mm-drivers: enable mm-driver modules compilation

Enable compilation of mm-driver modules and add scripts to copy
the uapi header files.

Change-Id: I0af6581ca96aa630c9707ef05abc4cccbfe92bab
Signed-off-by: Jeykumar Sankaran <[email protected]>

Android.bp

@@ -0,0 +1,36 @@
+headers_src = [
+    "sync_fence/include/uapi/*/**/*.h",
+]
+
+mm_drivers_headers_out = [
+    "sync_fence/qcom_sync_file.h",
+]
+
+mm_drivers_kernel_headers_verbose = "--verbose "
+genrule {
+    name: "qti_generate_mm_drivers_kernel_headers",
+    tools: [
+        "headers_install.sh",
+        "unifdef"
+    ],
+    tool_files: [
+        "mm_drivers_kernel_headers.py",
+    ],
+    srcs: headers_src,
+    cmd: "python3 $(location mm_drivers_kernel_headers.py) " +
+          mm_drivers_kernel_headers_verbose +
+         "--header_arch arm64 " +
+         "--gen_dir $(genDir) " +
+         "--mm_drivers_include_uapi $(locations sync_fence/include/uapi/*/**/*.h) " +
+         "--unifdef $(location unifdef) " +
+         "--headers_install $(location headers_install.sh)",
+    out: mm_drivers_headers_out,
+}
+
+cc_library_headers {
+    name: "qti_mm_drivers_kernel_headers",
+    generated_headers: ["qti_generate_mm_drivers_kernel_headers"],
+    export_generated_headers: ["qti_generate_mm_drivers_kernel_headers"],
+    vendor: true,
+    recovery_available: true
+}

Android.mk

@@ -0,0 +1 @@
+include $(call all-subdir-makefiles)

config/kalamammdrivers.conf

@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+# Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+# Copyright (c) 2020, The Linux Foundation. All rights reserved.
+
+export CONFIG_MSM_EXT_DISPLAY=y

config/kalamammdriversconf.h

@@ -0,0 +1,7 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ * Copyright (c) 2020, The Linux Foundation. All rights reserved.
+ */
+
+#define CONFIG_MSM_EXT_DISPLAY 1

mm_driver_board.mk

@@ -0,0 +1,12 @@
+#SPDX-License-Identifier: GPL-2.0-only
+
+ifneq ($(TARGET_BOARD_AUTO),true)
+	ifeq ($(call is-board-platform-in-list,$(TARGET_BOARD_PLATFORM)),true)
+		BOARD_VENDOR_KERNEL_MODULES += $(KERNEL_MODULES_OUT)/msm_ext_display.ko \
+					       $(KERNEL_MODULES_OUT)/sync_fence.ko
+		BOARD_VENDOR_RAMDISK_KERNEL_MODULES += $(KERNEL_MODULES_OUT)/msm_ext_display.ko \
+					       	       $(KERNEL_MODULES_OUT)/sync_fence.ko
+		BOARD_VENDOR_RAMDISK_RECOVERY_KERNEL_MODULES_LOAD += $(KERNEL_MODULES_OUT)/msm_ext_display.ko \
+					                             $(KERNEL_MODULES_OUT)/sync_fence.ko
+	endif
+endif

mm_driver_product.mk

@@ -0,0 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+PRODUCT_PACKAGES += msm_ext_display.ko sync_fence.ko

