[udfps] Is udfps will get functional supported on sm8250 devices ? about kernel_xiaomi_sm8250 HOT 2 CLOSED

Same happens with umi, this doesn't happen with this kernel

from kernel_xiaomi_sm8250.

Same happens with umi, this doesn't happen with this kernel

Summary

It keeps high level of brightness without recovering the brightness level after pressing udfps area. By the way, this kernel do not drive udfps sensor light through setting DISPPARAM_HBM_ON mode to it's path DISPPARAM_PATH currently.

I wonder this commit GrettoRosella/android_kernel_xiaomi_sm8250@ce143e9 maybe give some help.

Details

So I re-write dsi_panel_set_fod_hbm() which will be used in sde_connector.c with another function that contains dsi_panel_set_fod_hbm(). I think I could use dsi_panel_get_brightness() before setting DISPPARAM HBM mode while recovering by dsi_panel_set_backlight() after HBM mode off.

void sde_connector_update_fod_hbm(struct drm_connector *connector)
{
........
dsi_panel_set_fod_hbm(display->panel, status);
......
}

But I'm not so good at c language nor a kernel pro so I failed. Now the problem still happens. Anyone could offer some ideas for the kernel development

from kernel_xiaomi_sm8250.