Let's calibrate Yuga's Sharp Panel topic

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What is this?

This is an insight for developers on how to calibrate the Sharp Display.

Lets's start:

This is how the Gamma setting look like in our Panel Driver for each color:


Code:


static char gamma_setting_r[] = {
      0xC7, 0x07, 0x08, 0x0B, 0x12, 0x22, 0x3D, 0x30,
      0x42, 0x4F, 0x5D, 0x6C, 0x75, 0x0F, 0x14, 0x18,
      0x12, 0x22, 0x3E, 0x30, 0x47, 0x7F, 0x4F, 0x70,
      0x78
};



Now, i spend quite some time on how to figure what these hexadecimal value's actually mean.
The only method was to test these values manually, the Documentation itself did not help much.
After doing so most of the stuff became visible, so let me explain:

You see each column has a different colors. All values with the same color are responsible for the same setting:

Dark Blue Column: Controls the panel's grey's - lower values are recommended here
Medium Blue Column: Controls the Panel's Mids - can't say much on that for now
Light Blue Column: Controls the contrast / brightness - this one is not clearly noticable what of the both it actually controls
Lime Column: Controls the saturation
Green Column: Controls the blacks - higher values are recommended / same like withepoint
Yellow Column: Controls the whitepoint - higher values have more detail but look grayish, lower values look stunning but have less detail
Orange Column: Controls the contrast / brightness - again, not sure what, looks similar to the Light Blue Column
Red Column: Controls the saturation - no noticable difference to the Lime Column


Each hexadecimal value has a range from 0 (0x00) to 255 (0xFF), though i am not recommending to drop/rise any parameter to the maximum/minimum.
The above applies for every color gamut (r,g,b).


I encourage dev's to try this out for their Kernel's, so that we find good calibration's for our Screens.
The default calibration really sucks, this Panel can do much better than these washed out colors.

Some calibration examples are coming later as i am currently very busy with exam stuff and have not much time by now.

Thanks:
To
@langeveld024
for the Datasheet.




xda-developers


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