mm_drivers_kernel_headers.py

@@ -0,0 +1,95 @@
+ # Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+ # Copyright (c) 2020-2021, The Linux Foundation. All rights reserved.
+ #
+ # 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, see <http://www.gnu.org/licenses/>.
+
+import argparse
+import filecmp
+import os
+import re
+import subprocess
+import sys
+
+def run_headers_install(verbose, gen_dir, headers_install, unifdef, prefix, h):
+    if not h.startswith(prefix):
+        print('error: expected prefix [%s] on header [%s]' % (prefix, h))
+        return False
+
+    out_h = os.path.join(gen_dir, h[len(prefix):])
+    (out_h_dirname, out_h_basename) = os.path.split(out_h)
+    env = os.environ.copy()
+    env["LOC_UNIFDEF"] = unifdef
+    cmd = ["sh", headers_install, h, out_h]
+
+    if True:
+        print('run_headers_install: cmd is %s' % cmd)
+
+    result = subprocess.call(cmd, env=env)
+
+    if result != 0:
+        print('error: run_headers_install: cmd %s failed %d' % (cmd, result))
+        return False
+    return True
+
+def gen_mm_drivers_headers(verbose, gen_dir, headers_install, unifdef, mm_drivers_include_uapi):
+    error_count = 0
+    for h in mm_drivers_include_uapi:
+        mm_drivers_uapi_include_prefix = os.path.join(h.split('sync_fence/include/uapi')[0],
+			'sync_fence', 'include', 'uapi') + os.sep
+        if not run_headers_install(
+                verbose, gen_dir, headers_install, unifdef,
+                mm_drivers_uapi_include_prefix, h): error_count += 1
+    return error_count
+
+def main():
+    """Parse command line arguments and perform top level control."""
+    parser = argparse.ArgumentParser(
+            description=__doc__,
+            formatter_class=argparse.RawDescriptionHelpFormatter)
+
+    # Arguments that apply to every invocation of this script.
+    parser.add_argument(
+            '--verbose', action='store_true',
+            help='Print output that describes the workings of this script.')
+    parser.add_argument(
+            '--header_arch', required=True,
+            help='The arch for which to generate headers.')
+    parser.add_argument(
+            '--gen_dir', required=True,
+            help='Where to place the generated files.')
+    parser.add_argument(
+            '--mm_drivers_include_uapi', required=True, nargs='*',
+            help='The list of techpack/*/include/uapi header files.')
+    parser.add_argument(
+            '--headers_install', required=True,
+            help='The headers_install tool to process input headers.')
+    parser.add_argument(
+              '--unifdef',
+              required=True,
+              help='The unifdef tool used by headers_install.')
+
+    args = parser.parse_args()
+
+    if args.verbose:
+        print('header_arch [%s]' % args.header_arch)
+        print('gen_dir [%s]' % args.gen_dir)
+        print('mm_drivers_include_uapi [%s]' % args.mm_drivers_include_uapi)
+        print('headers_install [%s]' % args.headers_install)
+        print('unifdef [%s]' % args.unifdef)
+
+    return gen_mm_drivers_headers(args.verbose, args.gen_dir,
+            args.headers_install, args.unifdef, args.mm_drivers_include_uapi)
+
+if __name__ == '__main__':
+    sys.exit(main())
+

msm_ext_display/Android.mk

@@ -0,0 +1,32 @@
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+# This makefile is only for DLKM
+ifneq ($(findstring vendor,$(LOCAL_PATH)),)
+
+ifneq ($(findstring opensource,$(LOCAL_PATH)),)
+	MSM_EXT_DISPLAY_BLD_DIR := $(TOP)/vendor/qcom/opensource/mm-drivers/msm_ext_display
+endif # opensource
+
+DLKM_DIR := $(TOP)/device/qcom/common/dlkm
+
+LOCAL_ADDITIONAL_DEPENDENCIES := $(wildcard $(LOCAL_PATH)/**/*) $(wildcard $(LOCAL_PATH)/*)
+
+###########################################################
+# This is set once per LOCAL_PATH, not per (kernel) module
+KBUILD_OPTIONS := MSM_EXT_DISPLAY_ROOT=$(MSM_EXT_DISPLAY_BLD_DIR)
+KBUILD_OPTIONS += MODNAME=msm_ext_display
+KBUILD_OPTIONS += BOARD_PLATFORM=$(TARGET_BOARD_PLATFORM)
+
+###########################################################
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES   := $(wildcard $(LOCAL_PATH)/**/*) $(wildcard $(LOCAL_PATH)/*)
+LOCAL_MODULE              := msm_ext_display.ko
+LOCAL_MODULE_KBUILD_NAME  := msm_ext_display.ko
+LOCAL_MODULE_TAGS         := optional
+LOCAL_MODULE_DEBUG_ENABLE := true
+LOCAL_MODULE_PATH         := $(KERNEL_MODULES_OUT)
+
+include $(DLKM_DIR)/Build_external_kernelmodule.mk
+###########################################################
+endif # DLKM check

