linux-kernel - Re: [PATCH v6 05/18] clk: qcom: kpss-xcc: convert to parent data API

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Date:   Wed, 13 Apr 2022 22:38:23 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Ansuel Smith <ansuelsmth@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org
Subject: Re: [PATCH v6 05/18] clk: qcom: kpss-xcc: convert to parent data API

On 22/03/2022 02:15, Ansuel Smith wrote:
> Convert the driver to parent data API. From the Documentation pll8_vote
> and pxo should be declared in the DTS so fw_name can be used instead of
> parent_names. Name is still used to save regression on old definition.
> 
> Signed-off-by: Ansuel Smith <ansuelsmth@...il.com>
> ---
>   drivers/clk/qcom/kpss-xcc.c | 25 ++++++++-----------------
>   1 file changed, 8 insertions(+), 17 deletions(-)
> 
> diff --git a/drivers/clk/qcom/kpss-xcc.c b/drivers/clk/qcom/kpss-xcc.c
> index 4fec1f9142b8..347f70e9f5fe 100644
> --- a/drivers/clk/qcom/kpss-xcc.c
> +++ b/drivers/clk/qcom/kpss-xcc.c
> @@ -12,9 +12,9 @@
>   #include <linux/clk.h>
>   #include <linux/clk-provider.h>
>   
> -static const char *aux_parents[] = {
> -	"pll8_vote",
> -	"pxo",
> +static const struct clk_parent_data aux_parents[] = {
> +	{ .name = "pll8_vote", .fw_name = "pll8_vote" },

I'd just use "pll" here for the .fw_name.

> +	{ .name = "pxo", .fw_name = "pxo" },
>   };
>   
>   static unsigned int aux_parent_map[] = {
> @@ -32,8 +32,8 @@ MODULE_DEVICE_TABLE(of, kpss_xcc_match_table);
>   static int kpss_xcc_driver_probe(struct platform_device *pdev)
>   {
>   	const struct of_device_id *id;
> -	struct clk *clk;
>   	void __iomem *base;
> +	struct clk_hw *hw;
>   	const char *name;
>   
>   	id = of_match_device(kpss_xcc_match_table, &pdev->dev);
> @@ -55,24 +55,15 @@ static int kpss_xcc_driver_probe(struct platform_device *pdev)
>   		base += 0x28;
>   	}
>   
> -	clk = clk_register_mux_table(&pdev->dev, name, aux_parents,
> -				     ARRAY_SIZE(aux_parents), 0, base, 0, 0x3,
> -				     0, aux_parent_map, NULL);
> +	hw = __devm_clk_hw_register_mux(&pdev->dev, NULL, name, ARRAY_SIZE(aux_parents),
> +					NULL, NULL, aux_parents, 0, base, 0, 0x3,
> +					0, aux_parent_map, NULL);
>   
> -	platform_set_drvdata(pdev, clk);
> -
> -	return PTR_ERR_OR_ZERO(clk);
> -}
> -
> -static int kpss_xcc_driver_remove(struct platform_device *pdev)
> -{
> -	clk_unregister_mux(platform_get_drvdata(pdev));
> -	return 0;
> +	return PTR_ERR_OR_ZERO(hw);
>   }
>   
>   static struct platform_driver kpss_xcc_driver = {
>   	.probe = kpss_xcc_driver_probe,
> -	.remove = kpss_xcc_driver_remove,
>   	.driver = {
>   		.name = "kpss-xcc",
>   		.of_match_table = kpss_xcc_match_table,


-- 
With best wishes
Dmitry