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Date:   Mon, 22 Feb 2021 21:07:54 -0800
From:   Dmitry Torokhov <dmitry.torokhov@gmail.com>
To:     Philip Chen <philipchen@chromium.org>
Cc:     LKML <linux-kernel@vger.kernel.org>, swboyd@chromium.org,
        dianders@chromium.org, Benson Leung <bleung@chromium.org>,
        Enric Balletbo i Serra <enric.balletbo@collabora.com>,
        Guenter Roeck <groeck@chromium.org>,
        Lee Jones <lee.jones@linaro.org>,
        Rajat Jain <rajatja@google.com>, linux-input@vger.kernel.org
Subject: Re: [PATCH v7 2/2] Input: cros-ec-keyb - Expose function row
 physical map to userspace
Message-ID: <YDSNqndb/GasqFs5@google.com>
References: <20210115122412.v7.1.I025fb861cd5fa0ef5286b7dce514728e9df7ae74@changeid>
 <20210115122412.v7.2.I6542d7d9d0b246e7079bb16b41e697b2ac4b4e39@changeid>
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On Fri, Jan 15, 2021 at 12:24:30PM -0800, Philip Chen wrote:
> The top-row keys in a keyboard usually have dual functionalities.
> E.g. A function key "F1" is also an action key "Browser back".
> 
> Therefore, when an application receives an action key code from
> a top-row key press, the application needs to know how to correlate
> the action key code with the function key code and do the conversion
> whenever necessary.
> 
> Since the userpace already knows the key scanlines (row/column)
> associated with a received key code. Essentially, the userspace only
> needs a mapping between the key row/column and the matching physical
> location in the top row.
> 
> So, enhance the cros-ec-keyb driver to create such a mapping
> and expose it to userspace in the form of a function_row_physmap
> attribute. The attribute would be a space separated ordered list of
> row/column codes for the keys in the function row, in a left-to-right
> order.
> 
> The attribute will only be present when the device has a custom design
> for the top-row keys.
> 
> Signed-off-by: Philip Chen <philipchen@chromium.org>

Applied, thank you.

-- 
Dmitry