linux-kernel - Re: [PATCH] platform: cros_ec: Add fields to command traces

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Message-ID: <CAHQZ30Cz-C7_xEV6G2=P6yVjiF_VNhCc4H5BJ961m-ai8OUNFQ@mail.gmail.com>
Date:   Wed, 26 Aug 2020 09:23:50 -0600
From:   Raul Rangel <rrangel@...omium.org>
To:     Gwendal Grignou <gwendal@...omium.org>
Cc:     Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Guenter Roeck <groeck@...omium.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] platform: cros_ec: Add fields to command traces

On Fri, Aug 14, 2020 at 9:39 PM Gwendal Grignou <gwendal@...omium.org> wrote:
>
> In ftrace, add more fields to the cros_ec command event:
> - Add size of commands to check if they are properly set.
> - Add offset (in case an EC is cascaded being another EC),
> to allow proper command output
>
> With:
> echo 1 > events/cros_ec/cros_ec_cmd/enable
> We now have (on samus)
>
> invalid command for the sensor stack:
> ectool-6942  [002] ....  3082.783116: cros_ec_request_done: version: 3,
>  offset: 0, command: EC_CMD_MOTION_SENSE_CMD, outsize: 2, insize: 19,
>  ec result: EC_RES_INVALID_PARAM, retval: 0
>
> powerd accessing PD EC being the main EC:
> powerd-1272  [002] ....    40.644026: cros_ec_request_done: version: 0,
>  offset: 1, command: EC_CMD_USB_PD_POWER_INFO, outsize: 1, insize: 16,
>  ec result: EC_RES_SUCCESS, retval: 16
>
> Signed-off-by: Gwendal Grignou <gwendal@...omium.org>

Acked-by: Raul E Rangel <rrangel@...omium.org>