diff --git a/BoardConfigCommon.mk b/BoardConfigCommon.mk
index 50336bb5352f1bcbbe461a029e52a3e8f906b083..5198dc47e1aed7616fc42a75ddb40d7e84096869 100644
--- a/BoardConfigCommon.mk
+++ b/BoardConfigCommon.mk
@@ -164,6 +164,9 @@ BOARD_HARDWARE_CLASS += \
# Keymaster
TARGET_PROVIDES_KEYMASTER := true
+# Lights
+TARGET_PROVIDES_LIBLIGHT := true
+
# Media
TARGET_USES_MEDIA_EXTENSIONS := true
diff --git a/liblight/Android.mk b/liblight/Android.mk
new file mode 100644
index 0000000000000000000000000000000000000000..2f2e1cac12ee6fabdcc456a07e423efa6f4ba4d6
--- /dev/null
+++ b/liblight/Android.mk
@@ -0,0 +1,32 @@
+# Copyright (C) 2008 The Android Open Source Project
+#
+# 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.
+
+LOCAL_PATH:= $(call my-dir)
+# HAL module implemenation stored in
+# hw/<COPYPIX_HARDWARE_MODULE_ID>.<ro.board.platform>.so
+include $(CLEAR_VARS)
+
+LOCAL_C_INCLUDES += $(TARGET_OUT_HEADERS)/common/inc
+LOCAL_C_INCLUDES += $(TARGET_OUT_HEADERS)/qdcm/inc
+
+LOCAL_SRC_FILES := lights.c lights_prv.cpp
+LOCAL_MODULE_RELATIVE_PATH := hw
+LOCAL_SHARED_LIBRARIES := liblog libcutils libsdm-disp-vndapis
+LOCAL_CFLAGS := -DLOG_TAG=\"qdlights\"
+LOCAL_CLANG := true
+LOCAL_MODULE := lights.$(TARGET_BOARD_PLATFORM)
+LOCAL_MODULE_TAGS := optional
+LOCAL_VENDOR_MODULE := true
+
+include $(BUILD_SHARED_LIBRARY)
diff --git a/liblight/NOTICE b/liblight/NOTICE
new file mode 100644
index 0000000000000000000000000000000000000000..7340b9e354bd9547b95986f2c8677c7f9d9b107a
--- /dev/null
+++ b/liblight/NOTICE
@@ -0,0 +1,190 @@
+
+ Copyright (c) 2008, The Android Open Source Project
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+
+ 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.
+
+
+ Apache License
+ Version 2.0, January 2004
+ http://www.apache.org/licenses/
+
+ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+ 1. Definitions.
+
+ "License" shall mean the terms and conditions for use, reproduction,
+ and distribution as defined by Sections 1 through 9 of this document.
+
+ "Licensor" shall mean the copyright owner or entity authorized by
+ the copyright owner that is granting the License.
+
+ "Legal Entity" shall mean the union of the acting entity and all
+ other entities that control, are controlled by, or are under common
+ control with that entity. For the purposes of this definition,
+ "control" means (i) the power, direct or indirect, to cause the
+ direction or management of such entity, whether by contract or
+ otherwise, or (ii) ownership of fifty percent (50%) or more of the
+ outstanding shares, or (iii) beneficial ownership of such entity.
+
+ "You" (or "Your") shall mean an individual or Legal Entity
+ exercising permissions granted by this License.
+
+ "Source" form shall mean the preferred form for making modifications,
+ including but not limited to software source code, documentation
+ source, and configuration files.
+
+ "Object" form shall mean any form resulting from mechanical
+ transformation or translation of a Source form, including but
+ not limited to compiled object code, generated documentation,
+ and conversions to other media types.
+
+ "Work" shall mean the work of authorship, whether in Source or
+ Object form, made available under the License, as indicated by a
+ copyright notice that is included in or attached to the work
+ (an example is provided in the Appendix below).
+
+ "Derivative Works" shall mean any work, whether in Source or Object
+ form, that is based on (or derived from) the Work and for which the
+ editorial revisions, annotations, elaborations, or other modifications
+ represent, as a whole, an original work of authorship. For the purposes
+ of this License, Derivative Works shall not include works that remain
+ separable from, or merely link (or bind by name) to the interfaces of,
+ the Work and Derivative Works thereof.
