linux-kernel - Re: [PATCH] Input: synaptics - properly initialize slots for semi-MT

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Message-ID: <53D3CE2E.3040103@bitmath.org>
Date:	Sat, 26 Jul 2014 17:50:06 +0200
From:	Henrik Rydberg <rydberg@...math.org>
To:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...r.kernel.org
CC:	Hans de Goede <hdegoede@...hat.com>,
	Benjamin Tissoires <benjamin.tissoires@...hat.com>,
	Benson Leung <bleung@...omium.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Input: synaptics - properly initialize slots for semi-MT

Hi Dmitry,

On 07/26/2014 02:27 AM, Dmitry Torokhov wrote:
> Semi-MT devices are pointers too, so let's tell that to
> input_mt_init_slots(), as well as let it set up the devices as semi-MT,
> instead of us doing it manually.
> 
> Reviewed-by: Daniel Kurtz <djkurtz@...omium.org>
> Reviewed-by: Benson Leung <bleung@...omium.org>
> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com>
> ---
>  drivers/input/mouse/synaptics.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
> index ef9e0b8..fe607e9 100644
> --- a/drivers/input/mouse/synaptics.c
> +++ b/drivers/input/mouse/synaptics.c
> @@ -1371,11 +1371,11 @@ static void set_input_params(struct psmouse *psmouse,
>  		__set_bit(BTN_TOOL_QUADTAP, dev->keybit);
>  		__set_bit(BTN_TOOL_QUINTTAP, dev->keybit);
>  	} else if (SYN_CAP_ADV_GESTURE(priv->ext_cap_0c)) {
> -		/* Non-image sensors with AGM use semi-mt */
> -		__set_bit(INPUT_PROP_SEMI_MT, dev->propbit);
> -		input_mt_init_slots(dev, 2, 0);
>  		set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
>  					ABS_MT_POSITION_Y);
> +		/* Non-image sensors with AGM use semi-mt */
> +		input_mt_init_slots(dev, 2,
> +				    INPUT_MT_POINTER | INPUT_MT_SEMI_MT);
>  	}

As long as DOUBLE_TAP is set unconditionally in this path anyways, it should be
ok. I have a vague memory of refraining from this exact change at some point,
because of the many branches of settings.

>  
>  	if (SYN_CAP_PALMDETECT(priv->capabilities))
> 

Henrik

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