Re: [PATCH 2/3] Input: synaptics - warn the users when there is a better mode

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On Tue, May 23, 2017 at 10:36:56AM +0200, Benjamin Tissoires wrote:
> The Synaptics touchpads are now either using i2c-hid or rmi-smbus.
> Warn the users if they are missing the rmi-smbus modules and have no
> chance of reporting correct data.
> 
> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@xxxxxxxxxx>
> ---
>  drivers/input/mouse/synaptics.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
> index 58ff388..fc42259 100644
> --- a/drivers/input/mouse/synaptics.c
> +++ b/drivers/input/mouse/synaptics.c
> @@ -1814,6 +1814,10 @@ int synaptics_init(struct psmouse *psmouse)
>  	}
>  
>  	if (SYN_CAP_INTERTOUCH(info.ext_cap_0c)) {
> +#if !IS_ENABLED(CONFIG_RMI4_SMB) || !defined(CONFIG_MOUSE_PS2_SYNAPTICS_SMBUS)
> +		psmouse_warn(psmouse, "The touchpad can support a better bus than the too old PS/2 protocol.\n"
> +			"Make sure MOUSE_PS2_SYNAPTICS_SMBUS and RMI4_SMB are enabled to get a better touchpad experience.\n");
> +#endif

I'll pull the checks into "if" to avoid preprocessor and also add checks
for forcepad PNP IDs as forcepads are not usable with RMI at the moment
since they need F21.

>  		error = synaptics_setup_intertouch(psmouse, &info, true);
>  		if (!error)
>  			return PSMOUSE_SYNAPTICS_SMBUS;
> -- 
> 2.9.4
> 

Thanks.

-- 
Dmitry
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