+
+ "Contribution" shall mean any work of authorship, including
+ the original version of the Work and any modifications or additions
+ to that Work or Derivative Works thereof, that is intentionally
+ submitted to Licensor for inclusion in the Work by the copyright owner
+ or by an individual or Legal Entity authorized to submit on behalf of
+ the copyright owner. For the purposes of this definition, "submitted"
+ means any form of electronic, verbal, or written communication sent
+ to the Licensor or its representatives, including but not limited to
+ communication on electronic mailing lists, source code control systems,
+ and issue tracking systems that are managed by, or on behalf of, the
+ Licensor for the purpose of discussing and improving the Work, but
+ excluding communication that is conspicuously marked or otherwise
+ designated in writing by the copyright owner as "Not a Contribution."
+
+ "Contributor" shall mean Licensor and any individual or Legal Entity
+ on behalf of whom a Contribution has been received by Licensor and
+ subsequently incorporated within the Work.
+
+ 2. Grant of Copyright License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ copyright license to reproduce, prepare Derivative Works of,
+ publicly display, publicly perform, sublicense, and distribute the
+ Work and such Derivative Works in Source or Object form.
+
+ 3. Grant of Patent License. Subject to the terms and conditions of
+ this License, each Contributor hereby grants to You a perpetual,
+ worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+ (except as stated in this section) patent license to make, have made,
+ use, offer to sell, sell, import, and otherwise transfer the Work,
+ where such license applies only to those patent claims licensable
+ by such Contributor that are necessarily infringed by their
+ Contribution(s) alone or by combination of their Contribution(s)
+ with the Work to which such Contribution(s) was submitted. If You
+ institute patent litigation against any entity (including a
+ cross-claim or counterclaim in a lawsuit) alleging that the Work
+ or a Contribution incorporated within the Work constitutes direct
+ or contributory patent infringement, then any patent licenses
+ granted to You under this License for that Work shall terminate
+ as of the date such litigation is filed.
+
+ 4. Redistribution. You may reproduce and distribute copies of the
+ Work or Derivative Works thereof in any medium, with or without
+ modifications, and in Source or Object form, provided that You
+ meet the following conditions:
+
+ (a) You must give any other recipients of the Work or
+ Derivative Works a copy of this License; and
+
+ (b) You must cause any modified files to carry prominent notices
+ stating that You changed the files; and
+
+ (c) You must retain, in the Source form of any Derivative Works
+ that You distribute, all copyright, patent, trademark, and
+ attribution notices from the Source form of the Work,
+ excluding those notices that do not pertain to any part of
+ the Derivative Works; and
+
+ (d) If the Work includes a "NOTICE" text file as part of its
+ distribution, then any Derivative Works that You distribute must
+ include a readable copy of the attribution notices contained
+ within such NOTICE file, excluding those notices that do not
+ pertain to any part of the Derivative Works, in at least one
+ of the following places: within a NOTICE text file distributed
+ as part of the Derivative Works; within the Source form or
+ documentation, if provided along with the Derivative Works; or,
+ within a display generated by the Derivative Works, if and
+ wherever such third-party notices normally appear. The contents
+ of the NOTICE file are for informational purposes only and
+ do not modify the License. You may add Your own attribution
+ notices within Derivative Works that You distribute, alongside
+ or as an addendum to the NOTICE text from the Work, provided
+ that such additional attribution notices cannot be construed
+ as modifying the License.
+
+ You may add Your own copyright statement to Your modifications and
+ may provide additional or different license terms and conditions
+ for use, reproduction, or distribution of Your modifications, or
+ for any such Derivative Works as a whole, provided Your use,
+ reproduction, and distribution of the Work otherwise complies with
+ the conditions stated in this License.
+
+ 5. Submission of Contributions. Unless You explicitly state otherwise,
+ any Contribution intentionally submitted for inclusion in the Work
+ by You to the Licensor shall be under the terms and conditions of
+ this License, without any additional terms or conditions.
+ Notwithstanding the above, nothing herein shall supersede or modify
+ the terms of any separate license agreement you may have executed
+ with Licensor regarding such Contributions.
+
+ 6. Trademarks. This License does not grant permission to use the trade
+ names, trademarks, service marks, or product names of the Licensor,
+ except as required for reasonable and customary use in describing the
+ origin of the Work and reproducing the content of the NOTICE file.
