# We can build either as part of a standalone Kernel build or as
# an external module. Determine which mechanism is being used
ifeq ($(MODNAME),)
    KERNEL_BUILD := 1
else
    KERNEL_BUILD := 0
endif

ifeq ($(KERNEL_BUILD), 1)
    # These are configurable via Kconfig for kernel-based builds
    # Need to explicitly configure for Android-based builds
    AUDIO_BLD_DIR := $(ANDROID_BUILD_TOP)/kernel/msm-4.9
    AUDIO_ROOT := $(AUDIO_BLD_DIR)/techpack/audio
endif

ifeq ($(KERNEL_BUILD), 0)
    ifeq ($(CONFIG_ARCH_BENGAL), y)
        include $(AUDIO_ROOT)/config/bengalauto.conf
        export
        INCS += -include $(AUDIO_ROOT)/config/bengalautoconf.h
    endif
    ifeq ($(CONFIG_ARCH_SDM845), y)
        include $(AUDIO_ROOT)/config/sdm845auto.conf
        export
        INCS += -include $(AUDIO_ROOT)/config/sdm845autoconf.h
    endif
    ifeq ($(CONFIG_ARCH_SDM670), y)
        include $(AUDIO_ROOT)/config/sdm710auto.conf
        export
        INCS += -include $(AUDIO_ROOT)/config/sdm710autoconf.h
    endif
    ifeq ($(CONFIG_ARCH_SDM450), y)
        include $(AUDIO_ROOT)/config/sdm450auto.conf
        export
        INCS += -include $(AUDIO_ROOT)/config/sdm450autoconf.h
    endif
endif

# As per target team, build is done as follows:
# Defconfig : build with default flags
# Slub: defconfig + CONFIG_SLUB_DEBUG := y +
# CONFIG_SLUB_DEBUG_ON := y + CONFIG_PAGE_POISONING := y
# Perf: Using appropriate msmXXXX-perf_defconfig
#
# Shipment builds (user variants) should not have any debug feature
# enabled. This is identified using 'TARGET_BUILD_VARIANT'. Slub builds
# are identified using the CONFIG_SLUB_DEBUG_ON configuration. Since
# there is no other way to identify defconfig builds, QTI internal
# representation of perf builds (identified using the string 'perf'),
# is used to identify if the build is a slub or defconfig one. This
# way no critical debug feature will be enabled for perf and shipment
# builds. Other OEMs are also protected using the TARGET_BUILD_VARIANT
# config.

############ UAPI ############
UAPI_DIR := uapi
UAPI_INC := -I$(AUDIO_ROOT)/include/$(UAPI_DIR)

############ COMMON ############
COMMON_DIR := include
COMMON_INC := -I$(AUDIO_ROOT)/$(COMMON_DIR)

############ AW882XX ############
# for AW882XX PA
ifdef CONFIG_SND_SOC_AW882XX
    AW882XX_PA_OBJS += aw882xx.o
    AW882XX_PA_OBJS += aw882xx_bin_parse.o
    AW882XX_PA_OBJS += aw882xx_calib.o
    AW882XX_PA_OBJS += aw882xx_device.o
    AW882XX_PA_OBJS += aw882xx_dsp.o
    AW882XX_PA_OBJS += aw882xx_init.o
    AW882XX_PA_OBJS += aw882xx_monitor.o
    AW882XX_PA_OBJS += aw882xx_spin.o
endif

LINUX_INC += -Iinclude/linux

INCS += $(COMMON_INC) \
        $(UAPI_INC)

EXTRA_CFLAGS += $(INCS)

CDEFINES += -DANI_LITTLE_BYTE_ENDIAN \
            -DANI_LITTLE_BIT_ENDIAN \
            -DDOT11F_LITTLE_ENDIAN_HOST \
            -DANI_COMPILER_TYPE_GCC \
            -DANI_OS_TYPE_ANDROID=6 \
            -DPTT_SOCK_SVC_ENABLE \
            -Wall\
            -Werror\
            -D__linux__

KBUILD_CPPFLAGS += $(CDEFINES)

# Currently, for versions of gcc which support it, the kernel Makefile
# is disabling the maybe-uninitialized warning. Re-enable it for the
# AUDIO driver. Note that we must use EXTRA_CFLAGS here so that it
# will override the kernel settings.
ifeq ($(call cc-option-yn, -Wmaybe-uninitialized),y)
EXTRA_CFLAGS += -Wmaybe-uninitialized
endif
#EXTRA_CFLAGS += -Wmissing-prototypes

ifeq ($(call cc-option-yn, -Wheader-guard),y)
EXTRA_CFLAGS += -Wheader-guard
endif

ifeq ($(KERNEL_BUILD), 0)
KBUILD_EXTRA_SYMBOLS +=$(OUT)/obj/vendor/qcom/opensource/audio-kernel/ipc/Module.symvers
KBUILD_EXTRA_SYMBOLS +=$(OUT)/obj/vendor/qcom/opensource/audio-kernel/dsp/Module.symvers
KBUILD_EXTRA_SYMBOLS +=$(OUT)/obj/vendor/qcom/opensource/audio-kernel/asoc/Module.symvers
KBUILD_EXTRA_SYMBOLS +=$(OUT)/obj/vendor/qcom/opensource/audio-kernel/asoc/codecs/Module.symvers
KBUILD_EXTRA_SYMBOLS +=$(OUT)/obj/vendor/qcom/opensource/audio-kernel/soc/Module.symvers
endif

# Module information used by KBuild framework
obj-$(CONFIG_SND_SOC_AW882XX) += aw882xx_dlkm.o
aw882xx_dlkm-y := $(AW882XX_PA_OBJS)

# inject some build related information
DEFINES += -DBUILD_TIMESTAMP=\"$(shell date -u +'%Y-%m-%dT%H:%M:%SZ')\"
