libcamera-mchp: Add libcamera IPA support

Add config and related options to include microchip-isc Image Processing
Algorithm(IPA) module as sub-package in the build. Fix meson option
syntax by removing a trailing backslash.

Signed-off-by: Balakrishnan Sambath <[email protected]>
Signed-off-by: Conor Dooley <[email protected]>

Author: Balki01

package/libcamera-mchp/Config.in

@@ -22,6 +22,14 @@ menuconfig BR2_PACKAGE_LIBCAMERA_MCHP
       Microchip's custom libcamera framework.
 
       https://github.com/linux4microchip/libcamera-mchp.git
+if BR2_PACKAGE_LIBCAMERA_MCHP
+config BR2_PACKAGE_LIBCAMERA_MCHP_IPA
+    bool "libcamera-mchp IPA module"
+    default y
+    help
+      Enable support for Microchip Image Sensor Controller (ISC)
+      Image Processing Algorithm module.
+endif
 
 comment "libcamera-mchp needs a toolchain w/ C++, threads, wchar, dynamic library, gcc >= 8"
     depends on BR2_PACKAGE_LIBCAMERA_MCHP_ARCH_SUPPORTS

package/libcamera-mchp/libcamera-mchp.mk

@@ -37,11 +37,12 @@ LIBCAMERA_MCHP_CONF_OPTS = \
 	-Dv4l2=true \
 	-Dcam=enabled \
 	-Dudev=enabled \
+	-Dipas=microchip-isc \
 	-Dlc-compliance=disabled \
 	-Dtest=false \
 	-Ddocumentation=disabled \
 	-Dgstreamer=disabled \
-	-Dpycamera=disabled \
+	-Dpycamera=disabled
 
 # Open-Source IPA shlibs need to be signed in order to be runnable within the
 # same process, otherwise they are deemed Closed-Source and run in another
@@ -66,8 +67,19 @@ define LIBCAMERA_MCHP_INSTALL_SIGN_IPA
 	./ipa-sign-install.sh $(@D)/build/src/ipa-priv-key.pem ipa_*.so
 endef
 
+# Install the IPA module
+define LIBCAMERA_MCHP_INSTALL_IPA_MODULE
+       if [ -f $(@D)/build/src/ipa/microchip-isc/ipa_microchip_isc.so ]; then \
+               $(INSTALL) -D -m 0755 $(@D)/build/src/ipa/microchip-isc/ipa_microchip_isc.so \
+                       $(TARGET_DIR)/usr/lib/libcamera/ipa_microchip_isc.so ; \
+       fi
+endef
+
 LIBCAMERA_MCHP_POST_BUILD_HOOKS += LIBCAMERA_MCHP_BUILD_STRIP_IPA_SO
 LIBCAMERA_MCHP_PRE_INSTALL_TARGET_HOOKS += LIBCAMERA_MCHP_CREATE_DIRS
+ifeq ($(BR2_PACKAGE_LIBCAMERA_MCHP_IPA),y)
+LIBCAMERA_MCHP_POST_INSTALL_TARGET_HOOKS += LIBCAMERA_MCHP_INSTALL_IPA_MODULE
+endif
 LIBCAMERA_MCHP_POST_INSTALL_TARGET_HOOKS += LIBCAMERA_MCHP_INSTALL_SIGN_IPA
 
 $(eval $(meson-package))