From: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Date: Fri, 11 Sep 2009 17:38:14 +0000 (-0700)
Subject: iwlwifi: Adjust blink rate to compensate Clock difference
X-Git-Tag: v2.6.33-rc1~388^2~865^2~83
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2d0d0e2bab7a325071dbaba3bef51c90868e1e6;p=pandora-kernel.git

iwlwifi: Adjust blink rate to compensate Clock difference

Adjust led blink rate to compensate on a MAC Clock difference on every
HW. Led blink rate analysis showed an average deviation of 0% on 3945,
5% on 4965 HW and 20% on 5000 series and up.
Need to compensate on the led on/off time per HW according to the
deviation to achieve the desired led frequency
The calculation is: (100-averageDeviation)/100 * blinkTime
For code efficiency the calculation will be:
    compensation = (100 - averageDeviation) * 64 / 100
    NewBlinkTime = (compensation * BlinkTime) / 64

Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com>
Signed-off-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
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