linux-kernel - Re: [PATCH 3/3] leds-clevo-mail: driver for Clevo mail LED

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Message-ID: <472470DC.3080809@freemail.hu>
Date:	Sun, 28 Oct 2007 12:22:04 +0100
From:	Németh Márton <nm127@...email.hu>
To:	Richard Purdie <rpurdie@...ys.net>
CC:	Randy Dunlap <randy.dunlap@...cle.com>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	linux-kernel@...r.kernel.org, Rodrigo Pereira <rodripe@...il.com>
Subject: Re: [PATCH 3/3] leds-clevo-mail: driver for Clevo mail LED

Richard Purdie wrote:
> On Sun, 2007-10-21 at 14:55 +0200, Németh Márton wrote:
>> diff -uprN linux-2.6.23.orig/drivers/leds/Kconfig linux-2.6.23/drivers/leds/Kconfig
>> --- linux-2.6.23.orig/drivers/leds/Kconfig	2007-10-09 22:31:38.000000000 +0200
>> +++ linux-2.6.23/drivers/leds/Kconfig	2007-10-21 12:04:50.000000000 +0200
>> @@ -101,6 +101,39 @@ config LEDS_GPIO
>>  	  outputs. To be useful the particular board must have LEDs
>>  	  and they must be connected to the GPIO lines.
>>
>> +config LEDS_CLEVO_MAIL
>> +	tristate "Mail LED on Clevo notebook (EXPERIMENTAL)"
>> +	depends on LEDS_CLASS && X86 && SERIO_I8042 && DMI && EXPERIMENTAL
>> +	help
>> +	  This driver makes the mail LED accessible from userspace
>> +	  programs through the leds subsystem. This LED have three
>> +	  known mode: off, blink at 0.5Hz and blink at 1Hz.
>> +
>> +	  The driver supports two kinds of interface: using ledtrig-timer
>> +	  or through /sys/class/leds/clevo::mail/brightness. As this LED
>> +	  cannot change it's brightness it blinks instead. The brightness
>> +	  value 0 means off, 1..127 means blink at 0.5Hz and 128..255 means
>> +	  blink at 1Hz.
> 
> Hmm, there really is no way to just turn the LED on? :(

I looked up the printed manual (which can be also found at
ftp://ftp.clevo.com.tw/USRMANUAL/D4x0J/D4x0J_CUG.zip ), page 9 contains
the following information:

LED Power & Communication Indicators:

Icon | Color            | Description
-----+------------------+-----------------------------------------------
Mail | Blinking Green & | New mail has arrived
LED  | Orange           |
     +------------------+-----------------------------------------------
     | Fast Blinking    | New mail has arrived from users defined
     | Green & Orange   | in the Special Group in the Auto Mail Checker
     +------------------+-----------------------------------------------
     | Green            | The (optional) Wireless LAN module is On
     +------------------+-----------------------------------------------
     | Orange           | The (optional) Bluetooth module is On
     +------------------+-----------------------------------------------
     | Half Orange/     | Both the (optional) Wireless LAN and Bluetooth
     | Half Green       | modules are On (see sidebar)
-----+------------------+-----------------------------------------------

Unfortunately I do not have these optional modules so I never saw the LED
just on without blinking. I don't know if there is any hardware limitation
turning on the LED without the optional modules.

I will send a new patch collection which addresses the other mentioned topics.

	Márton Németh
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