I am trying to access and update the display LUT on a Qualcomm chipset based device (Nexus 5X) and need some help on that.
I have figured out that the MSM frame buffer driver at the link below has the support for doing this: https://android.googlesource.com/kernel/msm/+/android-msm-bullhead-3.10-marshmallow-dr/drivers/video/msm/ (the case MSMFB_SET_LUT, in the msm_fb_ioctl function is doing this). However I am not sure what is the right interface to connect to the MSM_FB driver. Should I be able to open /dev/graphics/fb0 and do an ioctl call on it to access this functionality? (I apologize my knowledge of linux / android devcie drivers is pretty rudimentary). Also my final code gets integrated into Android SurfaceFlinger. I am assuming SurfaceFlinger would have a direct interface to the frame buffer driver and probably doesn't need to open /dev/graphics/fb0 to access the driver. However I don't know what is the interface from SurfaceFlinger to FB driver. Would be great to get some input on this! I should clarify that I am running an AOSP build of Android (6.0) on a rooted Nexus 5X. -- -- unsubscribe: android-porting+unsubscr...@googlegroups.com website: http://groups.google.com/group/android-porting --- You received this message because you are subscribed to the Google Groups "android-porting" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-porting+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
