linux-kernel - Re: [PATCH v4 01/24] input: Add ff-memless-next module

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Date:	Wed, 14 May 2014 11:14:02 -0700
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Michal Malý <madcatxster@...oid-pointer.net>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	jkosina@...e.cz, elias.vds@...il.com, anssi.hannula@....fi,
	simon@...gewell.org
Subject: Re: [PATCH v4 01/24] input: Add ff-memless-next module

On Sat, Apr 26, 2014 at 05:02:00PM +0200, Michal Malý wrote:
> +
> +/** input_ff_create_mlnx() - Register a device within ff-memless-next and
> + *                           the kernel force feedback system
> + * @dev: Pointer to the struct input_dev associated with the device.
> + * @data: Any device-specific data that shall be passed to the callback.
> + *        function called by ff-memless-next when a force feedback action
> + *        shall be performed.
> + * @control_effect: Pointer to the callback function.
> + * @update_date: Delay in milliseconds between two recalculations of periodic
> + *               effects, ramp effects and envelopes. Note that this value will
> + *               never be lower than (CONFIG_HZ / 1000) + 1 regardless of the
> + *               value specified here. This is not a "hard" rate limiter.
> + *               Userspace still can submit effects at a rate faster than
> + *               this value.

The update rate change seems useful whether we use new ff implementation
or enhance the old one but I would prefer having a separate call to
control it.

Thanks.

-- 
Dmitry
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