linux-kernel - Re: [PATCH v4 04/10] Input: wacom_i2c

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Message-ID: <YGIlsLgvE9y/jiGk@google.com>
Date:   Mon, 29 Mar 2021 12:08:32 -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 04/10] Input: wacom_i2c - Add touchscren properties

On Thu, Mar 25, 2021 at 09:52:24PM -0400, Alistair Francis wrote:
> Connect touchscreen properties to the wacom_i2c.
> 
> Signed-off-by: Alistair Francis <alistair@...stair23.me>
> ---
> v4:
>  - Add touchscreen_report_pos() as well
> 
>  drivers/input/touchscreen/wacom_i2c.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/input/touchscreen/wacom_i2c.c b/drivers/input/touchscreen/wacom_i2c.c
> index eada68770671..ee1829dd35f4 100644
> --- a/drivers/input/touchscreen/wacom_i2c.c
> +++ b/drivers/input/touchscreen/wacom_i2c.c
> @@ -11,6 +11,7 @@
>  #include <linux/i2c.h>
>  #include <linux/slab.h>
>  #include <linux/irq.h>
> +#include <linux/input/touchscreen.h>
>  #include <linux/interrupt.h>
>  #include <linux/of.h>
>  #include <asm/unaligned.h>
> @@ -33,6 +34,7 @@ struct wacom_features {
>  struct wacom_i2c {
>  	struct i2c_client *client;
>  	struct input_dev *input;
> +	struct touchscreen_properties props;
>  	u8 data[WACOM_QUERY_SIZE];
>  	bool prox;
>  	int tool;
> @@ -188,6 +190,9 @@ static int wacom_i2c_probe(struct i2c_client *client,
>  	__set_bit(BTN_STYLUS2, input->keybit);
>  	__set_bit(BTN_TOUCH, input->keybit);
>  
> +	touchscreen_parse_properties(input, true, &wac_i2c->props);
> +	touchscreen_report_pos(input, &wac_i2c->props, features.x_max,
> +			       features.y_max, true);

??? This goes into wacom_i2c_irq() where it previously used
input_report_abs() for X and Y so that transformations (swap, mirrot)
requested via device properties are applied to the coordinates.

Thanks.

-- 
Dmitry