Re: [PATCH 2/2] Input: add touchscreen support for TS-4800

From	Dmitry Torokhov <dmitry.torokhov@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 2/2] Input: add touchscreen support for TS-4800
Date	2015-12-13 06:00 +0100
Message-ID	<qF6Vj-3FP-1@gated-at.bofh.it> (permalink)
References	<qEc6K-5i-9@gated-at.bofh.it> <qEc6L-5i-23@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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Hi Damien,

On Thu, Dec 10, 2015 at 11:11:12AM -0500, Damien Riegel wrote:
> On this board, the touchscreen, an ads7843, is not handled directly by
> Linux but by a companion FPGA. This FPGA is memory-mapped and the IP
> design is very similar to the mk712.

...

> +
> +	poll_dev = devm_input_allocate_polled_device(&pdev->dev);
> +	if (!poll_dev)
> +		return -ENOMEM;

I wonder how useful touchscreen implemented as polling device is. Isn't
there an interrupt line for it?

Thanks.

-- 
Dmitry
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Re: [PATCH 2/2] Input: add touchscreen support for TS-4800 Dmitry Torokhov <dmitry.torokhov@gmail.com> - 2015-12-13 06:00 +0100
  Re: [PATCH 2/2] Input: add touchscreen support for TS-4800 Damien Riegel <damien.riegel@savoirfairelinux.com> - 2015-12-13 22:00 +0100

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