Compile hailo_pci module from original sources on RPi 5 (#3732)

Instead of using in-tree module on RPi 5, build it as a module from the
original sources. This will give us better control over the version used and
will also allow us for easier way to add the module to other platforms.

This also makes 017d172 unnecessary anymore.

buildroot-external/Config.in

@@ -3,6 +3,7 @@ source "$BR2_EXTERNAL_HASSOS_PATH/package/eq3_char_loop/Config.in"
 source "$BR2_EXTERNAL_HASSOS_PATH/package/gasket/Config.in"
 source "$BR2_EXTERNAL_HASSOS_PATH/package/generic_raw_uart/Config.in"
 source "$BR2_EXTERNAL_HASSOS_PATH/package/hailo8-firmware/Config.in"
+source "$BR2_EXTERNAL_HASSOS_PATH/package/hailo-pci/Config.in"
 source "$BR2_EXTERNAL_HASSOS_PATH/package/hardkernel-boot/Config.in"
 source "$BR2_EXTERNAL_HASSOS_PATH/package/hassio/Config.in"
 source "$BR2_EXTERNAL_HASSOS_PATH/package/khadas-boot/Config.in"

buildroot-external/board/raspberrypi/kernel.config

@@ -7,3 +7,6 @@ CONFIG_LOCALVERSION="-haos-raspi"
 CONFIG_LEDS_TRIGGERS=y
 CONFIG_LEDS_TRIGGER_DISK=y
 CONFIG_LEDS_TRIGGER_ACTIVITY=y
+
+# do not use RPi in-tree driver, use one from BR package instead
+# CONFIG_MEDIA_PCI_HAILO is not set

buildroot-external/configs/rpi5_64_defconfig

@@ -144,6 +144,7 @@ BR2_PACKAGE_HOST_MTOOLS=y
 BR2_PACKAGE_HOST_RAUC=y
 BR2_PACKAGE_GASKET=y
 BR2_PACKAGE_HAILO8_FIRMWARE=y
+BR2_PACKAGE_HAILO_PCI=y
 BR2_PACKAGE_HASSIO=y
 BR2_PACKAGE_HASSIO_ARCH="aarch64"
 BR2_PACKAGE_HASSIO_MACHINE="raspberrypi5-64"

buildroot-external/package/hailo-pci/Config.in

@@ -0,0 +1,7 @@
+config BR2_PACKAGE_HAILO_PCI
+	bool "Hailo PCIe Driver"
+	depends on BR2_LINUX_KERNEL
+	help
+	  Kernel driver for interacting with Hailo devices over PCIe.
+	  Used e.g. for Hailo-8(L) PCIe device found e.g. on Raspberry
+	  Pi AI Kit and Raspberry Pi AI HAT+.

buildroot-external/package/hailo-pci/hailo-pci.hash

@@ -0,0 +1,3 @@
+# Locally computed
+sha256  f9c375a1be4a41f7b70301dd83c91cb89e41567478859b77eef375a52d782505  LICENSE
+sha256  0c687d229968ba3092ee214ed45be8ccaedf005f8a2c4fb8f26c439608c960e9  hailo-pci-v4.19.0.tar.gz

buildroot-external/package/hailo-pci/hailo-pci.mk

@@ -0,0 +1,8 @@
+HAILO_PCI_VERSION = v4.19.0
+HAILO_PCI_SITE = $(call github,hailo-ai,hailort-drivers,$(HAILO_PCI_VERSION))
+HAILO_PCI_LICENSE = GPL-2.0
+HAILO_PCI_LICENSE_FILES = LICENSE
+HAILO_PCI_MODULE_SUBDIRS = linux/pcie
+
+$(eval $(kernel-module))
+$(eval $(generic-package))

buildroot-external/package/hailo8-firmware/Config.in

@@ -1,6 +1,6 @@
 config BR2_PACKAGE_HAILO8_FIRMWARE
 	bool "Hailo-8 Firmware"
 	help
-	  Firmware for Hailo-8 PCIe device found e.g. on Raspberry Pi AI
-	  Kit and Raspberry Pi AI HAT+. Requires the hailo kernel driver
-	  (included in Raspberry Pi's downstream kernel).
+	  Firmware for Hailo-8 PCIe device found e.g. on Raspberry Pi
+	  AI Kit and Raspberry Pi AI HAT+. Required for hailo_pci kernel
+	  module.

buildroot-external/package/hailo8-firmware/hailo8-firmware.mk

@@ -13,9 +13,13 @@ define HAILO8_FIRMWARE_EXTRACT_CMDS
 	cp $(HAILO8_FIRMWARE_DL_DIR)/$(HAILO8_FIRMWARE_SOURCE) $(@D)
 endef
 
+define HAILO8_FIRMWARE_BUILD_CMDS
+	cp $(@D)/$(HAILO8_FIRMWARE_SOURCE) $(@D)/hailo8_fw.bin
+endef
+
 define HAILO8_FIRMWARE_INSTALL_TARGET_CMDS
 	$(INSTALL) -d $(TARGET_DIR)/lib/firmware/hailo
-	$(INSTALL) -m 0644 $(@D)/$(HAILO8_FIRMWARE_SOURCE) $(TARGET_DIR)/lib/firmware/hailo/
+	$(INSTALL) -m 0644 $(@D)/hailo8_fw.bin $(TARGET_DIR)/lib/firmware/hailo/
 endef
 
 $(eval $(generic-package))