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From:   Peter Chen <peter.chen@nxp.com>
To:     Pawel Laszczak <pawell@cadence.com>
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        "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>,
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Subject: Re: [PATCH 6/9] usb: cdns3: Added CDNS3_ID_PERIPHERAL and
 CDNS3_ID_HOST
Thread-Topic: [PATCH 6/9] usb: cdns3: Added CDNS3_ID_PERIPHERAL and
 CDNS3_ID_HOST
Thread-Index: AQHWT3AYVVVPDhft+UO/YATov584VKj7sXqA
Date:   Tue, 7 Jul 2020 06:30:50 +0000
Message-ID: <20200707063059.GE16073@b29397-desktop>
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 <20200701062004.29908-7-pawell@cadence.com>
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On 20-07-01 08:20:01, Pawel Laszczak wrote:
> Patch adds 2 definitions that make it easier to understand the code.
>=20
> Signed-off-by: Pawel Laszczak <pawell@cadence.com>
> ---
>  drivers/usb/cdns3/drd.c | 4 ++--
>  drivers/usb/cdns3/drd.h | 3 +++
>  2 files changed, 5 insertions(+), 2 deletions(-)
>=20
> diff --git a/drivers/usb/cdns3/drd.c b/drivers/usb/cdns3/drd.c
> index 6fe092c828b3..8e7673da905e 100644
> --- a/drivers/usb/cdns3/drd.c
> +++ b/drivers/usb/cdns3/drd.c
> @@ -87,7 +87,7 @@ bool cdns3_is_host(struct cdns3 *cdns)
>  {
>  	if (cdns->dr_mode =3D=3D USB_DR_MODE_HOST)
>  		return true;
> -	else if (!cdns3_get_id(cdns))
> +	else if (cdns3_get_id(cdns) =3D=3D CDNS3_ID_HOST)
>  		return true;
> =20
>  	return false;
> @@ -98,7 +98,7 @@ bool cdns3_is_device(struct cdns3 *cdns)
>  	if (cdns->dr_mode =3D=3D USB_DR_MODE_PERIPHERAL)
>  		return true;
>  	else if (cdns->dr_mode =3D=3D USB_DR_MODE_OTG)
> -		if (cdns3_get_id(cdns))
> +		if (cdns3_get_id(cdns) =3D=3D CDNS3_ID_PERIPHERAL)
>  			return true;
> =20
>  	return false;
> diff --git a/drivers/usb/cdns3/drd.h b/drivers/usb/cdns3/drd.h
> index 35b6d459ee58..3889fead9df1 100644
> --- a/drivers/usb/cdns3/drd.h
> +++ b/drivers/usb/cdns3/drd.h
> @@ -153,6 +153,9 @@ struct cdns3_otg_common_regs {
>  /* Only for CDNS3_CONTROLLER_V0 version */
>  #define OVERRIDE_IDPULLUP_V0		BIT(24)
> =20
> +#define CDNS3_ID_PERIPHERAL		1
> +#define CDNS3_ID_HOST			0
> +

Instead of adding MACRO, I prefer adding comments at the code to indicate
"ID=3D0" means it is host mode, "ID=3D1" means it is device mode.

--=20

Thanks,
Peter Chen=