+
+ 7. Disclaimer of Warranty. Unless required by applicable law or
+ agreed to in writing, Licensor provides the Work (and each
+ Contributor provides its Contributions) on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+ implied, including, without limitation, any warranties or conditions
+ of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+ PARTICULAR PURPOSE. You are solely responsible for determining the
+ appropriateness of using or redistributing the Work and assume any
+ risks associated with Your exercise of permissions under this License.
+
+ 8. Limitation of Liability. In no event and under no legal theory,
+ whether in tort (including negligence), contract, or otherwise,
+ unless required by applicable law (such as deliberate and grossly
+ negligent acts) or agreed to in writing, shall any Contributor be
+ liable to You for damages, including any direct, indirect, special,
+ incidental, or consequential damages of any character arising as a
+ result of this License or out of the use or inability to use the
+ Work (including but not limited to damages for loss of goodwill,
+ work stoppage, computer failure or malfunction, or any and all
+ other commercial damages or losses), even if such Contributor
+ has been advised of the possibility of such damages.
+
+ 9. Accepting Warranty or Additional Liability. While redistributing
+ the Work or Derivative Works thereof, You may choose to offer,
+ and charge a fee for, acceptance of support, warranty, indemnity,
+ or other liability obligations and/or rights consistent with this
+ License. However, in accepting such obligations, You may act only
+ on Your own behalf and on Your sole responsibility, not on behalf
+ of any other Contributor, and only if You agree to indemnify,
+ defend, and hold each Contributor harmless for any liability
+ incurred by, or claims asserted against, such Contributor by reason
+ of your accepting any such warranty or additional liability.
+
+ END OF TERMS AND CONDITIONS
+
diff --git a/liblight/disp_color_apis.h b/liblight/disp_color_apis.h
new file mode 100644
index 0000000000000000000000000000000000000000..07acb9ea5a496a68d54df24d2b115c74400deb07
--- /dev/null
+++ b/liblight/disp_color_apis.h
@@ -0,0 +1,59 @@
+#ifndef __DISP_COLOR_APIS_H__
+#define __DISP_COLOR_APIS_H__
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdlib.h>
+#include <sys/types.h>
+#include <cutils/log.h>
+
+typedef uint64_t DISPAPI_HANDLE;
+
+
+/*=========================================================================
+FUNCTION
+ disp_api_init()
+
+DESCRIPTION
+ This API initializes the display API library.
+
+ This function must be called before calling any display APIs.
+ The function returns a context handle that must be used on all subsequent
+ calls.
+
+ hctx -- returns context handle on a successful call
+ flags -- Reserved
+
+RETURN VALUE
+ ZERO (SUCCESS)- success.
+ Negative Value - error\failure
+=========================================================================*/
+
+int32_t disp_api_init(DISPAPI_HANDLE *hctx, uint32_t flags);
+
+/*=========================================================================
+FUNCTION
+ disp_api_set_panel_brightness_level_ext()
+
+DESCRIPTION
+ This API adjusts the backlight brightness.
+
+ hctx -- Context handle.
+ disp_id -- Display ID type
+ level -- Color balance adjustement, the larger the value the warmer the color
+ flags -- Reserved
+
+RETURN VALUE
+ ZERO (SUCCESS)- success.
+ Negative Value - error\failure
+=========================================================================*/
+int32_t disp_api_set_panel_brightness_level_ext(DISPAPI_HANDLE hctx, uint32_t disp_id, int32_t level,
+ uint32_t flags);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // __DISP_COLOR_APIS_H__
diff --git a/liblight/lights.c b/liblight/lights.c
new file mode 100644
index 0000000000000000000000000000000000000000..15db827bc5bb8ba6f2f639fbb4facdcc4644e83c
--- /dev/null
+++ b/liblight/lights.c
@@ -0,0 +1,411 @@
+/*
+ * Copyright (C) 2014, 2017 The Linux Foundation. All rights reserved.
