linux-kernel - Re: [PATCH v1 1/1] extcon: ptn5150: Add usb-typec support for Intel LGM SoC

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Message-ID: <4b1edd2e-4791-3f12-206f-9277435cdf59@samsung.com>
Date:   Tue, 25 Aug 2020 19:46:00 +0900
From:   Chanwoo Choi <cw00.choi@...sung.com>
To:     "Ramuthevar,Vadivel MuruganX" 
        <vadivel.muruganx.ramuthevar@...ux.intel.com>,
        linux-kernel@...r.kernel.org
Cc:     vijaikumar.kanagarajan@...il.com, krzk@...nel.org,
        myungjoo.ham@...sung.com, cheol.yong.kim@...el.com,
        qi-ming.wu@...el.com, yin1.li@...el.com
Subject: Re: [PATCH v1 1/1] extcon: ptn5150: Add usb-typec support for Intel
 LGM SoC

Hi,

On 8/25/20 5:31 PM, Ramuthevar,Vadivel MuruganX wrote:
> From: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>
> 
> Add usb-typec detection support for Intel LGM SoC based
> boards.
> 
> Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>
> ---
>  drivers/extcon/extcon-ptn5150.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/extcon/extcon-ptn5150.c b/drivers/extcon/extcon-ptn5150.c
> index 8ba706fad887..60355a1b5cb2 100644
> --- a/drivers/extcon/extcon-ptn5150.c
> +++ b/drivers/extcon/extcon-ptn5150.c
> @@ -300,6 +300,8 @@ static int ptn5150_i2c_probe(struct i2c_client *i2c)
>  		return ret;
>  	}
>  
> +	extcon_set_property_capability(info->edev, EXTCON_USB_HOST,
> +				       EXTCON_PROP_USB_TYPEC_POLARITY);

extcon_set_property_capability() just sets the capability
of EXTCON_PROP_USB_TYPEC_POLARITY property.

If you want to set the value (0 or 1) of EXTCON_PROP_USB_TYPEC_POLARITY,
we have to call extcon_set_property() function. But, this patch doesn't
set the any value of EXTCON_PROP_USB_TYPEC_POLARITY property.

Why do you only use extcon_set_property_capability()
without the proper extcon_set_property()?

>  	/* Initialize PTN5150 device and print vendor id and version id */
>  	ret = ptn5150_init_dev_type(info);
>  	if (ret)
> 


-- 
Best Regards,
Chanwoo Choi
Samsung Electronics