iopsys-feed/gryphon-led-module/Makefile
2022-11-15 12:04:23 +00:00

90 lines
3.5 KiB
Makefile

# Copyright (c) 2017 Genexis B.V.
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# version 2 as published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
# 02110-1301 USA
include $(TOPDIR)/rules.mk
include $(INCLUDE_DIR)/kernel.mk
PKG_NAME:=gryphon-led-kernel-module
PKG_RELEASE:=1
include $(INCLUDE_DIR)/package.mk
define KernelPackage/$(PKG_NAME)
SUBMENU:=LED modules
TITLE:=LED driver for Gryphon
FILES:=$(PKG_BUILD_DIR)/$(PKG_NAME).$(LINUX_KMOD_SUFFIX)
KCONFIG:=CONFIG_PACKAGE_kmod-gryphon-led-kernel-module=y
AUTOLOAD:=$(call AutoLoad,60,$(PKG_NAME))
DEPENDS:= +(TARGET_brcmbca):bcmkernel
PKG_LICENSE:=GPLv2
PKG_LICENSE_URL:=
endef
define KernelPackage/$(PKG_NAME)/description
This package contains the LED driver for Gryphon devices.
endef
EXTRA_KCONFIG:= CONFIG_RGB_LED=m
MODULE_INCLUDE=-I$(PKG_BUILD_DIR)
ifeq ($(CONFIG_TARGET_brcmbca),y)
LINUX_DIR:=$(BUILD_DIR)/bcmkernel/bcm963xx/kernel/linux-4.19
# This assumes that the MODULES_SUBDIR set by OpenWrt is of the form
# lib/modules/4.19.235-abcdef where 4.19.235 is the version of our fake bcmlinux kernel
# and abcdef the git-commit.
# The kernel compiled by the Broadcom SDK has a uname -r of 4.19.235, i.e. without the git-commit.
# The assignment below removes the part after the - which puts modules in the right directory as
# long as the bcmlinux version matches the kernel version in the BCM SDK.
# So, this will only stop working in the time window where the BCM SDK has been updated
# but bcmlinux has not yet been updated.
MODULES_SUBDIR:=$(firstword $(subst -, ,$(MODULES_SUBDIR)))
TARGET_CROSS:=$(CONFIG_BRCM_ALT_TOOLCHAIN_BASE)/$(CONFIG_BRCM_ALT_ARM_TOOLCHAIN_TOPDIR)/bin/$(CONFIG_BRCM_ALT_ARM_TOOLCHAIN_PREFIX)-
ifeq ($(CONFIG_BCM_CHIP_ID),$(filter $(CONFIG_BCM_CHIP_ID),"63158" "6856" "6858"))
# These targets use a 64-bit kernel
LINUX_KARCH:=arm64
TARGET_CROSS:=$(CONFIG_BRCM_ALT_TOOLCHAIN_BASE)/$(CONFIG_BRCM_ALT_AARCH64_TOOLCHAIN_TOPDIR)/bin/$(CONFIG_BRCM_ALT_AARCH64_TOOLCHAIN_PREFIX)-
else ifeq ($(CONFIG_BCM_CHIP_ID),$(filter $(CONFIG_BCM_CHIP_ID),"6855" "6756" "47622" "63148" "63178"))
# These targets use a 32-bit arm-sfp kernel
LINUX_KARCH:=arm
TARGET_CROSS:=$(CONFIG_BRCM_ALT_TOOLCHAIN_BASE)/$(CONFIG_BRCM_ALT_ARMSFP_TOOLCHAIN_TOPDIR)/bin/$(CONFIG_BRCM_ALT_ARMSFP_TOOLCHAIN_PREFIX)-
endif
# For some reason, Broadcom's kernel does not set the include paths correctly when compiling out-of-tree modules
EXTRA_KCPPFLAGS:="-I $(LINUX_DIR)/../bcmkernel/include -I $(LINUX_DIR)/arch/arm/mach-bcm963xx/include"
endif
define Build/Prepare
mkdir -p $(PKG_BUILD_DIR)/kdevlinks/
$(CP) -s `pwd`/src/* $(PKG_BUILD_DIR)/kdevlinks/
$(CP) src/* $(PKG_BUILD_DIR)
endef
define Build/Compile
$(MAKE) -C "$(LINUX_DIR)" \
CROSS_COMPILE="$(TARGET_CROSS)" \
ARCH="$(LINUX_KARCH)" \
SUBDIRS="$(PKG_BUILD_DIR)" \
EXTRA_CFLAGS="-DKERNEL_MODULE $(BUILDFLAGS) -I$(LINUX_DIR)/include -include generated/autoconf.h $(MODULE_INCLUDE)" \
modules
endef
define Build/InstallDev
$(INSTALL_DIR) $(1)/usr/include
endef
$(eval $(call KernelPackage,$(PKG_NAME)))