linux-kernel - Re: [PATCH 2/2] input: Add LED support to Synaptics device

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Message-ID: <20100415191217.GA1495@ucw.cz>
Date:	Thu, 15 Apr 2010 21:12:18 +0200
From:	Pavel Machek <pavel@....cz>
To:	Takashi Iwai <tiwai@...e.de>
Cc:	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] input: Add LED support to Synaptics device

Hi!

> The new Synaptics devices have an LED on the top-left corner.
> This is controlled via the command 0x0a with parameters 0x88 or 0x10.
> 
> The detection of the LED isn't clear yet.  It should have been the new
> capability bits that indicate the presence, but on real machines, it
> doesn't fit.  So, for the time being, the driver checks the product id
> in the ext capability bits and assumes that LED exists on the known
> devices.
> 
> The support of LED is controlled via a normal input event with EV_LED
> bit mask.  It supports LED_MUTE bit.  X driver can detect the LED
> support by checking these bits.

Could we use generic LED API for this? It is not really 'mute' led
after all...
								Pavel

-- 
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