linux-kernel - Re: [PATCH v4 05/10] Input: wacom_i2c - Add support for distance and tilt x/y

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Message-ID: <YGImp7Fc/hjG4PFV@google.com>
Date:   Mon, 29 Mar 2021 12:12:39 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Alistair Francis <alistair@...stair23.me>
Cc:     linux-input@...r.kernel.org, linux-imx@....com,
        kernel@...gutronix.de, linux-kernel@...r.kernel.org,
        alistair23@...il.com
Subject: Re: [PATCH v4 05/10] Input: wacom_i2c - Add support for distance and
 tilt x/y

On Thu, Mar 25, 2021 at 09:52:25PM -0400, Alistair Francis wrote:
> This is based on the out of tree rM2 driver.
> 
> Signed-off-by: Alistair Francis <alistair@...stair23.me>
> ---
>  drivers/input/touchscreen/wacom_i2c.c | 25 +++++++++++++++++++++++--
>  1 file changed, 23 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/input/touchscreen/wacom_i2c.c b/drivers/input/touchscreen/wacom_i2c.c
> index ee1829dd35f4..3b4bc514dc3f 100644
> --- a/drivers/input/touchscreen/wacom_i2c.c
> +++ b/drivers/input/touchscreen/wacom_i2c.c
> @@ -22,12 +22,16 @@
>  #define WACOM_CMD_QUERY3	0x02
>  #define WACOM_CMD_THROW0	0x05
>  #define WACOM_CMD_THROW1	0x00
> -#define WACOM_QUERY_SIZE	19
> +#define WACOM_QUERY_SIZE	22
>  
>  struct wacom_features {
>  	int x_max;
>  	int y_max;
>  	int pressure_max;
> +	int distance_max;
> +	int distance_physical_max;
> +	int tilt_x_max;
> +	int tilt_y_max;
>  	char fw_version;
>  };
>  
> @@ -79,6 +83,10 @@ static int wacom_query_device(struct i2c_client *client,
>  	features->y_max = get_unaligned_le16(&data[5]);
>  	features->pressure_max = get_unaligned_le16(&data[11]);
>  	features->fw_version = get_unaligned_le16(&data[13]);
> +	features->distance_max = data[15];
> +	features->distance_physical_max = data[16];
> +	features->tilt_x_max = get_unaligned_le16(&data[17]);
> +	features->tilt_y_max = get_unaligned_le16(&data[19]);

Do other models also support distance and tilt? If not, this needs to be
made conditional.

Thanks.


-- 
Dmitry