	struct gpr_hdr *hdr = &pkt->hdr;
> +	int rc;
> +
> +	mutex_lock(&graph->cmd_lock);
> +	graph->result.opcode = 0;
> +	graph->result.status = 0;
> +
> +	rc = gpr_send_port_pkt(graph->port, pkt);
> +	if (rc < 0)
> +		goto err;
> +
> +	if (rsp_opcode)
> +		rc = wait_event_timeout(graph->cmd_wait,
> +					(graph->result.opcode == hdr->opcode) ||
> +					(graph->result.opcode == rsp_opcode),
> +					5 * HZ);
> +	else
> +		rc = wait_event_timeout(graph->cmd_wait,
> +					(graph->result.opcode == hdr->opcode),
> +					5 * HZ);
> +
> +	if (!rc) {
> +		dev_err(dev, "CMD timeout for [%x] opcode\n", hdr->opcode);
> +		rc = -ETIMEDOUT;
> +	} else if (graph->result.status > 0) {
> +		dev_err(dev, "DSP returned error[%x] %x\n", hdr->opcode,
> +			graph->result.status);
> +		rc = -EINVAL;
> +	} else {
> +		dev_err(dev, "DSP returned [%x]\n", graph->result.status);
> +		rc = 0;
> +	}
> +
> +err:
> +	mutex_unlock(&graph->cmd_lock);
> +	return rc;
> +}
> +EXPORT_SYMBOL_GPL(audioreach_graph_send_cmd_sync);
> 
> 
>> +static int q6prm_set_hw_core_req(struct device *dev, uint32_t hw_block_id,   bool enable)
>> +{
>> +	struct prm_cmd_request_hw_core *req;
>> +	struct apm_module_param_data *param_data;
>> +	struct gpr_pkt *pkt;
>> +	struct q6prm *prm = dev_get_drvdata(dev);
>> +	gpr_device_t *gdev  = prm->gdev;
>> +	void *p;
>> +	int rc = 0;
>> +	uint32_t opcode, rsp_opcode;
>> +
>> +	if (enable) {
>> +		opcode = PRM_CMD_REQUEST_HW_RSC;
>> +		rsp_opcode = PRM_CMD_RSP_REQUEST_HW_RSC;
>> +	} else {
>> +		opcode = PRM_CMD_RELEASE_HW_RSC;
>> +		rsp_opcode = PRM_CMD_RSP_RELEASE_HW_RSC;
>> +	}
>> +
>> +	p = audioreach_alloc_cmd_pkt(sizeof(*req), opcode, 0, gdev->svc.id,
>> +				     GPR_PRM_MODULE_IID);
>> +	if (IS_ERR(p))
>> +		return -ENOMEM;
>> +
>> +	pkt = p;
>> +	req = p + GPR_HDR_SIZE + APM_CMD_HDR_SIZE;
>> +
>> +	param_data = &req->param_data;
>> +
>> +	param_data->module_instance_id = GPR_PRM_MODULE_IID;
>> +	param_data->error_code = 0;
>> +	param_data->param_id = PARAM_ID_RSC_HW_CORE;
>> +	param_data->param_size = sizeof(*req) - APM_MODULE_PARAM_DATA_SIZE;
>> +
>> +	req->hw_clk_id = hw_block_id;
>> +
>> +	q6prm_send_cmd_sync(prm, pkt, rsp_opcode);
>> +
>> +	kfree(pkt);
>> +
>> +	return rc;
> 
> rc is not assigned, should this not trap the result of sending a command?
My bad! will fix such instances.


--srini