linux-kernel - Re: [PATCH] cros_ec_keyb: Add 3 buttons for monitor function

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Message-ID: <Y5uZNVzEgsKzlPD0@google.com>
Date:   Thu, 15 Dec 2022 14:01:25 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Joe Wu <joewu@....corp-partner.google.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Stephen Boyd <swboyd@...omium.org>,
        Xiang wangx <wangxiang@...rlc.com>,
        linux-input@...r.kernel.org, Derek Huang <derekhuang@...gle.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Benson Leung <bleung@...omium.org>,
        Daisuke Nojiri <dnojiri@...omium.org>,
        Prashant Malani <pmalani@...omium.org>,
        Furquan Shaikh <furquan@...omium.org>,
        Tzung-Bi Shih <tzungbi@...nel.org>,
        chrome-platform@...ts.linux.dev,
        Douglas Anderson <dianders@...omium.org>,
        "Dustin L . Howett" <dustin@...ett.net>,
        Guenter Roeck <groeck@...omium.org>,
        "Gustavo A . R . Silva" <gustavoars@...nel.org>,
        Sebastian Reichel <sebastian.reichel@...labora.com>
Subject: Re: [PATCH] cros_ec_keyb: Add 3 buttons for monitor function

Hi Joe,

On Thu, Dec 15, 2022 at 02:15:50PM +0800, Joe Wu wrote:
> This patch is to add extra 3 buttons: 'brightness up',
> 'brightness down' and 'leave PC(cros) mode' to support
> monitor navigation function.

I understand "brightness up" and "brightness down" but I have no idea
what "leave PC(cros) mode" means. I also do not think we should be
abusing F13 for this.

Thanks.

> 
> Signed-off-by: Joe Wu <joewu@....corp-partner.google.com>
> 
> ---
> 
>  drivers/input/keyboard/cros_ec_keyb.c          | 15 +++++++++++++++
>  include/linux/platform_data/cros_ec_commands.h |  3 +++
>  2 files changed, 18 insertions(+)
> 
> diff --git a/drivers/input/keyboard/cros_ec_keyb.c b/drivers/input/keyboard/cros_ec_keyb.c
> index c14136b733a9..bf1cf0b782d2 100644
> --- a/drivers/input/keyboard/cros_ec_keyb.c
> +++ b/drivers/input/keyboard/cros_ec_keyb.c
> @@ -100,6 +100,21 @@ static const struct cros_ec_bs_map cros_ec_keyb_bs[] = {
>  		.code		= KEY_VOLUMEDOWN,
>  		.bit		= EC_MKBP_VOL_DOWN,
>  	},
> +	{
> +		.ev_type        = EV_KEY,
> +		.code           = KEY_BRIGHTNESSUP,
> +		.bit            = EC_MKBP_BRI_UP,
> +	},
> +	{
> +		.ev_type        = EV_KEY,
> +		.code           = KEY_BRIGHTNESSDOWN,
> +		.bit            = EC_MKBP_BRI_DOWN,
> +	},
> +	{
> +		.ev_type        = EV_KEY,
> +		.code           = KEY_F13,
> +		.bit            = EC_MKBP_CROS_LEAVE,
> +	},
>  
>  	/* Switches */
>  	{
> diff --git a/include/linux/platform_data/cros_ec_commands.h b/include/linux/platform_data/cros_ec_commands.h
> index 5744a2d746aa..79218da8a8cb 100644
> --- a/include/linux/platform_data/cros_ec_commands.h
> +++ b/include/linux/platform_data/cros_ec_commands.h
> @@ -3471,6 +3471,9 @@ struct ec_response_get_next_event_v1 {
>  #define EC_MKBP_VOL_UP		1
>  #define EC_MKBP_VOL_DOWN	2
>  #define EC_MKBP_RECOVERY	3
> +#define EC_MKBP_BRI_UP          4
> +#define EC_MKBP_BRI_DOWN        5
> +#define EC_MKBP_CROS_LEAVE      6
>  
>  /* Switches */
>  #define EC_MKBP_LID_OPEN	0
> -- 
> 2.17.1
> 

-- 
Dmitry