+ * Not a contribution
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * 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 LOG_NDEBUG 0
+
+#include <cutils/log.h>
+#include <cutils/properties.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <pthread.h>
+
+#include <sys/ioctl.h>
+#include <sys/types.h>
+
+#include <hardware/lights.h>
+#include "lights_prv.h"
+
+#ifndef DEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS
+#define DEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS 0x80
+#endif
+
+/******************************************************************************/
+
+static pthread_once_t g_init = PTHREAD_ONCE_INIT;
+static pthread_mutex_t g_lock = PTHREAD_MUTEX_INITIALIZER;
+static struct light_state_t g_notification;
+static struct light_state_t g_battery;
+static int g_last_backlight_mode = BRIGHTNESS_MODE_USER;
+static int g_attention = 0;
+static int g_brightness_max = 0;
+
+char const*const RED_LED_FILE
+ = "/sys/class/leds/red/brightness";
+
+char const*const GREEN_LED_FILE
+ = "/sys/class/leds/green/brightness";
+
+char const*const BLUE_LED_FILE
+ = "/sys/class/leds/blue/brightness";
+
+char const*const LCD_FILE
+ = "/sys/class/leds/lcd-backlight/brightness";
+
+char const*const LCD_FILE2
+ = "/sys/class/backlight/panel0-backlight/brightness";
+
+char const*const BUTTON_FILE
+ = "/sys/class/leds/button-backlight/brightness";
+
+char const*const RED_BLINK_FILE
+ = "/sys/class/leds/red/blink";
+
+char const*const GREEN_BLINK_FILE
+ = "/sys/class/leds/green/blink";
+
+char const*const BLUE_BLINK_FILE
+ = "/sys/class/leds/blue/blink";
+
+char const*const PERSISTENCE_FILE
+ = "/sys/class/graphics/fb0/msm_fb_persist_mode";
+
+/**
+ * device methods
+ */
+
+void init_globals(void)
+{
+ // init the mutex
+ pthread_mutex_init(&g_lock, NULL);
+}
+
+static int
+write_int(char const* path, int value)
+{
+ int fd;
+ static int already_warned = 0;
+
+ fd = open(path, O_RDWR);
+ if (fd >= 0) {
+ char buffer[20];
+ int bytes = snprintf(buffer, sizeof(buffer), "%d\n", value);
+ ssize_t amt = write(fd, buffer, (size_t)bytes);
+ close(fd);
+ return amt == -1 ? -errno : 0;
+ } else {
+ if (already_warned == 0) {
+ ALOGE("write_int failed to open %s\n", path);
+ already_warned = 1;
+ }
+ return -errno;
+ }
+}
+
+static int
+is_lit(struct light_state_t const* state)
+{
+ return state->color & 0x00ffffff;
+}
+
+static int
+rgb_to_brightness(struct light_state_t const* state)
+{
+ int color = state->color & 0x00ffffff;
+ return ((77*((color>>16)&0x00ff))
+ + (150*((color>>8)&0x00ff)) + (29*(color&0x00ff))) >> 8;
+}
+
+static int
+set_light_backlight(struct light_device_t* dev,
+ struct light_state_t const* state)
+{
+ int err = 0;
+ int brightness = rgb_to_brightness(state);
+ unsigned int lpEnabled =
+ state->brightnessMode == BRIGHTNESS_MODE_LOW_PERSISTENCE;
+ if(!dev) {
+ return -1;
+ }
+
+ pthread_mutex_lock(&g_lock);
+ // Toggle low persistence mode state
+ if ((g_last_backlight_mode != state->brightnessMode && lpEnabled) ||
+ (!lpEnabled &&
+ g_last_backlight_mode == BRIGHTNESS_MODE_LOW_PERSISTENCE)) {
+ if ((err = write_int(PERSISTENCE_FILE, lpEnabled)) != 0) {
+ ALOGE("%s: Failed to write to %s: %s\n", __FUNCTION__,
+ PERSISTENCE_FILE, strerror(errno));
+ }
+ if (lpEnabled != 0) {
+ brightness = DEFAULT_LOW_PERSISTENCE_MODE_BRIGHTNESS;
+ }
+ }
+
+ g_last_backlight_mode = state->brightnessMode;
+
+ if (!err) {
+ if (!access(LCD_FILE, F_OK)) {
+ err = write_int(LCD_FILE, brightness);
+ } else {
