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References: <1406566403-1436-1-git-send-email-dmurphy@ti.com>
    <20140728174334.GD8982@core.coreip.homeip.net>
Date: Mon, 28 Jul 2014 13:59:34 -0400
Subject: Re: [v2] input: drv260x: Add TI drv260x haptics driver
From: simon@mungewell.org
To: "Dan Murphy" <dmurphy@ti.com>
Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org,
        devicetree@vger.kernel.org,
        =?iso-8859-1?Q?=22Michal_Mal=FD=22?= 
	<madcatxster@devoid-pointer.net>,
        "Elias Vanderstuyft" <elias.vds@gmail.com>
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>> The initial driver supports the devices
>> real time playback mode.  But the device
>> has additional wave patterns in ROM.
>
> As it presented the device appears to be a memoryless device, however
> you present it to the rest of the system as if it can support playback
> of multiple effects simultaneously, which is incorrect.
>
> My guess that you need to engage the memoryless input library to schedule
> handling multiple effects for your device, including ramping up, ramping
> down, stopping playback when effects runs out, etc.

Hi Dan,
Elias and Michal (cc'ed) are working on a kernel/userland library to
handle sending multiple force feedback signals to 'simple' devices,
perhaps you should engage with them.

Simon

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