linux-kernel - Re: [PATCH v2 6/6] platform/chrome: cros_ec

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Message-ID: <20201109083122.GH4062920@kuha.fi.intel.com>
Date:   Mon, 9 Nov 2020 10:31:22 +0200
From:   Heikki Krogerus <heikki.krogerus@...ux.intel.com>
To:     Prashant Malani <pmalani@...omium.org>
Cc:     linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        gregkh@...uxfoundation.org, Benson Leung <bleung@...omium.org>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Guenter Roeck <groeck@...omium.org>
Subject: Re: [PATCH v2 6/6] platform/chrome: cros_ec_typec: Store cable plug
 type

On Fri, Nov 06, 2020 at 10:41:10AM -0800, Prashant Malani wrote:
> Use the PD VDO Type C cable plug type macro to retrieve and store the
> cable plug type in the cable descriptor.
> 
> Cc: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Signed-off-by: Prashant Malani <pmalani@...omium.org>

Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>

> ---
> 
> Changes in v2:
> - Changed local variable from uint32_to u32.
> 
>  drivers/platform/chrome/cros_ec_typec.c | 21 ++++++++++++++++++++-
>  1 file changed, 20 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/platform/chrome/cros_ec_typec.c b/drivers/platform/chrome/cros_ec_typec.c
> index 5e7f0b4ebbec..cf609aa10567 100644
> --- a/drivers/platform/chrome/cros_ec_typec.c
> +++ b/drivers/platform/chrome/cros_ec_typec.c
> @@ -709,6 +709,7 @@ static int cros_typec_handle_sop_prime_disc(struct cros_typec_data *typec, int p
>  		.port = port_num,
>  		.partner_type = TYPEC_PARTNER_SOP_PRIME,
>  	};
> +	u32 cable_plug_type;
>  	int ret = 0;
>  
>  	memset(disc, 0, EC_PROTO2_MAX_RESPONSE_SIZE);
> @@ -722,8 +723,26 @@ static int cros_typec_handle_sop_prime_disc(struct cros_typec_data *typec, int p
>  	/* Parse the PD identity data, even if only 0s were returned. */
>  	cros_typec_parse_pd_identity(&port->c_identity, disc);
>  
> -	if (disc->identity_count != 0)
> +	if (disc->identity_count != 0) {
> +		cable_plug_type = VDO_TYPEC_CABLE_TYPE(port->c_identity.vdo[0]);
> +		switch (cable_plug_type) {
> +		case CABLE_ATYPE:
> +			desc.type = USB_PLUG_TYPE_A;
> +			break;
> +		case CABLE_BTYPE:
> +			desc.type = USB_PLUG_TYPE_B;
> +			break;
> +		case CABLE_CTYPE:
> +			desc.type = USB_PLUG_TYPE_C;
> +			break;
> +		case CABLE_CAPTIVE:
> +			desc.type = USB_PLUG_CAPTIVE;
> +			break;
> +		default:
> +			desc.type = USB_PLUG_NONE;
> +		}
>  		desc.active = PD_IDH_PTYPE(port->c_identity.id_header) == IDH_PTYPE_ACABLE;
> +	}
>  
>  	desc.identity = &port->c_identity;
>  
> -- 
> 2.29.1.341.ge80a0c044ae-goog

thanks,

-- 
heikki