linux-kernel - Re: [PATCH v4 1/1] Input: cros_ec_keyb

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Message-ID: <aV40ZQRNh11zAtFz@google.com>
Date: Wed, 7 Jan 2026 10:24:37 +0000
From: Fabio Baltieri <fabiobaltieri@...omium.org>
To: Simon Glass <sjg@...omium.org>
Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Benson Leung <bleung@...omium.org>,
	Guenter Roeck <groeck@...omium.org>,
	Tzung-Bi Shih <tzungbi@...nel.org>, linux-input@...r.kernel.org,
	chrome-platform@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/1] Input: cros_ec_keyb - add function key support

On Tue, Jan 06, 2026 at 09:22:06AM -0700, Simon Glass wrote:
> Hi Fabio,
> 
> On Tue, 6 Jan 2026 at 04:29, Fabio Baltieri <fabiobaltieri@...omium.org> wrote:
> >
> > Add support for handling an Fn button and sending separate keycodes for
> > a subset of keys in the matrix defined in the upper half of the keymap.
> >
> > Signed-off-by: Fabio Baltieri <fabiobaltieri@...omium.org>
> > ---
> >  drivers/input/keyboard/cros_ec_keyb.c | 174 +++++++++++++++++++++++---
> >  1 file changed, 158 insertions(+), 16 deletions(-)
> >
> 
> Reviewed-by: Simon Glass <sjg@...omium.org>

Thanks again!

> 
> > diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
> > index 1c6b0461dc35..74ac1700b104 100644
> > --- a/drivers/input/keyboard/cros_ec_keyb.c
> > +++ b/drivers/input/keyboard/cros_ec_keyb.c
> > @@ -29,6 +29,11 @@
> >
> >  #include <linux/unaligned.h>
> >
> > +/* Maximum size of the normal key matrix, this is limited by the host command
> > + * key_matrix field defined in ec_response_get_next_data_v3
> > + */
> > +#define CROS_EC_KEYBOARD_COLS_MAX 18
> > +
> >  /**
> >   * struct cros_ec_keyb - Structure representing EC keyboard device
> >   *
> > @@ -44,6 +49,11 @@
> >   * @bs_idev: The input device for non-matrix buttons and switches (or NULL).
> >   * @notifier: interrupt event notifier for transport devices
> >   * @vdata: vivaldi function row data
> > + * @has_fn_map: whether the driver use an fn function map layer
> 
> How about: driver uses an fn function-map layer

Yeah sounds good, will send a v5 with that comment tweaked.