Openmoko Bug #2185: AUX button makes interrupt storm

[Openmoko Public Trac]

#2185: AUX button makes interrupt storm
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 Reporter:  vnevoa   |          Owner:  openmoko-devel       
     Type:  defect   |         Status:  new                  
 Priority:  normal   |      Milestone:                       
Component:  unknown  |        Version:  Om2008.9-dev         
 Severity:  normal   |       Keywords:  AUX button interrupts
 Haspatch:  0        |      Blockedby:                       
Estimated:           |    Patchreview:                       
 Blocking:           |   Reproducible:  always               
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Comment(by arhuaco):

 Replying to [comment:10 vnevoa]:
 > Oops, sorry, I only looked at the /proc/interrupts output.

 Yes, you will still get the IRQ storm there... the idea is to filter it.

 > Now I'm looking at the kernel messages.
 >
 > When I press the AUX button, I get only 1 message:
 >  "IRQ press:0"
 > When I release the button, I get 2 messages:
 >  "IRQ press:0"
 >  "IRQ press:1"

 Ok. This device is asking for a state. I will program something better
 now... I think it is not hard to solve this.

 In the mean time it will help us a lot if you test another image. It will
 print
 every IRQ. I didn't make 2 images but one image and 2 modules. You will
 get a warning
 when you remove the modules, I haven't researched that issue yet (it is
 not fatal but it needs to be fixed).

 You will need to disable suspend in your distro (using the GUI I guess).
 This time we want to know the timings of the interrupts in order to tune
 the filter. I'm sending 2 modules. One of them has the pulldown, let's see
 if it makes a noticeable difference for you.

 The idea is that for each module, you try this:

 1) insert module.
 2) press and release the button fast
 3) wait about 1 second

 please repeat 2 and 3 about 10 times.

 4) remove the module
 5) Do a "dmesg > module1" or  "dmesg > module2"....

 Then send us the dumps...

 Please download from: http://wiki.emqbit.com/tmp/test2.tar
 MD5SUMS:
 840672c60dbd29cb98b58653aac75d6f  module1.ko
 224406385ed557181a6da4bfca152a49  module2.ko
 0d4bec316e8c70d6bb9f561239ea0fcc  uImage-moredrivers-GTA02_andy-
 tracking_1c16df7be9a83288.bin


 > Now I see the Power button also behaves strangely, I think.
 > I press Power, and I get 3 kernel messages:
 >  "INT1=0x80 INT2=0x02 INT3=0x00 INT4=0x00 INT5=0x00"
 >  "INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00"
 >  "INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00"
 > I release it, and I get another 3:
 >  "INT1=0x00 INT2=0x01 INT3=0x00 INT4=0x00 INT5=0x00"
 >  "INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00"
 >  "INT1=0x80 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00"
 > Is this supposed to happen?

 I do not know... I will focus on the problem of the ticket first...

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/2185#comment:11>
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