+ err = write_int(LCD_FILE2, brightness);
+ }
+ }
+
+ pthread_mutex_unlock(&g_lock);
+ return err;
+}
+
+static int
+set_light_backlight_ext(struct light_device_t* dev,
+ struct light_state_t const* state)
+{
+ int err = 0;
+
+ if(!dev) {
+ return -1;
+ }
+
+ int brightness = state->color & 0x00ffffff;
+ pthread_mutex_lock(&g_lock);
+
+ if (brightness >= 0 && brightness <= g_brightness_max) {
+ set_brightness_ext_level(brightness);
+ }
+
+ pthread_mutex_unlock(&g_lock);
+
+ return err;
+}
+
+static int
+set_speaker_light_locked(struct light_device_t* dev,
+ struct light_state_t const* state)
+{
+ int red, green, blue;
+ int blink;
+ int onMS, offMS;
+ unsigned int colorRGB;
+
+ if(!dev) {
+ return -1;
+ }
+
+ switch (state->flashMode) {
+ case LIGHT_FLASH_TIMED:
+ onMS = state->flashOnMS;
+ offMS = state->flashOffMS;
+ break;
+ case LIGHT_FLASH_NONE:
+ default:
+ onMS = 0;
+ offMS = 0;
+ break;
+ }
+
+ colorRGB = state->color;
+
+#if 0
+ ALOGD("set_speaker_light_locked mode %d, colorRGB=%08X, onMS=%d, offMS=%d\n",
+ state->flashMode, colorRGB, onMS, offMS);
+#endif
+
+ red = (colorRGB >> 16) & 0xFF;
+ green = (colorRGB >> 8) & 0xFF;
+ blue = colorRGB & 0xFF;
+
+ if (onMS > 0 && offMS > 0) {
+ /*
+ * if ON time == OFF time
+ * use blink mode 2
+ * else
+ * use blink mode 1
+ */
+ if (onMS == offMS)
+ blink = 2;
+ else
+ blink = 1;
+ } else {
+ blink = 0;
+ }
+
+ if (blink) {
+ if (red) {
+ if (write_int(RED_BLINK_FILE, blink))
+ write_int(RED_LED_FILE, 0);
+ }
+ if (green) {
+ if (write_int(GREEN_BLINK_FILE, blink))
+ write_int(GREEN_LED_FILE, 0);
+ }
+ if (blue) {
+ if (write_int(BLUE_BLINK_FILE, blink))
+ write_int(BLUE_LED_FILE, 0);
+ }
+ } else {
+ write_int(RED_LED_FILE, red);
+ write_int(GREEN_LED_FILE, green);
+ write_int(BLUE_LED_FILE, blue);
+ }
+
+ return 0;
+}
+
+static void
+handle_speaker_battery_locked(struct light_device_t* dev)
+{
+ if (is_lit(&g_battery)) {
+ set_speaker_light_locked(dev, &g_battery);
+ } else {
+ set_speaker_light_locked(dev, &g_notification);
+ }
+}
+
+static int
+set_light_battery(struct light_device_t* dev,
+ struct light_state_t const* state)
+{
+ pthread_mutex_lock(&g_lock);
+ g_battery = *state;
+ handle_speaker_battery_locked(dev);
+ pthread_mutex_unlock(&g_lock);
+ return 0;
+}
+
+static int
+set_light_notifications(struct light_device_t* dev,
+ struct light_state_t const* state)
+{
+ pthread_mutex_lock(&g_lock);
+ g_notification = *state;
+ handle_speaker_battery_locked(dev);
+ pthread_mutex_unlock(&g_lock);
+ return 0;
+}
+
+static int
+set_light_attention(struct light_device_t* dev,
+ struct light_state_t const* state)
+{
+ pthread_mutex_lock(&g_lock);
+ if (state->flashMode == LIGHT_FLASH_HARDWARE) {
+ g_attention = state->flashOnMS;
+ } else if (state->flashMode == LIGHT_FLASH_NONE) {
+ g_attention = 0;
+ }
+ handle_speaker_battery_locked(dev);
+ pthread_mutex_unlock(&g_lock);
+ return 0;
+}
+
+static int
+set_light_buttons(struct light_device_t* dev,
+ struct light_state_t const* state)
+{
+ int err = 0;
+ if(!dev) {
+ return -1;
+ }
+ pthread_mutex_lock(&g_lock);
+ err = write_int(BUTTON_FILE, state->color & 0xFF);
+ pthread_mutex_unlock(&g_lock);
+ return err;
+}
+
+/** Close the lights device */
+static int
+close_lights(struct light_device_t *dev)
+{
+ if (dev) {
+ free(dev);
+ }
+ return 0;
+}
+
+
+/******************************************************************************/
+
+/**
+ * module methods
+ */
+
+/** Open a new instance of a lights device using name */
