linux-kernel - RE: [PATCH 7/7] leds-lm3530: enhanced arithmetic operation

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Date:	Fri, 20 Jan 2012 09:30:36 -0800
From:	"Kim, Milo" <Milo.Kim@...com>
To:	"Lars-Peter Clausen" <lars@...afoo.de>
cc:	"Linus Walleij" <linus.walleij@...aro.org>,
	"shreshthakumar.sahu@...ricsson.com" 
	<shreshthakumar.sahu@...ricsson.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"rpurdie@...ys.net" <rpurdie@...ys.net>
Subject: RE: [PATCH 7/7] leds-lm3530: enhanced arithmetic operation

>> The reason why dividing by two is only 7-bits of brightness value in the LM3530 register.
>> 
>> Bit7 | bit6 | bit5 | bit4 | bit3 | bit2 | bit1 | bit0
>> ------------------------------------------------------
>>  N/A |        LED Brightness Data (Bits[6:0])
>> ------------------------------------------------------
>> 
>> So maximum value is limited to 127.

> So the max_brightness property of your led should be set to 127.

That's good point. Thanks a lot !
Additional patch needs for this.

Best Regards,
Milo -

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