MIPI 10" screen with Android

[tsadigov]

Is there a way of doing this on Android?
Rock5/accessories/radxa-display-10hd - Radxa Wiki

[tsadigov]

I explain how I did this for armbian here

MIPI Display Support

Sure @le51. May be there is simpler way of doing that, if yes I would like to know. I am also thinking about releasing prebuilt image with these changes. Here is what I did and the reasoning behind it. kernel should have needed drivers/modules to run the hardware. I am building armbian image using their builder. There I enable few modules. CONFIG_DRM_PANEL_RADXA_DISPLAY_8HD=y CONFIG_DRM_PANEL_JADARD_JD9365DA_H3=y Why these modules? These where enabled in debian/ubuntu from Radxa where di…

In order to have the Android kernel that includes required modules I used suggestion from @thc013

Built Android, How do I flash

just do a ./build.sh -UCKAupJ( x cores) and it builds a update.img and a gpt img to make a spi nvme image you need some additional files in rktools . here a custom manifest for the rkr12 sdk just replace the line repo init -u https://github.com/radxa/manifests.git -b Android12_RK3588_Radxa_rk8 -m rockchip-s-release.xml with repo init -u https://github.com/Shaggy013/manifests.git -b Raxda_12.1 -m default.xml and just follow rest of the guide https://wiki.radxa.com/Rock5/guide/android12

when doing both I get working display, but orientation is wrong

[thc013]

gonna build tablet anyway
i will include a img with lcd’s, i default not add them

[tsadigov]

[tsadigov]

The screen visual orientation is fixed now but touch input orientation still wrong,

[tsadigov]

things to try
adb shell settings put system user_rotation 0/1/2/3
ro.sf.hwrotation
Launcher.java
setRequestedOrientation(

•                ActivityInfo.SCREEN_ORIENTATION_NOSENSOR);
  

• ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

[thc013]

there are multiple dtsi files for your screen

your issue is more dts settings then android settings i think

[tsadigov]

Thanks, this message tells similar story. Will try to adjust there.

Surfaceflinger rotates only the graphics. The touchscreen we have to
take care of ourselves.

https://review.lineageos.org/c/LineageOS/android_kernel_lenovo_msm8976/+/223833

[tsadigov]

Similar topic here
https://forum.radxa.com/t/android-11-multitouch-not-rotating

[tsadigov]

Progress so far
The dts specify 2 interesting entries

• GT9XX
• focaltech

I started with first one
this source https://android.googlesource.com/kernel/msm/+/android-7.1.0_r0.2/Documentation/devicetree/bindings/input/touchscreen/gt9xx/gt9xx.txtsuggests adding change-x2y

this source https://github.com/goodix/gt9xx_driver_android/blob/master/dtsi/gt9xx_dts.txt suggests adding swap-x2y

none of which worked, then I tried to find the code that uses these settings.
kernel/drivers/input/touchscreen/gt9xx/gt9xx.c
made clear that the mentioned settings do not work with the included driver version. But tp-size parameter value is mapped to swap-x2y, x-reverse, y-reverse values.

Unfortunately efforts on gt9xx did not bring any result.

cat /sys/input*/device/driver/*uevent

shows OF_FULLNAME=/i2c@fec80000/focaltech@38

So I continued with the second option, focaltech. Checking the source code I did not find any parameter to set in the dts. So I directly modified source.

[tsadigov]

Aaaand it worked

[cjcdev]

@tsadigov Can you share how you were able to change orientation and get touch to work? I have 8" panel, but I think I have similar issues.

[ND_Wooten]

I would love to get this image from you. I’m trying to get this working on the 8in display but I’m very new to android. I would love to have this working as a tablet.