linux-kernel - Re: [PATCH 2/6] interconnect: qcom: Implement xlate

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Message-ID: <9bb9aa9c-b9da-ffb3-01e8-0e1ebece18a9@codeaurora.org>
Date:   Mon, 27 Jul 2020 20:17:35 +0530
From:   Sibi Sankar <sibis@...eaurora.org>
To:     Georgi Djakov <georgi.djakov@...aro.org>
Cc:     linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        bjorn.andersson@...aro.org, robh+dt@...nel.org, mka@...omium.org,
        dianders@...omium.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/6] interconnect: qcom: Implement xlate_extended() to
 parse tags

Hey Georgi,

Thanks for the patch!

On 7/23/20 6:39 PM, Georgi Djakov wrote:
> Implement a function to parse the arguments of the "interconnects" DT
> property and populate the interconnect path tags if this information
> is available.
> 
> Signed-off-by: Georgi Djakov <georgi.djakov@...aro.org>
> ---
>   drivers/interconnect/qcom/icc-rpmh.c | 27 +++++++++++++++++++++++++++
>   drivers/interconnect/qcom/icc-rpmh.h |  1 +
>   2 files changed, 28 insertions(+)
> 
> diff --git a/drivers/interconnect/qcom/icc-rpmh.c b/drivers/interconnect/qcom/icc-rpmh.c
> index 3ac5182c9ab2..44144fabec32 100644
> --- a/drivers/interconnect/qcom/icc-rpmh.c
> +++ b/drivers/interconnect/qcom/icc-rpmh.c
> @@ -6,6 +6,8 @@
>   #include <linux/interconnect.h>
>   #include <linux/interconnect-provider.h>
>   #include <linux/module.h>
> +#include <linux/of.h>
> +#include <linux/slab.h>
>   
>   #include "bcm-voter.h"
>   #include "icc-rpmh.h"
> @@ -92,6 +94,31 @@ int qcom_icc_set(struct icc_node *src, struct icc_node *dst)
>   }
>   EXPORT_SYMBOL_GPL(qcom_icc_set);
>   
> +struct icc_node_data *qcom_icc_xlate_extended(struct of_phandle_args *spec, void *data)
> +{
> +	struct icc_node_data *ndata;
> +	struct icc_node *node;
> +
> +	if (!spec)
> +		return ERR_PTR(-EINVAL);
> +

you could probably skip ^^ check

Tested-by: Sibi Sankar <sibis@...eaurora.org>
Reviewed-by: Sibi Sankar <sibis@...eaurora.org>

> +	node = of_icc_xlate_onecell(spec, data);
> +	if (IS_ERR(node))
> +		return ERR_CAST(node);
> +
> +	ndata = kzalloc(sizeof(*ndata), GFP_KERNEL);
> +	if (!ndata)
> +		return ERR_PTR(-ENOMEM);
> +
> +	ndata->node = node;
> +
> +	if (spec->args_count == 2)
> +		ndata->tag = spec->args[1];
> +
> +	return ndata;
> +}
> +EXPORT_SYMBOL_GPL(qcom_icc_xlate_extended);
> +
>   /**
>    * qcom_icc_bcm_init - populates bcm aux data and connect qnodes
>    * @bcm: bcm to be initialized
> diff --git a/drivers/interconnect/qcom/icc-rpmh.h b/drivers/interconnect/qcom/icc-rpmh.h
> index 903d25e61984..1dac39bc255d 100644
> --- a/drivers/interconnect/qcom/icc-rpmh.h
> +++ b/drivers/interconnect/qcom/icc-rpmh.h
> @@ -143,6 +143,7 @@ struct qcom_icc_desc {
>   int qcom_icc_aggregate(struct icc_node *node, u32 tag, u32 avg_bw,
>   		       u32 peak_bw, u32 *agg_avg, u32 *agg_peak);
>   int qcom_icc_set(struct icc_node *src, struct icc_node *dst);
> +struct icc_node_data *qcom_icc_xlate_extended(struct of_phandle_args *spec, void *data);
>   int qcom_icc_bcm_init(struct qcom_icc_bcm *bcm, struct device *dev);
>   void qcom_icc_pre_aggregate(struct icc_node *node);
>   
> 
> 
> 

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