tickerguy/WX_435_Kernel-Tickerguy — comment on commit 51f0cf3bcc66fc9d3afd13063338d389959f7d85
File: drivers/media/video/msm/hm0357.c line 408
By tickerguy:

Unknown. I suspect yes, maybe, but if you get it wrong you're gonna
cry. The code itself looks like a shift-register sort of thing to load
values down, and there may be timing requirements that don't work so
well from userspace.

I'm treading lightly here as playing with anything on the GPIO bus has
the potential to blow things up if you accidentally hit the voltage
programming for the peripheral in question. It's unlikely, but.......

On 10/14/2011 8:27 AM, Isaac wrote:
> Is there any way (a safe way, I might add) to poke the sensor from userspace to try things out? Just like when you hit the LED flash somewhere in /sys/devices/i2c-4...
>
> It would be nice not to compile a kernel to try *every* change.
>