From 96d1f6b556bef588752053eb0866b2a115c0191a Mon Sep 17 00:00:00 2001
From: Hyotaek Shim <hyotaek.shim@samsung.com>
Date: Tue, 25 Feb 2020 11:45:35 +0900
Subject: [PATCH] Add board module

Change-Id: I32465c971caf578d11e6de94a12c8d5601d839f9
Signed-off-by: Hyotaek Shim <hyotaek.shim@samsung.com>
---
 CMakeLists.txt          |  1 +
 hw/board/CMakeLists.txt | 19 +++++++++++
 hw/board/board.c        | 91 +++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 111 insertions(+)
 create mode 100644 hw/board/CMakeLists.txt
 create mode 100644 hw/board/board.c

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2633052..5a00adc 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,6 +5,7 @@ SET(PREFIX ${CMAKE_INSTALL_PREFIX})
 
 SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_CFLAGS} -Wall -Werror")
 
+ADD_SUBDIRECTORY(hw/board)
 ADD_SUBDIRECTORY(hw/display)
 ADD_SUBDIRECTORY(hw/led)
 ADD_SUBDIRECTORY(hw/touchscreen)
diff --git a/hw/board/CMakeLists.txt b/hw/board/CMakeLists.txt
new file mode 100644
index 0000000..5b8b5b4
--- /dev/null
+++ b/hw/board/CMakeLists.txt
@@ -0,0 +1,19 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
+PROJECT(board C)
+
+SET(PREFIX ${CMAKE_INSTALL_PREFIX})
+
+INCLUDE(FindPkgConfig)
+pkg_check_modules(usb_gadget_pkgs REQUIRED hwcommon)
+
+FOREACH(flag ${usb_gadget_pkgs_CFLAGS})
+	SET(EXTRA_CFLAGS "${EXTRA_CFLAGS} ${flag}")
+ENDFOREACH(flag)
+
+SET(EXTRA_CFLAGS "${EXTRA_CFLAGS} -fvisibility=hidden")
+SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EXTRA_CFLAGS}")
+
+ADD_LIBRARY(${PROJECT_NAME} MODULE board.c)
+TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${usb_gadget_pkgs_LDFLAGS})
+SET_TARGET_PROPERTIES(${PROJECT_NAME} PROPERTIES PREFIX "")
+INSTALL(TARGETS ${PROJECT_NAME} DESTINATION ${LIB_INSTALL_DIR}/hw COMPONENT RuntimeLibraries)
diff --git a/hw/board/board.c b/hw/board/board.c
new file mode 100644
index 0000000..3c6b42d
--- /dev/null
+++ b/hw/board/board.c
@@ -0,0 +1,91 @@
+/*
+ * libdevice-node
+ *
+ * Copyright (c) 2016 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the License);
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#define _GNU_SOURCE
+#include <hw/board.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+#include <string.h>
+
+#define SERIAL_FILE_PATH "/sys/firmware/devicetree/base/serial-number"
+#define LINE_LEN 64
+
+static int get_device_serial(char **out)
+{
+	FILE *fp;
+	char *line, *p;
+
+	fp = fopen(SERIAL_FILE_PATH, "r");
+	if (!fp)
+		return -1;
+
+	line = malloc(LINE_LEN);
+	p = fgets(line, LINE_LEN, fp);
+	fclose(fp);
+	if (p == NULL) {
+		free(line);
+		return -1;
+	}
+
+	*out = p;
+	return 0;
+}
+
+static int board_open(struct hw_info *info,
+		const char *id, struct hw_common **common)
+{
+	struct hw_board *b;
+
+	if (!info || !common)
+		return -EINVAL;
+
+	b = calloc(1, sizeof(*b));
+	if (!b)
+		return -ENOMEM;
+
+	b->common.info = info;
+	b->get_device_serial = get_device_serial;
+
+	*common = &b->common;
+	return 0;
+}
+
+static int board_close(struct hw_common *common)
+{
+	struct hw_board *b;
+
+	if (!common)
+		return -EINVAL;
+
+	b = container_of(common, struct hw_board, common);
+	free(b);
+
+	return 0;
+}
+
+HARDWARE_MODULE_STRUCTURE = {
+	.magic = HARDWARE_INFO_TAG,
+	.hal_version = HARDWARE_INFO_VERSION,
+	.device_version = BOARD_HARDWARE_DEVICE_VERSION,
+	.id = BOARD_HARDWARE_DEVICE_ID,
+	.name = "device",
+	.open = board_open,
+	.close = board_close,
+};
-- 
2.7.4