#12090 NORM 13.1.0: XO-4 camera not working in Linux

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#12090: XO-4 camera not working in Linux
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           Reporter:  dsd       |       Owner:  dsd          
               Type:  defect    |      Status:  new          
           Priority:  normal    |   Milestone:  13.1.0       
          Component:  kernel    |     Version:  not specified
         Resolution:            |    Keywords:               
        Next_action:  diagnose  |    Verified:  0            
Deployment_affected:            |   Blockedby:               
           Blocking:            |  
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Comment(by dsd):

 To map/dump CCIC registers in sdkit:

 {{{
 d420a000 800 mmap constant mmpcam-reg
 mmpcam-reg 2c + l@ .
 mmpcam-reg 30 + l@ .
 }}}

 Shows that IRQ mask = 0x3f (expected, confirmed that the driver set this
 value) and IRQ stat = 0x3f (i.e. interrupts pending).

 For irq42 routing:

 {{{
 d4282000 1000 mmap irq-reg
 irq-reg a8 + l@ .
 irq-reg 1cc + l@ .
 irq-reg 13c + l@ .
 }}}

 Routing reg (a8) returns 0x20  - so the expected bit is set

 IRQ42 Status reg (1cc) returns 0

 IRQ1 status reg (13c) returns 0

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Ticket URL: <http://dev.laptop.org/ticket/12090#comment:1>
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