[PATCH] fix-lid302dl-bitbang-all-the-way-baby.patch

Andy Green andy at openmoko.com
Wed Aug 27 09:16:49 CEST 2008

Hash: SHA1

Somebody in the thread at some point said:
| Somebody in the thread at some point said:
| | Somebody in the thread at some point said:
| |
| | | I merged this into the stable 2.6.26 git and it breaks battery
again :(
| | |
| | | It also didn't solve my lockup. It took a little longer, but first
| | | input3 stopped then input2 just as before.
| | |
| | | There is something odd with the gpio stuff as battery was broken first
| | | by some old cfgpin calls in the led driver. Perhaps all gpio accesses
| | | should be made atomic if they are not already.
| |
| | You are right about that, it is read-modify-write action.  But I can't
| | see how it trashes HDQ or somehow HDQ pin cfg stuff could trash motion
| | sensor poll.
| It is very suspicious that the ersatz chip selects for the motion
| sensors are on D12 and D13, and HDQ pin is on D14...

When battery gets broken, what does that look like?  What's the first
indication of trouble?

I noticed problems with it on 2.6.27 (only) and changed the timer we use
for FIQ, that seemed to solve it.  The HDQ traffic was wrong duration, I
guessed it was something to do with tickless stuff changing the shared
prescaler on timer 3 and 4 that we use for FIQ.

- -Andy
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