Pull OLPC changes #48
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Lower the initial brightness from 15 to 10. This applies to the period between CForth start and Open Firmware opening the display device. Rationale: New display backlight LEDs are to enter production for XO-4. These make display brighter; 169 cd/m², with DCON brightness register at maximum, at the Sugar home view. We keep the perceived brightness the same as before (125 cd/m² same test conditions), but allow the user to raise the brightness above the previous maximum. We also lose some level of control in the range downwards. A manufacturing tag BL will identify units with new display backlight, but access to tags in CForth is (by design) very simple and not yet worth complicating. Intent - new firmware with new display will show constant brightness from turn on until Linux booted, consistent with the full brightness of the original design. Side effect - new firmware with old display will show brief (2s) low brightness followed by normal brightness once Open Firmware sees no BL tag. See #12854.
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This pull request is actually for pulling from:
git pull http://dev.laptop.org/git/users/quozl/cforth/ master
It includes a small amount of commits that were made to the laptop.org
tree, with the objective of synchronizing the trees back together.