#2319 BLOC Trial-3: Horrible noise in TamTam upon resume

[Zarro Boogs per Child]

#2319: Horrible noise  in TamTam upon resume
----------------------+-----------------------------------------------------
  Reporter:  ethrop   |       Owner:  dilinger
      Type:  defect   |      Status:  new     
  Priority:  blocker  |   Milestone:  Trial-3 
 Component:  kernel   |     Version:          
Resolution:           |    Keywords:          
  Verified:  0        |  
----------------------+-----------------------------------------------------
Comment (by wmb at firmworks.com):

 Here's what I think needs to happen:

 In the suspend path, save the state of the Bus Master N Command registers
 (see page 253 in the CS5536 manual), write 00 to disable bus mastering,
 then save the PRD Table registers (p 255) and DMA pointer registers (p
 256).

 In the resume path, restore those registers.

-- 
Ticket URL: <http://dev.laptop.org/ticket/2319#comment:9>
One Laptop Per Child <http://laptop.org/>