HAL: add display HAL for emulatorsubmit/tizen/20160316.061038accepted/tizen/wearable/20160316.081733accepted/tizen/tv/20160316.081716accepted/tizen/mobile/20160316.081701accepted/tizen/ivi/20160316.081751accepted/tizen/common/20160316.160541

- HAL for emulator is added. Currently just display HAL
  is available.

Change-Id: Ib683cb26c45f26b803f78850ee643e64e63f0c56
Signed-off-by: Taeyoung Kim <ty317.kim@samsung.com>

7 files changed, 530 insertions, 0 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6aee3d0..27ed342 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -31,3 +31,5 @@ TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${pkgs_LDFLAGS})
 SET(PREFIX ${CMAKE_INSTALL_PREFIX})
 
 INSTALL(TARGETS ${PROJECT_NAME} DESTINATION ${LIB_INSTALL_DIR} COMPONENT RuntimeLibraries)
+
+ADD_SUBDIRECTORY(hw/display)
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..fef8c29
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,202 @@
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diff --git a/hw/display/CMakeLists.txt b/hw/display/CMakeLists.txt
new file mode 100644
index 0000000..ebccfbe
--- /dev/null
+++ b/hw/display/CMakeLists.txt
@@ -0,0 +1,19 @@
+CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
+PROJECT(display C)
+
+SET(PREFIX ${CMAKE_INSTALL_PREFIX})
+
+INCLUDE(FindPkgConfig)
+pkg_check_modules(display_pkgs REQUIRED hwcommon dlog)
+
+FOREACH(flag ${display_pkgs_CFLAGS})
+	SET(EXTRA_CFLAGS "${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 display.c ../shared.c)
+TARGET_LINK_LIBRARIES(${PROJECT_NAME} ${display_pkgs_LDFLAGS})
+SET_TARGET_PROPERTIES(${PROJECT_NAME} PROPERTIES PREFIX "")
+INSTALL(TARGETS ${PROJECT_NAME} DESTINATION ${LIB_INSTALL_DIR}/hw COMPONENT RuntimeLibraries)
diff --git a/hw/display/display.c b/hw/display/display.c
new file mode 100644
index 0000000..fa9821f
--- /dev/null
+++ b/hw/display/display.c
@@ -0,0 +1,132 @@
+/*
+ * device-node
+ *
+ * Copyright (c) 2015 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.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <linux/limits.h>
+
+#include <hw/display.h>
+#include "../shared.h"
+
+#ifndef BACKLIGHT_PATH
+#define BACKLIGHT_PATH  "/sys/class/backlight/emulator"
+#endif
+
+static int get_max_brightness(int *val)
+{
+	static int max = -1;
+	int r;
+
+	if (!val)
+		return -EINVAL;
+
+	if (max < 0) {
+		r = sys_get_int(BACKLIGHT_PATH"/max_brightness", &max);
+		if (r < 0)
+			return r;
+	}
+
+	*val = max;
+	return 0;
+}
+
+static int display_get_brightness(int *brightness)
+{
+	int r, v;
+
+	if (!brightness) {
+		_E("wrong parameter");
+		return -EINVAL;
+	}
+
+	r = sys_get_int(BACKLIGHT_PATH"/brightness", &v);
+	if (r < 0) {
+		_E("fail to get brightness (errno:%d)", r);
+		return r;
+	}
+
+	*brightness = v;
+	return 0;
+}
+
+static int display_set_brightness(int brightness)
+{
+	int r, v, max;
+
+	if (brightness < 0 || brightness > 100) {
+		_E("wrong parameter");
+		return -EINVAL;
+	}
+
+	r = get_max_brightness(&max);
+	if (r < 0) {
+		_E("fail to get max brightness (errno:%d)", r);
+		return r;
+	}
+
+	v = brightness/100.f*max;
+	r = sys_set_int(BACKLIGHT_PATH"/brightness", v);
+	if (r < 0) {
+		_E("fail to set brightness (errno:%d)", r);
+		return r;
+	}
+
+	return 0;
+}
+
+static int display_open(struct hw_info *info,
+		const char *id, struct hw_common **common)
+{
+	struct display_device *display_dev;
+
+	if (!info || !common)
+		return -EINVAL;
+
+	display_dev = calloc(1, sizeof(struct display_device));
+	if (!display_dev)
+		return -ENOMEM;
+
+	display_dev->common.info = info;
+	display_dev->get_brightness = display_get_brightness;
+	display_dev->set_brightness = display_set_brightness;
+
+	*common = (struct hw_common *)display_dev;
+	return 0;
+}
+