+static int open_lights(const struct hw_module_t* module, char const* name,
+ struct hw_device_t** device)
+{
+ int (*set_light)(struct light_device_t* dev,
+ struct light_state_t const* state);
+
+ if (0 == strcmp(LIGHT_ID_BACKLIGHT, name)) {
+ char property[PROPERTY_VALUE_MAX];
+ property_get("persist.extend.brightness", property, "0");
+
+ if(!(strncmp(property, "1", PROPERTY_VALUE_MAX)) ||
+ !(strncmp(property, "true", PROPERTY_VALUE_MAX))) {
+ property_get("persist.display.max_brightness", property, "255");
+ g_brightness_max = atoi(property);
+ set_brightness_ext_init();
+ set_light = set_light_backlight_ext;
+ } else
+ set_light = set_light_backlight;
+ } else if (0 == strcmp(LIGHT_ID_BATTERY, name))
+ set_light = set_light_battery;
+ else if (0 == strcmp(LIGHT_ID_NOTIFICATIONS, name))
+ set_light = set_light_notifications;
+ else if (0 == strcmp(LIGHT_ID_BUTTONS, name)) {
+ if (!access(BUTTON_FILE, F_OK)) {
+ // enable light button when the file is present
+ set_light = set_light_buttons;
+ } else {
+ return -EINVAL;
+ }
+ }
+ else if (0 == strcmp(LIGHT_ID_ATTENTION, name))
+ set_light = set_light_attention;
+ else
+ return -EINVAL;
+
+ pthread_once(&g_init, init_globals);
+
+ struct light_device_t *dev = malloc(sizeof(struct light_device_t));
+
+ if(!dev)
+ return -ENOMEM;
+
+ memset(dev, 0, sizeof(*dev));
+
+ dev->common.tag = HARDWARE_DEVICE_TAG;
+ dev->common.version = LIGHTS_DEVICE_API_VERSION_2_0;
+ dev->common.module = (struct hw_module_t*)module;
+ dev->common.close = (int (*)(struct hw_device_t*))close_lights;
+ dev->set_light = set_light;
+
+ *device = (struct hw_device_t*)dev;
+ return 0;
+}
+
+static struct hw_module_methods_t lights_module_methods = {
+ .open = open_lights,
+};
+
+/*
+ * The lights Module
+ */
+struct hw_module_t HAL_MODULE_INFO_SYM = {
+ .tag = HARDWARE_MODULE_TAG,
+ .version_major = 1,
+ .version_minor = 0,
+ .id = LIGHTS_HARDWARE_MODULE_ID,
+ .name = "lights Module",
+ .author = "Google, Inc.",
+ .methods = &lights_module_methods,
+};
diff --git a/liblight/lights_prv.cpp b/liblight/lights_prv.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..f916ed2f48302f8749bce09f64cf850c00414d90
--- /dev/null
+++ b/liblight/lights_prv.cpp
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ * * Neither the name of The Linux Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+
+#include <hardware/hwcomposer_defs.h>
+#include "disp_color_apis.h"
+#include "lights_prv.h"
+
+/******************************************************************************/
+static DISPAPI_HANDLE g_ctx;
+
+/**
+ * device methods
+ */
+
+void set_brightness_ext_init(void)
+{
+ disp_api_init((DISPAPI_HANDLE*) &g_ctx, 0);
+}
+
+int set_brightness_ext_level(int level)
+{
+ int err = disp_api_set_panel_brightness_level_ext(g_ctx, HWC_DISPLAY_PRIMARY,
+ level, 0);
+
+ return err;
+}
diff --git a/liblight/lights_prv.h b/liblight/lights_prv.h
new file mode 100644
index 0000000000000000000000000000000000000000..e0ec73625d16ff43ffa199f80808475654181990
--- /dev/null
+++ b/liblight/lights_prv.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2017, The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and/or other materials provided
+ * with the distribution.
+ * * Neither the name of The Linux Foundation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef LIGHTS_PRV_H
+#define LIGHTS_PRV_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern void set_brightness_ext_init(void);
+extern int set_brightness_ext_level(int level);
+
+#ifdef __cplusplus
+}
+#endif
+#endif