Config.in

config BR2_PACKAGE_KC110_MIPI_SHIM
	bool "kc110-mipi-shim"
	depends on BR2_arm
	help
	  LD_PRELOAD shim (libfixmipi.so) that patches majestic's MIPI ioctl
	  calls in-flight on hi3518ev200/V2A boards with OV2735 sensor.

	  Upstream majestic builds combo_dev_attr_t with raw_data_type=0 and
	  VIU dev_attr with enIntfMode=DC, both rejected by the hi_mipi kernel
	  module for MIPI sensors. Without this shim, majestic fails with
	  "ioctl HI_MIPI_SET_DEV_ATTR failed" → "Cannot init sensor" → no
	  pipeline. Confirmed broken on opensdk e22d315 and b958db4 (May 2026).

	  The shim intercepts:
	    HI_MIPI_SET_DEV_ATTR (0x41306d01) → patch raw_data_type=2 (RAW10),
	      lane_id=[0,1,-1,-1,-1,-1,-1,-1]
	    VIU_DEV_ATTR_SET (variable ioctl)  → patch enIntfMode=VI_MODE_MIPI=5,
	      au32CompMask[0]=0xfff00000

	  Activation requires `LD_PRELOAD=/usr/lib/libfixmipi.so` exported in
	  /etc/init.d/S95majestic — see firmware-overlay/etc/init.d/S95majestic
	  for the export line. Both files must be present.

	  Long-term fix is an upstream majestic PR that builds combo_dev_attr_t
	  correctly for MIPI sensors. Remove this package and the LD_PRELOAD
	  export when that lands.

	  Reference: OVERLAY_INVENTORY.md category D, verified necessary
	  2026-05-27 by removing both files and confirming majestic fails.