[cpia] CPiA colour balance problem [patch]

[rich@annexia.org]

It turns out that the second part of the problem (I accused
a bug in the firmware, if you recall) may well not actually
be a problem with the camera :-)

I looked closely at what was being returned from the GetExposure
call, and the values being returned appear to be completely
bogus.

For example:

$ grep '_comp' /proc/cpia/video0 
red_comp:                      0       220       255       220
green1_comp:                   0       214       255       214
green2_comp:                 192       214       255       214
blue_comp:                   128       230       255       230

and also with debugging turned on in the kernel:

Mar  5 14:59:17 arctor kernel: usb.c: cpia driver claimed interface d3f6f440 
Mar  5 15:00:25 arctor kernel: cpia.c(49441230):goto_low_power(2315):camera now in LOW power state 
Mar  5 15:00:25 arctor kernel: cpia.c(49441239):goto_high_power(2301):camera now in HIGH power state 
Mar  5 15:00:26 arctor kernel: cpia.c(49441252):dispatch_commands(2032):1 1 0 0 1 1 1 1  
Mar  5 15:00:26 arctor kernel: cpia.c(49441252):dispatch_commands(2033):0 1 1 1 1 1 0 1  
Mar  5 15:00:26 arctor kernel: cpia.c(49441257):save_camera_state(2335):1/0/0/1/0/0/192/128

Note that the values printed out for red_comp, green?_comp and
blue_comp in save_camera_state are wrong.

Any ideas? These seem to be read straight from the camera.

Rich.

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