+static int display_close(struct hw_common *common)
+{
+	if (!common)
+		return -EINVAL;
+
+	free(common);
+	return 0;
+}
+
+HARDWARE_MODULE_STRUCTURE = {
+	.magic = HARDWARE_INFO_TAG,
+	.hal_version = HARDWARE_INFO_VERSION,
+	.device_version = DISPLAY_HARDWARE_DEVICE_VERSION,
+	.id = DISPLAY_HARDWARE_DEVICE_ID,
+	.name = "Display",
+	.open = display_open,
+	.close = display_close,
+};
diff --git a/hw/shared.c b/hw/shared.c
new file mode 100644
index 0000000..b6401c1
--- /dev/null
+++ b/hw/shared.c
@@ -0,0 +1,129 @@
+/*
+ * device-node
+ *
+ * Copyright (c) 2015 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.
+ */
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#define BUF_MAX		255
+
+static int sys_read_buf(char *file, char *buf, int len)
+{
+	int fd, r;
+
+	if (!file || !buf || len < 0)
+		return -EINVAL;
+
+	fd = open(file, O_RDONLY);
+	if (fd == -1)
+		return -ENOENT;
+
+	r = read(fd, buf, len);
+	close(fd);
+	if ((r >= 0) && (r < len))
+		buf[r] = '\0';
+	else
+		return -EIO;
+
+	return 0;
+}
+
+static int sys_write_buf(char *file, char *buf)
+{
+	int fd, r;
+
+	if (!file || !buf)
+		return -EINVAL;
+
+	fd = open(file, O_WRONLY);
+	if (fd == -1)
+		return -EPERM;
+
+	r = write(fd, buf, strlen(buf));
+	close(fd);
+	if (r < 0)
+		return -EIO;
+
+	return 0;
+}
+
+int sys_get_int(char *fname, int *val)
+{
+	char buf[BUF_MAX];
+	int r;
+
+	if (!fname || !val)
+		return -EINVAL;
+
+	r = sys_read_buf(fname, buf, sizeof(buf));
+	if (r < 0)
+		return r;
+
+	*val = atoi(buf);
+	return 0;
+}
+
+int sys_get_str(char *fname, char *str, int len)
+{
+	int r;
+
+	if (!fname || !str || len < 0)
+		return -EINVAL;
+
+	r = sys_read_buf(fname, str, len);
+	if (r < 0)
+		return r;
+
+	return 0;
+}
+
+int sys_set_int(char *fname, int val)
+{
+	char buf[BUF_MAX];
+	int r;
+
+	if (!fname)
+		return -EINVAL;
+
+	snprintf(buf, sizeof(buf), "%d", val);
+	r = sys_write_buf(fname, buf);
+	if (r < 0)
+		return r;
+
+	return 0;
+}
+
+int sys_set_str(char *fname, char *val)
+{
+	int r;
+
+	if (!fname || !val)
+		return -EINVAL;
+
+	r = sys_write_buf(fname, val);
+	if (r < 0)
+		return r;
+
+	return 0;
+}
diff --git a/hw/shared.h b/hw/shared.h
new file mode 100644
index 0000000..da51ca4
--- /dev/null
+++ b/hw/shared.h
@@ -0,0 +1,43 @@
+/*
+ * libdevice-node
+ *
+ * Copyright (c) 2015 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.
+ */
+
+
+#ifndef __HW_DEFAULT_SHARED_H__
+#define __HW_DEFAULT_SHARED_H__
+
+#define FEATURE_HARDWARE_DLOG
+#ifdef FEATURE_HARDWARE_DLOG
+#define LOG_TAG	"HARDWARE"
+#include <dlog.h>
+#define _I(fmt, args...)	SLOGI(fmt, ##args)
+#define _D(fmt, args...)	SLOGD(fmt, ##args)
+#define _E(fmt, args...)	SLOGE(fmt, ##args)
+#else
+#define _I(x, ...)			do { } while (0)
+#define _D(x, ...)			do { } while (0)
+#define _E(x, ...)			do { } while (0)
+#endif
+
+#define ARRAY_SIZE(name) (sizeof(name)/sizeof(name[0]))
+
+int sys_get_int(char *fname, int *val);
+int sys_get_str(char *fname, char *str, int len);
+int sys_set_int(char *fname, int val);
+int sys_set_str(char *fname, char *val);
+
+#endif
diff --git a/packaging/device-manager-plugin-emul.spec b/packaging/device-manager-plugin-emul.spec
index 623f090..ea8f864 100644
--- a/packaging/device-manager-plugin-emul.spec
+++ b/packaging/device-manager-plugin-emul.spec
@@ -10,6 +10,7 @@ Requires(postun):   /sbin/ldconfig
 BuildRequires:      cmake
 BuildRequires:      pkgconfig(dlog)
 BuildRequires:      pkgconfig(devman_plugin)
+BuildRequires:      pkgconfig(hwcommon)
 
 %description
 Emulator plugin for libdevice-node.
@@ -33,7 +34,9 @@ make
 /sbin/ldconfig
 
 %files
+%license LICENSE
 %defattr(-,root,root,-)
 %manifest device-manager-plugin-emul.manifest
 %{_libdir}/libslp_devman_plugin.so
+%{_libdir}/hw/*.so