msm_ext_display/Kbuild

@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+include $(MSM_EXT_DISPLAY_ROOT)/config/kalamammdrivers.conf
+LINUXINCLUDE += -include $(MSM_EXT_DISPLAY_ROOT)/config/kalamammdriversconf.h
+
+obj-m += msm_ext_display.o
+
+msm_ext_display-y := src/msm_ext_display.o
+
+CDEFINES += -DBUILD_TIMESTAMP=\"$(shell date -u +'%Y-%m-%dT%H:%M:%SZ')\"

msm_ext_display/Makefile

@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0
+
+KBUILD_OPTIONS += MSM_EXT_DISPLAY_ROOT=$(KERNEL_SRC)/$(M)/../
+
+all: modules
+
+modules_install:
+	$(MAKE) INSTALL_MOD_STRIP=1 -C $(KERNEL_SRC) M=$(M) modules_install
+
+%:
+	$(MAKE) -C $(KERNEL_SRC) M=$(M) $@ $(KBUILD_OPTIONS)
+
+clean:
+	rm -f *.o *.ko *.mod.c *.mod.o *~ .*.cmd Module.symvers
+	rm -rf .tmp_versions

sync_fence/Android.mk

@@ -0,0 +1,32 @@
+LOCAL_PATH := $(call my-dir)
+include $(CLEAR_VARS)
+
+# This makefile is only for DLKM
+ifneq ($(findstring vendor,$(LOCAL_PATH)),)
+
+ifneq ($(findstring opensource,$(LOCAL_PATH)),)
+	SYNC_FENCE_BLD_DIR := $(TOP)/vendor/qcom/opensource/mm-drivers/sync_fence
+endif # opensource
+
+DLKM_DIR := $(TOP)/device/qcom/common/dlkm
+
+LOCAL_ADDITIONAL_DEPENDENCIES := $(wildcard $(LOCAL_PATH)/**/*) $(wildcard $(LOCAL_PATH)/*)
+
+###########################################################
+# This is set once per LOCAL_PATH, not per (kernel) module
+KBUILD_OPTIONS := SYNC_FENCE_ROOT=$(SYNC_FENCE_BLD_DIR)
+KBUILD_OPTIONS += MODNAME=sync_fence
+KBUILD_OPTIONS += BOARD_PLATFORM=$(TARGET_BOARD_PLATFORM)
+
+###########################################################
+include $(CLEAR_VARS)
+LOCAL_SRC_FILES   := $(wildcard $(LOCAL_PATH)/**/*) $(wildcard $(LOCAL_PATH)/*)
+LOCAL_MODULE              := sync_fence.ko
+LOCAL_MODULE_KBUILD_NAME  := sync_fence.ko
+LOCAL_MODULE_TAGS         := optional
+LOCAL_MODULE_DEBUG_ENABLE := true
+LOCAL_MODULE_PATH         := $(KERNEL_MODULES_OUT)
+
+include $(DLKM_DIR)/Build_external_kernelmodule.mk
+###########################################################
+endif # DLKM check

sync_fence/Kbuild

@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+KDIR := $(TOP)/kernel_platform/msm-kernel
+LINUXINCLUDE    += -I$(SYNC_FENCE_ROOT)sync_fence/include/
+
+obj-m += sync_fence.o
+
+sync_fence-y := src/qcom_sync_file.o
+
+CDEFINES += -DBUILD_TIMESTAMP=\"$(shell date -u +'%Y-%m-%dT%H:%M:%SZ')\"

sync_fence/Makefile

@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0
+
+KBUILD_OPTIONS += SYNC_FENCE_ROOT=$(KERNEL_SRC)/$(M)/../
+
+all: modules
+
+modules_install:
+	$(MAKE) INSTALL_MOD_STRIP=1 -C $(KERNEL_SRC) M=$(M) modules_install
+
+%:
+	$(MAKE) -C $(KERNEL_SRC) M=$(M) $@ $(KBUILD_OPTIONS)
+
+clean:
+	rm -f *.o *.ko *.mod.c *.mod.o *~ .*.cmd Module.symvers
+	rm -rf .tmp_versions