linux-kernel - Re: [PATCH v2 2/3] extcon: max14577: Add proper dt-compatible strings

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Message-ID: <8ec0c604-8cdc-04f8-fc5c-fd967f52022b@samsung.com>
Date:   Fri, 22 May 2020 16:08:20 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     Marek Szyprowski <m.szyprowski@...sung.com>,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzk@...nel.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Sebastian Reichel <sre@...nel.org>,
        Mark Brown <broonie@...nel.org>
Subject: Re: [PATCH v2 2/3] extcon: max14577: Add proper dt-compatible
 strings

On 5/22/20 3:48 PM, Marek Szyprowski wrote:
> Add device tree compatible strings and create proper modalias structures
> to let this driver load automatically if compiled as module, because
> max14577 MFD driver creates MFD cells with such compatible strings.
> 
> Signed-off-by: Marek Szyprowski <m.szyprowski@...sung.com>
> ---
> v2:
> - added .of_match_table pointer
> ---
>  drivers/extcon/extcon-max14577.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/drivers/extcon/extcon-max14577.c b/drivers/extcon/extcon-max14577.c
> index 32f663436e6e..03af678ddeba 100644
> --- a/drivers/extcon/extcon-max14577.c
> +++ b/drivers/extcon/extcon-max14577.c
> @@ -782,9 +782,19 @@ static const struct platform_device_id max14577_muic_id[] = {
>  };
>  MODULE_DEVICE_TABLE(platform, max14577_muic_id);
>  
> +static const struct of_device_id of_max14577_muic_dt_match[] = {
> +	{ .compatible = "maxim,max77836-muic",
> +	  .data = (void *)MAXIM_DEVICE_TYPE_MAX77836, },
> +	{ .compatible = "maxim,max14577-muic",
> +	  .data = (void *)MAXIM_DEVICE_TYPE_MAX14577, },
> +	{ },

How about changing the order between max77836 and max14577 as already added structure
like platform_device_id if there are no specific reason as following:?


static const struct of_device_id of_max14577_muic_dt_match[] = {
	{ .compatible = "maxim,max14577-muic",
	  .data = (void *)MAXIM_DEVICE_TYPE_MAX14577, },
	{ .compatible = "maxim,max77836-muic",
	  .data = (void *)MAXIM_DEVICE_TYPE_MAX77836, },
	{ },



> +};
> +MODULE_DEVICE_TABLE(of, of_max14577_muic_dt_match);
> +
>  static struct platform_driver max14577_muic_driver = {
>  	.driver		= {
>  		.name	= "max14577-muic",
> +		.of_match_table = of_max14577_muic_dt_match,
>  	},
>  	.probe		= max14577_muic_probe,
>  	.remove		= max14577_muic_remove,
> 


-- 
Best Regards,
Chanwoo Choi
Samsung Electronics