Audio: DLKM support for all audio modules

Switch to DLKM for all audio kernel modules.

Change-Id: I6a96023a21f655f873531af9ace81f2b01eb0f58
Signed-off-by: Laxminath Kasam <lkasam@codeaurora.org>
diff --git a/dsp/codecs/Kbuild b/dsp/codecs/Kbuild
new file mode 100644
index 0000000..683f599
--- /dev/null
+++ b/dsp/codecs/Kbuild
@@ -0,0 +1,133 @@
+# We can build either as part of a standalone Kernel build or as
+# an external module.  Determine which mechanism is being used
+KERNEL_BUILD := 0
+
+
+ifeq ($(KERNEL_BUILD), 0)
+	# These are configurable via Kconfig for kernel-based builds
+	# Need to explicitly configure for Android-based builds
+	ifeq ($(CONFIG_ARCH_SDM845), y)
+		include $(AUDIO_ROOT)/config/sdm845auto.conf
+		export
+	endif
+	ifeq ($(CONFIG_ARCH_SDM670), y)
+		include $(AUDIO_ROOT)/config/sdm670auto.conf
+		export
+	endif
+endif
+
+
+# As per target team, build is done as follows:
+# Defconfig : build with default flags
+# Slub      : defconfig  + CONFIG_SLUB_DEBUG := y +
+#	      CONFIG_SLUB_DEBUG_ON := y + CONFIG_PAGE_POISONING := y
+# Perf      : Using appropriate msmXXXX-perf_defconfig
+#
+# Shipment builds (user variants) should not have any debug feature
+# enabled. This is identified using 'TARGET_BUILD_VARIANT'. Slub builds
+# are identified using the CONFIG_SLUB_DEBUG_ON configuration. Since
+# there is no other way to identify defconfig builds, QTI internal
+# representation of perf builds (identified using the string 'perf'),
+# is used to identify if the build is a slub or defconfig one. This
+# way no critical debug feature will be enabled for perf and shipment
+# builds. Other OEMs are also protected using the TARGET_BUILD_VARIANT
+# config.
+
+############ UAPI ############
+UAPI_DIR :=	uapi
+UAPI_INC :=	-I$(AUDIO_ROOT)/include/$(UAPI_DIR)
+
+############ COMMON ############
+COMMON_DIR :=	include
+COMMON_INC :=	-I$(AUDIO_ROOT)/$(COMMON_DIR)
+
+############ Native Enc/Dec ############
+
+ifeq ($(CONFIG_MSM_QDSP6V2_CODECS), m)
+	NATIVE_OBJS += q6audio_v2.o q6audio_v2_aio.o
+	NATIVE_OBJS += audio_utils_aio.o
+	NATIVE_OBJS += audio_utils.o
+	NATIVE_OBJS += audio_native.o
+	NATIVE_OBJS += aac_in.o
+	NATIVE_OBJS += amrnb_in.o
+	NATIVE_OBJS += amrwb_in.o
+	NATIVE_OBJS += audio_aac.o
+	NATIVE_OBJS += audio_alac.o
+	NATIVE_OBJS += audio_amrnb.o
+	NATIVE_OBJS += audio_amrwb.o
+	NATIVE_OBJS += audio_amrwbplus.o
+	NATIVE_OBJS += audio_ape.o
+	NATIVE_OBJS += audio_evrc.o
+	NATIVE_OBJS += audio_g711alaw.o
+	NATIVE_OBJS += audio_g711mlaw.o
+	NATIVE_OBJS += audio_hwacc_effects.o
+	NATIVE_OBJS += audio_mp3.o
+	NATIVE_OBJS += audio_multi_aac.o
+	NATIVE_OBJS += audio_qcelp.o
+	NATIVE_OBJS += audio_wma.o
+	NATIVE_OBJS += audio_wmapro.o
+	NATIVE_OBJS += evrc_in.o
+	NATIVE_OBJS += g711alaw_in.o
+	NATIVE_OBJS += g711mlaw_in.o
+	NATIVE_OBJS += qcelp_in.o
+endif
+
+LINUX_INC +=	-Iinclude/linux
+
+INCS :=		$(COMMON_INC) \
+		$(UAPI_INC)
+
+ifeq ($(CONFIG_ARCH_SDM845), y)
+INCS    +=  -include $(AUDIO_ROOT)/config/sdm845autoconf.h
+endif
+ifeq ($(CONFIG_ARCH_SDM670), y)
+INCS    +=  -include $(AUDIO_ROOT)/config/sdm670autoconf.h
+endif
+
+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 ($(call cc-option-yn, -Wheader-guard),y)
+EXTRA_CFLAGS += -Wheader-guard
+endif
+
+KBUILD_EXTRA_SYMBOLS +=$(OUT)/obj/vendor/qcom/opensource/audio-kernel/dsp/Module.symvers
+KBUILD_EXTRA_SYMBOLS +=$(OUT)/obj/vendor/qcom/opensource/audio-kernel/asoc/Module.symvers
+# If the module name is not "wlan", then the define MULTI_IF_NAME to be the
+# same a the QCA CHIP name. The host driver will then append MULTI_IF_NAME to
+# any string that must be unique for all instances of the driver on the system.
+# This allows multiple instances of the driver with different module names.
+# If the module name is wlan, leave MULTI_IF_NAME undefined and the code will
+# treat the driver as the primary driver.
+ifneq ($(MODNAME), qdsp6v2)
+CHIP_NAME ?= $(MODNAME)
+CDEFINES += -DMULTI_IF_NAME=\"$(CHIP_NAME)\"
+endif
+
+# Module information used by KBuild framework
+obj-$(CONFIG_MSM_QDSP6V2_CODECS) += native_dlkm.o
+native_dlkm-y := $(NATIVE_OBJS)
+
+# inject some build related information
+DEFINES += -DBUILD_TIMESTAMP=\"$(shell date -u +'%Y-%m-%dT%H:%M:%SZ')\"